CN114727388A

CN114727388A - Data transmission method, device, related equipment and storage medium

Info

Publication number: CN114727388A
Application number: CN202110003680.2A
Authority: CN
Inventors: 郑毅; 李岩; 王飞; 左君; 李男
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2022-07-08

Abstract

The invention discloses a data transmission method, a data transmission device, first communication equipment, second communication equipment and a storage medium. Wherein the method comprises the following steps: the first communication equipment receives first information from the network equipment; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmission of control information and/or data information.

Description

Data transmission method, device, related equipment and storage medium

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a data transmission method, apparatus, related device, and storage medium.

Background

Recent third Generation Partnership Project (3 GPP) has developed further enhancement of MIMO (Multiple Input Multiple Output) technology, and new research needs are mainly directed to enhancement of higher mobility, considering data channels, control channels, uplink and downlink, discontinuous (intra-band) Carrier Aggregation (CA), and the like. The design goal is to hope to be able to quickly update the data direction of the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH), and to ensure better data transmission in case of high-speed movement, i.e. to support higher mobility.

Currently, in the related art, the spatial relationship between a Control Resource Set (CORESET) and a PDSCH is updated through an independent Multimedia Access Control (MAC) Control Element (CE, Control Element), and the spatial relationship needs to be waited for taking effect (i.e., being used); therefore, causing the spatial relationship to change causes a delay.

Disclosure of Invention

In order to solve the existing technical problem, embodiments of the present invention provide a data transmission method, an apparatus, a related device, and a storage medium.

The technical scheme of the embodiment of the invention is realized as follows:

at least one embodiment of the present invention provides a data transmission method applied to a first communication device, including:

receiving first information from a network device; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmission of control information and/or data information.

Further, in accordance with at least one embodiment of the present invention, the method further comprises:

receiving time information; the time information is used for indicating the usage time of the first spatial relationship.

Further, in accordance with at least one embodiment of the present invention, the time information includes: slot offset (slot offset) indicated in the Time Domain Resource Allocation (TDRA).

sending feedback information corresponding to the first information; the feedback information is used to indicate that the first spatial relationship is used.

Further in accordance with at least one embodiment of the present invention, the receiving the first information from the network device includes at least one of:

receiving a state (TCI-States) of a transmission configuration indication in Downlink Control Information (DCI) sent by a network device by using a PDCCH scheduled by a first CORESET;

receiving TCI-States in DCI sent by network equipment by adopting a 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 for indicating the first spatial relationship.

Further in accordance with at least one embodiment of the present invention, the first spatial relationship is indicative of at least one of:

a spatial relationship of the second CORESET and the PDSCH scheduled on the second CORESET;

a spatial relationship of the second PDCCH and the PDSCH scheduled on the second PDCCH.

Further in accordance with at least one embodiment of the present invention, the second CORESET includes at least one of: a CORESET configured for at least one terminal, a CORESET configured by the system, and a CORESET indicated by the system.

receiving second information according to the first spatial relationship; the second information includes at least one of: a second CORESET and a second PDCCH; the second information does not include information indicating a spatial relationship;

demodulating the PDSCH scheduled on the second information using the first spatial relationship.

receiving the PDSCH on at least one symbol after receiving the second information.

Further, in accordance with at least one embodiment of the present invention, the method further comprises at least one of:

according to the first spatial relationship, sending feedback information to network equipment aiming at the PDSCH;

and transmitting PUCCH information or uplink control information according to the first spatial relationship.

and before receiving a second spatial relationship indicated by third information, transmitting control information and/or data information according to a first spatial relationship indicated by the first information.

transmitting the designation information on the first channel according to the first spatial relationship;

the sending designation information includes at least one of: transmitting feedback information, transmitting channel state information, transmitting a channel Sounding Reference Signal (SRS), transmitting data of a PUCCH, and transmitting data of a PUSCH.

Further in accordance with at least one embodiment of the present invention, the respective spatial relationships include at least one of:

quasi co-location (QCL), Transmission Configuration Indication (TCI), doppler shift, doppler spread, average delay, delay spread, spatial receiving parameters, antenna port Quasi co-location, transmit filtering of spatial domain, receive filtering of spatial domain, spatial relationship information, spatial filtering, spatial transmit filtering, spatial configuration information;

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: TCI status.

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

sending first information to a terminal; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmission of control information and/or data information.

and sending time information, wherein the time information is used for indicating the use time of the first spatial relationship.

Further, in accordance with at least one embodiment of the present invention, the time information includes: the time slot offset indicated in the time domain resource allocation TDRA.

receiving feedback information from a terminal for the first information, and determining that the first spatial relationship is used.

Further, in accordance with at least one embodiment of the present invention, the sending the first information to the terminal includes at least one of:

sending TCI-States in the DCI to the terminal by adopting the PDCCH resource scheduled by the first CORESET;

adopting a first PDCCH resource to send the TCI-States in the DCI to the terminal;

wherein the first CORESET and/or the first PDCCH are configured based on RRC or MAC CE;

indicating a second CORESET and a spatial relationship of a scheduled PDSCH on the second CORESET;

indicating a spatial relationship of the second PDCCH and the scheduled PDSCH on the second PDCCH.

sending second information according to the first spatial relationship; the second information does not include information indicating a spatial relationship; the second information includes at least one of: a second CORESET and a second PDCCH; the PDSCH scheduled on the second information is demodulated or transmitted using a first spatial relationship.

transmitting the PDSCH on at least one symbol after the second information is transmitted.

receiving feedback information sent by a terminal aiming at the PDSCH according to the first spatial relationship;

and receiving PUCCH information according to the first spatial relationship.

and before the feedback information is received, transmitting control information and/or data information according to the space relation indicated last time.

receiving control information sent by a terminal on a first channel in the first space;

the control information comprises at least one of the following: feedback information, channel state information, SRS, data of PUCCH, data of PUSCH.

