Data transmission method and apparatus, related device, and storage medium

Abstract

A data transmission method and device, a first communication device, a second communication device, and a storage medium are disclosed. The method comprises: receiving, by the first communication device, first information from a network device; the first information is used to indicate a first spatial relationship; and the first spatial relationship is used for transmission of control information and / or data information.

Description

Technical Field

[0001] This invention relates to the field of wireless communication, and more particularly to a data transmission method, apparatus, related equipment, and storage medium. Background Technology

[0002] The 3rd Generation Partnership Project (3GPP) has recently begun further enhancing Multiple Input Multiple Output (MIMO) technology. New research requirements primarily focus on enhancing higher mobility, considering improvements to data channels, control channels, uplink and downlink, and intraband carrier aggregation (CA). The design goal is to enable rapid updates to the data direction of the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH), ensuring good data transmission even at high speeds, thus supporting higher mobility.

[0003] Currently, in related technologies, the spatial relationship between the Control Resource Set (CORESET) and the PDSCH is updated through an independent Medium Access Control (MAC) control element (CE). Furthermore, the spatial relationship needs to wait before it becomes effective (i.e., is used). Therefore, changes in the spatial relationship can cause delays. Summary of the Invention

[0004] To address the existing technical problems, embodiments of the present invention provide a data transmission method, apparatus, related equipment, and storage medium.

[0005] The technical solution of this invention is implemented as follows:

[0006] At least one embodiment of the present invention provides a data transmission method applied to a first communication device, comprising:

[0007] Receive first information from a network device; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0008] Furthermore, according to at least one embodiment of the present invention, the method further includes:

[0009] Receive time information; the time information is used to indicate the usage time of the first spatial relationship.

[0010] Furthermore, according to at least one embodiment of the present invention, the time information includes: a slot offset indicated in the Time Domain Resource Assignment (TDRA).

[0011] Furthermore, according to at least one embodiment of the present invention, the method further includes:

[0012] Send feedback information corresponding to the first information; the feedback information is used to explain that the first spatial relationship is used.

[0013] Furthermore, according to at least one embodiment of the present invention, receiving the first information from the network device includes at least one of the following:

[0014] The transmission configuration indication (TCI-States) in the downlink control information (DCI, Downlink Control Information) sent by the receiving network device using the first CORESET scheduled PDCCH;

[0015] The receiving network device uses the TCI-States in the DCI sent by the first PDCCH;

[0016] The first CORESET and / or the first PDCCH are configured based on RRC or MAC CE.

[0017] The first CORESET and / or the first PDCCH are used to indicate the first spatial relationship.

[0018] Furthermore, according to at least one embodiment of the present invention, the first spatial relationship is used to indicate at least one of the following:

[0019] Spatial relationship of PDSCH scheduled on the second CORESET and the second CORESET;

[0020] Spatial relationship of PDSCH scheduled on the second PDCCH and the second PDCCH.

[0021] Furthermore, according to at least one embodiment of the present invention, the second CORESET includes at least one of the following: a CORESET configured for at least one terminal, a CORESET configured by the system, and a CORESET indicated by the system.

[0022] Furthermore, according to at least one embodiment of the present invention, the method further includes:

[0023] According to the first spatial relationship, second information is received; the second information includes at least one of the following: second CORESET, second PDCCH; the second information does not contain information for indicating the spatial relationship.

[0024] The PDSCH scheduled on the second information is demodulated using the first spatial relationship.

[0025] Furthermore, according to at least one embodiment of the present invention, the method further includes:

[0026] The PDSCH is received on at least one symbol after the second information is received.

[0027] Furthermore, according to at least one embodiment of the present invention, the method further includes at least one of the following:

[0028] According to the first spatial relationship, feedback information is sent to the network device for the PDSCH;

[0029] According to the first spatial relationship, send PUCCH information or uplink control information.

[0030] Furthermore, according to at least one embodiment of the present invention, the method further includes:

[0031] Before receiving the second spatial relationship indicated by the third information, control information and / or data information are transmitted according to the first spatial relationship indicated by the first information.

[0032] Furthermore, according to at least one embodiment of the present invention, the method further includes:

[0033] According to the first spatial relationship, transmit the specified information on the first channel;

[0034] The transmission of specified information includes at least one of the following: transmission of feedback information, transmission of channel state information, transmission of channel sounding reference signal (SRS), transmission of PUCCH data, and transmission of PUSCH data.

[0035] Furthermore, according to at least one embodiment of the present invention, the corresponding spatial relationship includes at least one of the following:

[0036] Quasi-co-location (QCL), Transmission Configuration Indication (TCI), Doppler translation, Doppler spread, average delay, delay spread, spatial receive parameters, antenna port quasi-co-location, spatial domain transmit filtering, spatial domain receive filtering, spatial relationship information, spatial filtering, spatial transmit filtering, and spatial configuration information.

[0037] The QCL includes at least: the type of QCL and the assumed QCL;

[0038] The TCI includes at least: TCI state.

[0039] At least one embodiment of the present invention provides a data transmission method applied to a second communication device, comprising:

[0040] Send first information to the terminal; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0041] Furthermore, according to at least one embodiment of the present invention, the method further includes:

[0042] Send time information, which is used to indicate the usage time of the first spatial relationship.

[0043] Furthermore, according to at least one embodiment of the present invention, the time information includes: a time slot offset indicated in the Time Domain Resource Allocation (TDRA).

[0044] Furthermore, according to at least one embodiment of the present invention, the method further includes:

[0045] Receive feedback information from the terminal regarding the first information, and determine that the first spatial relationship is used.

[0046] Furthermore, according to at least one embodiment of the present invention, sending the first information to the terminal includes at least one of the following:

[0047] The PDCCH resources scheduled by the first CORESET are used to send TCI-States in DCI to the terminal;

[0048] The first PDCCH resource is used to send TCI-States from the DCI to the terminal;

[0049] Wherein, the first CORESET and / or the first PDCCH are configured based on RRC or MAC CE;

[0050] The first CORESET and / or the first PDCCH are used to indicate the first spatial relationship.

[0051] Furthermore, according to at least one embodiment of the present invention, the first spatial relationship is used to indicate at least one of the following:

[0052] Indicates the spatial relationship of PDSCHs scheduled on the second CORESET and the second CORESET;

[0053] Indicates the spatial relationship of PDSCHs scheduled on the second PDCCH and the second PDCCH.

[0054] Furthermore, according to at least one embodiment of the present invention, the second CORESET includes at least one of the following: a CORESET configured for at least one terminal, a CORESET configured by the system, and a CORESET indicated by the system.

[0055] Furthermore, according to at least one embodiment of the present invention, the method further includes:

[0056] The second information is sent according to the first spatial relationship; the second information does not contain information for indicating the spatial relationship; the second information includes at least one of the following: a second CORESET, a second PDCCH; the PDSCH scheduled on the second information is demodulated or transmitted using the first spatial relationship.

[0057] Furthermore, according to at least one embodiment of the present invention, the method further includes:

[0058] The PDSCH is transmitted on at least one symbol after the second information is sent.

[0059] Furthermore, according to at least one embodiment of the present invention, the method further includes at least one of the following:

[0060] According to the first spatial relationship, the receiving terminal sends feedback information to the PDSCH;

[0061] According to the first spatial relationship, receive PUCCH information.

[0062] Furthermore, according to at least one embodiment of the present invention, the method further includes:

[0063] Before receiving the feedback information, control information and / or data information are transmitted according to the previously indicated spatial relationship.

[0064] Furthermore, according to at least one embodiment of the present invention, the method further includes:

[0065] The receiving terminal sends control information in the first space and on the first channel;

[0066] The control information includes at least one of the following: feedback information, channel state information, SRS, PUCCH data, and PUSCH data.

[0067] Furthermore, according to at least one embodiment of the present invention, the spatial relationship includes at least one of the following parameters:

[0068] QCL, TCI, Doppler translation, Doppler spread, average delay, delay spread, spatial receiving parameters, antenna port quasi-co-location, spatial domain transmit filtering, spatial domain receive filtering, spatial relationship information, spatial filtering, spatial transmit filtering, spatial configuration information;

[0069] The QCL includes at least: the type of QCL and the assumed QCL;

[0070] The TCI includes at least: TCI state.

[0071] At least one embodiment of the present invention provides a data transmission apparatus, comprising:

[0072] The first receiving unit is configured to receive first information from a network device; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0073] Furthermore, according to at least one embodiment of the present invention, the first receiving unit is also configured to receive time information; the time information is used to indicate the usage time of the first spatial relationship.

[0074] Furthermore, according to at least one embodiment of the present invention, the time information includes: the time slot offset indicated in the TDRA.

[0075] Furthermore, according to at least one embodiment of the present invention, the apparatus further includes: a first transmitting unit, configured to transmit feedback information corresponding to the first information; the feedback information is used to explain that the first spatial relationship is used.

[0076] Furthermore, according to at least one embodiment of the present invention, the first receiving unit is configured to receive first information from a network device, including at least one of the following:

[0077] The receiving network device uses the PDCCH scheduled by the first CORESET to send the TCI-States in the DCI;

[0078] The receiving network device uses the TCI-States in the DCI sent by the first PDCCH;

[0079] The first CORESET and / or the first PDCCH are configured based on RRC or MAC CE.

