CN113711661A

CN113711661A - Data transmission method, device and medium

Info

Publication number: CN113711661A
Application number: CN201980095223.1A
Authority: CN
Inventors: 方昀; 徐婧; 陈文洪; 史志华; 黄莹沛
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2021-11-26
Anticipated expiration: 2039-09-30
Also published as: WO2021062812A1; CN113711661B

Abstract

The embodiment of the application discloses a data transmission method, equipment and a medium, which comprise the following steps: determining a first TCI state sequence for repeated transmission of data; when the time domain resource corresponding to the repeated transmission is changed, determining a second TCI state sequence corresponding to the first time domain resource according to the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource, wherein the first time domain resource is the time domain resource corresponding to the repeated transmission after the time domain resource is changed; and according to the second TCI state sequence, performing repeated transmission of the data on the first time domain resource. By adopting the embodiment of the application, the adopted TCIstate can be determined to carry out data transmission when the configuration resource of repeated transmission is changed, so that the reliability of data transmission is improved.

Description

Data transmission method, device and medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data transmission method, device, and medium.

Background

In the communication system, the network side may indicate the repeated Transmission of data by configuring a Transmission Configuration Indicator (TCI) state (state), so that when the terminal performs the repeated Transmission of data, the terminal performs the Transmission of data by using the Transmission parameter indicated by the TCI state, thereby improving the reliability of data Transmission. However, there may be an interruption in the repeated transmission, which may cause a change in the time domain resource used by the terminal in performing the repeated transmission. For the case of interrupted transmission, the terminal cannot determine what TCI state should be used for data transmission.

Disclosure of Invention

Embodiments of the present application provide a data transmission method, device, and medium, which can determine an available TCI state for data transmission according to a correspondence between a time domain resource and a TCI state sequence that are actually transmitted when a configuration resource for repeated transmission changes.

In a first aspect, an embodiment of the present application provides a data transmission method, including:

determining a first transmission configuration indication state, TCI state, sequence for repeated transmission of data, the first TCI state sequence comprising at least one TCI state, each transmission of the repeated transmission being associated with one TCI state in the first TCI state sequence;

when the time domain resource corresponding to the repeated transmission is changed, determining a second TCI state sequence corresponding to the first time domain resource according to a corresponding relation between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource, where the first time domain resource is the time domain resource corresponding to the repeated transmission after the time domain resource is changed, and the second TCI state sequence includes at least one TCI state;

and according to the second TCI state sequence, performing repeated transmission of the data on the first time domain resource, wherein at each transmission, the TCI state corresponding to the transmission in the second TCI state sequence is used.

In a second aspect, an embodiment of the present application provides a data transmission device, where the data transmission device has a function of implementing part or all of the behavior of a terminal in the above method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions. In a possible design, the terminal may include a processing unit configured to enable the terminal to perform the respective functions of the above-described method and a communication unit. The communication unit is used for supporting communication between the terminal and other equipment. The terminal may further comprise a storage unit for coupling with the processing unit, which stores programs (instructions) and data etc. necessary for the terminal. Alternatively, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory. The data transmission device may be a terminal or a network device.

In a third aspect, embodiments of the present application provide a data transmission device, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for performing steps of any of the methods of the first aspect of the embodiments of the present application.

In a fourth aspect, the present application provides a communication system, where the system includes a terminal and/or a network device, and the terminal and/or the network device may perform some or all of the steps described in the method of the first aspect. In another possible design, the system may further include other devices interacting with the terminal or the network device in the solution provided in this embodiment.

In a fifth aspect, this application provides a computer-readable storage medium storing a computer program, where the computer program causes a computer to execute some or all of the steps described in the method of the first aspect of this application.

In a sixth aspect, embodiments of the present application provide a computer program product, where the computer program product comprises a non-transitory computer-readable storage medium storing a computer program, the computer program being operable to cause a computer to perform some or all of the steps as described in the method of the first aspect of embodiments of the present application. The computer program product may be a software installation package.

In the scheme provided in the embodiment of the present application, when the time domain resource corresponding to the repeated transmission changes, the data transmission device may determine, according to a correspondence between a first TCI state sequence corresponding to the configuration transmission and a first time domain resource corresponding to the actual transmission, a second TCI state sequence corresponding to the first time domain resource, and may further perform data transmission on the first time domain resource according to the second TCI state sequence, so that when the configuration resource of the repeated transmission changes, the data transmission device may determine an adoptable TCI state to perform data transmission, which is beneficial to improving reliability of data transmission.

Drawings

Reference will now be made to the drawings, which are needed for purposes of illustration and description of the embodiments or prior art.

Fig. 1 is an architecture diagram of a communication system according to an embodiment of the present application;

fig. 2a is a schematic diagram of a slot-based repeat transmission according to an embodiment of the present application;

fig. 2b is a schematic diagram of TRP-based repetitive transmission provided in an embodiment of the present application;

fig. 2c is a schematic diagram of a retransmission and TCI state mapping provided in an embodiment of the present application;

fig. 2d is a schematic diagram of another retransmission and TCI state mapping provided in the embodiment of the present application;

fig. 3 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 4 is an interaction diagram of a data transmission method according to an embodiment of the present application;

fig. 5a is a schematic diagram illustrating a correspondence relationship between configuration transmission and actual transmission provided in an embodiment of the present application;

FIG. 5b is a diagram of a configuration transmission and TCI state according to an embodiment of the present application;

FIG. 5c is a diagram of an actual transmission and TCI state according to an embodiment of the present application;

fig. 6a is a schematic diagram of a correspondence relationship between another configuration transmission and actual transmission provided in the embodiment of the present application;

FIG. 6b is a diagram of another actual transmission and TCI state provided in the present application;

fig. 7 is an interaction diagram of another data transmission method provided in the embodiment of the present application;

fig. 8a is a schematic diagram illustrating a correspondence relationship between another configuration transmission and an actual transmission provided in the embodiment of the present application;

FIG. 8b is a diagram of another actual transmission and TCI state provided in the present application;

fig. 9 is an interaction diagram of another data transmission method provided in the embodiment of the present application;

fig. 10a is a schematic diagram illustrating a correspondence relationship between a configuration transmission and an actual transmission provided in an embodiment of the present application;

FIG. 10b is a diagram of another actual transmission and TCI state provided by the embodiment of the present application;

fig. 11 is an interaction diagram of another data transmission method provided in the embodiment of the present application;

fig. 12a is a schematic diagram illustrating a correspondence relationship between a configuration transmission and an actual transmission provided in an embodiment of the present application;

FIG. 12b is a diagram of another actual transmission and TCI state provided by the embodiment of the present application;

fig. 13 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of another data transmission device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

It can be understood that the technical solution of the present application can be applied to the 5th Generation (5G) system or a system called New Radio (NR) system, Long Term Evolution (Long Term Evolution, LTE) system, etc., which are not listed here. In addition, the technical scheme of the application can be specifically applied to data transmission equipment for data transmission, such as data transmission according to the TCI state. Optionally, the data transmission device may be a terminal or a network device.

Fig. 1 is a block diagram of a communication system according to the present invention. As shown in fig. 1, the communication system may include: one or more network devices 101, and one or more terminals 102, only one network device 101 and one terminal 102 being shown in fig. 1 as an example. Data transmission is possible between the network device 101 and the terminal 102. In order to improve the reliability of data transmission, the communication system introduces a repeat transmission technology, i.e. a retransmission technology. The network device 101 and the terminal 102 may transmit data repeatedly, that is, data such as a Physical Downlink Shared Channel (PDSCH) carrying the same data is transmitted for multiple times through different time slots/TRPs/redundancy versions, so as to help obtain diversity gain, reduce false detection probability such as Block Error Rate (BLER), and further improve data transmission reliability.

