Method for acquiring channel state information, terminal and network side device

Abstract

The present application discloses a method for acquiring channel state information, a terminal, and a network side device, which belong to the technical field of communications. The method for acquiring channel state information in an embodiment of the present application includes the steps of: a terminal acquiring, by a network side device, a first parameter set for each of K channel state information reference signals (CSI-RSs) among CSI-RSs, where K is an integer greater than 1; when the first parameters among the K CSI-RSs are not completely identical, the terminal determining a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling; and the terminal acquiring channel state information based on a power parameter associated with the first reference CSI-RS, where the power parameter is for acquiring power information required for calculating the channel state information.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority to a Chinese patent application bearing application number 202310141957.7 and entitled "Method for Acquiring Channel State Information, Terminal and Network Side Equipment," filed with the State Intellectual Property Office of the People's Republic of China on February 17, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of communications, and in particular to a method for obtaining channel state information, a terminal, and a network side device. [Background technology]

[0003] A terminal needs to feed back channel state information (CSI) to a network side device while communicating with the network side device. In the related art, the network side device may configure multiple channel state information reference signals (CSI-RS) for the terminal, and the terminal acquires CSI information for multiple time domain units by measuring each CSI-RS. However, in the related art, when a terminal acquires CSI information using multiple CSI-RS, multiple domains, multiple parameters, or multiple upper layer signaling are associated with the multiple CSI-RS, and therefore, only some parameters may be the same. In such a case, no effective solution has been provided so far for how the terminal acquires CSI information. Summary of the Invention

[0004] The embodiments of the present application provide a method for acquiring channel state information, a terminal, and a network side device, which can solve the problem of how to acquire CSI information when multiple domains, multiple parameters, or multiple upper layer signaling are associated with multiple CSI-RSs and only some of the parameters are the same.

[0005] In a first aspect, there is provided a method for acquiring channel state information executed by a terminal, the method including: a step in which the terminal acquires a first parameter set for each of K channel state information reference signals (CSI-RSs) by a network side device, where K is an integer greater than 1; a step in which, if the first parameters among the K CSI-RSs are not completely the same, the terminal determines a first reference CSI-RS from the K CSI-RSs in accordance with a preset rule or an instruction from network upper layer signaling; and a step in which the terminal acquires channel state information based on a power parameter associated with the first reference CSI-RS, where the power parameter is for acquiring power information required for calculating channel state information.

[0006] In a second aspect, there is provided a method for determining a CSI-RS transmission order executed by a terminal, the method including: a step in which the terminal acquires configuration parameters for K CSI-RSs configured by a network side device, where K is an integer greater than 1; and a step in which the terminal determines a transmission order for the K CSI-RSs based on first information, where the first information includes at least one of configuration information of the network side device and a default rule.

[0007] In a third aspect, there is provided a CSI-RS configuration method executed by a network side device, the CSI-RS configuration method including the step of configuring a first parameter of each CSI-RS among K channel state information reference signals (CSI-RSs) for a terminal, where K is an integer greater than 1 and if the first parameters among the K CSI-RSs are not exactly the same, determining a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling, and then instructing the terminal to obtain channel state information based on a power parameter associated with the first reference CSI-RS, the power parameter being for obtaining power information required for calculation of channel state information.

[0008] In a fourth aspect, there is provided a method for instructing a CSI-RS transmission order executed by a network side device, the method including: a step of configuring K channel state information reference signals (CSI-RS) for a terminal by the network side device, where K is an integer greater than 1; and a step of configuring configuration information for determining the transmission order of the K CSI-RS for the terminal by the network side device.

[0009] In a fifth aspect, there is provided an apparatus for acquiring channel state information, the apparatus comprising: a first acquisition module that acquires first parameters of K channel state information reference signals (CSI-RSs) set by a network side device, where K is an integer greater than 1; a first determination module that determines a first reference CSI-RS from the K CSI-RSs in accordance with a preset rule or an instruction from network upper layer signaling when first parameters between the K CSI-RSs are not exactly the same; and a second acquisition module that acquires channel state information based on a power parameter associated with the first reference CSI-RS, where the power parameter is for acquiring power information required for calculating channel state information.

[0010] In a sixth aspect, there is provided an apparatus for determining a CSI-RS transmission order, the apparatus comprising: a third acquisition module that acquires configuration parameters of K CSI-RSs configured by a network side device, where K is an integer greater than 1; and a second determination module that determines a transmission order of the K CSI-RSs based on first information, where the first information includes at least one of configuration information of the network side device and a default rule.

[0011] In a seventh aspect, there is provided a CSI-RS configuration device comprising: a fourth acquisition module that acquires a first parameter of each CSI-RS among K CSI-RSs, where K is an integer greater than 1; and a first setting module that sets the first parameter of each CSI-RS among the K CSI-RS to a terminal, where, when first parameters among the K CSI-RSs are not exactly the same, the first setting module determines a first reference CSI-RS from the K CSI-RS according to a preset rule or an instruction from network upper layer signaling, and then instructs the terminal to acquire channel state information based on a power parameter associated with the first reference CSI-RS, where the power parameter is for acquiring power information necessary for calculating the channel state information.

[0012] In an eighth aspect, there is provided a CSI-RS transmission order indication device, comprising: a second setting module that sets K channel state information reference signals (CSI-RS) for a terminal, where K is an integer greater than 1; and a third setting module that sets, for the terminal, setting information for determining the transmission order of the K CSI-RS.

[0013] In a ninth aspect, there is provided a terminal comprising a processor and a memory for storing a program or command executable by the processor, wherein when the program or command is executed by the processor, the steps of the method according to the first aspect are realized or the steps of the method according to the second aspect are realized.

[0014] In a tenth aspect, there is provided a network side device comprising a processor and a memory for storing a program or command executable by the processor, wherein when the program or command is executed by the processor, the steps of the method described in the third aspect are realized or the steps of the method described in the fourth aspect are realized.

[0015] In an eleventh aspect, there is provided a channel state information acquisition system comprising a terminal and a network side device, wherein the terminal is for implementing the steps of the method described in the first aspect and the network side device is for implementing the steps of the method described in the third aspect, or the terminal is for implementing the steps of the method described in the second aspect and the network side device is for implementing the steps of the method described in the fourth aspect.

[0016] In a twelfth aspect, there is provided a readable storage medium having a program or command stored thereon, the program or command causing, when executed by a processor, the steps of the method according to the first aspect to be realized, or the steps of the method according to the second aspect to be realized, or the steps of the method according to the third aspect to be realized, or the steps of the method according to the fourth aspect to be realized.

[0017] In a thirteenth aspect, there is provided a chip comprising a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor executes a program or command to implement the method described in the first aspect, or the method described in the second aspect, or the method described in the third aspect, or the steps of the method described in the fourth aspect.

[0018] In a fourteenth aspect, there is provided a computer program / program product which, when stored on a storage medium and executed by at least one processor, causes the steps of the method according to the first aspect to be realized, or the method according to the second aspect to be realized, or the steps of the method according to the third aspect to be realized, or the steps of the method according to the fourth aspect to be realized.

[0019] In an embodiment of the present application, a terminal obtains first parameters set for each CSI-RS among the K CSI-RSs by a network side device, and if the first parameters of the K CSI-RSs are not completely identical, determines a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling, and then obtains channel state information based on the determined first reference CSI-RS, thereby enabling the terminal to obtain CSI information using the first reference CSI-RS when multiple domains, multiple parameters, or multiple upper layer signaling are associated with multiple CSI-RSs and only some parameters are identical. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a schematic diagram of a wireless communication system to which an embodiment of the present application is applied; [Figure 2] 1 is a schematic flowchart of a method for obtaining channel state information provided in an embodiment of the present application; [Figure 3] 1 is a schematic flowchart of a method for determining a CSI-RS transmission order provided in an embodiment of the present application; [Figure 4] 1 is a schematic flowchart of a method for obtaining channel state information provided in an embodiment of the present application; [Figure 5] 1 is a schematic flowchart of a CSI-RS configuration method provided in an embodiment of the present application; [Figure 6] 1 is a schematic flowchart of a method for indicating a CSI-RS transmission order provided in an embodiment of the present application; [Figure 7]FIG. 1 is a schematic diagram of the configuration of a channel state information acquisition device provided in an embodiment of the present application; [Figure 8] FIG. 1 is a schematic diagram of the configuration of a device for determining the CSI-RS transmission order provided in an embodiment of the present application. [Figure 9] FIG. 1 is a schematic diagram of the configuration of a CSI-RS setting device provided in an embodiment of the present application. [Figure 10] FIG. 1 is a schematic diagram of the configuration of a CSI-RS transmission order indication device provided in an embodiment of the present application; [Figure 11] 1 is a schematic diagram of the configuration of a communication device provided in an embodiment of the present application; [Figure 12] FIG. 2 is a schematic diagram of the hardware configuration of a terminal provided in an embodiment of the present application. [Figure 13] FIG. 2 is a schematic diagram of the hardware configuration of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, the technical solutions in the embodiments of the present application will be clearly explained with reference to the drawings in the embodiments of the present application, and it should be understood that the described embodiments are only a part of the embodiments of the present application, not all of the embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments in the present application fall within the scope of protection of the present application.

[0022] Terms such as "first," "second," and the like used in this application are not intended to describe a particular order or chronology, but rather to distinguish between similar objects. It should be understood that terms used in this manner may be interchanged where appropriate so that the embodiments of this application can be implemented in an order other than that illustrated or described herein. It should also be understood that the objects distinguished by "first" and "second" generally belong to a single category and do not limit the number of objects; for example, the first object may be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, "A or B" includes three situations: including A but not B, including B but not A, and including both A and B. The symbol " / " generally indicates that the related objects are in an "or" relationship.

[0023] The term "instructions" in this application may refer to direct instructions (i.e., explicit instructions) or indirect instructions (i.e., implicit instructions). Here, direct instructions can be understood as instructions sent by a sender that clearly inform a receiver of specific information, an operation to be performed, a requested result, etc. An indirect instruction can be understood as instructions sent by a sender that determine corresponding information or make a judgment based on the judgment result and then determine an operation to be performed or a requested result, etc.

[0024] It should be noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-Carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used in other systems and wireless technologies in addition to those mentioned above. Although the following description describes New Radio (NR) systems for illustrative purposes and uses NR terminology in much of the following description, these techniques may also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems.

[0025] 1 shows a block diagram of a wireless communication system to which an embodiment of the present application can be applied. The wireless communication system includes a terminal 11 and a network side device 12. Here, the terminal 11 may be a terminal side device such as a mobile phone, a tablet personal computer (Tablet Personal Computer), a laptop computer, a personal digital assistant (PDA), a personal digital assistant (PDA), a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (Mobile Internet Device (MID)), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipboard device, a pedestrian user equipment (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture), a game console, a personal computer (Personal Computer (PC)), an automated teller machine (ATM), or a kiosk. Wearable devices include smart watches, smart wristbands, smart earphones, smart glasses, smart accessories (smart bracelets, smart rings, smart necklaces, smart anklets, smart wristlets, smart wear, etc.), smart wristlets, smart clothing, etc. Here, the in-vehicle equipment may also be referred to as an in-vehicle terminal, an in-vehicle controller, an in-vehicle module, an in-vehicle part, an in-vehicle chip, an in-vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network side equipment 12 may include access network equipment or core network equipment, where the access network equipment may also be referred to as a Radio Access Network (RAN) equipment, a radio access network function, or a radio access network unit.The access network equipment may include a base station, a Wireless Local Area Network (WLAN) Access Point (AP), or a Wireless Fidelity (WiFi) node. Here, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), the next generation Node B (gNB), a new radio node B (NR Node B), an access point, a relay station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home Node B (HNB), a home evolved Node B, a transmission reception point (TRP), or any other appropriate term in the art. As long as the same technical effect can be achieved, the base station is not limited to a specific technical term. It should be noted that although the embodiments of this application only use base stations in an NR system as examples, the specific type of the base station is not limited.

[0026] In a related protocol, the 3rd Generation Partnership Project (3GPP) Release 18 (Rel-18) allows a terminal to obtain Precoding Matrix Indicator (PMI) information and Channel Quality Indicator (CQI) information for multiple time-domain units through K CSI-RSs, where the CQI information may be associated with one time-domain unit or multiple time-domain units.

[0027] The non-zero power channel state information reference signal (Non-Zero Power CSI-RS, NZP CSI-RS) is indicated by the higher layer parameters CSI-ResourceConfig and NZP-CSI-RS-ResourceSet, and one or more NZP CSI-RS resource set configurations can be configured for a UE, where each NZP CSI-RS resource set consists of K (≧1) NZP CSI-RS resource(s).

[0028] Except for the NZP CSI-RS resource used for interference measurement, all CSI-RS resources in the same resource set are configured with the same density and number of ports. The UE is expected to configure all CSI-RS resources in a resource set with the same starting resource block (RB), number of RBs, and code division multiplexing (CDM) type (spreading mode of the CSI-RS reference signal).

[0029] Next, the periodicity and slot offset of different types of CSI-RS signals will be explained.

[0030] The periodicity and slot offset of periodic and semi-persistent CSI-RS are configured by Radio Resource Control (RRC) signaling. CSI-RSs located on the same resource set may have the same periodicity but different slot offsets.

[0031] Aperiodic CSI-RS can be triggered by Downlink Control Information (DCI), and slot offset candidate values ​​for CSI-RS are set independently for each resource set in the measurement resource setting by RRC signaling.