[0080] The first CORESET and / or the first PDCCH are used to indicate the first spatial relationship.

[0081] Furthermore, according to at least one embodiment of the present invention, the first spatial relationship is used to indicate at least one of the following:

[0082] Spatial relationship of PDSCH scheduled on the second CORESET and the second CORESET;

[0083] Spatial relationship of PDSCH scheduled on the second PDCCH and the second PDCCH.

[0084] Furthermore, according to at least one embodiment of the present invention, the second CORESET includes at least one of the following: a CORESET configured for at least one terminal, a CORESET configured by the system, and a CORESET indicated by the system.

[0085] Furthermore, according to at least one embodiment of the present invention, the first receiving unit is also configured to receive second information according to the first spatial relationship; the second information includes at least one of the following: a second CORESET, a second PDCCH; the second information does not contain information for indicating the spatial relationship;

[0086] The PDSCH scheduled on the second information is demodulated using the first spatial relationship.

[0087] Furthermore, according to at least one embodiment of the present invention, the first receiving unit is also configured to receive the PDSCH on at least one symbol after receiving the second information.

[0088] Furthermore, according to at least one embodiment of the present invention, the first transmitting unit is also configured to perform at least one of the following:

[0089] According to the first spatial relationship, feedback information is sent to the network device for the PDSCH;

[0090] According to the first spatial relationship, send PUCCH information or uplink control information.

[0091] Furthermore, according to at least one embodiment of the present invention, the first receiving unit or the first sending unit is also configured to transmit control information and / or data information in accordance with the first spatial relationship indicated by the first information before receiving the second spatial relationship indicated by the third information.

[0092] Furthermore, according to at least one embodiment of the present invention, the first transmitting unit is also configured to transmit specified information on the first channel according to the first spatial relationship;

[0093] The transmission of specified information includes at least one of the following: transmission of feedback information, transmission of channel state information, transmission of channel sounding reference signal (SRS), transmission of PUCCH data, and transmission of PUSCH data.

[0094] Furthermore, according to at least one embodiment of the present invention, the corresponding spatial relationship includes at least one of the following:

[0095] QCL, TCI, Doppler translation, Doppler spread, average delay, delay spread, spatial receiving parameters, antenna port quasi-co-location, spatial domain transmit filtering, spatial domain receive filtering, spatial relationship information, spatial filtering, spatial transmit filtering, spatial configuration information;

[0096] The QCL includes at least: the type of QCL and the assumed QCL;

[0097] The TCI includes at least: TCI state.

[0098] In practical applications, the first sending unit and the first receiving unit can be implemented by the communication interface in the information transmission device.

[0099] To implement the method on the second communication device side of the present invention, the present invention also provides a data transmission device, disposed on the second communication device, such as... Figure 8 As shown, the device includes:

[0100] The second sending unit is used to send first information to the terminal; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0101] Furthermore, according to at least one embodiment of the present invention, the second transmitting unit is also configured to transmit time information, the time information being used to indicate the usage time of the first spatial relationship.

[0102] Furthermore, according to at least one embodiment of the present invention, the time information includes: the time slot offset indicated in the TDRA.

[0103] Furthermore, according to at least one embodiment of the present invention, the apparatus further includes: a second receiving unit, configured to receive feedback information from the terminal regarding the first information, and determine that the first spatial relationship is used.

[0104] Furthermore, according to at least one embodiment of the present invention, the second sending unit is configured to send first information to the terminal; specifically, it performs at least one of the following:

[0105] The PDCCH resources scheduled by the first CORESET are used to send TCI-States in DCI to the terminal;

[0106] The first PDCCH resource is used to send TCI-States from the DCI to the terminal;

[0107] Wherein, the first CORESET and / or the first PDCCH are configured based on RRC or MAC CE;

[0108] The first CORESET and / or the first PDCCH are used to indicate the first spatial relationship.

[0109] Furthermore, according to at least one embodiment of the present invention, the first spatial relationship is used to indicate at least one of the following:

[0110] Indicates the spatial relationship of PDSCHs scheduled on the second CORESET and the second CORESET;

[0111] Indicates the spatial relationship of PDSCHs scheduled on the second PDCCH and the second PDCCH.

[0112] Furthermore, according to at least one embodiment of the present invention, the second CORESET includes at least one of the following: a CORESET configured for at least one terminal, a CORESET configured by the system, and a CORESET indicated by the system.

[0113] Furthermore, according to at least one embodiment of the present invention, the second transmitting unit is configured to transmit second information according to the first spatial relationship; the second information does not contain information for indicating the spatial relationship; the second information includes at least one of the following: a second CORESET, a second PDCCH; the PDSCH scheduled on the second information is demodulated or transmitted using the first spatial relationship.

[0114] Furthermore, according to at least one embodiment of the present invention, the second transmitting unit is also configured to transmit the PDSCH on at least one symbol after transmitting the second information.

[0115] Furthermore, according to at least one embodiment of the present invention, the second receiving unit is also configured to perform at least one of the following:

[0116] According to the first spatial relationship, the receiving terminal sends feedback information to the PDSCH;

[0117] According to the first spatial relationship, receive PUCCH information.

[0118] Furthermore, according to at least one embodiment of the present invention, the second receiving unit or the second sending unit is also configured to transmit control information and / or data information according to the previously indicated spatial relationship before receiving the feedback information.

[0119] Furthermore, according to at least one embodiment of the present invention, the second receiving unit is configured to receive control information transmitted by the terminal in the first space and on the first channel;

[0120] The control information includes at least one of the following: feedback information, channel state information, SRS, PUCCH data, and PUSCH data.

[0121] Furthermore, according to at least one embodiment of the present invention, the spatial relationship includes at least one of the following parameters:

[0122] QCL, TCI, Doppler translation, Doppler spread, average delay, delay spread, spatial receiving parameters, antenna port quasi-co-location, spatial domain transmit filtering, spatial domain receive filtering, spatial relationship information, spatial filtering, spatial transmit filtering, spatial configuration information;

[0123] The QCL includes at least: the type of QCL and the assumed QCL;

[0124] The TCI includes at least: TCI state.

[0125] At least one embodiment of the present invention provides a data transmission apparatus, comprising:

[0126] The second sending unit is used to send first information to the terminal; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0127] Furthermore, according to at least one embodiment of the present invention, the second transmitting unit is also configured to transmit time information, the time information being used to indicate the usage time of the first spatial relationship.

[0128] Furthermore, according to at least one embodiment of the present invention, the time information includes: the time slot offset indicated in the TDRA.

[0129] Furthermore, according to at least one embodiment of the present invention, the apparatus further includes: a second receiving unit, configured to receive feedback information from the terminal regarding the first information, and determine that the first spatial relationship is used.

[0130] Furthermore, according to at least one embodiment of the present invention, the second sending unit is configured to send first information to the terminal; specifically, it performs at least one of the following:

[0131] The PDCCH resources scheduled by the first CORESET are used to send TCI-States in DCI to the terminal;

[0132] The first PDCCH resource is used to send TCI-States from the DCI to the terminal;

[0133] Wherein, the first CORESET and / or the first PDCCH are configured based on RRC or MAC CE;

[0134] The first CORESET and / or the first PDCCH are used to indicate the first spatial relationship.

[0135] Furthermore, according to at least one embodiment of the present invention, the first spatial relationship is used to indicate at least one of the following:

[0136] Indicates the spatial relationship of PDSCHs scheduled on the second CORESET and the second CORESET;

[0137] Indicates the spatial relationship of PDSCHs scheduled on the second PDCCH and the second PDCCH.

[0138] Furthermore, according to at least one embodiment of the present invention, the second CORESET includes at least one of the following: a CORESET configured for at least one terminal, a CORESET configured by the system, and a CORESET indicated by the system.

[0139] Furthermore, according to at least one embodiment of the present invention, the second transmitting unit is configured to transmit second information according to the first spatial relationship; the second information does not contain information for indicating the spatial relationship; the second information includes at least one of the following: a second CORESET, a second PDCCH; the PDSCH scheduled on the second information is demodulated or transmitted using the first spatial relationship.

[0140] Furthermore, according to at least one embodiment of the present invention, the second transmitting unit is also configured to transmit the PDSCH on at least one symbol after transmitting the second information.

[0141] Furthermore, according to at least one embodiment of the present invention, the second receiving unit is also configured to perform at least one of the following:

[0142] According to the first spatial relationship, the receiving terminal sends feedback information to the PDSCH;

[0143] According to the first spatial relationship, receive PUCCH information.

[0144] Furthermore, according to at least one embodiment of the present invention, the second receiving unit or the second sending unit is also configured to transmit control information and / or data information according to the previously indicated spatial relationship before receiving the feedback information.

[0145] Furthermore, according to at least one embodiment of the present invention, the second receiving unit is configured to receive control information transmitted by the terminal in the first space and on the first channel;

[0146] The control information includes at least one of the following: feedback information, channel state information, SRS, PUCCH data, and PUSCH data.

[0147] Furthermore, according to at least one embodiment of the present invention, the spatial relationship includes at least one of the following parameters:

[0148] QCL, TCI, Doppler translation, Doppler spread, average delay, delay spread, spatial receiving parameters, antenna port quasi-co-location, spatial domain transmit filtering, spatial domain receive filtering, spatial relationship information, spatial filtering, spatial transmit filtering, spatial configuration information;

[0149] The QCL includes at least: the type of QCL and the assumed QCL;

[0150] The TCI includes at least: TCI state.