In a possible design, the repeated transmission may be made in multiple time slots, as shown in fig. 2 a; or may be performed at a plurality of data Transmission devices, such as Transmission/reception points (TRPs), as shown in fig. 2 b. For example, for the multi-slot repetition, multiple PDSCHs carrying the same data corresponding to the repeated transmission may be scheduled to be transmitted on multiple consecutive slots through DCI, or may be transmitted on multiple non-consecutive slots, and the same frequency domain resource may be used for transmission. For another example, for multiple TRP repetitions, PDSCHs carrying the same data may be transmitted on different TRPs respectively, and the data transmission device may employ different transmission parameters, such as different beams (the transmission parameters may be indicated by TCI, e.g., multiple TCI states may be indicated in one DCI at the time, each TCI state being used for one repetition transmission). The repetition of multiple TRPs may also be combined with the multi-slot approach, using non-consecutive slots for transmission, or using consecutive slots for transmission, using different TRPs in different slots, etc. Therefore, the data transmission reliability is improved, and the low-delay and high-reliability characteristics of ultra-reliable and low-delay communication (URLLC) are ensured.

Therefore, in a scenario of repeated transmission, the data transmission device may perform data transmission according to the TCI state corresponding to each repeated transmission, for example, perform data transmission by using the transmission parameter corresponding to the TCI state. For the repeated transmission, there may be a case where the configured transmission resource is changed, for example, there may be an interruption in the repeated transmission, or there may be other cases where the configured transmission resource for the repeated transmission is changed. If the configured transmission resource changes, the data transmission device, such as the terminal and the network device, cannot determine what TCI state should be used for data transmission, which may result in that data cannot be received or sent correctly. For example, uplink and downlink configuration of some systems is flexible, some important system information may exist at some time, which may cause partial interruption of multiple repeat transmissions, as shown in fig. 2c and 2d, a second transmission of 4 repeat transmissions is interrupted by a system message with higher priority, such as an SSB, and resources of the repeat transmissions change. For the situation that the resource of the repeated transmission is changed, such as transmission interruption, there is no explicit TCI mapping manner, so that the data transmission device cannot determine the TCI state corresponding to the actual transmission for data transmission, for example, cannot determine what kind of channel estimation filtering parameter of the TRP corresponding to the TCI state should be used for receiving the normally transmitted data. Therefore, when the time domain resource corresponding to the repeated transmission changes, the second TCI state sequence corresponding to the first time domain resource is determined according to the first TCI state sequence corresponding to the configuration transmission and the actual transmission corresponding to the first time domain resource, and then the data transmission can be performed according to the second TCI state sequence, so that when the configuration resource of the repeated transmission changes, the data transmission can be performed by determining the available TCI state, and the correct TCI state can be used for receiving or sending the data in the discontinuous transmission resource, thereby being beneficial to improving the reliability of the data transmission, being beneficial to ensuring the correct transmission of the URLLC, and achieving the purposes of low time delay and high reliability.

In this application, a network device may be an entity used to send or receive information on a network side, for example, a base station, and the base station may be configured to communicate with one or more terminals, and may also be configured to communicate with one or more base stations having a partial terminal function (for example, communication between a macro base station and a micro base station, such as communication between access points). The Base Station may be a Base Transceiver Station (BTS), an evolved Node B (eNB) in a Long Term Evolution (Long Term Evolution, LTE) system, a Base Station gNB in a 5G system or an NR system, and the like, which are not listed here. Alternatively, the network device 101 may also be a Transmission Point (TP), an Access Point (AP), a transmission Point/reception Point (TRP), a relay device, a Central Unit (CU), or other network devices with a base station function, and the like, which is not limited in this application.

In the present application, a terminal is a device having a communication function, and may be, for example, a vehicle-mounted device, a wearable device, a handheld device (e.g., a smartphone), and the like. The terminal may also be called other names, such as User Equipment (UE), a subscriber Unit (UE), a mobile station (mobile station), a mobile unit (mobile unit), a terminal device, and the like, which is not limited in this application.

In this application, the repeated transmission may include at least one transmission of an uplink transmission, or the repeated transmission may also include at least one transmission of a downlink transmission, which is not limited in this application.

In the present application, the TCI state sequence may include at least one TCI state (hereinafter, may be abbreviated as TCI) arranged in sequence. That is, the TCI state sequence includes at least one TCI state, and the at least one TCI state is arranged in a certain order.

It is to be understood that the communication system shown in fig. 1 is only an example, and does not constitute a limitation to the present application, and as the network architecture evolves and new service scenarios emerge, the technical solutions provided in the present application are also applicable to similar technical problems.

The application discloses a data transmission method and related equipment, wherein the data transmission equipment can determine the adopted TCI to carry out data transmission when the configuration resources for repeated transmission change, and the data transmission equipment is favorable for improving the reliability of data transmission. The following detailed description is made with reference to the accompanying drawings.

Referring to fig. 3, fig. 3 is a schematic flowchart of a data transmission method according to an embodiment of the present application. The method of this embodiment may be specifically applied to the data transmission device, where the data transmission device may be a terminal or a network device. As shown in fig. 3, the data transmission method may include:

301. a first TCI state sequence for repeated transmission of data is determined.

Wherein, the first TCI state sequence may include at least one TCI state, and each transmission of the repeated transmission is associated with one TCI state in the first TCI state sequence, that is, each transmission of the repeated transmission corresponds to a TCI state at a corresponding position in the first TCI state sequence. For example, the first transmission (initial transmission, first transmission) of the retransmission is associated with the first TCI state of the first TCI state sequence, the second transmission of the retransmission is associated with the second TCI state of the first TCI state sequence, and so on, i.e., the nth transmission of the retransmission is associated with the nth TCI state of the first TCI state sequence. The association between the nth transmission and the nth TCI state of the repeated transmission may refer to performing data transmission according to the nth TCI state when performing the nth transmission, for example, receiving data according to a receiving parameter corresponding to the nth TCI state, or sending data according to a sending parameter corresponding to the nth TCI state, or the like.

The first TCI state sequence may refer to a TCI state sequence corresponding to the repeatedly transmitted configuration transmission, or a TCI state sequence corresponding to the repeatedly transmitted configuration transmission resource, that is, the second time domain resource. Optionally, the first TCI state sequence may be determined according to the TCI configuration information, or may be configured by the network device, or may be pre-stored, or may also be determined by other means.

In one possible design, the data transmission device may obtain the TCI configuration information, and when determining the first TCI state sequence, determine the first TCI state sequence according to the TCI configuration information. Wherein the TCI configuration information may be used to indicate at least one TCI state or may be used to indicate the first TCI state sequence. Optionally, the TCI configuration information may include one or more TCI indexes, and/or a plurality of TCI states and a configuration order of the plurality of TCI states, and/or a group index of a CORESET to which one or more TCI states belong, and so on, so that the data transmission device may determine, in combination with these information, the TCI state indicated by the TCI configuration information, determine an order of the TCI states indicated by the TCI configuration information, determine the first TCI state sequence, and so on. Further optionally, the TCI configuration information may include a configuration transmission number of the repeated transmission. For example, the TCI configuration information may be used to indicate at least one TCI state, or to indicate at least one TCI state, and the data transmission device may determine the first TCI state sequence according to a configured transmission number (retransmission number) of repeated transmissions and the TCI configuration information; for another example, the TCI configuration information may be used to indicate the first TCI state sequence, such as directly carrying the first TCI state sequence, or may include indexes (TCI index or group index, etc.) and orders corresponding to TCIs of the first TCI state sequence, so that the data transmission apparatus determines the first TCI state sequence according to the indexes and orders.

If the data transmission device is a terminal, the network device may send TCI configuration information to the terminal, and the terminal may receive the TCI configuration information from the network device. Optionally, the TCI configuration information may be further configured to indicate an order of the at least one TCI state, so that the data transmission device may determine, according to the order, an order of the TCI states included in the first TCI state sequence; alternatively, the data transmission device may determine the order of the TCI states included in the first TCI state sequence by other means, such as randomly determining the order of the at least one TCI state, determining the order according to the index of the at least one TCI state, determining the order according to the group index of the control resource set CORESET to which the at least one TCI state belongs, and the like, which is not limited in this application. The configuration transmission number may be carried in the TCI configuration information, may also be carried in other information, and is sent to the terminal through other information, or may be determined by the terminal through other manners.