Further in accordance with at least one embodiment of the present invention, the spatial relationship includes at least one of the following parameters:

QCL, TCI, Doppler shift, Doppler spread, average delay, delay spread, space receiving parameters, antenna port quasi co-location, transmitting filtering of a space domain, receiving filtering of the space domain, space relation information, space filtering, space transmitting filtering and space configuration information;

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: TCI status.

At least one embodiment of the present invention provides a data transmission apparatus including:

a first receiving unit, configured to receive first information from a network device; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmission of control information and/or data information.

Furthermore, according to at least one embodiment of the present invention, the first receiving unit is further configured to receive time information; the time information is used for indicating the usage time of the first spatial relationship.

Further, in accordance with at least one embodiment of the present invention, the time information includes: the slot offset indicated in the TDRA.

Furthermore, in accordance with 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 indicate that the first spatial relationship is used.

Further, according to at least one embodiment of the present invention, the first receiving unit is configured to receive first information from a network device, and includes at least one of:

receiving TCI-States in DCI sent by network equipment by adopting a PDCCH scheduled by first CORESET;

the first CORESET and/or the first PDCCH are configured based on RRC or MAC CE;

Further, according to at least one embodiment of the present invention, 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: a second CORESET and a second PDCCH; the second information does not include information indicating a spatial relationship;

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

Further, according to at least one embodiment of the present invention, the first sending unit is further configured to perform at least one of:

Furthermore, according to at least one embodiment of the present invention, 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.

Further, according to at least one embodiment of the present invention, the first sending unit is further configured to send the specific information on the first channel according to the first spatial relationship;

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: TCI status.

In practical application, the first sending unit and the first receiving unit may be implemented by a communication interface in an information transmission device.

In order to implement the method on the second communication device side in the embodiment of the present invention, an embodiment of the present invention further provides a data transmission apparatus, which is disposed on the second communication device, and as shown in fig. 8, the apparatus includes:

a second sending unit, configured to send the first information to the terminal; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmission of control information and/or data information.

Furthermore, according to at least one embodiment of the present invention, the second sending unit is further configured to send time information, where the time information is used to indicate a usage time of the first spatial relationship.

Further, in accordance with at least one embodiment of the present invention, the apparatus further comprises: a second receiving unit, configured to receive feedback information from the terminal for the first information, and determine that the first spatial relationship is used.

Further, according to at least one embodiment of the present invention, the second transmitting unit is configured to transmit the first information to the terminal; specifically, at least one of the following is performed:

Further, 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 include information indicating a spatial relationship; the second information includes at least one of: a second CORESET and a second PDCCH; the PDSCH scheduled on the second information is demodulated or transmitted using a first spatial relationship.

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

Further, according to at least one embodiment of the present invention, the second receiving unit is further configured to perform at least one of:

and receiving PUCCH information according to the first spatial relationship.

Furthermore, according to at least one embodiment of the present invention, the second receiving unit or the second sending unit is further configured to transmit control information and/or data information according to the spatial relationship indicated last time before the feedback information is received.

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

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: TCI status.

the TCI-States in the DCI are sent to a terminal by adopting a first PDCCH resource;

and receiving PUCCH information according to the first spatial relationship.

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: TCI status.

At least one embodiment of the present invention also provides a first communication device including: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is configured to execute the steps of any one of the above-mentioned methods of the first communication device side when running the computer program.

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

wherein the second processor is configured to execute the steps of any one of the methods of the second communication device side when running the computer program.

At least one embodiment of the present invention further provides a storage medium on which a computer program is stored, which, when being executed by a processor, implements the steps of any of the methods of the first communication device side described above, or implements the steps of any of the methods of the second communication device side described above.

According to the data transmission method, the data transmission device, the communication equipment and the storage medium, the second communication equipment sends the first information to the terminal; the first communication equipment receives first information from the network equipment; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmitting control information and/or data information; in this way, the first spatial relationship is scheduled through the specific information (such as the first information), so that the scheduling efficiency is improved to meet and support the situation of higher moving speed.

Drawings

Fig. 1 is a schematic flow chart of a method for adjusting a spatial relationship between a PDCCH and a PDSCH in the related art;

FIG. 2 is a schematic diagram of a time threshold implementation;

FIG. 3 is a diagram illustrating resource scheduling;

fig. 4 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;

fig. 5 is a schematic flow chart of another data transmission method according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating a further data transmission method according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a first communication device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a second communication device according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a flowchart of a method for adjusting a spatial relationship or a propagation direction of a PDCCH and a PDSCH in the related art, where the method takes a Single Side Band (SSB) as an example, a terminal generally considers that relatively stable energy measurement information can be obtained after 5 measurements, and determines whether a beam quality meets a subsequent operating requirement or selects a better beam. After the terminal performs 5 or more measurements, the terminal receives Power through the Reference Signal of the uplink feedback layer 1 (L1-RSRP, L1-Reference Signal Receiving Power). And the base station judges whether the CORESET or the PDSCH needs to be updated or not according to the information fed back by the terminal.

And the base station determines that the CORESET or the PDSCH needs to be updated according to the information fed back by the terminal, and then executes updating operation. The spatial relationship between the core set (configured as a control resource set for transmitting Downlink Control Information (DCI)) and the PDSCH is updated by an independent MAC CE.

