Methods and devices for determining resource, communication device and data carrier

Abstract

FIELD: wireless communication.SUBSTANCE: method which provides for obtaining a CSI-RS based on a CSI-RS resource. In this case, the number of configurable resource units in the frequency domain as part of the CSI-RS resource exceeds the minimum value of the first quantity and the second quantity. The second quantity represents the number of frequency domain resource units occupied by the first frequency domain resource that is capable of receiving downlink transmission.EFFECT: ensuring coordinated perception of the channel state information reference signal (CSI-RS) resource by the network device and the terminal, which guarantees high quality of subsequent data transmission between the network device and the terminal.14 cl, 12 dwg

Description

Field of technology to which the present invention relates

[0001] The present invention relates to the field of communication technology, in particular, to a resource determination method, a resource determination device, a communication system, a communication device and a machine-readable storage medium. Prior art of the present invention

[0002] The network device may send a channel state information reference signal (CSI-RS) to the terminal and configure a CSI-RS resource for the terminal, and the terminal may receive the CSI-RS on the CSI-RS resource configured by the network device. However, when the network device configures a CSI-RS resource for the terminal, problems may arise in some scenarios. Summary of the Invention

[0003] In order to solve the technical problems of the prior art, embodiments of the present invention provide a resource determination method, a resource determination device, a communication system, a communication device, and a machine-readable storage medium.

[0004] According to a first aspect of embodiments of the present invention, a method is provided for determining a resource that is implemented by a terminal, wherein the method comprises: obtaining a channel state information reference signal based on a channel state information reference signal resource, wherein the number of configurable frequency domain resource units for the channel state information reference signal resource is greater than or equal to a minimum value of a first quantity and a second quantity, and the second quantity is the number of frequency domain resource units occupied by the first frequency domain resource capable of receiving a downlink transmission.

[0005] According to a second aspect of the embodiments of the present invention, a method is provided for determining a resource that is implemented by a network device, wherein the method comprises: determining, based on a minimum value of a first quantity and a second quantity, a minimum value of a number of resource units in a frequency domain for a channel state information reference signal resource configured for a terminal, wherein the second quantity is a number of resource units in a frequency domain occupied by the first frequency domain resource capable of ensuring reception of a downlink transmission by the terminal.

[0006] According to a third aspect of embodiments of the present invention, a resource determining device is provided, wherein the device is configured in a terminal and includes: a receiving module configured to receive a channel state information reference signal based on a channel state information reference signal resource, wherein the number of configurable frequency domain resource units in the channel state information reference signal resource is greater than or equal to a minimum value of a first quantity and a second quantity, and the second quantity is the number of frequency domain resource units occupied by the first frequency domain resource capable of receiving a downlink transmission.

[0007] According to a fourth aspect of the embodiments of the present invention, a resource determining device is provided, wherein the device is configured in a network device and includes: a data processing module configured to determine, based on a minimum value of a first quantity and a second quantity, a minimum number of resource units in a frequency domain for a channel state information reference signal resource configured for a terminal, wherein the second quantity is a number of resource units in a frequency domain occupied by the first frequency domain resource capable of ensuring reception of a downlink transmission by the terminal.

[0008] According to a fifth aspect of the embodiments of the present invention, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to implement the resource determination method performed by the terminal described above, and the network device is configured to implement the resource determination method performed by the network device described above.

[0009] According to a sixth aspect of the embodiments of the present invention, a communication device is provided, including: a processor; and a memory for storing a computer program; wherein when the computer program is executed by the processor, a resource determination method is implemented, which is executed by the terminal described above.

[0010] According to a seventh aspect of the embodiments of the present invention, a communication device is provided, including: a processor; and a memory for storing a computer program; wherein when the computer program is executed by the processor, a method for determining a resource is implemented, which is executed by the network device described above.

[0011] According to an eighth aspect of the embodiments of the present invention, a computer-readable storage medium for storing a computer program is provided, wherein when the computer program is executed by the processor, the above-described method for determining a resource that is executed by the terminal is implemented.

[0012] According to a ninth aspect of the embodiments of the present invention, a computer-readable storage medium for storing a computer program is provided, wherein when the computer program is executed by the processor, the above-described method for determining a resource that is executed by the network device is implemented.

[0013] According to the embodiments of the present invention, the terminal may determine a first frequency domain resource capable of receiving a downlink transmission and determine the number of resource units in the frequency domain occupied by the first frequency domain resource, which is, for example, called a second quantity. Then, the terminal may receive the CSI-RS and determine that the number of configurable resource units in the frequency domain for the CSI-RS is greater than or equal to the minimum value of the first quantity and the second quantity. The number of resource units in the frequency domain in the CSI-RS resource configured by the network device for the terminal will not be less than the minimum value of the first quantity and the second quantity.Accordingly, this will provide a positive effect, which consists in ensuring a consistent perception of the CSI-RS resource by the network device and the terminal, which guarantees high quality of subsequent data transmission between the network device and the terminal. Brief description of the drawings.

[0014] To more clearly illustrate the technical solutions implemented in the embodiments of the present invention, the drawings used in describing these embodiments will be briefly presented below. It is obvious that the drawings in the following description illustrate only some embodiments of the claimed invention. Based on these drawings, those skilled in the art can derive other drawings without any creative effort.

[0015] Fig. 1 schematically shows an application scenario according to one embodiment of the present invention.

[0016] Fig. 2 is a schematic diagram illustrating uplink resources and downlink resources according to one embodiment of the present invention.

[0017] Fig. 3 is a flow chart illustrating a method for determining a resource according to one embodiment of the present invention.

[0018] Fig. 4 is a diagram illustrating a first frequency domain resource according to one embodiment of the present invention.

[0019] Fig. 5 is a diagram illustrating another first frequency domain resource according to one embodiment of the present invention.

[0020] Fig. 6 is a flowchart illustrating another method for determining a resource according to one embodiment of the present invention.

[0021] Fig. 7 is a flowchart illustrating another method for determining a resource according to one embodiment of the present invention.

[0022] Fig. 8 is a flowchart illustrating a method for determining a resource according to one embodiment of the present invention.

[0023] Fig. 9 shows a structural diagram of a resource determination device according to one embodiment of the present invention.

[0024] Fig. 10 shows a structural diagram of a resource determination device according to one embodiment of the present invention.

[0025] Fig. 11 shows a structural diagram of a resource determination device according to one embodiment of the present invention.

[0026] Fig. 12 shows a block diagram of a resource determination device according to one embodiment of the present invention. Detailed disclosure of the present invention

[0027] The technical solutions implemented in the embodiments of the present invention will be clearly and fully described below in conjunction with the drawings illustrating these embodiments. It is obvious that the described embodiments of the claimed invention are only some, and not all, possible embodiments thereof. Based on these embodiments of the present invention, all other embodiments thereof, obtained by persons skilled in the art without any creative effort, shall be included within the scope of legal protection of the claimed invention.

[0028] The terms used in the embodiments of the present invention are intended solely to describe particular embodiments thereof and do not in any way limit the embodiments of the claimed invention. The singular forms indicated by the indefinite and definite articles used in the description of the embodiments of the present invention, as well as in the appended claims, are intended to also cover the plural forms, unless the context clearly dictates otherwise. It should also be understood that, as used herein, the term "and / or" refers to and includes any possible combinations of one or more associated listed elements.

[0029] It should be understood that although terms such as "first," "second," "third," etc. may be used in the disclosure of embodiments of the present invention to describe various types of information, this information should not be limited to these terms. These terms are used merely to distinguish between similar types of information. For example, without departing from the scope of the embodiments of the present invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" used herein may be interpreted as "when," or "upon," or "upon determining that."

[0030] For the sake of brevity and ease of understanding, the terms "more than" or "less than", "higher than" or "lower than" are used in this document when defining the ratio of sizes. However, it should be understood by those skilled in the art that the term "more than" also includes such a meaning as "greater than or equal to", and the term "less than" also includes such a meaning as "less than or equal to"; the term "higher than" also includes such a meaning as "higher than or equal to", and the term "lower than" also includes such a meaning as "lower than or equal to".

[0031] Fig. 1 schematically shows an application scenario according to one embodiment of the present invention.

[0032] As shown in Fig. 1, embodiments of the present invention can be applied to a scenario in which a terminal interacts with a network device, but they are not limited to this scenario. The structural units shown in Fig. 1 are for illustrative purposes only. Examples of implementations or embodiments of the present invention may include all or some of the structural units shown in Fig. 1, as well as other structural units not shown in Fig. 1. The number of structural units is arbitrary and is not limited to the number shown in Fig. 1. The connections between the structural units shown in Fig. 1 are for example only. Any structural units may be connected or not connected, and their connection may be carried out in any way, and may be direct or indirect, wired or wireless.

[0033] In one embodiment of the present invention, the network device may configure a specific sub-band for the terminal; for example, it may configure an uplink sub-band in a first slot and a downlink sub-band in a second slot for the terminal.

[0034] The first slot includes at least one of the following slots: a downlink slot and a flexible slot. The second slot includes at least one of the following slots: an uplink slot and a flexible slot.

[0035] The network device can perform full-duplex communication in the first slot and the second slot. Therefore, the first slot and the second slot can also be referred to as SBFD (sub-band full-duplex) slots, where the first slot is an SBFD slot configured with an uplink sub-band, and the second slot is an SBFD slot configured with a downlink sub-band. The terminal may be a terminal device capable of performing half-duplex communication in the SBFD slot. For example, in the SBFD slot, the terminal can perform uplink transmission but cannot simultaneously receive downlink transmission, or can receive downlink transmission but cannot simultaneously perform uplink transmission. The terminal may be a terminal device supporting the SBFD function and may also be referred to as an SBFD-compatible terminal.

[0036] Fig. 2 is a schematic diagram illustrating uplink resources and downlink resources according to one embodiment of the present invention.

[0037] As shown in Fig. 2, the activated BWP (bandwidth portion) corresponding to a downlink time domain unit includes an uplink sub-band, a guard frequency interval, and a downlink sub-band, wherein the network device configures the uplink sub-band and the guard frequency interval for the terminal in the downlink time domain unit. Among the frequency domain resources corresponding to the downlink time domain unit, the frequency domain resources other than the uplink sub-band and the guard frequency interval may be referred to as a downlink sub-band.The frequency domain resources in the uplink sub-band may serve as uplink resources, the frequency domain resources in the downlink sub-band may serve as downlink resources, and the guard frequency interval may not be used for transmitting information, including data and / or signals, thereby ensuring, to a certain extent, frequency domain localization and preventing mutual interference during uplink and downlink communications. Alternatively, if a network device plans to transmit only on the uplink or only on the downlink, then the guard frequency interval is not required for frequency domain localization between the uplink and downlink, and the guard frequency interval may be used for data transmission.

[0038] In one embodiment of the present invention, a time domain unit includes at least one of the following elements: a frame, a subframe, a slot, and a symbol, where the symbol may be an OFDM (orthogonal frequency division multiplexing) symbol.

[0039] It should be noted that the embodiments of the present invention can be applied to a situation where a guard frequency interval is provided between an uplink sub-band and a downlink sub-band, as well as to a situation where a guard frequency interval is not provided between an uplink sub-band and a downlink sub-band.

[0040] In one embodiment of the present invention, a network device may configure a CSI-RS resource for a terminal, and the terminal may receive a CSI-RS on the CSI-RS resource configured by the network device.

[0041] Since the prior art does not consider the use of SBFD slots, and there are no uplink sub-bands and / or downlink sub-bands in the BWP, the minimum value of the configurable frequency domain resources for the CSI-RS resource is determined based on the BWP. However, if the network device configures an uplink sub-band and / or a downlink sub-band in the BWP for the terminal, SBFD slots must be provided; that is, not all the frequency domain resources in the BWP are used for downlink or uplink communication.

