Information indication method, apparatus, device, and storage medium

Abstract

The application discloses an information indication method and device, equipment and a storage medium, and relates to the field of mobile communication. The method comprises the following steps: a terminal receives first indication information sent by a network device, and determines whether a first information field is included in first DCI according to the first indication information, wherein the first information field is used for indicating that the terminal uses M TCI states for receiving a physical downlink shared channel (PDSCH), the TCI state comprises at least one of a joint TCI state, a downlink TCI state and an uplink TCI state, and M is a positive integer. The application provides a scheme for determining whether an information field for indicating a used TCI state is included in control information through indication information, ensuring the accuracy of decoding the control information, and further improving the accuracy of the determined TCI state, so as to ensure the reliability of transmission.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mobile communication, and in particular to an information indication method and device, equipment and a storage medium. BACKGROUND

[0002] In a mobile communication system, data transmission between a network device and a terminal is provided through a beam, and the indication mode of the beam is to indicate the QCL (Quasi Co-Location) parameters corresponding to different channels through a TCI (Transmission Configuration Indication) state.

[0003] Currently, a unified TCI state is proposed, which includes separate indication of uplink transmission and downlink transmission, i.e., downlink TCI state and uplink TCI state, or joint indication of uplink and downlink, i.e., joint TCI state. That is, if the network device indicates a downlink TCI state for downlink transmission, the downlink TCI state can be used for PDSCH (Physical Downlink Shared Channel) and PDCCH (Physical Downlink Control Channel) of the terminal, as well as a part of CSI-RS (Channel State Information Reference Signal); if the network device indicates an uplink TCI state for uplink transmission, the uplink TCI state can be used for PUSCH (Physical Uplink Shared Channel) and PUCCH (Physical Uplink Control Channel) of the terminal, as well as a part of SRS (Sounding Reference Signal); and if the network device indicates a joint TCI state, the joint TCI state can be used for both uplink transmission and downlink transmission.

[0004] Currently, a new indication field is introduced in the control information sent by the network device to indicate the TCI state used by the PDSCH, but how the terminal determines whether the indication field exists becomes a problem to be solved. SUMMARY

[0005] Embodiments of the present application provide an information indication method, device, equipment and storage medium, which ensure the accuracy of decoding control information, and further improve the accuracy of determined TCI state to ensure the reliability of transmission. The technical solutions are as follows:

[0006] According to a first aspect of the present application, an information indication method is provided, the method is executed by a terminal, and the method comprises:

[0007] receiving first indication information sent by a network device, and determining whether a first information field is included in first DCI according to the first indication information, the first information field being used to indicate that the terminal uses M TCI states for PDSCH reception, the TCI state comprising at least one of joint TCI state, downlink TCI state and uplink TCI state, and M being a positive integer.

[0008] According to a second aspect of the present application, an information indication method is provided, the method is executed by a network device, and the method comprises:

[0009] sending first indication information to a terminal, the first indication information being used for the terminal to determine whether a first information field is included in first DCI, the first information field being used to indicate that the terminal uses M TCI states for PDSCH reception, the TCI state comprising at least one of joint TCI state, downlink TCI state and uplink TCI state, and M being a positive integer.

[0010] According to a third aspect of the present application, an information indication device is provided, the device comprises:

[0011] a receiving module configured to receive first indication information sent by a network device;

[0012] a processing module configured to determine whether a first information field is included in first DCI according to the first indication information, the first information field being used to indicate that the terminal uses M TCI states for PDSCH reception, the TCI state comprising at least one of joint TCI state, downlink TCI state and uplink TCI state, and M being a positive integer.

[0013] According to a fourth aspect of the present application, an information indication device is provided, the device comprises:

[0014] a sending module configured to send first indication information to a terminal, the first indication information being used for the terminal to determine whether a first information field is included in first DCI, the first information field being used to indicate that the terminal uses M TCI states for PDSCH reception, the TCI state comprising at least one of joint TCI state, downlink TCI state and uplink TCI state, and M being a positive integer.

[0015] According to a fifth aspect of the present application, a terminal is provided, the terminal comprising: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the information indication method according to the above aspect.

[0016] According to a sixth aspect of the present application, a network device is provided, the network device comprising: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the information indication method according to the above aspect.

[0017] According to a seventh aspect of the present application, a communication system is provided, the communication system comprising a terminal and a network device, the terminal being configured to implement the information indication method according to the first aspect, and the network device being configured to implement the information indication method according to the second aspect.

[0018] According to an eighth aspect of the present application, a computer readable storage medium is provided, the computer readable storage medium storing executable program codes, the executable program codes being loaded and executed by a processor to implement the information indication method according to the above aspect.

[0019] According to a ninth aspect of the present application, a chip is provided, the chip comprising a programmable logic circuit and / or program instructions, when the chip is running on a terminal or a network device, the chip being configured to implement the information indication method according to the above aspect.

[0020] According to a tenth aspect of the present application, a computer program product is provided, when the computer program product is executed by a processor of a terminal or a network device, the computer program product being configured to implement the information indication method according to the above aspect.

[0021] The present application provides a scheme for determining whether an information field indicating a TCI state used is included in control information by indicating information, ensuring the accuracy of decoding the control information, and further improving the accuracy of determining the TCI state, to ensure the reliability of transmission. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 A block diagram of a communication system provided by an exemplary embodiment of the present application is shown;

[0024] Figure 2FIG. 2 shows a block diagram of another communication system according to an example embodiment of the present application;

[0025] Figure 3 FIG. 4 shows a flowchart of a method for information indication according to an example embodiment of the present application;

[0026] Figure 4 FIG. 4 shows a flowchart of a method for information indication according to an example embodiment of the present application;

[0027] Figure 5 FIG. 4 shows a flowchart of a method for information indication according to an example embodiment of the present application;

[0028] Figure 6 FIG. 5 shows a block diagram of an information indication apparatus according to an example embodiment of the present application;

[0029] Figure 7 FIG. 5 shows a block diagram of an information indication apparatus according to an example embodiment of the present application;

[0030] Figure 8 FIG. 6 shows a structural schematic diagram of a communication device according to an example embodiment of the present application. DETAILED DESCRIPTION

[0031] For the purpose of the present application, the technical solutions and advantages will be more clearly understood, the following will be further described in detail with the embodiments of the present application.

[0032] The example embodiments will be described in detail herein with reference to the accompanying drawings. The following description is presented with reference to the accompanying drawings in which the same numbers represent the same or similar elements throughout the several drawings. The following description is presented with reference to the accompanying drawings in which the same numbers represent the same or similar elements throughout the several drawings. The embodiments described in the following example embodiments are not meant to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the appended claims.

[0033] The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the present application and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0034] It should be understood that, although the terms first, second, third, etc. can be adopted in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information, without departing from the scope of the present application. Depending on the context, for example, the word "if" used herein can be interpreted as "when" or "upon determining" or "in response to determining".

[0035] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.) and signals involved in the present application are authorized by the user or fully authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0036] Firstly, the terms involved in the present application are explained.

[0037] TCI state: the TCI state is used to indicate QCL parameters, that is, the terminal and network device in the present application will perform data transmission based on the QCL parameters indicated by the TCI state. Among them, QCL type D corresponds to at least one of Rx spatial parameter (spatial parameter), UL spatial filter (uplink spatial filter), spatial setting (spatial setting), spatial relation information (spatial relation information) and the like. QCL Type D is commonly known as beam.

[0038] Among them, if the communication frequency band is in frequency range 2 (frequency range 2), the high frequency channel attenuates quickly, so the beam-based data transmission mode is adopted.

[0039] Specifically, there are channels and / or reference signals between the network device and the terminal. The channels include at least one of PDCCH, PDSCH, PUSCH or PUCCH. The reference signals include at least one of CSI-RS, SRS, PRS or TRS. The CSI-RS includes at least one of CSI-RS for channel state information measurement, CSI-RS for beam measurement or CSI-RS for path loss estimation. The SRS includes at least one of SRS for codebook-based or non-codebook-based channel state information measurement, SRS for beam measurement or SRS for positioning measurement. The TCI states of the above-mentioned reference signals are independently indicated. The PDCCH and the PUCCH activate their respective TCI states using MAC CE. The PDSCH and the PUSCH indicate their respective TCI states using DCI signaling.

[0040] In addition, the present application proposes to indicate the TCI state of at least one channel and / or signal by a unified TCI state. The unified TCI state currently includes separate indication of uplink transmission and downlink transmission, i.e. downlink TCI state and uplink TCI state, or joint indication of uplink transmission and downlink transmission, i.e. joint TCI state. That is, if the network device indicates a downlink TCI state for downlink transmission, the downlink TCI state can be used for the terminal's PDSCH (Physical Downlink Shared Channel) and PDCCH (Physical Downlink Control Channel), as well as part of the CSI-RS (Channel State Information Reference Signal); if the network device indicates an uplink TCI state for uplink transmission, the uplink TCI state can be used for the terminal's PUSCH (Physical Uplink Shared Channel) and PUCCH (Physical Uplink Control Channel), as well as part of the SRS (Sounding Reference Signal); if the network device indicates a joint TCI state, the joint TCI state can be used for both uplink transmission and downlink transmission.