Specifically, without any enhancement, the base station respectively transmits 2 pieces of MAC CE information, and respectively updates spatial relationships (spatial relationships) of the CORESET and the PDSCH, the spatial relationships at least indicating a beam direction, a transmission direction, a spatial transmission direction, (transmission or reception) spatial filtering, Quasi co-location information (QCL, Quasi co-location) or type (type), a spatial state, spatial information, a scheduling direction of the base station for the terminal, and the like. After receiving the spatial information update of the MAC CE of the CORESET, the terminal receives the spatial information according to a new spatial relationship; the PDSCH is further notified of which direction the UE specifically uses, by an indication of a Transmission Configuration Indicator (TCI) in Downlink Control Information (DCI). For the MAC CE to take effect, the spatial relationship between the corresponding CORESET and the PDSCH needs to take effect after the UE sends uplink Acknowledgement (ACK) information of the MAC CE and waits for 3 ms. In general, it is difficult to ensure that the 2 MAC CEs are transmitted simultaneously and received by the UE accurately at one time. That is, both transmission and validation of the MAC CE will result in spatial relationship changes that will result in delays.

And then, the UE receives the CORESET and the PDCCH on the spatial relationship newly indicated by the MAC CE, and receives the information of the TCI corresponding to the PDSCH on the PDCCH. At this time, it is also necessary to wait for a time threshold (timeduration for qcl) before downlink transmission or reception of the corresponding PDSCH can be performed. The time threshold is mainly used for processing the analysis of DCI, and the adjustment Quasi co-location (QCL) of the spatial relationship of the UE. After completion of reception of the PDSCH, whether or not correct transmission is fed back to the base station.

In the related art, the configuration methods of the spatial relationship between the control channel and the data channel are as follows:

configuration of spatial relationship (e.g. beam direction) for CORESET:

if the RRC is only configured with a TCI state, the beam direction of the CORESET is configured according to the TCI state; if the update is needed, the configuration needs to be performed again in an RRC configuration mode, which is time-consuming;

if the RRC configures the states of multiple TCIs, it needs to use the MAC CE to indicate one of them to configure the beam direction of CORESET;

if the RRC configures the states of a plurality of TCIs and no indication of the MAC CE exists, assuming according to the spatial relationship of the initially accessed SSB;

configuration of spatial relationship (e.g., beam direction) for PDSCH:

specifically, the method is implemented by RRC configuration and MAC CE indication (selection). Specifically, the method comprises the following steps:

a state of 8 TCIs can be configured by RRC and then one of them is indicated by TCI as a beam direction of PDSCH. However, the timing of the data transmission is also greater than or equal to a time threshold (timeduration for qcl).

If the RRC configuration is completed but there is no indication of the MAC CE, the SSB of the initial access is directly adopted.

If the RRC configuration is completed and the MAC CE also indicates, but the DCI indication is met and the time threshold (timeduration for qcl) is not reached, the latest slot (slot) and the state of TCI of the ID of the smallest CORESET are used.

Wherein the time threshold (timeDurationForQCL) is specified as follows:

FIG. 2 is a schematic diagram of a time threshold implementation; as shown in figure 2 of the drawings, in which,

when the subcarrier spacing (SCS) is 120khz, 14 or 28 symbols are occupied, namely 1-2 slots later;

the time threshold is mainly used for: 1) processing of Downlink Control Information (DCI), and 2) processing of quasi public address (QCL) port adjustment.

As described above, since the PDCCH requires a latency threshold (timeduration form qcl) to be able to transmit PDSCH, the introduction of the timeduration form qcl results in all high frequency transmissions, almost all scheduling across slots. It is more complicated in base station design and scheduling algorithm, and it needs to consider 2 or more than 3 slots transmission directions and how to schedule simultaneously.

FIG. 3 is a diagram illustrating resource scheduling; as shown in fig. 3, S1 of Slot 1 in fig. 3 represents PDCCH, S2 of scheduling Slot3 or S3 of Slot 4; s2 of Slot3 and S4 of Slot4 are the corresponding scheduled PDSCH; slot 1 may schedule the PDSCH of Slot3 or the PDSCH portion of Slot 4.

If the time does not satisfy the timeduration formula QCL, the state of the QCL or TCI corresponding to the minimum CORESET ID in the nearest slot needs to be found as a Reference of a Demodulation Reference Signal (DMRS) of the PDSCH. On the one hand, it cannot be guaranteed that the CORESET ID, in which the base station is the smallest for the UE scheduling direction each time, is the scheduling direction. When 2 CORESET repeats in time, it is likely that it is not scheduled in the direction of need. In addition, the CORESET #0 cannot always be used for similar transmission. The main role of core set #0 is to contact SSB (association) and to carry much common control information, which cannot always be used to carry these UE-specific (specific) traffic transmissions, and its capacity is also limited.

In addition, as described above, the spatial relationship between the CORESET and the PDSCH is updated by two MAC CEs, and it cannot be guaranteed that the two MAC CEs are transmitted simultaneously, or the time difference is within an acceptable range, so as to reduce the time delay. The effective time of the MAC CE of 3ms is unavoidable. Therefore, the prior art still has a large lifting space to meet and support the situation of higher moving speed.

Based on this, in various embodiments of the present invention, the second communication device sends the first information to the terminal; the first communication equipment receives first information from the network equipment; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmission of control information and/or data information.

The embodiment of the invention provides a data transmission method, which is applied to first communication equipment, wherein the first communication equipment can be a mobile phone, a tablet computer, a notebook computer, a computer and other terminals; as shown in fig. 4, the method includes:

step 401, receiving first information from a network device; the first information is used for indicating a first spatial relationship;

wherein the first spatial relationship is used for transmission of control information and/or data information.