[0151] At least one embodiment of the present invention provides a first communication device, comprising: a first processor and a first memory for storing a computer program capable of running on the processor.

[0152] Wherein, when the first processor is used to run the computer program, it executes the steps of any of the methods described above on the first communication device side.

[0153] At least one embodiment of the present invention also provides a second communication device, comprising: a second processor and a second memory for storing a computer program capable of running on the processor.

[0154] Wherein, when the second processor is used to run the computer program, it executes the steps of any of the methods described above on the second communication device side.

[0155] At least one embodiment of the present invention provides a storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of any of the methods described above on the first communication device side, or implements the steps of any of the methods described above on the second communication device side.

[0156] The data transmission method, apparatus, communication device, and storage medium provided in this embodiment of the invention include: a second communication device sending first information to a terminal; a first communication device receiving first information from a network device; the first information indicating a first spatial relationship; and the first spatial relationship being used for transmitting control information and / or data information. Thus, by scheduling the first spatial relationship using specific information (such as the first information), scheduling efficiency is improved to meet and support situations requiring higher mobile speeds. Attached Figure Description

[0157] Figure 1 This is a flowchart illustrating the method for adjusting spatial relationships using PDCCH and PDSCH in a related technology.

[0158] Figure 2 This is a schematic diagram of a time threshold implementation;

[0159] Figure 3 This is a schematic diagram of resource scheduling.

[0160] Figure 4 A flowchart illustrating a data transmission method provided in an embodiment of the present invention;

[0161] Figure 5 A flowchart illustrating another data transmission method provided in an embodiment of the present invention;

[0162] Figure 6 A flowchart illustrating another data transmission method provided in an embodiment of the present invention;

[0163] Figure 7 This is a schematic diagram of the structure of a data transmission device provided in an embodiment of the present invention;

[0164] Figure 8 This is a schematic diagram of another data transmission device provided in an embodiment of the present invention;

[0165] Figure 9 A schematic diagram of the structure of a first communication device provided in an embodiment of the present invention;

[0166] Figure 10 This is a schematic diagram of the structure of a second communication device provided in an embodiment of the present invention;

[0167] Figure 11 This is a schematic diagram of a data transmission system provided in an embodiment of the present invention. Detailed Implementation

[0168] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0169] Figure 1 This is a flowchart illustrating a method for adjusting the spatial relationship or propagation direction of PDCCH and PDSCH in a related technology. Taking Single Sideband (SSB) as an example, the terminal typically assumes that relatively stable energy measurement information can be obtained after five measurements, and determines whether the beam quality meets subsequent operational requirements, or selects a better beam. After the terminal performs five or more measurements, it uses the reference signal receiving power (L1-RSRP) of the uplink feedback layer 1. Based on the information fed back by the terminal, the base station determines whether to update CORESET or PDSCH.

[0170] Based on the information fed back by the terminal, the base station determines whether the CORESET or PDSCH needs to be updated, and then performs the update operation. Specifically, the spatial relationships between the CORESET (the set of control resources configured for transmitting downlink control information (DCI)) and PDSCH are updated through independent MAC CEs.

[0171] Specifically, without any enhancements, the base station sends two MAC CE messages to update the spatial relationship between CORESET and PDSCH. This spatial relationship indicates at least the beam direction, transmission direction, spatial transmission direction, (transmit or receive) spatial filtering, quasi-co-location information (QCL) or type, spatial state, spatial information, and the base station's scheduling direction for the terminal. After receiving the updated spatial information of the CORESET MAC CE, the terminal receives data according to the new spatial relationship. For PDSCH, the UE is further informed of the specific direction used via the Transmission Configuration Indicator (TCI) in the Downlink Control Information (DCI). For a MAC CE to take effect, the corresponding spatial relationship between CORESET and PDSCH will only become effective after the UE sends the uplink acknowledgment (ACK) message for that MAC CE and then waits for 3ms. However, it is generally difficult to guarantee that the two MAC CEs will be sent simultaneously and accurately received by the UE in one go. In other words, the transmission and activation of MAC CE will cause changes in spatial relationships, resulting in delays.

[0172] Afterwards, the UE receives the CORESET and PDCCH based on the new spatial relationship indicated by the MAC CE, and receives the TCI information of the corresponding PDSCH on the PDCCH. At this point, it needs to wait for a time threshold (timeDurationForQCL) before it can transmit or receive the corresponding PDSCH downlink. This time threshold is mainly used for DCI resolution and UE adjustment of spatial relationships such as quasi-collocation (QCL). After completing the reception of the PDSCH, the UE sends feedback to the base station to confirm whether the transmission was correct.

[0173] In related technologies, the methods for configuring the spatial relationship between control channels and data channels are as follows:

[0174] For the spatial configuration of CORESET (such as beam direction):

[0175] If only one TCI state is configured in the RRC, the beam direction of the CORESET will be configured according to the state of this TCI. If an update is required, it needs to be reconfigured through the RRC configuration, which is time-consuming.

[0176] If the RRC is configured with multiple TCI states, then MAC CE needs to be used to indicate one of them in order to configure the beam direction of CORESET;

[0177] If the RRC is configured with the status of multiple TCIs and there is no indication from MAC CE, then the assumptions are made based on the spatial relationship of the SSBs at initial access.

[0178] For the configuration of PDSCH spatial relationships (such as beam direction):

[0179] Specifically, this is achieved through RRC configuration and MAC CE selection. In detail:

[0180] The state of 8 TCIs can be configured via RRC, and one of the TCIs can be used to indicate the beam direction of the PDSCH. However, the timing of data transmission must be greater than or equal to the time threshold (timeDurationForQCL).

[0181] If RRC configuration is complete but there is no MAC CE indication, the initial access SSB will be used directly.

[0182] If RRC configuration is complete and MAC CE also indicates this, but the time threshold (timeDurationForQCL) has not been reached after the DCI indication, then the TCI status of the nearest slot with the smallest CORESET ID is used.

[0183] The time threshold (timeDurationForQCL) is explained as follows:

[0184] Figure 2 This is a schematic diagram of a time threshold implementation; such as... Figure 2 As shown,

[0185] When the subcarrier spacing (SCS) is 120kHz, it occupies 14 or 28 symbols, that is, after 1-2 slots;

[0186] The time threshold is mainly used for: 1) processing downlink control information (DCI), and 2) processing quasi-public address (QCL) port adjustment.

[0187] As mentioned above, since a time-duration-for-QCL (Time Duration For QCL) is required after the PDCCH (Power Distribution Channel) before PDSCH (Power Distribution Channel) transmission can occur, the introduction of timeDurationForQCL means that almost all high-frequency transmissions are scheduled across slots. This makes base station design and scheduling algorithms more complex, requiring consideration of the transmission directions of two or more slots simultaneously, as well as how to schedule them.

[0188] Figure 3 This is a schematic diagram of resource scheduling; for example... Figure 3 As shown, Figure 3 In Slot 1, S1 represents PDCCH, which schedules S2 of Slot 3 or S3 of Slot 4; S2 of Slot 3 and S4 of Slot 4 are the corresponding scheduled PDSCH; Slot 1 can schedule part of PDSCH of Slot 3 or PDSCH of Slot 4.

[0189] If the time duration does not meet the timeDurationForQCL requirement, it is necessary to find the QCL or TCI state corresponding to the smallest CORESET ID within the nearest slot as the reference for the PDSCH demodulation reference signal (DMRS). On one hand, it cannot be guaranteed that the direction the base station schedules for the UE will always be the direction with the smallest CORESET ID. If two CORESETs overlap in time, it is very likely that the UE will not be scheduled in the required direction. On the other hand, CORESET#0 cannot always be used for similar transmissions. CORESET#0 is primarily used for communication with the SSB and carries a lot of common control information; it cannot always be used to carry these UE-specific service transmissions, and its capacity is limited.

[0190] Furthermore, as mentioned above, the spatial relationship between CORESET and PDSCH is updated separately through two MAC CEs. It cannot be guaranteed that the two MAC CEs will be sent simultaneously, or that the time difference will be within an acceptable range to reduce latency. The 3ms MAC CE activation time is also unavoidable. Therefore, the existing technology still has significant room for improvement in meeting and supporting higher mobile speeds.

[0191] Based on this, in various embodiments of the present invention, the second communication device sends first information to the terminal; the first communication device receives first information from the network device; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0192] This invention provides a data transmission method applied to a first communication device, which can be a mobile phone, tablet computer, laptop, computer, or other terminal. Figure 4 As shown, the method includes:

[0193] Step 401: Receive first information from the network device; the first information is used to indicate a first spatial relationship;

[0194] The first spatial relationship is used for the transmission of control information and / or data information.

[0195] That is, the first spatial relationship can be used only to indicate the direction of the control channel; or it can cover the direction of both the control channel (transmitting CORESET or PDCCH) and the data channel (transmitting PDSCH).

[0196] In practical applications, considering that the effective time of the first spatial relationship (i.e., the time when it is determined to be used) must be waited for, changes to the spatial relationship will cause delays. To improve communication efficiency, the effective time can be set to meet and support situations with higher movement speeds.