[0041] Secondly, the application scenarios of the present application are described:

[0042] Figure 1A block diagram of a communication system is shown, which can include a terminal 10 and a network device 20.

[0043] The number of terminals 10 is usually multiple, and one or more terminals 10 can be distributed in a cell managed by each network device 20. The terminal 10 can include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication functions, and various forms of user equipment (UE), mobile stations (MS), etc. For convenience of description, the above-mentioned devices are collectively referred to as terminals in the embodiments of the present application.

[0044] The network device 20 is a device deployed in an access network to provide wireless communication functions for the terminal 10. For convenience of description, the above-mentioned device providing wireless communication functions for the terminal 10 is collectively referred to as the network device in the embodiments of the present application. The network device 20 and the terminal 10 can establish a connection through an air interface, so as to communicate through the connection, including the interaction of signaling and data. The number of network devices 20 can be multiple, and two adjacent network devices 20 can also communicate through wired or wireless means. The terminal 10 can send beam reports between different network devices 20, that is, establish connections with different network devices 20.

[0045] The network device 20 can include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different wireless access technologies, the names of devices with network device functions can be different, for example, in the 5G NR (New Radio) system, it is called gNodeB or gNB. With the evolution of communication technology, the name of "network device" may change.

[0046] Optionally, the network device 20 is provided with at least two TRPs (Transmission Reception Point, transmission reception point); or at least two network devices 20, each of which is provided with at least one TRP, that is, at least two network devices 20 are provided with at least two TRPs. That is, at least two TRPs can come from the same cell or different cells.

[0047] In some embodiments, referring to Figure 2 , the network device 20 is provided with 4 TRPs, and the terminal 10 can be served through the 4 TRPs, and the terminal 10 can perform data transmission based on the 4 TRPs.

[0048] Wherein, the data transmission between the network device 20 and the terminal 10 through multiple TRPs is called M-TRP transmission, and the data transmission between the network device 20 and the terminal 10 through a single TRP is called S-TRP transmission.

[0049] In the case of M-TRP, if multiple sets of TCI states are indicated by the TCI state indication information, the dynamic switching of M-TRP and S-TRP of PDSCH still needs to be implemented, so a new indication field is introduced in the first DCI to indicate that the TCI state used by the PDSCH is one or more TCI states indicated by the TCI field.

[0050] The "5G NR system" in the embodiments of the present application can also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of the present application can be applied to the 5G NR system, and can also be applied to the subsequent evolution system of the 5G NR system.

[0051] Figure 3 The flowchart of the information indication method provided by one example embodiment of the present application is shown, which can be applied to, for example, Figure 1 The method includes at least part of the following contents:

[0052] Step 301: The network device sends the first indication information to the terminal, the first indication information is used for the terminal to determine whether the first information field is included in the first DCI, the first information field is used to indicate that the terminal uses M TCI states for PDSCH reception, the TCI state includes at least one of joint TCI state, downlink TCI state and uplink TCI state, and M is a positive integer.

[0053] Step 302: The terminal receives the first indication information sent by the network device, and determines whether the first information field is included in the first DCI according to the first indication information, the first information field is used to indicate that the terminal uses M TCI states for physical downlink shared channel PDSCH reception, the TCI state includes at least one of joint TCI state, downlink TCI state and uplink TCI state, and M is a positive integer.

[0054] Wherein, the first DCI refers to the information of the parameters configured by the network device for the terminal.

[0055] The first indication information indicates whether the first information field is included in the first DCI. For example, if the first indication information is 1, it means that the first information field is included in the first DCI, and if the first indication information is 0, it means that the first information field is not included in the first DCI.

[0056] The first information field indicates that the terminal uses M TCI states for PDSCH reception. That is, the terminal performs PDSCH reception based on the selected M TCI states.

[0057] In some embodiments, the network device sends second indication information to the terminal, and the second indication information indicates N TCI states. The terminal receives the second indication information sent by the network device, and determines the N TCI states based on the second indication information. N is a positive integer, and M is not greater than N. The M TCI states belong to a subset of the N TCI states indicated by the second indication information. That is, the first information field indicates that the terminal uses M TCI states from the N TCI states indicated by the second indication information for PDSCH reception. The terminal selects M TCI states from the N TCI states indicated by the second indication information for PDSCH reception.

[0058] The second indication information is used to indicate N TCI states. That is, the network device sends second indication information indicating N TCI states to the terminal. After receiving the second indication information, the terminal determines the N TCI states configured by the network device based on the second indication information.

[0059] For example, the N TCI states indicated by the second indication information include TCI state #1, TCI state #2, TCI state #3, TCI state #4, TCI state #5, and TCI state #6. The M TCI states indicated by the first information field are TCI state #1, TCI state #2, TCI state #4, and TCI state #5 in the N TCI states.

[0060] For example, the N TCI states indicated by the second indication information include TCI state #1 and TCI state #2. The M TCI states indicated by the first information field are TCI state #1 in the N TCI states.

[0061] For example, the N TCI states indicated by the second indication information include TCI state #1, TCI state #2, TCI state #3, and TCI state #4. The M TCI states indicated by the first information field are TCI state #1 and TCI state #2 in the N TCI states.

[0062] The TCI state includes at least one of a joint TCI state, a downlink TCI state, and an uplink TCI state. The joint TCI state can be used for both uplink transmission and downlink transmission. The uplink TCI state is used for uplink transmission. The downlink TCI state is used for downlink transmission.

[0063] In the embodiments of the present application, the network device sends first indication information for the terminal to determine whether the first information field is included in the first DCI to the terminal, and then the terminal can determine whether the first information field is included in the first DCI according to the first indication information after receiving the first indication information, and further determine whether the M TCI states used can be determined based on the first information field.

[0064] It should be noted that the steps performed by the terminal in the embodiments of the present application can form a new embodiment alone, and the steps performed by the network device can form a new embodiment alone, which are not limited in the embodiments of the present application.

[0065] The present application provides a scheme for determining whether an information field indicating the TCI state used is included in the control information by indication information, ensuring the accuracy of decoding the control information, and further improving the accuracy of determining the TCI state, to ensure the reliability of transmission.

[0066] Figure 3 The embodiments shown illustrate the terminal receiving the first indication information. In addition, the terminal will determine whether the first information field is included in the first DCI according to the first indication information. How the terminal determines whether the first information field is included in the first DCI according to the first indication information is described below.

[0067] In some embodiments, the first indication information is used to indicate the target PDSCH transmission method, and then the terminal can determine whether the first information field is included in the first DCI according to whether the first indication information indicates the target PDSCH transmission method.

[0068] In the case where the first indication information indicates the target PDSCH transmission method, it is determined that the first information field is included in the first DCI. That is, if the PDSCH transmission method indicated by the first indication information is the target PDSCH transmission method, it means that the first information field is included in the first DCI.

[0069] The target PDSCH transmission method refers to the PDSCH transmission method indicated by the network device for the terminal to use at least two TCI states.

[0070] Optionally, the target PDSCH transmission method includes at least one of the following:

[0071] (1) Frequency division multiplexing method A.

[0072] The frequency division multiplexing method A can also be represented by FDMscheme A. The frequency division multiplexing method A refers to two TCI states corresponding to different frequency domain resources, but corresponding to the same redundancy version, that is, the terminal can assume that different TCI states are used to receive one PDSCH transmission occasion of one TB in different frequency domain resources.

[0073] (2) Frequency division multiplexing method B.

[0074] The frequency division multiplexing method B can also be denoted as FDM scheme B. The frequency division multiplexing method B refers to that two TCI states correspond to different frequency domain resources, but correspond to different redundancy versions, that is, the terminal can assume that two PDSCH transmission occasions of one TB are received in different frequency domain resources using different TCI states.

[0075] (3) Time division multiplexing method A.

[0076] The time division multiplexing method A can also be denoted as TDM scheme A. The time division multiplexing method A refers to that different TCI states correspond to different time domain resources.

[0077] (4) Single frequency network method A.

[0078] The single frequency network method A can also be denoted as SFN-scheme A. The single frequency network method A refers to that if the network device indicates at least two TCI states, the terminal assumes that the DMRS port used to transmit the PDSCH is quasi co-located with the reference signal corresponding to the at least two TCI states.

[0079] (5) Single frequency network method B.

[0080] The single frequency network method B can also be denoted as SFN-scheme B. The single frequency network method B refers to that if the network device indicates at least two TCI states, the terminal assumes that the DMRS port used to transmit the PDSCH is quasi co-located with the reference signal corresponding to the at least two TCI states, except for the quasi co-location parameters of the last TCI state: {Doppler shift, Doppler spread}.

