Communication method, communication device, communication system, storage medium, and program product

Abstract

This disclosure relates to communication methods, communication devices, communication systems, storage media, and program products. A communication method, executed by a terminal, includes sending first information. A communication method, executed by a network device, includes receiving first information. The first information is used to instruct the terminal to support at least one of the following features: early channel state information (CSI) triggering, early channel state information reference signal (CSI-RS) triggering, and early sounding reference signal (SRS) triggering. This disclosure, by instructing the terminal to support early SRS / CSI-RS / CSI triggering, enables the terminal to transmit data as quickly as possible based on accurate CSI, thereby improving throughput.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a communication method, a communication device, a communication system, a storage medium and a program product. BACKGROUND

[0002] In related communication technologies, data transmission is performed based on channel state information (CSI). The CSI is mainly obtained by terminals in a connected state. SUMMARY

[0003] Embodiments of the present disclosure are used to solve the problem of accuracy of data transmission based on CSI.

[0004] Embodiments of the present disclosure provide a communication method, a communication device, a communication system, a storage medium and a program product.

[0005] According to a first aspect of embodiments of the present disclosure, a communication method is provided, executed by a terminal, and the method comprises: sending first information, the first information being used to indicate that the terminal supports at least one of the following features: early triggering of channel state information (CSI), early triggering of channel state information reference signal (CSI-RS), and early triggering of sounding reference signal (SRS).

[0006] According to a second aspect of embodiments of the present disclosure, a communication method is provided, executed by a network device, and the method comprises: receiving first information, the first information being used to indicate that the terminal supports at least one of the following features: early triggering of channel state information (CSI), early triggering of channel state information reference signal (CSI-RS), and early triggering of sounding reference signal (SRS).

[0007] According to a third aspect of embodiments of the present disclosure, a communication device is provided, configured to execute the communication method of any one of the first aspect and the second aspect.

[0008] According to a fourth aspect of embodiments of the present disclosure, a communication system is provided, comprising a terminal and a network device, wherein the terminal is configured to implement the communication method of the first aspect, and the network device is configured to implement the communication method of the second aspect.

[0009] According to a fifth aspect of embodiments of the present disclosure, a storage medium is provided, and the storage medium stores instructions, when the instructions are executed on a communication device, the communication device executes the communication method of the first aspect and any one of the first aspect, or the second aspect and any one of the second aspect.

[0010] According to a sixth aspect of the present disclosure, a program product is provided, comprising at least one of a program and instructions, wherein the program and instructions, when executed by a communication device, implement the communication method described in any one of the first and second aspects.

[0011] This disclosure improves throughput by instructing the terminal to support early SRS / CSI-RS / CSI triggering, enabling the terminal to transmit data as quickly as possible based on accurate CSI. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0013] Figure 1 This is an exemplary schematic diagram of the architecture of a communication system provided according to embodiments of this disclosure.

[0014] Figure 2 This is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

[0015] Figure 3 This is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

[0016] Figure 4A This is a schematic diagram of the structure of the first device proposed in the embodiments of this disclosure.

[0017] Figure 4B This is a schematic diagram of the structure of the second device proposed in the embodiments of this disclosure.

[0018] Figure 5A This is a schematic diagram of the structure of the communication device proposed in the embodiments of this disclosure.

[0019] Figure 5B This is a schematic diagram of the chip structure proposed in the embodiments of this disclosure. Detailed Implementation

[0020] This disclosure provides communication methods, communication devices, communication systems, storage media, and program products.

[0021] In a first aspect, embodiments of this disclosure provide a communication method executed by a terminal, the method comprising: Send a first message, which is used to indicate that the terminal supports at least one of the following features: triggering of advance channel state information (CSI), triggering of advance channel state information reference signal (CSI-RS), and triggering of advance sounding reference signal (SRS).

[0022] In the above embodiments, based on at least one of the features of early CSI triggering, early CSI-RS triggering, and early SRS triggering indicated by the first information, the terminal can report the corresponding feature in advance, thereby enabling the network device to obtain the CSI in advance, and then determine the appropriate MCS, etc. to schedule data transmission, so that the terminal can transmit data as soon as possible based on the accurate CSI and improve throughput.

[0023] In conjunction with some embodiments of the first aspect, in some embodiments, the early CSI triggering includes at least one of the following features: CSI is triggered via message 4 during the random access process; CSI is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. CSI is triggered by downlink control information that includes a secondary cell hibernation indication.

[0024] In the above embodiments, the early triggering of CSI is clearly defined, which improves communication performance.

[0025] In conjunction with some embodiments of the first aspect, in some embodiments, the early triggering of the CSI-RS includes at least one of the following features: CSI-RS is triggered via message 4 during the random access process; CSI-RS is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. CSI-RS is triggered by downlink control information that includes a secondary cell hibernation indication.

[0026] In the above embodiments, the early triggering of CSI-RS is clearly defined, which improves communication performance.

[0027] In conjunction with some embodiments of the first aspect, in some embodiments, the early triggering of the SRS includes at least one of the following features: SRS is triggered via message 4 during the random access process; SRS is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. SRS is triggered by downlink control information that includes a secondary cell hibernation indication.

[0028] In the above embodiments, the early triggering of SRS is clearly defined, which improves communication performance.

[0029] In conjunction with some embodiments of the first aspect, in some embodiments, in response to the terminal supporting at least two different features, sending the first information includes: sending the first information for each of the at least two different features supported by the terminal.

[0030] In the above embodiments, instructions are given for each feature supported by each terminal to improve communication performance.

[0031] In conjunction with some embodiments of the first aspect, in some embodiments, sending the first information includes at least one of the following: The first information is sent in message 3 during the random access process; The first information is transmitted via a dedicated control channel (DCCH).

[0032] In the above embodiments, based on message 3 and DCCH sending the first information during the random access process, the appropriate sending method can be selected from multiple sending methods to improve communication performance.

[0033] In conjunction with some embodiments of the first aspect, in some embodiments, message 3 includes a Service Data Unit (SDU) of the Common Control Channel (CCCH), wherein the SDU of the CCCH includes at least one of the following: Radio Resource Control (RRC) Establishment Request; Radio Resource Control (RRC) Reconstruction Request; Radio Resource Control (RRC) Recovery Request.

[0034] In the above embodiments, the first information is sent by selecting one or more of the various SDUs in message 3, which can cover multiple stages and reflect the flexibility and accuracy of communication.

[0035] In conjunction with some embodiments of the first aspect, in some embodiments, the DCCH corresponds to bearer terminal capability information.

[0036] In the above embodiments, by sending the first information through the DCCH corresponding to the terminal capability information, the early triggering capability supported by the terminal can be determined more simply and conveniently.

[0037] In conjunction with some embodiments of the first aspect, in some embodiments, the first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS via message 4 in the random access procedure; The CSI / CSI-RS / SRS refers to the CSI / CSI-RS / SRS on the first cell, and message 4 is message 4 in the random access process corresponding to the terminal switching from idle state or inactive state to connected state on the first cell.

[0038] In the above embodiments, the early triggering of CSI / CSI-RS / SRS is realized during the process of the secondary cell switching from idle or inactive state to connected state communication.

[0039] In conjunction with some embodiments of the first aspect, in some embodiments, the first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS via a secondary cell activation media access control unit (MAC CE); the CSI / CSI-RS / SRS is a CSI / CSI-RS / SRS on a first secondary cell; the first secondary cell is a secondary cell activated via a secondary cell activation MAC CE.

[0040] In the above embodiments, when a terminal already has a connected PCell but needs to activate an SCell, the CSI / CSI-RS / SRS is triggered in advance when transmitting based on multiple serving cells.

[0041] In conjunction with some embodiments of the first aspect, in some embodiments, the first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS through downlink control information including a secondary cell sleep indication; the CSI / CSI-RS / SRS is the CSI / CSI-RS / SRS on a second secondary cell; the second secondary cell is the secondary cell corresponding to the non-sleep bandwidth portion BWP of the secondary cell sleep indication, the secondary cell sleep indication being included in the downlink control information used to indicate the secondary cell sleep indication.

[0042] In the above embodiments, when the terminal has a connected PCell and a connected SCell, but the SCell was previously in a dormancy state, the CSI / CSI-RS / SRS is triggered ahead of schedule.