For example, when determining the first TCI state sequence, the data transmission device may sequentially poll at least one TCI state indicated by the TCI configuration information according to the retransmission times to obtain the first TCI state sequence. For example, based on the first TCI state (hereinafter referred to as the first TCI) in the first TCI configuration information for the 1 st, j +1 st, 2j +1 st transmission, the second TCI state (hereinafter referred to as the second TCI) for the 2 nd, j +2 nd, 2j +2 nd transmission, the third TCI state (hereinafter referred to as the third TCI) for the 3 rd, j +3 rd, 2j +3 rd transmission, and so on. For example, the number of retransmissions is 4, the TCI configuration information indicates the first TCI and the second TCI, and after polling the first TCI and the second TCI, the obtained first TCI state sequence may be the first TCI, the second TCI, the first TCI, and the second TCI, that is, the first TCI is used for the 1 st transmission and the 3 rd transmission, and the second TCI is used for the 2 nd transmission and the 4 th transmission. As another example, the number of retransmissions is 6, the TCI configuration information indicates the first TCI and the second TCI, and the first TCI state sequence may be the first TCI, the second TCI, the first TCI, and the second TCI, that is, the first TCI is used for the 1 st, the 3 rd, and the 5th transmissions, and the second TCI is used for the 2 nd, the 4 th, and the 6 th transmissions. As another example, the number of retransmissions is 6, the TCI configuration information indicates the first TCI, the second TCI, and the third TCI, and the first TCI state sequence may be the first TCI, the second TCI, the third TCI, the first TCI, the second TCI, and the third TCI, that is, the first TCI is used for the 1 st and 4 th transmissions, the second TCI is used for the 2 nd and 5th transmissions, the third TCI is used for the 3 rd and 6 th transmissions, and so on, which are not listed here.

For example, when determining the first TCI state sequence, the data transmission device may further determine, according to the retransmission times, the number of each of the at least one type of TCI state in the first TCI state sequence, and further determine the first TCI state sequence according to the number of each type of TCI state. Such as may be based on a first TCI in the first TCI configuration information for transmissions 1 through k, a second TCI for transmissions k +1 through 2k, a third TCI for transmissions 2k +1 through 3k, and so on. For example, the number of retransmissions is 4, the TCI configuration information indicates a first TCI and a second TCI, and the obtained first TCI state sequence may be the first TCI, the second TCI, and the second TCI, that is, the first TCI is used for the 1 st transmission and the 2 nd transmission, and the second TCI is used for the 3 rd transmission and the 4 th transmission. For another example, the number of retransmissions is 5, the TCI configuration information indicates a first TCI and a second TCI, and the first TCI state sequence may be the first TCI, the second TCI, and the second TCI, that is, the first TCI is used for the 1 st to 3 rd transmissions, and the second TCI is used for the 4 th to 5th transmissions. As another example, the number of retransmissions is 6, the TCI configuration information indicates a first TCI, a second TCI, and a third TCI, and the first TCI state sequence may be the first TCI, the second TCI, the third TCI, and the third TCI, i.e., the first TCI is used for the 1 st to 2 nd transmissions, the second TCI is used for the 3 rd to 4 th transmissions, and the third TCI is used for the 5th to 6 th transmissions, etc., which are not enumerated herein.

302. And when the time domain resource corresponding to the repeated transmission is changed, determining a second TCI state sequence corresponding to the first time domain resource according to the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource.

The first time domain resource is a time domain resource corresponding to the changed repeated transmission, and the second TCI state sequence may include at least one TCI state. The data transmission device determining that the second TCI state sequence corresponding to the first time domain resource may refer to: the TCI state corresponding to each transmission (each repeated transmission) in the first time domain resource is determined respectively, or the TCI state corresponding to the time domain resource corresponding to each repeated transmission in the first time domain resource is determined respectively, that is, the TCI state corresponding to each actual transmission of the repeated transmission is determined. That is to say, the data transmission device can determine the TCI configuration of each actual transmission of the repeated transmission, that is, the second TCI state sequence, according to the mapping relationship between each actual transmission corresponding to the repeated transmission and the TCI state in the first TCI state sequence.

In a possible design, the change of the second time domain resource corresponding to the repeated transmission may refer to a change of a part of resources (e.g., resources corresponding to a certain configuration transmission or a certain number of configuration transmissions) of the second time domain resource, or may refer to a change of all resources of the second time domain resource; it may also be referred to as configuration transfer being interrupted, configuration transfer resources being occupied, and so on. Optionally, the change may be caused by a plurality of conditions, for example, a certain configuration transmission is interrupted, for example, by system information with a higher priority, to cause the change, or a configuration transmission resource corresponding to the certain configuration transmission is occupied, for example, by system information with a higher priority, or a time domain resource of the repeated transmission is actively adjusted, or other conditions that the transmission resource is changed, which is not limited in the present application.

In one possible design, the data transmission device may determine, according to the first TCI state sequence and the target information, a correspondence relationship between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource. The target information may be used to indicate an actually used transmission resource, or may be used to indicate a location of each transmission corresponding to the first time domain resource, and the data transmission device may determine each transmission corresponding to the first time domain resource according to the target information. Optionally, the target information includes any one or more of the following: the location information of the first time domain resource includes, for example, location information of each transmission corresponding to the first time domain resource, transmission times corresponding to the first time domain resource, location information of a time domain resource (assumed to be a third time domain resource) corresponding to a first transmission in a second time domain resource, configuration transmission times of the repeated transmission, and location information of a changed time domain resource; the second time domain resource is the time domain resource corresponding to the repeated transmission before the time domain resource changes, and the transmission times corresponding to the first time domain resource are less than or equal to the configuration transmission times of the repeated transmission. Optionally, the third time domain resource may be a directly configured or indirectly configured time domain resource. The location information may include any one or more of a starting location, a length, an ending location of the resource, such as including the starting location and the length, as well as the starting location and the ending location, and so forth. If the data transmission device is a terminal, the target information may be sent to the terminal by the network device, or may be determined by the terminal through other means.

In this application, the transmission times corresponding to the first time domain resource may be transmission times corresponding to actual transmission, or may be referred to as transmission times after the time domain resource is changed, which may also be referred to as actual transmission times, actual retransmission times, and the like. The configured transmission times of the repeated transmission are transmission times corresponding to the configured transmission, or referred to as transmission times corresponding to the second time domain resource, or may be referred to as transmission times before the time domain resource changes, and the like, which may also be referred to as transmission times of the repeated transmission, configured retransmission times, initial retransmission times, and the like.

In a possible design, when determining the correspondence, the data transmission device may determine, according to a polling result of each transmission corresponding to the first TCI state sequence in the first time domain resource, a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource, and further may determine the second TCI state sequence according to the correspondence. That is, the data transmission device may poll the first TCI state sequence on each actual transmission of the repeated transmission, mapping the respective transmissions of the second time domain resource directly according to the first TCI state sequence. Wherein, the TCI state corresponding to each transmission corresponding to the second time domain resource and the TCI state corresponding to each transmission corresponding to the first time domain resource are both associated with the number of the transmission. The second TCI state sequence may be the same as the first TCI state sequence, or the second TCI state sequence may include a portion of the first TCI state sequence, such as a TCI state sequence composed of the first i TCI states in the first TCI state sequence, i may be the same as the transmission number corresponding to the first time domain resource.

For example, optionally, when determining the corresponding relationship, the data transmission device may determine, according to a polling result of each transmission of the first TCI state sequence in the first time domain resource, a corresponding relationship between a TCI state in the first TCI state sequence and each transmission of the first time domain resource when there is no repeat transmission corresponding to the data after the second time domain resource. That is, the data transmission device may poll on each actual transmission of the repeated transmissions according to the first TCI state sequence to determine the second TCI state sequence when actual transmissions no longer occur after configuring the corresponding resource location for transmission.

In a possible design, when determining the corresponding relationship, the data transmission device may determine, according to a polling result of transmission of the first TCI state sequence in the second time domain resource, the corresponding relationship between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource. That is to say, the data transmission device may further poll the first TCI state sequence on the configuration transmission of the repeated transmission, and map each transmission of the first time domain resource according to the first TCI state sequence, that is, determine a mapping relationship between the first TCI state sequence and each transmission of the first time domain resource according to a mapping relationship between the first TCI state sequence and the configuration transmission of the repeated transmission, such as a partial configuration transmission. The second TCI state sequence may be different from the first TCI state sequence. The partial transmission is repeated transmission corresponding to the unchanged time domain resource in the second time domain resource, and the time domain resource corresponding to the partial transmission corresponds to the position of the first time domain resource.