[0081] (6) Transmission method based on two code division multiplexing CDM groups.

[0082] The DMRS port used to transmit the PDSCH corresponds to at least two CDM (Code Division Multiplexing) groups, and the TCI states corresponding to the at least two CDM groups are different.

[0083] In the embodiments of the present application, if the terminal determines that the PDSCH transmission method indicated by the first indication information is any one of the above-mentioned six PDSCH transmission methods, the terminal can determine that the first information field is included in the first DCI.

[0084] It should be noted that the embodiment of the present application is an example of determining that the first DCI includes the first information field when the terminal determines that the PDSCH transmission method indicated by the first indication information is the target PDSCH transmission method. In another embodiment, the terminal also determines that the first DCI does not include the first information field.

[0085] Optionally, in the case where the first indication information does not indicate the target PDSCH transmission method, the terminal determines that the first DCI does not include the first information field.

[0086] In the embodiment of the present application, only in the case where the first indication information indicates the target PDSCH transmission method, the terminal determines that the first DCI includes the first information field. If the first indication information does not indicate the target PDSCH transmission method, the terminal determines that the first DCI does not include the first information field.

[0087] It should be noted that the embodiment of the present application is an example of determining whether the first indication information indicates the target PDSCH transmission method. In another embodiment, the terminal can also determine that the first DCI does not include the first information field in other ways.

[0088] Optionally, in the case where the first indication information is not received, the terminal determines that the first DCI does not include the first information field. That is, if the terminal does not receive the first indication information, it means that the network device does not indicate to the terminal whether the first information field is included in the first DCI through the first indication information, and the terminal can determine that the first DCI does not include the first information field.

[0089] The embodiment of the present application provides a scheme for determining whether the first DCI includes the first information field according to the PDSCH transmission method indicated by the first indication information, which ensures the reliability of determining whether the first DCI includes the first information field, improves the accuracy of the terminal decoding the first DCI, and further ensures the reliability of determining the PDCCH and the corresponding PDSCH transmission carrying the first DCI.

[0090] Figure 3 The embodiment illustrates the terminal receiving the first indication information. The following describes how the terminal determines whether the first DCI includes the first information field according to the first indication information.

[0091] In some embodiments, the first indication information is carried in RRC (Radio Resource Control) signaling, which is used to indicate whether the first information field is included in the first DCI. That is, the information in the RRC signaling directly carries information used to indicate whether the first information field is included in the first DCI. For example, the RRC signaling indicates whether the first information field is included in the first DCI by 1 bit. If the 1 bit in the RRC signaling is 1, it indicates that the first information field is included in the first DCI, and if the 1 bit in the RRC signaling is 0, it indicates that the first information field is included in the first DCI. For example, the RRC signaling indicates information that the first information field is included in the first DCI by enable, and / or indicates information that the first information field is not included in the first DCI by disable.

[0092] In the scheme provided by the embodiments of the present application, the terminal can determine whether the first information field is included in the first DCI according to the first indication information, which ensures the reliability of the terminal determining whether the first information field is included in the first DCI, improves the accuracy of the terminal decoding the first DCI, and further ensures the reliability of determining the PDCCH and the corresponding PDSCH receiving the first DCI.

[0093] Figure 3 In the embodiments shown, it is proposed whether the first information field is included in the first DCI, and the parameters included in the first DCI are described below.

[0094] In some embodiments, the first DCI includes downlink resource allocation information, or the first DCI does not include downlink resource allocation information.

[0095] The downlink resource configuration information refers to information for configuring resources for downlink transmission for the terminal.

[0096] Optionally, the downlink resource allocation information includes at least one of the following:

[0097] (1) Time domain resource information for PDSCH.

[0098] The time domain resource information is used to indicate time domain resources, that is, the time domain resource information indicates time domain resources for PDSCH.

[0099] (2) Modulation and coding mode for PDSCH.

[0100] (3) Redundancy version for PDSCH.

[0101] (4) Frequency domain resource information for PDSCH.

[0102] The frequency domain resource information is used to indicate a frequency domain resource, that is, the frequency domain resource information indicates a frequency domain resource for the PDSCH.

[0103] (5) HARQ (Hybrid Automatic Repeat reQuest, mixed automatic repeat request) processing number.

[0104] It should be noted that the embodiments of the present application are described by taking the above-mentioned several parameters as examples, and the present application is not limited to the above-mentioned several parameters, and other related parameters can also be included, and the embodiments of the present application are not limited.

[0105] In some embodiments, the first DCI without downlink resource allocation information has the following characteristics, that is, at least one of the following:

[0106] (1) The modulation and coding mode field for the PDSCH is all '1'.

[0107] (2) The redundancy version field for the PDSCH is all '1'.

[0108] (3) The NDI (New Data indicator) for indicating whether the PDSCH is new data is '0'.

[0109] (4) The frequency domain resource information allocation field for the PDSCH is all '0' or all '1'.

[0110] In the embodiments of the present application, the first DCI does not include downlink resource allocation information, that is, at least one of the above-mentioned four information fields in the first DCI is the above-mentioned special bit value. For example, the frequency domain resource information allocation field for the PDSCH in the first DCI is all '0' or all '1'.

[0111] It should be noted that the embodiments of the present application are described by taking the above-mentioned several parameters as examples, and the present application is not limited to the above-mentioned several parameters, and other related parameters can also be included, and the embodiments of the present application are not limited.

[0112] Optionally, the first DCI including the downlink resource allocation information has at least one of the following characteristics:

[0113] (1) The modulation and coding mode field for the PDSCH is not all '1'.

[0114] (2) The redundancy version field for the PDSCH is not all '1'.

[0115] (3) The NDI (New Data indicator) is not '0' to indicate whether the PDSCH is for new data.

[0116] (4) The frequency domain resource information allocation field for the PDSCH is not all '0' or all '1'.

[0117] Figure 3 The embodiments shown propose that the second indication information can indicate N TCI states, and the following describes how the second indication information indicates the N TCI states.

[0118] In some embodiments, the second indication information is carried in a first MAC CE (Medium Access Control Control Element), and the first MAC CE is used to indicate the N TCI states.

[0119] Optionally, the first MAC CE is used to indicate that the N TCI states correspond to one code point in a TCI field of a first DCI (Downlink Control Information). That is, only the first MAC CE is sent without sending the DCI, and the N TCI states indicated in the first MAC CE correspond to only one code point in the TCI field of the DCI, so the base station does not need to additionally send the DCI to the terminal to indicate the code point, thereby saving signaling overhead.

[0120] In some embodiments, the second indication information is carried in a second MAC CE and a second DCI, the second MAC CE is used to indicate that the N TCI states correspond to at least two code points in a TCI field of the second DCI, and the second DCI is used to indicate one of the at least two code points. That is, the second MAC CE and the second DCI are used to indicate the second indication information, the second MAC CE indicates that the N TCI states correspond to at least two code points in the TCI field of the second DCI, and the second DCI is used to indicate the code point, and then the N TCI states corresponding to the code point are obtained by querying the second MAC CE. At this time, the second MAC CE can indicate multiple sets of code point configurations, and each set of code point configurations corresponds to N TCI states. It should be noted that each code point corresponds to N TCI states, and the N values corresponding to each code point can be the same or different.

[0121] In the embodiments of the present application, the first DCI and the second DCI can be the same DCI, or the first DCI and the second DCI can be different DCIs, and the embodiments of the present application are not limited.

[0122] It should be noted that the embodiment of the present application describes how the second indication information indicates the N TCI states, and in another embodiment, X TCI states of the N TCI states are used for transmission of at least one other channel / signal, X is a positive integer, and X is not greater than N.

[0123] The signal can be understood as a reference signal. The other channel includes a channel other than the PDSCH channel.

[0124] In the embodiment of the present application, the other channel can also use part or all of the N TCI states for transmission, and the other signal can also use part or all of the N TCI states for transmission.

[0125] In some embodiments, the other channel includes at least one of PUCCH, PUSCH or PDCCH. That is, at least one of PUCCH, PUSCH or PDCCH can use X TCI states of the N TCI states.

[0126] In some embodiments, the at least one signal includes at least one of CSI-RS or SRS. That is, at least one of CSI-RS or SRS can use X TCI states of the N TCI states.

[0127] It should be noted that the X TCI states in the present application are a subset of the N TCI states, that is, X can be less than or equal to N. Next, the X TCI states are described in detail.

[0128] In some embodiments, the other channel includes PDCCH, or the at least one signal is CSI-RS, and the X TCI states are a subset of the N TCI states. The TCI state includes joint TCI state and / or downlink TCI state.