I.e. the first spatial relationship, may be used to indicate only the direction of the control channel; directions indicating the control channel (transmitting CORESET or PDCCH) and the data channel (transmitting PDSCH) may also be covered.

In practical applications, it is necessary to wait for the validation time (i.e. the time determined to be used) of the first spatial relationship to be considered, so that the spatial relationship change may cause a delay. In order to improve communication efficiency, the effective time may be set to meet and support the case of higher moving speed.

Based on this, in one embodiment, a method of determining a usage time (i.e., a lifetime) is provided.

Specifically, the method may further include:

Based on the time information, the terminal may determine at which point in time the transmission of control information and/or data information may be performed according to the first spatial relationship.

Here, the first information may carry the time information, so that the used time of the first spatial relationship indicated by the first information may be determined based on the time information.

The time information may also be transmitted separately, so that the used time of the first spatial relationship indicated by the first information is determined based on the received time information.

Here, the time information includes: slot offset (slot offset) indicated in the Time Domain Resource Allocation (TDRA).

In another embodiment, another method of determining a time of use is provided.

Specifically, the method may further include:

Correspondingly, the base station receives the feedback information and determines that the first spatial relationship is used.

The feedback information of the first information may be HARQ-ACK information.

Specifically, after receiving feedback information, such as an acknowledgement (HARQ-ACK) message, of the first spatial relationship indicated by the first information, the base station considers that the spatial relationship indicated by the first information is used; the terminal considers that the next CORESET can be received after the feedback information is sent, i.e. the terminal can receive the second CORESET or all CORESETs according to the corresponding first spatial relationship.

That is, after the terminal sends the feedback information, it may consider that the first spatial relationship is used.

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

receiving a Transmission Configuration Indication state (TCI-States, Transmission Configuration Indication-States) in physical Downlink Control Information (DCI) sent by a network device by using a PDCCH scheduled by a first CORESET;

The network device may be a base station.

Here, the spatial relationship may be configured by a specific first CORESET or first PDCCH. That is, the first core set may be a core set configured by RRC or MAC CE specifically for indicating a spatial state; the first PDCCH may be a downlink control channel configured through RRC or MAC CE specifically for indicating a spatial state.

The first spatial relationship is TCI-States information in DCI (downlink control information) on the PDCCH sent on the first CORESET, or TCI-States information indicated by the DCI on the first PDCCH;

the above-mentioned spatial relationship indicated by the TCI may be based on RRC configuration or based on a set of spatial relationships after MAC CE activation or update.

In combination with the above time information, the DCI carried on the first core set or the first PDCCH may have a time for scheduling data transmission, that is, the time information may be used to indicate that, at this time, the first spatial relationship is valid.

In an embodiment, the first spatial relationship is used to indicate at least one of:

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

In an embodiment, the method further comprises:

receiving second information according to the first spatial relationship; the second information includes at least one of: a second CORESET and a second PDCCH;

Wherein the second CORESET comprises at least one of: a configured CORESET for at least one terminal (including one or more or all terminals), a system configured CORESET, a system indicated CORESET.

Here, the second information does not contain information indicating a spatial relationship; that is to say that the temperature of the molten steel,

the second CORESET may not contain information of a spatial relationship correlation indication; i.e. the second CORESET may not be used to indicate spatial relationships.

The second PDCCH may not include information of a spatial relationship correlation indication; that is, the second PDCCH may not be used to indicate a spatial relationship.

Specifically, after receiving the first spatial relationship, the terminal may receive a second CORESET or all CORESETs or a second PDCCH in the first spatial relationship;

the terminal demodulates and demodulates the first PDSCH transmission scheduled on the second CORESET (referred to as the CORESET for the terminal, the CORESET for a plurality of or all terminals) or the second PDCCH (both the second CORESET and the second PDCCH are collectively referred to as second information) by using the first spatial relationship. That is, the terminal may consider that the PDSCH scheduled by the second core set or the second PDCCH may be received and demodulated using the first spatial relationship. Wherein, the downlink DCI information of the second PDCCH may not include a TCI status (TCI-States).

And the UE carries out uplink transmission on the HARQ-ACK feedback information of the PDSCH or the PUCCH according to the first spatial relation.

In an embodiment, the method further comprises:

receiving the PDSCH on at least one symbol (symbol) after receiving the second information.

Specifically, the PDSCH may be the next symbol after the last symbol corresponding to the PDCCH. The UE may receive the first PDSCH several symbols (symbols) after receiving the second PDCCH without the need for a latency threshold.

In an embodiment, the method further comprises at least one of:

The feedback information may be HARQ-ACK information.

In an embodiment, the method further comprises:

and transmitting 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.

Correspondingly, the base station still transmits according to the space relationship indicated last time before receiving the feedback information.

In some embodiments, the method further comprises:

and 402, transmitting control information and/or data information according to the first spatial relationship.

Specifically, in an embodiment, the method further includes:

sending the designated information on the first channel according to the first spatial relationship;

the sending designation information includes at least one of: transmitting feedback information, transmitting channel state information, transmitting a channel Sounding Reference Signal (SRS), transmitting data of a PUCCH, transmitting data of a PUSCH.

Here, according to the first spatial relationship, spatial filtering (spatial filter), spatial transmission filtering (spatial transmission filter), spatial configuration information (spatial setting), and the like, which are indicated according to the first spatial relationship, may be referred to.