[0042] Taking a downlink slot as an example, an uplink sub-band can be configured in the BWP corresponding to the downlink slot. Then, the resources actually available for CSI-RS transmission must be frequency domain resources in the BWP different from the uplink sub-band. For example, if the frequency guard interval is not taken into account, the resource used for CSI-RS transmission is the downlink sub-band. If the minimum value of the configurable frequency domain resources for the CSI-RS resource is still determined based on the BWP, in some cases the minimum value of the configurable frequency domain resources for the CSI-RS resource may be determined as equal to the BWP, but the terminal cannot actually receive the CSI-RS on the uplink sub-band in the BWP; that is, the frequency domain resources on which the terminal actually receives the CSI-RS will be less than the BWP.Consequently, this may result in inconsistent perception of the CSI-RS resource between the network device and the terminal.

[0043] In one embodiment of the present invention, the configurable frequency domain resources in the CSI-RS resource may be characterized by a certain number of frequency domain resource units. For example, a frequency domain resource unit includes at least one of the following elements: a resource block (RB) and a resource element (RE).

[0044] In one embodiment of the present invention, the terminal may be, among other things, a mobile phone, a tablet, a wearable device, a sensor, an Internet of Things device, and other communication devices. The terminal can interact with a network device, and the network device includes, among other things, network devices used in communication systems such as 4G (fourth generation communication system), 5G, and 6G, such as a base station, a backbone network, etc.

[0045] Fig. 3 is a flowchart illustrating a resource determination method according to one embodiment of the present invention. The resource determination method according to this embodiment of the present invention can be implemented by a terminal.

[0046] As shown in Fig. 3, the method for determining the resource may include performing the step described below:

[0047] Stage S301: acquiring a CSI-RS (channel state information reference signal) based on a channel state information reference signal resource, wherein the number of configurable frequency domain resource units in the channel state information reference signal resource is greater than or equal to a minimum value of a first quantity and a second quantity, and the second quantity is the number of frequency domain resource units occupied by the first frequency domain resource capable of receiving downlink transmission.

[0048] In one embodiment of the present invention, it is provided that when configuring a CSI-RS resource for a terminal, a network device may first determine a first frequency domain resource available for receiving a downlink transmission by the terminal and determine a second number of frequency domain resource units occupied by the first frequency domain resource. Then, based on the minimum value of the first number and the second number, a minimum value of the number of frequency domain resource units in the CSI-RS resource configured for the terminal is determined. After this, the number of frequency domain resource units in the CSI-RS resource configured by the network device for the terminal will not be less than the minimum value of the first number and the second number.

[0049] Accordingly, the terminal may determine a first frequency domain resource capable of receiving the downlink transmission and determine the number of resource units in the frequency domain occupied by the first frequency domain resource, which is, for example, referred to as the second quantity. The terminal may then receive the CSI-RS and determine that the number of configurable resource units in the frequency domain for the CSI-RS is greater than or equal to the minimum value of the first quantity and the second quantity, which can also be described as calculating that the number of configurable resource units in the frequency domain within the CSI-RS resource will not be less than the minimum value of the first quantity and the second quantity. Accordingly, this will achieve the positive effect of ensuring consistent perception of the CSI-RS resource by the network device and the terminal, thereby guaranteeing high quality of subsequent data transmission between the network device and the terminal.

[0050] Alternatively, the terminal determines the CSI-RS resource according to the protocol agreement or according to the configuration information of the network device, and receives the CSI-RS based on the CSI-RS resource, wherein the relationship between the number of configurable resource units in the frequency domain in the CSI-RS resource and the minimum value of the first quantity and the second quantity is agreed upon by the protocol or determined by the network device, and does not necessarily require the participation of the terminal; for example, the number of configurable resource units in the frequency domain in the CSI-RS resource is greater than or equal to the minimum value of the first quantity and the second quantity.In this case, the terminal does not need to perform one or more of the following operations: determining a first frequency domain resource capable of receiving the downlink transmission; determining a number of frequency domain resource units occupied by the first frequency domain resource; establishing that the number of configurable frequency domain resource units in the CSI-RS is greater than or equal to the minimum value of the first quantity and the second quantity; generating an estimate that the number of configurable frequency domain resource units for the CSI-RS will be no less than the minimum value of the first quantity and the second quantity.

[0051] In one embodiment of the present invention, the first quantity is determined based on a predetermined rule, or the first quantity is configured by the network device. For example, in cases where the resource unit in the frequency domain is an RB block, the first quantity may be 24.

[0052] For example, the terminal determines that the number of frequency domain resource units occupied by the first frequency domain resource capable of receiving the downlink transmission is 10, that is, the second number is 10. Accordingly, the terminal determines that the number of configurable frequency domain resource units in the CSI-RS resource is greater than or equal to the smallest of {24, 10}, and / or estimates that the number of configurable frequency domain resource units in the CSI-RS resource will be no less than the smallest of {24, 10}, wherein the smallest of {24, 10} is 10, and therefore the terminal determines that the number of configurable frequency domain resource units in the CSI-RS resource is greater than or equal to 10, and / or estimates that the number of configurable frequency domain resource units in the CSI-RS resource will be no less than 10.

[0053] Alternatively, the terminal determines the CSI-RS resource according to a protocol agreement or according to configuration information of the network device, and receives the CSI-RS based on the CSI-RS resource, wherein the relationship between the number of configurable resource units in the frequency domain of the CSI-RS resource and the minimum value of the first quantity and the second quantity is agreed upon by the protocol or determined by the network device, and does not necessarily require the participation of the terminal; for example, the number of configurable resource units in the frequency domain of the CSI-RS resource is greater than or equal to the smallest of {24, 10}.In this case, the terminal does not need to perform one or more of the following operations: determining the first frequency domain resource capable of receiving the downlink transmission; determining the number of frequency domain resource units occupied by the first frequency domain resource; establishing that the number of configurable frequency domain resource units for the CSI-RS is greater than or equal to the smallest of {24, 10}; and calculating that the number of configurable frequency domain resource units for the CSI-RS will be no less than the smallest of {24, 10}.

[0054] A first frequency domain resource that can be used for receiving a downlink transmission is described below using several embodiments of the present invention as an example.

[0055] In one embodiment of the present invention, the first frequency domain resource that can be used for receiving the downlink transmission includes at least one of the following: a downlink subband and a guard frequency interval.

[0056] In one embodiment of the present invention, the downlink subband includes at least one of the following: a frequency domain resource configured in a downlink slot other than an uplink subband; a frequency domain resource configured in a downlink slot other than an uplink subband and a guard frequency interval; a frequency domain resource configured in a flexible slot other than an uplink subband; a frequency domain resource configured in a flexible slot other than an uplink subband and a guard frequency interval; a downlink subband configured in an uplink slot; and a downlink subband configured in the flexible slot.

[0057] For example, a network device configures an uplink subband in a downlink slot for a terminal. Frequency domain resources from among the frequency domain resources corresponding to the downlink slot, other than the uplink subband, may be referred to as a downlink subband, and the terminal can receive a downlink transmission on the downlink subband. In this case, the first frequency domain resource that can be used to receive the downlink transmission includes frequency domain resources from among the frequency domain resources corresponding to the downlink slot, other than the uplink subband.

[0058] For example, a network device configures an uplink sub-band and a guard frequency interval in a downlink slot for a terminal. Frequency domain resources from among the frequency domain resources corresponding to the downlink slot, other than the uplink sub-band and the guard frequency interval, may be referred to as a downlink sub-band, and the terminal can receive a downlink transmission on the downlink sub-band. In this case, the first frequency domain resource that can be used to receive the downlink transmission includes frequency domain resources from among the frequency domain resources corresponding to the downlink slot, other than the uplink sub-band and the guard frequency interval.

[0059] For example, a network device configures an uplink subband in a flexible slot for a terminal. Frequency domain resources other than the uplink subband among the frequency domain resources corresponding to the flexible slot may be referred to as a downlink subband, and the terminal can receive a downlink transmission on the downlink subband. In this case, the first frequency domain resource that can be used to receive the downlink transmission includes frequency domain resources other than the uplink subband among the frequency domain resources corresponding to the flexible slot.

[0060] For example, a network device configures an uplink subband and a guard frequency interval in a flexible slot for a terminal. Frequency domain resources within the frequency domain resources corresponding to the flexible slot, other than the uplink subband and the guard frequency interval, may be referred to as a downlink subband, and the terminal can receive a downlink transmission on the downlink subband. In this case, the first frequency domain resource that can be used to receive the downlink transmission includes frequency domain resources within the frequency domain resources corresponding to the flexible slot, other than the uplink subband and the guard frequency interval.

[0061] For example, a network device configures a downlink subband in an uplink slot for a terminal. The terminal can receive a downlink transmission on the downlink subband. In this case, the first frequency domain resource that can be used to receive the downlink transmission includes the downlink subband in the uplink slot.

[0062] For example, a network device configures a downlink subband in a flexible slot for a terminal. The terminal can receive a downlink transmission on the downlink subband. In this case, the first frequency domain resource that can be used to receive the downlink transmission includes the downlink subband in the flexible slot.

[0063] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes continuous frequency domain resources capable of receiving the downlink transmission, and the channel state information reference signal resource includes continuous resource units in the frequency domain.

[0064] In other words, if the CSI-RS resource includes contiguous resource units in the frequency domain, the first frequency domain resource capable of receiving the downlink transmission may include contiguous frequency domain resources capable of receiving the downlink transmission.

[0065] In one embodiment of the present invention, if the first frequency domain resource that can be used by the terminal to receive the downlink transmission includes a downlink subband, the terminal may determine the downlink subband where the initial resource unit in the frequency domain is located as the first frequency domain resource.

[0066] For example, if only one downlink subband is in the activated BWP, the terminal may determine this downlink subband as the first frequency domain resource. According to the embodiment of the present invention, which is illustrated in Fig. 2, two downlink subbands are in the activated BWP, and these two downlink subbands are discontinuous. Therefore, if the CSI-RS resource includes continuous resource units in the frequency domain, one of these two downlink subbands may be the first frequency domain resource capable of receiving the downlink transmission.Therefore, when there are multiple contiguous frequency domain resources capable of receiving the downlink transmission, considering the fact that the CSI-RS resource can only include contiguous frequency domain resources, the CSI-RS resource can be transmitted on only one of the contiguous frequency domain resources, and the terminal needs to designate one contiguous frequency domain resource as the first frequency domain resource.

[0067] Determining one continuous frequency domain resource as a first frequency domain resource from a plurality of continuous frequency domain resources capable of receiving a downlink transmission is described below using an example of several embodiments of the present invention.

[0068] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes: a continuous frequency domain resource that is capable of receiving the downlink transmission based on an initial resource unit in the frequency domain in the channel state information reference signal resource.

[0069] The network device may send CSI-RS resource configuration information to the terminal, and the terminal may determine the CSI-RS resource based on this configuration information. For example, the configuration information includes at least one of the following information: an initial resource unit in the frequency domain of the CSI-RS resource and the number of continuous resource units in the frequency domain.

[0070] Among the plurality of continuous frequency domain resources capable of receiving the downlink transmission, the terminal may allocate a continuous frequency domain resource that is capable of receiving the downlink transmission based on an initial resource unit in the frequency domain, designating it as the first frequency domain resource.

[0071] For example, the number of frequency domain resource units by which the starting frequency domain resource unit of the CSI-RS resource is offset from the starting resource unit of the common resource block CRB#0 may be a positive integer multiple of the first value.

[0072] Fig. 4 is a diagram illustrating a first frequency domain resource according to one embodiment of the present invention.

[0073] As shown in Fig. 4, which is based on the embodiment of the present invention shown in Fig. 2, two downlink sub-bands, namely, a downlink sub-band #1 and a downlink sub-band #2, may be defined in the activated BWP. If, based on the CSI-RS resource configuration information, the terminal determines that the initial resource unit in the frequency domain of the CSI-RS resource is the downlink sub-band #1, the downlink sub-band #1 may be defined as the first frequency domain resource capable of receiving the downlink transmission.