[0129] In some embodiments, the other information includes at least one of PUSCH or PUCCH, or the at least one signal includes SRS, the X TCI states include joint TCI state and / or uplink TCI state, the N TCI states indicated by the second indication information include joint TCI state and / or uplink TCI state, and the X TCI states are a subset of the N TCI states.

[0130] It should be noted that the above embodiments can be split into new embodiments, or combined with other embodiments to form new embodiments, and the present application does not limit the combination of embodiments.

[0131] Figure 4 A flowchart of an information indication method provided by an exemplary embodiment of the present application is shown, which can be applied to, for example, Figure 1The method includes at least part of the following contents in the illustrated terminal:

[0132] Step 401: The terminal receives first indication information sent by the network device, and determines whether a first information field is included in the first DCI according to the first indication information, the first information field being used to indicate that the terminal uses M TCI states for physical downlink shared channel (PDSCH) reception, the TCI state including at least one of joint TCI state, downlink TCI state and uplink TCI state, and M being a positive integer.

[0133] The first DCI is information in which the network device configures parameters for the terminal.

[0134] The first indication information indicates whether the first information field is included in the first DCI. For example, if the first indication information is 1, it indicates that the first information field is included in the first DCI, and if the first indication information is 0, it indicates that the first information field is not included in the first DCI.

[0135] The first information field is used to indicate that the terminal uses M TCI states for PDSCH reception. That is, the terminal performs PDSCH reception based on the selected M TCI states.

[0136] In some embodiments, the terminal receives second indication information sent by the network device, and determines N TCI states based on the second indication information, N being a positive integer, and M being not greater than N, and the M TCI states belonging to a subset of the N TCI states indicated by the second indication information. That is, the first information field indicates that the terminal uses M TCI states of the N TCI states indicated by the second indication information for PDSCH reception, and the terminal selects M TCI states from the N TCI states indicated by the second indication information for PDSCH reception.

[0137] The second indication information is used to indicate N TCI states. That is, the network device sends the second indication information indicating N TCI states to the terminal, and the terminal determines the N TCI states configured by the network device for the terminal based on the second indication information after receiving the second indication information.

[0138] For example, the N TCI states indicated by the second indication information include TCI state #1, TCI state #2, TCI state #3, TCI state #4, TCI state #5 and TCI state #6, and the M TCI states indicated by the first information field are TCI state #1, TCI state #2, TCI state #4 and TCI state #5 in the N TCI states.

[0139] For example, the N TCI states indicated by the second indication information include TCI state #1 and TCI state #2, and the M TCI states indicated by the first information field are the TCI state #1 in the N TCI states.

[0140] For example, the N TCI states indicated by the second indication information include TCI state #1, TCI state #2, TCI state #3, and TCI state #4, and the M TCI states indicated by the first information field are the TCI state #1 and the TCI state #2 in the N TCI states.

[0141] The TCI state includes at least one of a joint TCI state, a downlink TCI state, and an uplink TCI state. The joint TCI state can be used for both uplink transmission and downlink transmission. The uplink TCI state is used for uplink transmission. The downlink TCI state is used for downlink transmission.

[0142] In the embodiments of the present application, the network device sends first indication information to the terminal to indicate whether the first information field is included in the first DCI. After receiving the first indication information, the terminal can determine whether the first information field is included in the first DCI according to the first indication information, and then determine whether the M TCI states used can be determined based on the first information field.

[0143] The present application provides a scheme for determining whether an information field indicating the used TCI state is included in the control information through indication information, ensuring the accuracy of decoding the control information, and then improving the accuracy of determining the TCI state to ensure the reliability of transmission.

[0144] Figure 4 The embodiments shown above illustrate the terminal receiving the first indication information. In addition, the terminal can also determine whether the first information field is included in the first DCI according to the first indication information. The following describes how the terminal determines whether the first information field is included in the first DCI according to the first indication information.

[0145] In some embodiments, the first indication information is used to indicate the target PDSCH transmission method, and the terminal can determine whether the first information field is included in the first DCI according to whether the first indication information indicates the target PDSCH transmission method.

[0146] In the case where the first indication information indicates the target PDSCH transmission method, it is determined that the first information field is included in the first DCI. That is, if the PDSCH transmission method indicated by the first indication information is the target PDSCH transmission method, it means that the first information field is included in the first DCI.

[0147] The target PDSCH transmission method refers to a PDSCH transmission method indicated by the network device for the terminal to use at least two TCI states.

[0148] Optionally, the target PDSCH transmission method comprises at least one of the following:

[0149] (1) Frequency division multiplexing method A.

[0150] The frequency division multiplexing method A can also be denoted as FDM scheme A. The frequency division multiplexing method A refers to two TCI states corresponding to different frequency domain resources, but corresponding to the same redundancy version, that is, the terminal can assume that different TCI states are used to receive one PDSCH transmission occasion of one TB in different frequency domain resources.

[0151] (2) Frequency division multiplexing method B.

[0152] The frequency division multiplexing method B can also be denoted as FDM scheme B. The frequency division multiplexing method B refers to two TCI states corresponding to different frequency domain resources, but corresponding to different redundancy versions, that is, the terminal can assume that different TCI states are used to receive two PDSCH transmission occasions of one TB in different frequency domain resources.

[0153] (3) Time division multiplexing method A.

[0154] The time division multiplexing method A can also be denoted as TDM scheme A. The time division multiplexing method A refers to different TCI states corresponding to different time domain resources.

[0155] (4) Single frequency network method A.

[0156] The single frequency network method A can also be denoted as SFN-scheme A. The single frequency network method A refers to if the network device indicates at least two TCI states, the terminal assumes that the DMRS port used to transmit the PDSCH is quasi co-located with the reference signal corresponding to the at least two TCI states.

[0157] (5) Single frequency network method B.

[0158] The single frequency network method B can also be denoted as SFN-scheme B. The single frequency network method B refers to if the network device indicates at least two TCI states, the terminal assumes that the DMRS port used to transmit the PDSCH is quasi co-located with the reference signal corresponding to the at least two TCI states, except for the quasi co-location parameters: {Doppler shift, Doppler spread} of the last TCI state.

[0159] (6) Transmission method based on two code division multiplexing CDM groups.

[0160] The DMRS port used for transmitting the PDSCH corresponds to at least two CDM groups, and the at least two CDM groups correspond to different TCI states.

[0161] In the embodiment of the present application, if the terminal determines that the PDSCH transmission method indicated by the first indication information is any one of the above six PDSCH transmission methods, the terminal can determine that the first information field is included in the first DCI.

[0162] It should be noted that the embodiment of the present application is described by taking the terminal as an example when the terminal determines that the PDSCH transmission method indicated by the first indication information is the target PDSCH transmission method, and determines that the first DCI includes the first information field. In another embodiment, the terminal also determines that the first DCI does not include the first information field.

[0163] Optionally, in the case where the first indication information does not indicate the target PDSCH transmission method, the terminal determines that the first information field is not included in the first DCI.

[0164] In the embodiment of the present application, only in the case where the first indication information indicates the target PDSCH transmission method, the terminal determines that the first information field is included in the first DCI. If the first indication information does not indicate the target PDSCH transmission method, the terminal determines that the first information field is not included in the first DCI.

[0165] It should be noted that the embodiment of the present application is described by taking the first indication information as an example whether the first indication information indicates the target PDSCH transmission method. In another embodiment, the terminal can also determine that the first DCI does not include the first information field in other ways.

[0166] Optionally, in the case where the first indication information is not received, the terminal determines that the first information field is not included in the first DCI. That is, if the terminal does not receive the first indication information, it means that the network device does not indicate to the terminal whether the first information field is included in the first DCI through the first indication information, and the terminal can determine that the first information field is not included in the first DCI.

[0167] The embodiment of the present application provides a scheme for determining whether the first information field is included in the first DCI according to the PDSCH transmission method indicated by the first indication information, which ensures the reliability of determining whether the first information field is included in the first DCI, improves the accuracy of the terminal decoding the first DCI, and further ensures the reliability of determining the PDCCH and the corresponding PDSCH transmission carrying the first DCI.

[0168] Figure 4 The embodiment shown illustrates the terminal receiving the first indication information. The following describes how the terminal determines whether the first information field is included in the first DCI according to the first indication information.

[0169] In some embodiments, the first indication information is carried in RRC signaling, which is used to indicate whether the first information field is included in the first DCI. That is, the information used to indicate whether the first information field is included in the first DCI is directly carried in the RRC signaling. For example, the RRC signaling indicates whether the first information field is included in the first DCI by 1 bit. If the 1 bit in the RRC signaling is 1, it indicates that the first information field is included in the first DCI, and if the 1 bit in the RRC signaling is 0, it indicates that the first information field is included in the first DCI. For example, the RRC signaling indicates the information that the first information field is included in the first DCI by enable, and / or indicates the information that the first information field is not included in the first DCI by disable.