Specifically, the corresponding spatial relationship (e.g., the first spatial relationship, the second spatial relationship, etc., as described above) includes at least one of:

quasi co-location (QCL), Transmission Configuration Indication (TCI), Doppler shift (Doppler shift), Doppler spread (Doppler spread), average delay (average delay), delay spread (delay spread), spatial RX parameters (spatial RX parameters), Antenna port Quasi co-location (Antenna port co-location), spatial domain transmit filtering (spatial domain transmit filter), spatial domain receive filtering (spatial domain receive filter), spatial relationship information (spatial relationship info), spatial filtering (spatial filter), spatial transmit filtering (spatial transmission filter), spatial configuration information (spatial configuration);

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: status of TCI (TCI-States).

Correspondingly, the embodiment of the invention also provides a data transmission method, which is applied to a second communication device, wherein the second communication device can be a base station; as shown in fig. 5, the method includes:

step 501, sending first information to a terminal; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmission of control information and/or data information.

Specifically, the sending of the first information to the terminal includes at least one of:

sending a Transmission Configuration Indication state (TCI-States, Transmission Configuration Indication-States) in Downlink Control Information (DCI) to a terminal by adopting a PDCCH scheduled by a first CORESET;

adopting a first PDCCH to send TCI-States in the DCI to a terminal;

wherein, the first CORESET is used for indicating a spatial relationship; the first CORESET is configured based on RRC or MAC CE;

the first PDCCH is used for indicating a spatial relationship; the first CORESET is configured based on RRC or MAC CE.

Here, the spatial relationship may be configured by a specific first CORESET or first PDCCH. That is, the first CORESET may be a CORESET configured by RRC or MMC CE specifically for indicating a spatial state; the first PDCCH may be a downlink control channel configured through RRC or MMC CE specifically for indicating a spatial state.

The first spatial relationship is TCI-States in DCI (downlink control information) on a PDCCH (physical downlink control channel) transmitted on the first CORESET or TCI-States indicated by the DCI on the first PDCCH;

the above-mentioned spatial relationship or spatial information indicated by the TCI may be based on RRC configuration or based on a set of spatial relationships activated or updated by the MAC CE.

In one embodiment, a method of determining a time to be used (i.e., a time to live) is provided.

Specifically, the method further comprises:

The usage time may also be understood as a time when the first spatial relationship is used, an effective time, that is, the spatial relationship takes effect after the corresponding usage time; and transmitting the downlink control information, the downlink data information and the uplink feedback information which are transmitted after the using time according to a first spatial relationship.

Wherein the time information includes: a time slot offset indicated in the time domain resource allocation TD-RA.

In another embodiment, another method of determining a time of use is provided.

Specifically, the method further comprises:

and after receiving feedback information sent by the terminal aiming at the first information, determining that the first spatial relationship is used.

Here, the time when the base station receives the feedback information of the first information may be regarded as the effective time of the first spatial relationship.

Correspondingly, the terminal needs to send feedback information corresponding to the first information; the feedback information is used to indicate that the first spatial relationship is used.

In one embodiment, the second CORESET includes at least one of: a CORESET configured for at least one terminal, a CORESET configured by the system, and a CORESET indicated by the system.

In an embodiment, the method further comprises:

sending second information according to the first spatial relationship; the second information does not include information indicating a spatial relationship; the second information includes at least one of: a second CORESET and a second PDCCH; the first PDSCH scheduled on the second information is demodulated or transmitted using a first spatial relationship.

Here, the second information does not contain information indicating a spatial relationship; that is to say that the first and second electrodes,

the second CORESET may not contain information of a spatial relationship correlation indication; i.e. the third CORESET may not be used to indicate a spatial relationship.

The second PDCCH may not include information of a spatial relationship correlation indication; that is, the third PDCCH may not be used to indicate a spatial relationship.

In an embodiment, the method further comprises:

transmitting the PDSCH on at least one symbol (symbol) after the second information is transmitted.

Specifically, the PDSCH may be the next symbol after the last symbol corresponding to the PDCCH. The terminal may receive the first PDSCH several symbols (symbols) after receiving the second PDCCH without a latency threshold (timeduration for qcl).

In an embodiment, the method further comprises at least one of:

and receiving PUCCH information according to the first spatial relationship.

In an embodiment, the method further comprises:

Specifically, before the feedback information for the first spatial relationship is received, the first spatial relationship is not considered to be valid or is not considered to be correctly received or transmitted, and the transmission of the control information and/or the data information is performed according to the spatial relationship indicated last before the first spatial relationship is indicated.

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

In an embodiment, the method further comprises:

receiving control information sent by the terminal on a first channel indicated by the first spatial relationship;

In one embodiment, the spatial relationship comprises at least one of the following parameters:

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: TCI status.

The present invention will be described in further detail with reference to the following application examples.

The first embodiment provides an indication method of a spatial relationship.

The first method is as follows:

001, configuring a first CORESET (marked as CORESET #1) by the base station;

the CORESET #1 is used to indicate the UE subsequent spatial relationship (equivalent to the first spatial relationship in the method shown in fig. 4).

The spatial relationship is at least used for indicating a beam direction, a propagation direction, a spatial transmission direction, a spatial state, a scheduling direction of a spatial information base station for a terminal, and the like).

Step 002, after receiving the first TCI status (denoted as TCI #1, where TCI #1 is used to indicate the first spatial relationship) indicated by the PDCCH on the CORESET #1, the UE executes at least one of the following according to the first spatial relationship indicated by TCI # 1:

receiving a subsequent second CORESET or receiving PDCCH information on all subsequent CORESETs on the first spatial relationship;

and receiving the PDSCH scheduled on the PDCCH, and performing HARQ-ACK feedback on the transmission of the PDSCH on the first spatial relation, or performing uplink transmission of the PUCCH, SRS and PUSCH on the first spatial relation.

It should be noted that the UE transmits according to the spatial relationship indicated by TCI #1 before receiving the new TCI-States indicated by the control channel carried on the first CORESET.