[0043] In conjunction with some embodiments of the first aspect, in some embodiments, the secondary cell dormancy indication includes one or more indication bits, each indication bit corresponding to a secondary cell or a secondary cell group; the indication bit is a first value, and the active BWP corresponding to the indication bit of a secondary cell or a secondary cell group is a dormant BWP; the indication bit is a second value, and the active BWP corresponding to the indication bit of a secondary cell or a secondary cell group is a non-dormant BWP.

[0044] In the above embodiments, the indicator bit clarifies whether to enter the dormancy state.

[0045] In conjunction with some embodiments of the first aspect, in some embodiments, a second message is sent in message 3 during the random access process, wherein the second message includes at least one of the following: The maximum number of CSI-RS ports supported by the terminal; The maximum number of CSI-RS resources supported by a single resource set for the terminal; SRS patterns supported by the terminal for antenna switching; The rank supported by the terminal; The modes supported by the terminal.

[0046] In conjunction with some embodiments of the first aspect, in some embodiments, a second message is sent in message 3 during the random access process, wherein the first message indicates that the terminal supports triggering CSI-RS via message 4 during the random access process, and the second message includes the maximum number of CSI-RS ports supported by the terminal and / or the maximum number of CSI-RS resources in a resource set.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments, a second message is sent in message 3 during the random access process, wherein the first message indicates that the terminal supports triggering SRS via message 4 during the random access process, and the second message includes an SRS pattern for antenna switching supported by the terminal.

[0048] In conjunction with some embodiments of the first aspect, in some embodiments, a second message is sent in message 3 during the random access process, wherein the first message indicates that the terminal supports triggering CSI via message 4 during the random access process, and the second message includes at least one of the following: the maximum number of CSI-RS ports supported by the terminal; the maximum number of CSI-RS resources in a resource set supported by the terminal; the rank supported by the terminal; and the mode supported by the terminal.

[0049] In the above embodiments, it is clarified that when the CSI / CSI-RS / SRS is triggered in advance based on the first information indication sent in message 3 during the random access process, the communication performance is improved for the reporting of other terminal capabilities.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, the advance CSI includes at least one of the following: Precoding matrix indicates PMI; Rank indicator RI; Channel Quality Indicator (CQI); Layer indicator LI; Channel State Information Reference Signal Resource Indicator (CRI).

[0051] In the above embodiments, the advance CSI can be understood as a CSI report, which improves communication performance.

[0052] Secondly, embodiments of this disclosure provide a communication method executed by a network device, the method comprising: The terminal receives first information, which is used to indicate that the terminal supports at least one of the following features: triggering of advance channel state information (CSI), triggering of advance channel state information reference signal (CSI-RS), and triggering of advance sounding reference signal (SRS).

[0053] In the above embodiments, the network device receives at least one of the following features: early CSI triggering, early CSI-RS triggering, and early SRS triggering. This enables the network device to obtain the CSI in advance and determine a suitable MCS to schedule data transmission, so that the terminal can transmit data as quickly as possible based on the accurate CSI, thereby improving throughput.

[0054] In conjunction with some embodiments of the second aspect, in some embodiments, the early CSI triggering includes at least one of the following features: CSI is triggered via message 4 during the random access process; CSI is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. CSI is triggered by downlink control information that includes a secondary cell hibernation indication.

[0055] In conjunction with some embodiments of the second aspect, in some embodiments, the early triggering of the CSI-RS includes at least one of the following features: CSI-RS is triggered via message 4 during the random access process; CSI-RS is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. CSI-RS is triggered by downlink control information that includes a secondary cell hibernation indication.

[0056] In conjunction with some embodiments of the second aspect, in some embodiments, the early triggering of the SRS includes at least one of the following features: SRS is triggered via message 4 during the random access process; SRS is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. SRS is triggered by downlink control information that includes a secondary cell hibernation indication.

[0057] In conjunction with some embodiments of the second aspect, in some embodiments, in response to the terminal supporting at least two different features, receiving the first information includes: For each of the at least two different features supported by the terminal, the first information is received respectively.

[0058] In conjunction with some embodiments of the second aspect, in some embodiments, receiving the first information includes at least one of the following: The first information is received in message 3 during the random access process; Receive the first information carried on the dedicated control channel DCCH.

[0059] In conjunction with some embodiments of the second aspect, in some embodiments, message 3 includes a Service Data Unit (SDU) of the Common Control Channel (CCCH), wherein the SDU of the CCCH includes at least one of the following: Radio Resource Control (RRC) Establishment Request; Radio Resource Control (RRC) Reconstruction Request; Radio Resource Control (RRC) Recovery Request.

[0060] In conjunction with some embodiments of the second aspect, in some embodiments, the DCCH corresponds to bearer terminal capability information.

[0061] In conjunction with some embodiments of the second aspect, in some embodiments, the first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS via message 4 in the random access procedure; The CSI / CSI-RS / SRS refers to the CSI / CSI-RS / SRS on the first cell, and message 4 is message 4 in the random access process corresponding to the terminal switching from idle state or inactive state to connected state on the first cell.

[0062] In conjunction with some embodiments of the second aspect, in some embodiments, the first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS via the secondary cell activated media access control unit MAC CE; The CSI / CSI-RS / SRS refers to the CSI / CSI-RS / SRS on the first secondary cell; the first secondary cell is a secondary cell activated by MAC CE activation of the secondary cell.

[0063] In conjunction with some embodiments of the second aspect, in some embodiments, the first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS via downlink control information including a secondary cell sleep indication; The CSI / CSI-RS / SRS refers to the CSI / CSI-RS / SRS on the second secondary cell; the second secondary cell is the secondary cell corresponding to the non-dormant bandwidth portion (BWP) indicated by the secondary cell dormancy indicator, and the secondary cell dormancy indicator is included in the downlink control information used to indicate the secondary cell dormancy indicator.

[0064] In conjunction with some embodiments of the second aspect, in some embodiments, the secondary cell dormancy indicator includes one or more indicator bits, each indicator bit corresponding to a secondary cell or a group of secondary cells; The indicator bit is a first value, and the indicator bit corresponds to an active BWP for a secondary cell or a group of secondary cells, which is a dormant BWP. The indicator bit is the second value, and the indicator bit corresponds to an active BWP of a secondary cell or a group of secondary cells being a non-dormant BWP.

[0065] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes: receiving second information in message 3 during random access, wherein the second information includes at least one of the following: The maximum number of CSI-RS ports supported by the terminal; The maximum number of CSI-RS resources supported by a single resource set for the terminal; SRS patterns supported by the terminal for antenna switching; The rank supported by the terminal; The modes supported by the terminal.

[0066] In conjunction with some embodiments of the first aspect, in some embodiments, a second message is sent in message 3 during the random access process, wherein the first message indicates that the terminal supports triggering CSI-RS via message 4 during the random access process, and the second message includes the maximum number of CSI-RS ports supported by the terminal and / or the maximum number of CSI-RS resources in a resource set.

[0067] In conjunction with some embodiments of the first aspect, in some embodiments, a second message is sent in message 3 during the random access process, wherein the first message indicates that the terminal supports triggering SRS via message 4 during the random access process, and the second message includes an SRS pattern for antenna switching supported by the terminal.

[0068] In conjunction with some embodiments of the first aspect, in some embodiments, a second message is sent in message 3 during the random access process, wherein the first message indicates that the terminal supports triggering CSI via message 4 during the random access process, and the second message includes at least one of the following: the maximum number of CSI-RS ports supported by the terminal; the maximum number of CSI-RS resources in a resource set supported by the terminal; the rank supported by the terminal; and the mode supported by the terminal.

[0069] In conjunction with some embodiments of the second aspect, in some embodiments, the advance CSI includes at least one of the following: Precoding matrix indicates PMI; Rank indicator RI; Channel Quality Indicator (CQI); Layer indicator LI; Channel State Information Reference Signal Resource Indicator (CRI).

[0070] Thirdly, embodiments of this disclosure provide a communication device for performing the communication method of the first aspect or any of the embodiments of the first aspect, or for performing the communication method of the second aspect or any of the embodiments of the second aspect.