For example, optionally, when determining the correspondence relationship, the data transmission device may determine, according to a polling result transmitted by the first TCI state sequence in the portion corresponding to the second time domain resource when there is no repeated transmission corresponding to the data after the second time domain resource, a correspondence relationship between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource. That is, when data, such as PDSCH, is not actually transmitted any more after all configured transmission resources of the repeated transmission, the first TCI state sequence may poll on a partial configuration transmission of the repeated transmission, i.e., a configuration transmission other than the configuration transmission in which the time domain resources are changed in the configuration transmission, where the polled partial transmission and the actual transmission are in one-to-one correspondence with each other in the position of the time domain resources.

As another example, optionally, if the time domain resource of the nth transmission in the second time domain resource changes, the nth transmission may be transmitted after the second time domain resource, and the TCI state corresponding to the nth transmission may remain unchanged. Further, when determining the corresponding relationship, the data transmission device may determine, according to the polling result of the partial transmission of the first TCI state sequence in the second time domain resource and the TCI state corresponding to the nth transmission, a corresponding relationship between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource. That is, if the nth configuration transmission (the nth transmission corresponding to the number of configuration transmissions) of the configuration transmissions is aborted and transmitted after all configuration transmission resources of the repeated transmission, the first TCI state sequence may be polled on the portion of the configuration transmission that is repeatedly transmitted to obtain the second TCI state sequence. The actual transmission number and time domain resource corresponding to the nth configuration transmission are changed, but the TCI configuration is kept unchanged.

As another example, optionally, if the time domain resource of the nth transmission in the second time domain resource changes, the nth transmission may be transmitted after the second time domain resource. Further, when determining the corresponding relationship, the data transmission device may determine, according to a polling result of the first TCI state sequence in the part corresponding to the second time domain resource and a polling result of the first TCI state sequence in the transmission set, a corresponding relationship between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource. Wherein the transmission set includes repeated transmissions corresponding to the data after the second time domain resource, and the transmission set includes the nth transmission. That is, if an nth configuration transmission is aborted and the nth configuration transmission is transmitted after all configured transmission resources of the duplicate transmission, a supplemental transmission is a transmission set after all configured transmission resources of the duplicate transmission, a first TCI state sequence may be polled on the transmission set, and the first TCI state sequence is polled on a partial configuration transmission of the duplicate transmission to obtain a second TCI state sequence.

303. And according to the second TCI state sequence, performing repeated transmission of the data on the first time domain resource.

After determining the second TCI state sequence corresponding to the first time domain resource, that is, the actual transmission resource, the data may be repeatedly transmitted on the first time domain resource according to the second TCI state sequence, that is, according to the TCI state corresponding to each transmission corresponding to the first time domain resource, data transmission, including data transmission or reception, is performed on the time domain resource corresponding to the transmission (that is, the actual transmission resource of the transmission). For example, the terminal may transmit data on the first time domain resource according to the second TCI state sequence, and/or the network device may receive data on the first time domain resource according to the second TCI state sequence; alternatively, the network device may transmit data on the first time domain resource according to the second TCI state sequence, and/or the terminal may receive data on the first time domain resource according to the second TCI state sequence.

In one possible design, the repeatedly transmitted information is obtained through a Physical Downlink Control Channel (PDCCH) dynamic configuration, or through a high layer signaling semi-static configuration. For example, when the data transmission device is a terminal, the network device may send a PDCCH carrying the repeatedly transmitted information to the terminal, and the terminal may receive the PDCCH; also, for example, the network device may send a higher layer signaling carrying the repeatedly transmitted information to the terminal, and the terminal may receive the higher layer signaling. Optionally, the information of the repeated transmission includes a configured transmission number of the repeated transmission and/or location information of the first time domain resource and/or location information of the second time domain resource. The location information of the first time domain resource may indicate location information of each transmission corresponding to the first time domain resource and/or location information of a time domain resource that changes with respect to the second time domain resource, and the like, and the location information of the second time domain resource may indicate location information of each transmission corresponding to the second time domain resource, location information of a first transmission corresponding to the second time domain resource and/or location information of a changed time domain resource, and the like.

In one possible design, the configured transmission number of the repeated transmission may be configured by Downlink Control Information (DCI), for example, the network device may send the DCI carrying the configured transmission number to the terminal, and the terminal may receive the DCI. Optionally, the configured transmission number of the repeated transmission may be indicated by a time domain resource indication field of the DCI. Optionally, the location information of the first time domain resource and/or the location information of the second time domain resource, etc. may also be carried in the DCI.

In one possible design, the configuration transmission number of the repeated transmission may be obtained according to the TCI information, for example, the network device may send the TCI information carrying the configuration transmission number to the terminal, and the terminal may receive the TCI information. Optionally, the location information of the first time domain resource and/or the location information of the second time domain resource may also be carried in the TCI information.

In a possible design, the time domain resource corresponding to the repeated transmission, that is, the first time domain resource or the second time domain resource, may be in one time slot, may also span the time slot, or may be on multiple time slots, which is not limited in this application.

In one possible design, the TCI may include a quasi co-location (QCL), and the data transmission device may determine a beam for data transmission according to an indication of the QCL, for example, the network device may notify the terminal of a receiving beam for data transmission according to the indication of the QCL, and the network device may determine a transmitting beam according to the QCL, and the like. Alternatively, QCL may be indicated by: the indication is performed through RRC configuration, or can be configured through RRC and activated by MAC-CE and indicated by using DCI. For the indication mode based on the MAC-CE, a group of TCI states can be configured by a higher layer, and a corresponding QCL reference can be determined according to each TCI state. For the DCI-based indication mode, the acquisition of QCL information may go through three steps of RRC configuration, MAC-CE activation, and DCI indication. For example, taking a data transmission device as an example, for repeated transmission of multiple TRPs, due to the spatial position difference of different TRPs, the difference of large-scale channel parameters on a receiving link may be caused, the terminal may use different receiving parameters such as channel estimation filtering parameters when receiving data from different TRPs, and in order to simplify the adjustment of the channel estimation filtering parameters by the terminal each time the terminal receives data, the network device may notify the terminal of a receiving beam when receiving data through the indication of the QCL, so as to improve the reliability of data transmission.

In a possible design, after determining the second TCI state sequence, the data transmission device may further send the second TCI state sequence to a corresponding device for data transmission, for example, when the data transmission device is a terminal, the second TCI state sequence may be sent to a network device for data transmission, and when the data transmission device is a network device, the second TCI state sequence may be sent to the terminal for data transmission, which helps to save overhead of the system for determining the actual transmission of the corresponding TCI.

In other optional embodiments, the data transmission device may further determine only the TCI state corresponding to the actual transmission resource corresponding to the changed retransmission and the TCI state corresponding to the other configured transmission resource after the configured transmission resource corresponding to the changed retransmission, and the repeated transmission before the fourth time domain resource may still perform data transmission with the TCI state corresponding to the first TCI state sequence, so as to improve the data transmission efficiency.

In this embodiment, when the time domain resource corresponding to the repeated transmission changes, the data transmission device may determine, according to a correspondence between a first TCI state sequence corresponding to the configuration transmission and a first time domain resource corresponding to the actual transmission, a second TCI state sequence corresponding to the first time domain resource, and further perform data transmission on the first time domain resource according to the second TCI state sequence, so that when the configuration resource of the repeated transmission changes, it may be determined that a TCI state that the data transmission device may use is used to perform data transmission, which is beneficial to improving reliability of data transmission.

Referring to fig. 4, fig. 4 is an interaction diagram of a data transmission method according to an embodiment of the present application. The method of this embodiment may be specifically applied to the data transmission device, where the data transmission device may be a terminal or a network device. In this embodiment, the data transmission device may transmit a corresponding first TCI state sequence to poll on each actual transmission of the repeated transmission based on the configuration of the repeated transmission to determine a corresponding second TCI state sequence for the actual transmission. As shown in fig. 4, the data transmission method may include:

401. the network device sends the TCI configuration information to the terminal.

402. And the terminal determines the first TCI state sequence according to the TCI configuration information.

The TCI configuration information may be used to indicate at least one TCI state, or may be used to indicate the first TCI state sequence, which is not described herein again. For example, the TCI configuration information indicates TCI0 and TCI1, the number of configured transmission times is 4, and it is assumed that the first TCI state sequence determined by the terminal is { TCI0, TCI1, TCI0, TCI1 }.