[0032] The domains included in the upper layer signaling NZP-CSI-RS-Resource are nzp-CSI-RS-ResourceId, resourceMapping, powerControlOffset, powerControlOffsetSS, scramblingID, periodicityAndOffset, and qcl-InfoPeriodicCSI-RS. The domains included in the upper layer signaling CSI-RS-ResourceMapping are frequencyDomainAllocation, nrofPorts, firstOFDMSymbolInTimeDomain, firstOFDMSymbolInTimeDomain2, cdm-Type, density, and freqBand. The domains included in the upper layer signaling NZP-CSI-RS-ResourceSet are nzp-CSI-ResourceSetId, nzp-CSI-RS-Resources, repetition, aperiodicTriggeringOffset, and trs-Info.

[0033] While acquiring CSI information using multiple CSI-RSs is a common technical solution, current solutions do not take into account cases where only some parameters are the same for multiple domains, multiple parameters, or multiple upper layer signaling associated with K CSI-RSs, or where CSI information can be acquired using only some parameters of one CSI-RS, resulting in a problem that accurate CSI information may not be acquired. Furthermore, in related technologies, the transmission order of the K CSI-RSs is not set, so the terminal and the network cannot consistently understand the transmission order, which may result in the terminal not receiving the CSI-RSs accurately and thus failing to acquire accurate CSI information. To address the above problem, embodiments of the present application provide a method for acquiring channel state information and a method for determining a CSI-RS transmission order.

[0034] Next, the technical means provided in the embodiments of the present application will be described in detail through several embodiments and their application scenarios with reference to the drawings.

[0035] 2 is a flowchart of a channel state information acquisition method 200 provided in an embodiment of the present application, which can be performed by a terminal, that is, the method can be performed by software or hardware installed in the terminal. As shown in FIG. 2, the method 200 includes the following steps S210, S220, and S230.

[0036] At S210, the terminal acquires a first parameter set for each CSI-RS among the K CSI-RSs by the network side device.

[0037] In the embodiment of the present application, K is an integer greater than 1. That is, the network side device configures at least two CSI-RSs and the first parameter of each CSI-RS.

[0038] At S210, the terminal may receive first parameters of each CSI-RS among the K CSI-RS configured by the network side device, where the K CSI-RS are CSI-RS for the terminal to acquire CSI. For example, the network side device may configure the first parameters of the K CSI-RS through higher layer signaling.

[0039] In one implementation, the first parameter may specifically include at least one of the following (1) to (4).

[0040] (1) A first identifier, i.e., a CSI-RS-ID, which indicates the identifier of the CSI-RS, for example, nzp-CSI-RS-ResourceId.

[0041] It can be understood that when a network side device configures multiple CSI-RS resources, each CSI-RS is configured with identifier information to enable a terminal to distinguish between them, and the identifier information includes a first identifier. Specifically, the first identifier of the CSI-RS may be a port set number or a CSI-RS port number.

[0042] (2) Pattern setting, which indicates at least one of the symbol position occupied by the CSI-RS in one slot, the subcarrier position occupied by the CSI-RS in one (Physical Resource Block, PRB), and the frequency domain position of the CSI-RS in a carrier or bandwidth part (BWP). For example, resource mapping is used. the symbol position occupied by the CSI-RS in one slot; the subcarrier position occupied by the CSI-RS in one physical resource block (PRB); and a frequency domain (or resource block (RB)) location in a carrier or bandwidth part (BWP) of the CSI-RS.

[0043] (3) Power parameter, for indicating power information associated with the CSI-RS, where the power information may specifically include power allocation information of the CSI-RS.

[0044] For example, the power parameters may include a first power control offset (powerControlOffset) and a second power control offset (powerControlOffsetSS), where the first power control offset may be a power offset of the average transmit power of a physical downlink shared channel resource element (PDSCH RE) and the average transmit power of a non-zero power CSI-RS resource element (NZP CSI-RS RE), and the second power control offset may be a power offset of the average transmit power of an NZP CSI-RS RE and a synchronization signal and PBCH block resource element (SS / PBCH block RE).

[0045] (4) A second identifier, which is used to indicate a scrambling identifier, i.e., a scrambling code ID (scrambling ID), associated with the CSI-RS.

[0046] It can be understood that when the network side device configures multiple CSI-RS resources, each CSI-RS includes at least one associated scrambling identifier, i.e., scrambling code identification code ID, for generating an initial sequence of a pseudo-random sequence corresponding to a reference signal, and the scrambling code ID may be explicitly specified by a protocol or may be obtained in a manner agreed upon between the network device and the terminal.

[0047] At S220, if the first parameters among the K CSI-RSs are not completely identical, the terminal determines a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling.

[0048] After obtaining first parameters of K channel state information reference signals (CSI-RSs) set by a network side device, the terminal may determine first parameters among the K CSI-RSs. If it determines that the first parameters among the K CSI-RSs are not completely identical, the terminal may determine a first reference CSI-RS from the K CSI-RSs according to a preset rule and an instruction from network upper layer signaling, where the first reference CSI-RS is used to determine CSI information. It should be noted that in this application, "not completely identical" includes "some are the same but other are different" or "completely different." For example, "the first parameters of three CSI-RSs are not completely identical" may mean that the first parameters of two of the CSI-RSs are the same but the first parameters are different from the first parameter of the third CSI-RS, or may mean that the first parameters of these three CSI-RSs are different from each other.

[0049] In one embodiment, the preset rules may include at least one of the following (1) to (4):

[0050] (1) Among the K CSI-RSs, the CSI-RS with the largest CSI-RS identifier is designated as the first reference CSI-RS.

[0051] For example, the CSI-RS identifier may be a CSI-RS ID, and if the first parameters among the K CSI-RSs are not completely identical, the terminal determines the CSI-RS with the largest CSI-RS ID among the K CSI-RSs as the first reference CSI-RS.

[0052] For example, if a network side device configures three CSI-RSs in the NZP-CSI-RS-ResourceSet, and the CSI-RS IDs are 4, 2, and 5, respectively, the terminal determines the CSI-RS with CSI-RS ID 5 in the CSI-RS set as the first reference CSI-RS according to the above rule.

[0053] (2) Among the K CSI-RSs, the CSI-RS with the smallest CSI-RS identifier is set as the first reference CSI-RS.

[0054] For example, if a network side device configures three CSI-RSs in the NZP-CSI-RS-ResourceSet and the CSI-RS IDs are 4, 2, and 5, respectively, the terminal determines the CSI-RS with CSI-RS ID 2 in the CSI-RS set as the first reference CSI-RS according to the above rule.

[0055] (3) The CSI-RS configured first in the first configuration signaling for configuring the K CSI-RSs is designated as the first reference CSI-RS.

[0056] For example, the first configuration signaling may be higher layer signaling NZP-CSI-RS-ResourceSet, and since multiple CSI-RS resources can be configured in one NZP-CSI-RS-ResourceSet during the CSI-RS resource configuration process, the first configured CSI-RS can be selected as the first reference CSI-RS.

[0057] For example, in the first configuration signaling, three CSI-RSs, namely, CSI-RS 0, CSI-RS 1, and CSI-RS 2, are configured sequentially, and CSI-RS 0 is configured with powerControlOffset=-8 / powerControlOffsetSS=db0, CSI-RS 1 is configured with powerControlOffset=-5 / powerControlOffsetSS=db3, and CSI-RS 2 is configured with powerControlOffset=0 / powerControlOffsetSS=db3. In this case, the terminal determines, according to the default rule, that CSI-RS 0 that is configured first in the CSI-RS set is the first reference CSI-RS, and refers to powerControlOffset=-8 / powerControlOffsetSS=db0 that is configured in CSI-RS 0 to acquire a channel, predict a channel, or acquire CSI information such as CQI.

[0058] (4) The CSI-RS configured last in the first configuration signaling for configuring the K CSI-RSs is set as the first reference CSI-RS.

[0059] For example, in the first configuration signaling, three CSI-RSs, namely, CSI-RS 0, CSI-RS 1, and CSI-RS 2, are configured sequentially, and CSI-RS 0 is configured with powerControlOffset=-8 / powerControlOffsetSS=db0, CSI-RS 1 is configured with powerControlOffset=-5 / powerControlOffsetSS=db3, and CSI-RS 2 is configured with powerControlOffset=0 / powerControlOffsetSS=db3. In this case, the terminal determines that CSI-RS 2, which was configured last in the CSI-RS set, is the first reference CSI-RS according to the default rule, and can acquire or predict the channel or acquire CSI information such as CQI by referring to powerControlOffset=0 / powerControlOffsetSS=db3 configured in CSI-RS 2.

[0060] At S230, the terminal obtains channel state information based on a power parameter associated with the first reference CSI-RS, where the power parameter is for obtaining power information required for calculating the channel state information.

[0061] In the embodiment of the present application, a power parameter is configured for the first reference CSI-RS, so that the terminal can obtain channel state information based on the power parameter associated with the first reference CSI-RS.

[0062] In the embodiment of the present application, the power parameter may be a power control parameter, which allows a terminal to obtain power information required for CSI calculation, including but not limited to a power control offset, such as powerControlOffset and / or powerControlOffsetSS.

[0063] For example, a network side device can configure three CSI-RSs, such as CSI-RS 0, CSI-RS 1, and CSI-RS 2, using higher layer signaling NZP-CSI-RS-ResourceSet, and set CSI-RS 0 to powerControlOffset=-8 / powerControlOffsetSS=db0, CSI-RS 1 to powerControlOffset=-5 / powerControlOffsetSS=db3, and CSI-RS 2 to powerControlOffset=0 / powerControlOffsetSS=db3. When the terminal determines CSI-RS 2 in the CSI-RS set to be the first reference CSI-RS according to the default rule, it can refer to the powerControlOffset=0 / powerControlOffsetSS=db3 configured for CSI-RS 2 to acquire or predict the channel or acquire CSI information such as CQI.

[0064] In one implementation, if the first parameters among the K CSI-RSs are completely the same, the terminal can acquire channel state information based on a power parameter associated with any one of the K CSI-RSs.

[0065] It can be understood that the first parameter may include a power parameter, and when the first parameters among the K CSI-RSs are completely the same, the power parameters included in the first parameters among the K CSI-RSs are also the same, so that the terminal can obtain channel state information based on the power parameter associated with any one of the K CSI-RSs.

[0066] For example, the first parameter includes a first power control offset powerControlOffset and / or a second power control offset powerControlOffsetSS, i.e., the first power control offset powerControlOffset and the second power control offset powerControlOffsetSS set for the K CSI-RSs are the same.

[0067] In one implementation, the terminal can acquire channel state information based on a power parameter associated with any one of the K CSI-RSs, assuming that the first parameters between the K CSI-RSs are exactly the same.

[0068] It can be understood that the first parameter may include a power parameter, and when the terminal assumes that the first parameters among the K CSI-RSs are completely identical, the power parameters included in the first parameters among the K CSI-RSs are also the same, so the terminal can acquire channel state information based on the power parameter associated with any one of the K CSI-RSs. In this case, the terminal does not want the first parameters among the K CSI-RSs configured by the network to be completely identical. Alternatively, if the first parameters among the K CSI-RSs configured by the network are not completely identical, the terminal does not acquire, update, or feed back CSI. Alternatively, if the first parameters among the K CSI-RSs configured by the network are not completely identical, the terminal acquires channel state information using the CSI-RSs that are completely identical according to a default rule.

[0069] According to the above technical solutions provided in the embodiments of the present application, the terminal obtains first parameters set for each of the K CSI-RSs by a network side device, and if the first parameters of the K CSI-RSs are not completely identical, determines a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling, and then obtains channel state information based on the determined first reference CSI-RS. Thus, when multiple domains, multiple parameters, or multiple upper layer signaling are associated with multiple CSI-RSs and only some parameters are identical, the terminal can obtain CSI information using the first reference CSI-RS and ensure the accuracy of the obtained CSI information.

[0070] For example, if a network side device configures K different CSI-RSs to acquire CSI information, the terminal assumes that the K CSI-RSs have the same power offset parameter (powerControlOffset and / or powerControlOffsetSS), and therefore acquires CSI information using the power offset parameter of one of the CSI-RSs.

[0071] Alternatively, when the network configures K different CSI-RSs to acquire CSI information, the terminal assumes that the K CSI-RSs may have different power offset parameters (powerControlOffset and / or powerControlOffsetSS). In this case, the terminal needs to determine one reference CSI-RS and acquire CSI information by referring to the associated (powerControlOffset and / or powerControlOffsetSS). The method of determining the reference CSI-RS may be one of the following methods (1) to (5). (1) Among the K CSI-RSs, the one with the largest or smallest CSI-RS ID is designated as the reference CSI-RS. (2) The first or last configured CSI-RS in the higher layer signaling NZP-CSI-RS-ResourceSet is used as the reference CSI-RS. (3) Which CSI-RS among the K CSI-RSs is to be used as the reference CSI-RS is indicated by higher layer signaling. (4) Of the K CSI-RSs, the first transmitted CSI-RS is designated as the reference CSI-RS. (5) Of the K CSI-RSs, the last transmitted CSI-RS is designated as the reference CSI-RS.

[0072] In the related art, the transmission order of the K CSI-RSs is not set, so the terminal and the network cannot agree on the transmission order of each CSI-RS. Therefore, the embodiment of the present application further provides a method for determining the CSI-RS transmission order.

[0073] 3 shows a flowchart of a method for determining a CSI-RS transmission order provided in an embodiment of the present application, where the method 300 can be performed by a terminal, that is, the method can be performed by software or hardware implemented in the terminal. As shown in FIG. 3, the method mainly includes the following steps S310 and S320.

