Channel state information reporting method, terminal, network equipment and communication system

Abstract

The invention relates to a channel state information reporting method, a terminal, network equipment and a communication system. The channel state information reporting method comprises the following steps: acquiring a first reference signal resource; performing measurement based on the first reference signal resource to obtain first channel state information; and reporting the first channel state information, wherein the first channel state information comprises time difference information, and the time difference information indicates time differences of channel state information reference signals on different reference signal resources reaching the terminal. Through the embodiment of the invention, the time difference of multi-TRP joint transmission can be determined, so that the performance of multi-TRP joint transmission is ensured.

Description

Channel state information reporting method, terminal, network equipment and communication system Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a channel state information reporting method, a terminal, a network device, and a communication system. Background Art

[0002] When multiple transmission reception points (TRPs) perform coherent joint transmission (CJT), the transmissions of multiple TRPs can reach the terminal at the same time, or the arrival time difference is within a certain time threshold, which can ensure that the terminal receives the data sent by multiple TRPs.

[0003] Summary of the Invention

[0004] When multiple TRPs perform coherent joint transmission, how to ensure the performance of the joint transmission of multiple TRPs is a problem that needs to be solved.

[0005] The embodiments of the present disclosure provide a channel state information reporting method, a terminal, a network device, and a communication system.

[0006] According to a first aspect of an embodiment of the present disclosure, a channel state information reporting method is proposed, which is applied to a terminal, including: obtaining a first reference signal resource; performing measurement based on the first reference signal resource to obtain first channel state information; and reporting the first channel state information; wherein the first channel state information includes time difference information, and the time difference information indicates the time difference between channel state information reference signals on different reference signal resources arriving at the terminal.

[0007] According to the second aspect of an embodiment of the present disclosure, a channel state information reporting method is proposed, which is applied to a network device, including: sending configuration information of a first reference signal resource, wherein the configuration information of the first reference signal resource is used to configure the first reference signal resource for a terminal; obtaining first channel state information, wherein the first channel state information is measured and reported by the terminal based on the first reference signal resource; wherein the first channel state information includes time difference information, and the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources arriving at the terminal.

[0008] According to the third aspect of an embodiment of the present disclosure, a channel state information reporting method is proposed, including: a network device sends configuration information of a first reference signal resource, wherein the configuration information of the first reference signal resource is used to configure the first reference signal resource for a terminal; the terminal performs measurement based on the first reference signal resource to obtain first channel state information; and reports the first channel state information; wherein the first channel state information includes time difference information, and the time difference information indicates the time difference between channel state information reference signals on different reference signal resources reaching the terminal; the network device obtains the first channel state information.

[0009] According to the fourth aspect of an embodiment of the present disclosure, a terminal is proposed, including: a transceiver module, used to obtain a first reference signal resource sent by a network device; a processing module, used to perform measurements based on the first reference signal resource to obtain first channel state information; and reporting the first channel state information; wherein the first channel state information includes time difference information, and the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources arriving at the terminal.

[0010] According to the fifth aspect of an embodiment of the present disclosure, a network device is proposed, including: a transceiver module, used to send configuration information of a first reference signal resource, wherein the configuration information of the first reference signal resource is used to configure the first reference signal resource for a terminal; the transceiver module is also used to obtain first channel state information, wherein the first channel state information is measured and reported by the terminal based on the first reference signal resource; wherein the first channel state information includes time difference information, and the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources arriving at the terminal.

[0011] According to a sixth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; wherein the processor is configured to execute the channel state information reporting method of the first aspect.

[0012] According to a seventh aspect of an embodiment of the present disclosure, a network device is proposed, comprising: one or more processors; wherein the processor is configured to execute the channel state information reporting method of the second aspect.

[0013] According to an eighth aspect of an embodiment of the present disclosure, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to implement the channel state information reporting method of the first aspect, and the network device is configured to implement the channel state information reporting method of the second aspect.

[0014] According to a ninth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions. When the instructions are executed on a communication device, the communication device executes the channel state information reporting method of any one of the first and second aspects.

[0015] Through the embodiments of the present disclosure, the time difference of the joint transmission of multiple TRPs can be determined, thereby ensuring the performance of the joint transmission of multiple TRPs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0017] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0018] FIG2 is an interactive diagram of a channel state information reporting method according to an embodiment of the present disclosure.

[0019] FIG3A is a schematic flow chart of a method for reporting channel state information according to an embodiment of the present disclosure.

[0020] FIG3B is a schematic flow chart of a method for reporting channel state information according to an embodiment of the present disclosure.

[0021] FIG3C is a schematic flow chart of a channel state information reporting method according to an embodiment of the present disclosure.

[0022] FIG4 is a schematic flow chart of a method for reporting channel state information according to an embodiment of the present disclosure.

[0023] FIG5 is an interactive diagram illustrating a method for reporting channel state information according to an embodiment of the present disclosure.

[0024] FIG6A is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure.

[0025] FIG6B is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure.

[0026] FIG7A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure.

[0027] FIG7B is a schematic diagram of the structure of the chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] The embodiments of the present disclosure provide a channel state information reporting method, a terminal, a network device, and a communication system.

[0029] In the first aspect, an embodiment of the present disclosure proposes a channel state information reporting method, which is applied to a terminal and includes: obtaining a first reference signal resource; performing measurement based on the first reference signal resource to obtain first channel state information; and reporting the first channel state information; wherein the first channel state information includes time difference information, and the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources arriving at the terminal.

[0030] In the above embodiment, the first reference signal resource includes a channel measurement resource, and the channel measurement resource includes multiple reference signal resources; the time difference information indicates the time difference between the reference signals on the second reference signal resource and the third reference signal resource arriving at the terminal; wherein the third reference signal resource is one of the multiple reference signal resources, and the second reference signal resource is another reference signal resource among the multiple reference signal resources that is different from the third reference signal resource.

[0031] In combination with some embodiments of the first aspect, in some embodiments, the first reference signal resource includes a channel measurement resource, and the channel measurement resource includes: multiple reference signal resources; time difference information indicates the time difference between the reference signals on the second reference signal resource and the third reference signal resource arriving at the terminal; wherein the third reference signal resource is one of the multiple reference signal resources, and the second reference signal resource is other reference signal resources among the multiple reference signal resources that are different from the third reference signal resource.

[0032] In the above embodiment, a reference signal resource is selected from multiple reference signal resources for use as a reference, and its arrival time difference relative to the reference signals corresponding to other reference signal resources is compared, so that the terminal obtains the arrival time difference of the channel reference signals on different reference signal resources.

[0033] In combination with some embodiments of the first aspect, in some embodiments, the third reference signal resource is determined using at least one of the following methods: based on first indication information sent by a network device, determining the third reference signal resource among multiple reference signal resources, the first indication information is used to indicate the third reference signal resource; determining the reference signal resource with the smallest reference signal resource identifier among the multiple reference signal resources as the third reference signal resource; determining the reference signal resource corresponding to the first reference signal as the third reference signal resource, wherein the first reference signal is the earliest arriving channel state information reference signal.

[0034] In the above embodiment, the method for determining the third reference signal resource used as a reference is clarified. The third reference signal resource used as a reference can be determined by indication from the base station or self-measurement by the terminal, which can avoid abnormal acquisition of subsequent time difference results due to unclear determination method of the third reference signal resource, thereby ensuring the performance of multi-TRP joint transmission.

[0035] In combination with some embodiments of the first aspect, in some embodiments, the time difference includes: the time interval between the time domain positions corresponding to different channel state information reference signals, wherein the time domain position includes at least one of the following: time slot position and symbol position; or the time difference does not include the time interval between the time domain positions corresponding to different channel state information reference signals.

[0036] In the above embodiment, by defining the time difference from the time domain position dimension and other dimensions, the solution can obtain features indicating the time difference from multiple dimensions, thereby making the solution more complete and having a wider range of applications.

[0037] In combination with some embodiments of the first aspect, in some embodiments, reporting the first channel state information includes at least one of the following: reporting time difference information; reporting code points, and there is a first mapping relationship between the code points and the time difference information.

[0038] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: receiving second indication information sent by the network device, where the second indication information is used to indicate the first mapping relationship.

[0039] In combination with some embodiments of the first aspect, in some embodiments, the first mapping relationship is based on at least one of the following configurations: based on a cyclic prefix length configuration, wherein different cyclic prefix lengths correspond to different first mapping relationships; based on a subcarrier spacing SCS configuration, wherein different subcarrier spacings correspond to different first mapping relationships.

[0040] In the above embodiment, the solution can have corresponding mapping relationships in scenarios with different cyclic prefix lengths and different subcarrier spacings, so that the solution has a wider range of application scenarios and the communication system is more stable.