[0074] If a frequency domain resource unit including RBs is taken as an example, as shown in Fig. 4, for example, the downlink sub-band #1 includes 12 RBs, and the downlink sub-band #2 includes 10 RBs. If the downlink sub-band #1 is used as the first frequency domain resource capable of receiving downlink transmission, based on the above analysis, the second quantity will be equal to the number of RBs contained in the downlink sub-band #1, i.e., 12 RBs.Thus, the terminal determines that the number of configurable resource units in the frequency domain for the CSI-RS exceeds or is equal to the smallest of the values ​​{24, 12}, and / or calculates that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than the smallest of the values ​​{24, 12}, wherein the smallest of the values ​​{24, 12} is 12, and therefore the terminal determines that the number of configurable resource units in the frequency domain for the CSI-RS exceeds or is equal to the smallest of the values ​​{24, 12}, and / or calculates that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than 12.

[0075] Alternatively, the terminal determines the CSI-RS resource according to a protocol agreement or according to configuration information of the network device, and receives the CSI-RS based on the CSI-RS resource, wherein the relationship between the number of configurable resource units in the frequency domain of the CSI-RS resource and the minimum value of the first quantity and the second quantity is agreed upon by the protocol or determined by the network device, and does not necessarily require the participation of the terminal; for example, the number of configurable resource units in the frequency domain of the CSI-RS resource is greater than or equal to the smallest of {24, 12}.In this case, the terminal need not perform one or more of the following operations: determining a first frequency domain resource capable of receiving the downlink transmission; determining a number of frequency domain resource units occupied by the first frequency domain resource; establishing that the number of configurable frequency domain resource units for the CSI-RS is greater than or equal to the smallest of {24, 12}; and calculating that the number of configurable frequency domain resource units for the CSI-RS will be no less than the smallest of {24, 12}.

[0076] In one embodiment of the present invention, it is provided that if the first frequency domain resource that can be used by a terminal to receive a downlink transmission includes a downlink subband and a guard frequency interval, the terminal may determine the downlink subband where the initial resource unit in the frequency domain is located and the guard frequency interval connected to the downlink subband as the first frequency domain resource.

[0077] For example, when the initial frequency domain resource unit in the CSI-RS resource is downlink subband #1 or guard frequency interval #1, the downlink subband #1 and guard frequency interval #1 connected to the downlink subband #1 can be defined as the first frequency domain resource capable of receiving downlink transmission. The second quantity is equal to the sum of the number of RBs contained in the downlink subband #1 and guard frequency interval #1, i.e., 12 + 2 = 14.Thus, the terminal determines that the number of configurable resource units in the frequency domain for the CSI-RS exceeds or is equal to the smallest of the values ​​{24, 14}, and / or calculates that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than the smallest of the values ​​{24, 14}, wherein the smallest of the values ​​{24, 14} is 14, and therefore the terminal determines that the number of configurable resource units in the frequency domain for the CSI-RS exceeds or is equal to the smallest of the values ​​{24, 14}, and / or calculates that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than 14.

[0078] Alternatively, the terminal determines the CSI-RS resource according to a protocol agreement or according to configuration information of the network device, and receives the CSI-RS based on the CSI-RS resource, wherein the relationship between the number of configurable resource units in the frequency domain of the CSI-RS resource and the minimum value of the first quantity and the second quantity is agreed upon by the protocol or determined by the network device, and does not necessarily require the participation of the terminal; for example, the number of configurable resource units in the frequency domain of the CSI-RS resource is greater than or equal to the smallest of the values ​​(24, 14}.In this case, the terminal need not perform one or more of the following operations: determining a first frequency domain resource capable of receiving the downlink transmission; determining a number of frequency domain resource units occupied by the first frequency domain resource; establishing that the number of configurable frequency domain resource units for the CSI-RS is greater than or equal to the smallest of {24, 14}; and calculating that the number of configurable frequency domain resource units for the CSI-RS will be no less than the smallest of {24, 14}.

[0079] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes: a contiguous frequency domain resource, among all the contiguous frequency domain resources capable of receiving the downlink transmission, that occupies the smallest number of resource units in the frequency domain.

[0080] When the terminal has a plurality of continuous frequency domain resources capable of receiving downlink transmission, the terminal may determine the number of resource units occupied by each continuous frequency domain resource and use the continuous frequency domain resource that occupies the smallest number of resource units in the frequency domain as the first frequency domain resource.

[0081] In one embodiment of the present invention, if the first frequency domain resource that can be used by the terminal for receiving the downlink transmission includes a downlink subband, the terminal may determine the number of resource units in the frequency domain occupied by each downlink subband and determine the downlink subband that occupies the smallest number of resource units in the frequency domain as the first frequency domain resource.

[0082] Fig. 5 is a diagram illustrating another first frequency domain resource according to one embodiment of the present invention.

[0083] As shown in Fig. 5, which is based on the embodiment of the present invention shown in Fig. 2, two downlink sub-bands, namely, a downlink sub-band #1 and a downlink sub-band #2, can be defined in the activated BWP. Based on the CSI-RS resource configuration information, the terminal determines that the initial resource unit in the frequency domain of the CSI-RS resource is the downlink sub-band #2, and therefore, the downlink sub-band #2 can be defined as the first frequency domain resource capable of receiving the downlink transmission.

[0084] If we take a frequency domain resource unit including RBs as an example, as shown in Fig. 5, for example, the downlink sub-band #1 includes 12 RBs, and the downlink sub-band #2 includes 10 RBs. Therefore, of these two downlink sub-bands, the downlink sub-band #2 occupies the smallest number of RBs. Therefore, the downlink sub-band #2 can be used as the first frequency domain resource capable of receiving downlink transmission, and therefore the second number will be 10.Thus, the terminal determines that the number of configurable resource units in the frequency domain for the CSI-RS exceeds or is equal to the smallest of the values ​​{24, 10}, and / or calculates that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than the smallest of the values ​​{24, 10}, wherein the smallest of the values ​​{24, 10} is equal to 10, and therefore the terminal determines that the number of configurable resource units in the frequency domain for the CSI-RS exceeds or is equal to the smallest of the values ​​{24, 10}, and / or calculates that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than 10.

[0085] Alternatively, the terminal determines the CSI-RS resource according to a protocol agreement or according to configuration information of the network device, and receives the CSI-RS based on the CSI-RS resource, wherein the relationship between the number of configurable resource units in the frequency domain of the CSI-RS resource and the minimum value of the first quantity and the second quantity is agreed upon by the protocol or determined by the network device, and does not necessarily require the participation of the terminal; for example, the number of configurable resource units in the frequency domain of the CSI-RS resource is greater than or equal to the smallest of {24, 10}.In this case, the terminal need not perform one or more of the following operations: determining a first frequency domain resource capable of receiving the downlink transmission; determining a number of frequency domain resource units occupied by the first frequency domain resource; establishing that the number of configurable frequency domain resource units for the CSI-RS is greater than or equal to the smallest of {24, 10}; and calculating that the number of configurable frequency domain resource units for the CSI-RS will be no less than the smallest of {24, 10}.

[0086] In one embodiment of the present invention, it is provided that if the first frequency domain resource that can be used by a terminal to receive a downlink transmission includes a downlink subband and a guard frequency interval, the terminal may determine a downlink subband that occupies the smallest number of resource units in the frequency domain and a guard frequency interval connected to this downlink subband as the first frequency domain resource.

[0087] For example, of the number of frequency domain units occupied by the downlink sub-band #1 and the guard frequency interval #1 connected to the downlink sub-band #1, and the frequency domain units occupied by the downlink sub-band #2 and the guard frequency interval #2 connected to the downlink sub-band #2, the number of frequency domain units occupied by the downlink sub-band #2 and the guard frequency interval #2 connected to the downlink sub-band #2 will be the smallest. Downlink subband #2 and guard frequency interval #2 connected to downlink subband #2 can be defined as the first frequency domain resource capable of receiving downlink transmission. The second quantity is equal to the sum of the number of RBs contained in downlink subband #2 and guard frequency interval #2, i.e., 10 + 2 = 12.Thus, the terminal determines that the number of configurable resource units in the frequency domain for the CSI-RS exceeds or is equal to the smallest of the values ​​{24, 12}, and / or calculates that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than the smallest of the values ​​{24, 12}, wherein the smallest of the values ​​{24, 12} is 12, and therefore the terminal determines that the number of configurable resource units in the frequency domain for the CSI-RS exceeds or is equal to the smallest of the values ​​{24, 12}, and / or calculates that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than 12.

[0088] Alternatively, the terminal determines the CSI-RS resource according to a protocol agreement or according to configuration information of the network device, and receives the CSI-RS based on the CSI-RS resource, wherein the relationship between the number of configurable resource units in the frequency domain of the CSI-RS resource and the minimum value of the first quantity and the second quantity is agreed upon by the protocol or determined by the network device, and does not necessarily require the participation of the terminal; for example, the number of configurable resource units in the frequency domain of the CSI-RS resource is greater than or equal to the smallest of {24, 12}.In this case, the terminal need not perform one or more of the following operations: determining a first frequency domain resource capable of receiving the downlink transmission; determining a number of frequency domain resource units occupied by the first frequency domain resource; establishing that the number of configurable frequency domain resource units for the CSI-RS is greater than or equal to the smallest of {24, 12}; and calculating that the number of configurable frequency domain resource units for the CSI-RS will be no less than the smallest of {24, 12}.

[0089] It should be noted that determining one continuous frequency domain resource as the first frequency domain resource from among the plurality of continuous frequency domain resources capable of receiving the downlink transmission is not limited to the method described in the embodiments of the present invention disclosed above. For example, the first frequency domain resource capable of receiving the downlink transmission includes: a continuous frequency domain resource from among all the continuous frequency domain resources capable of receiving the downlink transmission that occupies the largest number of frequency domain units;for example, the first frequency domain resource capable of receiving the downlink transmission includes: a contiguous frequency domain resource, from among all the contiguous frequency domain resources capable of receiving the downlink transmission, that is designated by the network device (for example, the network device may designate an identifier of the frequency domain resource, a frequency domain range, etc.); for example, the first frequency domain resource capable of receiving the downlink transmission includes: a contiguous frequency domain resource, from among all the contiguous frequency domain resources capable of receiving the downlink transmission, occupying a number of frequency domain units that is an integer multiple of the first value (for example, 4). If there are multiple such resources, other conditions (such as an identifier and a starting resource unit in the frequency domain) may be combined for determination;For example, a contiguous frequency domain resource corresponding to the smallest identifier that satisfies the above condition may be determined as the first frequency domain resource capable of receiving the downlink transmission; for example, the first frequency domain resource capable of receiving the downlink transmission includes: a contiguous frequency domain resource, among all the contiguous frequency domain resources capable of receiving the downlink transmission, whose identifier is a predetermined identifier (for example, the smallest or the largest identifier).;

[0090] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes a discontinuous frequency domain resource capable of receiving the downlink transmission, and the channel state information reference signal resource may include discontinuous resource units in the frequency domain.

[0091] In other words, in cases where the CSI-RS resource may include discontinuous resource units in the frequency domain, the first frequency domain resource capable of receiving the downlink transmission may include a discontinuous frequency domain resource capable of receiving the downlink transmission. It should be noted that this does not mean that the first frequency domain resource cannot include a continuous frequency domain resource capable of receiving the downlink transmission, but rather that the first frequency domain resource may include both a continuous frequency domain resource capable of receiving the downlink transmission and a discontinuous frequency domain resource capable of receiving the downlink transmission.

[0092] In one embodiment of the present invention, if a first frequency domain resource that can be used by a terminal to receive a downlink transmission includes a downlink subband, the terminal may determine the number of resource units in the frequency domain occupied by all of the downlink subbands as the first frequency domain resource.

[0093] For example, if only one downlink subband is in the activated BWP, the terminal may determine this downlink subband as the first frequency domain resource. According to the embodiment of the present invention, which is illustrated in Fig. 2, two downlink subbands are in the activated BWP, and these two downlink subbands are discontinuous. Therefore, if the CSI-RS resource includes discontinuous resource units in the frequency domain, these two downlink subbands may serve as the first frequency domain resource capable of receiving the downlink transmission.