[0074] At S310, the terminal obtains the configuration parameters of K CSI-RSs configured by the network side device, where K is an integer greater than 1.

[0075] In the embodiment of the present application, the network side device configures a plurality of CSI-RSs for the terminal to acquire CSI information.

[0076] Optionally, in the embodiments of the present application, the configuration parameters may include the first parameters in the above method 200, but of course, are not limited thereto. In actual application, the configuration parameters may also include parameters configured for multiple CSI-RSs by the network side device, and are not specifically limited in the embodiments of the present application.

[0077] At S320, the terminal determines a transmission order of the K CSI-RSs according to first information, where the first information includes at least one of configuration information of a network side device and a default rule.

[0078] Optionally, after determining the transmission order of the K CSI-RSs, the terminal may receive and measure each CSI-RS according to the transmission order, and then obtain CSI information according to the measurement results and a power parameter associated with the first reference CSI-RS.

[0079] In an embodiment of the present application, in order to enable the terminal to understand the transmission order of the K CSI-RS in a consistent manner with the network side device, the terminal can determine the transmission order of the K CSI-RS according to the configuration information and / or default rules of the network side device, thereby ensuring that the terminal and the network side device understand the transmission order of the K CSI-RS in a consistent manner, and therefore can accurately receive the CSI-RS and obtain more accurate CSI information.

[0080] In one implementation, the network side device may set or associate the number of time domain units that are the interval between each CSI-RS, and in this implementation, the step of the terminal determining the transmission order of the K CSI-RS may include the following steps 1 and 2.

[0081] In step 1, the terminal obtains a second parameter m that is set or associated by the network side device through first upper layer signaling.

[0082] Here, the second parameter m is for determining the interval between the transmission time domain positions associated with two adjacent CSI-RSs, i.e., the interval is m first time domain units, or the second parameter m is for determining the interval between the transmission time domain positions associated with the hth transmitted CSI-RS and the first transmitted CSI-RS, i.e., the interval is h*m first time domain units.

[0083] For example, when the network side device configures K CSI-RSs to have the same CSI-RS ID (i.e., the first parameter includes the CSI-RS ID), the network side device may configure the second parameter m through higher layer signaling, so that the terminal assumes that the interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units. Here, the second parameter m may be configured as NZP-CSI-RS-ResourceSet through higher layer signaling. The first time domain unit may be a slot, a symbol, or another predefined time domain length. For example, the network configures K identical CSI-RSs to obtain CSI information and simultaneously indicates a second parameter m via higher layer signaling NZP-CSI-RS-ResourceSet, where m represents the time domain interval between two adjacent CSI-RSs transmitted by the network (the difference between the slot indexes of two adjacently transmitted CSI-RSs is m slots). The terminal determines the slot n of the first transmitted CSI-RS according to the slot offset indicated by the higher layer signaling, so that the slot of the second transmitted CSI-RS is n+m, the third is n+2*m, and so on. Since the K CSI-RSs are the same, all transmitted CSI-RSs have the same domain information in the NZP-CSI-RS-Resource.

[0084] Furthermore, for example, when the network side device configures the K CSI-RSs to have different first parameters (e.g., different CSI-RS IDs), the network side device may configure the second parameter m through higher layer signaling, where the second parameter m may be configured as NZP-CSI-RS-ResourceSet through higher layer signaling.

[0085] In step 2, the terminal obtains a transmission order of the K CSI-RSs based on the second parameter m and a first default rule, and the interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units.

[0086] In the above implementation, when the terminal determines that the interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units, the network side device can indicate the transmission time domain position associated with the first transmitted CSI-RS by higher layer signaling, and the terminal obtains the transmission time domain position associated with the first transmitted CSI-RS indicated by the higher layer signaling, and obtains the transmission time domain position associated with each CSI-RS by the second parameter m and the transmission time domain position associated with the first transmitted CSI-RS, i.e., the time domain symbol position associated with the i-th transmitted CSI-RS among the K CSI-RSs is obtained by the time domain symbol position associated with the previously transmitted CSI-RS and m, i.e., the i-th time domain symbol position is the time domain symbol position associated with the previously transmitted CSI-RS+m.

[0087] In one implementation, the first default rule may specifically include at least one of the following (1) to (4):

[0088] (1) The K CSI-RSs are transmitted in descending order of the CSI-RS identifier (for example, CSI-RS ID) of each CSI-RS.

[0089] For example, assume that three CSI-RS are configured in the higher layer signaling NZP-CSI-RS-ResourceSet, the first configured CSI-RS is the CSI-RS with ID 4, the second configured CSI-RS is the CSI-RS with ID 2, and the third configured CSI-RS is the CSI-RS with ID 5, and therefore the transmission order of the three CSI-RS is, in order, the CSI-RS with ID 5, the CSI-RS with ID 4, and the CSI-RS with ID 2. Here, assuming that the transmission slot of the CSI-RS with ID 5 is slot n, the transmission slot of the CSI-RS with ID 4 is slot n+m, and the transmission slot of the CSI-RS with ID 2 is slot n+2m.

[0090] (2) The K CSI-RSs are transmitted in ascending order of CSI-RS identifiers.

[0091] For example, assume that three CSI-RS are configured in the higher layer signaling NZP-CSI-RS-ResourceSet, the first configured CSI-RS is the CSI-RS with ID 4, the second configured CSI-RS is the CSI-RS with ID 2, and the third configured CSI-RS is the CSI-RS with ID 5, and therefore the transmission order of the three CSI-RS is, in order, the CSI-RS with ID 2, the CSI-RS with ID 4, and the CSI-RS with ID 5. Here, assuming that the transmission slot of the CSI-RS with ID 2 is slot n, the transmission slot of the CSI-RS with ID 4 is slot n+m, and the transmission slot of the CSI-RS with ID 5 is slot n+2m.

[0092] (3) The K CSI-RSs are transmitted in order of oldest configuration order of the CSI-RSs.

[0093] For example, the CSI-RS configuration order may be the order of the CSI-RS configured in the higher layer signaling NZP-CSI-RS-ResourceSet.

[0094] For example, assume that three CSI-RS are configured in the higher layer signaling NZP-CSI-RS-ResourceSet, the first configured CSI-RS is the CSI-RS with ID 4, the second configured CSI-RS is the CSI-RS with ID 2, and the third configured CSI-RS is the CSI-RS with ID 5, and therefore the transmission order of the three CSI-RS is, in order, the CSI-RS with ID 4, the CSI-RS with ID 2, and the CSI-RS with ID 5. Here, assuming that the transmission slot of the first configured CSI-RS is slot n, the transmission slot of the second configured CSI-RS is slot n+m, and the transmission slot of the third configured CSI-RS is slot n+2m.

[0095] (4) The K CSI-RSs are transmitted in order of most recent configuration order of the CSI-RSs.

[0096] For example, three CSI-RSs are configured in the non-zero power CSI-RS resource set NZP-CSI-RS-ResourceSet, the first configured CSI-RS is the CSI-RS with ID 4, the second configured CSI-RS is the CSI-RS with ID 2, and the third configured CSI-RS is the CSI-RS with ID 5; therefore, the transmission order of the three CSI-RSs is, in order, the CSI-RS with ID 5, the CSI-RS with ID 2, and the CSI-RS with ID 4.

[0097] For example, if the network configures K different CSI-RSs to acquire CSI information, the terminal needs to acquire the transmission order and transmission time domain positions of the K different CSI-RSs. The network instructs the terminal with a second parameter m through upper layer signaling NZP-CSI-RS-ResourceSet, and the terminal assumes that the time domain interval between two CSI-RSs transmitted by the network is m slots. Regarding the transmission order, the terminal can acquire the transmission order of the K CSI-RSs according to the default rule. a) transmitting the K CSI-RSs in ascending or descending order of CSI-RS IDs; b) The transmission order of the K CSI-RS includes transmitting the K CSI-RSs in ascending or descending order of the CSI-RS configuration order.

[0098] In another implementation, the intervals between each CSI-RS may not all be m time domain units but may vary to some extent, and the network side device may not only set or associate the second parameter m, but also set or associate a third parameter e for each CSI-RS, so that the step of the terminal determining the transmission order of the K CSI-RSs may include: a step 1 in which the terminal acquires a second parameter m configured for or associated with the K CSI-RSs and a third parameter e configured for or associated with each of the CSI-RSs, the second parameter m and the third parameter e being for indicating that an interval between a transmission time domain position associated with a CSI-RS and a target time domain position is m*e first time domain units, and the target time domain position includes one of a transmission time domain position associated with a first transmitted CSI-RS and a reference time domain position; a step 2 in which the terminal obtains a first time domain unit offset value corresponding to each of the CSI-RSs based on a second parameter m and a third parameter e associated with each of the CSI-RSs; 3, the terminal obtaining a transmission time domain position associated with each CSI-RS according to the first time domain unit offset value corresponding to each CSI-RS; 4, the terminal determining that the K CSI-RSs have been transmitted in ascending order of the first time domain unit offset value.

[0099] It can be understood that the UE can obtain the transmission order of the K CSI-RSs according to the second parameter m and the third parameter e set by the network side device. Specifically, the UE obtains a first time-domain unit offset value corresponding to each CSI-RS according to the second parameter m and the third parameter e associated with each CSI-RS, and determines the transmission order in ascending order of offset value, i.e., the K CSI-RSs are transmitted in ascending order of first time-domain unit offset value, where the first time-domain unit offset is a slot offset, a symbol offset, or another predefined time-domain length.

[0100] In the above possible implementation, the terminal may determine the transmission time domain position associated with the first transmitted CSI-RS through higher layer signaling, and further obtain the transmission time domain position associated with each CSI-RS through the second parameter m and the third parameter e. Optionally, in one approach, the terminal may obtain the starting transmission time domain position n associated with K CSI-RSs through higher layer signaling, and the transmission time domain position of each CSI-RS is n+m*e.

[0101] As an example, suppose three CSI-RSs, i.e., CSI-RS 0, CSI-RS 1, and CSI-RS 2, are configured in higher layer signaling NZP-CSI-RS-ResourceSet, and the second parameter m is set where m is 2, the third parameter e is set for CSI-RS 0 where e is 0, the third parameter e is set for CSI-RS 1 where e is 1, and the third parameter e is set for CSI-RS 2 where e is 2, and the transmission slot offset associated or configured by NZP-CSI-RS-ResourceSet is n, then the transmission slot for CSI-RS 0 is slot n+m*e=n, the transmission slot for CSI-RS 1 is slot n+m*e=n+2, and the transmission slot for CSI-RS 2 is slot n+m*e=n+4.

[0102] Illustratively, the second parameter m may be set to a higher layer signaling NZP-CSI-RS-ResourceSet, and the third parameter e may be set to a higher layer signaling NZP-CSI-RS-Resource.

[0103] For example, if the network configures K different CSI-RSs to acquire CSI information, the UE needs to acquire the transmission order and transmission time-domain positions of the K different CSI-RSs. Assume that the network indicates a second parameter m to the UE through higher layer signaling NZP-CSI-RS-ResourceSet and a third parameter e to the UE through higher layer signaling NZP-CSI-RS-Resource. The UE assumes that the time-domain interval between two CSI-RSs transmitted by the network is m slots. The UE acquires a slot offset n+e*m for each CSI-RS, where n is the initial slot offset associated with the K CSI-RSs indicated by the higher layer signaling (or may be the offset indicated by aperiodicTriggeringOffset). The UE assumes that the network sequentially transmits the CSI-RSs corresponding to the smallest slots of the CSI-RSs. In particular, when e=0, it means that the slot offset of the CSI-RS is n and that it is the first CSI-RS transmitted.

[0104] In one implementation, the network side device can also directly set the transmission time domain position of each CSI-RS relative to the first transmitted CSI-RS or the reference time domain position. In this implementation, the step of the terminal determining the transmission order of the K CSI-RSs can be performed as follows: Step 1, in which the terminal acquires a fourth parameter d set for each of the CSI-RSs by the network side device, the fourth parameter d being used by the terminal to acquire a transmission time domain position of the CSI-RS; Step 2, in which the terminal obtains a first time domain unit offset value corresponding to each of the CSI-RSs based on the fourth parameter d of each of the CSI-RSs; 3, the terminal obtaining a transmission time domain position associated with each CSI-RS according to the first time domain unit offset value corresponding to each CSI-RS; 4, the terminal determining that the K CSI-RSs have been transmitted in ascending order of the first time domain unit offset value.

[0105] In the above implementation, the terminal can obtain the transmission order of the K CSI-RSs according to the fourth parameter d set by the network side device. Specifically, the terminal obtains the first time-domain unit offset at which each CSI-RS is transmitted according to the fourth parameter d associated with each CSI-RS, and determines the transmission order in ascending order of offset value, i.e., the K CSI-RSs are transmitted in ascending order of first time-domain unit offset value.

[0106] In the above possible implementation, the terminal can determine the transmission time domain position associated with the first transmitted CSI-RS through higher layer signaling and further obtain the transmission time domain position associated with each CSI-RS through the fourth parameter d. Optionally, as one approach, the terminal can obtain the starting transmission time domain position n associated with K CSI-RSs through higher layer signaling (i.e., the transmission time domain position corresponding to the first CSI-RS is the nth time domain unit), and thus the transmission time domain position of each CSI-RS is n+d (i.e., the transmission time domain position of each CSI-RS is the (n+d)th time domain unit). Optionally, the higher layer signaling can be NZP-CSI-RS-Resource.