The used time with respect to the spatial relationship is explained as follows:

in an embodiment, the UE may consider that the first spatial relationship is used after receiving the first spatial relationship indicated by the core set #1 and feeding back the corresponding first HARQ-ACK information; correspondingly, after receiving the first HARQ-ACK information corresponding to the first spatial relationship sent by the core set #1, the base station considers that the spatial relationship is used.

In another embodiment, the UE may consider the time of receipt of the data transmission indicated on CORESET #1 as the used time of the first spatial relationship.

That is, the UE may not feed back the HARQ-ACK information, and the UE may consider the first spatial relationship to take effect according to the time specified or agreed by the protocol.

For example, it may be specified or agreed to take effect X symbols or N slots after the time indicated on CORESET #1 is received.

And the second embodiment provides another indication method of the spatial relationship.

Step 011, the base station configures a first PDCCH (denoted as PDCCH # 1);

the PDCCH #1 is used to indicate the UE's subsequent spatial relationship or spatial transmission direction (corresponding to the first spatial relationship in the method shown in fig. 4).

Step 012, after receiving the first TCI (denoted as TCI #1, where TCI #1 is used to indicate the first spatial relationship) indicated on PDCCH #1, the UE receives 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 performing HARQ-ACK feedback on the transmission of the PDSCH on the first spatial relationship indicated by the TCI #1, or performing uplink transmission of the PUCCH, SRS and PUSCH on the first spatial relationship.

Here, the first PDCCH and the second PDCCH are both downlink control channels configured or specified by the system.

An embodiment of the present invention provides a data transmission method, where the method is used to adjust a spatial relationship, as shown in fig. 6, and a terminal generally considers that after 5 measurements, a relatively stable energy measurement information can be obtained, and determines whether a beam quality meets a subsequent working requirement or selects a better beam, in the method, an SSB is taken as an example. After the terminal performs 5 or more measurements, the RSRP of the uplink feedback layer 1 is passed (L1-RSRP). And the base station judges whether the CORESET or the PDSCH needs to be updated or not according to the information fed back by the UE. The base station determines, according to the UE feedback decision, that the transmission direction or spatial filtering (corresponding to a spatial relationship) of the CORESET or PDSCH needs to be updated, and then performs an update operation. The method specifically comprises the following steps:

step 601, the base station transmits a PDCCH according to CORESET #1 (corresponding to a first information) to indicate TCI #1 at the next time;

here, the TCI #1 is used to indicate a transmission direction of the next CORESET (referred to as CORESET # 2).

The transmission direction of CORESET corresponds to one of the spatial relations in the methods shown in fig. 4 and 5.

The next time may be a specific transmission time; so that the transmission direction or spatial filtering (all transmission directions may be equivalent to spatial filtering) indicated by the TCI #1 may be effective at the corresponding transmission time.

Step 602, the terminal sends HARQ-ACK information through an uplink PUCCH, indicating that the TCI #1 has been correctly received;

specifically, when the terminal receives the information of TCI #1 transmitted on CORESET #1 and demodulates correctly, it can confirm correct reception and send HARQ-ACK information, specifically, an Acknowledgement (ACK) or 1; if not received or demodulated correctly, a Negative Acknowledgement message (NACK) or 0 is sent.

Step 603, the base station sends PDCCH scheduling on CORESET #2 and indicates the actual transmission of PDSCH;

through the step 603, the transmission, ACK feedback and appointed effective time of the MAC CE can be saved, and if the ACK information is received, the MAC CE waits for 3 ms;

saving the time threshold of timeDurationForQCL, wherein the time threshold comprises the processes of decoding and antenna port adjustment; the existing system needs to receive in the direction indicated by the DCI after waiting for the time threshold of timeDurationForQCL after receiving the DCI correctly.

Step 604, the terminal feeds back the correct transmission of the PDSCH through the uplink PUCCH;

for example, a message carrying HARQ-ACK information, such as ACK or NACK information, may be transmitted.

Step 605, the base station continues to transmit data on the spatial filtering indicated by TCI #1, and transmits PDCCH scheduling on CORESET #2 and indicates PDSCH transmission;

here, when the CORESET #2 does not include the TCI status information, the status of the TCI adopted by the previous schedule is continued, that is, the transmission is performed in the beam direction indicated by the TCI # 1.

That is, CORESET #2 may continue to schedule PDSCH transmissions at the next time of transmission;

CORESET #2 always adopts the state of TCI #1, and does not indicate the state of TCI when scheduling PDSCH; according to the state of TCI #1, continuous transmission is performed on CORESET #2 (if the speed is high, this may be the main, and no attention needs to be paid to other CORESETs).

Step 606, the terminal feeds back the correct transmission of the PDSCH through the uplink PUCCH;

step 607, sending PDCCH scheduling on CORESET #2 to indicate TCI #2 at the next time;

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

step 608, the terminal sends HARQ-ACK information through the uplink PUCCH, and feeds back that TCI #2 has been correctly received;

specifically, referring to the description of step 602, an acknowledgement message or a negative acknowledgement message may be fed back through ACK or NACK. And will not be described in detail herein.

Updating the transmission direction of the CORESET is achieved through steps 607 and 608.

In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a data transmission apparatus, which is disposed on the first communication device, and as shown in fig. 7, the apparatus includes:

In an embodiment, the first receiving unit is further configured to receive time information; the time information is used for indicating the usage time of the first spatial relationship.

In one embodiment, the time information includes: the slot offset indicated in the TDRA.

In one embodiment, the apparatus further comprises: a first transmitting unit, configured to transmit feedback information corresponding to the first information; the feedback information is used to indicate that the first spatial relationship is used.