Optionally, the terminal may also determine the first TCI state sequence in other manners, and the description of the step 401 and the step 402 may refer to the related description of the step 301 in the embodiment shown in fig. 3, which is not described herein again.

403. When the time domain resource corresponding to the repeated transmission changes, the terminal determines the corresponding relationship between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to the polling result of each transmission corresponding to the first TCI state sequence in the first time domain resource.

404. And the terminal determines a second TCI state sequence corresponding to the first time domain resource according to the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource.

When the time domain resource corresponding to the repeated transmission is changed, the terminal may associate (correspond, map) the TCI state in the first TCI state sequence with each transmission corresponding to the first time domain resource in sequence according to the polling result of each transmission corresponding to the first TCI state sequence in the first time domain resource, to determine the TCI state corresponding to each transmission corresponding to the first time domain resource, that is, determine the second TCI state sequence corresponding to the first time domain resource, where the TCI state of each transmission corresponding to the repeated transmission corresponds to the transmission number of times of the repeated transmission. If the terminal determines to configure the transmission resource according to the configuration of the network side, that is, the second transmission of the second time domain resource conflicts with the system information, and the configured second transmission does not perform actual data transmission such as PDSCH transmission, the terminal may determine the TCI state corresponding to the actual transmission according to the TCI state corresponding to the configured transmission.

If there is actual transmission corresponding to the repeated transmission after the second time domain resource, that is, after all the configured transmission resources, as shown in fig. 5a, the actual transmission times corresponding to the repeated transmission are the same as the configured transmission times, and the TCI state of the a-th transmission in the configured transmission is the same as the TCI state of the a-th transmission in the actual transmission, the terminal may directly map the TCI state corresponding to the actual transmission according to the TCI state corresponding to the configured transmission. The arrows in fig. 5a may be used to indicate TCI correspondence. In this example, the TCI state corresponding to the configuration transmission may be as shown in fig. 5b, and the corresponding first TCI state sequence is { TCI0, TCI1, TCI0, TCI1 }; the TCI state corresponding to the actual transmission may be as shown in fig. 5c, and the corresponding second TCI state sequence is { TCI0, TCI1, TCI0, TCI1 }.

If there is no actual transmission corresponding to the repeated transmission after the second time domain resource, that is, after all the configured transmission resources exist (no longer occur), as shown in fig. 6a, the actual transmission times corresponding to the repeated transmission is less than the configured transmission times, the TCI state of the a-th transmission in the configured transmission is the same as the TCI state of the a-th transmission in the actual transmission, and the terminal may determine the TCI state corresponding to the actual transmission according to the TCI state corresponding to the configured transmission. In this example, the TCI state corresponding to the configuration transmission may be as shown in fig. 5b, and the corresponding first TCI state sequence is { TCI0, TCI1, TCI0, TCI1 }; the actual transmission corresponds to the TCI state shown in fig. 6b, and the corresponding second TCI state sequence is { TCI0, TCI1, TCI0 }.

405. And the terminal performs repeated transmission of the data on the first time domain resource according to the second TCI state sequence.

The description of step 405 may refer to the description related to step 303 in the embodiment shown in fig. 3, which is not repeated herein.

After determining the second TCI state sequence, the terminal may perform data transmission in the first time domain resource based on the second TCI state sequence. Optionally, the network device may also determine actual transmission corresponding to the repeated transmission, that is, a TCI state corresponding to the first time domain resource, based on the foregoing manner, such as the foregoing second TCI state sequence, and further may perform data transmission on the first time domain resource based on the second TCI state sequence. For example, the terminal may transmit data at the first time domain resource based on the second TCI state sequence, and the network device may receive data from the terminal at the first time domain resource based on the second TCI state sequence; also, for example, the network device can send data at the first time domain resource based on the second TCI state sequence, the terminal can receive data from the network device at the first time domain resource based on the second TCI state sequence, and so on. Or, optionally, after determining the second TCI state sequence, the terminal may send the second TCI state sequence to the network device for data transmission, so as to help save overhead of determining, by the system, the TCI state corresponding to actual transmission, which is not described herein.

In this embodiment, when the time domain resource corresponding to the repetitive transmission changes, the terminal can poll each actual transmission of the repetitive transmission based on the first TCI state sequence to obtain the TCI state information adopted during the actual transmission, and then can perform data transmission on the actual transmission resource according to the TCI state adopted during the actual transmission, so that when the configuration resource of the repetitive transmission changes, the TCI state that can be adopted by the data transmission device is determined to perform data transmission, which is beneficial to improving the reliability of the data transmission.

Referring to fig. 7, fig. 7 is an interaction diagram of another data transmission method according to an embodiment of the present application. In this embodiment, there is no actual transmission corresponding to the repeated transmission after all the configured transmission resources, and the data transmission device may poll on the configured transmission of the repeated transmission based on the first TCI state sequence corresponding to the configured transmission of the repeated transmission to determine the second TCI state sequence corresponding to the actual transmission for data transmission. As shown in fig. 7, the data transmission method may include:

701. the network device sends the TCI configuration information to the terminal.

702. And the terminal determines the first TCI state sequence according to the TCI configuration information.

The TCI configuration information may be used to indicate at least one TCI state, or may be used to indicate the first TCI state sequence, which is not described herein again. For example, the TCI configuration information indicates TCI0 and TCI1, the number of configured transmission times is 4, and the first TCI state sequence determined by the terminal is { TCI0, TCI1, TCI0, TCI1 }.

Optionally, the terminal may also determine the first TCI state sequence in other manners, and the description of step 701-702 may refer to the related description of the foregoing embodiments, which is not repeated herein.

703. When the second time domain resource corresponding to the repeated transmission changes and there is no repeated transmission corresponding to the data after the second time domain resource, the terminal determines the corresponding relationship between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to the polling result of the first TCI state sequence transmitted in the part corresponding to the second time domain resource.

704. And the terminal determines a second TCI state sequence corresponding to the first time domain resource according to the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource.

The partial transmission is repeated transmission corresponding to the unchanged time domain resource in the second time domain resource, and the time domain resource corresponding to the partial transmission corresponds to the position of the first time domain resource. As shown in fig. 8a, when data, such as PDSCH, is not actually transmitted any more after all configured transmission resources of the repeated transmission, the first TCI state sequence may poll on the partially configured transmission of the repeated transmission, where the polled partial transmission and the actual transmission are in one-to-one correspondence with each other in the position of the time domain resources. In this example, the TCI state corresponding to the configuration transmission may be as shown in fig. 5b, and the corresponding first TCI state sequence is { TCI0, TCI1, TCI0, TCI1 }; the actual transmission corresponds to the TCI state shown in fig. 8b, and the corresponding second TCI state sequence is { TCI0, TCI1 }.

705. And the terminal performs repeated transmission of the data on the first time domain resource according to the second TCI state sequence.

The description of step 705 may refer to the related description of the above embodiments, and is not repeated herein.

After determining the second TCI state sequence, the terminal may perform data transmission in the first time domain resource based on the second TCI state sequence. Optionally, the network device may also determine actual transmission corresponding to the repeated transmission, that is, a second TCI state sequence corresponding to the first time domain resource based on the foregoing manner, and further may perform data transmission on the first time domain resource based on the second TCI state sequence. Or, optionally, after determining the second TCI state sequence, the terminal may send the second TCI state sequence to the network device for data transmission, which is not described herein again.

In this embodiment, when the time domain resource corresponding to the repeated transmission changes and there is no actual transmission corresponding to the repeated transmission after all the configured transmission resources, the terminal polls the partial configured transmission of the repeated transmission based on the first TCI state sequence to obtain the TCI state information adopted during the actual transmission, and further performs data transmission on the actual transmission resources according to the TCI state adopted during the actual transmission, so that when the configured resource of the repeated transmission changes, the TCI state that can be adopted by the data transmission device is determined to perform data transmission, which is beneficial to improving the reliability of the data transmission.

Referring to fig. 9, fig. 9 is an interaction diagram of another data transmission method according to an embodiment of the present application. In this embodiment, after all the configured transmission resources, there is an actual transmission corresponding to the repeated transmission, and the data transmission device may determine, based on a first TCI state sequence corresponding to the configured transmission of the repeated transmission, to poll on the configured transmission of the repeated transmission, and a TCI state corresponding to the nth transmission that changes in the first TCI state sequence, a second TCI state sequence corresponding to the actual transmission, so as to perform data transmission. As shown in fig. 9, the data transmission method may include:

901. the network device sends the TCI configuration information to the terminal.