[0071] Fourthly, embodiments of this disclosure provide a communication system including a terminal and a network device, wherein the terminal is configured to implement the communication method of the first aspect or any of the embodiments of the first aspect, and the network device is configured to implement the communication method of the second aspect or any of the embodiments of the second aspect.

[0072] Fifthly, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the communication method of the first aspect or any of the embodiments of the first aspect, or to perform the communication method of the second aspect or any of the embodiments of the second aspect.

[0073] In a sixth aspect, embodiments of this disclosure provide a program product, including at least one of a program and instructions. When the at least one of the program and instructions is executed by a communication device, the communication device performs the communication method of the first aspect or any of the embodiments of the first aspect, or performs the communication method of the second aspect or any of the embodiments of the second aspect.

[0074] In a seventh aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described in an optional implementation of the first or second aspect.

[0075] Eighthly, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the method described according to an optional implementation of the first or second aspect above.

[0076] It is understood that the terminals, network devices, communication devices, communication systems, storage media, program products, computer programs, chips, or chip systems involved in the embodiments of this disclosure are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0077] This disclosure provides communication methods, communication devices, communication systems, storage media, and program products. In some embodiments, terms such as communication method and information processing method can be used interchangeably, as can terms such as communication device and information processing device, and terms such as information processing system and communication system.

[0078] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular 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 particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments. In all embodiments of this disclosure, unless otherwise specified or logically conflicting, the terminology and / or descriptions between the embodiments are consistent and can be mutually referenced. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0079] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0080] In this disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular or a plural expression.

[0081] In the embodiments disclosed herein, "multiple" refers to two or more.

[0082] In some embodiments, the terms “at least one of A or B, at least one of A and B”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0083] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of whether there is a branch B); in some embodiments, B (execute B regardless of whether there is a branch A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, both A and B are executed. The same applies when there are more branches such as A, B, C, etc.

[0084] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execute A regardless of whether a branch B exists); in some embodiments, B (execute B regardless of whether a branch A exists); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, and C.

[0085] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0086] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0087] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0088] In some embodiments, terms such as “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “when…”, “if…”, etc. can be used interchangeably. These descriptions all refer to the device making a corresponding action under certain objective circumstances. They do not necessarily limit the time, nor do they require the device to make a judgment action when implementing it, nor do they mean that there must be other limitations.

[0089] In some embodiments, the terms “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 lower than,” and “above” can be used interchangeably, as can the terms “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”.

[0090] In some embodiments, devices, etc., may be interpreted as physical or virtual, and their names are not limited to those described in the embodiments. Terms such as “device,” “equipment,” “circuit,” “network element,” “network function,” “network device,” “function,” “node,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” and “subject” can be used interchangeably.

[0091] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0092] 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 and / or 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," and "bandwidth part (BWP)" can be used interchangeably.

[0093] 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 subscriberstation, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, and client can be used interchangeably.

[0094] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0095] 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, core network device, or network device may also be configured to have all or some of the functions of the terminal.

[0096] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0097] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0098] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0099] Figure 1 This is a schematic diagram of a communication system architecture shown according to an embodiment of the present disclosure.

[0100] like Figure 1 As shown, the communication system 100 includes a terminal 101 and a network device 102.

[0101] In some embodiments, terminal 101 includes, for example, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home, but is not limited thereto.

[0102] In some embodiments, network device 102 may include at least one of access network device and core network device.

[0103] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), wireless backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system, but is not limited thereto.

[0104] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0105] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0106] In some embodiments, a core network device may be a single device comprising one or more network elements, or it may be multiple devices or a group of devices, each comprising all or part of the aforementioned one or more network elements. Network elements may be virtual or physical. The core network may include, for example, at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), 6G Core Network (6GCN), and Next Generation Core (NGC).

[0107] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0108] The following embodiments of this disclosure can be applied to Figure 1 The communication system 100 shown, or a part thereof, but not limited to it. Figure 1 The entities shown are illustrative; a communication system may include... Figure 1 All or part of the main body, or may include Figure 1 Other entities besides the main body, the number and form of each entity are arbitrary, each entity can be physical or virtual, the connection relationship between the entities is illustrative, the entities can be unconnected or connected, and the connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0109] The embodiments disclosed herein 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), 6th generation mobile communication system (6G), 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 (a 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, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0110] In some embodiments, such as an NR communication system, terminal 101 measures the channel state information reference signal (CSI-RS) and reports the CSI information obtained based on the CSI-RS, or terminal 101 sends a sounding reference signal (SRS), and network device 102 (e.g., a base station) measures the SRS to obtain the CSI information.

[0111] In some embodiments, the method of obtaining CSI information described above requires the terminal to be in a connected state. Therefore, for terminal 101 in an idle / inactive state, when data needs to be transmitted, the terminal must first enter a connected state before triggering CSI-RS measurement or SRS transmission for CSI. For example, CSI-RS measurement or SRS transmission for CSI can only be triggered after Radio Resource Control (RRC) connection establishment is completed. After obtaining the CSI information, network device 102 (e.g., base station) can determine a suitable modulation and coding scheme (MCS) to schedule data transmission; otherwise, network device 102 (e.g., base station) can only schedule data transmission for terminal 101 based on the default CSI. If the default CSI is poor, the terminal transmission rate is low. If the default CSI is high, the decoding success rate will be low, resulting in a low transmission rate.

[0112] If terminal 101 cannot obtain CSI in time when it first enters the connected state, it will affect the data transmission rate.

[0113] In some embodiments, during random access, terminal 101 is triggered to send SRS, receive CSI-RS, or trigger CSI reporting. However, for terminal 101 accessing the network for the first time, network device 102 does not know whether terminal 101 has the capability to trigger SRS, receive CSI-RS, or trigger CSI reporting during random access. Therefore, how terminal 101 reports its UE capability is a problem that needs to be solved. The same problem exists when a secondary cell (SCell) switches from an inactive state to an active state, and when a SCell switches from a dormant state to a non-dormant state.

[0114] In some embodiments of this disclosure, when terminal 101 enters the connected state, or when a certain SCell enters the active state, or when a SCell switches to a non-dormancy state, terminal 101 is triggered to send SRS, measure CSI-RS, or report CSI. Furthermore, terminal 101 is triggered to report its corresponding capabilities. These capabilities are the abilities that trigger terminal 101 to send SRS, measure CSI-RS, or report CSI before terminal 101 enters the connected state, or when a certain SCell enters the active state, or when a SCell switches to a non-dormancy state. In this way, after the connection is established, the terminal can quickly perform data scheduling based on accurate CSI, thereby improving the data transmission rate.

[0115] Figure 2 This is a schematic diagram illustrating a communication method interaction according to an embodiment of this disclosure. Figure 2 As shown, this disclosure relates to a communication method for a communication system 100, the method comprising: Step S2101: Terminal 101 sends the first information.

[0116] In some embodiments, network device 102 receives first information.

[0117] In some embodiments, the first information is used to instruct the terminal 101 to send SRS or measure CSI-RS or report CSI before or while entering the connected state.

[0118] In some embodiments, a CSI report triggered by terminal 101 before or simultaneously with entering the connected state can be referred to as an early CSI, or an early-triggered CSI, or an early CSI. The triggering of CSI reporting by terminal 101 before or simultaneously with entering the connected state can be referred to as early CSI triggering, or an early CSI triggering.

[0119] In some embodiments, the SRS for determining CSI that is triggered by terminal 101 before or simultaneously with entering the connected state can be referred to as an early SRS, or an early-triggered SRS, or an early SRS. Triggering terminal 101 to send SRS before or simultaneously with entering the connected state can be referred to as triggering an early SRS, an early-triggered SRS, or an early SRS trigger.

[0120] In some embodiments, CSI-RS measurements triggered by terminal 101 before or simultaneously with entering the connected state can be referred to as early CSI-RS, or early-triggered CSI-RS, or early CSI-RS. Triggering CSI-RS measurements by terminal 101 before or simultaneously with entering the connected state can be referred to as early CSI-RS triggering, early CSI-RS triggering, or early CSI-RS triggering.

[0121] In some embodiments, the first information is used to instruct the terminal 101 to send SRS or measure CSI-RS or report CSI before or while the Scell ​​enters the active state.