In an embodiment, the first receiving unit is configured to receive first information from a network device, where the first information includes at least one of:

receiving TCI-States in DCI sent by network equipment by using a PDCCH scheduled by a first CORESET;

the first CORESET and/or the first PDCCH are configured based on RRC or MAC CE;

In an 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: a second CORESET and a second PDCCH; the second information does not include information indicating a spatial relationship;

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

In an embodiment, the first sending unit is further configured to perform at least one of:

In an 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.

In an embodiment, the first sending unit is further configured to send the specific information on the first channel according to the first spatial relationship;

the sending specification information includes at least one of: transmitting feedback information, transmitting channel state information, transmitting a channel Sounding Reference Signal (SRS), transmitting data of a Physical Uplink Control Channel (PUCCH), and transmitting data of a Physical Uplink Shared Channel (PUSCH).

In an embodiment, the respective spatial relationship comprises at least one of:

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: TCI status.

In an embodiment, the second sending unit is further configured to send time information, where the time information is used to indicate a usage time of the first spatial relationship.

In one embodiment, the apparatus further comprises: a second receiving unit, configured to receive feedback information from the terminal for the first information, and determine that the first spatial relationship is used.

In an embodiment, the second sending unit is configured to send the first information to the terminal; specifically, at least one of the following is performed:

In an embodiment, the second sending unit is configured to send second information according to the first spatial relationship; the second information does not include information indicating a spatial relationship; the second information includes at least one of: a second CORESET and a second PDCCH; the PDSCH scheduled on the second information is demodulated or transmitted using a first spatial relationship.

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

In an embodiment, the second receiving unit is further configured to perform at least one of:

and receiving PUCCH information according to the first spatial relationship.

In an embodiment, the second receiving unit or the second sending unit is further configured to transmit control information and/or data information according to the spatial relationship indicated last time before the feedback information is received.

In an embodiment, the second receiving unit is configured to receive control information sent by a terminal in the first space on a first channel;

In an embodiment, the spatial relationship includes at least one of the following parameters:

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: TCI status.

In practical application, the second receiving unit and the second sending unit may be implemented by a communication interface in a data transmission device.

It should be noted that: in the data transmission device provided in the above embodiment, only the division of the program modules is exemplified when data transmission is performed, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the device may 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 provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments and are not described herein again.

Based on the hardware implementation of the program module, and in order to implement the method on the first communication device side in the embodiment of the present invention, an embodiment of the present invention further provides a first communication device, as shown in fig. 9, where the first communication device 90 includes:

a first communication interface 901 capable of performing information interaction with a second communication device;

the first processor 902 is connected to the first communication interface 901 to implement information interaction with the second communication device, and is configured to execute the method provided by one or more technical solutions of the first communication device side when running a computer program. And the computer program is stored on the first memory 903.

Specifically, the first communication interface 901 is specifically configured to receive first information from a network device; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmission of control information and/or data information.

In an embodiment, the first communication interface 901 is further configured to receive time information; the time information is used for indicating the usage time of the first spatial relationship.

The time information comprises: the time slot offset indicated in the time domain resource allocation TDRA.

In an embodiment, the first communication interface 901 is further configured to send feedback information corresponding to the first information; the feedback information is used to indicate that the first spatial relationship is used.

In an embodiment, the first communication interface 901 is specifically configured to execute at least one of the following:

the first CORESET and/or the first PDCCH are configured based on RRC or MAC CE;

a spatial relationship of the second PDCCH and a PDSCH scheduled on the second PDCCH.

In an 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: a second CORESET and a second PDCCH; the second information does not include information indicating a spatial relationship;

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

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

In an embodiment, the first communication interface 901 is further configured to, before receiving the second spatial relationship indicated by the third information, perform transmission of control information and/or data information according to the first spatial relationship indicated by the first information.

In an embodiment, the first communication interface 901 is further configured to send specific information on a first channel according to the first spatial relationship;

the sending designation information includes at least one of: transmitting feedback information, transmitting channel state information, transmitting SRS, transmitting data of PUCCH, transmitting data of PUSCH.

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: TCI status.

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 are not described herein again.

Of course, in practice, the various components of the first communication device 90 are coupled together by a bus system 904. It is understood that the bus system 904 is used to enable communications among the components. The bus system 904 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various buses are labeled as bus system 904 in figure 9.

The first memory 903 in the embodiment of the present invention 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 for operating on the first communication device 90.

The method disclosed in the above embodiments of the present invention may be applied to the first processor 902, or implemented by the first processor 902. The first processor 902 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or 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 device, discrete gate or transistor logic device, discrete hardware component, or the like. The first processor 902 may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the first memory 903, and the first processor 902 reads the information in the first memory 903 and performs the steps of the foregoing method in combination with its hardware.

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, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

Based on the hardware implementation of the program modules, and in order to implement the method on the second communication device side in the embodiment of the present invention, as shown in fig. 10, the second communication device 100 includes:

a second communication interface 1001 capable of performing information interaction with the first communication device;

the second processor 1002 is connected to the second communication interface 1001 to implement information interaction with the first communication device, and is configured to execute the method provided by one or more technical solutions of the second communication device side when running a computer program. And the computer program is stored on the second memory 1003.

Specifically, a second communication interface 1001 for receiving SCI;

and a second processor 1002, configured to obtain resource allocation information of the SFCI in the SCI according to the first identifier.

In an embodiment, the second communication interface 1001 is specifically configured to send first information to a terminal; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmission of control information and/or data information.

In an embodiment, the second communication interface 1001 is further configured to send time information, where the time information is used to indicate a usage time of the first spatial relationship.