[0170] In the scheme provided by the embodiments of the present application, the terminal can determine whether the first information field is included in the first DCI according to the first indication information, which ensures the reliability of the terminal determining whether the first information field is included in the first DCI, improves the accuracy of the terminal decoding the first DCI, and further ensures the reliability of determining the PDCCH and the corresponding PDSCH transmission carrying the first DCI.

[0171] Figure 4 In the embodiments shown, it is proposed whether the first information field is included in the first DCI, and the parameters included in the first DCI are described below.

[0172] In some embodiments, the first DCI includes downlink resource allocation information, or the first DCI does not include downlink resource allocation information.

[0173] The downlink resource configuration information refers to information for configuring resources for downlink transmission for the terminal.

[0174] Optionally, the downlink resource allocation information includes at least one of the following:

[0175] (1) Time domain resource information for PDSCH.

[0176] The time domain resource information is used to indicate time domain resources, that is, the time domain resource information indicates time domain resources for PDSCH.

[0177] (2) Modulation and coding mode field for PDSCH.

[0178] (3) Redundancy version for PDSCH.

[0179] (4) Frequency domain resource information for PDSCH.

[0180] The frequency domain resource information is used to indicate frequency domain resources, that is, the frequency domain resource information indicates the frequency domain resources used for PDSCH.

[0181] (5) HARQ (Hybrid Automatic Repeat reQuest) processing number.

[0182] It should be noted that the embodiments of this application are illustrated using the parameters exemplified above, but this application is not limited to the parameters exemplified above, and may also include other related parameters. The embodiments of this application are not limited.

[0183] In some embodiments, the first DCI, which does not include downlink resource allocation information, has the following characteristics, namely, including at least one of the following:

[0184] (1) The modulation and coding scheme field used for PDSCH is all '1'.

[0185] (2) The redundant version field used for PDSCH is all '1'.

[0186] (3) The NDI (New Data indicator) used to indicate whether PDSCH is new data is '0'.

[0187] (4) The frequency domain resource information allocation field used for PDSCH is either all '0' or all '1'.

[0188] In this embodiment, the first DCI does not include downlink resource allocation information, meaning that the first DCI includes at least one of the above four information fields with the aforementioned special bit values. For example, the frequency domain resource allocation field used for PDSCH in the first DCI is all '0' or all '1'.

[0189] It should be noted that the embodiments in this application are described using the features of a first DCI that does not include downlink resource allocation information as an example. In other embodiments, the features of a first DCI that includes downlink resource allocation information are the opposite of those of the first DCI that does not include downlink resource allocation information.

[0190] Optionally, the first DCI, which includes downlink resource allocation information, has at least one of the following characteristics:

[0191] (1) The modulation and coding scheme field used for PDSCH is not all '1'.

[0192] (2) The redundant version field used for PDSCH is not all '1'.

[0193] (3) The NDI (New Data indicator) is not '0' to indicate whether the PDSCH is for new data.

[0194] (4) The frequency domain resource information allocation field for the PDSCH is not all '0' or all '1'.

[0195] Figure 4 The embodiments shown propose that the second indication information can indicate N TCI states, and the following describes how the second indication information indicates the N TCI states.

[0196] In some embodiments, the second indication information is carried in a first MAC CE (Medium Access Control Control Element), and the first MAC CE is used to indicate the N TCI states.

[0197] Optionally, the first MAC CE is used to indicate that the N TCI states correspond to one code point in a TCI field of a first DCI (Downlink Control Information). That is, only the first MAC CE is sent without sending the DCI, and the N TCI states indicated in the first MAC CE correspond to only one code point in the TCI field of the DCI, so the base station does not need to additionally send the DCI to the terminal to indicate the code point, thereby saving signaling overhead.

[0198] In some embodiments, the second indication information is carried in a second MAC CE and a second DCI, the second MAC CE is used to indicate that the N TCI states correspond to at least two code points in a TCI field of the second DCI, and the second DCI is used to indicate one of the at least two code points. That is, the second MAC CE and the second DCI are used to indicate the second indication information, the second MAC CE indicates that the N TCI states correspond to at least two code points in the TCI field of the second DCI, and the second DCI is used to indicate the code point, and then the N TCI states corresponding to the code point are obtained by querying the second MAC CE. At this time, the second MAC CE can indicate multiple sets of code point configurations, and each set of code point configurations corresponds to N TCI states. It should be noted that each code point corresponds to N TCI states, and the N values corresponding to each code point can be the same or different.

[0199] In the embodiments of the present application, the first DCI and the second DCI can be the same DCI, or the first DCI and the second DCI can be different DCIs, and the embodiments of the present application are not limited.

[0200] It should be noted that the embodiment of the present application describes how the second indication information indicates the N TCI states, and in another embodiment, X TCI states in the N TCI states are used for transmission of at least one other channel / signal, X is a positive integer, and X is not greater than N.

[0201] The signal can be understood as a reference signal. The other channel includes a channel other than the PDSCH channel.

[0202] In the embodiment of the present application, the other channel can also use part or all of the N TCI states for transmission, and the other signal can also use part or all of the N TCI states for transmission.

[0203] In some embodiments, the other channel includes at least one of PUCCH, PUSCH or PDCCH. That is, at least one of PUCCH, PUSCH or PDCCH can use X TCI states in the N TCI states.

[0204] In some embodiments, the at least one signal includes at least one of CSI-RS or SRS. That is, at least one of CSI-RS or SRS can use X TCI states in the N TCI states.

[0205] It should be noted that the X TCI states in the present application are a subset of the N TCI states, that is, X can be less than or equal to N. Next, the X TCI states are described in detail.

[0206] In some embodiments, the other channel includes PDCCH, or the at least one signal is CSI-RS, and the X TCI states are a subset of the N TCI states. The TCI state includes joint TCI state and / or downlink TCI state.

[0207] In some embodiments, the other information includes at least one of PUSCH or PUCCH, or the at least one signal includes SRS, the X TCI states include joint TCI state and / or uplink TCI state, the N TCI states indicated by the second indication information include joint TCI state and / or uplink TCI state, and the X TCI states are a subset of the N TCI states.

[0208] Figure 5 A flowchart of an information indication method provided by an exemplary embodiment of the present application is shown, which can be applied to, for example, Figure 1 The network device shown in the figure, the method includes at least part of the following content:

[0209] Step 501: The network device sends first indication information to the terminal, and the first indication information is used for the terminal to determine whether the first information field is included in the first DCI, the first information field is used for indicating the terminal to use M TCI states for PDSCH reception, the TCI state includes at least one of the joint TCI state, the downlink TCI state and the uplink TCI state, and M is a positive integer.

[0210] The first DCI refers to information of parameters configured by the network device for the terminal. Optionally, the first DCI is DCI (Downlink Control Information, first DCI), or other types of information.

[0211] The first indication information indicates whether the first information field is included in the first DCI.

[0212] The first information field refers to indicating the terminal to use M TCI states for PDSCH transmission. That is, the terminal performs PDSCH reception based on the M TCI states.

[0213] In some embodiments, the network device sends second indication information to the terminal, and the second indication information indicates N TCI states, N is a positive integer, M is not greater than N, and the M TCI states belong to a subset of the N TCI states indicated by the second indication information. That is, the first information field indicates the terminal to use M TCI states of the N TCI states indicated by the second indication information for PDSCH reception, and the terminal selects M TCI states from the N TCI states indicated by the second indication information for PDSCH reception.

[0214] The second indication information is used for indicating N TCI states. That is, the network device sends the second indication information indicating the N TCI states to the terminal, and the terminal can determine the N TCI states configured by the network device for the terminal based on the second indication information after receiving the second indication information.

[0215] For example, the N TCI states indicated by the second indication information include TCI state #1, TCI state #2, TCI state #3, TCI state #4, TCI state #5 and TCI state #6, and the M TCI states indicated by the first information field are TCI state #1, TCI state #2, TCI state #4 and TCI state #5 in the N TCI states.

[0216] For example, the N TCI states indicated by the second indication information include TCI state #1 and TCI state #2, and the M TCI states indicated by the first information field are TCI state #1 in the N TCI states.

[0217] For example, the N TCI states indicated by the second indication information include TCI state #1, TCI state #2, TCI state #3, and TCI state #4, and the M TCI states indicated by the first information field are TCI state #1 and TCI state #2 of the N TCI states.

[0218] The TCI state includes at least one of a joint TCI state, a downlink TCI state, and an uplink TCI state. The joint TCI state can be used for both uplink transmission and downlink transmission. The uplink TCI state is used for uplink transmission. The downlink TCI state is used for downlink transmission.

[0219] In the embodiments of the present application, the network device sends first indication information to the terminal to indicate whether the first information field is included in the first DCI. After receiving the first indication information, the terminal can determine whether the first information field is included in the first DCI, and further determine whether the M TCI states used can be determined based on the first information field.