[0122] In some embodiments, a CSI reported by terminal 101 before or simultaneously with Scell ​​entering the active state can be referred to as an early CSI, or an early-triggered CSI, or an early CSI. Triggering terminal 101 to report CSI before or simultaneously with entering the active state can be referred to as early CSI triggering, or an early CSI triggering.

[0123] In some embodiments, the SRS sent by terminal 101 before or simultaneously with Scell ​​entering the active state to determine CSI can be referred to as an early SRS, or an early-triggered SRS, or an early SRS. Triggering terminal 101 to send SRS before entering the connected state can be referred to as the triggering of an early SRS, or an early-triggered SRS, or an early SRS trigger.

[0124] In some embodiments, CSI-RS measurements triggered by terminal 101 before or simultaneously with Scell ​​entering the active state can be referred to as early CSI-RS, or early-triggered CSI-RS, or simply early CSI-RS. Triggering CSI-RS measurements by terminal 101 before or simultaneously with Scell ​​entering the active state can be referred to as early CSI-RS triggering, early CSI-RS triggering, or simply early CSI-RS triggering.

[0125] In some embodiments, the first information is used to instruct the terminal 101 to send SRS or measure CSI-RS or report CSI before or simultaneously before the Scell ​​enters a non-dormancy state.

[0126] In some embodiments, a CSI report triggered by terminal 101 before or simultaneously with Scell ​​entering a non-dormancy state can be referred to as an early CSI, or an early-triggered CSI, or a CSI triggered at the same time as Scell ​​enters a non-dormancy state.

[0127] In some embodiments, an SRS for determining CSI triggered by terminal 101 before or simultaneously with Scell ​​entering a non-dormancy state can be referred to as an early SRS, or an early-triggered SRS. The triggering of SRS by terminal 101 before or simultaneously with Scell ​​entering a non-dormancy state can be referred to as the triggering of an early SRS, or an early-triggered SRS.

[0128] In some embodiments, a CSI-RS measurement triggered by terminal 101 before or simultaneously with Scell ​​entering a non-dormancy state can be referred to as an early CSI-RS, or an early-triggered CSI-RS, or an early CSI-RS. The triggering of CSI-RS measurement by terminal 101 before or simultaneously with Scell ​​entering a non-dormancy state can be referred to as an early CSI-RS trigger, or an early CSI-RS trigger, or an early CSI-RS trigger.

[0129] In some embodiments, the first information is used to indicate that the terminal supports at least one of the following features: A, B, and C: A. Premature CSI triggering; B. Premature triggering of CSI-RS; C. Premature SRS triggering.

[0130] In some embodiments, advance CSI may also be referred to as a CSI report, including at least one of the following: i. Precoding matrix indicator (PMI); ii. Rank indicator (RI); iii. Channel Quality Indicator (CQI); iv. Layer indicator (LI); v. Channel State Information Reference Signal Resource Indicator (CSI-RS Resource Indicator, CRI) In some embodiments, one or more of the features of “early CSI triggering”, “early CSI-RS triggering” and “early SRS triggering” supported by the terminal can be triggered based on the same or different signaling.

[0131] In some embodiments, the same or different signaling may be determined based on the stage of communication.

[0132] In some embodiments, one or more of "early CSI", "early CSI-RS", and "early SRS" can be triggered based on at least one of the following signaling: A, B, and C: A. Message 4 (Msg 4) during the random access process; B. Used for SCell activation of the Media Access Control Element (MAC CE). C. Downlink Control Information (DCI) for the SCell domancy indicator.

[0133] In some embodiments, the early CSI triggering includes at least one of the following features: a) Triggering CSI via message 4 during the random access procedure; b) Trigger CSI by activating MAC CE via SCell; c) Trigger CSI via DCI containing the SCell dormancy indicator.

[0134] In some embodiments, the early triggering of CSI-RS includes at least one of the following features: d) Trigger CSI-RS via message 4 during the random access procedure; e) Trigger CSI-RS by activating MAC CE via SCell; f) Trigger CSI-RS via DCI containing the SCell dormancy indicator.

[0135] In some embodiments, the early triggering of SRS includes at least one of the following features: g) Trigger SRS via message 4 during the random access process; h) Activate MAC CE via SCell to trigger SRS; i) Trigger SRS via DCI containing SCell dormancy indicator.

[0136] In some embodiments, any one of a) to i) above can be understood as a feature supported by terminal 101, or a capability supported.

[0137] In some embodiments, any two or more of a) to i) can be understood as different features supported by terminal 101, or different capabilities supported.

[0138] In some embodiments, terminal 101 supports at least two different features, and for each of the at least two different features supported by terminal 101, first information is sent to indicate each of the at least two different features.

[0139] In some embodiments, if the terminal supports X different features from a) to i) above, the terminal 101 may send X first messages respectively to indicate whether the X corresponding features from a) to i) are supported. Here, X is an integer greater than or equal to 1 and less than or equal to 9.

[0140] In some embodiments, X is 3.

[0141] For example, terminal 101 sends three different first messages to indicate whether “early CSI triggering”, “early CSI-RS triggering”, and “early SRS triggering” are supported, respectively.

[0142] For example, terminal 101 sends three different first messages to indicate whether “early CSI triggering” is supported: CSI is triggered by message 4 in the random access process; CSI is triggered by SCell Activated MAC CE; and CSI is triggered by DCI containing SCell dormancy indicator.

[0143] For example, terminal 101 sends three different first messages to indicate whether “early CSI-RS triggering” is supported: CSI-RS is triggered by message 4 in the random access process; CSI-RS is triggered by SCell Activated MAC CE; and CSI-RS is triggered by DCI containing SCell dormancy indicator.

[0144] For example, terminal 101 sends three different first messages to indicate whether “early SRS triggering” is supported: SRS is triggered by message 4 in the random access procedure; SRS is triggered by SCell Activated MAC CE; and SRS is triggered by DCI containing SCell dormancy indicator.

[0145] In some embodiments, the first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS through message 4 in the random access procedure, that is, triggering the feature corresponding to a) / d) / g) above, where CSI / CSI-RS / SRS is the CSI / CSI-RS / SRS on the first cell. Furthermore, message 4 is message 4 in the random access procedure corresponding to the terminal 101 switching from an idle state or inactive state to a connected state on the first cell.

[0146] For example, triggering CSI / CSI-RS / SRS through Msg 4 during the random access process is used for terminal 101 to transition from the RRC_IDLE / INACTIVE state to the RRC_connected state, that is, triggering the SRS, CSI-RS or CSI on the terminal's primary cell (PCell).

[0147] In some embodiments, the first information is used to indicate that the terminal supports SCell-activated MAC CE triggering of CSI / CSI-RS / SRS, that is, corresponding to the feature triggering described in b) / e) / h) above, where CSI / CSI-RS / SRS is the CSI / CSI-RS / SRS on the first secondary cell. The first secondary cell is a secondary cell activated by SCell-activated MAC CE.

[0148] For example, if a terminal already has a connected PCell and needs to activate an SCell to transmit based on multiple serving cells, the first information is used to instruct the terminal to support SCell activation MAC CE to trigger CSI / CSI-RS / SRS.

[0149] In some embodiments, the first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS via a DCI containing an SCell dormancy indicator, i.e., triggering the feature corresponding to c) / f) / i) above, where the CSI / CSI-RS / SRS is the CSI / CSI-RS / SRS on the second secondary cell. The second secondary cell is the secondary cell corresponding to the non-dormant bandwidth portion (BWP) indicated by the Scell ​​dormancy indicator in the DCI used to indicate the SCell dormancy indicator.

[0150] In some embodiments, terminal 101 has a connected PCell and a connected SCell, but the SCell was previously in a dormancy state. When the DCI is received, the SCell dormancy indicator corresponding to the connected SCell indicates that terminal 101 does not enter a dormancy state on the SCell. The first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS through DCI containing the SCell dormancy indicator.

[0151] In some embodiments, the SCell dormancy indicator includes one or more indicator bits, each indicator bit corresponding to a secondary cell or a secondary cell group. Specifically, the SCell dormancy indicator includes multiple bits, each bit corresponding to one secondary cell or one secondary cell group.

[0152] In some embodiments, the SCell dormancy indicator includes one or more indicator bits. A first value indicates that the active BWP of a secondary cell or a group of secondary cells is a dormant BWP. A second value indicates that the active BWP of a secondary cell or a group of secondary cells is a non-dormant BWP.