[0041] In combination with some embodiments of the first aspect, in some embodiments, the first channel state information and other channel state information are included in different channel state information reports, and the other channel state information includes at least one of the following: channel quality indication CQI; precoding matrix indication PMI; rank indication RI; channel state information reference signal resource indication CRI; layer indication LI; layer 1 reference signal received power L1-RSRP; layer 1 signal to interference and noise ratio L1-SINR; Doppler shift; Doppler spread; average delay; delay spread; time domain channel property TDCP.

[0042] In the above embodiment, the first channel state information can be reported separately, saving signaling overhead.

[0043] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: receiving channel state information reporting configuration information sent by a network device, where the channel state information reporting configuration information is used to configure the first channel state information to include time difference information.

[0044] In combination with some embodiments of the first aspect, in some embodiments, the first channel state information is reported based on at least one of the following methods: based on periodic reporting, based on non-periodic reporting, or based on semi-persistent reporting.

[0045] In the above embodiment, the first channel state information can be reported in multiple ways, which improves the universality of the solution.

[0046] In combination with some embodiments of the first aspect, in some embodiments, the first channel state information reporting method includes at least one of the following: single PUCCH transmission; single PUSCH transmission; multiple PUCCH transmissions; multiple PUSCH transmissions.

[0047] In combination with some embodiments of the first aspect, in some embodiments, the first channel state information further includes: a third reference signal resource identifier.

[0048] In combination with some embodiments of the first aspect, in some embodiments, the first channel state information further includes: a second reference signal resource identifier; the second reference signal resource identifier has a one-to-one correspondence with the time difference.

[0049] In the second aspect, an embodiment of the present disclosure proposes a channel state information reporting method, which is applied to a network device, including: sending configuration information of a first reference signal resource, where the configuration information of the first reference signal resource is used to configure the first reference signal resource for the terminal; obtaining first channel state information, where the first channel state information is measured and reported by the terminal based on the first reference signal resource; wherein the first channel state information includes time difference information, where the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources arriving at the terminal.

[0050] In the above embodiment, the configuration information of the first reference signal resource is sent to the terminal, so that the terminal performs measurements based on the first reference signal resource and reports the time difference between the channel reference signals on different reference signal resources arriving at the terminal, thereby enabling the network device to adjust the time for the channel state information reference signals on different reference signal resources to arrive at the terminal based on the time difference reported by the terminal, such as adjusting the sending time of multiple TRP information, so that the arrival time of information sent by different TRPs is within the cyclic prefix range, thereby ensuring the performance of multi-TRP joint transmission.

[0051] In combination with some embodiments of the second aspect, in some embodiments, the first reference signal resource includes a channel measurement resource, and the channel measurement resource includes multiple reference signal resources; the time difference information indicates the time difference between the reference signals on the second reference signal resource and the third reference signal resource arriving at the terminal; wherein the third reference signal resource is one of the multiple reference signal resources, and the second reference signal resource is other reference signal resources among the multiple reference signal resources that are different from the third reference signal resource.

[0052] In combination with some embodiments of the second aspect, in some embodiments, the third reference signal resource includes at least one of the following: a reference signal resource indicated by the first indication information sent by the network device; a reference signal resource with the smallest reference signal resource identifier among multiple reference signal resources; a reference signal resource corresponding to the first reference signal, wherein the first reference signal is the earliest arriving channel state information reference signal.

[0053] In combination with some embodiments of the second aspect, in some embodiments, the time difference includes: the time interval between the time domain positions corresponding to different channel state information reference signals, wherein the time domain position includes at least one of the following: time slot position and symbol position; or the time difference does not include the time interval between the time domain positions corresponding to different channel state information reference signals.

[0054] In combination with some embodiments of the second aspect, in some embodiments, the network device obtains the first channel state information in at least one of the following ways: obtaining time difference information; obtaining code points, and there is a first mapping relationship between the code points and the time difference information.

[0055] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: sending second indication information, where the second indication information is used to indicate the first mapping relationship.

[0056] In combination with some embodiments of the second aspect, in some embodiments, the first mapping relationship is based on at least one of the following configurations: based on the cyclic prefix length configuration, wherein different cyclic prefix lengths correspond to different first mapping relationships; based on the subcarrier spacing SCS configuration, wherein different subcarrier spacings correspond to different first mapping relationships.

[0057] In combination with some embodiments of the second aspect, in some embodiments, the first channel state information and other channel state information are included in different channel state information reports, and the other channel state information includes at least one of the following: channel quality indication CQI; precoding matrix indication PMI; rank indication RI; channel state information reference signal resource indication CRI; layer indication LI; layer 1 reference signal received power L1-RSRP; layer 1 signal to interference and noise ratio L1-SINR; Doppler shift; Doppler spread; average delay; delay spread; time domain channel property TDCP.

[0058] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: sending channel state information reporting configuration information, where the channel state information reporting configuration information is used to configure the first channel state information to include time difference information.

[0059] In combination with some embodiments of the second aspect, in some embodiments, the first channel state information is acquired by the network device based on at least one of the following methods: based on periodic acquisition, based on non-periodic acquisition, or based on semi-persistent acquisition.

[0060] In combination with some embodiments of the second aspect, in some embodiments, the first channel state information is obtained by the network device using at least one of the following methods: single PUCCH transmission; single PUSCH transmission; multiple PUCCH transmissions; multiple PUSCH transmissions.

[0061] In combination with some embodiments of the second aspect, in some embodiments, the first channel state information further includes: a third reference signal resource identifier.

[0062] In combination with some embodiments of the second aspect, in some embodiments, the first channel state information further includes: a second reference signal resource identifier; the second reference signal resource identifier has a one-to-one correspondence with the time difference.

[0063] In the third aspect, an embodiment of the present disclosure proposes a channel state information reporting method, which includes: a network device sends configuration information of a first reference signal resource, and the configuration information of the first reference signal resource is used to configure the first reference signal resource for the terminal; the terminal performs measurement based on the first reference signal resource to obtain first channel state information; and reports the first channel state information; wherein the first channel state information includes time difference information, and the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources reaching the terminal; the network device obtains the first channel state information.

[0064] In a fourth aspect, an embodiment of the present disclosure proposes a terminal, comprising: a transceiver module, for obtaining a first reference signal resource sent by a network device; a processing module, for performing measurements based on the first reference signal resource to obtain first channel state information; and reporting the first channel state information; wherein the first channel state information includes time difference information, and the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources arriving at the terminal.

[0065] In the fifth aspect, an embodiment of the present disclosure proposes a network device, including: a transceiver module, used to send configuration information of a first reference signal resource, the configuration information of the first reference signal resource is used to configure the first reference signal resource for the terminal; the transceiver module is also used to obtain first channel state information, the first channel state information is measured and reported by the terminal based on the first reference signal resource; wherein the first channel state information includes time difference information, the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources arriving at the terminal.

[0066] In a sixth aspect, an embodiment of the present disclosure proposes a terminal, comprising: one or more processors; wherein the processor is used to execute the channel state information reporting method of the first aspect.

[0067] In a seventh aspect, an embodiment of the present disclosure proposes a network device, comprising: one or more processors; wherein the processor is used to execute the channel state information reporting method of the second aspect.

[0068] In an eighth aspect, an embodiment of the present disclosure proposes a communication system, comprising: a terminal and a network device, wherein the terminal is configured to implement the channel state information reporting method of the first aspect, and the network device is configured to implement the channel state information reporting method of the second aspect.

[0069] In a ninth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions, which, when the instructions are executed on a communication device, enables the communication device to execute the channel state information reporting method of any one of the first and second aspects.

[0070] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods.

[0071] The present disclosure provides a channel state information reporting method, terminal, network device, and communication system. In some embodiments, the terms "channel bagging information reporting method," "information processing method," and "communication method" are interchangeable; the terms "channel state information reporting device," "information processing device," and "communication device" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0072] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0073] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0074] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0075] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0076] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0077] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0078] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0079] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0080] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0081] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0082] In some embodiments, terms such as "time / frequency" and "time / frequency domain" refer to the time domain and / or the frequency domain.

[0083] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0084] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0085] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0086] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0087] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0088] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0089] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0090] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0091] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0092] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0093] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0094] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0095] As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 .

[0096] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0097] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0098] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0099] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0100] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0101] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0102] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0103] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0104] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0105] R18 proposes coherent joint transmission (CJT) across multiple Transmission Reception Points (TRPs). When multiple TRPs perform coherent joint transmission, ideal synchronization between them and ideal backhaul links between them ensures that information sent by multiple TRPs reaches the terminal simultaneously. Alternatively, the arrival time differences between information sent by multiple TRPs are within a certain time threshold, such as the cyclic prefix (CP), ensuring that the terminal can simultaneously receive data from different TRPs.