[0197] Based on this, in one embodiment, a method for determining the usage time (i.e., the effective time) is provided.

[0198] Specifically, the method may further include:

[0199] Receive time information; the time information is used to indicate the usage time of the first spatial relationship.

[0200] Based on the time information, the terminal can determine at which point in time control information and / or data information can be transmitted according to the first spatial relationship.

[0201] Here, the first information may carry the time information, so that the time when the first spatial relationship indicated by the first information is used can be determined based on the time information.

[0202] The time information can also be sent separately, thereby determining the usage time of the first spatial relationship indicated by the first information based on the received time information.

[0203] Here, the time information includes the slot offset indicated in the Time Domain Resource Assignment (TDRA).

[0204] In another embodiment, another method for determining the time of use is provided.

[0205] Specifically, the method may further include:

[0206] Send feedback information corresponding to the first information; the feedback information is used to explain that the first spatial relationship is used.

[0207] Accordingly, the base station receives the feedback information and determines that the first spatial relationship is being used.

[0208] The feedback information for the first piece of information can be HARQ-ACK information.

[0209] Specifically, after receiving feedback information such as an acknowledgment (HARQ-ACK) message indicating the first spatial relationship, the base station considers that the spatial relationship indicated by the first information has been used; the terminal considers that it can receive the next CORESET after the feedback information is sent, that is, the terminal can receive the second CORESET or all CORESETs according to the corresponding first spatial relationship.

[0210] In other words, once the terminal sends feedback information, it can be assumed that the first spatial relationship has been used.

[0211] In a real-time example, receiving the first information from the network device includes at least one of the following:

[0212] The transmission configuration indication-states (TCI-States) are received from the physical downlink control information (DCI, downlink control information) sent by the PDCCH scheduled by the first CORESET network device.

[0213] The receiving network device uses the TCI-States in the DCI sent by the first PDCCH;

[0214] Wherein, the first CORESET and / or the first PDCCH are configured based on RRC or MAC CE;

[0215] The first CORESET and / or the first PDCCH are used to indicate the first spatial relationship.

[0216] The network device can be a base station.

[0217] Here, spatial relationships can be configured through a specific first CORESET or first PDCCH. That is, the first CORESET can be a CORESET specifically configured via RRC or MAC CE to indicate spatial status; the first PDCCH can be a downlink control channel specifically configured via RRC or MAC CE to indicate spatial status.

[0218] The first spatial relationship is the TCI-States information in the DCI on the PDCCH sent on the first CORESET, or the TCI-States information indicated by the DCI on the first PDCCH;

[0219] The spatial relationships indicated by the TCI mentioned above can be a set of spatial relationships based on RRC configuration or MAC CE activation or update.

[0220] In conjunction with the aforementioned time information, the DCI carried on the first CORESET or the first PDCCH may contain a time for scheduling data transmission, that is, the time information can be used to indicate that at this moment, the first spatial relationship takes effect.

[0221] In one embodiment, the first spatial relationship is used to indicate at least one of the following:

[0222] Indicates the spatial relationship of PDSCHs scheduled on the second CORESET and the second CORESET;

[0223] Indicates the spatial relationship of PDSCHs scheduled on the second PDCCH and the second PDCCH.

[0224] The second CORESET includes at least one of the following: a CORESET configured for at least one terminal (including one or more or all terminals), a system-configured CORESET, or a system-indicated CORESET.

[0225] In one embodiment, the method further includes:

[0226] According to the first spatial relationship, receive the second information; the second information includes at least one of the following: second CORESET, second PDCCH;

[0227] The PDSCH scheduled on the second information is demodulated using the first spatial relationship.

[0228] The second CORESET includes at least one of the following: a CORESET configured for at least one terminal (including one or more or all terminals), a CORESET configured by the system, or a CORESET indicated by the system.

[0229] Here, the second information does not include information indicating spatial relationships; that is,

[0230] The second CORESET may not contain information indicating spatial relationships; that is, the second CORESET may not be used to indicate spatial relationships.

[0231] The second PDCCH may not contain information indicating spatial relationships; that is, the second PDCCH may not be used to indicate spatial relationships.

[0232] Specifically, after receiving the first spatial relationship, the terminal can receive the second CORESET, all CORESETs, or the second PDCCH on the first spatial relationship;

[0233] The first PDSCH transmission scheduled by the terminal on the aforementioned second CORESET (referring to the CORESET for the terminal, or the CORESET for multiple or all terminals) or the second PDCCH (both the second CORESET and the second PDCCH are collectively referred to as the second information) is demodulated using the first spatial relationship demodulation. That is, the terminal can assume that the PDSCH scheduled by the second CORESET or the second PDCCH can be received and demodulated using the first spatial relationship. The downlink DCI information of the second PDCCH may not contain TCI states.

[0234] According to the first spatial relationship, the UE sends uplink HARQ-ACK feedback information for PDSCH or PUCCH.

[0235] In one embodiment, the method further includes:

[0236] The PDSCH is received on at least one symbol after the second information is received.

[0237] Specifically, the PDSCH can be the next symbol after the last symbol corresponding to the PDCCH. The UE does not need to wait for a time threshold and can receive the first PDSCH on several symbols after receiving the second PDCCH.

[0238] In one embodiment, the method further includes at least one of the following:

[0239] According to the first spatial relationship, feedback information is sent to the network device for the PDSCH;

[0240] According to the first spatial relationship, send PUCCH information or uplink control information.

[0241] The feedback information can be HARQ-ACK information.

[0242] In one embodiment, the method further includes:

[0243] Before receiving the second spatial relationship indicated by the third information, control information and / or data information are transmitted according to the first spatial relationship indicated by the first information.

[0244] Accordingly, before receiving the feedback information, the base station continues to transmit according to the spatial relationship previously indicated.

[0245] In some embodiments, the method further includes:

[0246] Step 402: Transmit control information and / or data information according to the first spatial relationship.

[0247] Specifically, in one embodiment, the method further includes:

[0248] According to the first spatial relationship, transmit the specified information on the first channel;

[0249] The transmission of specified information includes at least one of the following: transmission of feedback information, transmission of channel state information, transmission of channel sounding reference signal (SRS), transmission of PUCCH data, and transmission of PUSCH data.

[0250] Here, according to the first spatial relationship, it can refer to spatial filtering, spatial transmission filtering, spatial setting, etc., as indicated by the first spatial relationship.

[0251] Specifically, the corresponding spatial relationship (such as the first spatial relationship mentioned above, the second spatial relationship mentioned above, etc.) includes at least one of the following:

[0252] Quasi-co-location (QCL), Transmission Configuration Indicator (TCI), Doppler shift, Doppler spread, average delay, delay spread, spatial RX parameters, Antenna portsquasi-co-location, spatial domain transmission filter, spatial domain receive filter, Spatial Relation Info, Spatial filter, Spatial transmission filter, Spatial setting;

[0253] The QCL includes at least: the type of QCL and the assumed QCL;

[0254] The TCI includes at least: TCI states.

[0255] Correspondingly, embodiments of the present invention also provide a data transmission method applied to a second communication device, which may be a base station; such as Figure 5 As shown, the method includes:

[0256] Step 501: Send first information to the terminal; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0257] Specifically, sending the first information to the terminal includes at least one of the following:

[0258] The PDCCH, scheduled using the first CORESET, sends the Transmission Configuration Indication-States (TCI-States) in the Downlink Control Information (DCI) to the terminal.

[0259] The first PDCCH is used to send the TCI-States in the DCI to the terminal;

[0260] Wherein, the first CORESET is used to indicate spatial relationships; the first CORESET is configured based on RRC or MACCE.

[0261] The first PDCCH is used to indicate spatial relationships; the first CORESET is configured based on RRC or MAC CE.

[0262] Here, spatial relationships can be configured through a specific first CORESET or first PDCCH. That is, the first CORESET can be a CORESET specifically configured via RRC or MMC CE to indicate spatial status; the first PDCCH can be a downlink control channel specifically configured via RRC or MMC CE to indicate spatial status.

[0263] The first spatial relationship is the TCI-States in the DCI on the PDCCH sent on the first CORESET, or the TCI-States indicated by the DCI on the first PDCCH;

[0264] The spatial relationships or spatial information indicated by the TCI mentioned above can be a set of spatial relationships based on RRC configuration or MAC CE activation or update.

[0265] In one embodiment, a method is provided for determining the time of use (i.e., the effective time).

[0266] Specifically, the method further includes:

[0267] Send time information, which is used to indicate the usage time of the first spatial relationship.

[0268] The usage time can also be understood as the time when the first spatial relationship is used or the effective time. That is to say, the spatial relationship becomes effective after the corresponding usage time; downlink control information, downlink data information, and uplink feedback information sent after the usage time are all transmitted according to the first spatial relationship.

[0269] The time information includes the time slot offset indicated in the Time Domain Resource Allocation (TD-RA).

[0270] In another embodiment, another method for determining the time of use is provided.

[0271] Specifically, the method further includes:

[0272] After receiving feedback information from the receiving terminal in response to the first information, it is determined that the first spatial relationship has been used.

[0273] Here, the time when the base station receives the feedback information of the first information can be considered as the effective time of the first spatial relationship.