[0153] For example, the first value is 0 and the second value is 1.

[0154] For example, for a given Scell, a '0' value in its corresponding 1 bit indicates that the active BWP of the corresponding SCell or SCell group is a dormant BWP. A '1' value in its corresponding 1 bit indicates that the active BWP of the corresponding SCell or SCell group is the first BWP (if the terminal's current active BWP is a dormant BWP, it switches to the non-dormant first BWP), or indicates that the active BWP of the corresponding SCell or SCell group is the currently active BWP (if the terminal's current active BWP is not a dormant BWP). For example, terminal 101 has a connected PCell and a connected SCell, but the SCell was previously in a dormancy state. When the DCI is received, the 1-bit indication in the SCell dormancy indicator corresponding to the connected SCell is '1', which means that the terminal does not enter the dormancy state on the SCell.

[0155] For example, the first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS through a DCI containing a SCell dormancy indicator, i.e., triggering the feature described in c) / f) / i) above. The CSI / CSI-RS / SRS is the CSI / CSI-RS / SRS on the second secondary cell. The second secondary cell is the secondary cell corresponding to the non-dormant bandwidth part (BWP) indicated by the SCell dormancy indicator in the DCI used to indicate the SCell dormancy indicator, and whose current BWP is a dormant BWP. That is, if the DCI indicates that the BWP corresponding to multiple SCells is a dormant BWP, where the current BWP of the first part of the SCells is a dormant BWP and the current BWP of the second part of the SCells is a non-dormant BWP, then the first information only triggers the CSI / CSI-RS / SRS of the first part of the SCells.

[0156] It should be noted that the SCell dormancy indicator in DCI can contain an indicator field specifically used to indicate SCell dormancy, such as the "SCell dormancy indicator" field; or, under certain specific circumstances, other indicator fields can be reused to indicate SCell dormancy, such as when DCI is not used for scheduling PDSCH, at least one of the following indicator fields can be reused: A. MCS of Transmission Block (TB) 1; New data indications for B.TB1; A redundant version of C.TB1; D. Hybrid Automatic Repeat reQuest (HARQ) process number; E. Antenna port; F. Demodulation Reference Signal (DMRS) sequence initialization.

[0157] In some embodiments, terminal 101 may send the first information in different information / channels.

[0158] In some embodiments, terminal 101 sends first information in message 3 during random access.

[0159] In some embodiments, terminal 101 sends first information in message 3 during random access, message 3 including a Service Data Unit (SDU) of the Common Control Channel (CCCH), wherein the CCCH SDU includes at least one of the following: 1) Radio Resource Control (RRC) setup request; 2) Radio Resource Control (RRC) Reestablishment Request (RRCReestablishment Request); 3) Radio Resource Control (RRC) Resume Request In some embodiments, terminal 101 transmits first information carried on a dedicated control channel (DCCH).

[0160] In some embodiments, the DCCH carries UE capability information.

[0161] In some embodiments, terminal 101 sends first information in message 3 and DCCH during random access.

[0162] In some embodiments, CSI / CSI-RS / SRS is triggered by Msg 4 during the random access process, i.e., in the case of a) / d) / g) above, the terminal 101 sends the first information in message 3 during the random access process.

[0163] In some embodiments, any of the features in a) to i) above can be reported through the UE capability information carried by the DCCH.

[0164] In some embodiments, when terminal 101 sends the first information in message 3 during the random access process, it also needs to report other UE capabilities via Msg 3.

[0165] In step S2102, terminal 101 sends the second information.

[0166] In some embodiments, network device 102 receives second information.

[0167] In some embodiments, the second information is used to indicate other terminal capabilities that are different from the capabilities corresponding to the features indicated by the first information.

[0168] In some embodiments, the second information includes at least one of the following: the maximum number of CSI-RS ports supported by the terminal; the maximum number of CSI-RS resources in a resource set supported by the terminal; the SRS pattern supported by the terminal for antenna switching; the rank supported by the terminal; and the mode supported by the terminal.

[0169] In some embodiments, a second message is sent in message 3 during the random access process. In some embodiments, the first message indicates that the terminal supports triggering CSI-RS via message 4 during the random access process. The terminal 101 sends the first message in message 3 during the random access process. The other terminal capabilities indicated by the second message include the maximum number of CSI-RS ports supported by the terminal and / or the maximum number of CSI-RS resources in a resource set.

[0170] In some embodiments, the first information indicates that the terminal supports triggering CSI via message 4 in the random access procedure. The terminal 101 sends the first information in message 3 in the random access procedure. Other terminal capabilities indicated by the second information include at least one of the following: the maximum number of CSI-RS ports supported by the terminal; the maximum number of CSI-RS resources in a resource set supported by the terminal; the rank supported by the terminal; and the mode supported by the terminal.

[0171] For example, the first information indicates that the terminal supports triggering CSI through message 4 in the random access process. The terminal 101 sends the first information in message 3 in the random access process. The number of ranks supported by the terminal may not be reported. The terminal reports CSI based on rank=1.

[0172] For example, the first information indicates that the terminal supports triggering CSI via message 4 during the random access procedure. The terminal 101 sends the first information in message 3 during the random access procedure. The supported modes of the terminal include mode1 and mode2. The terminal may also not report the supported modes, and the terminal reports CSI based on mode1. Mode 1 and mode 2 can correspond to different vector selection modes of type 1 single panel CSI.

[0173] In some embodiments, the first information indicates that the terminal supports triggering SRS via message 4 during the random access process. The terminal 101 sends the first information in message 3 during the random access process. Other terminal capabilities indicated by the second information include SRS patterns for antenna switching supported by the terminal.

[0174] For example, the SRS pattern for antenna switching supported by the terminal may include one or more of the following: a)'t1r2' for 1T2R, ' b) t1r1-t1r2' for 1T=1R / 1T2R, c)'t2r4' for 2T4R, d)'t1r4' for 1T4R, e)'t1r1-t1r2-t1r4' for 1T=1R / 1T2R / 1T4R, f)'t1r4-t2r4' for 1T4R / 2T4R, g)'t1r1-t1r2-t2r2-t2r4' for 1T=1R / 1T2R / 2T=2R / 2T4R, h)'t1r1-t1r2-t2r2-t1r4-t2r4' for 1T=1R / 1T2R / 2T=2R / 1T4R / 2T4R, i)'t1r1' for 1T=1R, j)'t2r2' for 2T=2R, k)'t1r1-t2r2' for 1T=1R / 2T=2R, l)'t4r4' for 4T=4R, or m)'t1r1-t2r2-t4r4' for 1T=1R / 2T=2R / 4T=4R) n)'t8r8' for 8T=8R In the above-mentioned xTyR, xT refers to x transmitting antennas (or ports), and yR refers to y receiving antennas (or ports).

[0175] In some embodiments, the method of early SRS / early CSI-RS / early CSI triggering involved in the present disclosure enables the terminal to transmit data as quickly as possible based on accurate CSI after entering a connected state or non-sleep state on a certain serving cell, thereby improving throughput.

[0176] The communication method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2102. For example, step S2101 may be implemented as a standalone embodiment, but is not limited thereto.

[0177] In the communication method involved in the embodiments of this disclosure, the order of steps S2101 to S2102 is not limited. Step S2101 can be placed first, or step S2102 can be placed first.

[0178] In some embodiments, step S2102 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0179] In some embodiments, if an arrow in the interaction diagram representing the sending of information, signaling, etc. from one subject to another passes through other subjects, it can be interpreted as the information being forwarded from one subject to another via other subjects, or it can be interpreted as the information being sent from one subject to another without passing through other subjects.

[0180] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0181] Figure 3 This is a schematic diagram illustrating a communication method interaction according to an embodiment of the present disclosure.

[0182] In step S3101, terminal 101 sends first information, and network device 102 receives the first information.

[0183] The first information is used to indicate that the terminal supports at least one of the following features: triggering of advance channel state information (CSI), triggering of advance channel state information reference signal (CSI-RS), and triggering of advance sounding reference signal (SRS).