[0094] Taking Fig. 5 as an example, based on the embodiment of the present invention shown in Fig. 2, a terminal may determine two downlink subbands, namely, a downlink subband #1 and a downlink subband #2. The terminal may determine the downlink subband #1 and the downlink subband #2 as the first frequency domain resource capable of receiving downlink transmission.

[0095] If we take a frequency domain resource unit including RBs as an example, as shown in Fig. 5, for example, the downlink sub-band #1 includes 12 RBs, and the downlink sub-band #2 includes 10 RBs. The total number of RBs contained in the two downlink sub-bands is 22.Thus, the terminal determines that the number of configurable resource units in the frequency domain for the CSI-RS exceeds or is equal to the smallest of the values ​​{24, 22}, and / or calculates that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than the smallest of the values ​​{24, 22}, wherein the smallest of the values ​​{24, 22} is 22, and therefore the terminal determines that the number of configurable resource units in the frequency domain for the CSI-RS exceeds or is equal to the smallest of the values ​​{24, 22}, and / or calculates that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than 22.

[0096] Alternatively, the terminal determines the CSI-RS resource according to a protocol agreement or according to configuration information of the network device, and receives the CSI-RS based on the CSI-RS resource, wherein the relationship between the number of configurable resource units in the frequency domain of the CSI-RS resource and the minimum value of the first quantity and the second quantity is agreed upon by the protocol or determined by the network device, and does not necessarily require the participation of the terminal; for example, the number of configurable resource units in the frequency domain of the CSI-RS resource is greater than or equal to the smallest of {24, 22}.In this case, the terminal need not perform one or more of the following operations: determining a first frequency domain resource capable of receiving the downlink transmission; determining a number of frequency domain resource units occupied by the first frequency domain resource; establishing that the number of configurable frequency domain resource units for the CSI-RS is greater than or equal to the smallest of {24, 22}; and calculating that the number of configurable frequency domain resource units for the CSI-RS will be no less than the smallest of {24, 22}.

[0097] In one embodiment of the present invention, it is provided that if the first frequency domain resource that can be used by the terminal to receive the downlink transmission includes a downlink subband and a guard frequency interval, the terminal may determine a discontinuous frequency domain resource capable of receiving the downlink transmission, which includes the downlink subband and the guard frequency interval, as the first frequency domain resource.

[0098] For example, the discontinuous frequency domain resource includes a downlink sub-band #1, a downlink sub-band #2, a guard frequency interval #1, and a guard frequency interval #2. The downlink sub-band #1 and the guard frequency interval #1 connected to the downlink sub-band #1, and the downlink sub-band #2 and the guard frequency interval #2 connected to the downlink sub-band #2 can be determined as the first frequency domain resource capable of receiving downlink transmission. The second quantity is equal to the sum of the number of RBs contained in downlink subband #1, downlink subband #2, guard frequency interval #1, and guard frequency interval #2, i.e. 12+2+10+2=26.Thus, the terminal establishes that the number of configurable resource units in the frequency domain for the CS1-RS exceeds or is equal to the smallest of the values ​​{24, 26}, and / or calculates that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than the smallest of the values ​​{24, 26}, wherein the smallest of the values ​​{24, 26} is 24, and therefore the terminal establishes that the number of configurable resource units in the frequency domain for the CSI-RS exceeds or is equal to the smallest of the values ​​{24, 26}, and / or calculates that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than 24.

[0099] Alternatively, the terminal determines the CSI-RS resource according to a protocol agreement or according to configuration information of the network device, and receives the CSI-RS based on the CSI-RS resource, wherein the relationship between the number of configurable resource units in the frequency domain of the CSI-RS resource and the minimum value of the first quantity and the second quantity is agreed upon by the protocol or determined by the network device, and does not necessarily require the participation of the terminal; for example, the number of configurable resource units in the frequency domain of the CSI-RS resource is greater than or equal to the smallest of {24, 26}.In this case, the terminal need not perform one or more of the following operations: determining a first frequency domain resource capable of receiving the downlink transmission; determining a number of frequency domain resource units occupied by the first frequency domain resource; establishing that the number of configurable frequency domain resource units for the CSI-RS is greater than or equal to the smallest of {24, 26}; and calculating that the number of configurable frequency domain resource units for the CSI-RS will be no less than the smallest of {24, 26}.

[0100] In one embodiment of the present invention, the second quantity is an integer multiple of the first value; wherein the number of configurable resource units in the frequency domain in the channel state information reference signal resource is greater than or equal to the second quantity.

[0101] In one embodiment of the present invention, it is provided that although the terminal does not assume that the number of configurable resource units in the frequency domain of the CSI-RS resource is less than the minimum value of the first quantity and the second quantity, and / or the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device is not less than the minimum value of the first quantity and the second quantity, the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device may be greater than or equal to the second quantity.

[0102] When the number of frequency domain resource units in the CSI-RS resource configured for the terminal by the network device exceeds the second number, in order to ensure that the CSI-RS resource actually used for transmitting the CSI-RS does not exceed the frequency domain range in which the terminal can receive the CSI-RS, the terminal may set the number of frequency domain resource units in the CSI-RS resource to be equal to the second number, that is, the number of frequency domain resource units contained in the CSI-RS resource actually used for transmitting the CSI-RS to be equal to the second number.

[0103] Since the number of frequency domain resource units occupied by the CSI-RS resource must be a positive integer multiple of the first value, taking the frequency domain resource unit being the RB block and the first value being 4 as an example, the number of RB blocks occupied by the CSI-RS resource must be 4n, where n is a positive integer. Therefore, the terminal may determine that the second quantity is an integer multiple of the first value, and / or the terminal may assume that the second quantity is not a number other than an integer multiple of the first value.Thus, the second quantity is an integer multiple of the first value, for example, 4n, thereby ensuring that the number of frequency domain resource units contained in the CSI-RS resource actually used to transmit the CSI-RS is a positive integer multiple of the first value, and the CSI-RS resource actually used to transmit the CSI-RS does not exceed the frequency domain range in which the terminal can receive the CSI-RS.

[0104] For example, the second quantity is 8, which is 2x4. The number of frequency domain resource units contained in the CSI-RS resource configured for the terminal by the network device is 12, which is greater than 8. In this case, the terminal can determine that the number of frequency domain resource units contained in the CSI-RS resource actually used for CSI-RS transmission is 8.

[0105] Fig. 6 is a flowchart illustrating another resource determination method according to one embodiment of the present invention. The resource determination method according to this embodiment of the present invention can be implemented by a terminal. As shown in Fig. 6, this resource determination method further includes performing the step described below.

[0106] Stage S601: determining the number of frequency domain resource units contained in the channel state information reference signal resource to be the maximum value (among integer multiples of the first value) that is less than or equal to the second number; wherein the number of configurable frequency domain resource units contained in the channel state information reference signal resource is greater than or equal to the second number.

[0107] In one embodiment of the present invention, it is provided that although the terminal does not assume that the number of configurable resource units in the frequency domain of the CSI-RS resource is less than the minimum value of the first quantity and the second quantity, and / or the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device is not less than the minimum value of the first quantity and the second quantity, the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device may be greater than or equal to the second quantity.

[0108] When the number of frequency domain resource units in the CSI-RS resource configured for the terminal by the network device exceeds a second number, the terminal may determine the number of frequency domain resource units in the CSI-RS resource to be a maximum value (among integer multiples of the first value) that is less than or equal to the second number; that is, the number of frequency domain resource units contained in the CSI-RS resource that is actually used for transmitting the CSI-RS is a maximum value (among integer multiples of the first value) that is less than or equal to the second number.

[0109] Since the number of frequency domain resource units occupied by the CSI-RS resource must be a positive integer multiple of the first value, if we take the frequency domain resource unit that is the RB block and the first value is 4 as an example, the number of RB blocks occupied by the CSI-RS resource must be 4n, where n is a positive integer.If the second quantity has a value other than an integer multiple of the first value, the terminal may set the number of frequency domain resource units contained in the CSI-RS resource as a maximum value (among integer multiples of the first value) that is less than or equal to the second quantity, thereby ensuring that the number of frequency domain resource units contained in the CSI-RS resource that is actually used to transmit the CSI-RS is a positive integer multiple of the first value, and the CSI-RS resource that is actually used to transmit the CSI-RS does not exceed the frequency domain range in which the terminal can receive the CSI-RS.

[0110] When the number of resource units in the frequency domain in the CSI-RS resource configured for the terminal by the network device exceeds a second quantity, and the second quantity is an integer multiple of the first value, the terminal may determine that the number of RBs occupied by the CSI-RS resource is equal to the second quantity.

[0111] When the number of resource units in the frequency domain in the CSI-RS resource configured for the terminal by the network device exceeds a second quantity, and the second quantity is not an integer multiple of the first value, the terminal may determine values ​​equal to an integer multiple of the first value from among values ​​that are less than the second quantity; select a maximum value (for example, 4) from the values ​​equal to an integer multiple of the first value; and then determine that the number of RBs occupied by the CSI-RS resource is equal to this maximum value.

[0112] For example, the second quantity may be 8, and this number is a positive integer multiple of 4. The number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device is 12, which is greater than 8. In this case, the terminal can determine that the number of resource units in the frequency domain of the CSI-RS resource is 8.

[0113] For example, the second quantity may be 10, and this number is not a positive integer multiple of 4. The number of resource units in the frequency domain in the CSI-RS resource configured for the terminal by the network device is 12, which is greater than 10. In this case, the terminal can determine values ​​equal to 4n from among the values ​​less than 10, which are 4 and 8; select the maximum value, which is 8, from among the values ​​4 and 8; and then determine that the number of RBs occupied by the CSI-RS resource is 8.

[0114] Fig. 7 is a flowchart illustrating another resource determination method according to one embodiment of the present invention. The resource determination method according to this embodiment of the present invention can be implemented by a terminal. As shown in Fig. 7, this resource determination method further includes performing the step described below.

[0115] Stage S701: determining that the number of resource units in the frequency domain of the channel state information reference signal resource is equal to the second number, when the number of resource units in the frequency domain of the channel state information reference signal resource exceeds the second number.

[0116] In one embodiment of the present invention, it is provided that although the terminal does not assume that the number of configurable resource units in the frequency domain in the CS1-RS resource is less than the minimum value of the first quantity and the second quantity, and / or the number of resource units in the frequency domain in the CSI-RS resource configured for the terminal by the network device is not less than the minimum value of the first quantity and the second quantity, the number of resource units in the frequency domain in the CSI-RS resource configured for the terminal by the network device may be greater than or equal to the second quantity.

[0117] When the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device exceeds a second number, the terminal may determine that the number of resource units in the frequency domain of the CSI-RS resource is equal to the second number, thereby ensuring that the CSI-RS can be transmitted by the network device and received by the terminal in the range of the first frequency domain resource capable of receiving the downlink transmission, in order to prevent the network device from sending a CSI-RS signal outside the range of the first frequency domain resource capable of ensuring that the terminal receives the downlink transmission that the terminal cannot receive.

[0118] In one embodiment of the present invention, it is provided that from a number of values ​​that are less than or equal to the second number, the terminal can determine values ​​that are equal to an integer multiple of the first value; and from a number of values ​​that are equal to an integer multiple of the first value, select a maximum value (for example, 4). After this, the terminal can determine that the number of configurable resource units in the frequency domain for the CSI-RS is greater than or equal to the minimum value of the first number and this maximum value, and / or assume that the number of configurable resource units in the frequency domain for the CSI-RS will be not less than the minimum value of the first number and this maximum value.