[0220] The present application provides a scheme for determining whether the information field indicating the used TCI state is included in the control information through the indication information, ensuring the accuracy of decoding the control information, and further improving the accuracy of determining the TCI state to ensure the reliability of transmission.

[0221] Figure 5 The embodiments shown illustrate the terminal receiving the first indication information. In addition, the terminal will determine whether the first information field is included in the first DCI according to the first indication information. How the terminal determines whether the first information field is included in the first DCI according to the first indication information is described below.

[0222] In some embodiments, the first indication information is used to indicate a target PDSCH transmission method.

[0223] In the case where the first indication information indicates the target PDSCH transmission method, the first information field is included in the first DCI. That is, if the PDSCH transmission method indicated by the first indication information is the target PDSCH transmission method, it means that the first information field is included in the first DCI.

[0224] The target PDSCH transmission method refers to a PDSCH transmission method indicated by the network device for the terminal to use at least two TCI states.

[0225] Optionally, the target PDSCH transmission method includes at least one of the following:

[0226] (1) Frequency division multiplexing method A.

[0227] The frequency division multiplexing method A can also be denoted as FDM scheme A. The frequency division multiplexing method A refers to two TCI states corresponding to different frequency domain resources, but corresponding to the same redundancy version, that is, the terminal can assume that different TCI states are used to receive a PDSCH transmission occasion of one TB in different frequency domain resources.

[0228] (2) Frequency division multiplexing method B.

[0229] The frequency division multiplexing method B can also be denoted as FDM scheme B. The frequency division multiplexing method B refers to two TCI states corresponding to different frequency domain resources, but corresponding to different redundancy versions, that is, the terminal can assume that two PDSCH transmission occasions of one TB are received in different frequency domain resources using different TCI states.

[0230] (3) Time division multiplexing method A.

[0231] The time division multiplexing method A can also be denoted as TDM scheme A. The time division multiplexing method A refers to different TCI states corresponding to different time domain resources.

[0232] (4) Single frequency network method A.

[0233] The single frequency network method A can also be denoted as SFN-scheme A. The single frequency network method A refers to if the network device indicates at least two TCI states, the terminal assumes that the DMRS port used to transmit the PDSCH is quasi co-located with the reference signal corresponding to the at least two TCI states.

[0234] (5) Single frequency network method B.

[0235] The single frequency network method B can also be denoted as SFN-scheme B. The single frequency network method B refers to if the network device indicates at least two TCI states, the terminal assumes that the DMRS port used to transmit the PDSCH is quasi co-located with the reference signal corresponding to the at least two TCI states, except for the quasi co-location parameters: {Doppler shift, Doppler spread} of the last TCI state.

[0236] (6) Transmission method based on two code division multiplexing CDM groups.

[0237] The DMRS port used to transmit the PDSCH corresponds to at least two CDM groups, and the TCI states corresponding to the at least two CDM groups are different.

[0238] In the embodiment of the present application, if the terminal determines that the PDSCH transmission method indicated by the first indication information is any one of the above six PDSCH transmission methods, the terminal can determine that the first information field is included in the first DCI.

[0239] It should be noted that the embodiment of the present application is described by taking the terminal as an example when the terminal determines that the PDSCH transmission method indicated by the first indication information is the target PDSCH transmission method, and determines that the first information field is included in the first DCI. In another embodiment, the terminal also determines that the first information field is not included in the first DCI.

[0240] The embodiment of the present application provides a scheme for determining whether the first information field is included in the first DCI according to the PDSCH transmission method indicated by the first indication information, which ensures the reliability of determining whether the first information field is included in the first DCI, improves the accuracy of the terminal decoding the first DCI, and further ensures the reliability of determining the PDCCH carrying the first DCI and the corresponding PDSCH transmission.

[0241] Figure 5 The embodiment shown illustrates the network device sending the first indication information. The following describes how to determine whether the first information field is included in the first DCI according to the first indication information.

[0242] In some embodiments, the first indication information is carried in RRC signaling, and the RRC signaling is used to indicate whether the first information field is included in the first DCI. That is, the RRC signaling directly carries information for indicating whether the first information field is included in the first DCI. For example, the RRC signaling indicates the information for indicating whether the first information field is included in the first DCI by 1 bit. If the 1 bit in the RRC signaling is 1, it indicates that the first information field is included in the first DCI, and if the 1 bit in the RRC signaling is 0, it indicates that the first information field is included in the first DCI. For example, the RRC signaling indicates the information for indicating that the first information field is included in the first DCI by enable, and / or indicates the information for indicating that the first information field is not included in the first DCI by disable.

[0243] In the scheme provided by the embodiment of the present application, whether the first information field is included in the first DCI can be determined according to the first indication information, which ensures the reliability of the terminal determining whether the first information field is included in the first DCI, improves the accuracy of the terminal decoding the first DCI, and further ensures the reliability of determining the PDCCH carrying the first DCI and the corresponding PDSCH transmission.

[0244] Figure 5 In the embodiment shown, whether the first information field is included in the first DCI is proposed, and the following describes the parameters included in the first DCI.

[0245] In some embodiments, the first DCI includes downlink resource allocation information, or the first DCI does not include downlink resource allocation information.

[0246] The downlink resource configuration information refers to information for configuring resources for downlink transmission for the terminal.

[0247] Optionally, the downlink resource allocation information includes at least one of the following:

[0248] (1) Time domain resource information for PDSCH.

[0249] The time domain resource information is used to indicate time domain resources, that is, the time domain resource information indicates time domain resources for PDSCH.

[0250] (2) Modulation and coding scheme for PDSCH.

[0251] (3) Redundancy version for PDSCH.

[0252] (4) Frequency domain resource information for PDSCH.

[0253] The frequency domain resource information is used to indicate frequency domain resources, that is, the frequency domain resource information indicates frequency domain resources for PDSCH.

[0254] (5) HARQ processing number.

[0255] It should be noted that the embodiments of the present application are described by taking the above-mentioned several parameters as examples, and the present application is not limited to the above-mentioned several parameters, and other related parameters can also be included, and the embodiments of the present application are not limited.

[0256] In some embodiments, the first DCI without downlink resource allocation information has the following characteristics, that is, includes at least one of the following:

[0257] (1) The modulation and coding scheme domain for PDSCH is all '1'.

[0258] (2) The redundancy version domain for PDSCH is all '1'.

[0259] (3) The NDI (New Data indicator) for indicating whether PDSCH is new data is '0'.

[0260] (4) The frequency domain resource information allocation domain for PDSCH is all '0' or all '1'.

[0261] In the embodiments of the present application, the first DCI does not include downlink resource allocation information, that is, the first DCI includes at least one of the above-mentioned four information fields as the special bit value. For example, the frequency domain resource information allocation field for PDSCH in the first DCI is all '0' or all '1'.

[0262] It should be noted that the embodiments of the present application are described by taking the characteristics of the first DCI without downlink resource allocation information as an example. In other embodiments, the first DCI with downlink resource allocation information has the opposite characteristics of the first DCI without downlink resource allocation information.

[0263] Optionally, the first DCI with downlink resource allocation information has at least one of the following characteristics:

[0264] (1) The modulation and coding mode field for PDSCH is not all '1'.

[0265] (2) The redundancy version field for PDSCH is not all '1'.

[0266] (3) The NDI (New Data indicator) for indicating whether the PDSCH is new data is not '0'.

[0267] (4) The frequency domain resource information allocation field for PDSCH is not all '0' or all '1'.

[0268] Figure 5 The embodiments shown propose that the second indication information can indicate N TCI states, and the following describes how the second indication information indicates the N TCI states.

[0269] In some embodiments, the second indication information is carried in a first MAC CE (Medium Access Control Control Element), and the first MAC CE is used to indicate the N TCI states.

[0270] Optionally, the first MAC CE is used to indicate that one code point in the TCI field of the first DCI (Downlink Control Information, DCI) corresponds to the N TCI states. That is, only the first MAC CE is sent without sending the DCI, and the N TCI states indicated in the first MAC CE only correspond to one code point in the TCI field of the DCI, so the base station does not need to send the DCI to the terminal to indicate the code point, thereby saving signaling overhead.

[0271] In some embodiments, the second indication information is carried in a second MAC CE and a second DCI, the second MAC CE is used to indicate that the at least two code points in the TCI field of the second DCI correspond to the N TCI states respectively, and the second DCI is used to indicate one of the at least two code points. That is, the second MAC CE and the second DCI are used to indicate the second indication information at the same time, the second MAC CE indicates that the at least two code points in the TCI field of the second DCI correspond to the N TCI states respectively, and the second DCI is used to indicate the code point, and then the N TCI states corresponding to the code point are obtained by querying the second MAC CE. At this time, the second MAC CE can indicate a plurality of code point configurations, and each code point configuration corresponds to N TCI states. It should be noted that each code point corresponds to N TCI states, and the value of N corresponding to each code point can be the same or different.