[0106] It is understandable that if the time difference between multiple TRPs reaching the terminal is large (for example, not at the same time or the time difference is greater than the cyclic prefix length), the terminal cannot receive information sent by different TRPs at the same time.

[0107] Based on this, an embodiment of the present disclosure proposes a method for reporting channel state information (CSI).

[0108] FIG2 is an interactive diagram of a channel state information reporting method according to an embodiment of the present disclosure. As shown in FIG2 , the embodiment of the present disclosure relates to a channel state information reporting method, which includes:

[0109] Step S2101 : The network device 102 sends configuration information of a first reference signal resource to the terminal 101 .

[0110] In some embodiments, terminal 101 obtains a first reference signal resource.

[0111] In some embodiments, terminal 101 receives a first reference signal resource.

[0112] In some embodiments, terminal 101 receives a first reference signal resource from network device 102 .

[0113] In some embodiments, the number of first reference signal resources may be one or more.

[0114] In some embodiments, the first reference signal resource includes a channel measurement resource (CMR).

[0115] Optionally, the first reference signal resource includes a CMR.

[0116] In some embodiments, a CMR includes multiple reference signal resources.

[0117] Exemplarily, a CMR includes multiple channel state information reference signal resources (Channel State Information Reference Signal resources, CSI-RS resources).

[0118] In summary, the network device may inform the terminal of the situation of a reference signal resource. For example, the network device may send one or more reference signal resources (reference signal resource configuration) to the terminal so that the terminal can measure the reference signal resources to obtain time difference information.

[0119] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0120] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0121] In some embodiments, the terminal 101 obtains the first reference signal resource configuration information sent by the network device 102, and performs the first reference signal resource configuration based on the first reference signal resource configuration information, thereby determining the first reference signal resource.

[0122] Of course, it should be understood that the terminal may also determine the first reference signal resource in other ways, and perform measurement and reporting accordingly.

[0123] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0124] Step S2102: Terminal 101 performs measurement based on the first reference signal resource.

[0125] In some embodiments, terminal 101 measures the CSI-RS based on the first reference signal resource.

[0126] Optionally, terminal 101 measures the arrival time of the corresponding CSI-RS based on the first reference signal resource. The arrival time of the CSI-RS can be referred to as the time when the CSI-RS arrives at the terminal, or it can be the time when the terminal receives the CSI-RS. It should be understood that measuring based on the first reference signal resource can also be understood as measuring on the first reference signal resource. By measuring the reference signal resource, the arrival time of the reference signal on the reference signal resource can be obtained. Since there can be multiple reference signal resources, the difference in the arrival time of the reference signals on the multiple reference signal resources, i.e., the arrival time difference, can be obtained. The arrival time difference can be represented by time difference information.

[0127] In some embodiments, terminal 101 performs measurement based on a first reference signal resource comprising a CMR, where the CMR comprises a plurality of reference signal resources.

[0128] Exemplarily, the terminal 101 performs measurement based on a first reference signal resource including a CMR, where the CMR includes multiple CSI-RS resources

[0129] Step S2103: Terminal 101 determines first channel state information.

[0130] In some embodiments, terminal 101 performs reference signal measurement based on the first reference signal resource to determine the first channel state information.

[0131] Optionally, the terminal 101 measures the CSI-RS based on the first reference signal resource to determine the first channel state information.

[0132] In some embodiments, the first channel state information includes time difference information.

[0133] Optionally, the time difference information indicates the time difference between CSI-RSs on different reference signal resources arriving at the terminal.

[0134] In some embodiments, the content included in the first channel state information may be obtained by configuring channel state information reporting (CSI report config) information, wherein the channel state information reporting configuration information is sent by the network device 102 to the terminal 101 .

[0135] Optionally, the terminal 101 receives channel state information reporting configuration information sent by the network device 102, wherein the channel state information reporting configuration information is used to configure the first channel state information to include time difference information.

[0136] After obtaining the time difference information, the terminal may notify the network device of the time difference information. Specifically, reporting the time difference information to the network device may also be performed based on configuration information issued by the network device. For example, the network device may send channel state reporting configuration information to the terminal, and the terminal may report the time difference information based on the channel state reporting configuration information.

[0137] In some embodiments, the time difference information indicates a time difference between when the reference signals on the second reference signal resource and the reference signals on the third reference signal resource arrive at the terminal.

[0138] Optionally, the third reference signal resource is a reference signal resource among multiple reference signal resources, and the second reference signal resource is another reference signal resource among the multiple reference signal resources that is different from the third reference signal resource.

[0139] In some embodiments, when the first reference signal resource includes a CMR, and the CMR includes multiple reference signal resources, the third reference signal resource is one of the multiple reference signal resources included in the CMR. It should be understood that the time difference information reported by the terminal device may indicate a difference between the multiple reference signal resources. For example, the time difference may be a time difference between other reference signal resources and a reference signal resource used as a benchmark, with respect to the reference signal resource among the multiple reference signal resources.

[0140] Exemplarily, the first reference signal resource includes a CMR, the CMR includes multiple CSI-RS resources, and the third reference signal resource is one of the multiple CSI-RS resources, for example, the first CSI-RS resource.

[0141] In some embodiments, when the first reference signal resource includes a CMR, and the CMR includes multiple reference signal resources, the second reference signal resource is a reference signal resource among the multiple reference signal resources included in the CMR except the third reference signal resource.

[0142] Exemplarily, the first reference signal resource includes a CMR, which includes multiple CSI-RS resources. The third reference signal resource is one of the multiple CSI-RS resources, for example, the first CSI-RS resource. The second reference signal resource is a reference signal resource among the multiple CSI-RS resources other than the third reference signal resource, for example, a second CSI-RS resource, and the second CSI-RS resource is different from the first CSI-RS resource.

[0143] In some embodiments, the third reference signal resource is determined in at least one of the following ways:

[0144] determining based on the first indication information;

[0145] Determined based on a reference signal resource identifier;

[0146] The reference signal resource corresponding to the first reference signal is determined.

[0147] That is, the reference signal resource used as a benchmark can be determined in a variety of ways, and can be determined by a network device or by the terminal itself.

[0148] In some embodiments, determining based on the first indication information includes: determining a third reference signal resource from a plurality of reference signal resources based on the first indication information.

[0149] Optionally, the first indication information is sent by the network device 102. The first indication information is used to indicate the third reference signal resource.

[0150] Exemplarily, following the embodiment in which the first reference signal resource includes a CMR, and the CMR includes multiple CSI-RS resources, the first indication information indicates that one of the multiple CSI-RS resources is a third reference signal resource. For example, the first indication information indicates that the first CSI-RS resource is the third reference signal resource.

[0151] In some embodiments, determining based on a reference signal resource identifier includes: determining based on a size of the reference signal resource identifier.

[0152] Optionally, a reference signal resource having the smallest reference signal resource identifier among the multiple reference signal resources is determined as the third reference signal resource.

[0153] Exemplarily, following the embodiment in which the first reference signal resource includes CMR and the CMR includes multiple CSI-RS resources, assuming that among the multiple CSI-RS resources, the CSI-RS resource with the smallest identifier is the first CSI-RS resource, the first CSI-RS resource is determined to be the third reference signal resource.

[0154] In some embodiments, a reference signal resource corresponding to a first reference signal is determined as a third reference signal resource, wherein the first reference signal is the earliest arriving CSI-RS.

[0155] Optionally, the first reference signal is obtained by measurement by terminal 101.

[0156] Exemplarily, following an embodiment in which the first reference signal resource includes CMR, and the CMR includes multiple CSI-RS resources, the terminal 101 measures and obtains the CSI-RS that arrives at the terminal 101 earliest. Assuming that the CSI-RS resource corresponding to the CSI-RS that arrives at the terminal 101 earliest is the first resource, the first resource is determined as the third reference signal resource.

[0157] In some embodiments, the first channel state information further includes a third reference signal resource identifier.

[0158] Exemplarily, following the embodiment in which the first reference signal resource includes a CMR, which includes multiple CSI-RS resources, terminal 101 measures and obtains the CSI-RS that arrives earliest at terminal 101. Assuming that the CSI-RS resource corresponding to the CSI-RS that arrives earliest at terminal 101 is the first resource, the first resource is determined as the third reference signal resource. The terminal then needs to report the third reference signal resource identifier when reporting the time difference.

[0159] In some embodiments, the first channel state information further includes a second reference signal resource identifier.

[0160] Exemplarily, after determining the third reference signal resource, the terminal obtains the time difference between the reference signal on the second reference signal resource and the reference signal on the third reference signal resource, and the first channel state information also includes the second reference signal resource identifier corresponding to each time difference.

[0161] In some embodiments, the second reference signal resource identifier and the time difference have a one-to-one correspondence.