902. And the terminal determines the first TCI state sequence according to the TCI configuration information.

Optionally, the terminal may also determine the first TCI state sequence in other manners, and the description of the step 901 and 902 may refer to the related description of the foregoing embodiments, which is not described herein again.

903. And when the time domain resource of the nth transmission corresponding to the second time domain resource changes, determining to transmit the nth transmission after the second time domain resource, wherein the TCI state corresponding to the nth transmission remains unchanged.

In this embodiment, actual transmission corresponding to repeated transmission exists after all configured transmission resources corresponding to the repeated transmission, that is, the first time domain resource includes time domain resources corresponding to the nth transmission after all configured transmission resources. As shown in fig. 10a, in this embodiment, n is 2, the TCI state of the second transmission (the second configuration transmission) corresponding to the configuration transmission is TCI1, and the second transmission corresponding to the configuration transmission corresponds to the fourth transmission of the actual transmission, so that the TCI state corresponding to the fourth transmission of the actual transmission is TCI 1. That is, the actual number of transmissions and time domain resources corresponding to the nth configuration transmission are changed, but the TCI configuration thereof remains unchanged.

904. And the terminal determines the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to the polling result transmitted by the first TCI state sequence in the part corresponding to the second time domain resource and the TCI state corresponding to the nth transmission.

905. And the terminal determines a second TCI state sequence corresponding to the first time domain resource according to the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource.

The partial transmission is repeated transmission corresponding to the unchanged time domain resource in the second time domain resource, and the time domain resource corresponding to the partial transmission corresponds to the position of the first time domain resource. As shown in fig. 10a, when data, such as PDSCH, is actually transmitted after all configured transmission resources of the repeated transmission, the first TCI state sequence may poll on the partially configured transmission of the repeated transmission, the TCI states corresponding to the first three transmissions of the actual transmission are TCI0, and TCI1, the positions of the polled partial transmission and the actual transmission in the time domain resources are in one-to-one correspondence, and the second TCI state sequence may be determined by combining the TCI state, that is, the TCI1, corresponding to the second transmission in which the time domain resources are changed. In this example, the TCI state corresponding to the configuration transmission may be as shown in fig. 5b, and the corresponding first TCI state sequence is { TCI0, TCI1, TCI0, TCI1 }; the TCI state corresponding to the actual transmission can be as shown in fig. 10b, and the corresponding second TCI state sequence is { TCI0, TCI1 }.

906. And the terminal performs repeated transmission of the data on the first time domain resource according to the second TCI state sequence.

The description of step 906 may refer to the related description of the above embodiments, and is not repeated herein.

In this embodiment, when the time domain resource corresponding to the repeated transmission changes and actual transmission corresponding to the repeated transmission exists after all the configured transmission resources, the terminal may poll on part of the configured transmission of the repeated transmission based on the first TCI state sequence and transmit the TCI state corresponding to the changed nth transmission in the first TCI state sequence, obtain the TCI state information used in the actual transmission, and may perform data transmission on the actual transmission resources according to the TCI used in the actual transmission, thereby determining the TCI state that can be used by the data transmission device to perform data transmission when the configured resource of the repeated transmission changes, and contributing to improving reliability of the data transmission.

Referring to fig. 11, fig. 11 is an interaction diagram of another data transmission method according to an embodiment of the present application. In this embodiment, there is actual transmission corresponding to the repeated transmission after all the configured transmission resources, and the data transmission device may poll on the configured transmission of the repeated transmission a first TCI state sequence corresponding to the configured transmission of the repeated transmission, and poll on the transmission set (which may include repeated transmission after all the configured transmission resources) based on the first TCI state sequence to determine a second TCI state sequence corresponding to the actual transmission for data transmission. As shown in fig. 11, the data transmission method may include:

1101. the network device sends the TCI configuration information to the terminal.

1102. And the terminal determines the first TCI state sequence according to the TCI configuration information.

Optionally, the terminal may also determine the first TCI state sequence in other manners, and the description of the step 1101-1102 may refer to the related description of the foregoing embodiments, which is not repeated herein.

1103. And when the time domain resource of the nth transmission corresponding to the second time domain resource changes, determining to transmit the nth transmission after the second time domain resource.

In this embodiment, actual transmission corresponding to the repeated transmission exists after all the configured transmission resources corresponding to the repeated transmission, that is, the first time domain resource includes the time domain resource corresponding to the nth transmission after all the configured transmission resources, and the repeated transmission is performed according to the change of the time domain resource to obtain a transmission set, where the transmission set includes the repeated transmission corresponding to the data after the second time domain resource. As shown in fig. 12a, in the present embodiment, n is 2, and the transmission set includes the second transmission.

1104. And the terminal determines the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to the polling result of the first TCI state sequence transmitted in the part corresponding to the second time domain resource and the polling result of the first TCI state sequence in the transmission set.

1105. And the terminal determines a second TCI state sequence corresponding to the first time domain resource according to the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource.

The partial transmission is repeated transmission corresponding to the unchanged time domain resource in the second time domain resource, and the time domain resource corresponding to the partial transmission corresponds to the position of the first time domain resource. As shown in fig. 12a, when data, such as PDSCH, is actually transmitted after all configured transmission resources of the repeated transmission, the first TCI state sequence may poll on the partially configured transmission of the repeated transmission, the TCI states corresponding to the first three transmissions of the actual transmission are TCI0, and TCI1, the positions of the polled partial transmissions and the positions of the actual transmissions in the time domain resources are in one-to-one correspondence, and in combination with the polling of the first TCI state sequence in the transmission set, the TCI state corresponding to the second transmission included in the set, that is, the first TCI, TCI0 of the first TCI state sequence, is obtained to determine the second TCI state sequence. In this example, the TCI state corresponding to the configuration transmission may be as shown in fig. 5b, and the corresponding first TCI state sequence is { TCI0, TCI1, TCI0, TCI1 }; the TCI state corresponding to the actual transmission can be as shown in fig. 12b, and the corresponding second TCI state sequence is { TCI0, TCI1, TCI0 }.

1106. And the terminal performs repeated transmission of the data on the first time domain resource according to the second TCI state sequence.

The description of step 1106 can refer to the related description of the above embodiments, and is not repeated herein.

In this embodiment, when the time domain resource corresponding to the repeated transmission changes and actual transmission corresponding to the repeated transmission exists after all the configured transmission resources, the terminal can poll on part of the configured transmission of the repeated transmission based on the first TCI state sequence and poll on the nth transmission that changes based on the first TCI state sequence to obtain the TCI state information adopted during the actual transmission, and then can perform data transmission on the actual transmission resources according to the TCI state adopted during the actual transmission, thereby determining the TCI state that can be adopted by the data transmission device to perform data transmission when the configured resource of the repeated transmission changes, and contributing to improving reliability of the data transmission.

It is to be understood that the foregoing method embodiments are all illustrations of data transmission methods in the present application, and descriptions of various embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment.

Fig. 13 is a schematic structural diagram of a data transmission device according to an embodiment of the present application. The data transmission device may be a terminal or a network device. As shown in fig. 13, the data transmission apparatus 1300 may include: a processor 1310, a memory 1320, a communications interface 1330, and one or more programs 1321, wherein the one or more programs 1321 are stored in the memory 1320 and configured to be executed by the processor 1310, the programs comprising instructions for:

the data is repeatedly transmitted over the first time domain resource according to the second TCI state sequence through the communication interface 1330, wherein each time transmission, the TCI state corresponding to the transmission in the second TCI state sequence is used.

In one possible design, the instructions in the program are further to perform the following operations:

determining a corresponding relation between each transmission corresponding to a TCI state in the first TCI state sequence and a first time domain resource according to the first TCI state sequence and target information, wherein the target information is used for indicating a position of each transmission corresponding to the first time domain resource;

wherein the target information comprises any one or more of:

the position information of the first time domain resource, the transmission times corresponding to the first time domain resource, the position information of the time domain resource corresponding to the first transmission in the second time domain resource, and the configuration transmission times of the repeated transmission; the second time domain resource is corresponding to repeated transmission before the time domain resource changes, and the transmission times corresponding to the first time domain resource are less than or equal to the configuration transmission times.

determining a corresponding relation between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to a polling result of each transmission corresponding to the first time domain resource of the first TCI state sequence;

the TCI state corresponding to each transmission corresponding to the second time domain resource and the TCI state corresponding to each transmission corresponding to the first time domain resource are both associated with the number of the transmission, and the second time domain resource is a time domain resource corresponding to repeated transmission before the time domain resource changes.