[0119] For example, the first value is 4, the first quantity is 24, and the second quantity is 10. Among the values ​​that are less than or equal to the second quantity, the terminal may select values ​​that are an integer multiple of the first value, such as 8 and 4, with 8 being the maximum value. Therefore, the terminal may determine that the number of configurable resource units in the frequency domain for the CSI-RS is greater than or equal to the smallest of {24, 8}, and / or assume that the number of configurable resource units in the frequency domain within the CSI-RS resource will be no less than the smallest of {24, 8}=8.

[0120] In one embodiment of the present invention, the second quantity is greater than or equal to the first quantity, and the quantity of configurable resource units in the frequency domain within the CSI-RS resource is greater than or equal to a minimum value of the first quantity and a third quantity, wherein the third quantity is a quantity of resource units in the frequency domain occupied by the BWP in which the first private domain resource capable of receiving the downlink transmission is located; and / or the terminal does not assume that the second quantity is less than the first quantity, and also does not assume that the quantity of configurable resource units in the frequency domain within the CSI-RS resource is less than a minimum value of the first quantity and the third quantity.When the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device exceeds the third number, the terminal may determine that the number of resource units in the frequency domain of the CSI-RS resource is equal to the second number.

[0121] For example, the minimum value of the number of configurable resource units in the frequency domain of the CSI-RS resource is the smallest of {the first quantity, the third quantity}, and the number of RBs occupied by the first frequency domain resource that can support the reception of the downlink transmission by the terminal is the second quantity. Since the third quantity is greater than or equal to the second quantity, under the condition that the second quantity is greater than or equal to the first quantity, it can be determined that the third quantity is greater than or equal to the first quantity, and therefore the minimum value of the number of configurable resource units in the frequency domain of the CSI-RS resource can be the first quantity; in this case, the third quantity is greater than or equal to the number of configurable resource units in the frequency domain of the CSI-RS resource.Therefore, it is possible to ensure compliance with the condition that the minimum value of the number of configurable resource units in the frequency domain within the CSI-RS resource is the smallest of the {first quantity, third quantity}, and the minimum value (first quantity) of the number of configurable resource units in the frequency domain within the CSI-RS resource lies within the range of the number of resource units in the frequency domain (second quantity) occupied by the first frequency domain resource capable of ensuring the reception of the downlink transmission by the terminal. Accordingly, the network side can configure the corresponding CSI-RS resource based on satisfying the said conditions so that the frequency domain resource units configured for the CSI-RS resource lie within the range of the first frequency domain resource, ensuring the possibility of receiving the CSI-RS signal by the terminal within the frequency domain range available for reception.

[0122] In one embodiment of the present invention, the number of configurable resource units in the frequency domain of the CSI-RS resource is greater than or equal to the minimum value of the first quantity and the third quantity, wherein the third quantity is the number of resource units in the frequency domain occupied by the BWP in which the first frequency domain resource capable of receiving the downlink transmission is located and / or the number of resource units in the frequency domain occupied by the downlink BWP where the terminal is located. Alternatively, the terminal does not assume that the number of configurable resource units in the frequency domain of the CSI-RS resource is less than the minimum value of the first quantity and the third quantity.When the number of frequency domain resource units in the CSI-RS resource configured for the terminal by the network device exceeds a second number, the terminal may determine that the number of frequency domain resource units in the CSI-RS resource equals the second number. The second number is determined based on the embodiments of the present invention disclosed above, and the description of which is not repeated hereinafter.

[0123] Fig. 8 is a flow chart illustrating a resource determination method according to one embodiment of the present invention. The resource determination method according to this embodiment of the present invention can be implemented by a network device. The network device can communicate with a terminal. The network device can be, among other things, base stations in various communication systems, such as 4G base stations, 5G base stations, 6G base stations, etc. The terminal can be, among other things, mobile phones, tablets, wearable devices, sensors, Internet of Things devices, and other communication devices.

[0124] As shown in Fig. 8, this method of determining a resource may include performing the step described below.

[0125] Stage S801: determining, based on the minimum value of the first quantity and the second quantity, the minimum value of the number of resource units in the frequency domain of the channel state information reference signal resource configured for the terminal, wherein the second quantity is the number of resource units in the frequency domain occupied by the first frequency domain resource capable of ensuring reception of the downlink transmission by the terminal.

[0126] In one embodiment of the present invention, it is provided that when configuring a CSI-RS resource for a terminal, a network device may first determine a first frequency domain resource available for receiving a downlink transmission by the terminal and a second number of frequency domain resource units occupied by the first frequency domain resource. Then, based on the minimum value of the first number and the second number, a minimum value of the number of frequency domain resource units in the resource configured for the terminal is determined. Thus, the number of frequency domain resource units in the CSI-RS resource configured for the terminal by the network device will be no less than (i.e., greater than or equal to) the minimum value of the first number and the second number.Accordingly, this will provide a positive effect in ensuring consistent perception of the CSI-RS resource by the network device and the terminal, which will guarantee high quality of subsequent data transmission between the network device and the terminal.

[0127] Accordingly, the terminal may determine a first frequency domain resource capable of receiving the downlink transmission and determine the number of frequency domain resource units occupied by the first frequency domain resource, which is referred to as, for example, the second quantity. Alternatively, the terminal may not assume that the number of configurable frequency domain resource units in the CSI-RS resource will be less than the minimum value of the first quantity and the second quantity.

[0128] In one embodiment of the present invention, the first quantity is determined based on a predetermined rule, or the first quantity is configured by the network device. For example, in cases where the resource unit in the frequency domain is an RB block, the first quantity may be equal to 24.

[0129] For example, the terminal sets that the number of frequency domain resource units occupied by the first frequency domain resource capable of supporting the reception of the downlink transmission by the terminal is 10, that is, the second number is 10. Therefore, the minimum value of the number of frequency domain resource units in the CSI-RS resource configured for the terminal by the network device is the smallest value of {24, 10}, where the smallest value of {24, 10} is 10, and therefore the minimum value of the number of frequency domain resource units in the CSI-RS resource configured for the terminal is 10.

[0130] In one embodiment of the present invention, a first frequency domain resource that can be used to receive a downlink transmission includes at least one of the following: a downlink subband and a guard frequency interval.

[0131] In one embodiment of the present invention, the downlink subband includes at least one of the following: a frequency domain resource configured in a downlink slot other than an uplink subband; a frequency domain resource configured in a downlink slot other than an uplink subband and a guard frequency interval; a frequency domain resource configured in a flexible slot other than an uplink subband; a frequency domain resource configured in a flexible slot other than an uplink subband and a guard frequency interval; a downlink subband configured in an uplink slot; and a downlink subband configured in the flexible slot.

[0132] For example, a network device configures an uplink subband in a downlink slot for a terminal. Frequency domain resources from among the frequency domain resources corresponding to the downlink slot, other than the uplink subband, may be referred to as a downlink subband, and the terminal can receive a downlink transmission on the downlink subband. In this case, the first frequency domain resource that can be used to receive the downlink transmission includes frequency domain resources from among the frequency domain resources corresponding to the downlink slot, other than the uplink subband.

[0133] For example, a network device configures an uplink sub-band and a guard frequency interval in a downlink slot for a terminal. Frequency domain resources from among the frequency domain resources corresponding to the downlink slot, other than the uplink sub-band and the guard frequency interval, may be referred to as a downlink sub-band, and the terminal can receive a downlink transmission on the downlink sub-band. In this case, the first frequency domain resource that can be used to receive the downlink transmission includes frequency domain resources from among the frequency domain resources corresponding to the downlink slot, other than the uplink sub-band and the guard frequency interval.

[0134] For example, a network device configures an uplink subband in a flexible slot for a terminal. Frequency domain resources other than the uplink subband among the frequency domain resources corresponding to the flexible slot may be referred to as a downlink subband, and the terminal can receive a downlink transmission on the downlink subband. In this case, the first frequency domain resource that can be used to receive the downlink transmission includes frequency domain resources other than the uplink subband among the frequency domain resources corresponding to the flexible slot.

[0135] For example, a network device configures an uplink subband and a guard frequency interval in a flexible slot for a terminal. Frequency domain resources within the frequency domain resources corresponding to the flexible slot, other than the uplink subband and the guard frequency interval, may be referred to as a downlink subband, and the terminal can receive a downlink transmission on the downlink subband. In this case, the first frequency domain resource that can be used to receive the downlink transmission includes frequency domain resources within the frequency domain resources corresponding to the flexible slot, other than the uplink subband and the guard frequency interval.

[0136] For example, a network device configures a downlink subband in an uplink slot for a terminal. The terminal can receive a downlink transmission on the downlink subband. In this case, the first frequency domain resource that can be used to receive the downlink transmission includes the downlink subband in the uplink slot.

[0137] For example, a network device configures a downlink subband in a flexible slot for a terminal. The terminal can receive a downlink transmission on the downlink subband. In this case, the first frequency domain resource that can be used to receive the downlink transmission includes the downlink subband in the flexible slot.

[0138] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes continuous frequency domain resources capable of receiving the downlink transmission, and the channel state information reference signal resource includes continuous resource units in the frequency domain.

[0139] In other words, if the CSI-RS resource includes contiguous resource units in the frequency domain, the first frequency domain resource capable of receiving the downlink transmission may include contiguous frequency domain resources capable of receiving the downlink transmission.

[0140] In one embodiment of the present invention, it is provided that if the first frequency domain resource that can be used by the terminal for receiving the downlink transmission includes a downlink subband, then the network device may determine the downlink subband where the initial resource unit in the frequency domain is located as the first frequency domain resource.

[0141] For example, if only one downlink subband is in the activated BWP, the network device may determine this downlink subband as the first frequency domain resource. According to the embodiment of the present invention, which is illustrated in Fig. 2, two downlink subbands are in the activated BWP, and these two downlink subbands are discontinuous. Therefore, if the CSI-RS resource includes continuous resource units in the frequency domain, one of these two downlink subbands may be the first frequency domain resource capable of receiving the downlink transmission.Therefore, when there are multiple contiguous frequency domain resources capable of receiving downlink transmission, considering the fact that a CSI-RS resource can only include contiguous frequency domain resources, the CSI-RS resource can be transmitted on only one of the contiguous frequency domain resources, and the network device needs to designate one contiguous frequency domain resource as the first frequency domain resource.

[0142] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes a continuous frequency domain resource that is capable of receiving the downlink transmission based on an initial resource unit in the frequency domain in the channel state information reference signal resource.

[0143] The network device may send CSI-RS resource configuration information to the terminal, and the terminal may determine the CSI-RS resource based on this configuration information. For example, the configuration information includes at least one of the following information: an initial resource unit in the frequency domain of the CSI-RS resource and the number of continuous resource units in the frequency domain.

[0144] A network device may allocate a continuous frequency domain resource that is capable of receiving the downlink transmission based on an initial resource unit in the frequency domain from a plurality of continuous frequency domain resources capable of supporting the terminal to receive the downlink transmission, and designate it as a first frequency domain resource.

[0145] For example, the number of frequency domain resource units by which the starting frequency domain resource unit of the CSI-RS resource is offset from the starting resource unit of the common resource block CRB#0 may be a positive integer multiple of the first value.

[0146] As shown in Fig. 4, two downlink sub-bands, namely, downlink sub-band #1 and downlink sub-band #2, can be defined in the activated BWP. Based on the CSI-RS resource configuration information transmitted to the terminal, the network device determines that the starting resource unit in the frequency domain of the CSI-RS resource is downlink sub-band #1, and therefore, downlink sub-band #1 can be defined as the first frequency domain resource capable of receiving downlink transmission.

[0147] If a frequency domain resource unit including RBs is taken as an example, as shown in Fig. 4, for example, the downlink sub-band #1 includes 12 RBs, and the downlink sub-band #2 includes 10 RBs. If the downlink sub-band #1 is used as the first frequency domain resource capable of receiving downlink transmission, based on the above analysis, the second quantity will be 12, which is equal to the number of RBs contained in the downlink sub-band #1, that is, 12 RBs.The network device may then determine that the minimum value of the number of frequency domain resource units in the CSI-RS resource configured for the terminal is equal to the smallest of {24, 12}, wherein the smallest of {24, 12} is 12, and therefore the minimum value of the number of frequency domain resource units in the CSI-RS resource configured for the terminal will be equal to 12.