[0162] Exemplarily, continuing with the above embodiment, after determining the third reference signal resource, the terminal obtains the time difference between the reference signal on the second reference signal resource and the reference signal on the third reference signal resource. Since the second reference signal resource is a reference signal resource other than the third reference signal resource among the multiple reference signal resources, each second reference signal resource has a one-to-one corresponding time difference with the third reference signal resource. Therefore, the second reference signal resource identifier and the time difference have a one-to-one correspondence.

[0163] Therefore, it can be obtained that, in some embodiments, the third reference signal resource is determined using at least one of the following AC methods:

[0164] A. determining the third reference signal resource from a plurality of reference signal resources based on the first indication information sent by the network device 102, where the first indication information is used to indicate the third reference signal resource;

[0165] B. determining a reference signal resource having the smallest reference signal resource identifier among the multiple reference signal resources as the third reference signal resource;

[0166] C. Determine a reference signal resource corresponding to a first reference signal as a third reference signal resource, wherein the first reference signal is the earliest arriving channel state information reference signal.

[0167] In some embodiments, the time difference may include: the time interval between time domain positions corresponding to different CSI-RSs, or may not include the time interval between time domain positions corresponding to different CSI-RSs.

[0168] For example, the time difference includes the time interval between the time domain positions corresponding to different CSI-RSs, which can be understood as follows: two CSI-RSs, such as CSI-RS#1 and CSI-RS#2, have corresponding resources CSI-RS#Resource1 and CSI-RS#Resource2, respectively. The time domain position of CSI-RS#Resource1 is symbol#0 of slot#1, and the time domain position of CSI-RS#Resource2 is symbol#0 of slot#2. It is assumed that the terminal measures the arrival time of CSI-RS#1 as t1 and the arrival time of CSI-RS#2 as t2.

[0169] It can be understood that time t1 is a period of time after symbol#0 of slot#1, and time t2 is a period of time after symbol#0 of slot#2, so the time difference is t2-t1. The period t2-t1 not only includes the time interval between symbol#0 of slot#2 and symbol#0 of slot#1, but also includes the difference in transmission time between the two RSs from their respective TRPs to the UE.

[0170] Exemplarily, the time difference does not include the time interval between the time domain positions corresponding to different CSI-RSs, which can be understood as follows: ignoring the slot position and symbol position corresponding to the CSI-RS resources corresponding to different CSI-RSs (or assuming that the slots and symbols corresponding to different CSI-RSs are the same), two CSI-RSs, such as CSI-RS#1 and CSI-RS#2, have corresponding resources CSI-RS#Resource1 and CSI-RS#Resource2, respectively. The time domain position of CSI-RS#Resource1 is symbol#0 of slot#1, and the time domain position of CSI-RS#Resource2 is symbol#0 of slot#2. It is assumed that the arrival time of CSI-RS#1 measured by the terminal is t1, and the arrival time of CSI-RS#2 is t2.

[0171] It can be understood that time t1 is the period after symbol#0 of slot#1, and time t2 is the period after symbol#0 of slot#2. Therefore, the period t2-t1 includes not only the time interval between symbol#0 of slot#2 and symbol#0 of slot#1, but also the difference in transmission time between the two RSs from their respective TRPs to the UE. If the time difference does not include the time interval between the time domain positions of different CSI-RSs, then the time difference is t2-t1 minus the time interval between symbol#0 of slot#2 and symbol#0 of slot#1.

[0172] In some embodiments, the time interval between time domains corresponding to different CSI-RSs may be one or more of the following:

[0173] Slot intervals corresponding to different CSI-RS;

[0174] Symbol intervals corresponding to different CSI-RSs.

[0175] In some embodiments, the value of the time difference satisfies the following conditions: greater than or equal to 1 slot, and / or greater than or equal to 1 symbol.

[0176] Exemplarily, when the time difference includes the time interval between time domains corresponding to different CSI-RSs, the time difference may be greater than or equal to one slot and / or greater than or equal to one symbol.

[0177] In some embodiments, the value of the time difference is less than one symbol.

[0178] Exemplarily, when the time difference does not include the time interval between time domains corresponding to different CSI-RSs, the time difference may be less than 1 symbol.

[0179] In some embodiments, the value of the time difference can be a positive number or a negative number.

[0180] Exemplarily, when the reference signal on the third reference signal resource is not the earliest arriving reference signal, the time difference may be a negative value.

[0181] In some embodiments, when the time difference does not include the time interval between time domain positions corresponding to different CSI-RSs, factors affecting the time difference include at least one of the following:

[0182] The location of the TRP corresponding to different CSI-RS;

[0183] Propagation paths corresponding to different CSI-RS.

[0184] It is understandable that the CSI-RS of different TRPs arrive at the terminal at different times. For example, the farther the TRP is from the terminal, the later the corresponding CSI-RS arrives at the terminal. Therefore, the time difference can represent the location difference of different TRPs.

[0185] Similarly, the time it takes for the CSI-RS corresponding to different propagation paths to reach the terminal is also different. Therefore, the time difference can represent the different propagation paths of the CSI-RS.

[0186] It should be noted that when the time interval between the time domains corresponding to different CSI-RSs is 0 (for example, the time slot interval corresponding to different CSI-RSs is 0, or the symbol interval corresponding to different CSI-RSs is 0), it can be regarded as a case where the time difference does not include the time interval between the time domain positions corresponding to different CSI-RSs, and the time difference is expressed in the above manner.

[0187] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0188] In some embodiments, terms such as "frame", "radio frame", "subframe", "slot", "sub-slot", "mini-slot", "symbol", "symbol", and "transmission time interval (TTI)" can be used interchangeably.

[0189] Step S2104: Terminal 101 reports first channel state information.

[0190] In some embodiments, terminal 101 sends first channel state information.

[0191] In some embodiments, terminal 101 sends first channel state information to network device 102 .

[0192] In some embodiments, the terminal 101 reports the first channel state information, including at least one of the following:

[0193] Reporting time difference information; reporting code points, wherein a first mapping relationship exists between the code points and the time difference information.

[0194] Exemplarily, the terminal 101 may directly report the time difference through the first channel state information, and / or report the code point through the first channel state information. Since there is a correspondence between the code point and the time difference value, the time difference may be indirectly reported.

[0195] In some embodiments, the terminal reports the first channel state information, including at least one of the following: a third reference signal resource identifier, a second reference signal resource identifier.

[0196] Optionally, the first mapping relationship is configured by the network device 102 .

[0197] In some embodiments, the first mapping relationship is configured by the network device 102 based on at least one of the following:

[0198] Based on cyclic prefix (CP) configuration; or based on subcarrier spacing (SCS) configuration.

[0199] Optionally, different SCSs correspond to different first mapping relationships.

[0200] Optionally, different CP lengths correspond to different first mapping relationships.

[0201] For example, when the SCS is a kHz, the time difference corresponding to code point #0 is 1. Based on this, we can obtain a first mapping relationship between the SCS of a kHz and code point #0, assuming it is "f(a)". When the SCS is b kHz, the time difference corresponding to code point #0 is 2. Based on this, we can obtain a first mapping relationship between the SCS of b kHz and code point #0, assuming it is "f(b)". "a" and "b" are not equal. Because the same code point #0 has different corresponding time differences under different first mapping relationships, "f(a)" and "f(b)" are different. In other words, different SCSs correspond to different first mapping relationships.

[0202] Optionally, it can be defined that the larger the SCS value is, the smaller the time difference obtained for the same code point under the first mapping relationship corresponding to the SCS is.

[0203] It is understandable that different CP lengths correspond to different first mapping relationships, and the above-mentioned SCS example list can also be viewed. To avoid repetition, it is not listed here.

[0204] Optionally, it can be defined that the larger the CP length value is, the larger the time difference value obtained for the same code point under the first mapping relationship corresponding to the CP length is.

[0205] In some embodiments, the first channel state information and other channel state information are included in different channel state information reports.

[0206] Other channel state information includes at least one of the following:

[0207] Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Rank Indicator (RI), CSI-RS Resource Indicator (CRI), Layer Indicator (LI), Layer 1 Reference Signal Received Power (L1-RSRP), Layer 1 Signal to Interference Plus Noise Ratio (L1-SINR), Doppler shift, Doppler spread, average delay, delay spread, and Time Domain Channel Properties (TDCP).

[0208] In some embodiments, the PMI includes: a first information field and a second information field, wherein the first information field includes a full-bandwidth PMI, and the second information field includes a full-bandwidth PMI or a subband PMI.

[0209] In some embodiments, the terminal 101 reports the first channel state information based on at least one of the following methods:

[0210] Based on periodic reporting, based on aperiodic reporting or based on semi-persistent reporting.

[0211] Optionally, in the case of periodic reporting, the sending time configuration may be based on Radio Resource Control (RRC) configuration.