In one possible design, when the determining a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource is performed according to the polling result of each transmission corresponding to the first TCI state sequence at the first time domain resource, the instructions in the program are further configured to:

when repeated transmission corresponding to the data does not exist after the second time domain resource, determining the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to the polling result of each transmission corresponding to the first TCI state sequence in the first time domain resource.

determining a corresponding relation between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to a polling result transmitted by the first TCI state sequence in a part corresponding to the second time domain resource;

the second time domain resource is corresponding to the repeated transmission before the time domain resource changes, the partial transmission is corresponding to the time domain resource which does not change in the second time domain resource, and the position of the time domain resource corresponding to the partial transmission corresponds to the position of the first time domain resource.

In one possible design, when determining a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to the polling result transmitted by the first TCI state sequence in the portion corresponding to the second time domain resource, the instructions in the program are further configured to:

when repeated transmission corresponding to the data does not exist after all the second time domain resources, determining the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resources according to the polling result of the first TCI state sequence transmitted in the part corresponding to the second time domain resources.

In one possible design, if the time domain resource of the nth transmission corresponding to the second time domain resource changes, the nth transmission being transmitted after the second time domain resource, the TCI state corresponding to the nth transmission remains unchanged;

when the corresponding relationship between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource is determined according to the polling result transmitted by the first TCI state sequence in the portion corresponding to the second time domain resource, the instructions in the program are further configured to perform the following operations:

and determining the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to the polling result of the first TCI state sequence transmitted in the part corresponding to the second time domain resource and the TCI state corresponding to the nth transmission.

In one possible design, if the time domain resource of the nth transmission corresponding to the second time domain resource changes, the nth transmission is transmitted after the second time domain resource;

determining a corresponding relation between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to a polling result of the first TCI state sequence transmitted in a part corresponding to the second time domain resource and a polling result of the first TCI state sequence in a transmission set;

wherein the transmission set comprises repeated transmissions corresponding to the data after the second time domain resource, and the transmission set comprises the nth transmission.

In one possible design, the instructions in the program are further to perform the following operations: acquiring TCI configuration information, wherein the TCI configuration information is used for indicating at least one TCI state;

upon said determining a first TCI state sequence for repeated transmission of data, instructions in the program are further to: and determining the first TCI state sequence according to the TCI configuration information.

In one possible design, the instructions in the program may be configured to, when determining the first TCI state sequence according to the TCI configuration information:

and polling the at least one TCI state in sequence according to the configuration transmission times of the repeated transmission to obtain the first TCI state sequence.

In one possible design, the instructions in the program, when determining the first TCI state sequence according to the TCI configuration information, are further configured to:

respectively determining the number of each TCI state in the first TCI state sequence in the at least one TCI state according to the configured transmission times of the repeated transmission;

determining the first TCI state sequence according to the number of each TCI state.

In one possible design, the TCI configuration information includes a plurality of TCI indices; alternatively, the first and second electrodes may be,

the TCI configuration information comprises a plurality of TCI states and a configuration order of the plurality of TCI states; alternatively, the first and second electrodes may be,

the TCI configuration information comprises a group index of a control resource set CORESET to which a plurality of TCI states belong.

In one possible design, the repeated transmission may include at least one transmission of an uplink transmission, or the repeated transmission may include at least one transmission of a downlink transmission.

In one possible design, the repeatedly transmitted information is obtained through a physical downlink control channel PDCCH dynamic configuration, or through a high-layer signaling semi-static configuration; wherein the repeatedly transmitted information includes the configured transmission times of the repeated transmission and/or the location information of the first time domain resource and/or the location information of the second time domain resource.

In one possible design, the configured transmission times of the repeated transmission are obtained by configuring downlink control information DCI, and the configured transmission times are indicated in a time domain resource indication field of the DCI.

The data transmission device includes hardware structures and/or software modules for performing the respective functions in order to implement the functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software.

In the embodiment of the present application, the data transmission device may be divided into the functional units according to the method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

Referring to fig. 14, fig. 14 is a schematic diagram illustrating another possible structure of the data transmission device according to the above embodiment. Referring to fig. 14, the data transmission apparatus 1400 may include: a processing unit 1401 and a communication unit 1402. Wherein these units may perform the respective functions of the data transmission device in the above-described method example. The processing unit 1401 is configured to control and manage the actions of the data transmission device, for example, the processing unit 1401 is configured to support the data transmission device to perform steps 301 to 302 in fig. 3, steps 402 to 404 in fig. 4, steps 702 to 704 in fig. 7, steps 902 and 905 in fig. 9, steps 1102 and 1105 in fig. 11, and/or other processes for the technologies described herein. The communication unit 1402 may be used to support communication between the data transmission device and other devices, such as communication with a terminal, communication with a network device, and the like. The data transfer device may further comprise a storage unit 1403 for storing program codes and data of the data transfer device.

Wherein the processing unit 1401 may be a processor or a controller, the communication unit 1402 may be a transceiver, a transceiver circuit, a radio frequency chip, etc., and the storage unit 1403 may be a memory.

For example, processing unit 1401, operable to determine a first transmission configuration indication state, TCI state sequence, for repeated transmission of data, the first TCI state sequence comprising at least one TCI state, each transmission of the repeated transmission being associated with one TCI state of the first TCI state sequence;

the processing unit 1401 is further configured to, when the time domain resource corresponding to the repeated transmission changes, determine, according to a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to a first time domain resource, a second TCI state sequence corresponding to the first time domain resource, where the first time domain resource is the time domain resource corresponding to the repeated transmission after the time domain resource changes, and the second TCI state sequence includes at least one TCI state;

a communication unit 1402, configured to perform repeated transmission of the data on the first time domain resource according to the second TCI state sequence, where each transmission uses a TCI state in the second TCI state sequence corresponding to the transmission.

In one possible design, the processing unit 1401 may further be configured to determine, according to the first TCI state sequence and target information, a correspondence relationship between each transmission corresponding to a TCI state in the first TCI state sequence and a first time domain resource, where the target information is used to indicate a position of each transmission corresponding to the first time domain resource;

wherein the target information comprises any one or more of:

In one possible design, the processing unit 1401 may further be configured to determine, according to a polling result of each transmission corresponding to the first TCI state sequence in the first time domain resource, a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource;

In one possible design, the processing unit 1401 may be specifically configured to, when there is no repeated transmission corresponding to the data after the second time domain resource, determine, according to a polling result of each transmission corresponding to the first TCI state sequence in the first time domain resource, a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource.

In one possible design, the processing unit 1401 may further be configured to determine, according to a polling result transmitted by a portion of the first TCI state sequence corresponding to the second time domain resource, a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource;

In a possible design, the processing unit 1401 may be specifically configured to, when there is no repeated transmission corresponding to the data after all the second time domain resources, determine, according to a polling result that the first TCI state sequence is transmitted in a portion corresponding to the second time domain resources, a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resources.

the processing unit 1401 may specifically be configured to determine, according to a polling result transmitted by the first TCI state sequence in the portion corresponding to the second time domain resource and the TCI state corresponding to the nth transmission, a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource.

a processing unit 1401, which is specifically configured to determine, according to a polling result of the first TCI state sequence in the part corresponding to the second time domain resource and a polling result of the first TCI state sequence in a transmission set, a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource;

In one possible design, the communication unit 1402 may further be configured to obtain TCI configuration information, where the TCI configuration information is used to indicate at least one TCI state;

the processing unit 1401 may specifically be configured to determine the first TCI state sequence according to the TCI configuration information.

In one possible design, the processing unit 1401 may be specifically configured to sequentially poll the at least one TCI state according to the configured transmission number of the repeated transmission, so as to obtain the first TCI state sequence.

In one possible design, the processing unit 1401 may be specifically configured to determine, according to a configured transmission number of the repeated transmission, a number of each of the at least one TCI state in the first TCI state sequence; determining the first TCI state sequence according to the number of each TCI state.