[0107] For example, suppose three CSI-RSs, namely, CSI-RS 0, CSI-RS 1, and CSI-RS 2, are configured in the higher layer signaling NZP-CSI-RS-ResourceSet, and the fourth parameter d is configured for CSI-RS 0, where d=0, the fourth parameter d is configured for CSI-RS 1, where d=2, and the fourth parameter d is configured for CSI-RS 2, where d=4. If the transmission slot offset associated or configured by the NZP-CSI-RS-ResourceSet is n, the transmission slot for CSI-RS 0 is slot n+d=n, the transmission slot for CSI-RS 1 is slot n+d=n+2, and the transmission slot for CSI-RS 2 is slot n+d=n+4.

[0108] For example, if the network configures K different CSI-RSs to acquire CSI information, the terminal needs to acquire the transmission order and transmission time-domain positions of the K different CSI-RSs. The network indicates the fourth parameter d to the terminal through higher layer signaling NZP-CSI-RS-Resource, and the terminal acquires the transmission order and time-domain positions of the K CSI-RSs using the fourth parameter d. The terminal acquires the slot offset n+d for each CSI-RS, where n is the initial slot offset associated with the K CSI-RSs indicated by the higher layer signaling (or may be the offset indicated by aperiodicTriggeringOffset). The terminal assumes that the network transmits corresponding CSI-RSs sequentially in ascending order of CSI-RS slots. As a special case, d=0 indicates that the slot offset of the CSI-RS is n, which means that the CSI-RS is transmitted first. As a special case, the value of d may be an integer multiple of the second parameter m, or the entire value of d is an arithmetic progression.

[0109] In one implementation, when the first time domain unit is a symbol, the terminal determines that a time domain symbol position is not configured in the pattern configuration associated with the K CSI-RSs, or determines that some or all of the time domain symbol positions configured in the pattern configuration associated with the K CSI-RSs are invalid. For example, when the terminal assumes that the interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units and the first time domain unit is a symbol, the terminal assumes that a time domain symbol position is not configured in the pattern (resource Mapping) of the K CSI-RSs, or ignores the time domain symbol position configured in the pattern (resource Mapping) of the K CSI-RSs. Alternatively, the terminal assumes that a time domain symbol position is not configured for some CSI-RSs in the pattern (resource Mapping) of the K CSI-RSs, or ignores the time domain symbol position configured for some CSI-RSs in the pattern (resource Mapping) of the K CSI-RSs.

[0110] In one implementation, when the terminal determines that a time domain location is associated with or configured for only one CSI-RS in the pattern configuration associated with the K CSI-RSs, the terminal assumes that the CSI-RS is the first transmitted CSI-RS or that the time domain location associated with the CSI-RS is a reference time domain location from which the time domain locations of the other CSI-RSs are obtained. The time domain location is not limited to a time domain symbol location, but may be a time domain slot location, etc.

[0111] For example, the network configures K identical CSI-RSs to acquire CSI information and indicates a second parameter m via higher layer signaling NZP-CSI-RS-ResourceSet, where m represents the time-domain interval of m symbols between two adjacent CSI-RSs transmitted by the network. The UE determines slot n of the first transmitted CSI-RS according to the slot offset indicated by the higher layer signaling. The UE also obtains symbol position k at which the CSI-RS is transmitted according to a pattern parameter associated with the CSI-RS. Thus, the time-domain position of the first transmitted CSI-RS is symbol k in slot n, the time-domain position of the second transmitted CSI-RS is symbol n*N+k+m, and the time-domain position of the third transmitted CSI-RS is symbol n*N+k+2*m, where N represents the number of symbols included in one slot. Since the K CSI-RSs are identical, all transmitted CSI-RSs have the same domain information in the NZP-CSI-RS-Resource.

[0112] In the above implementation, optionally, the time-domain symbol position associated with the first transmitted CSI-RS among the K CSI-RSs can be determined by a second default rule: The time-domain symbol position associated with the i-th (i>1)-th transmitted CSI-RS among the K CSI-RSs is obtained by multiplying the time-domain symbol position associated with the previously transmitted CSI-RS by m, e.g., the time-domain symbol position associated with the i-th transmitted CSI-RS = the time-domain symbol position associated with the previously transmitted CSI-RS + m.

[0113] Optionally, the second default rule may include at least one of the following (1) to (2): (1) The time-domain symbol position associated with the first transmitted CSI-RS is the first time-domain symbol of the associated slot, i.e., the terminal defaults to the time-domain symbol position associated with the first transmitted CSI-RS being the first time-domain symbol of the associated slot. (2) The time domain symbol position associated with the first transmitted CSI-RS is the time domain symbol position set in the pattern of the CSI-RS. That is, the terminal defaults to the time domain symbol position associated with the first transmitted CSI-RS being the time domain symbol position set in the pattern (resource mapping) of the CSI-RS.

[0114] The patterns associated with each CSI-RS among the K CSI-RSs configured by the network side device may not be exactly the same, or the symbol indexes associated with each CSI-RS may not be exactly the same. In one implementation, in such a case, the terminal determines that the symbol interval between the symbol index associated with any one of the CSI-RSs and a first reference symbol index does not exceed a first value. In this implementation, when some or all of the K CSI-RSs configured by the network side are associated with different patterns or different symbol indexes, the symbol interval between the symbol index associated with any one CSI-RS and a first reference symbol does not exceed the first value. Optionally, the symbol index may be the first symbol index associated with the CSI-RS.

[0115] For example, if the first reference symbol index is k and the first value is s, then the symbol index associated with any one CSI-RS can be any value within m[ks,k+s], where [ks,k+s] represents an interval, meaning that the symbol index is greater than or equal to ks and less than or equal to k+s.

[0116] Optionally, in the above implementation, the symbol index associated with any one of the CSI-RSs is 0 to N-1, inclusive, where N is the number of symbols in one slot, or the any one of the CSI-RSs is transmitted in one slot or not in excess of the transmission slot instructed by the network side device. In this possible implementation, if the symbol index associated with any one of the CSI-RSs is any value in [ks, k+s], the symbol index associated with the CSI-RS must further satisfy 0 to N-1, inclusive, where N represents the number of symbols in one slot, or the CSI-RS must be transmitted in excess of the slot or not in excess of the transmission slot instructed by the network.

[0117] In one implementation, the first value is determined by the terminal's feedback capability. That is, the symbol interval between a symbol index associated with any one of the CSI-RSs and a first reference symbol index does not exceed the corresponding interval fed back by the terminal, thereby ensuring that the terminal can measure each CSI-RS and provide feedback based on the measurement results. The terminal's feedback capability may be the symbol interval supported by the terminal or the maximum symbol interval supported by the terminal depending on the actual measurement hardware or software requirements. The terminal may feedback one symbol interval or multiple symbol intervals, and the network can select only the first value from among them. Different symbol intervals may be fed back under various CSI-RS parameter settings, and the network selects an appropriate first value according to the CSI-RS parameter settings. Alternatively, the terminal may feedback one or multiple maximum symbol intervals, and the network can select any value equal to or less than the maximum symbol interval as the first value.

[0118] In the above implementation, if the transmission symbols of the K CSI-RSs configured by the network side device do not satisfy the feedback capability of the terminal, the terminal does not feedback channel state information or update channel state information. If the transmission symbol indexes of the K CSI-RSs configured by the network do not satisfy the feedback capability of the terminal, the terminal may not feedback CSI or update CSI information, thereby avoiding inaccurate feedback or updated CSI information. Alternatively, the terminal may obtain corresponding CSI information only from one or more CSI-RSs that satisfy the capability as CSI information to be fed back.

[0119] In the above implementation, the terminal optionally determines the first reference symbol index according to a configuration of a network side device or a third default rule.

[0120] For example, the third default rule includes that the first reference symbol index is a symbol index associated with the first CSI-RS transmitted or configured by the network side device. For example, the first reference symbol index may be the first symbol index associated with the first CSI-RS transmitted or configured by the network side device.

[0121] For example, assume that three CSI-RSs are configured by the network, the interval between two adjacent CSI-RSs is two slots, each slot is 14 symbols, the offset fed back by the terminal is s=2, and the first reference symbol is slot n symbol x of the first CSI-RS transmitted by the network. Then, the time of the second CSI-RS transmitted by the network may be any one of symbols from slot n+2 symbol x-2 to slot n+2 symbol x+2, and the time of the third CSI-RS transmitted by the network may be any one of symbols from slot n+4 symbol x-2 to slot n+4 symbol x+2. Furthermore, assuming that there are 14 symbols in one slot and x=12, the time of the second CSI-RS may be any one of symbols from slot n+2 symbol x-2 to slot n+2 symbol 13, and the time of the third CSI-RS transmitted by the network may be any one of symbols from slot n+4 symbol x-2 to slot n+4 symbol 13.

[0122] In another implementation, in such a case, the terminal determines that the symbol interval between time-domain positions associated with two adjacently transmitted or configured CSI-RS is any value within [m*Ny,m*N+y], where m represents the number of slots between the time-domain positions associated with two adjacent CSI-RS, N is the number of symbols in one slot, and y is a second value. In this implementation, when some or all of the K CSI-RS configured by the network side are associated with different patterns or are associated with different symbol indices, the terminal determines that the symbol interval between two adjacently transmitted or configured CSI-RS is any value within [m*Ny,m*N+y]. It should be noted that [m*Ny, m*N+y] represents an interval, which indicates that the symbol interval is greater than or equal to m*Ny and less than or equal to m*N+y.

[0123] For example, assuming that two CSI-RSs are configured by the network, the interval between two adjacent CSI-RSs is 2 slots, each slot is 14 symbols, the offset fed back by the terminal is y=2, and the first CSI-RS transmitted by the network is slot n symbol x, the time of the second CSI-RS transmitted by the network may be any one of symbols from slot n+2 symbol x-2 to slot n+2 symbol x+2. Furthermore, assuming that there are 14 symbols in one slot and x=12, the time of the second CSI-RS may be any one of symbols from slot n+2 symbol x-2 to slot n+2 symbol 13.

[0124] Optionally, when the symbol interval between two adjacently transmitted or configured CSI-RS is any value within [m*Ny, m*N+y], the symbol index associated with any one of the CSI-RS is 0 to N-1, inclusive, where N is the number of symbols in one slot, or the any one of the CSI-RS is transmitted within one slot or is transmitted within no more than the transmission slots indicated by the network side device.

[0125] It can be understood that if the symbol index associated with any one CSI-RS is any value in [m*Ny, m*N+y], the symbol index associated with that CSI-RS must also be between 0 and N-1, inclusive, where N represents the number of symbols in a slot, or the CSI-RS must not be transmitted beyond the slot or beyond the transmission slot indicated by the network.

[0126] In one implementation, the second value is determined by the terminal's fed-back capability, i.e., the interval of the symbol spacing value between two adjacently transmitted or configured CSI-RS is determined by the terminal's fed-back symbol spacing parameter. The symbol spacing parameter may be a symbol spacing successor value, a symbol spacing maximum value, or another parameter for determining the interval of the symbol spacing value between two adjacently transmitted or configured CSI-RS.

[0127] In one implementation, if the transmission symbol interval between two adjacently transmitted or configured CSI-RSs among the K CSI-RSs configured by the network side device is not within [m*Ny, m*N+y], the terminal does not perform feedback of channel state information or update of channel state information. In this implementation, if the number of transmission symbols between two adjacent CSI-RSs among the K CSI-RSs configured by the network side device does not satisfy the interval [m*Ny, m*N+y], the terminal does not need to feedback CSI or update CSI information. In other words, if the transmission symbol interval between two adjacently transmitted or configured CSI-RSs among the K CSI-RSs exceeds the terminal's capability, the terminal does not perform CSI feedback or update, thereby avoiding feeding back or updating inaccurate CSI information.

[0128] In one implementation, to accurately receive each CSI-RS, the terminal may further determine a frequency domain resource location associated with each CSI-RS among the K CSI-RS. By determining the frequency domain resource location associated with each CSI-RS among the K CSI-RS, the terminal can detect each CSI-RS at the frequency domain resource location associated with each CSI-RS to obtain channel state information.

[0129] In one implementation, the spacing between the frequency domain resource location associated with any one of the CSI-RSs and the first reference frequency domain resource location does not exceed a third value.

[0130] Optionally, the frequency domain resource location may comprise a frequency domain resource index, wherein the frequency domain resource index is: Frequency domain resource block (RB) index within a certain bandwidth; subcarrier index within a certain bandwidth; Frequency domain resource element (RE) indices within a certain bandwidth; a subcarrier index within one frequency domain resource block; a frequency domain resource element (RE) index within one frequency domain resource block; a frequency domain resource block (RB) index within one frequency domain resource block group; a subcarrier index within one frequency domain resource block group; a frequency domain resource element (RE) index within one frequency domain resource block group;

[0131] In one implementation, the third value may be determined based on the capability fed back by the terminal, i.e., the capability fed back by the terminal to the network side device, and if the frequency domain resource locations associated with the K CSI-RSs configured by the network side device do not satisfy the capability fed back by the terminal, the terminal does not perform feedback of channel state information or does not perform updating of channel state information.

[0132] In one implementation, the terminal may determine the first reference frequency domain resource location according to a configuration of a network side device or a fourth default rule. For example, the terminal may default to determining that the first reference frequency domain resource index is a frequency domain resource index associated with a first CSI-RS transmitted or configured by the network side device. For example, the first reference frequency domain resource index may be a frequency domain resource index associated with a first CSI-RS configured by the network side device through higher layer signaling or MAC-CE.