[0274] Accordingly, the terminal needs to send feedback information corresponding to the first information; the feedback information is used to explain that the first spatial relationship is used.

[0275] Specifically, after receiving feedback information such as an acknowledgment (HARQ-ACK) message indicating the first spatial relationship, the base station considers that the spatial relationship indicated by the first information has been used; the terminal considers that it can receive the next CORESET after the feedback information is sent, that is, the terminal can receive the second CORESET or all CORESETs according to the corresponding first spatial relationship.

[0276] In one embodiment, the first spatial relationship is used to indicate at least one of the following:

[0277] Indicates the spatial relationship of PDSCHs scheduled on the second CORESET and the second CORESET;

[0278] Indicates the spatial relationship of PDSCHs scheduled on the second PDCCH and the second PDCCH.

[0279] In one embodiment, the second CORESET includes at least one of the following: a CORESET configured for at least one terminal, a system-configured CORESET, or a system-indicated CORESET.

[0280] In one embodiment, the method further includes:

[0281] The second information is sent according to the first spatial relationship; the second information does not contain information for indicating the spatial relationship; the second information includes at least one of the following: a second CORESET, a second PDCCH; the first PDSCH scheduled on the second information is demodulated or transmitted using the first spatial relationship.

[0282] The second CORESET includes at least one of the following: a CORESET configured for at least one terminal (including one or more or all terminals), a CORESET configured by the system, or a CORESET indicated by the system.

[0283] Here, the second information does not include information indicating spatial relationships; that is,

[0284] The second CORESET may not contain information indicating spatial relationships; that is, the third CORESET may not be used to indicate spatial relationships.

[0285] The second PDCCH may not contain information indicating spatial relationships; that is, the third PDCCH may not be used to indicate spatial relationships.

[0286] In one embodiment, the method further includes:

[0287] The PDSCH is transmitted on at least one symbol after the second information is transmitted.

[0288] Specifically, PDSCH can be the symbol following the last symbol of PDCCH. The terminal does not need to wait for the timeduration for QCL and can receive the first PDSCH on several symbols after receiving the second PDCCH.

[0289] In one embodiment, the method further includes at least one of the following:

[0290] According to the first spatial relationship, the receiving terminal sends feedback information to the PDSCH;

[0291] According to the first spatial relationship, receive PUCCH information.

[0292] In one embodiment, the method further includes:

[0293] Before receiving the feedback information, control information and / or data information are transmitted according to the previously indicated spatial relationship.

[0294] Specifically, before receiving the feedback information regarding the first spatial relationship, the first spatial relationship is not considered to be effective or to have been correctly received or transmitted, and control information and / or data information are transmitted according to the spatial relationship previously indicated before the first spatial relationship was indicated.

[0295] Accordingly, before receiving the second spatial relationship indicated by the third information, the terminal transmits control information and / or data information according to the first spatial relationship indicated by the first information.

[0296] In one embodiment, the method further includes:

[0297] The receiving terminal sends control information on the first channel indicated by the first spatial relationship;

[0298] The control information includes at least one of the following: feedback information, channel state information, SRS, PUCCH data, and PUSCH data.

[0299] In one embodiment, the spatial relationship includes at least one of the following parameters:

[0300] QCL, TCI, Doppler translation, Doppler spread, average delay, delay spread, spatial receiving parameters, antenna port quasi-co-location, spatial domain transmit filtering, spatial domain receive filtering, spatial relationship information, spatial filtering, spatial transmit filtering, spatial configuration information;

[0301] The QCL includes at least: the type of QCL and the assumed QCL;

[0302] The TCI includes at least: TCI state.

[0303] The present invention will be further described in detail below with reference to application examples.

[0304] Example 1: A method for indicating spatial relationships is provided.

[0305] The first method is as follows:

[0306] Step 001: Configure the base station with the first CORESET (denoted as CORESET#1);

[0307] The CORESET#1 is used to indicate the UE's subsequent spatial relationships (equivalent to...). Figure 4 The first spatial relation in the method shown).

[0308] The spatial relationship is used at least to indicate beam direction, propagation direction, spatial transmission direction, spatial state, and the scheduling direction of the spatial information base station for the terminal.

[0309] Step 002: After receiving the first TCI state indicated by the PDCCH on CORESET#1 (denoted as TCI#1, TCI#1 is used to indicate the first spatial relationship), the UE performs at least one of the following according to the first spatial relationship indicated by TCI#1:

[0310] Receive subsequent second CORESETs or receive PDCCH information on all subsequent CORESETs in the first spatial relationship;

[0311] Receive PDSCH scheduled on PDCCH, and provide HARQ-ACK feedback for the transmission of PDSCH in the first spatial relationship, or perform uplink transmission of PUCCH, SRS, and PUSCH in the first spatial relationship.

[0312] It should be noted that before the UE receives the new TCI-States indicated by the control channel carried on the first CORESET, it will transmit according to the spatial relationship indicated by TCI#1.

[0313] The usage time of spatial relationships is explained as follows:

[0314] In one embodiment, the UE may consider that the first spatial relationship is used after receiving the first spatial relationship indicated by CORESET#1 and feeding back the corresponding first HARQ-ACK information; accordingly, the base station considers that the spatial relationship is used after receiving the first HARQ-ACK information corresponding to the first spatial relationship sent by CORESET#1.

[0315] In another embodiment, the UE may consider the time when the data transmission indicated on CORESET#1 is received as the time when the first spatial relationship is used.

[0316] That is, the UE may not feed back HARQ-ACK information, and the UE may consider the first spatial relationship to be effective according to the time specified in the protocol or the agreed time.

[0317] For example, it can be specified or agreed that it will take effect X symbols or N slots after the time indicated on CORESET#1 is received.

[0318] Example 2: Providing another method for indicating spatial relationships.

[0319] Step 011: Configure the first PDCCH (denoted as PDCCH#1) at the base station;

[0320] The PDCCH#1 is used to indicate the UE's subsequent spatial relationship or spatial transmission direction (equivalent to...). Figure 4 The first spatial relation in the method shown).

[0321] Step 012: After receiving the first TCI (denoted as TCI#1, which is used to indicate the first spatial relationship) indicated on PDCCH#1, the UE will receive the second PDCCH (denoted as PDCCH#2) and the PDSCH information scheduled on the second PDCCH according to the first spatial relationship indicated by TCI#1; and perform HARQ-ACK feedback on the transmission of PDSCH on the first spatial relationship indicated by TCI#1, or perform uplink transmission of PUCCH, SRS, and PUSCH on the first spatial relationship.

[0322] Here, both the first PDCCH and the second PDCCH are downlink control channels configured or designated by the system.

[0323] This invention provides a data transmission method for adjusting spatial relationships, such as... Figure 6 As shown, taking SSB as an example, the terminal generally assumes that relatively stable energy measurement information can be obtained after 5 measurements, and judges whether the beam quality meets the subsequent working requirements, or selects a better beam. After the terminal performs 5 or more measurements, it will pass through the uplink feedback layer 1 RSRP (L1-RSRP). The base station determines whether it needs to update CORESET or PDSCH based on the information fed back by the UE. Based on the UE feedback, the base station determines the transmission direction or spatial filtering (equivalent to a spatial relationship) of CORESET or PDSCH that needs to be updated, and then performs the update operation. Specifically, it includes the following steps:

[0324] Step 601: The base station sends PDCCH according to CORESET#1 (equivalent to a first information) to indicate TCI#1 at the next moment;

[0325] Here, TCI#1 is used to indicate the transmission direction of the next CORESET (denoted as CORESET#2).

[0326] The transmission direction of the CORESET is equivalent to Figure 4 and Figure 5 One type of spatial relationship in the method shown.

[0327] The next moment can be a specific transmission time; thus, the transmission direction or spatial filtering indicated by TCI#1 (all transmission directions can be equivalent to spatial filtering) can take effect at the corresponding transmission time.

[0328] Step 602: The terminal sends HARQ-ACK information via uplink PUCCH to indicate that TCI#1 has been correctly received;

[0329] Specifically, when the terminal receives the TCI#1 information transmitted on CORESET#1 and demodulates it correctly, it can confirm the correct reception and send a HARQ-ACK message, which is a positive acknowledgment message (ACK, A Positive Acknowledgment) or 1; if it is not correctly received or demodulated, it sends a negative acknowledgment message (NACK, A Negative Acknowledgment) or 0.

[0330] Step 603: The base station sends a PDCCH schedule on CORESET#2 and indicates the actual transmission of the PDSCH;

[0331] Step 603 can save time for MAC CE transmission, ACK feedback, and agreed MAC CE activation time, such as waiting 3ms after receiving ACK information;

[0332] This saves time by eliminating the time threshold of timeDurationForQCL, which includes decoding and antenna port adjustment. Existing systems need to wait for the time threshold of timeDurationForQCL after correctly receiving the DCI before receiving in the direction indicated by the DCI.

[0333] Step 604: The terminal reports that the PDSCH transmission is correct via the uplink PUCCH.

[0334] For example, you can send a message carrying HARQ-ACK, such as ACK or NACK.