[0148] In one embodiment of the present invention, it is provided that if the first frequency domain resource that can be used by the terminal for receiving the downlink transmission includes a downlink subband and a guard frequency interval, then the network device can determine the downlink subband where the initial resource unit in the frequency domain is located and the guard frequency interval connected to this downlink subband as the first frequency domain resource.

[0149] For example, when the initial frequency domain resource unit in the CSI-RS resource is downlink subband #1 or guard frequency interval #1, the downlink subband #1 and guard frequency interval #1 connected to the downlink subband #1 can be defined as the first frequency domain resource capable of receiving downlink transmission. The second quantity is equal to the sum of the number of RBs contained in the downlink subband #1 and guard frequency interval #1, i.e., 12 + 2 = 14.Thus, the network device may determine that the minimum value of the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal is equal to the smallest of the values ​​{24, 14}, wherein the smallest of the values ​​{24, 14} is 14, and therefore the minimum value of the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal will be equal to 14.

[0150] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes: a contiguous frequency domain resource, among all the contiguous frequency domain resources capable of receiving the downlink transmission, that occupies the smallest number of resource units in the frequency domain.

[0151] When the terminal has a plurality of continuous frequency domain resources capable of receiving downlink transmission, the network device may determine the number of resource units occupied by each continuous frequency domain resource and use the continuous frequency domain resource that occupies the smallest number of resource units in the frequency domain as the first frequency domain resource.

[0152] In one embodiment of the present invention, if the first frequency domain resource that can be used by the terminal for receiving the downlink transmission includes a downlink sub-band, the network device may determine the number of resource units in the frequency domain occupied by each downlink sub-band and determine the downlink sub-band that occupies the smallest number of resource units in the frequency domain as the first frequency domain resource.

[0153] As shown in Fig. 5, two downlink sub-bands, namely, downlink sub-band #1 and downlink sub-band #2, can be defined in the activated BWP. Based on the CSI-RS resource configuration information transmitted to the terminal, the network device determines that the starting resource unit in the frequency domain of the CSI-RS resource is downlink sub-band #2, and therefore, downlink sub-band #2 can be defined as the first frequency domain resource capable of receiving downlink transmission.

[0154] If we take a frequency domain resource unit including RBs as an example, as shown in Fig. 5, for example, the downlink sub-band #1 includes 12 RBs, and the downlink sub-band #2 includes 10 RBs. Therefore, of these two downlink sub-bands, the downlink sub-band #2 occupies the smallest number of RBs. Therefore, the downlink sub-band #2 can be used as the first frequency domain resource capable of receiving downlink transmission, and therefore the second number will be 10.Thus, the network device may determine that the minimum value of the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal is equal to the smallest of the values ​​{24, 10}, wherein the smallest of the values ​​{24, 10} is 10, and therefore the minimum value of the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal will be equal to 10.

[0155] In one embodiment of the present invention, it is provided that if the first frequency domain resource that can be used by the terminal for receiving the downlink transmission includes a downlink subband and a guard frequency interval, then the network device may determine the downlink subband that occupies the smallest number of resource units in the frequency domain and the guard frequency interval connected to this downlink subband as the first frequency domain resource.

[0156] For example, of the number of frequency domain units occupied by the downlink sub-band #1 and the guard frequency interval #1 connected to the downlink sub-band #1, and the number of frequency domain units occupied by the downlink sub-band #2 and the guard frequency interval #2 connected to the downlink sub-band #2, the number of frequency domain units occupied by the downlink sub-band #2 and the guard frequency interval #2 connected to the downlink sub-band #2 will be the smallest. Downlink subband #2 and guard frequency interval #2 connected to downlink subband #2 can be defined as the first frequency domain resource capable of receiving downlink transmission. The second quantity is equal to the sum of the number of RBs contained in downlink subband #2 and guard frequency interval #2, i.e., 10 + 2 = 12.Thus, the network device may determine that the minimum value of the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal is equal to the smallest of the values ​​{24, 12}, wherein the smallest of the values ​​{24, 12} is 12, and therefore the minimum value of the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal will be equal to 12.

[0157] It should be noted that determining one continuous frequency domain resource as the first frequency domain resource from among the plurality of continuous frequency domain resources capable of receiving the downlink transmission is not limited to the method described in the embodiments of the present invention disclosed above. For example, the first frequency domain resource capable of receiving the downlink transmission includes: a continuous frequency domain resource from among all the continuous frequency domain resources capable of receiving the downlink transmission that occupies the largest number of frequency domain units;for example, the first frequency domain resource capable of receiving the downlink transmission includes: a contiguous frequency domain resource, from among all the contiguous frequency domain resources capable of receiving the downlink transmission, that is designated by the network device (for example, the network device may designate an identifier of the frequency domain resource, a frequency domain range, etc.); for example, the first frequency domain resource capable of receiving the downlink transmission includes: a contiguous frequency domain resource, from among all the contiguous frequency domain resources capable of receiving the downlink transmission, occupying a number of frequency domain units that is an integer multiple of the first value (for example, 4). If there are multiple such resources, other conditions (such as an identifier and a starting resource unit in the frequency domain) may be combined for determination;For example, a contiguous frequency domain resource corresponding to the smallest identifier that satisfies the above condition may be determined as the first frequency domain resource capable of receiving the downlink transmission; for example, the first frequency domain resource capable of receiving the downlink transmission includes: a contiguous frequency domain resource, among all the contiguous frequency domain resources capable of receiving the downlink transmission, whose identifier is a predetermined identifier (for example, the smallest or the largest identifier).;

[0158] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes a discontinuous frequency domain resource capable of receiving the downlink transmission, and the channel state information reference signal resource may include discontinuous resource units in the frequency domain.

[0159] In other words, in cases where the CSI-RS resource may include discontinuous resource units in the frequency domain, the first frequency domain resource capable of receiving the downlink transmission may include a discontinuous frequency domain resource capable of receiving the downlink transmission. It should be noted that this does not mean that the first frequency domain resource cannot include a continuous frequency domain resource capable of receiving the downlink transmission, but rather that the first frequency domain resource may include both a continuous frequency domain resource capable of receiving the downlink transmission and a discontinuous frequency domain resource capable of receiving the downlink transmission.

[0160] In one embodiment of the present invention, if the first frequency domain resource that can be used by the terminal for receiving the downlink transmission includes a downlink sub-band, the network device may determine the number of resource units in the frequency domain occupied by all the downlink sub-bands as the first frequency domain resource.

[0161] For example, if only one downlink subband is in the activated BWP, the network device can determine this downlink subband as the first frequency domain resource. According to the embodiment of the present invention, which is illustrated in Fig. 2, two downlink subbands are in the activated BWP, and these two downlink subbands are discontinuous. Therefore, if the CSI-RS resource includes discontinuous resource units in the frequency domain, these two downlink subbands can serve as the first frequency domain resource capable of receiving downlink transmission.

[0162] Taking Fig. 5 as an example, the terminal may determine two downlink sub-bands, namely, downlink sub-band #1 and downlink sub-band #2. The terminal may determine downlink sub-band #1 and downlink sub-band #2 as the first frequency domain resource capable of receiving downlink transmission.

[0163] Taking a resource unit in the frequency domain including RB blocks as shown in Fig. 5, for example, as an example, the downlink sub-band #1 includes 12 RB blocks, and the downlink sub-band #2 includes 10 RB blocks. The total number of RBs contained in the two downlink sub-bands is 22, and therefore the second number is 22. Thus, the network device can determine that the minimum value of the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal is equal to the smallest of {24, 22}, wherein the smallest of {24, 22} is 22, and therefore the minimum value of the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal will be equal to 22.

[0164] In one embodiment of the present invention, it is provided that if the first frequency domain resource that can be used by the terminal to receive the downlink transmission includes a downlink subband and a guard frequency interval, then the network device may determine a discontinuous frequency domain resource capable of receiving the downlink transmission and including the downlink subband and the guard frequency band as the first frequency domain resource.

[0165] For example, the discontinuous frequency domain resource includes a downlink sub-band #1, a downlink sub-band #2, a guard frequency interval #1, and a guard frequency interval #2. The downlink sub-band #1 and the guard frequency interval #1 connected to the downlink sub-band #1, and the downlink sub-band #2 and the guard frequency interval #2 connected to the downlink sub-band #2 can be determined as the first frequency domain resource capable of receiving downlink transmission. The second quantity is equal to the sum of the number of RBs contained in downlink subband #1, downlink subband #2, guard frequency interval #1, and guard frequency interval #2, i.e. 12+2+10+2=26.Thus, the network device may determine that the minimum value of the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal is equal to the smallest of the values ​​{24, 26}, wherein the smallest of the values ​​{24, 26} is equal to 24, and therefore the minimum value of the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal will be equal to 24.

[0166] In one embodiment of the present invention, the method for determining the resource further comprises: determining that the second quantity is an integer multiple of the first value; wherein the number of configurable resource units in the frequency domain in the channel state information reference signal resource is greater than or equal to the second quantity.

[0167] In one embodiment of the present invention, it is provided that although the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device is not less than the minimum value of the first number and the second number, the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device may be greater than or equal to the second number.

[0168] When the number of frequency domain resource units in the CSI-RS resource configured for the terminal by the network device exceeds a second number, the terminal may determine that the number of frequency domain resource units in the CSI-RS resource is equal to the second number, thereby ensuring that the CSI-RS signal actually used for transmitting the CSI-RS does not exceed the frequency domain range in which the terminal can receive the CSI-RS; in other words, the number of frequency domain resource units contained in the CSI-RS resource actually used for transmitting the CSI-RS is equal to the second number.

[0169] Since the second quantity of frequency domain resource units occupied by the CSI-RS resource must be a positive integer multiple of the first value, taking the frequency domain resource unit being the RB block and the first value being 4 as an example, the number of RB blocks occupied by the CSI-RS resource must be 4n, where n is a positive integer. Therefore, the terminal may determine that the second quantity is an integer multiple of the first value, and / or the terminal does not assume that the second quantity is a number other than an integer multiple of the first value. Thus, the second quantity is an integer multiple of the first value, for example, 4n.The network device also needs to determine that the second quantity is an integer multiple of the first value, thereby ensuring that the terminal and the network device have a consistent perception regarding the number of frequency domain resource units contained in the CSI-RS resource actually used to transmit the CSI-RS, which is a positive integer multiple of the first value, and regarding that the CSI-RS resource actually used to transmit the CSI-RS does not exceed the frequency domain range in which the terminal can receive the CSI-RS.

[0170] For example, the second quantity is 8, which is 2x4. The quantity of resource units in the frequency domain contained in the CSI-RS resource configured for the terminal by the network device is 12, which is greater than 8. In this case, the terminal can determine that the quantity of resource units in the frequency domain contained in the CSI-RS resource actually used for transmitting the CSI-RS is 8; and the network device also determines that the quantity of resource units in the frequency domain contained in the CSI-RS resource actually used for transmitting the CSI-RS is 8.

[0171] In one embodiment of the present invention, the method for determining the resource further comprises: determining the number of resource units in the frequency domain contained in the channel state information reference signal resource as a minimum value (from among integer multiples of a first value) that is less than or equal to a second number; wherein the number of configured resource units in the frequency domain in the channel state information reference signal resource is not equal to an integer multiple of the first value.

[0172] In one embodiment of the present invention, it is provided that although the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device is not less than the minimum value of the first number and the second number, the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device may be greater than or equal to the second number.

[0173] When the number of frequency domain resource units in the CSI-RS resource configured for the terminal by the network device exceeds a second number, the terminal may determine the number of frequency domain resource units in the CSI-RS resource to be a maximum value (among integer multiples of the first value) that is less than or equal to the second number; that is, the number of frequency domain resource units contained in the CSI-RS resource that is actually used for transmitting the CSI-RS is a maximum value (among integer multiples of the first value) that is less than or equal to the second number.