[0184] In some embodiments, the early CSI triggering includes at least one of the following features: CSI is triggered via message 4 during the random access process; CSI is triggered by activating MAC CE in the secondary cell; CSI is triggered by downlink control information that includes a secondary cell hibernation indication.

[0185] In some embodiments, the early triggering of CSI-RS includes at least one of the following features: CSI-RS is triggered via message 4 during the random access process; CSI-RS is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. CSI-RS is triggered by downlink control information that includes a secondary cell hibernation indication.

[0186] In some embodiments, the early triggering of SRS includes at least one of the following features: SRS is triggered via message 4 during the random access process; SRS is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. SRS is triggered by downlink control information that includes a secondary cell hibernation indication.

[0187] In some embodiments, in response to the terminal supporting at least two different features, terminal 101 sends first information for each of the at least two different features supported by the terminal. Network device 102 receives the first information for each of the at least two different features supported by the terminal.

[0188] In some embodiments, the terminal 101 sending the first information includes at least one of the following: The first message is sent in message 3 during the random access process; The first information is carried on the dedicated control channel DCCH and transmitted.

[0189] In some embodiments, the network device 102 receiving the first information includes at least one of the following: The first information is received in message 3 during the random access process; Receive the first information carried on the dedicated control channel DCCH.

[0190] In some embodiments, message 3 includes a Service Data Unit (SDU) of the Common Control Channel (CCCH), and the CCCH SDU includes at least one of the following: RRCsetuprequest, RRCReestablishmentRequest, and RRCResumeRequest.

[0191] In some embodiments, DCCH corresponds to bearer terminal capability information.

[0192] In some embodiments, the first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS via message 4 during the random access procedure; CSI / CSI-RS / SRS refers to the CSI / CSI-RS / SRS on the first cell. Message 4 is message 4 in the random access process corresponding to the terminal switching from idle state or inactive state to connected state on the first cell.

[0193] In some embodiments, the first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS via secondary cell activation MAC CE; CSI / CSI-RS / SRS refers to the CSI / CSI-RS / SRS on the first secondary cell; the first secondary cell is a secondary cell activated by MAC CE activation of the secondary cell.

[0194] In some embodiments, the first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS through downlink control information including a secondary cell sleep indication; the CSI / CSI-RS / SRS is the CSI / CSI-RS / SRS on the second secondary cell; the second secondary cell is the secondary cell corresponding to the non-sleeping BWP through the secondary cell sleep indication, and the secondary cell sleep indication is included in the downlink control information used to indicate the secondary cell sleep indication.

[0195] In some embodiments, the secondary cell dormancy indicator includes one or more indicator bits, each indicator bit corresponding to a secondary cell or a secondary cell group; when the indicator bit is a first value, the active BWP corresponding to the indicator bit of a secondary cell or a secondary cell group is a dormant BWP; when the indicator bit is a second value, the active BWP corresponding to the indicator bit of a secondary cell or a secondary cell group is a non-dormant BWP.

[0196] In some embodiments, terminal 101 sends second information in message 3 during random access in at least one of the following ways, wherein the second information includes at least one of the following: the maximum number of CSI-RS ports supported by the terminal; the maximum number of CSI-RS resources in a resource set supported by the terminal; the SRS pattern supported by the terminal for antenna switching; the rank supported by the terminal; and the mode supported by the terminal.

[0197] In some embodiments, the first information indicates that the terminal supports triggering CSI-RS via message 4 in the random access process, and the second information includes the maximum number of CSI-RS ports supported by the terminal and / or the maximum number of CSI-RS resources in a resource set; In some embodiments, the first information indicates that the terminal supports triggering SRS via message 4 during the random access process, and the second information includes an SRS pattern for antenna switching supported by the terminal. In some embodiments, the first information indicates that the terminal supports triggering CSI via message 4 in the random access procedure, and the second information includes at least one of the following: the maximum number of CSI-RS ports supported by the terminal; the maximum number of CSI-RS resources in a resource set supported by the terminal; the rank supported by the terminal; and the mode supported by the terminal.

[0198] In some embodiments, the advance CSI includes at least one of the following: PMI; RI; CQI; LI; CRI.

[0199] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0200] In some embodiments, if an arrow in the interaction diagram representing the sending of information, signaling, etc. from one subject to another passes through other subjects, it can be interpreted as the information being forwarded from one subject to another via other subjects, or it can be interpreted as the information being sent from one subject to another without passing through other subjects.

[0201] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0202] In some embodiments, to address the issue that the CSI cannot be obtained in a timely manner when the terminal first enters the connected state, thus affecting the data transmission rate, existing solutions have proposed triggering the terminal to send SRS, receive CSI-RS, or trigger CSI reporting during random access. However, for terminals accessing the network for the first time, the network device does not know whether the terminal has the capability. Therefore, how the terminal reports the UE capability is a problem that needs to be solved.

[0203] In some embodiments, in order to enable the terminal to send SRS or measure CSI-RS and report CSI before entering the connected state, the present invention proposes a corresponding terminal capability reporting method to ensure that the terminal can perform data scheduling as soon as possible based on accurate CSI after the connection is established, thereby improving the data transmission rate.

[0204] In some embodiments, the communication method provided in this disclosure may include the following: 1) The terminal sends first information, the first information being used to indicate that the terminal supports a first feature, the first feature being at least one of the following: a) Early CSI Trigger b) CSI-RS early triggering c) Early triggering of SRS 2) Based on 1), the early triggering of CSI includes triggering through any of the following methods: i. Triggered via Msg 4 during the random access process ii. Activate MAC CE trigger via SCell iii. Triggered via DCI containing the SCell dormancy indicator: 3) Based on 1), the CSI-RS early triggering includes triggering via any of the following methods. i. Triggered via Msg 4 during the random access process ii. Activate MAC CE trigger via SCell: iii. Triggered via DCI containing the SCell dormancy indicator 4) Based on 1), the SRS early triggering includes triggering via any of the following methods. i. Triggered via Msg 4 during the random access process ii. Activate MAC CE trigger via SCell iii. Triggered via DCI containing the SCell dormancy indicator 5) Based on any one of 1-4, at least two of the above nine features correspond to different terminal capability information, that is, the terminal sends whether it supports at least two of the above nine features respectively. In the extreme case, all nine features are sent separately to indicate whether they are supported.

[0205] a) For example, send separate messages to indicate whether CSI early triggering, CSI-RS early triggering, and SRS early triggering are supported. b) For example, send separate messages to indicate whether CSI early triggering is supported based on one of the following CSI early triggering methods. i. Triggered via Msg 4 during the random access process ii. Activate MAC CE trigger via SCell iii. Triggered via DCI containing the SCell dormancy indicator ... 6) Based on any one of 1)-5), the first information is included in the CCCH (Common Control Channel) information (SDU) of Msg 3 during the random access procedure. a) Where CCCH SDU corresponds to at least one of the following i.RRCsetuprequest ii.RRCReestablishmentRequest iii.RRCResumeRequest 7) Based on any one of 1)-5), the first information is carried on the DCCH (Dedicated Control Channel). a) DCCH (Dedicated Control Channel) information corresponds to UE capability information 8) Based on any one of 1)-4), triggered by Msg 4 during the random access process, it is used for the terminal to transition from the RRC_IDLE / INACTIVE state to the RRC_connected state. a) That is, the SRS, CSI-RS or CSI on the PCell of the terminal is triggered.

[0206] 9) Based on any one of 1)-4), MAC CE triggering via SCell activation is used to trigger the SRS, CSI-RS or CSI on the SCell of the terminal, and the SCell is an Scell ​​activated by MAC CE for SCell activation.

[0207] a) That is, the terminal already has a connected PCell, but needs to activate the SCell in order to transmit based on multiple serving cells.

[0208] 10) Based on any one of 1)-4), triggered by a DCI containing an SCell dormancy indicator, is an SRS, CSI-RS, or CSI used to trigger the SCell on the terminal's SCell. This SCell corresponds to the non-dormant BWP indicated by the SCell dormancy indicator in the DCI used to indicate the SCell dormancy indicator.

[0209] a) This means the terminal already has a connected PCell and a connected SCell, but the SCell was previously in a dormancy state. A DCI instruction has just been received indicating that 1 bit in the SCell dormancy indicator for that SCell is '1', meaning the terminal will not enter a dormancy state on that SCell. The SCell dormancy indicator consists of multiple bits, each corresponding to one SCell or one SCell group.