[0335] Step 605: The base station continues to transmit data on the spatial filter indicated by TCI#1, sends PDCCH scheduling on CORESET#2, and indicates the transmission of PDSCH;

[0336] Here, if CORESET#2 does not contain TCI status information, the TCI status used in the previous scheduling will continue, that is, the transmission will proceed according to the beam direction indicated by TCI#1.

[0337] That is, CORESET#2 can continue to schedule PDSCH transmission when transmitting at the next time moment;

[0338] CORESET#2 always uses the state of TCI#1, and does not indicate the state of TCI when scheduling PDSCH; it continuously transmits on CORESET#2 according to the state of TCI#1 (in the case of high speed, this can be the main focus, and there is no need to pay attention to other CORESETs).

[0339] Step 606: The terminal reports that the PDSCH transmission is correct via the uplink PUCCH.

[0340] Step 607: Send PDCCH scheduling on CORESET#2 to indicate TCI#2 at the next moment;

[0341] Here, TCI#2 is used to indicate the transmission direction or spatial filtering of the next CORESET (denoted as CORESET#3);

[0342] Step 608: The terminal sends HARQ-ACK information via uplink PUCCH to indicate that TCI#2 has been correctly received;

[0343] For details, please refer to the explanation of step 602 above, which uses ACK or NACK to send an acknowledgment message or a denial message. Further details will not be provided here.

[0344] The transmission direction of CORESET is updated through steps 607 and 608.

[0345] To implement the method of the embodiments of the present invention, the embodiments of the present invention also provide a data transmission device, which is disposed on the first communication device, such as... Figure 7 As shown, the device includes:

[0346] The first receiving unit is configured to receive first information from a network device; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0347] In one embodiment, the first receiving unit is further configured to receive time information; the time information is used to indicate the usage time of the first spatial relationship.

[0348] In one embodiment, the time information includes: a time slot offset indicated in the TDRA.

[0349] In one embodiment, the apparatus further includes: a first transmitting unit, configured to transmit feedback information corresponding to the first information; the feedback information is used to explain that the first spatial relationship is used.

[0350] In one embodiment, the first receiving unit is configured to receive first information from a network device, including at least one of the following:

[0351] The receiving network device uses the PDCCH scheduled by the first CORESET to send the TCI-States in the DCI;

[0352] The receiving network device uses the TCI-States in the DCI sent by the first PDCCH;

[0353] The first CORESET and / or the first PDCCH are configured based on RRC or MAC CE.

[0354] The first CORESET and / or the first PDCCH are used to indicate the first spatial relationship.

[0355] In one embodiment, the first spatial relationship is used to indicate at least one of the following:

[0356] Spatial relationship of PDSCH scheduled on the second CORESET and the second CORESET;

[0357] Spatial relationship of PDSCH scheduled on the second PDCCH and the second PDCCH.

[0358] In one embodiment, the second CORESET includes at least one of the following: a CORESET configured for at least one terminal, a system-configured CORESET, or a system-indicated CORESET.

[0359] In one embodiment, the first receiving unit is further configured to receive second information according to the first spatial relationship; the second information includes at least one of the following: a second CORESET, a second PDCCH; the second information does not contain information for indicating the spatial relationship;

[0360] The PDSCH scheduled on the second information is demodulated using the first spatial relationship.

[0361] In one embodiment, the first receiving unit is further configured to receive the PDSCH on at least one symbol after receiving the second information.

[0362] In one embodiment, the first sending unit is further configured to perform at least one of the following:

[0363] According to the first spatial relationship, feedback information is sent to the network device for the PDSCH;

[0364] According to the first spatial relationship, send PUCCH information or uplink control information.

[0365] In one embodiment, the first receiving unit or the first sending unit is further configured to transmit control information and / or data information according to the first spatial relationship indicated by the first information before receiving the second spatial relationship indicated by the third information.

[0366] In one embodiment, the first transmitting unit is further configured to transmit specified information on the first channel according to the first spatial relationship;

[0367] The transmission of specified information includes at least one of the following: transmission of feedback information, transmission of channel state information, transmission of channel sounding reference signal (SRS), transmission of PUCCH data, and transmission of PUSCH data.

[0368] In one embodiment, the corresponding spatial relationship includes at least one of the following:

[0369] QCL, TCI, Doppler translation, Doppler spread, average delay, delay spread, spatial receiving parameters, antenna port quasi-co-location, spatial domain transmit filtering, spatial domain receive filtering, spatial relationship information, spatial filtering, spatial transmit filtering, spatial configuration information;

[0370] The QCL includes at least: the type of QCL and the assumed QCL;

[0371] The TCI includes at least: TCI state.

[0372] In practical applications, the first sending unit and the first receiving unit can be implemented by the communication interface in the information transmission device.

[0373] To implement the method on the second communication device side of the present invention, the present invention also provides a data transmission device, disposed on the second communication device, such as... Figure 8 As shown, the device includes:

[0374] The second sending unit is used to send first information to the terminal; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0375] In one embodiment, the second sending unit is further configured to send time information, the time information being used to indicate the usage time of the first spatial relationship.

[0376] In one embodiment, the time information includes: a time slot offset indicated in the TDRA.

[0377] In one embodiment, the apparatus further includes a second receiving unit, configured to receive feedback information from the terminal regarding the first information, and determine that the first spatial relationship is used.

[0378] In one embodiment, the second sending unit is configured to send first information to the terminal; specifically, it performs at least one of the following:

[0379] The PDCCH resources scheduled by the first CORESET are used to send TCI-States in DCI to the terminal;

[0380] The first PDCCH resource is used to send TCI-States from the DCI to the terminal;

[0381] Wherein, the first CORESET and / or the first PDCCH are configured based on RRC or MAC CE;

[0382] The first CORESET and / or the first PDCCH are used to indicate the first spatial relationship.

[0383] In one embodiment, the first spatial relationship is used to indicate at least one of the following:

[0384] Indicates the spatial relationship of PDSCHs scheduled on the second CORESET and the second CORESET;

[0385] Indicates the spatial relationship of PDSCHs scheduled on the second PDCCH and the second PDCCH.

[0386] In one embodiment, the second CORESET includes at least one of the following: a CORESET configured for at least one terminal, a system-configured CORESET, or a system-indicated CORESET.

[0387] In one embodiment, the second transmitting unit is configured to transmit second information according to the first spatial relationship; the second information does not contain information indicating the spatial relationship; the second information includes at least one of the following: a second CORESET, a second PDCCH; the PDSCH scheduled on the second information is demodulated or transmitted using the first spatial relationship.

[0388] In one embodiment, the second transmitting unit is further configured to transmit the PDSCH on at least one symbol after transmitting the second information.

[0389] In one embodiment, the second receiving unit is further configured to perform at least one of the following:

[0390] According to the first spatial relationship, the receiving terminal sends feedback information to the PDSCH;

[0391] According to the first spatial relationship, receive PUCCH information.

[0392] In one embodiment, the second receiving unit or the second sending unit is further configured to transmit control information and / or data information according to the previously indicated spatial relationship before receiving the feedback information.

[0393] In one embodiment, the second receiving unit is configured to receive control information transmitted by the terminal in the first space and on the first channel;

[0394] The control information includes at least one of the following: feedback information, channel state information, SRS, PUCCH data, and PUSCH data.

[0395] In one embodiment, the spatial relationship includes at least one of the following parameters:

[0396] QCL, TCI, Doppler translation, Doppler spread, average delay, delay spread, spatial receiving parameters, antenna port quasi-co-location, spatial domain transmit filtering, spatial domain receive filtering, spatial relationship information, spatial filtering, spatial transmit filtering, spatial configuration information;

[0397] The QCL includes at least: the type of QCL and the assumed QCL;

[0398] The TCI includes at least: TCI state.

[0399] In practical applications, the second receiving unit and the second sending unit can be implemented by the communication interface in the data transmission device.

[0400] It should be noted that the data transmission device provided in the above embodiments is only illustrated by the division of the above program modules. In practical applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the data transmission device and the data transmission method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0401] Based on the hardware implementation of the above program modules, and in order to implement the method on the first communication device side of the embodiments of the present invention, the embodiments of the present invention also provide a first communication device, such as... Figure 9 As shown, the first communication device 90 includes:

[0402] The first communication interface 901 is capable of exchanging information with the second communication device;

[0403] The first processor 902 is connected to the first communication interface 901 to enable information interaction with the second communication device. When running a computer program, it executes the methods provided by one or more technical solutions on the first communication device side. The computer program is stored in the first memory 903.

[0404] Specifically, the first communication interface 901 is used to receive first information from the network device; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0405] In one embodiment, the first communication interface 901 is further configured to receive time information; the time information is used to indicate the usage time of the first spatial relationship.

[0406] The time information includes: the time slot offset indicated in the Time Domain Resource Allocation (TDRA).

[0407] In one embodiment, the first communication interface 901 is further configured to send feedback information corresponding to the first information; the feedback information is used to explain that the first spatial relationship is used.

[0408] In one embodiment, the first communication interface 901 is specifically configured to perform at least one of the following:

[0409] The receiving network device uses the PDCCH scheduled by the first CORESET to send the TCI-States in the DCI;

[0410] The receiving network device uses the TCI-States in the DCI sent by the first PDCCH;

[0411] The first CORESET and / or the first PDCCH are configured based on RRC or MAC CE.