[0174] Since the number of frequency domain resource units occupied by the CSI-RS resource must be a positive integer multiple of the first value, if we take the frequency domain resource unit being the RB block and the first value being 4 as an example, the number of RB blocks occupied by the CSI-RS resource must be 4n, where n is a positive integer.If the second quantity has a value other than an integer multiple of the first value, the network device may set the number of resource units in the frequency domain contained in the CSI-RS resource as a maximum value (among integer multiples of the first value) that is less than or equal to the second quantity, thereby ensuring that the number of resource units in the frequency domain contained in the CSI-RS resource that is actually used to transmit the CSI-RS is an integer positive multiple of the first value, and the CSI-RS resource that is actually used to transmit the CSI-RS does not exceed the frequency domain range in which the terminal can receive the CSI-RS.

[0175] When the number of resource units in the frequency domain in the CSI-RS resource configured for the terminal by the network device exceeds a second quantity, and the second quantity is an integer multiple of the first value, the terminal may determine that the number of RBs occupied by the CSI-RS resource is equal to the second quantity.

[0176] When the number of frequency domain resource units in the CSI-RS resource configured for the terminal by the network device exceeds a second quantity, and the second quantity is not an integer multiple of the first value, the terminal may determine values ​​equal to an integer multiple of the first value from among the values ​​that are less than the second quantity; select a maximum value (for example, 4) from the values ​​equal to an integer multiple of the first value; and then determine that the number of RBs occupied by the CSI-RS resource is equal to this maximum value. The network device may also determine that the number of RBs occupied by the CSI-RS resource is equal to this maximum value, thereby ensuring that the terminal and the network device have a consistent perception regarding the number of frequency domain resource units contained in the CSI-RS resource actually used for transmitting the CSI-RS, which is this maximum value.

[0177] For example, the second quantity may be 8, and this number is a positive integer multiple of 4. The number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device is 12, which is greater than 8. In this case, the terminal can determine that the number of resource units in the frequency domain of the CSI-RS resource is 8, and the network device can also determine that the number of resource units in the frequency domain of the CSI-RS resource is 8.

[0178] For example, the second quantity may be 10, and this number is not a positive integer multiple of 4. The number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device is 12, which is greater than 10. In this case, the terminal may determine values ​​equal to 4n from among the values ​​less than 10, which are 4 and 8; select the maximum value, which is 8, from among the values ​​4 and 8; and then determine that the number of RBs occupied by the CSI-RS resource is 8. The network device may also determine that the number of resource units in the frequency domain of the CSI-RS resource is 8.

[0179] In one embodiment of the present invention, the method for determining a resource further comprises: determining that the number of resource units in the frequency domain of the channel state information reference signal resource is equal to a second number, when the number of resource units in the frequency domain of the channel state information reference signal resource exceeds the second number.

[0180] In one embodiment of the present invention, it is provided that although the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device is not less than the minimum value of the first number and the second number, the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device may be greater than or equal to the second number.

[0181] When the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device exceeds a second number, the terminal may determine that the number of resource units in the frequency domain of the CSI-RS resource is equal to the second number, and the network device may also determine that the number of resource units in the frequency domain of the CSI-RS resource is equal to the second number, and this ensures that the network device can send a CSI-RS signal to the terminal in the range of the first frequency domain resource capable of receiving the downlink transmission, thereby preventing the network device from sending a CSI-RS signal outside the range of the first frequency domain resource capable of ensuring that the terminal receives the downlink transmission that the terminal cannot receive.

[0182] In one embodiment of the present invention, it is provided that, from the number of values ​​that are less than or equal to the second number, the network device can determine the values ​​that are equal to an integer multiple of the first value; and, from the number of values ​​that are equal to an integer multiple of the first value, select the maximum value (for example, 4). After this, the network device can determine that the number of configurable resource units in the frequency domain as part of the CSI-RS resource will be no less than the minimum value of the first number and this maximum value.

[0183] For example, the first value is 4, the first quantity is 24, and the second quantity is 10. From the values ​​less than or equal to the second quantity, the network device can allocate values ​​equal to an integer multiple of the first value, such as 8 and 4, with 8 being the maximum value. The network device can then determine that the number of configurable frequency domain resource units within the CSI-RS resource will be no less than the smallest of the values ​​{24, 8}=8.

[0184] In one embodiment of the present invention, the second quantity is greater than or equal to the first quantity, and the number of configurable resource units in the frequency domain of the CSI-RS resource is greater than or equal to the minimum value of the first quantity and the third quantity, wherein the third quantity is the number of resource units in the frequency domain occupied by the BWP in which the first private domain resource capable of receiving the downlink transmission is located. When the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device exceeds the second quantity, the terminal can determine that the number of resource units in the frequency domain of the CSI-RS resource is equal to the second quantity.

[0185] For example, the minimum value of the number of configurable resource units in the frequency domain of the CSI-RS resource is the smaller of {the first quantity, the third quantity}. Since the third quantity is greater than or equal to the first quantity, the minimum value of the number of configurable resource units in the frequency domain of the CSI-RS resource may be the first quantity; in this case, the third quantity is greater than or equal to the number of configurable resource units in the frequency domain of the CSI-RS resource.Therefore, it is possible to ensure compliance with the condition that the minimum value of the number of configurable resource units in the frequency domain of the CSI-RS resource is the smallest of the values ​​{the first quantity, the third quantity}, and the minimum value (the first quantity) of the number of configurable resource units in the frequency domain of the CSI-RS resource lies within the range of the number of resource units in the frequency domain (the second quantity) occupied by the first frequency domain resource capable of ensuring the reception of the downlink transmission by the terminal. In this case, a situation cannot arise where the number of configurable resource units in the frequency domain of the CSI-RS resource exceeds the second quantity, which guarantees the reception of the CSI-RS signal by the terminal within the frequency domain range available for reception.

[0186] In one embodiment of the present invention, the number of configurable resource units in the frequency domain of the CSI-RS resource exceeds or is equal to the minimum value of the first quantity and the third quantity, wherein the third quantity is the number of resource units in the frequency domain occupied by the BWP in which the first frequency domain resource capable of receiving the downlink transmission is located. When the number of resource units in the frequency domain of the CSI-RS resource configured for the terminal by the network device exceeds the second quantity, the terminal can determine that the number of resource units in the frequency domain of the CSI-RS resource is equal to the second quantity.

[0187] Embodiments of the present invention also provide a method for determining a resource implemented by a communication system, wherein the communication system includes a terminal and a network device.

[0188] wherein the terminal is configured to receive a reference signal of channel state information, where the number of configurable resource units in the frequency domain in the resource of the reference signal of channel state information exceeds or is equal to the minimum value of the first quantity and the second quantity, and the second quantity is the number of resource units in the frequency domain occupied by the first resource of the frequency domain, capable of receiving the transmission on the downlink.

[0189] The network device is configured to determine, based on the minimum value of the first quantity and the second quantity, the minimum value of the number of resource units in the frequency domain in the resource of the reference signal of the channel state information configured for the terminal, wherein the second quantity is the number of resource units in the frequency domain occupied by the first resource of the frequency domain, capable of ensuring the reception of the downlink transmission by the terminal.

[0190] Based on the embodiments of the resource determination method described above, the present invention also provides embodiments of a resource determination device.

[0191] Fig. 9 shows a structural diagram of a resource determination device according to one embodiment of the present invention. This resource determination device is configured in a terminal. As shown in Fig. 9, this resource determination device includes:

[0192] a receiving module 901 configured to receive a channel state information reference signal resource, where the number of configurable frequency domain resource units in the channel state information reference signal resource is greater than or equal to a minimum value of a first quantity and a second quantity, and the second quantity is a number of frequency domain resource units occupied by the first frequency domain resource capable of receiving a downlink transmission.

[0193] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes: continuous frequency domain resources capable of receiving the downlink transmission, wherein the channel state information reference signal resource includes continuous resource units in the frequency domain.

[0194] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes: a continuous frequency domain resource capable of receiving the downlink transmission based on an initial resource unit in the frequency domain in the channel state information reference signal resource.

[0195] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes: a contiguous frequency domain resource, among all the contiguous frequency domain resources capable of receiving the downlink transmission, that occupies the smallest number of units in the frequency domain.

[0196] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes a discontinuous frequency domain resource capable of receiving the downlink transmission, wherein the channel state information reference signal resource includes discontinuous resource units in the frequency domain.

[0197] In one embodiment of the present invention, a first frequency domain resource that can be used by a terminal to receive a downlink transmission includes at least one of the following: a downlink subband; and a guard frequency interval.

[0198] In one embodiment of the present invention, the downlink subband includes at least one of the following: a frequency domain resource configured in a downlink slot other than an uplink subband; a frequency domain resource configured in a downlink slot other than an uplink subband and a guard frequency interval; a frequency domain resource configured in a flexible slot other than an uplink subband; a frequency domain resource configured in a flexible slot other than an uplink subband and a guard frequency interval; a downlink subband configured in an uplink slot; and a downlink subband configured in the flexible slot.

[0199] In one embodiment of the present invention, the first quantity is determined based on a predetermined rule, or the first quantity is configured by a network device.

[0200] In one embodiment of the present invention, the second quantity is an integer multiple of the first value; wherein the number of configurable resource units in the frequency domain in the channel state information reference signal resource is greater than or equal to the second quantity.

[0201] In one embodiment of the present invention, the data processing module is configured to further determine the number of resource units in the frequency domain contained in the channel state information reference signal resource as a maximum value (among integer multiples of the first value) that is less than or equal to a second number; wherein the number of configured resource units in the frequency domain in the channel state information reference signal resource exceeds or is equal to the second number.

[0202] In one embodiment of the present invention, the data processing module is configured to further determine that the number of resource units in the frequency domain of the channel state information reference signal resource exceeds a second number, when the number of resource units in the frequency domain of the channel state information reference signal resource exceeds the second number.

[0203] Fig. 10 shows a structural diagram of a resource determination device according to one embodiment of the present invention. This resource determination device is configured in a network device. As shown in Fig. 10, this resource determination device includes:

[0204] a data processing module 1001 configured to determine, based on a minimum value of the first quantity and the second quantity, a minimum value of the number of resource units in the frequency domain of the reference signal resource of the channel state information configured for the terminal, wherein the second quantity is the number of resource units in the frequency domain occupied by the first frequency domain resource capable of ensuring reception of the downlink transmission by the terminal.

[0205] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes: continuous frequency domain resources capable of receiving the downlink transmission, wherein the channel state information reference signal resource includes continuous resource units in the frequency domain.

[0206] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes: a continuous frequency domain resource capable of receiving the downlink transmission based on an initial resource unit in the frequency domain in the channel state information reference signal resource.

[0207] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes: a continuous frequency domain resource, among all the continuous frequency domain resources capable of receiving the downlink transmission, that occupies the smallest number of units in the frequency domain.

[0208] In one embodiment of the present invention, the first frequency domain resource capable of receiving the downlink transmission includes a discontinuous frequency domain resource capable of receiving the downlink transmission, wherein the channel state information reference signal resource includes discontinuous resource units in the frequency domain.

[0209] In one embodiment of the present invention, the first frequency domain resource that can be used for receiving a downlink transmission includes at least one of the following: a downlink subband; and a guard frequency interval.

[0210] In one embodiment of the present invention, the downlink subband includes at least one of the following: a frequency domain resource configured in a downlink slot other than an uplink subband; a frequency domain resource configured in a downlink slot other than an uplink subband and a guard frequency interval; a frequency domain resource configured in a flexible slot other than an uplink subband; a frequency domain resource configured in a flexible slot other than an uplink subband and a guard frequency interval; a downlink subband configured in an uplink slot; and a downlink subband configured in the flexible slot.

[0211] In one embodiment of the present invention, the first quantity is determined based on a predetermined rule, or the first quantity is configured by a network device.