[0133] It should be noted that, although the above-mentioned methods 200 and 300 respectively describe a method for obtaining channel state information and a method for determining a CSI-RS transmission order provided in the embodiments of the present application, these two methods may be combined with each other in actual application. For example, FIG. 4 shows a schematic flowchart of another method for obtaining channel state information provided in the embodiments of the present application. The method 400 can be performed by a terminal, that is, the method 400 can be performed by software or hardware implemented in the terminal. As shown in FIG. 4, the method mainly includes the following steps S410, S420, S430, and S440.

[0134] At S410, the terminal obtains a first parameter set for each CSI-RS among the K CSI-RSs by the network side device, where K is an integer greater than 1.

[0135] This step is the same as S210 in method 200, and reference can be made to the relevant description in method 200 for details, and detailed description thereof will be omitted here.

[0136] At S420, the terminal determines the transmission order of the K CSI-RSs.

[0137] This step may be the same as S320 in the method 300, and reference may be made to the relevant description in the method 300, and detailed description thereof will be omitted here.

[0138] At S430, if the first parameters among the K CSI-RSs are not completely identical, the terminal determines a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling.

[0139] This step is the same as S220 in method 200, and reference can be made to the relevant description in method 200 for details, and detailed description thereof will be omitted here.

[0140] In actual application, there is no strict order in which S420 and S430 are executed.

[0141] At S440, the terminal obtains channel state information based on a power parameter associated with the first reference CSI-RS, the power parameter being for obtaining power information required for calculating the channel state information.

[0142] This step is the same as S320 in method 200, and reference can be made to the relevant description in method 200 for details, and detailed description thereof will be omitted here.

[0143] Optionally, the terminal may measure each CSI-RS based on the transmission order of the K CSI-RSs, and obtain channel state information based on the measurement result and a power parameter associated with the first reference CSI-RS.

[0144] According to the above method provided in the embodiments of the present application, the terminal can determine the transmission order of the K CSI-RSs based on configuration information and / or a default rule of the network side device, thereby ensuring consistent understanding between the terminal and the network side device. Furthermore, when the first parameters of the K CSI-RSs are not completely identical, the terminal can determine a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling, and then obtain channel state information based on the determined first reference CSI-RS. Thus, when multiple domains, multiple parameters, or multiple upper layer signaling are associated with multiple CSI-RSs and only some parameters are identical, the terminal can obtain CSI information through the first reference CSI-RS. This allows the terminal to accurately receive the CSI-RSs and obtain more accurate CSI information.

[0145] 5 shows a CSI-RS configuration method further provided in an embodiment of the present application, corresponding to method 200. The method 500 can be performed by a network side device, that is, the method 500 can be performed by software or hardware implemented in the network side device. The method includes the following step S510.

[0146] At S510, the network side device configures a first parameter of each CSI-RS among K CSI-RSs for the terminal, where K is an integer greater than 1; If the first parameters among the K CSI-RSs are not completely identical, determine a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling, and then instruct the terminal to obtain channel state information based on a power parameter associated with the first reference CSI-RS, where the power parameter is for obtaining power information required for calculating the channel state information.

[0147] In an embodiment of the present application, the network side device sets first parameters of K channel state information reference signals (CSI-RS) for the terminal, thereby helping the terminal to accurately acquire CSI information when the first parameters of the acquired K CSI-RS are not completely identical.

[0148] According to the above embodiment, the first parameter is further a first identifier for indicating an identifier of the CSI-RS; a pattern configuration for indicating at least one of a symbol position occupied by the CSI-RS in one slot, a subcarrier position occupied by the CSI-RS in one physical resource block PRB, and a frequency domain position in a carrier or bandwidth portion BWP of the CSI-RS; a power parameter for indicating power information associated with the CSI-RS; and a second identifier for indicating a scrambling identifier associated with the CSI-RS.

[0149] It should be noted that the specific content of the first parameter can be referred to the relevant content of the method embodiment shown in FIG. 3, and detailed description thereof will be omitted here.

[0150] In one alternative implementation form, in order to enable the network side device and the terminal to have a consistent understanding of the transmission order of the K CSI-RS, the method may further include a step in which the network side device configures configuration information for the terminal to determine the transmission order of the K CSI-RS.

[0151] Furthermore, the network side device configuring the terminal with configuration information for determining the transmission order of the K CSI-RSs includes at least one of the following (1) to (3).

[0152] (1) The network side device configures or associates a second parameter m with the K CSI-RSs by first higher layer signaling, and the second parameter m indicates that the interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units.

[0153] It can be understood that the network side device sets the second parameter m to the terminal through first higher layer signaling, thereby instructing the terminal to determine, based on the second parameter m, that the time domain interval between two adjacent CSI-RSs sent by the network side device is m slots.

[0154] (2) The network side device, by second higher layer signaling, sets or associates a second parameter m for the K CSI-RSs and sets or associates a third parameter e for each of the CSI-RSs, where the third parameter e is for indicating that the interval between the transmission time domain position associated with the CSI-RS and the target time domain position is m*e first time domain units, and the target time domain position includes one of the transmission time domain position and the reference time domain position associated with the first transmitted CSI-RS.

[0155] It can be understood that the network side device sets a second parameter m and a third parameter e for the terminal through second higher layer signaling, thereby instructing the terminal that the time domain interval between two adjacent CSI-RSs transmitted by the network side device determined based on the second parameter m is m slots, and instructing the terminal that the slot offset of each CSI-RS obtained based on the third parameter e is n+e*m, where n is the initial slot offset associated with the K CSI-RSs indicated by the higher layer signaling (which may be the offset indicated by aperiodicTriggeringOffset).

[0156] For example, when a network side device sequentially transmits CSI-RS corresponding to the CSI-RS slots in ascending order, e=0 indicates that the slot offset of the CSI-RS is n and that it is the first CSI-RS transmitted.

[0157] (3) The network side device sets a fourth parameter d for each of the CSI-RSs by third higher layer signaling, and the fourth parameter d is used by the terminal to obtain the transmission time domain position of the CSI-RS.

[0158] It can be understood that the network side device configures a fourth parameter d for the UE through third higher layer signaling, thereby instructing the UE to obtain the transmission order and time domain positions of the K CSI-RSs according to the fourth parameter d. The slot offset of each CSI-RS obtained by the UE is n+d, where n is the initial slot offset associated with the K CSI-RSs indicated by the higher layer signaling (which may be the offset indicated by aperiodicTriggeringOffset).

[0159] For example, when a network side device sequentially transmits CSI-RSs corresponding to the CSI-RSs in ascending order of slots, if d=0, it means that the slot offset of the CSI-RS is n and that the CSI-RS is the first transmitted CSI-RS. It should be noted that the value of d may be an integer multiple of the second parameter m, or the entire value of d may be an arithmetic progression.

[0160] Corresponding to method 300, Fig. 6 shows a method for indicating a CSI-RS transmission order provided in an embodiment of the present application. Method 600 can be performed by a network side device, that is, can be performed by software or hardware implemented in the network side device. The method includes the following steps S610 and S620.

[0161] At S610, the network side device configures K CSI-RSs for the terminal, where K is an integer greater than 1. For example, the network side device configures the K CSI-RSs and configuration parameters of each CSI-RS for the terminal through upper layer signaling.

[0162] At S620, the network side device sets configuration information for determining the transmission order of the K CSI-RSs to the terminal.

[0163] In one implementation, the step of the network side device configuring the terminal with configuration information for determining the transmission order of the K CSI-RSs includes at least one of the following (1) to (3).

[0164] (1) The network side device configures or associates a second parameter m with the K CSI-RSs by first higher layer signaling, and the second parameter m indicates that the interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units.

[0165] (2) The network side device, by second higher layer signaling, sets or associates a second parameter m for the K CSI-RSs and sets or associates a third parameter e for each of the CSI-RSs, where the third parameter e is for indicating that the interval between the transmission time domain position associated with the CSI-RS and the target time domain position is m*e first time domain units, and the target time domain position includes one of the transmission time domain position and the reference time domain position associated with the first transmitted CSI-RS.

[0166] (3) The network side device sets a fourth parameter d for each of the CSI-RSs by third higher layer signaling, and the fourth parameter d is used by the terminal to obtain the transmission time domain position of the CSI-RS.

[0167] In an embodiment of the present application, the network side device configures K channel state information reference signals (CSI-RS) for the terminal, thereby helping the terminal to accurately obtain configuration information on the transmission order of the K CSI-RS.

[0168] The channel state information acquisition device and the CSI-RS transmission order determination device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component of an electronic device, such as an integrated circuit or chip. The electronic device may be a terminal or other device other than a terminal. Exemplarily, the terminal may include, but is not limited to, the types of terminal 11 listed above, and the other device may be a server, a network attached storage (NAS), etc. The embodiments of the present application are not specifically limited.

[0169] 7 shows a schematic diagram of the configuration of a channel state information acquisition device provided in an embodiment of the present application. As shown in FIG. 7, the device 700 mainly includes a first acquisition module 701, a first determination module 702 and a second acquisition module 703.

[0170] In an embodiment of the present application, the first obtaining module 701 obtains a first parameter set for each CSI-RS among the K CSI-RSs by a network side device, where K is an integer greater than 1. The first determining module 702 determines a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling when the first parameters among the K CSI-RSs are not completely the same. The second obtaining module 703 obtains channel state information based on a power parameter associated with the first reference CSI-RS, and obtains power information required for calculating the channel state information from the power parameter.

[0171] In one alternative implementation, the pre-defined rules include: determining a CSI-RS with the largest CSI-RS identifier among the K CSI-RSs as the first reference CSI-RS; determining a CSI-RS with the smallest CSI-RS identifier among the K CSI-RSs as the first reference CSI-RS; setting a CSI-RS that is configured first in first configuration signaling for configuring the K CSI-RSs as the first reference CSI-RS; and setting the CSI-RS that was configured last in the first configuration signaling for configuring the K CSI-RSs as the first reference CSI-RS.

[0172] In one optional implementation, the second acquisition module 703 further acquires channel state information based on a power parameter associated with any one of the K CSI-RSs when the first parameters between the K CSI-RSs are completely the same.

[0173] In one alternative implementation, the first parameter is: a first identifier for indicating an identifier of the CSI-RS; a pattern configuration for indicating at least one of a symbol position occupied by the CSI-RS in one slot, a subcarrier position occupied by the CSI-RS in one physical resource block PRB, and a frequency domain position in a carrier or bandwidth portion BWP of the CSI-RS; a power parameter for indicating power information associated with the CSI-RS; and a second identifier for indicating a scrambling identifier associated with the CSI-RS.

[0174] In one alternative implementation, the first determination module 702 further determines a transmission order of the K CSI-RS.

[0175] In one alternative implementation, determining the transmission order of the K CSI-RSs comprises: obtaining a second parameter m set by or associated with the first higher layer signaling by the network side device; determining a transmission order of the K CSI-RSs based on the second parameter m and a first default rule, wherein an interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units.

[0176] In one alternative implementation, the first default rule is: transmitting the K CSI-RSs in descending order of CSI-RS identifiers; transmitting the K CSI-RSs in ascending order of CSI-RS identifiers; transmitting the K CSI-RSs in order of oldest to newest configuration order of the CSI-RSs; and transmitting the K CSI-RSs in order of most recent configuration order of each of the CSI-RSs.

[0177] In one alternative implementation, determining the transmission order of the K CSI-RSs comprises: obtaining a second parameter m configured for or associated with the K CSI-RSs and a third parameter e configured for or associated with each of the CSI-RSs, wherein the second parameter m and the third parameter e are for indicating that an interval between a transmission time domain location associated with a CSI-RS and a target time domain location is m*e first time domain units, and the target time domain location includes one of a transmission time domain location associated with a first transmitted CSI-RS and a reference time domain location; obtaining a first time-domain unit offset value corresponding to each of the CSI-RSs based on a second parameter m and a third parameter e associated with each of the CSI-RSs; obtaining a transmission time domain position associated with each CSI-RS according to the first time domain unit offset value corresponding to each CSI-RS; determining that the K CSI-RSs were transmitted in ascending order of the first time domain unit offset value.

[0178] In one alternative implementation, determining the transmission order of the K CSI-RSs comprises: acquiring a fourth parameter d set for each of the CSI-RSs by the network side device, the fourth parameter d being for a terminal to acquire a transmission time domain position of the CSI-RS; obtaining a first time domain unit offset value corresponding to each of the CSI-RSs according to the fourth parameter d for each of the CSI-RSs; obtaining a transmission time domain position associated with each CSI-RS according to the first time domain unit offset value corresponding to each CSI-RS; determining that the K CSI-RSs were transmitted in ascending order of the first time domain unit offset value.

[0179] In one alternative implementation, when the first time domain unit is a symbol, the first determination module 702 determines that a time domain symbol position is not configured in a pattern configuration associated with the K CSI-RSs, or determines that some or all of the time domain symbol positions configured in a pattern configuration associated with the K CSI-RSs are invalid.

[0180] In one alternative implementation, the time domain symbol position associated with the first transmitted CSI-RS of the K CSI-RSs is determined by a second default rule.

[0181] In one alternative implementation, the second default rule is: the time-domain symbol position associated with the first transmitted CSI-RS is the first time-domain symbol of the associated slot; the time domain symbol position associated with the first transmitted CSI-RS is a time domain symbol position set in the pattern of the CSI-RS.