[0412] The first CORESET and / or the first PDCCH are used to indicate the first spatial relationship.

[0413] In one embodiment, the first spatial relationship is used to indicate at least one of the following:

[0414] Spatial relationship of PDSCH scheduled on the second CORESET and the second CORESET;

[0415] Spatial relationship of PDSCH scheduled on the second PDCCH and the second PDCCH.

[0416] In one embodiment, the second CORESET includes at least one of the following: a CORESET configured for at least one terminal, a system-configured CORESET, or a system-indicated CORESET.

[0417] In one embodiment, the first communication interface 901 is further configured to receive second information according to the first spatial relationship; the second information includes at least one of the following: a second CORESET, a second PDCCH; the second information does not contain information for indicating the spatial relationship;

[0418] The PDSCH scheduled on the second information is demodulated using the first spatial relationship.

[0419] In one embodiment, the first communication interface 901 is further configured to receive the PDSCH on at least one symbol after receiving the second information.

[0420] In one embodiment, the first communication interface 901 is further configured to perform at least one of the following:

[0421] According to the first spatial relationship, feedback information is sent to the network device for the PDSCH;

[0422] According to the first spatial relationship, send PUCCH information or uplink control information.

[0423] In one embodiment, the first communication interface 901 is further configured to transmit control information and / or data information according to the first spatial relationship indicated by the first information before receiving the second spatial relationship indicated by the third information.

[0424] In one embodiment, the first communication interface 901 is further configured to send specified information on the first channel according to the first spatial relationship;

[0425] The transmission of specified information includes at least one of the following: transmission of feedback information, transmission of channel state information, transmission of SRS, transmission of PUCCH data, and transmission of PUSCH data.

[0426] In one embodiment, the corresponding spatial relationship includes at least one of the following:

[0427] QCL, TCI, Doppler translation, Doppler spread, average delay, delay spread, spatial receiving parameters, antenna port quasi-co-location, spatial domain transmit filtering, spatial domain receive filtering, spatial relationship information, spatial filtering, spatial transmit filtering, spatial configuration information;

[0428] The QCL includes at least: the type of QCL and the assumed QCL;

[0429] The TCI includes at least: TCI state.

[0430] It should be noted that the specific processing procedures of the first processor 902 and the first communication interface 901 are detailed in the method embodiment and will not be repeated here.

[0431] Of course, in practical applications, the various components in the first communication device 90 are coupled together through the bus system 904. It can be understood that the bus system 904 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 904 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, in... Figure 9 The general designated all buses as Bus System 904.

[0432] In this embodiment of the invention, the first memory 903 is used to store various types of data to support the operation of the first communication device 90. Examples of such data include any computer program used to operate on the first communication device 90.

[0433] The methods disclosed in the above embodiments of the present invention can be applied to the first processor 902, or implemented by the first processor 902. The first processor 902 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware or by instructions in the form of software in the first processor 902. The first processor 902 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The first processor 902 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of the present invention can be directly manifested as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in the first memory 903. The first processor 902 reads the information in the first memory 903 and completes the steps of the aforementioned method in combination with its hardware.

[0434] In an exemplary embodiment, the first communication device 90 may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned method.

[0435] Based on the hardware implementation of the above program modules, and in order to implement the method on the second communication device side of the embodiments of the present invention, such as Figure 10 As shown, the second communication device 100 includes:

[0436] The second communication interface 1001 is capable of exchanging information with the first communication device;

[0437] The second processor 1002 is connected to the second communication interface 1001 to enable information interaction with the first communication device. When running a computer program, it executes the methods provided by one or more technical solutions on the second communication device side. The computer program is stored on the second memory 1003.

[0438] Specifically, the second communication interface 1001 is used to receive SCI;

[0439] The second processor 1002 is used to obtain the resource allocation information of SFCI in SCI according to the first identifier.

[0440] In one embodiment, the second communication interface 1001 is specifically used to send first information to the terminal; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0441] In one embodiment, the second communication interface 1001 is further configured to send time information, which is used to indicate the usage time of the first spatial relationship.

[0442] In one embodiment, the time information includes: a time slot offset indicated in the TDRA.

[0443] In one embodiment, the second communication interface 1001 is further configured to receive feedback information from the terminal regarding the first information, and to determine that the first spatial relationship is used.

[0444] In one embodiment, the second communication interface 1001 is configured to perform at least one of the following:

[0445] The PDCCH resources scheduled by the first CORESET are used to send TCI-States in DCI to the terminal;

[0446] The first PDCCH resource is used to send TCI-States from the DCI to the terminal;

[0447] Wherein, the first CORESET and / or the first PDCCH are configured based on RRC or MAC CE;

[0448] The first CORESET and / or the first PDCCH are used to indicate the first spatial relationship.

[0449] In one embodiment, the first spatial relationship is used to indicate at least one of the following:

[0450] Indicates the spatial relationship of PDSCHs scheduled on the second CORESET and the second CORESET;

[0451] Indicates the spatial relationship of PDSCHs scheduled on the second PDCCH and the second PDCCH.

[0452] In one embodiment, the second CORESET includes at least one of the following: a CORESET configured for at least one terminal, a system-configured CORESET, or a system-indicated CORESET.

[0453] In one embodiment, the second communication interface 1001 is further configured to send second information according to the first spatial relationship; the second information does not contain information for indicating the spatial relationship; the second information includes at least one of the following: a second CORESET, a second PDCCH; the PDSCH scheduled on the second information is demodulated or transmitted using the first spatial relationship.

[0454] In one embodiment, the second communication interface 1001 is further configured to transmit the PDSCH on at least one symbol after the second information is transmitted.

[0455] In one embodiment, the second communication interface 1001 is further configured to perform at least one of the following:

[0456] According to the first spatial relationship, the receiving terminal sends feedback information to the PDSCH;

[0457] According to the first spatial relationship, receive PUCCH information.

[0458] In one embodiment, the second communication interface 1001 is further configured to transmit control information and / or data information according to the previously indicated spatial relationship before receiving the feedback information.

[0459] In one embodiment, the second communication interface 1001 is further configured to receive control information sent by the terminal in the first space and on the first channel;

[0460] The control information includes at least one of the following: feedback information, channel state information, SRS, PUCCH data, and PUSCH data.

[0461] In one embodiment, the spatial relationship includes at least one of the following parameters:

[0462] QCL, TCI, Doppler translation, Doppler spread, average delay, delay spread, spatial receiving parameters, antenna port quasi-co-location, spatial domain transmit filtering, spatial domain receive filtering, spatial relationship information, spatial filtering, spatial transmit filtering, spatial configuration information;

[0463] The QCL includes at least: the type of QCL and the assumed QCL;

[0464] The TCI includes at least: TCI state.

[0465] It should be noted that the specific processing procedures of the second processor 1002 and the second communication interface 1001 are detailed in the method embodiment and will not be repeated here.

[0466] Of course, in practical applications, the various components in the second communication device 100 are coupled together through the bus system 1004. It can be understood that the bus system 1004 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1004 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, in... Figure 10 The general labeled all buses as Bus System 1004.

[0467] In this embodiment of the invention, the second memory 1003 is used to store various types of data to support the operation of the second communication device 100. Examples of such data include any computer program used to operate on the second communication device 100.

[0468] The methods disclosed in the above embodiments of the present invention can be applied to, or implemented by, the second processor 1002. The second processor 1002 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by the integrated logic circuitry of the hardware or by instructions in the form of software within the second processor 1002. The second processor 1002 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The second processor 1002 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of the present invention can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, specifically a second memory 1003. The second processor 1002 reads information from the second memory 1003 and, in conjunction with its hardware, completes the steps of the aforementioned method.

[0469] In an exemplary embodiment, the second communication device 100 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components to perform the aforementioned method.

[0470] It is understood that the memories (first memory 903, second memory 1003) in the embodiments of the present invention can be volatile memories or non-volatile memories, or both. Specifically, non-volatile memories can be read-only memories (ROM), programmable read-only memories (PROM), erasable programmable read-only memories (EPROM), electrically erasable programmable read-only memories (EEPROM), magnetic random access memories (FRAM), flash memories, magnetic surface memories, optical discs, or compact disc read-only memories (CD-ROM); magnetic surface memories can be disk storage or magnetic tape storage. Volatile memories can be random access memories (RAM), which are used as external caches. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memories described in the embodiments of this invention are intended to include, but are not limited to, these and any other suitable types of memories.

[0471] This invention also provides a computer-readable storage medium having a computer program stored thereon;

[0472] When the computer program stored therein is applied to the terminal, and the computer program is executed by the processor, it performs the following: receiving first information from a network device; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0473] Specifically, the terminal can perform the following: Figure 4 The method shown is the same as Figure 4 The method embodiments shown belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0474] When the computer program stored therein is applied to a network device, and the computer program is executed by the processor, it performs the following: sending first information to the terminal; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0475] Specifically, the base station can perform the following: Figure 5 The method shown is the same as Figure 5 The method embodiments shown belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0476] To implement the method of the embodiments of the present invention, the embodiments of the present invention also provide a data transmission system, such as... Figure 11 As shown, the system includes:

[0477] A first communication device 1101 is used to receive first information from a network device; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0478] The second communication device 1102 is used to send first information to the terminal; the first information is used to indicate a first spatial relationship; the first spatial relationship is used to transmit control information and / or data information.