[0212] Exemplarily, the RRC signaling may be configured as at least one of the following:

[0213] Configure a period and a starting offset value;

[0214] Configure a time interval and a starting position for sending.

[0215] Optionally, the semi-persistent sending includes at least one of the following:

[0216] Use the Medium Access Control Element (MAC CE) to activate or use the MAC CE to deactivate.

[0217] Optionally, the first channel state information is based on aperiodic reporting, including: triggered based on downlink control information (Downlink control information, DCI).

[0218] In some embodiments, the first channel state information reporting method includes at least one of the following:

[0219] Single PUCCH transmission, single PUSCH transmission, multiple PUCCH transmissions, or multiple PUSCH transmissions.

[0220] In some embodiments, the first channel state information may be reported to one TRP or multiple TRPs.

[0221] In some embodiments, the first channel state information is reported to a TRP by at least one of the following methods:

[0222] Based on a single physical uplink control channel (PUCCH) transmission and a single physical uplink shared channel (PUSCH) transmission.

[0223] It is understandable that, in the case of coherent joint transmission of multiple TRPs, the first channel state information is reported to one TRP, and the first state information can be transmitted to the corresponding network device through the TRP, so that the network device corresponding to the TRP obtains the time difference. Alternatively, the TRP transmits the first state information to the network devices corresponding to other TRPs in the multiple TRPs, so that the network devices corresponding to the other TRPs obtain the time difference.

[0224] Optionally, for reporting the first channel state information to multiple TRPs, the reporting can be performed through at least one of the following methods: multiple PUCCH transmissions or multiple PUSCH transmissions.

[0225] In some embodiments, the terms "codebook," "codeword," and "precoding matrix" may be used interchangeably. For example, a codebook may be a collection of one or more codewords / precoding matrices.

[0226] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0227] In some embodiments, terms such as "synchronization signal (SS)", "synchronization signal block (SSB)", "reference signal (RS)", "pilot", and "pilot signal" can be used interchangeably.

[0228] In some embodiments, the terms "precoding", "precoder", "weight", "precoding weight", "quasi-co-location (QCL)", "transmission configuration indication (TCI) state", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "the number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angular degree", "antenna", "antenna element", "panel" and the like can be used interchangeably.

[0229] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0230] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2104. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, step S2104 can be implemented as an independent embodiment, step S2101 + step S2102 can be implemented as an independent embodiment, step S2103 + step S2104 can be implemented as an independent embodiment, step S2101 + step S2102 + step S2103 can be implemented as an independent embodiment, and step S2101 + step S2102 + step S2103 + step S2104 can be implemented as independent embodiments, but are not limited thereto.

[0231] In some embodiments, steps S2101 and S2104 may be executed in an exchanged order or simultaneously, steps S2102 and S2103 may be executed in an exchanged order or simultaneously, and steps S2101 and S2103 may be executed in an exchanged order or simultaneously.

[0232] In some embodiments, steps S2101, S2102, and S2103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0233] In some embodiments, steps S2101, S2103, and S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0234] In some embodiments, steps S2102, S2102, and S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0235] In some embodiments, steps S2102, S2103, and S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0236] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0237] FIG3A is a flow chart of a method for reporting channel state information according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a method for reporting channel state information, and the method includes:

[0238] Step S3101: Acquire a first reference signal resource.

[0239] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0240] In some embodiments, the terminal 101 receives the first reference signal resource sent by the access network device 102, but is not limited thereto. The terminal 101 may also receive the first reference signal resource sent by other entities.

[0241] In some embodiments, terminal 101 obtains a first reference signal resource specified by a protocol.

[0242] In some embodiments, terminal 101 obtains the first reference signal resource from an upper layer(s).

[0243] In some embodiments, terminal 101 performs processing to obtain a first reference signal resource.

[0244] In some embodiments, step S3101 is omitted, and the terminal 101 autonomously implements the function indicated by the first reference signal resource, or the above function is default or acquiescent.

[0245] Step S3102: perform measurement based on the first reference signal resource.

[0246] The optional implementation of step S3102 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0247] Step S3103: Determine first channel state information.

[0248] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0249] Step S3104: Report first channel state information.

[0250] The optional implementation of step S3104 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0251] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3104. For example, step S3101 can be implemented as an independent embodiment, step S3102 can be implemented as an independent embodiment, step S3102 can be implemented as an independent embodiment, step S3104 can be implemented as an independent embodiment, step S3101 + step S3102 can be implemented as an independent embodiment, step S3103 + step S3104 can be implemented as an independent embodiment, step S3101 + step S3102 + step S3103 can be implemented as an independent embodiment, and step S3101 + step S3102 + step S3103 + step S3104 can be implemented as independent embodiments, but are not limited thereto.

[0252] In some embodiments, steps S3101 and S3104 may be executed in an exchanged order or simultaneously, steps S3102 and S3103 may be executed in an exchanged order or simultaneously, and steps S3101 and S3103 may be executed in an exchanged order or simultaneously.

[0253] In some embodiments, steps S3101, S3102, and S3103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0254] In some embodiments, steps S3101, S3103, and S3104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0255] In some embodiments, steps S2102, S2102, and S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0256] In some embodiments, steps S3102, S3103, and S3104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0257] FIG3B is a flow chart of a method for reporting channel state information according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a method for reporting channel state information, and the method includes:

[0258] Step S3201: Acquire a first reference signal resource.

[0259] The optional implementation of step S3201 can refer to the optional implementation of step S2101 in Figure 2 and step S3101 in Figure 3A, as well as other related parts of the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0260] Step S3202: perform measurement based on the first reference signal resource.

[0261] The optional implementation of step S3202 can be found in step S2102 and step S2103 of Figure 2, the optional implementation of step S3101 and step S3102 of Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0262] Step S3203: Report first channel state information.

[0263] The optional implementation of step S3203 can refer to the optional implementation of step S2104 in Figure 2, step S3104 in Figure 3A, and other related parts of the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0264] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3201 to S3203. For example, step S3201 can be implemented as an independent embodiment, step S3202 can be implemented as an independent embodiment, step S3203 can be implemented as an independent embodiment, steps S3201+S3202 can be implemented as an independent embodiment, steps S3201+S3203 can be implemented as an independent embodiment, steps S3201+S3203 can be implemented as an independent embodiment, and steps S3201+S3202+S3203 can be implemented as an independent embodiment, but are not limited thereto.

[0265] In some embodiments, steps S3202 and S3203 may be executed in an exchanged order or simultaneously, steps S3201 and S3203 may be executed in an exchanged order or simultaneously, and steps S3202 and S3203 may be executed in an exchanged order or simultaneously.

[0266] In some embodiments, steps S3201 and S3203 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0267] In some embodiments, steps S3202 and S3203 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0268] FIG3C is a flow chart of a method for reporting channel state information according to an embodiment of the present disclosure. As shown in FIG3C , the embodiment of the present disclosure relates to a method for reporting channel state information, and the method includes:

[0269] Step S3301: Acquire a first reference signal resource.

[0270] The optional implementation of step S3301 can refer to the optional implementation of step S2101 in Figure 2, the optional implementation of step S3101 in Figure 3A, the optional implementation of step S3201 in Figure 3B and other related parts of the embodiments involved in Figures 2, 3A and 3B, which will not be repeated here.

[0271] Step S3302: Perform measurement based on the first reference signal resource and report first channel state information.

[0272] The optional implementation of step S3302 can be found in steps S2102, S2103, and S2104 of Figure 2, the optional implementation of steps S3102, S3103, and S3104 of Figure 3A, the optional implementation of steps S3202 and S3203 of Figure 3B, and other related parts of the embodiments involved in Figures 2, 3A, and 3B, which will not be repeated here.

[0273] In some embodiments, the first channel state information includes time difference information, where the time difference information indicates a time difference between channel state information reference signals on different reference signal resources arriving at the terminal.

[0274] In some embodiments, the first reference signal resource includes a channel measurement resource, and the channel measurement resource includes multiple reference signal resources; the time difference information indicates the time difference between the reference signals on the second reference signal resource and the third reference signal resource arriving at the terminal; wherein the third reference signal resource is one of the multiple reference signal resources, and the second reference signal resource is other reference signal resources among the multiple reference signal resources that are different from the third reference signal resource.

[0275] In some embodiments, the third reference signal resource is determined in at least one of the following ways: based on first indication information sent by the network device, the third reference signal resource is determined among multiple reference signal resources, the first indication information is used to indicate the third reference signal resource; the reference signal resource with the smallest reference signal resource identifier among the multiple reference signal resources is determined as the third reference signal resource; the reference signal resource corresponding to the first reference signal is determined as the third reference signal resource, wherein the first reference signal is the earliest arriving channel state information reference signal.