[0182] In one alternative implementation, the second determination module 702 further determines that, when the network side device configures the K CSI-RSs such that the patterns associated with each CSI-RS are not exactly the same or the symbol indices associated with each CSI-RS are not exactly the same, a symbol interval between a symbol index associated with any one of the K CSI-RSs and a first reference symbol index does not exceed a first value.

[0183] In one alternative implementation, the symbol index associated with any one of the CSI-RSs is between 0 and N-1, where N is the number of symbols in one slot, or the any one of the CSI-RSs is transmitted within one slot or within no more than the transmission slots indicated by the network side device.

[0184] In one alternative implementation, the first value is determined by a fed back capability of the terminal.

[0185] In one alternative implementation, the second acquisition module 703 further performs, when the transmission symbols of the K CSI-RS set by the network side device do not meet the feedback capability of the terminal, not to feedback the channel state information or not to update the channel state information.

[0186] In one alternative implementation, the first reference symbol index is determined by a setting of a network side device or a third default rule.

[0187] In one alternative implementation, the third default rule includes that the first reference symbol index is a symbol index associated with a first CSI-RS sent or configured by the network side device.

[0188] In an alternative implementation form, when the network side device configures the K CSI-RSs so that the patterns associated with each CSI-RS are not exactly the same or the symbol indices associated with each CSI-RS are not exactly the same, the second determination module 702 further determines that the symbol interval between time domain positions associated with two adjacently transmitted or configured CSI-RSs is any value within [m*Ny, m*N+y], where m represents the number of slots between the time domain positions associated with two adjacent CSI-RSs, N is the number of symbols in one slot, and y is a second value.

[0189] In one alternative implementation, the symbol index associated with any one of the CSI-RSs is between 0 and N-1, where N is the number of symbols in one slot, or the any one of the CSI-RSs is transmitted within one slot or within no more than the transmission slots indicated by the network side device.

[0190] In one alternative implementation, the second value is determined by the fed back capabilities of the terminal.

[0191] In one alternative implementation, the second acquisition module 703 further does not perform feedback of channel state information or does not perform update of channel state information when the transmission symbol interval between two adjacently transmitted or configured CSI-RSs among the K CSI-RSs configured by the network side device is not within [m*Ny, m*N+y].

[0192] In one alternative implementation, the second determining module 702 further determines a frequency domain resource location associated with each CSI-RS among the K CSI-RS.

[0193] In one alternative implementation, the spacing between the frequency domain resource location associated with any one of the CSI-RSs and the first reference frequency domain resource location does not exceed a third value.

[0194] In one optional implementation, the second acquisition module 703 further performs, when the frequency domain resource locations associated with the K CSI-RSs configured by the network side device do not satisfy the feedback capability of the terminal, not feeding back the channel state information or not updating the channel state information.

[0195] In one alternative implementation, the first reference frequency domain resource location is determined according to a setting of a network side device or a fourth default rule.

[0196] In one alternative implementation, the fourth default rule includes that the first reference frequency domain resource index is the frequency domain resource index associated with the first CSI-RS transmitted or configured by the network side device.

[0197] 8 shows a schematic diagram of the structure of an apparatus for determining the CSI-RS transmission order provided in an embodiment of the present application. As shown in FIG. 8, the apparatus 800 mainly includes a third obtaining module 801 and a second determining module 802.

[0198] In an embodiment of the present application, the third obtaining module 801 obtains configuration parameters configured for each CSI-RS among the K CSI-RSs by the network side device, where K is an integer greater than 1. The second determining module 802 determines a transmission order of the K CSI-RSs according to first information, where the first information includes at least one of configuration information of the network side device and a default rule.

[0199] In one alternative implementation, the step of determining the transmission order of the K CSI-RSs using first information includes: obtaining a second parameter m set by or associated with the first higher layer signaling by the network side device; and obtaining a transmission order of the K CSI-RSs based on the second parameter m and a first default rule, wherein an interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units.

[0200] In one alternative implementation, the first default rule is: transmitting the K CSI-RSs in descending order of CSI-RS identifiers; transmitting the K CSI-RSs in ascending order of CSI-RS identifiers; transmitting the K CSI-RSs in order of oldest to newest configuration order of the CSI-RSs; and transmitting the K CSI-RSs in order of most recent configuration order of each of the CSI-RSs.

[0201] In one alternative implementation, the step of determining the transmission order of the K CSI-RSs using first information includes: obtaining a second parameter m configured for or associated with the K CSI-RSs and a third parameter e configured for or associated with each of the CSI-RSs, wherein the second parameter m and the third parameter e are for indicating that an interval between a transmission time domain location associated with a CSI-RS and a target time domain location is m*e first time domain units, and the target time domain location includes one of a transmission time domain location associated with a first transmitted CSI-RS and a reference time domain location; obtaining a first time-domain unit offset value corresponding to each of the CSI-RSs based on a second parameter m and a third parameter e associated with each of the CSI-RSs; obtaining a transmission time domain position associated with each CSI-RS according to the first time domain unit offset value corresponding to each CSI-RS; determining that the K CSI-RSs were transmitted in ascending order of the first time domain unit offset value.

[0202] In one alternative implementation, the step of determining the transmission order of the K CSI-RSs using first information includes: acquiring a fourth parameter d set for each of the CSI-RSs by the network side device, the fourth parameter d being for a terminal to acquire a transmission time domain position of the CSI-RS; obtaining a first time domain unit offset value corresponding to each of the CSI-RSs according to the fourth parameter d for each of the CSI-RSs; obtaining a transmission time domain position associated with each CSI-RS according to the first time domain unit offset value corresponding to each CSI-RS; determining that the K CSI-RSs were transmitted in ascending order of the first time domain unit offset value.

[0203] In one alternative implementation, the second determination module 802 further determines, when the first time domain unit is a symbol, that a time domain symbol position is not configured in the pattern configuration associated with the K CSI-RSs, or that some or all of the time domain symbol positions configured in the pattern configuration associated with the K CSI-RSs are invalid.

[0204] In one alternative implementation, the time domain symbol position associated with the first transmitted CSI-RS of the K CSI-RSs is determined by a second default rule.

[0205] In one alternative implementation, the second default rule is: the time-domain symbol position associated with the first transmitted CSI-RS is the first time-domain symbol of the associated slot; the time domain symbol position associated with the first transmitted CSI-RS is a time domain symbol position set in the pattern of the CSI-RS.

[0206] In one alternative implementation, the second determination module 802 further determines that, when the network side device configures the K CSI-RSs such that the patterns associated with each CSI-RS are not exactly the same or the symbol indices associated with each CSI-RS are not exactly the same, a symbol interval between a symbol index associated with any one of the K CSI-RSs and a first reference symbol index does not exceed a first value.

[0207] In one alternative implementation, the symbol index associated with any one of the CSI-RSs is between 0 and N-1, where N is the number of symbols in one slot, or the any one of the CSI-RSs is transmitted within one slot or within no more than the transmission slots indicated by the network side device.

[0208] In one alternative implementation, the first value is determined by a fed back capability of the terminal.

[0209] In one alternative implementation, the device further includes an execution module that does not perform feedback of channel state information or does not perform update of channel state information when the transmission symbols of the K CSI-RSs set by the network side device do not satisfy the feedback capability of the terminal.

[0210] In one alternative implementation, the first reference symbol index is determined by the terminal according to a setting of a network side device or a third default rule.

[0211] In one alternative implementation, the third default rule includes that the first reference symbol index is a symbol index associated with a first CSI-RS sent or configured by the network side device.

[0212] In an alternative implementation form, when the network side device configures the K CSI-RSs so that the patterns associated with each CSI-RS are not exactly the same or the symbol indices associated with each CSI-RS are not exactly the same, the second determination module 802 further determines that the symbol interval between time domain positions associated with two adjacently transmitted or configured CSI-RSs is any value within [m*Ny, m*N+y], where m represents the number of slots between the time domain positions associated with two adjacent CSI-RSs, N is the number of symbols in one slot, and y is a second value.

[0213] In one alternative implementation, the symbol index associated with any one of the CSI-RSs is between 0 and N-1, where N is the number of symbols in one slot, or the any one of the CSI-RSs is transmitted within one slot or within no more than the transmission slots indicated by the network side device.

[0214] In one alternative implementation, the second value is determined by the fed back capabilities of the terminal.

[0215] In one alternative implementation, the network side device further includes an execution module that does not perform feedback of channel state information or does not perform update of channel state information when a transmission symbol interval between two adjacently transmitted or configured CSI-RSs among the K CSI-RSs configured by the network side device is not within [m*Ny, m*N+y].

[0216] In one alternative implementation, the second determining module 802 further determines a frequency domain resource location associated with each CSI-RS among the K CSI-RS.

[0217] In one alternative implementation, the spacing between the frequency domain resource location associated with any one of the CSI-RSs and the first reference frequency domain resource location does not exceed a third value.

[0218] In one alternative implementation, the device further comprises an execution module that, if the frequency domain resource locations associated with the K CSI-RSs configured by the network side device do not satisfy the feedback capability of the terminal, does not perform feedback of channel state information or does not perform update of the channel state information.

[0219] In one alternative implementation, the first reference frequency domain resource location is determined according to a setting of a network side device or a fourth default rule.

[0220] In one alternative implementation, the fourth default rule includes that the first reference frequency domain resource index is the frequency domain resource index associated with the first CSI-RS transmitted or configured by the network side device.

[0221] 9 shows a schematic diagram of the configuration of a CSI-RS configuration device provided in an embodiment of the present application. As shown in FIG. 9, the device 900 mainly includes a fourth acquisition module 901 and a first configuration module 902.

[0222] In an embodiment of the present application, the fourth obtaining module 901 obtains a first parameter of each CSI-RS among the K CSI-RSs, where K is an integer greater than 1. The first setting module 902 sets the first parameter of each CSI-RS among the K CSI-RSs for a terminal, and, if the first parameters among the K CSI-RSs are not completely identical, determines a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling, and then instructs the terminal to obtain channel state information based on a power parameter associated with the first reference CSI-RS, where the power parameter is for obtaining power information required for calculating channel state information.

[0223] In one alternative implementation, the first parameter is: a first identifier for indicating an identifier of the CSI-RS; a pattern configuration for indicating at least one of a symbol position occupied by the CSI-RS in one slot, a subcarrier position occupied by the CSI-RS in one physical resource block PRB, and a frequency domain position in a carrier or bandwidth portion BWP of the CSI-RS; a power parameter for indicating power information associated with the CSI-RS; and a second identifier for indicating a scrambling identifier associated with the CSI-RS.

[0224] In one alternative implementation, the first setting module 902 further sets, for the terminal, setting information for determining a transmission order of the K CSI-RS.

[0225] In one alternative implementation, the step of configuring the terminal with configuration information for determining the transmission order of the K CSI-RSs includes: configuring or associating, by first higher layer signaling, a second parameter m for the K CSI-RSs, the second parameter m being for indicating that an interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units; configuring or associating, by second higher layer signaling, a second parameter m for the K CSI-RSs and configuring or associating, for each of the CSI-RSs, a third parameter e for indicating that an interval between a transmission time domain location associated with the CSI-RS and a target time domain location is m*e first time domain units, and the target time domain location includes one of the transmission time domain location associated with a first transmitted CSI-RS and a reference time domain location; and a step of setting a fourth parameter d for each of the CSI-RSs by third higher layer signaling, the fourth parameter d being for the terminal to obtain a transmission time domain position of the CSI-RS.

[0226] 10 shows a schematic diagram of the structure of a CSI-RS transmission order indication device provided in an embodiment of the present application. As shown in FIG. 10, the device 1000 mainly includes a second setting module 1001 and a third setting module 1002.

[0227] In an embodiment of the present application, the second configuration module 1001 configures K channel state information reference signals (CSI-RSs) for a terminal, where K is an integer greater than 1. The third configuration module 1002 configures configuration information for the terminal to determine the transmission order of the K CSI-RSs.

[0228] In one alternative implementation, the step of configuring the terminal with configuration information for determining the transmission order of the K CSI-RSs includes: configuring or associating, by first higher layer signaling, a second parameter m for the K CSI-RSs, the second parameter m being for indicating that an interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units; configuring or associating, by second higher layer signaling, a second parameter m for the K CSI-RSs and configuring or associating, for each of the CSI-RSs, a third parameter e for indicating that an interval between a transmission time domain location associated with the CSI-RS and a target time domain location is m*e first time domain units, and the target time domain location includes one of the transmission time domain location associated with a first transmitted CSI-RS and a reference time domain location; and a step of setting a fourth parameter d for each of the CSI-RSs by third higher layer signaling, the fourth parameter d being for the terminal to obtain a transmission time domain position of the CSI-RS.

[0229] The above-mentioned devices provided in the embodiments of the present application can realize the steps realized in the method embodiments of Figures 2 to 6 and achieve the same technical effects, and detailed descriptions thereof will be omitted here to avoid repetition.

[0230] Optionally, as shown in Figure 11, an embodiment of the present application further provides a communication device 1100 including a processor 1101 and a memory 1102 storing a program or command executable by the processor 1101. For example, when the communication device 1100 is a terminal, the program or command is executed by the processor 1101 to realize the steps of the method embodiments shown in Figures 2 to 4, and the same technical effects can be achieved. When the communication device 1100 is a network-side device, the program or command is executed by the processor 1101 to realize the steps of the method embodiments shown in Figures 5 to 6, and the same technical effects can be achieved. In order to avoid repetition, detailed descriptions will be omitted here.