In an embodiment, the second communication interface 1001 is further configured to receive feedback information from a terminal for the first information, and determine that the first spatial relationship is used.

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

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

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

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

and receiving PUCCH information according to the first spatial relationship.

In an embodiment, the second communication interface 1001 is further configured to transmit control information and/or data information according to a spatial relationship indicated last time before the feedback information is received.

In an embodiment, the second communication interface 1001 is further configured to receive control information sent by a terminal on a first channel in the first space;

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: TCI status.

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 are not described herein again.

Of course, in practice, the various components of the second communication device 100 are coupled together by the bus system 1004. It is understood that the bus system 1004 is used to enable connected communication between these components. The bus system 1004 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for the sake of clarity the various busses are labeled in fig. 10 as the bus system 1004.

The second memory 1003 in the embodiment of the present invention is used to store various types of data to support the operation of the second communication apparatus 100. Examples of such data include: any computer program for operating on the second communication device 100.

The method disclosed in the above embodiments of the present invention may be applied to the second processor 1002, or implemented by the second processor 1002. The second processor 1002 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by an integrated logic circuit of hardware or an instruction in the form of software in the second processor 1002. The second processor 1002 may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or the like. The second processor 1002 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 1003, and the second processor 1002 reads the information in the second memory 1003 and completes the steps of the foregoing method in combination with the hardware thereof.

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 for performing the aforementioned methods.

It is understood that the memories (the first memory 903, the second memory 1003) of the embodiments of the present invention may be either volatile memories or nonvolatile memories, and may also include both volatile and nonvolatile memories. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and 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), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The described memory for embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored;

when the stored computer program is applied to a terminal, the computer program is executed by a processor to execute: receiving first information from a network device; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmission of control information and/or data information.

Specifically, the terminal may execute the method shown in fig. 4, which belongs to the same concept as the method embodiment shown in fig. 4, and the specific implementation process thereof is described in detail in the method embodiment and is not described herein again.

When the computer program is applied to the network device, the computer program is executed by a processor to execute: sending first information to a terminal; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmission of control information and/or data information.

Specifically, the base station may execute the method shown in fig. 5, which belongs to the same concept as the method embodiment shown in fig. 5, and the specific implementation process thereof is described in detail in the method embodiment and is not described herein again.

In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a data transmission system, as shown in fig. 11, where the system includes:

a first communication device 1101 for receiving first information from a network device; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmitting control information and/or data information;

a second communication device 1102 for transmitting the first information to the terminal; the first information is used for indicating a first spatial relationship; the first spatial relationship is used for transmission of control information and/or data information.

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 are not described herein again.

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

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.

It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The technical means described in the embodiments of the present application may be arbitrarily combined without conflict.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A data transmission method applied to a first communication device, comprising:

2. The method of claim 1, further comprising:

3. The method of claim 2, wherein the time information comprises: the time slot offset indicated in the time domain resource allocation TDRA.

4. The method of claim 1, further comprising:

5. The method of claim 1, wherein receiving the first information from the network device comprises at least one of:

receiving a state TCI-States of a transmission configuration indication in a downlink control information DCI sent by a physical downlink control channel PDCCH scheduled by network equipment by using a first control resource set CORESET;

the first CORESET and/or the first PDCCH are configured based on RRC or MAC CE;

6. The method of claim 1, wherein the first spatial relationship is indicative of at least one of:

7. The method of claim 6, wherein the second CORESET comprises at least one of: a CORESET configured for at least one terminal, a CORESET configured by the system, and a CORESET indicated by the system.

8. The method of claim 6, further comprising:

9. The method of claim 8, further comprising:

10. The method of claim 9, further comprising at least one of:

11. The method of claim 1, further comprising:

12. The method of claim 1, further comprising:

13. The method of claim 1, wherein the respective spatial relationships comprise at least one of:

quasi co-location QCL, transmission configuration indication TCI, Doppler shift, Doppler spread, average delay, delay spread, space receiving parameters, antenna port quasi co-location, transmitting filtering of a space domain, receiving filtering of the space domain, space relation information, space filtering, space transmitting filtering and space configuration information;

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: TCI status.

14. A data transmission method, applied to a second communication device, includes:

15. The method of claim 14, further comprising:

16. The method of claim 15, wherein the time information comprises: the time slot offset indicated in the time domain resource allocation TDRA.

17. The method of claim 14, further comprising:

receiving feedback information from the terminal for the first information, and determining that the first spatial relationship is used.

18. The method of claim 14, wherein sending the first information to the terminal comprises at least one of:

19. The method of claim 14, wherein the first spatial relationship is indicative of at least one of:

20. The method of claim 19, wherein the second CORESET comprises at least one of: a CORESET configured for at least one terminal, a CORESET configured by the system, and a CORESET indicated by the system.

21. The method of claim 19, further comprising:

22. The method of claim 21, further comprising:

23. The method of claim 22, further comprising at least one of:

and receiving PUCCH information according to the first spatial relationship.

24. The method of claim 17, further comprising:

25. The method of claim 14, further comprising:

26. The method of claim 14, wherein the spatial relationship comprises at least one of the following parameters:

wherein the QCL includes at least: type of QCL, assumed QCL;

the TCI includes at least: TCI status.

27. A data transmission apparatus, comprising:

28. A data transmission apparatus, comprising:

29. A first communications device, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is adapted to perform the steps of the method of any one of claims 1 to 13 when running the computer program.

30. A second communications device, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is adapted to perform the steps of the method of any of claims 14 to 26 when running the computer program.

31. A storage medium having stored thereon a computer program for performing the steps of the method of any one of claims 1 to 13 or the steps of the method of any one of claims 14 to 26 when executed by a processor.