[0479] It should be noted that the specific processing procedures of the first communication device 1101 and the second communication device 1102 have been described in detail above and will not be repeated here.

[0480] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0481] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0482] In addition, in the various embodiments of the present invention, each functional unit can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0483] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0484] Alternatively, if the integrated units of this invention are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this invention, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROM, RAM, magnetic disks, or optical disks.

[0485] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0486] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0487] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A data transmission method, characterized in that, Applied to a first communication device, including: Receive first information from a network device; the first information is used to indicate a first spatial relationship; the first spatial relationship is used for transmitting control information and / or data information. Send feedback information corresponding to the first information; the feedback information is used to explain that the first spatial relationship is used. According to the first spatial relationship, transmit the specified information on the first channel; The transmission of specified information includes at least one of the following: transmitting feedback information, transmitting channel state information, transmitting channel sounding reference signal (SRS), transmitting PUCCH data, and transmitting PUSCH data. The first spatial relationship is the Transmission Configuration Indication (TCI-States) information in the Physical Downlink Control Channel (PDCCH) Uplink / Downlink Control Information (DCI) transmitted on the first Control Resource Set (CORESET), or the TCI-States information indicated by the DCI on the first PDCCH; the first spatial relationship is used to indicate at least one of the following: Spatial relationship of PDSCH scheduled on the second CORESET and the second CORESET; Spatial relationship of PDSCH scheduled on the second PDCCH and the second PDCCH.

2. The method according to claim 1, characterized in that, The method further includes: Receive time information; the time information is used to indicate the usage time of the first spatial relationship.

3. The method according to claim 2, characterized in that, The time information includes: the time slot offset indicated in the Time Domain Resource Allocation (TDRA).

4. The method according to claim 1, characterized in that, The receipt of first information from the network device includes at least one of the following: The receiving network device uses the PDCCH scheduled by the first CORESET to send the TCI-States in the DCI; The receiving network device uses the TCI-States in the DCI sent by the first PDCCH; The first CORESET and / or the first PDCCH are configured based on RRC or MAC CE. The first CORESET and / or the first PDCCH are used to indicate the first spatial relationship.

5. The method according to claim 1, characterized in that, The second CORESET includes at least one of the following: a CORESET configured for at least one terminal, a CORESET configured by the system, or a CORESET indicated by the system.

6. The method according to claim 1, characterized in that, The method further includes: According to the first spatial relationship, second information is received; the second information includes at least one of the following: second CORESET, second PDCCH; the second information does not contain information for indicating the spatial relationship. The PDSCH scheduled on the second information is demodulated using the first spatial relationship.

7. The method according to claim 6, characterized in that, The method further includes: The PDSCH is received on at least one symbol after the second information is received.

8. The method according to claim 7, characterized in that, The method further includes at least one of the following: According to the first spatial relationship, feedback information is sent to the network device for the PDSCH; According to the first spatial relationship, send PUCCH information or uplink control information.

9. The method according to claim 1, characterized in that, The method further includes: Before receiving the second spatial relationship indicated by the third information, control information and / or data information are transmitted according to the first spatial relationship indicated by the first information.

10. The method according to claim 1, characterized in that, The corresponding spatial relationship includes at least one of the following: Quasi-co-location (QCL), Transmission Configuration Indication (TCI), Doppler shift, Doppler spread, average delay, delay spread, spatial receive parameters, antenna port quasi-co-location, spatial domain transmit filtering, spatial domain receive filtering, spatial relationship information, spatial filtering, spatial transmit filtering, and spatial configuration information. The QCL includes at least: the type of QCL and the assumed QCL; The TCI includes at least: TCI state.

11. A data transmission method, characterized in that, Applied to a second communication device, including: Send first information to the terminal; the first information is used to indicate a first spatial relationship; the first spatial relationship is used for the transmission of control information and / or data information. Receive feedback information from the terminal regarding the first information, and determine that the first spatial relationship is used; The receiving terminal sends control information in the first space and on the first channel; The control information includes at least one of the following: feedback information, channel state information, SRS, PUCCH data, and PUSCH data; The first spatial relationship is the Transmission Configuration Indication (TCI-States) information in the Physical Downlink Control Channel (PDCCH) Uplink / Downlink Control Information (DCI) transmitted on the first Control Resource Set (CORESET), or the TCI-States information indicated by the DCI on the first PDCCH; the first spatial relationship is used to indicate at least one of the following: Indicates the spatial relationship of PDSCHs scheduled on the second CORESET and the second CORESET; Indicates the spatial relationship of PDSCHs scheduled on the second PDCCH and the second PDCCH.

12. The method according to claim 11, characterized in that, The method further includes: Send time information, which is used to indicate the usage time of the first spatial relationship.

13. The method according to claim 12, characterized in that, The time information includes: the time slot offset indicated in the Time Domain Resource Allocation (TDRA).

14. The method according to claim 11, characterized in that, Sending the first information to the terminal includes at least one of the following: The PDCCH resources scheduled by the first CORESET are used to send TCI-States in DCI to the terminal; The first PDCCH resource is used to send TCI-States from the DCI to the terminal; Wherein, the first CORESET and / or the first PDCCH are configured based on RRC or MAC CE; The first CORESET and / or the first PDCCH are used to indicate the first spatial relationship.

15. The method according to claim 11, characterized in that, The second CORESET includes at least one of the following: a CORESET configured for at least one terminal, a CORESET configured by the system, or a CORESET indicated by the system.

16. The method according to claim 11, characterized in that, The method further includes: The second information is sent according to the first spatial relationship; the second information does not contain information for indicating the spatial relationship; the second information includes at least one of the following: a second CORESET, a second PDCCH; the PDSCH scheduled on the second information is demodulated or transmitted using the first spatial relationship.

17. The method according to claim 16, characterized in that, The method further includes: The PDSCH is transmitted on at least one symbol after the second information is sent.

18. The method according to claim 17, characterized in that, The method further includes at least one of the following: According to the first spatial relationship, the receiving terminal sends feedback information to the PDSCH; According to the first spatial relationship, receive PUCCH information.

19. The method according to claim 11, characterized in that, The method further includes: Before receiving the feedback information, control information and / or data information are transmitted according to the previously indicated spatial relationship.

20. The method according to claim 11, characterized in that, The spatial relationship includes at least one of the following parameters: QCL, TCI, Doppler translation, Doppler spread, average delay, delay spread, spatial receiving parameters, antenna port quasi-co-location, spatial domain transmit filtering, spatial domain receive filtering, spatial relationship information, spatial filtering, spatial transmit filtering, spatial configuration information; The QCL includes at least: the type of QCL and the assumed QCL; The TCI includes at least: TCI state.

21. A data transmission device, characterized in that, include: The first receiving unit is used to receive first information from the network device; The first information is used to indicate the first spatial relationship; The first spatial relationship is used for the transmission of control information and / or data information; the first spatial relationship is the Transmission Configuration Indication (TCI-States) information in the Physical Downlink Control Channel (PDCCH) Uplink / Downlink Control Information (DCI) transmitted on the first Control Resource Set (CORESET), or the TCI-States information indicated by the DCI on the first PDCCH; the first spatial relationship is used to indicate at least one of the following: Spatial relationship of PDSCH scheduled on the second CORESET and the second CORESET; Spatial relationship of PDSCH scheduled on the second PDCCH and the second PDCCH; The first sending unit is used to send feedback information corresponding to the first information; the feedback information is used to explain that the first spatial relationship is used. The first transmitting unit is further configured to transmit specified information on the first channel according to the first spatial relationship; The transmission of specified information includes at least one of the following: transmission of feedback information, transmission of channel state information, transmission of channel sounding reference signal (SRS), transmission of PUCCH data, and transmission of PUSCH data.

22. A data transmission device, characterized in that, include: The second sending unit is used to send the first information to the terminal; The first information is used to indicate the first spatial relationship; The first spatial relationship is used for the transmission of control information and / or data information; the first spatial relationship is the Transmission Configuration Indication (TCI-States) information in the Physical Downlink Control Channel (PDCCH) Uplink / Downlink Control Information (DCI) transmitted on the first Control Resource Set (CORESET), or the TCI-States information indicated by the DCI on the first PDCCH; the first spatial relationship is used to indicate at least one of the following: Indicates the spatial relationship of PDSCHs scheduled on the second CORESET and the second CORESET; Indicates the spatial relationship between the PDSCHs scheduled on the second PDCCH and the second PDCCH; The second receiving unit is used to receive feedback information from the terminal regarding the first information and determine that the first spatial relationship is used. The second receiving unit is further configured to receive control information transmitted by the terminal in the first space and on the first channel; The control information includes at least one of the following: feedback information, channel state information, SRS, PUCCH data, and PUSCH data.

23. A first communication device, characterized in that, include: A first processor and a first memory for storing computer programs capable of running on the processor. Wherein, when the first processor is used to run the computer program, it performs the steps of the method according to any one of claims 1 to 10.

24. A second communication device, characterized in that, include: A second processor and a second memory for storing computer programs that can run on the processor. Wherein, when the second processor is used to run the computer program, it performs the steps of the method according to any one of claims 11 to 20.

25. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 10, or the steps of the method according to any one of claims 11 to 20.

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