[0231] An embodiment of the present application further provides a terminal, comprising a processor and a communication interface, the communication interface communicating with an external device, and the processor implementing the above method 200, 300, or 400. The embodiment of the terminal corresponds to the embodiment of the above terminal-side method, and the respective implementation steps and implementation forms of the above method embodiments can be applied to the embodiment of the terminal, and the same technical effects can be achieved. Specifically, Figure 12 is a schematic diagram of the hardware configuration of a terminal implementing the embodiment of the present application.

[0232] The terminal 1200 includes at least some elements such as, but not limited to, a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209 and a processor 1210.

[0233] As will be understood by those skilled in the art, the terminal 1200 may further include a power source (e.g., a battery) for supplying power to each component, and the power source may be logically connected to the processor 1210 via a power management system, which may further realize functions such as charge / discharge management and power consumption management. The configuration of the terminal shown in FIG. 12 is not intended to limit the terminal, and the terminal may include more or fewer components than those shown, a combination of some components, or a different component arrangement, and detailed description thereof will be omitted here.

[0234] It should be understood that in an embodiment of the present application, the input unit 1204 may include a graphics processing unit (GPU) 12041 and a microphone 12042 for processing image data of still or video images captured by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 1206 may include a display panel 12061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1207 includes at least one of a touch panel 12071 and other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include two parts: a touch detection device and a touch controller. The other input devices 12072 may include, but are not limited to, a physical keyboard, function buttons (e.g., volume control buttons, switch buttons, etc.), a trackball, a mouse, and a control lever. Detailed descriptions thereof are omitted here.

[0235] In the embodiment of the present application, the radio frequency unit 1201 can receive downlink data from the network side device and then transmit the data to the processor 1210 for processing. The radio frequency unit 1201 can also transmit uplink data to the network side device. Typically, the radio frequency unit 1201 includes, but is not limited to, an antenna, an amplifier, a receiver / transmitter, a coupler, a low-noise amplifier, a duplexer, etc.

[0236] The memory 1209 can be used to store software programs or commands and various data. The memory 1209 may mainly include a first storage area for storing programs or commands, which can store an operating system, an application or command required for at least one function (e.g., an audio playback function, an image playback function, etc.), and a second storage area for storing data. The memory 1209 may include volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. Here, the nonvolatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory may be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synch link dynamic random access memory (SLDRAM), and direct Rambus random access memory (DRRAM). Memory 1209 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

[0237] The processor 1210 may include one or more processing units, and may selectively integrate an application processor that mainly processes operations related to an operating system, a user interface, applications, etc., and a modem processor that mainly processes wireless communication signals, such as a baseband processor, into the processor 1210. It is understood that the modem processor need not be integrated into the processor 1210.

[0238] The processor 1210 is configured to acquire first parameters of K channel state information reference signals (CSI-RSs) set by a network side device, and, if K is an integer greater than 1 and the first parameters among the K CSI-RSs are not completely identical, determine a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling, acquire channel state information based on a power parameter associated with the first reference CSI-RS, and acquire power information required for calculating the channel state information from the power parameter.

[0239] In an embodiment of the present application, a terminal obtains first parameters set for each CSI-RS among the K CSI-RSs by a network side device. Because the first parameters of the K CSI-RSs are not exactly the same, the terminal determines a first reference CSI-RS from the K CSI-RSs according to a preset rule or instructions from network upper layer signaling, and then obtains channel state information based on the determined first reference CSI-RS. This solves the problem that the terminal is unable to determine the first reference CSI-RS and therefore unable to accurately obtain CSI information because some parameters of the obtained K CSI-RSs are not exactly the same.

[0240] Alternatively, the processor 1210 obtains configuration parameters for K CSI-RSs configured by the network side device, where K is an integer greater than 1, and determines a transmission order of the K CSI-RSs based on first information, where the first information includes at least one of configuration information of the network side device and a default rule.

[0241] The terminal 1200 provided in the embodiment of the present application can further realize each step of the method embodiment shown in Figures 2 to 4 above and achieve the same technical effects, and detailed description thereof will be omitted here to avoid repetition.

[0242] An embodiment of the present application further provides a network-side device, comprising a processor and a communication interface, wherein the processor implements the above method 500 or 600, and the communication interface communicates with an external device. The embodiment of the network-side device corresponds to the embodiment of the above network-side method, and the respective implementation steps and realization modes of the above method embodiments can be applied to the embodiment of the network-side device, and the same technical effects can be achieved.

[0243] Specifically, an embodiment of the present application further provides a network side device. As shown in Figure 13, the network side device 1300 includes an antenna 1301, a radio frequency device 1302, a baseband device 1303, a processor 1304, and a memory 1305. The antenna 1301 is connected to the radio frequency device 1302. In the uplink direction, the radio frequency device 1302 receives information through the antenna 1301 and transmits the received information to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes the information to be transmitted and transmits it to the radio frequency device 1302, and the radio frequency device 1302 processes the received information before transmitting it via the antenna 1301.

[0244] In the above embodiments, the methods performed by the network side equipment can be implemented in a baseband device 1303, which includes a baseband processor.

[0245] The baseband device 1303 may, for example, include at least one baseband board on which multiple chips are installed, and as shown in FIG. 13, one of the chips is, for example, a baseband processor connected to a memory 1305 via a bus interface and calling a program in the memory 1305 to perform the operations of the network equipment shown in the above method embodiments.

[0246] The network side device may further include a network interface 1306, which may be, for example, a common public radio interface (CPRI).

[0247] Specifically, the network side device 1300 of the embodiment of the present application further includes a command or program stored in the memory 1305 and executable by the processor 1304, and the processor 1304 invokes the command or program in the memory 1305 to execute the method executed by each module shown in Fig. 9 or Fig. 10, thereby achieving the same technical effect. In order to avoid repetition, detailed description will be omitted here.

[0248] The embodiments of the present application further provide a readable storage medium storing a program or command, which, when executed by a processor, realizes each step of the method embodiments shown in Figures 2 to 6 above, and can achieve the same technical effects. In order to avoid repetition, detailed descriptions are omitted here.

[0249] The embodiments of the present application further provide a chip including a processor and a communication interface, the communication interface and the processor being coupled together, and the processor executing a program or command to realize each step of the method embodiments shown in Figures 2 to 6 above, so as to achieve the same technical effects, and detailed descriptions thereof will be omitted here to avoid repetition.

[0250] It should be understood that the chips referred to in the embodiments of this application may also be referred to as system level chips, system chips, chip systems, or system-on-chips, etc.

[0251] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium and, when executed by at least one processor, realizes each step of the method embodiments shown in Figures 2 to 6 above, so as to achieve the same technical effects, and detailed descriptions thereof will be omitted here to avoid repetition.

[0252] An embodiment of the present application further provides a CSI information acquisition system including a terminal and a network side device, wherein the terminal performs the steps of the method embodiment shown in FIG. 2 above and the network side device performs the steps of the method embodiment shown in FIG. 5 above, or the terminal performs the steps of the method embodiment shown in FIG. 3 above and the network side device performs the steps of the method embodiment shown in FIG. 6 above, which can achieve the same technical effects, and detailed description thereof will be omitted here to avoid repetition.

[0253] It should be noted that, as used herein, terms such as "comprises," "consists of," or any other variation thereof are intended to include a non-exclusive inclusion, such that a process, method, article, or apparatus comprising a set of elements includes not only those elements but also other elements not expressly specified or inherent in such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element. It should also be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may include performing functions substantially simultaneously or in the reverse order, depending on such functionality. For example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to one example may be combined in other examples.

[0254] From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be realized in the form of a combination of software and a necessary common hardware platform, and of course, they can also be realized by hardware, but in many cases the former is a more preferred embodiment. Based on this view, the technical solutions of the present application can be substantially embodied in the form of a computer software product, which is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes a plurality of commands that cause a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0255] Although the examples of the present application have been described above with reference to the drawings, the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative and not limiting. Based on the suggestions of the present application, many forms that a person skilled in the art can make without departing from the spirit of the present application and the scope of protection of the claims are all within the scope of protection of the present application.

Claims

1. a step of acquiring, by the terminal, a first parameter set for each CSI-RS among K channel state information reference signals (CSI-RSs) by a network side device, where K is an integer greater than 1; When first parameters between the K CSI-RSs are not completely the same, the terminal determines a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction of network upper layer signaling; A method for acquiring channel state information, comprising: a step in which the terminal acquires channel state information based on a power parameter associated with the first reference CSI-RS, the power parameter being for acquiring power information necessary for calculating the channel state information.

2. The predetermined rule is: determining a CSI-RS having a largest CSI-RS identifier among the K CSI-RSs as the first reference CSI-RS; determining a CSI-RS having a smallest CSI-RS identifier among the K CSI-RSs as the first reference CSI-RS; setting a CSI-RS that is initially configured in first configuration signaling for configuring the K CSI-RSs as the first reference CSI-RS; and setting the last configured CSI-RS in first configuration signaling for configuring the K CSI-RSs as the first reference CSI-RS.

3. 2. The method of claim 1, further comprising: when a first parameter between the K CSI-RSs is completely the same, the terminal acquires channel state information based on a power parameter associated with any one of the K CSI-RSs.

4. The first parameter is a first identifier for indicating an identifier of the CSI-RS; a pattern configuration for indicating at least one of a symbol position occupied by the CSI-RS in one slot, a subcarrier position occupied by the CSI-RS in one physical resource block (PRB), and a frequency domain position in a carrier or bandwidth portion (BWP) of the CSI-RS; a power parameter for indicating power information associated with the CSI-RS; and a second identifier for indicating a scrambling identifier associated with the CSI-RS.

5. before the step of obtaining channel state information, The method according to claim 1 , further comprising the step of: determining, by the terminal, a transmission order of the K CSI-RSs.

6. The step of determining a transmission order of the K CSI-RSs by the terminal includes: The terminal acquires a second parameter m that is set by or associated with the first higher layer signaling by the network side device; and a step of the terminal determining a transmission order of the K CSI-RSs based on the second parameter m and a first default rule, wherein an interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units.

7. The first default rule is: transmitting the K CSI-RSs in descending order of CSI-RS identifiers; transmitting the K CSI-RSs in ascending order of CSI-RS identifiers; Transmitting the K CSI-RSs sequentially in order of oldest configuration order of each CSI-RS; and transmitting the K CSI-RSs sequentially in a configuration order of the CSI-RSs in reverse order.

8. The step of determining a transmission order of the K CSI-RSs by the terminal includes: the terminal acquiring a second parameter m configured for or associated with the K CSI-RSs and a third parameter e configured for or associated with each of the CSI-RSs, the second parameter m and the third parameter e being for indicating that an interval between a transmission time domain position associated with a CSI-RS and a target time domain position is m*e first time domain units, and the target time domain position includes one of a transmission time domain position associated with a first transmitted CSI-RS and a reference time domain position; The terminal obtains a first time domain unit offset value corresponding to each of the CSI-RSs based on a second parameter m and a third parameter e associated with each of the CSI-RSs; The terminal obtains a transmission time domain position associated with each CSI-RS according to the first time domain unit offset value corresponding to each CSI-RS; and determining by the terminal that the K CSI-RSs have been transmitted in ascending order of the first time domain unit offset value.

9. The step of determining a transmission order of the K CSI-RSs by the terminal includes: a step of the terminal acquiring a fourth parameter d set for each of the CSI-RSs by the network side device, the fourth parameter d being for the terminal to acquire a transmission time domain position of the CSI-RS; The terminal obtains a first time domain unit offset value corresponding to each of the CSI-RSs based on the fourth parameter d of each of the CSI-RSs; The terminal obtains a transmission time domain position associated with each CSI-RS according to the first time domain unit offset value corresponding to each CSI-RS; and determining by the terminal that the K CSI-RSs have been transmitted in ascending order of the first time domain unit offset value.

10. 10. The method according to claim 6, wherein, when the first time domain unit is a symbol, the terminal determines that a time domain symbol position is not configured in a pattern configuration associated with the K CSI-RSs, or determines that some or all of the time domain symbol positions configured in a pattern configuration associated with the K CSI-RSs are invalid.

11. The method of claim 10 , wherein a time-domain symbol position associated with a first-transmitted CSI-RS among the K CSI-RSs is determined according to a second default rule.

12. The second default rule is: a time-domain symbol position associated with the first transmitted CSI-RS is a first time-domain symbol of an associated slot; the time domain symbol position associated with the first transmitted CSI-RS is a time domain symbol position set in the pattern of the CSI-RS.

13. 6. The method of claim 5, further comprising: when the network side device configures the K CSI-RSs such that the patterns associated with each CSI-RS are not completely identical or the symbol indexes associated with each CSI-RS are not completely identical, the terminal determining that a symbol interval between a symbol index associated with any one of the CSI-RSs and a first reference symbol index does not exceed a first value.

14. The method of claim 13, wherein a symbol index associated with any one of the CSI-RSs is 0 to N-1, where N is the number of symbols in one slot, or the any one of the CSI-RSs is transmitted within one slot or within no more than a transmission slot indicated by a network side device.

15. The method of claim 13 , wherein the first value is determined by a fed back capability of the terminal.

16. The method of claim 15, wherein if the transmission symbols of the K CSI-RSs set by the network side device do not satisfy the feedback capability of the terminal, the terminal does not perform feedback of channel state information or does not perform updating of channel state information.

17. The method of claim 13, wherein the terminal determines the first reference symbol index according to a setting of a network side device or a third default rule.

18. The method of claim 17, wherein the third default rule includes that the first reference symbol index is a symbol index associated with a first CSI-RS transmitted or configured by a network side device.