[0276] In some embodiments, the time difference includes: the time interval between the time domain positions corresponding to different channel state information reference signals, wherein the time domain position includes at least one of the following: time slot position and symbol position; or the time difference does not include the time interval between the time domain positions corresponding to different channel state information reference signals.

[0277] In some embodiments, reporting the first channel state information includes at least one of the following: reporting time difference information; reporting code points, and there is a first mapping relationship between the code points and the time difference information.

[0278] In some embodiments, the method further includes: receiving second indication information sent by the network device, where the second indication information is used to indicate the first mapping relationship.

[0279] In some embodiments, the first mapping relationship is based on at least one of the following configurations: based on a cyclic prefix length configuration, wherein different cyclic prefix lengths correspond to different first mapping relationships; based on an SCS configuration, wherein different subcarrier spacings correspond to different first mapping relationships.

[0280] In some embodiments, the first channel state information and other channel state information are included in different channel state information reports, and the other channel state information includes at least one of the following: CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, Doppler shift, Doppler spread, average delay, delay spread or TDCP.

[0281] In some embodiments, the method further includes: receiving channel state information reporting configuration information sent by a network device, where the channel state information reporting configuration information is used to configure the first channel state information to include the time difference information.

[0282] In some embodiments, the first channel state information is reported based on at least one of the following methods: based on periodic reporting, based on aperiodic reporting, or based on semi-persistent reporting.

[0283] In some embodiments, the first channel state information reporting method includes at least one of the following: single PUCCH transmission; single PUSCH transmission; multiple PUCCH transmissions; multiple PUSCH transmissions.

[0284] In some embodiments, the first channel state information further includes: a third reference signal resource identifier.

[0285] In some embodiments, the first channel state information further includes: a second reference signal resource identifier; the second reference signal resource identifier has a one-to-one correspondence with the time difference. In an embodiment of the present disclosure, step S3301 can be combined with steps S3102-S3103 of Figure 3A, and step S3301 can be combined with step S3202 of Figure 3B.

[0286] FIG4 is a flow chart of a method for reporting channel state information according to an embodiment of the present disclosure. As shown in FIG4 , the embodiment of the present disclosure relates to a method for reporting channel state information, and the method includes:

[0287] Step S4101: Send configuration information of a first reference signal resource.

[0288] The optional implementation of step S4101 can be found in the optional implementation of step S2101 in Figure 2, step S3101 in Figure 3A, step S2101 in Figure 3B, step S3301 in Figure 3C, and other related parts in the embodiments involved in Figures 2, 3A, 3B and 3C, which will not be repeated here.

[0289] Step S4102: Acquire first channel state information.

[0290] The optional implementation of step S4102 can be found in the optional implementation of step S2104 in Figure 2, step S3104 in Figure 3A, step S2103 in Figure 3B, step S3302 in Figure 3C, and other related parts in the embodiments involved in Figures 2, 3A, 3B and 3C, which will not be repeated here.

[0291] In some embodiments, configuration information of a first reference signal resource is sent, and the configuration information of the first reference signal resource is used to configure the first reference signal resource for the terminal; first channel state information is obtained, and the first channel state information is measured and reported by the terminal based on the first reference signal resource; wherein the first channel state information includes time difference information, and the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources reaching the terminal.

[0292] In some embodiments, the first channel state information is measured and reported by the terminal based on a first reference signal resource; wherein the first channel state information includes time difference information, and the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources reaching the terminal.

[0293] In some embodiments, the first reference signal resource includes a channel measurement resource, and the channel measurement resource includes multiple reference signal resources; the time difference information indicates the time difference between the reference signals on the second reference signal resource and the third reference signal resource arriving at the terminal; wherein the third reference signal resource is one of the multiple reference signal resources, and the second reference signal resource is other reference signal resources among the multiple reference signal resources that are different from the third reference signal resource.

[0294] In some embodiments, the third reference signal includes at least one of the following: a reference signal resource indicated by the first indication information sent by the network device; a reference signal resource with the smallest reference signal resource identifier among multiple reference signal resources; a reference signal resource corresponding to the first reference signal, wherein the first reference signal is the earliest arriving channel state information reference signal.

[0295] In some embodiments, the time interval between time domain positions corresponding to different channel state information reference signals, wherein the time domain position includes at least one of the following: time slot position and symbol position; or the time difference does not include the time interval between time domain positions corresponding to different channel state information reference signals.

[0296] In some embodiments, the network device obtains the first channel state information in at least one of the following ways: obtaining time difference information; obtaining a code point, and a first mapping relationship exists between the code point and the time difference information.

[0297] In some embodiments, the method further includes: sending second indication information, where the second indication information is used to indicate the first mapping relationship.

[0298] In some embodiments, the first mapping relationship is based on at least one of the following configurations: based on a cyclic prefix length configuration, wherein different cyclic prefix lengths correspond to different first mapping relationships; based on an SCS configuration, wherein different subcarrier spacings correspond to different first mapping relationships.

[0299] In some embodiments, the first channel state information and other channel state information are included in different channel state information reports, and the other channel state information includes at least one of the following: CQI, PMI, RI, CRI, LI, L1-RSRP, L1-SINR, Doppler shift, Doppler spread, average delay, delay spread or TDCP.

[0300] In some embodiments, the method further includes: sending channel state information reporting configuration information, where the channel state information reporting configuration information is used to configure the first channel state information to include the time difference information.

[0301] In some embodiments, the first channel state information is acquired by the network device based on at least one of the following methods: based on periodic acquisition, based on aperiodic acquisition, or based on semi-persistent acquisition.

[0302] In some embodiments, the first channel state information is acquired by the network device in at least one of the following ways: single PUCCH transmission; single PUSCH transmission; multiple PUCCH transmissions; multiple PUSCH transmissions.

[0303] In some embodiments, the first channel state information further includes: a third reference signal resource identifier.

[0304] In some embodiments, the first channel state information further includes: a second reference signal resource identifier; the second reference signal resource identifier has a one-to-one correspondence with the time difference.

[0305] FIG5 is an interactive diagram of a channel state information reporting method according to an embodiment of the present disclosure. As shown in FIG5 , the embodiment of the present disclosure relates to a channel state information reporting method, the method comprising:

[0306] Step S5101: The network device 102 sends configuration information of a first reference signal resource.

[0307] In some embodiments, the configuration information of the first reference signal resource is used to configure the first reference signal resource for the terminal.

[0308] The optional implementation of step S5101 can be found in the optional implementation of step S2101 in Figure 2, step S3101 in Figure 3A, step S2101 in Figure 3B, step S3301 in Figure 3C, and step S4101 in Figure 4, as well as other related parts in the embodiments involved in Figures 2, 3A, 3B, 3C and 4, which will not be repeated here.

[0309] Step S5102: Terminal 101 performs measurement based on the first reference signal resource.

[0310] The optional implementation of step S5102 can be found in the optional implementation of step S2102 in Figure 2, step S3102 in Figure 3A, step S3202 in Figure 3B, step S3302 in Figure 3C, and other related parts in the embodiments involved in Figures 2, 3A, 3B and 3C, which will not be repeated here.

[0311] Step S5103: Terminal 101 reports first channel state information.

[0312] For the optional implementation of step S5103, please refer to step S2103 of Figure 2, step S2104 of Figure 3A, step S3103 of step S3104 of Figure 3B, the optional implementation of step S3302 of Figure 3C, step S4102 of Figure 4, and other related parts in the embodiments involved in Figures 2, 3A, 3B, 3C and 4, which will not be repeated here.

[0313] In some embodiments, the above method may include the method described in the above embodiments of the communication system side, terminal side, network device side, etc., which will not be repeated here.

[0314] In an embodiment of the present disclosure, a channel state information reporting method is also provided. When there is no ideal synchronization between multiple TRPs and no ideal return link, in order to enable the transmission of multiple TRPs to reach the UE side at the same time or reach the UE side within the CP range, it is proposed that the terminal reports the transmission arrival time difference of different TRPs, thereby ensuring the performance of joint transmission of multiple TRPs.

[0315] In some embodiments, a terminal receives a reference signal resource configuration, performs measurement based on the reference signal resource configuration, and reports first channel state information, where the first channel state information includes a time difference between different channel state information reference signal resources (CSI-RS resources).

[0316] In some embodiments, the reference signal resource includes a channel measurement resource (CMR), and a CMR includes multiple CSI-RS resources.

[0317] In some embodiments, a reference CSI-RS resource is determined based on at least one of the following:

[0318] Based on base station instructions; or based on terminal reporting.

[0319] Optionally, based on the base station indication may include at least one of the following: based on a display indication, or based on an implicit indication.

[0320] Exemplarily, based on the display indication, the base station may provide which one of the multiple CSI-RS resources included in the CMR.