[0212] In one embodiment of the present invention, the data processing module is configured to further determine that the second quantity is an integer multiple of the first value; wherein the number of configured resource units in the frequency domain in the resource of the reference signal of the channel state information is greater than or equal to the second quantity.

[0213] In one embodiment of the present invention, the data processing module is configured to further determine the number of resource units in the frequency domain contained in the channel state information reference signal resource as a maximum value (among integer multiples of a first value) that is less than or equal to a second number; wherein the number of configured resource units in the frequency domain in the channel state information reference signal resource is not equal to an integer multiple of the first value.

[0214] In one embodiment of the present invention, the data processing module is configured to further determine that the number of resource units in the frequency domain of the channel state information reference signal resource is equal to a second number when the number of resource units in the frequency domain of the channel state information reference signal resource exceeds the second number.

[0215] Regarding the embodiments of the device, since they basically correspond to the embodiments of the method, reference can be made to the description of the embodiments of the method for their respective parts. The embodiments of the device described above are for illustrative purposes only. The modules described as individual components may or may not be physically separated, and the components described as modules may or may not be physical modules, i.e., they may be located in a single location or they may be distributed across a plurality of network modules. Some or all of the modules may be selected depending on the actual needs to achieve the objective of implementing the technical solution of a specific embodiment of the present invention. Those skilled in the art should understand the essence of the claimed invention, and they can implement it without any creative efforts.

[0216] Embodiments of the present invention also provide a communication system including a terminal and a network device, wherein the terminal is configured to implement a method for determining a resource performed by the terminal according to any of the embodiments described above, and the network device is configured to implement a method for determining a resource performed by the network device according to any of the embodiments described above.

[0217] Variants of the present invention also provide a communication device including: a processor; and a memory for storing a computer program; wherein, when the computer program is executed by the processor, a method for determining a resource is implemented, executed by a terminal, according to any of the above-described embodiments thereof.

[0218] Embodiments of the present invention also provide a communication device that includes: a processor; and a memory for storing a computer program; wherein when the computer program is executed by the processor, a method for determining a resource is implemented, performed by a network device, according to any of the embodiments described above.

[0219] Embodiments of the present invention also provide a machine-readable storage medium for storing a computer program, wherein when the computer program is executed by the processor, a method for determining a resource is implemented, executed by the terminal, according to any of the embodiments described above.

[0220] Embodiments of the present invention also provide a machine-readable storage medium for storing a computer program, wherein when the computer program is executed by the processor, a method for determining a resource is implemented, executed by a network device, according to any of the embodiments described above.

[0221] Fig. 11 shows a block diagram of a resource determination device 1100 according to one embodiment of the present invention. The device 1100 may be a base station. As shown in Fig. 11, the device 1100 includes a data processing component 1122, a wireless transmission / reception component 1124, an antenna component 1126, and a signal processing unit adapted to a specific wireless interface. The data processing component 1122 may further include one or more processors. One of the processors in the data processing component 1122 may be configured to implement the resource determination method performed by the network device according to any of the embodiments described above.

[0222] Fig. 12 shows a structural diagram of a resource determination device 1200 according to one embodiment of the present invention. For example, the device 1200 may be a terminal such as a mobile phone, a computer, a digital broadcasting terminal, a message transceiver, a game console, a tablet, a medical device, a training device, a personal digital assistant, or another similar device.

[0223] As shown in Fig. 12, device 1200 may include one or more of the following components: data processing component 1202, memory 1204, power component 1206, multimedia component 1208, audio component 1210, input / output (I / O) interface 1212, sensor component 1214, and communication component 1216.

[0224] Data processing component 1202 typically controls all actions of device 1200, such as operations related to data display, telephone calls, data exchange, camera operation, and recording. Data processing component 1202 may include one or more processors 1220 that execute instructions for performing all or some stages of the resource determination method performed by the terminal, according to any of the embodiments described above. Moreover, data processing component 1202 may include one or more modules that facilitate interaction between data processing component 1202 and other components. For example, data processing component 1202 may include a multimedia module that facilitates interaction between multimedia component 1208 and data processing component 1202.

[0225] Memory 1204 is configured to store various types of data that support the operation of device 1200. Examples of such data include commands for any applications or methods implemented on device 1200, contact information, phone book data, messages, images, videos, and other similar data.

[0226] Power component 1206 supplies power to various components of device 1200. Power component 1206 may include a power management system, one or more power sources, and any other elements associated with generating, managing, and distributing power for device 1200.

[0227] The multimedia component 1208 includes a screen, which is an output interface that communicates between the device 1200 and the user. In some embodiments of the present invention, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch display for receiving input signals transmitted by the user.

[0228] The audio component 1210 is configured to emit and / or receive audio signals. For example, the audio component 1210 includes a microphone (MIC) configured to receive an external audio signal when the device 1200 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can then be stored in memory 1204 or transmitted via communication component 1216. In some embodiments of the present invention, the audio component 1210 further includes a speaker for emitting audio signals.

[0229] The input / output (I / O) interface 1212 provides mutual communication between the data processing component 1202 and peripheral interface modules such as a keyboard, a mouse wheel, buttons, etc. These buttons may include, but are not limited to, a return button, a volume control button, a start button, and a lock button.

[0230] The sensor component 1214 includes one or more sensors for providing an assessment of the state of the device 1200 in various aspects.

[0231] The communication component 1216 is configured to facilitate communication, both wirelessly and by wire, between the device 1200 and other devices. The device 1200 can access a wireless network using a communication standard such as Wi-Fi (wireless Internet access technology according to the IEEE 802.1 lx standard), 2G (second generation communication standard), 3G (third generation communication standard), 4G LTE (fourth generation communication standard "Long Term Evolution"), 5G NR (fifth generation communication standard "New Radio"), or combinations thereof. In one of the exemplary embodiments of the present invention, the communication component 1216 receives a broadcast signal or broadcast information from an external broadcast control system via a broadcast channel.In one exemplary embodiment of the present invention, communication component 1216 further includes an NFC (near field communication) module, facilitating short-range communication. For example, the NFC module may be implemented using RFID (radio frequency identification), IrDA (Infrared Data Association), UWB (ultra-wideband), Bluetooth (wireless communication), and other technologies.

[0232] In one exemplary embodiment of the present invention, the device 1200 may be implemented on the basis of one or more elements such as an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), an FPGA-type programmable logic array, a controller, a microcontroller, a microprocessor, or another electronic component, to implement the resource determination method according to any of the embodiments described above.

[0233] According to one of the exemplary embodiments of the present invention, a non-volatile computer-readable storage medium is also proposed, for example, included in the memory 1204 and containing instructions that can be executed by the processor 1220 of the device 1200 for the purpose of implementing the resource determination method according to any of the embodiments described above. For example, the non-volatile computer-readable storage medium can be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, or another device of a similar kind.

[0234] Other embodiments of the present invention will become apparent to those skilled in the art upon review of the present description and upon practice of the invention disclosed herein. The present invention is intended to cover any modifications, uses, or adaptations made thereto that comply with its general principles and that include such departures from the claimed invention that follow from common knowledge or generally accepted practice in the art. It is intended that the present description and examples be illustrative only, and that the true scope and spirit of the present invention be indicated by the following claims.

[0235] It should be understood that the present invention is not limited to the specific construction described above and illustrated in the drawings, and that various changes and modifications can be made thereto without departing from the scope of the claimed invention. The scope of the present invention is limited solely by the appended claims.

Claims

1. A method for determining a resource performed by a terminal and providing for obtaining a channel state information reference signal based on a channel state information reference signal resource, wherein the number of configurable frequency domain resource units in the channel state information reference signal resource exceeds a minimum value of the first quantity and the second quantity, and the second quantity is the number of frequency domain resource units occupied by the first frequency domain resource capable of receiving a downlink transmission.

2. The method of claim 1, wherein the first frequency domain resource capable of receiving the downlink transmission comprises continuous frequency domain resources capable of receiving a downlink transmission, wherein the channel state information reference signal resource comprises continuous frequency domain resource units.

3. The method of claim 2, wherein the first frequency domain resource capable of receiving the downlink transmission comprises a continuous frequency domain resource capable of receiving a downlink transmission based on an initial frequency domain resource unit within the channel state information reference signal resource.

4. The method according to any one of paragraphs 1-3, wherein the first frequency domain resource capable of receiving the downlink transmission comprises at least one of the following elements: downlink subband; or guard frequency interval.

5. The method of claim 4, wherein the downlink subband comprises at least one of the following elements: a frequency domain resource configured in a downlink timeslot other than an uplink subband; a frequency domain resource configured in a downlink timeslot other than the uplink subband and the guard frequency interval; a frequency domain resource configured in a flexible timeslot other than the uplink sub-band; a frequency domain resource configured in a flexible time slot other than the uplink sub-band and the guard frequency interval; a downlink subband configured in an uplink timeslot; or downlink subband configured in a flexible timeslot.

6. The method according to any one of paragraphs 1-5, in which the first quantity is determined based on a predetermined rule or the first quantity is configured by the network device.

7. The method according to any one of paragraphs 1-6, further comprising determining the number of frequency domain resource units contained in the channel state information reference signal resource as the maximum value (among integer multiples of the first value) that is less than or equal to the second number; wherein the number of configured resource units in the frequency domain as part of the resource of the reference signal of the channel state information exceeds or is equal to the second number; or This method further provides for determining that the number of resource units in the frequency domain of the resource of the reference signal of the channel state information is equal to the second number if the number of resource units in the frequency domain of the resource of the reference signal of the channel state information exceeds the second number.

8. A method for determining a resource performed by a network device and providing for determining, based on the minimum value of the first quantity and the second quantity, the minimum value of the number of resource units in the frequency domain as part of the resource of the reference signal of the channel state information configured for the terminal, wherein the second quantity represents the number of resource units in the frequency domain occupied by the first resource of the frequency domain capable of ensuring the reception of the downlink transmission by the terminal.

9. The method of claim 8, wherein the first frequency domain resource capable of receiving the downlink transmission comprises continuous frequency domain resources capable of receiving a downlink transmission, wherein the channel state information reference signal resource comprises continuous frequency domain resource units.

10. The method of claim 9, wherein the first frequency domain resource capable of receiving the downlink transmission comprises a continuous frequency domain resource capable of receiving a downlink transmission based on an initial frequency domain resource unit within the channel state information reference signal resource.

11. The method according to any one of paragraphs 8-10, wherein the first frequency domain resource capable of receiving the downlink transmission comprises at least one of the following elements: downlink subband; or guard frequency interval.

12. The method of claim 11, wherein the downlink subband comprises at least one of the following elements: a frequency domain resource configured in a downlink timeslot other than an uplink subband; a frequency domain resource configured in a downlink timeslot other than the uplink subband and the guard frequency interval; a frequency domain resource configured in a flexible timeslot other than the uplink sub-band; a frequency domain resource configured in a flexible time slot other than the uplink sub-band and the guard frequency interval; a downlink subband configured in an uplink timeslot; or downlink subband configured in a flexible timeslot.

13. The method according to any one of paragraphs 8-12, in which the first quantity is determined based on a predetermined rule or the first quantity is configured by the network device.

14. The method according to any one of paragraphs 8-13, further comprising determining the number of frequency domain resource units contained in the channel state information reference signal resource as the maximum value (among integer multiples of the first value) that is less than or equal to the second number; wherein the number of configured resource units in the frequency domain as part of the resource of the reference signal of the channel state information exceeds or is equal to the second number; or This method additionally provides determining that the number of resource units in the frequency domain of the channel state information reference signal resource is equal to the second number, if the number of resource units in the frequency domain of the channel state information reference signal resource exceeds the second number.

15. A communication device comprising: processor; and memory for storing a computer program; wherein the computer program is executed by the processor to implement the method for determining the resource according to any of paragraphs 1-7.

16. A communication device comprising: processor; and memory for storing a computer program; wherein the computer program is executed by the processor to implement the method for determining the resource according to any of paragraphs 8-14.

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