[0272] In the embodiments of the present application, the first DCI and the second DCI can be the same DCI, or the first DCI and the second DCI can be different DCIs, which are not limited in the embodiments of the present application.

[0273] It should be noted that the embodiments of the present application describe how the second indication information indicates the N TCI states, and in another embodiment, X TCI states in the N TCI states are used for transmission of at least one other channel / signal, X is a positive integer, and X is not greater than N.

[0274] The signal can be understood as a reference signal. The other channel includes a channel other than the PDSCH channel.

[0275] In the embodiments of the present application, the other channel can also use part or all of the N TCI states for transmission, and the signal can also use part or all of the N TCI states for transmission.

[0276] In some embodiments, the other channel includes at least one of PUCCH, PUSCH or PDCCH. That is, at least one of PUCCH, PUSCH or PDCCH can use X TCI states in the N TCI states.

[0277] In some embodiments, the at least one signal includes at least one of CSI-RS or SRS. That is, at least one of CSI-RS or SRS can use X TCI states in the N TCI states.

[0278] It should be noted that the X TCI states in the present application are a subset of the N TCI states, that is, X can be less than or equal to N. Next, the X TCI states are described in detail.

[0279] In some embodiments, the other channel comprises a PDCCH, or the at least one signal is a CSI-RS, and the X TCI states are a subset of the N TCI states. The TCI states comprise joint TCI states and / or downlink TCI states.

[0280] In some embodiments, the other information comprises at least one of a PUSCH or a PUCCH, or the at least one signal comprises an SRS, the X TCI states comprise joint TCI states and / or uplink TCI states, the N TCI states indicated by the second indication information comprise joint TCI states and / or uplink TCI states, and the X TCI states are a subset of the N TCI states.

[0281] Figure 6 A block diagram of an information indication apparatus provided by one example embodiment of the present application is shown in FIG. 6. The apparatus comprises: Figure 6 The apparatus comprises:

[0282] The receiving module 601 is configured to receive first indication information sent by a network device.

[0283] The processing module 602 is configured to determine, according to the first indication information, whether a first information field is included in first DCI, the first information field being used to indicate that the terminal uses M TCI states to receive a PDSCH, the TCI states comprising at least one of joint TCI states, downlink TCI states and uplink TCI states, and M being a positive integer.

[0284] In some embodiments, the first indication information is used to indicate a target PDSCH transmission method, and the processing module 602 is configured to determine that the first information field is included in the first DCI when the first indication information indicates the target PDSCH transmission method.

[0285] In some embodiments, the target transmission method comprises at least one of:

[0286] a frequency division multiplexing method A;

[0287] a frequency division multiplexing method B;

[0288] a time division multiplexing method A;

[0289] a single frequency network method A;

[0290] a single frequency network method B;

[0291] a transmission method based on two CDM groups.

[0292] In some embodiments, the processing module 602 is configured to determine that the first information field is not included in the first DCI when the first indication information does not indicate the target PDSCH transmission method.

[0293] In some embodiments, the processing module 602 is configured to determine that the first information field is not included in the first DCI when the first indication information is not received.

[0294] In some embodiments, the first indication information is carried in RRC signaling, and the RRC signaling is used to indicate whether the first information field is included in the first DCI.

[0295] In some embodiments, the first DCI includes downlink resource allocation information or does not include the downlink resource allocation information.

[0296] In some embodiments, the first DCI that does not include the downlink resource allocation information includes at least one of the following:

[0297] The modulation and coding scheme field for the PDSCH is all '1';

[0298] The redundancy version field for the PDSCH is all '1';

[0299] The new data indicator (NDI) for indicating whether the PDSCH is new data is '0';

[0300] The frequency domain resource information allocation field for the PDSCH is all '0' or all '1'.

[0301] In some embodiments, the receiving module 601 is further configured to receive second indication information sent by a network device, the second indication information being used to indicate N TCI states, N being a positive integer, and M being not greater than N; and the M TCI states belonging to a subset of the N TCI states indicated by the second indication information.

[0302] In some embodiments, the second indication information is carried in a first medium access control (MAC) control element (CE), and the first MAC CE is used to indicate the N TCI states; or,

[0303] The second indication information is carried in a second MAC CE and a second DCI, the second MAC CE is used to indicate that at least two code points in a transmission configuration indication (TCI) field of the second DCI correspond to the N TCI states respectively, and the second DCI is used to indicate one of the at least two code points.

[0304] In some embodiments, X TCI states in the N TCI states are used for transmission of at least one other channel / signal, X being a positive integer, and X being not greater than N.

[0305] In some embodiments, the at least one other channel includes at least one of the following:

[0306] PUCCH;

[0307] PUSCH;

[0308] PDCCH.

[0309] In some embodiments, the at least one signal comprises at least one of:

[0310] CSI-RS;

[0311] SRS.

[0312] In some embodiments, the X TCI states are a subset of the N TCI states.

[0313] It should be noted that the apparatus provided in the above embodiments, when realizing its functions, only takes the above-mentioned division of each functional module as an example, and in actual application, the above-mentioned functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above-described functions. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0314] Figure 7 A block diagram of an information indication apparatus provided by an example embodiment of the present application is shown, referring to FIG. 7, Figure 7 The apparatus comprises:

[0315] The sending module 701 is configured to send first indication information to a terminal, wherein the first indication information is used by the terminal to determine whether a first information field is included in first DCI, and the first information field is used to instruct the terminal to use M TCI states for PDSCH reception, wherein the TCI states comprise at least one of joint TCI states, downlink TCI states and uplink TCI states, and M is a positive integer.

[0316] In some embodiments, the first indication information is used to indicate a PDSCH transmission method; and the first indication information indicates that a target PDSCH transmission method is used by the terminal to determine that the first DCI includes the first information field.

[0317] In some embodiments, the target transmission method comprises at least one of:

[0318] Frequency division multiplexing method A;

[0319] Frequency division multiplexing method B;

[0320] Time division multiplexing method A;

[0321] Single frequency network method A;

[0322] Single frequency network method B

[0323] Transmission method based on two code division multiplexing (CDM) groups.

[0324] In some embodiments, the first indication information is carried in RRC signaling used to indicate whether the first information field is included in the first DCI.

[0325] In some embodiments, the first DCI includes or does not include downlink resource allocation information.

[0326] In some embodiments, the first DCI that does not include the downlink resource allocation information includes at least one of the following:

[0327] The modulation and coding scheme field for PDSCH is all '1';

[0328] The redundancy version field for PDSCH is all '1';

[0329] The new data indicator (NDI) for indicating whether the PDSCH is new data is '0';

[0330] The frequency domain resource information allocation field for PDSCH is all '0' or all '1'.

[0331] In some embodiments, the sending module 701 is configured to send second indication information to the terminal, the second indication information being used to indicate N TCI states, N being a positive integer, and M being not greater than N; the M TCI states belonging to a subset of the N TCI states indicated by the second indication information.

[0332] In some embodiments, the second indication information is carried in a first medium access control (MAC) control element (CE), the first MAC CE being used to indicate the N TCI states; or,

[0333] The second indication information is carried in a second MAC CE and a second DCI, the second MAC CE being used to indicate the N TCI states corresponding to at least two code points in a TCI field of the second DCI, and the second DCI being used to indicate one of the at least two code points.

[0334] In some embodiments, X TCI states of the N TCI states are used for transmission of at least one other channel / other signal, X being a positive integer, and X being not greater than N.

[0335] In some embodiments, the at least one other channel includes at least one of the following:

[0336] PUCCH;

[0337] PUSCH;

[0338] PDCCH.

[0339] In some embodiments, the at least one signal comprises at least one of:

[0340] CSI-RS;

[0341] SRS.

[0342] In some embodiments, the X TCI states are a subset of the N TCI states.

[0343] It should be noted that the apparatus provided in the above embodiments, when realizing its functions, only takes the above-mentioned division of each functional module as an example, and in actual application, the above-mentioned functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above-described functions. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0344] Figure 8 A structural schematic diagram of a communication device provided by an example embodiment of the present application is shown, which includes a processor 801, a receiver 802, a transmitter 803, a memory 804 and a bus 805.

[0345] The processor 801 includes one or more processing cores. The processor 801 performs various functional applications and information processing by running software programs and modules.

[0346] The receiver 802 and the transmitter 803 can be implemented as a communication component, which can be a communication chip.

[0347] The memory 804 is connected to the processor 801 through the bus 805.

[0348] The memory 804 can be used to store at least one program code, and the processor 801 is configured to execute the at least one program code to implement each step in the above method embodiments.

[0349] In addition, the communication device can be a terminal or a network device. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: a magnetic or optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random access memory (SRAM), a read-only memory (ROM), a magnetic storage, a flash memory, a programmable read-only memory (PROM).