[0321] Based on implicit indication, the one with the smallest identifier in the CSI-RS resource may be indicated.

[0322] Optionally, based on the terminal report, the terminal may measure and determine that the CSI-RS resource corresponding to the earliest arriving CSI-RS is the Reference resource (ie, the reference CSI-RS resource).

[0323] In some embodiments, after determining the Reference CSI-RS resource, the difference between the RS arrival time on other CSI-RS resources and the RS arrival time on the Reference CSI-RS resource is reported.

[0324] In some embodiments, the arrival time difference is defined as the time difference between two different RSs arriving at the terminal side.

[0325] Optionally, the time difference is defined based on at least one of the following:

[0326] The arrival time can take into account the slot and symbol positions corresponding to the two RSs, that is, the arrival time should be affected by the difference in slot and symbol positions corresponding to the CSI-RS resource; or

[0327] The arrival time does not need to consider the slot and symbol positions corresponding to the two RSs. That is, it is assumed that the slot and symbol positions corresponding to the two RSs are the same, and only includes the arrival time difference caused by the different positions or propagation paths of the two TRPs.

[0328] In some embodiments, the time difference is reported or a code point is reported, and the code point has a corresponding relationship with the time difference value.

[0329] Optionally, the base station configures and reports a correspondence between the codepoint and the time difference value.

[0330] Optionally, for different CP lengths and / or different SCSs, the correspondence between codepoint and time difference value is different.

[0331] For example, the time difference value 1 corresponding to codepoint #0 when the SCS is 15 kHz is twice the time difference value 2 corresponding to codepoint #0 when the SCS is 30 kHz.

[0332] It is understandable that when the CP is larger, the time difference value corresponding to the same codepoint is also larger.

[0333] In some embodiments, the first channel state is configured and reported based on a channel state feedback link configuration (CSI feedback framework), and is configured to report a time difference.

[0334] Optionally, the first channel state and at least one of the following are included in different channel state information reports (reported independently): channel quality indication CQI; precoding matrix indication PMI; rank indication RI; channel state information reference signal resource indication CRI; layer indication LI; layer 1 reference signal received power L1-RSRP; layer 1 signal to interference and noise ratio L1-SINR; Doppler shift; Doppler spread; average delay; delay spread; time domain channel properties TDCP.

[0335] Optionally, the PMI includes at least one of the following: an X1 information field, or an X2 information field.

[0336] The X1 information field includes the full-bandwidth PMI, which includes at least one of the following:

[0337] The first codebook index (Codebook index i1).

[0338] The first codebook index includes at least one of the following:

[0339] i1 includes i1,1 (related to N1 and O1, N1 is the number of antenna ports in the first dimension, O1 is the number of oversampling or beams in the first dimension) and i1,2 (related to N2 and O2, N2 is the number of antenna ports in the second dimension, O2 is the number of oversampling or beams in the second dimension);

[0340] i1 includes i1,1 (related to N1 and O1, N1 is the number of antenna ports in the first dimension, O1 is the number of oversampling or beams in the first dimension), i1,2 (related to N2 and O2, N2 is the number of antenna ports in the second dimension, O2 is the number of oversampling or beams in the second dimension), and i1,3 (for the case when RANK>1, that is, the number of layers is greater than 1, mainly used to determine the antenna ports between different layers);

[0341] i1 includes i1,1, i1,2 and i1,4 (for different panels), wherein i1,4 includes at least one of the following i1,4,1, i1,4,2 and i1,4,3, and i1,4,1, i1,4,2 and i1,4,3 correspond to different panels or finer phase adjustments respectively.

[0342] Optionally, the X2 information field includes the full-bandwidth PMI or each subband PMI, including one of the following:

[0343] i2,i2,0,i2,1,i2,2.

[0344] In some embodiments, the time difference can be reported to one TRP or to two TRPs, and the two TRPs can be reported based on the MTRP PUCCH / PUSCH transmission mechanism.

[0345] In some embodiments, the terminal receives CSI report configuration information and determines a report quantity as a time difference.

[0346] In some embodiments, the reporting time of the first channel state information is configured as follows:

[0347] Reporting can be performed periodically, aperiodically, or semi-persistently.

[0348] Optionally, the periodic transmission time configuration may be based on RRC signaling configuration, and the configuration method is as follows: configuring a period and a starting offset value, or configuring a time interval and a starting transmission position.

[0349] Optionally, based on semi-persistent transmission, in addition to RRC signaling configuration, MAC CE activation or deactivation is also required.

[0350] It is understandable that, based on the RRC signaling configuration as above, the MAC CE may activate the first channel state information to start sending. The MAC CE may indicate the ID of the configuration parameter of the first channel state information.

[0351] Optionally, the first channel state information is fed back aperiodically and needs to be triggered by downlink control information DCI.

[0352] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0353] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0354] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be implemented in the form of software called by the processor, or in the form of hardware circuits, or in part by software called by the processor, and the rest by hardware circuits.

[0355] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0356] Figure 6A is a schematic diagram of the structure of the terminal proposed in an embodiment of the present disclosure. As shown in Figure 6A, the terminal 6100 may include: at least one of a transceiver module 6101, a processing module 6102, etc. In some embodiments, the transceiver module 6101 is used to obtain a first reference signal resource, wherein the first channel state information includes time difference information, and the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources arriving at the terminal. Optionally, the transceiver module 6101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods (for example, step S2101, step S2104, but not limited thereto), which are not described in detail here. Optionally, the processing module 6102 is used to perform at least one of the other steps (for example, step S2102, step S2103, but not limited thereto) performed by the terminal 101 in any of the above methods, which are not described in detail here.

[0357] Figure 6B is a structural diagram of a network device proposed in an embodiment of the present disclosure. As shown in Figure 6B, the network device 6200 may include: a transceiver module 6201. In some embodiments, the above-mentioned transceiver module 6101 is used to send configuration information of the first reference signal resource, and is also used to obtain the first channel state information, which is measured and reported by the terminal based on the first reference signal resource, wherein the first channel state information includes time difference information, and the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources arriving at the terminal. Optionally, the above-mentioned transceiver module 6201 is used to perform at least one of the communication steps such as sending and / or receiving (for example, step S2101, step S2104, but not limited to this) performed by the network device 102 in any of the above methods, which will not be repeated here.

[0358] Figure 7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0359] As shown in Figure 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 7100 is used to perform any of the above methods. Optionally, one or more processors 7101 are used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0360] In some embodiments, the communication device 7100 further includes one or more transceivers 7102. When the communication device 7100 includes one or more transceivers 7102, the transceiver 7102 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2102 and step S2103, but not limited thereto), and the processor 7101 performs at least one of the other steps (for example, step S2101, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0361] In some embodiments, the communication device 7100 further includes one or more memories 7103 for storing data. Alternatively, all or part of the memories 7103 may be located outside the communication device 7100. In alternative embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuits 7104 are connected to the memories 7103 and may be configured to receive data from the memories 7103 or other devices, or to send data to the memories 7103 or other devices. For example, the interface circuits 7104 may read data stored in the memories 7103 and send the data to the processor 7101.

[0362] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0363] 7B is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0364] The chip 7200 includes one or more processors 7201. The chip 7200 is configured to execute any of the above methods.

[0365] In some embodiments, chip 7200 further includes one or more interface circuits 7202. Alternatively, terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 7200 further includes one or more memories 7203 for storing data. Alternatively, all or part of memory 7203 may be located external to chip 7200. Optionally, interface circuit 7202 is connected to memory 7203 and may be used to receive data from memory 7203 or other devices, or may be used to send data to memory 7203 or other devices. For example, interface circuit 7202 may read data stored in memory 7203 and send the data to processor 7201.

[0366] In some embodiments, the interface circuit 7202 performs at least one of the communication steps (e.g., step S2102 and step S2103, but not limited thereto) of the aforementioned method. The interface circuit 7202 performing the communication steps (e.g., step S2102 and step S2103, but not limited thereto) of the aforementioned method means, for example, that the interface circuit 7202 performs data exchange between the processor 7201, chip 7200, memory 7203, or a transceiver device. In some embodiments, the processor 7201 performs at least one of the other steps (e.g., step S2101, but not limited thereto).

[0367] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0368] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0369] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0370] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A method for reporting channel state information, applied to a terminal, characterized in that, the method includes: obtaining a first reference signal resource; measuring based on the first reference signal resource to obtain first channel state information; and reporting the first channel state information; wherein, the first channel state information includes time difference information, and the time difference information indicates the time difference between the channel state information reference signals on different reference signal resources arriving at the terminal.

2. The method according to claim 1, characterized in that, the first reference signal resource includes a channel measurement resource, and the channel measurement resource includes a plurality of reference signal resources; the time difference information indicates the time difference between the reference signals on the second reference signal resource and the third reference signal resource arriving at the terminal; wherein, the third reference signal resource is one of the plurality of reference signal resources, and the second reference signal resource is another reference signal resource different from the third reference signal resource among the plurality of reference signal resources.