[0210] i. For a given Scell, a '0' value in its corresponding 1-bit indicates that the active BWP of the corresponding Scell ​​or Scell ​​group is a dormant BWP. A '1' value indicates that the active BWP of the corresponding Scell ​​or Scell ​​group is the first BWP (if the current active BWP is a dormant BWP, it switches to the non-dormant first BWP), or indicates that the active BWP of the corresponding Scell ​​or Scell ​​group is the currently active BWP (if the current active BWP is not a dormant BWP). 11) Based on 1, CSI in early CSI triggering can also be called CSI report, including at least one of the following: b)PMI: precoding matrix indicator c)RI: rank indicator d)CQI: channel quality indicator e)LI: layer indicator f)CRI: CSI-RS resource indicator 12) Based on 6), only UE capabilities triggered by Msg 4 during the random access process will be reported via Msg 3. That is, only the following three UE capabilities can be reported via Msg 3, while all nine can be reported via UE capability information carried by the DCCH. When reporting the following three UE capabilities via Msg 3, it is also necessary to report the other UE capabilities via Msg 3, as follows: a) Trigger CSI via Msg 4 i. Supports a maximum number of CSI-RS ports (12). ii. The maximum number of CSI-RS resources in a resource set iii. Supported rank 1. Alternatively, no report can be submitted; the terminal will report CSI based on rank=1. iv. Supported modes: Does it only support mode 1, or does it support both mode 1 and mode 2? 1. Alternatively, no reporting is required; the terminal can report CSI based on mode 1. b) Trigger CSI-RS via Msg 4 i. Maximum number of supported CSI-RS ports ii. The maximum number of CSI-RS resources in a resource set c) Trigger SRS via Msg 4 i. Supported SRS pattern for antenna switching, xTyR, where xT refers to x transmit antennas (or ports) and yR refers to y receive antennas (or ports). 1. Supported SRS-TxPort Switch a)'t1r2' for 1T2R, ' b) t1r1-t1r2' for 1T=1R / 1T2R, c)'t2r4' for 2T4R, d)'t1r4' for 1T4R, e)'t1r1-t1r2-t1r4' for 1T=1R / 1T2R / 1T4R, f)'t1r4-t2r4' for 1T4R / 2T4R, g)'t1r1-t1r2-t2r2-t2r4' for 1T=1R / 1T2R / 2T=2R / 2T4R, h)'t1r1-t1r2-t2r2-t1r4-t2r4' for 1T=1R / 1T2R / 2T=2R / 1T4R / 2T4R, i)'t1r1' for 1T=1R, j)'t2r2' for 2T=2R, k)'t1r1-t2r2' for 1T=1R / 2T=2R, l)'t4r4' for 4T=4R, or m)'t1r1-t2r2-t4r4' for 1T=1R / 2T=2R / 4T=4R) n)'t8r8' for 8T=8R This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Furthermore, another apparatus is proposed that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0211] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD), such as a field-programmable gate array (FPGA), which can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0212] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute 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 relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using 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 configuring the hardware circuit 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. Furthermore, 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), or a Deep Learning Processing Unit (DPU).

[0213] Figure 4A This is a schematic diagram of the structure of a terminal according to an embodiment of this disclosure. Terminal 4100 is used to execute any of the above methods. In some embodiments, such as... Figure 4A As shown, terminal 4100 may include at least one of a transceiver module 4101, a processing module 4102, etc. In some embodiments, the transceiver module is used to perform step S2101. Optionally, the transceiver module is used to perform at least one of the communication steps (such as step S2101, step S2102, but not limited thereto) performed by the terminal in any of the above methods, which will not be elaborated here. Optionally, the processing module is used to perform at least one of the other steps performed by the terminal in any of the above methods, which will not be elaborated here.

[0214] Figure 4B This is a schematic diagram of the structure of a network device according to an embodiment of this disclosure. Network device 4200 is used to perform any of the above methods. In some embodiments, such as... Figure 4BAs shown, network device 4200 may include at least one of a transceiver module 4201, a processing module 4202, etc. In some embodiments, the transceiver module is used to perform step S2101. Optionally, the transceiver module is used to perform at least one of the communication steps (such as step S2101, step S2102, but not limited thereto) performed by the network device in any of the above methods, which will not be elaborated here. Optionally, the processing module is used to perform at least one of the other steps performed by the network device in any of the above methods, which will not be elaborated here.

[0215] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0216] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module.

[0217] In some embodiments, the processing module can be replaced by the processor, and the transceiver module can be replaced by the transceiver.

[0218] Figure 5A This is a schematic diagram of the structure of the communication device 5100 proposed in this embodiment. The communication device 5100 can be the aforementioned terminal or a network device. Specifically, the communication device 5100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 5100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0219] like Figure 5A As shown, the communication device 5100 is used to execute any of the above methods. In some embodiments, the communication device 5100 includes one or more processors 5101. The processor 5101 may be a general-purpose processor or a special-purpose processor, such as a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 5100 is used to execute any of the above methods. Optionally, one or more processors 5101 are used to invoke instructions to cause the communication device 5100 to execute any of the above methods.

[0220] In some embodiments, the communication device 5100 further includes one or more transceivers 5102. When the communication device 5100 includes one or more transceivers 5102, the transceiver 5102 performs at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S2101, S2102, but not limited thereto), and the processor 5101 performs at least one of the other steps. In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, sending unit, transmitter, sending circuit, etc., can be used interchangeably; the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0221] In some embodiments, the communication device 5100 further includes one or more memories 5103 for storing data and / or instructions. Optionally, one or more processors 5101 are used to invoke instructions stored in the memory 5103 to cause the communication device 5100 to perform any of the above methods. Optionally, all or part of the memory 5103 may also be located outside the communication device 5100. In an optional embodiment, the communication device 5100 may include one or more interface circuits 5104. Optionally, the interface circuit 5104 is connected to the memory 5103 and can be used to receive data and / or instructions from the memory 5103 or other devices, and can be used to send data and / or instructions to the memory 5103 or other devices. For example, the interface circuit 5104 can read data and / or instructions stored in the memory 5103 and send the data and / or instructions to the processor 5101.

[0222] The communication device 5100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 5100 described in this disclosure is not limited thereto, and the structure of the communication device 5100 may vary. Figure 5A The limitations. The communication device may be a standalone device or part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally including storage components for storing data, programs and / or instructions; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0223] Figure 5BThis is a schematic diagram of the structure of chip 5200 according to an embodiment of this disclosure. For cases where the communication device 5100 can be a chip or a chip system, please refer to... Figure 5B The diagram shown is a schematic representation of the structure of chip 5200, but it is not limited to this.

[0224] Chip 5200 includes one or more processors 5201. Chip 5200 is used to perform any of the methods described above.

[0225] In some embodiments, chip 5200 further includes one or more interface circuits 5202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 5200 further includes one or more memories 5203 for storing data and / or instructions. Optionally, all or part of the memories 5203 may be located outside of chip 5200. Optionally, the interface circuit 5202 is connected to the memories 5203, and the interface circuit 5202 can be used to receive data and / or instructions from the memories 5203 or other devices, and the interface circuit 5202 can be used to send data and / or instructions to the memories 5203 or other devices. For example, the interface circuit 5202 can read data and / or instructions stored in the memories 5203 and send the data and / or instructions to the processor 5201.

[0226] In some embodiments, the interface circuit 5202 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., steps S2101, S2102, but not limited thereto). The interface circuit 5202 performing the communication steps such as sending and / or receiving in the above-described method refers, for example, to the interface circuit 5202 performing data and / or instruction interaction between the processor 5201, the chip 5200, the memory 5203, or the transceiver device. In some embodiments, the processor 5201 performs at least one of the other steps.

[0227] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0228] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform 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 not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0229] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.

[0230] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method, characterized in that, The method, executed by a terminal, includes: Send a first message, which is used to indicate that the terminal supports at least one of the following features: triggering of advance channel state information (CSI), triggering of advance channel state information reference signal (CSI-RS), and triggering of advance sounding reference signal (SRS).

2. The method according to claim 1, characterized in that, The early CSI triggering includes at least one of the following features: CSI is triggered via message 4 during the random access process; CSI is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. CSI is triggered by downlink control information that includes a secondary cell hibernation indication.