[0350] In an example embodiment, a computer readable storage medium is also provided, and the executable program code is stored in the readable storage medium, and the executable program code is loaded and executed by a processor to implement the information indication method performed by the communication device provided by each method embodiment.

[0351] In an example embodiment, a chip is provided, and the chip includes programmable logic circuit and / or program instructions, and when the chip is running on a terminal or network device, the chip is used to implement the information indication method provided by each method embodiment.

[0352] In an example embodiment, a communication system is provided, and the communication system includes a terminal and a network device, and the terminal is used to implement the information indication method as described above, and the network device is used to implement the information indication method as described above.

[0353] In an example embodiment, a computer program product is provided, and when the computer program product is executed by a processor of a terminal or network device, the computer program product is used to implement the information indication method provided by each method embodiment.

[0354] Those skilled in the art can understand that all or part of the steps of the above-mentioned embodiments can be completed by hardware, or by program instructing relevant hardware to complete, and the program can be stored in a computer readable storage medium, and the storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0355] The above only describes optional embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An information indicating method characterized by comprising: The method is performed by a terminal, and the method comprises: receiving RRC signaling sent by a network device, the RRC signaling indicating, by carrying first indication information, whether a first information field is included in first downlink control information DCI, the first information field being used to indicate that the terminal uses M TCI states for reception of a physical downlink shared channel PDSCH, the TCI states including at least one of joint TCI states, downlink TCI states and uplink TCI states, M being a positive integer; in the case where the first indication information is not received, determining that the first information field is not included in the first DCI; in the case where the first indication information is received, determining that the first information field is included in the first DCI.

2. The method of claim 1, wherein, The first indication information is used to indicate a target PDSCH transmission method; and the determining, according to the first indication information, whether the first information field is included in the first DCI comprises: in the case where the first indication information indicates the target PDSCH transmission method, determining that the first information field is included in the first DCI.

3. The method of claim 2, wherein, The target PDSCH transmission method comprises at least one of: a frequency division multiplexing method A; a frequency division multiplexing method B; a time division multiplexing method A; a single frequency network method A; a single frequency network method B; a transmission method based on two code division multiplexing CDM groups.

4. The method of claim 2, wherein, The determining, according to the first indication information, whether the first information field is included in the first DCI comprises: in the case where the first indication information does not indicate the target PDSCH transmission method, determining that the first information field is not included in the first DCI.

5. The method according to any one of claims 1 to 4, characterized in that, The first DCI includes or does not include downlink resource allocation information.

6. The method of claim 5, wherein, The first DCI that does not include the downlink resource allocation information comprises at least one of: a modulation and coding scheme field for PDSCH being all '1'; a redundancy version field for PDSCH being all '1'; a new data indicator NDI for indicating whether PDSCH is new data being '0'; a frequency domain resource information allocation field for PDSCH being all '0' or all '1'.

7. The method according to any one of claims 1 to 6, characterized in that, The method further comprises: receiving second indication information sent by the network device, the second indication information being used to indicate N TCI states, N being a positive integer and M not being greater than N; and the M TCI states belonging to a subset of the N TCI states.

8. The method of claim 7, wherein: the second indication information is carried in a first medium access control layer control element MAC CE, the first MAC CE being used to indicate the N TCI states; or the second indication information is carried in a second MAC CE and second DCI, the second MAC CE being used to indicate that N TCI states corresponding to at least two code points in a transmission configuration indication TCI field of the second DCI, and the second DCI being used to indicate one of the at least two code points.

9. The method of claim 8, wherein, X TCI states in the N TCI states are used for transmission of at least one other channel / signal, X being a positive integer and X not being greater than N.

10. The method of claim 9, wherein, the at least one other channel comprises at least one of: Physical Uplink Control Channel, PUCCH; Physical Uplink Shared Channel, PUSCH; Physical Downlink Control Channel, PDCCH.

11. The method of claim 9, wherein, The at least one signal comprises at least one of: Channel State Information Reference Signal, CSI-RS; Sounding Reference Signal, SRS.

12. The method of claim 9, wherein, The X TCI states are a subset of the N TCI states.

13. An information indicating method characterized by comprising: The method is performed by a network device, and the method comprises: sending, to a terminal, RRC signaling that indicates, by carrying first indication information, whether a first information field is included in first Downlink Control Information, DCI, the first indication information being used by the terminal to determine whether the first information field is included in the first DCI, the first information field being used to instruct the terminal to use M TCI states for reception of a Physical Downlink Shared Channel, PDSCH, the TCI states comprising at least one of a joint TCI state, a downlink TCI state, and an uplink TCI state, M being a positive integer; wherein, in a case where the terminal does not receive the first indication information, the terminal determines that the first information field is not included in the first DCI; and in a case where the terminal receives the first indication information, the terminal determines that the first information field is included in the first DCI.

14. The method of claim 13, wherein, The first indication information is used to indicate a target PDSCH transmission method; and the first indication information indicates that the target PDSCH transmission method is used by the terminal to determine that the first DCI includes the first information field.

15. The method of claim 14, wherein, The target PDSCH transmission method comprises at least one of: a frequency division multiplexing method A; a frequency division multiplexing method B; a time division multiplexing method A; a single frequency network method A; a single frequency network method B; a transmission method based on two code division multiplexing, CDM, groups.

16. The method according to any one of claims 13 to 15, characterized in that, The first DCI includes or does not include downlink resource allocation information.

17. The method of claim 16, wherein, The first DCI that does not include the downlink resource allocation information comprises at least one of: a modulation and coding scheme field for PDSCH being all ‘1’s; a redundancy version field for PDSCH being all ‘1’s; a new data indicator, NDI, for indicating whether PDSCH is new data being ‘0’; a frequency domain resource information allocation field for PDSCH being all ‘0’s or all ‘1’s.

18. The method of any one of claims 13 to 17, wherein, The method further comprises: sending, to the terminal, second indication information that is used to indicate N TCI states, N being a positive integer and M being not greater than N; and the M TCI states belonging to a subset of the N TCI states.

19. The method of claim 18, wherein: the second indication information is carried in a first Medium Access Control layer Control Element, MAC CE, the first MAC CE being used to indicate the N TCI states; or the second indication information is carried in a second MAC CE and a second DCI, the second MAC CE being used to indicate that N TCI states corresponding to at least two code points in a TCI field of the second DCI, respectively, the second DCI being used to indicate one of the at least two code points.

20. The method of claim 19, wherein, X TCI states of the N TCI states are used for transmission of at least one other channel / other signal, X is a positive integer, and X is not greater than N.

21. The method of claim 20, wherein, The at least one other channel includes at least one of the following: PUCCH; PUSCH; PDCCH.

22. The method of claim 20, wherein, The at least one signal includes at least one of the following: Channel state information reference signal (CSI-RS); Sounding reference signal (SRS).

23. The method of claim 21, wherein, The X TCI states are a subset of the N TCI states.

24. An information indicating device, characterized by comprising: The apparatus is executed by a terminal, and the apparatus includes: A receiving module configured to receive RRC signaling sent by a network device, the RRC signaling indicating, by carrying first indication information, whether a first information field is included in first downlink control information (DCI), the first information field being used to indicate that the terminal uses M TCI states for reception of a physical downlink shared channel (PDSCH), the TCI state including at least one of a joint TCI state, a downlink TCI state, and an uplink TCI state, M being a positive integer; A processing module configured to, in a case where the first indication information is not received, determine that the first information field is not included in the first DCI; and in a case where the first indication information is received, determine that the first information field is included in the first DCI.

25. An information indicating device, characterized by comprising: The apparatus is executed by a network device, and the apparatus includes: A sending module configured to send, to a terminal, RRC signaling, the RRC signaling indicating, by carrying first indication information, whether a first information field is included in first downlink control information (DCI), the first indication information being used by the terminal to determine whether the first information field is included in the first DCI, the first information field being used to indicate that the terminal uses M TCI states for reception of a physical downlink shared channel (PDSCH), the TCI state including at least one of a joint TCI state, a downlink TCI state, and an uplink TCI state, M being a positive integer; In a case where the first indication information is not received by the terminal, the terminal determines that the first information field is not included in the first DCI; and in a case where the first indication information is received by the terminal, the terminal determines that the first information field is included in the first DCI.

26. A terminal, characterized by The terminal includes: A processor; A transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the information indication method according to any one of claims 1 to 12.

27. A network device, comprising: The network device includes: A processor; A transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the information indication method according to any one of claims 13 to 23.

28. A communication system, characterized by The communication system includes a terminal configured to implement the information indication method according to any one of claims 1 to 12, and a network device configured to implement the information indication method according to any one of claims 13 to 23.

29. A computer-readable storage medium, characterized in that, The readable storage medium stores executable program code, which is loaded and executed by a processor to implement the information indication method according to any one of claims 1 to 23.

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