3. The method according to claim 2, characterized in that, the third reference signal resource is determined by at least one of the following methods: determining the third reference signal resource from the plurality of reference signal resources based on the first indication information sent by the network device, and the first indication information is used to indicate the third reference signal resource; determining the reference signal resource with the smallest reference signal resource identifier among the plurality of reference signal resources as the third reference signal resource; determining the reference signal resource corresponding to the first reference signal as the third reference signal resource, wherein the first reference signal is the earliest arriving channel state information reference signal.

4. The method according to any one of claims 1 to 3, characterized in that, the time difference includes: the time interval between the time domain positions corresponding to different channel state information reference signals, wherein the time domain position includes at least one of the following: time slot position and symbol position; or the time difference does not include the time interval between the time domain positions corresponding to different channel state information reference signals.

5. The method according to any one of claims 1 to 4, characterized in that, reporting the first channel state information includes at least one of the following: reporting the time difference information; reporting a code point, and there is a first mapping relationship between the code point and the time difference information.

6. The method according to claim 5, characterized in that, the method further includes: receiving the second indication information sent by the network device, and the second indication information is used to indicate the first mapping relationship.

7. The method according to claim 6, characterized in that, the first mapping relationship is configured based on at least one of the following: configured based on the cyclic prefix length, wherein different cyclic prefix lengths correspond to different first mapping relationships; configured based on the subcarrier spacing SCS, wherein different subcarrier spacings correspond to different first mapping relationships.

8. The method according to any one of claims 1 to 7, characterized in that, The first channel state information and other channel state information are included in different channel state information reports, and the other channel state information includes at least one of the following: Channel Quality Indicator (CQI); Precoding Matrix Indicator (PMI); Rank Indicator (RI); Channel State Information Reference Signal Resource Indicator (CRI); Layer Indicator (LI); Layer 1 Reference Signal Received Power (L1-RSRP); Layer 1 Signal-to-Interference-plus-Noise Ratio (L1-SINR); Doppler shift; Doppler spread; Average delay; Delay spread; Time Domain Channel Property (TDCP).

9. The method according to any one of claims 1 to 8, characterized in that the method further includes: receiving channel state information reporting configuration information sent by a network device, where the channel state information reporting configuration information is used to configure the time difference information to be included in the first channel state information.

10. The method according to any one of claims 1 to 9, characterized in that the first channel state information is reported based on at least one of the following methods: Based on periodic reporting, based on aperiodic reporting, or based on semi-persistent reporting.

11. The method according to any one of claims 1 to 10, characterized in that the first channel state information reporting method includes at least one of the following: Single PUCCH transmission; Single PUSCH transmission; Multiple PUCCH transmissions; Multiple PUSCH transmissions.

12. The method according to claim 2 or 3, characterized in that the first channel state information further includes: a third reference signal resource identifier.

13. The method according to claim 2, 3 or 12, characterized in that the first channel state information further includes: a second reference signal resource identifier; The second reference signal resource identifier has a one-to-one correspondence with the time difference.

14. A channel state information reporting method applied to a network device, characterized in that the method includes: sending configuration information of a first reference signal resource, where the configuration information of the first reference signal resource is used to configure a first reference signal resource for a terminal; acquiring first channel state information, where the first channel state information is measured and reported by the terminal based on the first reference signal resource; wherein the first channel state information includes time difference information, and the time difference information indicates the time difference of the channel state information reference signals arriving at the terminal on different reference signal resources.

15. The method according to claim 14, characterized in that the first reference signal resource includes a channel measurement resource, and the channel measurement resource includes multiple reference signal resources; the time difference information indicates the time difference of the reference signals on a second reference signal resource and a third reference signal resource arriving at the terminal; wherein the third reference signal resource is one of the multiple reference signal resources, and the second reference signal resource is another reference signal resource different from the third reference signal resource among the multiple reference signal resources.

16. The method according to claim 15, characterized in that the third reference signal resource includes at least one of the following: The reference signal resource indicated by the first indication information sent by the network device; The reference signal resource with the smallest reference signal resource identifier among multiple reference signal resources; The reference signal resource corresponding to the first reference signal, where the first reference signal is the earliest arriving channel state information reference signal.

17. The method according to any one of claims 14 to 16, characterized in that, the time difference includes: the time interval between the time domain positions corresponding to different channel state information reference signals, where the time domain position includes at least one of the following: time slot position and symbol position; or the time difference does not include the time interval between the time domain positions corresponding to different channel state information reference signals.

18. The method according to any one of claims 14 to 17, characterized in that, the network device obtains the first channel state information by using at least one of the following methods: Obtain the time difference information; Obtain a code point, where there is a first mapping relationship between the code point and the time difference information.

19. The method according to claim 18, characterized in that, the method further includes: Send a second indication information, where the second indication information is used to indicate the first mapping relationship.

20. The method according to claim 19, characterized in that, the first mapping relationship is configured based on at least one of the following: Based on the cyclic prefix length configuration, where different cyclic prefix lengths correspond to different first mapping relationships; Based on the subcarrier spacing SCS configuration, where different subcarrier spacings correspond to different first mapping relationships.

21. The method according to any one of claims 14 to 20, characterized in that, the first channel state information and other channel state information are included in different channel state information reports, and the other channel state information includes at least one of the following: Channel Quality Indicator CQI; Precoding Matrix Indicator PMI; Rank Indicator RI; Channel State Information Reference Signal Resource Indicator CRI; Layer Indicator LI; Layer 1 Reference Signal Received Power L1-RSRP; Layer 1 Signal-to-Interference-plus-Noise Ratio L1-SINR; Doppler shift; Doppler spread; Average delay; Delay spread; Time Domain Channel Property TDCP.

22. The method according to any one of claims 14 to 21, characterized in that, the method further includes: Send channel state information reporting configuration information, where the channel state information reporting configuration information is used to configure the time difference information to be included in the first channel state information.

23. The method according to any one of claims 14 to 22, characterized in that, the first channel state information is obtained by the network device based on at least one of the following methods: Based on periodic acquisition, based on aperiodic acquisition, or based on semi-persistent acquisition.

24. The method according to any one of claims 14 to 23, characterized in that, the first channel state information is obtained by the network device by using at least one of the following methods: Single PUCCH transmission; Single PUSCH transmission; Multiple PUCCH transmissions; Multiple PUSCH transmissions.

25. The method according to claim 15 or 16, characterized in that, the first channel state information further includes: a third reference signal resource identifier.

26. The method according to claim 15, 16 or 25, characterized in that, the first channel state information further includes: a second reference signal resource identifier; the second reference signal resource identifier has a one-to-one correspondence with the time difference.

27. A method for reporting channel state information, characterized in that, the method includes: a network device sends configuration information of a first reference signal resource, and the configuration information of the first reference signal resource is used to configure the first reference signal resource for a terminal; the terminal measures based on the first reference signal resource to obtain first channel state information; and reports the first channel state information; wherein, the first channel state information includes time difference information, and the time difference information indicates the time difference of the channel state information reference signals on different reference signal resources arriving at the terminal; the network device obtains the first channel state information.

28. A terminal, characterized in that, comprising: a transceiver module, configured to obtain a first reference signal resource; a processing module, configured to measure based on the first reference signal resource to obtain first channel state information; and report the first channel state information; wherein, the first channel state information includes time difference information, and the time difference information indicates the time difference of the channel state information reference signals on different reference signal resources arriving at the terminal.

29. A network device, characterized in that, comprising: a transceiver module, configured to send configuration information of a first reference signal resource, and the configuration information of the first reference signal resource is used to configure the first reference signal resource for a terminal; the transceiver module is further configured to obtain first channel state information, and the first channel state information is measured and reported by the terminal based on the first reference signal resource; wherein, the first channel state information includes time difference information, and the time difference information indicates the time difference of the channel state information reference signals on different reference signal resources arriving at the terminal.

30. A terminal, characterized in that, comprising: one or more processors; wherein, the processor is configured to execute the channel state information reporting method according to any one of claims 1 to 13.

31. A network device, characterized in that, comprising: one or more processors; wherein, the processor is configured to execute the channel state information reporting method according to any one of claims 14 to 26.

32. A communication system, characterized in that, comprising a terminal and a network device, wherein, the terminal is configured to implement the channel state information reporting method according to any one of claims 1 to 11, and the network device is configured to implement the channel state information reporting method according to any one of claims 13 to 24.

33. A storage medium, the storage medium stores instructions, characterized in that, when the instructions run on a communication device, the communication device is caused to execute the channel state information reporting method according to any one of claims 1 to 13 or 14 to 26.

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