3. The method according to claim 1, characterized in that, The early triggering of CSI-RS includes at least one of the following features: CSI-RS is triggered via message 4 during the random access process; CSI-RS is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. CSI-RS is triggered by downlink control information that includes a secondary cell hibernation indication.

4. The method according to claim 1, characterized in that, The early triggering of the SRS includes at least one of the following features: SRS is triggered via message 4 during the random access process; SRS is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. SRS is triggered by downlink control information that includes a secondary cell hibernation indication.

5. The method according to any one of claims 1-4, characterized in that, In response to the terminal supporting at least two different features, sending the first information includes: For each of the at least two different features supported by the terminal, first information is sent respectively.

6. The method according to any one of claims 2-5, characterized in that, The sending of the first information includes at least one of the following: The first information is sent in message 3 during the random access process; The first information is transmitted via a dedicated control channel (DCCH).

7. The method according to claim 6, characterized in that, Message 3 includes a Service Data Unit (SDU) for the Common Control Channel (CCCH), and the CCCH SDU includes at least one of the following: Radio Resource Control (RRC) Establishment Request; Radio Resource Control (RRC) Reconstruction Request; Radio Resource Control (RRC) Recovery Request.

8. The method according to claim 6, characterized in that, The DCCH corresponds to the terminal capability information.

9. The method according to any one of claims 2-4, characterized in that, The first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS through message 4 in the random access process; The CSI / CSI-RS / SRS refers to the CSI / CSI-RS / SRS on the first cell, and message 4 is message 4 in the random access process corresponding to the terminal switching from idle state or inactive state to connected state on the first cell.

10. The method according to any one of claims 2-4, characterized in that, The first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS through the secondary cell activated Media Access Control Unit (MAC CE). The CSI / CSI-RS / SRS refers to the CSI / CSI-RS / SRS on the first secondary cell; the first secondary cell is a secondary cell activated by MAC CE activation of the secondary cell.

11. The method according to any one of claims 2-4, characterized in that, The first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS through downlink control information containing secondary cell sleep indication; The CSI / CSI-RS / SRS refers to the CSI / CSI-RS / SRS on the second secondary cell; the second secondary cell is the secondary cell corresponding to the non-dormant bandwidth portion (BWP) indicated by the secondary cell dormancy indicator, and the secondary cell dormancy indicator is included in the downlink control information used to indicate the secondary cell dormancy indicator.

12. The method according to claim 11, characterized in that, The secondary cell hibernation indicator includes one or more indicator bits, each indicator bit corresponding to a secondary cell or a group of secondary cells; The indicator bit is a first value, and the indicator bit corresponds to an active BWP for a secondary cell or a group of secondary cells, which is a dormant BWP. The indicator bit is the second value, and the indicator bit corresponds to an active BWP of a secondary cell or a group of secondary cells being a non-dormant BWP.

13. The method according to claim 6, characterized in that, The method further includes sending second information in message 3 during the random access process, wherein the second information includes at least one of the following: The maximum number of CSI-RS ports supported by the terminal; The maximum number of CSI-RS resources supported by a single resource set for the terminal; SRS patterns supported by the terminal for antenna switching; The rank supported by the terminal; The modes supported by the terminal.

14. The method according to claim 1, characterized in that, The advance CSI includes at least one of the following: Precoding matrix indicates PMI; Rank indicator RI; Channel Quality Indicator (CQI); Layer indicator LI; Channel State Information Reference Signal Resource Indicator (CRI).

15. A communication method, characterized in that, Performed by a network device, the method includes: The terminal receives first information, which is used to indicate that the terminal supports at least one of the following features: triggering of advance channel state information (CSI), triggering of advance channel state information reference signal (CSI-RS), and triggering of advance sounding reference signal (SRS).

16. The method according to claim 15, characterized in that, The early CSI triggering includes at least one of the following features: CSI is triggered via message 4 during the random access process; CSI is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. CSI is triggered by downlink control information that includes a secondary cell hibernation indication.

17. The method according to claim 15, characterized in that, The early triggering of CSI-RS includes at least one of the following features: CSI-RS is triggered via message 4 during the random access process; CSI-RS is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. CSI-RS is triggered by downlink control information that includes a secondary cell hibernation indication.

18. The method according to claim 15, characterized in that, The early triggering of the SRS includes at least one of the following features: SRS is triggered via message 4 during the random access process; SRS is triggered by activating the Media Access Control Unit (MAC CE) in the secondary cell. SRS is triggered by downlink control information that includes a secondary cell hibernation indication.

19. The method according to any one of claims 15-18, characterized in that, In response to the terminal supporting at least two different features, receiving the first information includes: For each of the at least two different features supported by the terminal, the first information is received respectively.

20. The method according to any one of claims 16-19, characterized in that, The receipt of the first information includes at least one of the following: The first information is received in message 3 during the random access process; Receive the first information carried on the dedicated control channel DCCH.

21. The method according to claim 20, characterized in that, Message 3 includes a Service Data Unit (SDU) for the Common Control Channel (CCCH), and the CCCH SDU includes at least one of the following: Radio Resource Control (RRC) Establishment Request; Radio Resource Control (RRC) Reconstruction Request; Radio Resource Control (RRC) Recovery Request.

22. The method according to claim 20, characterized in that, The DCCH corresponds to the terminal capability information.

23. The method according to any one of claims 16-20, characterized in that, The first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS through message 4 in the random access process; The CSI / CSI-RS / SRS refers to the CSI / CSI-RS / SRS on the first cell, and message 4 is message 4 in the random access process corresponding to the terminal switching from idle state or inactive state to connected state on the first cell.

24. The method according to any one of claims 16-20, characterized in that, The first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS through the secondary cell activated Media Access Control Unit (MAC CE). The CSI / CSI-RS / SRS refers to the CSI / CSI-RS / SRS on the first secondary cell; the first secondary cell is a secondary cell activated by MAC CE activation of the secondary cell.

25. The method according to any one of claims 16-20, characterized in that, The first information is used to indicate that the terminal supports triggering CSI / CSI-RS / SRS through downlink control information containing secondary cell sleep indication; The CSI / CSI-RS / SRS refers to the CSI / CSI-RS / SRS on the second secondary cell; the second secondary cell is the secondary cell corresponding to the non-dormant bandwidth portion (BWP) indicated by the secondary cell dormancy indicator, and the secondary cell dormancy indicator is included in the downlink control information used to indicate the secondary cell dormancy indicator.

26. The method according to claim 25, characterized in that, The secondary cell hibernation indicator includes one or more indicator bits, each indicator bit corresponding to a secondary cell or a group of secondary cells; The indicator bit is a first value, and the indicator bit corresponds to an active BWP for a secondary cell or a group of secondary cells, which is a dormant BWP. The indicator bit is the second value, and the indicator bit corresponds to an active BWP of a secondary cell or a group of secondary cells being a non-dormant BWP.

27. The method according to claim 20, characterized in that, The method further includes receiving second information in message 3 during the random access process, wherein the second information includes at least one of the following: The maximum number of CSI-RS ports supported by the terminal; The maximum number of CSI-RS resources supported by a single resource set for the terminal; SRS patterns supported by the terminal for antenna switching; The rank supported by the terminal; The modes supported by the terminal.

28. The method according to claim 15, characterized in that, The advance CSI includes at least one of the following: Precoding matrix indicates PMI; Rank indicator RI; Channel Quality Indicator (CQI); Layer indicator LI; Channel State Information Reference Signal Resource Indicator (CRI).

29. A communication device, characterized in that, The communication device is used to perform the communication method according to any one of claims 1-14 and 15-28.

30. A communication system, characterized in that, The device includes a terminal and a network device, wherein the terminal is configured to implement the communication method of any one of claims 1-14, and the network device is configured to implement the communication method of any one of claims 15-28.

31. A storage medium storing instructions, characterized in that, When the instruction is executed on the communication device, the communication device performs the communication method as described in any one of claims 1-14 and 15-28.

32. A program product comprising at least one of a program and instructions, characterized in that, When at least one of the programs or instructions is executed by the communication device, it implements the steps of the method according to any one of claims 1-14 and 15-28.

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