19. 6. The method of claim 5, further comprising: when the network side device configures the K CSI-RSs such that the patterns associated with each CSI-RS are not exactly the same or the symbol indices associated with each CSI-RS are not exactly the same, the terminal determining that a symbol interval between time domain positions associated with two adjacently transmitted or configured CSI-RSs is any value within [m*N-y, m*N+y], where m represents the number of slots between the time domain positions associated with two adjacent CSI-RSs, N is the number of symbols in one slot, and y is a second value.

20. 20. The method of claim 19, wherein a symbol index associated with any one of the CSI-RSs is 0 to N-1, where N is the number of symbols in one slot, or wherein any one of the CSI-RSs is transmitted within one slot or within no more than a transmission slot indicated by a network side device.

21. 20. The method of claim 19, wherein the second value is determined by a fed back capability of the terminal.

22. The method of claim 21, wherein, when a transmission symbol interval between two adjacently transmitted or configured CSI-RSs among the K CSI-RSs configured by the network side device is not within [m*N-y, m*N+y], the terminal does not perform feedback of channel state information or does not perform updating of channel state information.

23. before the step of obtaining channel state information, The method of claim 5 , further comprising the terminal determining a frequency domain resource location associated with each CSI-RS among the K CSI-RS.

24. The method of claim 23, wherein an interval between a frequency domain resource location associated with any one of the CSI-RSs and a first reference frequency domain resource location does not exceed a third value.

25. The method of claim 24, wherein, when the frequency domain resource locations associated with the K CSI-RSs configured by the network side device do not satisfy the feedback capability of the terminal, the terminal does not perform feedback of channel state information or does not perform updating of channel state information.

26. The method of claim 24, wherein the terminal determines the first reference frequency domain resource location according to a setting of a network side device or a fourth default rule.

27. The method of claim 26, wherein the fourth default rule includes that the first reference frequency domain resource index is a frequency domain resource index associated with a first CSI-RS transmitted or configured by a network side device.

28. A step in which the terminal acquires configuration parameters of K CSI-RSs configured by a network side device, where K is an integer greater than 1; A method for determining a CSI-RS transmission order, comprising: a step in which the terminal determines a transmission order of the K CSI-RSs based on first information, the first information including at least one of configuration information of a network side device and a default rule.

29. The step of determining a transmission order of the K CSI-RSs by the terminal based on first information includes: The terminal acquires a second parameter m that is set by or associated with the first higher layer signaling by the network side device; and a step of the terminal obtaining a transmission order of the K CSI-RSs based on the second parameter m and a first default rule, wherein an interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units.

30. The first default rule is: transmitting the K CSI-RSs in descending order of CSI-RS identifiers; transmitting the K CSI-RSs in ascending order of CSI-RS identifiers; Transmitting the K CSI-RSs sequentially in order of oldest configuration order of each CSI-RS; and transmitting the K CSI-RSs sequentially in a configuration order of the CSI-RSs in reverse order of their configuration order.

31. The step of determining a transmission order of the K CSI-RSs by the terminal based on first information includes: the terminal acquiring a second parameter m configured for or associated with the K CSI-RSs and a third parameter e configured for or associated with each of the CSI-RSs, the second parameter m and the third parameter e being for indicating that an interval between a transmission time domain position associated with a CSI-RS and a target time domain position is m*e first time domain units, and the target time domain position includes one of a transmission time domain position associated with a first transmitted CSI-RS and a reference time domain position; The terminal obtains a first time domain unit offset value corresponding to each of the CSI-RSs based on a second parameter m and a third parameter e associated with each of the CSI-RSs; The terminal obtains a transmission time domain position associated with each CSI-RS according to the first time domain unit offset value corresponding to each CSI-RS; and determining by the terminal that the K CSI-RSs have been transmitted in ascending order of the first time domain unit offset value.

32. The step of determining a transmission order of the K CSI-RSs by the terminal based on first information includes: a step of the terminal acquiring a fourth parameter d set for each of the CSI-RSs by the network side device, the fourth parameter d being for the terminal to acquire a transmission time domain position of the CSI-RS; The terminal obtains a first time domain unit offset value corresponding to each of the CSI-RSs based on the fourth parameter d of each of the CSI-RSs; The terminal obtains a transmission time domain position associated with each CSI-RS according to the first time domain unit offset value corresponding to each CSI-RS; and determining by the terminal that the K CSI-RSs have been transmitted in ascending order of the first time domain unit offset value.

33. The method of any one of claims 30 to 33, wherein, when the first time domain unit is a symbol, the terminal determines that a time domain symbol position is not configured in a pattern configuration associated with the K CSI-RSs, or determines that some or all of the time domain symbol positions configured in a pattern configuration associated with the K CSI-RSs are invalid.

34. The method of claim 33, wherein a time-domain symbol position associated with a first-transmitted CSI-RS among the K CSI-RSs is determined according to a second default rule.

35. The second default rule is: a time-domain symbol position associated with the first transmitted CSI-RS is a first time-domain symbol of an associated slot; the time domain symbol position associated with the first transmitted CSI-RS is a time domain symbol position set in the pattern of the CSI-RS.

36. 29. The method of claim 28, further comprising: when the network side device configures the K CSI-RSs such that the patterns associated with the K CSI-RSs are not completely identical or the symbol indexes associated with the K CSI-RSs are not completely identical, the terminal determining that a symbol interval between a symbol index associated with any one of the CSI-RSs and a first reference symbol index does not exceed a first value.

37. The method of claim 36, wherein a symbol index associated with any one of the CSI-RSs is 0 to N-1, where N is the number of symbols in one slot, or the any one of the CSI-RSs is transmitted within one slot or within no more than a transmission slot indicated by a network side device.

38. 37. The method of claim 36, wherein the first value is determined by a fed back capability of the terminal.

39. The method of claim 38, further comprising: when the transmission symbols of the K CSI-RSs configured by the network side equipment do not satisfy the feedback capability of the terminal, the terminal not performing feedback of channel state information or not performing update of channel state information.

40. The method of claim 36, wherein the first reference symbol index is determined by the terminal according to a setting of a network side device or a third default rule.

41. The method of claim 40, wherein the third default rule includes that the first reference symbol index is a symbol index associated with a first CSI-RS transmitted or configured by a network side device.

42. 29. The method of claim 28, further comprising, when the network side device configures the K CSI-RSs such that the patterns associated with each CSI-RS are not exactly the same or the symbol indices associated with each CSI-RS are not exactly the same, the terminal determining that a symbol interval between time domain positions associated with two adjacently transmitted or configured CSI-RSs is any value within [m*N-y, m*N+y], where m represents the number of slots between the time domain positions associated with two adjacent CSI-RSs, N is the number of symbols in one slot, and y is a second value.

43. The method of claim 42, wherein a symbol index associated with any one of the CSI-RSs is 0 to N-1, inclusive, where N is the number of symbols in one slot, or the any one of the CSI-RSs is transmitted within one slot or within no more than a transmission slot indicated by a network side device.

44. 43. The method of claim 42, wherein the second value is determined by a fed back capability of the terminal.

45. The method of claim 21, further comprising the step of: when a transmission symbol interval between two adjacently transmitted or configured CSI-RSs among the K CSI-RSs configured by the network side device is not within [m*N-y, m*N+y], the terminal not performing feedback of channel state information or not performing update of channel state information.

46. The method of claim 28, further comprising the terminal determining a frequency domain resource location associated with each CSI-RS among the K CSI-RS.

47. The method of claim 46, wherein an interval between a frequency domain resource location associated with any one of the CSI-RSs and a first reference frequency domain resource location does not exceed a third value.

48. The method of claim 47, wherein, when the frequency domain resource locations associated with the K CSI-RSs configured by the network side device do not satisfy the feedback capability of the terminal, the terminal does not perform feedback of channel state information or does not perform updating of channel state information.

49. The method of claim 47, wherein the terminal determines the first reference frequency domain resource location according to a setting of a network side device or a fourth default rule.

50. The method of claim 49, wherein the fourth default rule includes that the first reference frequency domain resource index is a frequency domain resource index associated with a first CSI-RS transmitted or configured by a network side device.

51. The network side device configures a first parameter of each CSI-RS among K channel state information reference signals (CSI-RSs) for a terminal, where K is an integer greater than 1; A CSI-RS configuration method, when first parameters between the K CSI-RSs are not completely identical, determining a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling, and then instructing the terminal to acquire channel state information based on a power parameter associated with the first reference CSI-RS, wherein the power parameter is for acquiring power information required for calculating the channel state information.

52. The first parameter is a first identifier for indicating an identifier of the CSI-RS; a pattern configuration for indicating at least one of a symbol position occupied by the CSI-RS in one slot, a subcarrier position occupied by the CSI-RS in one physical resource block (PRB), and a frequency domain position in a carrier or bandwidth portion (BWP) of the CSI-RS; a power parameter for indicating power information associated with the CSI-RS; and a second identifier for indicating a scrambling identifier associated with the CSI-RS.

53. The method according to claim 51 or 52, further comprising the step of configuring, by the network side device, configuration information for determining a transmission order of the K CSI-RSs for the terminal.

54. The step of the network side device setting configuration information for determining a transmission order of the K CSI-RSs to the terminal includes: the network side device configuring or associating a second parameter m with the K CSI-RSs by first higher layer signaling, the second parameter m being for indicating that an interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units; a step in which the network side device configures or associates a second parameter m with the K CSI-RSs and configures or associates a third parameter e with each of the CSI-RSs by second higher layer signaling, the third parameter e being for indicating that an interval between a transmission time domain position associated with the CSI-RS and a target time domain position is m*e first time domain units, and the target time domain position includes one of a transmission time domain position associated with a first transmitted CSI-RS and a reference time domain position; and a step of the network side device setting a fourth parameter d for each of the CSI-RSs by third higher layer signaling, the fourth parameter d being for a terminal to acquire a transmission time domain position of the CSI-RS.

55. A step of configuring K channel state information reference signals (CSI-RSs) for a terminal by a network side device, where K is an integer greater than 1; and a step in which the network side device sets configuration information for determining the transmission order of the K CSI-RSs to the terminal.

56. The step of the network side device setting configuration information for determining a transmission order of the K CSI-RSs to the terminal includes: the network side device configuring or associating a second parameter m with the K CSI-RSs by first higher layer signaling, the second parameter m being for indicating that an interval between transmission time domain positions associated with two adjacent CSI-RSs is m first time domain units; a step in which the network side device configures or associates a second parameter m with the K CSI-RSs and configures or associates a third parameter e with each of the CSI-RSs by second higher layer signaling, the third parameter e being for indicating that an interval between a transmission time domain position associated with the CSI-RS and a target time domain position is m*e first time domain units, and the target time domain position includes one of a transmission time domain position associated with a first transmitted CSI-RS and a reference time domain position; and a step of the network side device setting a fourth parameter d for each of the CSI-RSs by third higher layer signaling, the fourth parameter d being for a terminal to acquire a transmission time domain position of the CSI-RS.

57. a first acquisition module configured to acquire first parameters set for each of K channel state information reference signals (CSI-RSs) by a network side device, where K is an integer greater than 1; a first determination module for determining a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction of network upper layer signaling when first parameters between the K CSI-RSs are not completely the same; A channel state information acquisition device comprising: a second acquisition module that acquires channel state information based on a power parameter associated with the first reference CSI-RS, wherein the power parameter is for acquiring power information required for calculating the channel state information.

58. a third acquisition module for acquiring configuration parameters of K CSI-RSs configured by a network side device, where K is an integer greater than 1; A device for determining a CSI-RS transmission order, comprising: a second determination module that determines a transmission order of the K CSI-RSs based on first information, wherein the first information includes at least one of configuration information of a network side device and a default rule.

59. a fourth acquisition module for acquiring first parameters of each CSI-RS among the K CSI-RSs, where K is an integer greater than 1; a first setting module configured to set a first parameter of each CSI-RS among K CSI-RSs for a terminal, the first setting module configured to determine a first reference CSI-RS from the K CSI-RSs according to a preset rule or an instruction from network upper layer signaling when first parameters between the K CSI-RSs are not completely the same, and then instruct the terminal to acquire channel state information based on a power parameter associated with the first reference CSI-RS, the power parameter being for acquiring power information required for calculation of the channel state information.

60. a second setting module configured to set K channel state information reference signals (CSI-RSs) for a terminal, where K is an integer greater than 1; a third setting module configured to set, for the terminal, setting information for determining a transmission order of the K CSI-RSs.

61. A terminal comprising a processor and a memory that stores a program or command that can be executed by the processor, and when the program or command is executed by the processor, the steps of the channel state information acquisition method described in any one of claims 1 to 27 are realized, or the steps of the CSI-RS transmission order determination method described in any one of claims 28 to 50 are realized.

62. A network side device comprising: a processor; and a memory that stores a program or command that can be executed by the processor, wherein, when the program or command is executed by the processor, the steps of the CSI-RS configuration method described in any one of claims 51 to 54 are realized, or the steps of the CSI-RS transmission order determination method described in any one of claims 55 to 56 are realized.

63. A readable storage medium having a program or command stored thereon, which, when executed by a processor, causes the steps of the method for acquiring channel state information as set forth in any one of claims 1 to 27 to be realized, or the steps of the method for determining a CSI-RS transmission order as set forth in any one of claims 28 to 50 to be realized, or the steps of the method for configuring CSI-RS as set forth in any one of claims 51 to 54 to be realized, or the steps of the method for determining a CSI-RS transmission order as set forth in any one of claims 55 to 56 to be realized.

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