When the processing unit 1401 is a processor, the communication unit 1402 is a communication interface, and the storage unit 1403 is a memory, the data transmission device according to the embodiment of the present application may be the data transmission device shown in fig. 13.

Optionally, the network device may implement, by the above-mentioned unit, part or all of the steps performed by the data transmission device in the methods in the embodiments shown in fig. 3 to fig. 11. It should be understood that the embodiments of the present application are device embodiments corresponding to the method embodiments, and the description of the method embodiments is also applicable to the embodiments of the present application, which is not repeated herein.

The application also provides a communication system, which comprises the terminal and/or the network equipment. Optionally, the system may further include other devices interacting with the network element in the solution provided in the embodiment of the present application. The network device and/or the terminal may perform part or all of the steps in the methods in the embodiments shown in fig. 3 to 11, which may specifically refer to the related descriptions of the embodiments described above, and are not described herein again.

The present application also provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer execute some or all of the steps described in the data transmission device in the above method embodiments.

Embodiments of the present application also provide a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps described in the data transmission apparatus in the above method embodiments. The computer program product may be a software installation package.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be located in a communication apparatus such as a data transmission device, a network device. Of course, the processor and the storage medium may reside as discrete components in a communication apparatus.

It is to be understood that the reference herein to first, second, third and various numerical designations is merely a convenient division to describe and is not intended to limit the scope of the embodiments of the present application. "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship. The sequence numbers of the above processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not be limited in any way to the implementation process of the embodiments of the present application.

Those skilled in the art will appreciate that in one or more of the examples described above, the functionality described in the embodiments of the present application may be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Claims

A method of data transmission, comprising:

determining a first transmission configuration indication state, TCI state, sequence for repeated transmission of data, the first TCI state sequence comprising at least one TCI state, each transmission of the repeated transmission being associated with one TCI state in the first TCI state sequence;

when the time domain resource corresponding to the repeated transmission is changed, determining a second TCI state sequence corresponding to the first time domain resource according to a corresponding relation between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource, where the first time domain resource is the time domain resource corresponding to the repeated transmission after the time domain resource is changed, and the second TCI state sequence includes at least one TCI state;

and according to the second TCI state sequence, performing repeated transmission of the data on the first time domain resource, wherein at each transmission, the TCI state corresponding to the transmission in the second TCI state sequence is used.
The method of claim 1, further comprising:

determining a corresponding relation between each transmission corresponding to a TCI state in the first TCI state sequence and a first time domain resource according to the first TCI state sequence and target information, wherein the target information is used for indicating a position of each transmission corresponding to the first time domain resource;

wherein the target information comprises any one or more of:

the position information of the first time domain resource, the transmission times corresponding to the first time domain resource, the position information of the time domain resource corresponding to the first transmission in the second time domain resource, and the configuration transmission times of the repeated transmission; the second time domain resource is corresponding to repeated transmission before the time domain resource changes, and the transmission times corresponding to the first time domain resource are less than or equal to the configuration transmission times.
The method of claim 1, further comprising:

determining a corresponding relation between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to a polling result of each transmission corresponding to the first time domain resource of the first TCI state sequence;

the TCI state corresponding to each transmission corresponding to the second time domain resource and the TCI state corresponding to each transmission corresponding to the first time domain resource are both associated with the number of the transmission, and the second time domain resource is a time domain resource corresponding to repeated transmission before the time domain resource changes.
The method of claim 3, wherein the determining the correspondence between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to the polling result of each transmission corresponding to the first TCI state sequence at the first time domain resource comprises:

when repeated transmission corresponding to the data does not exist after the second time domain resource, determining the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to the polling result of each transmission corresponding to the first TCI state sequence in the first time domain resource.
The method of claim 1, further comprising:

determining a corresponding relation between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to a polling result transmitted by the first TCI state sequence in a part corresponding to the second time domain resource;

the second time domain resource is corresponding to the repeated transmission before the time domain resource changes, the partial transmission is corresponding to the time domain resource which does not change in the second time domain resource, and the position of the time domain resource corresponding to the partial transmission corresponds to the position of the first time domain resource.
The method of claim 5, wherein the determining the correspondence between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to the polling result of the partial transmission corresponding to the second time domain resource in the first TCI state sequence comprises:

when repeated transmission corresponding to the data does not exist after the second time domain resource, determining the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to the polling result of the first TCI state sequence transmitted in the part corresponding to the second time domain resource.
The method of claim 5, wherein if the time domain resource of an nth transmission corresponding to the second time domain resource changes, the nth transmission being transmitted after the second time domain resource, the TCI state corresponding to the nth transmission remains unchanged;

the determining, according to a polling result transmitted by the first TCI state sequence in the portion corresponding to the second time domain resource, a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource, includes:

and determining the corresponding relation between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to the polling result of the first TCI state sequence transmitted in the part corresponding to the second time domain resource and the TCI state corresponding to the nth transmission.
The method of claim 5, wherein if the time domain resource of the nth transmission corresponding to the second time domain resource changes, the nth transmission is transmitted after the second time domain resource;

the determining, according to a polling result transmitted by the first TCI state sequence in the portion corresponding to the second time domain resource, a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource, includes:

determining a corresponding relation between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource according to a polling result of the first TCI state sequence transmitted in a part corresponding to the second time domain resource and a polling result of the first TCI state sequence in a transmission set;

wherein the transmission set comprises repeated transmissions corresponding to the data after the second time domain resource, and the transmission set comprises the nth transmission.
The method according to any one of claims 1-8, further comprising:

acquiring TCI configuration information, wherein the TCI configuration information is used for indicating at least one TCI state;

the determining a first TCI state sequence for repeated transmission of data includes:

and determining the first TCI state sequence according to the TCI configuration information.
The method of claim 9, wherein the determining the first TCI state sequence according to the TCI configuration information comprises:

and polling the at least one TCI state in sequence according to the configuration transmission times of the repeated transmission to obtain the first TCI state sequence.
The method of claim 9, wherein the determining the first TCI state sequence according to the TCI configuration information comprises:

respectively determining the number of each TCI state in the first TCI state sequence in the at least one TCI state according to the configured transmission times of the repeated transmission;

determining the first TCI state sequence according to the number of each TCI state.
The method according to any one of claims 9 to 11,

the TCI configuration information comprises a plurality of TCI indexes; alternatively, the first and second electrodes may be,

the TCI configuration information comprises a plurality of TCI states and a configuration order of the plurality of TCI states; alternatively, the first and second electrodes may be,

the TCI configuration information comprises a group index of a control resource set CORESET to which a plurality of TCI states belong.
The method of any of claims 1-8, wherein the repeated transmission comprises at least one transmission of an uplink transmission, or wherein the repeated transmission comprises at least one transmission of a downlink transmission.
The method according to any of claims 1-8, wherein the repeatedly transmitted information is obtained by physical downlink control channel, PDCCH, dynamic configuration, or by high layer signaling semi-static configuration; wherein the repeatedly transmitted information includes the configured transmission times of the repeated transmission and/or the location information of the first time domain resource and/or the location information of the second time domain resource.
The method according to any of claims 1-8, wherein the configured transmission number of the repeated transmission is obtained by configuring a Downlink Control Information (DCI), and the configured transmission number is indicated in a time domain resource indication (TDR) field of the DCI.
A data transmission device, comprising a processing unit and a communication unit;

the processing unit is configured to determine a first transmission configuration indication state, TCI, state sequence for repeated transmission of data, the first TCI state sequence including at least one TCI state, each transmission of the repeated transmission being associated with one TCI state in the first TCI state sequence;

the processing unit is further configured to determine, when the time domain resource corresponding to the repeated transmission changes, a second TCI state sequence corresponding to the first time domain resource according to a correspondence between a TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource, where the first time domain resource is the time domain resource corresponding to the repeated transmission after the time domain resource changes, and the second TCI state sequence includes at least one TCI state;

and the communication unit is configured to perform repeated transmission of the data on the first time domain resource according to the second TCI state sequence, where a TCI state corresponding to the transmission in the second TCI state sequence is used for each transmission.
A data transmission device comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured for execution by the processor, the programs including instructions for performing the steps in the method of any of claims 1-15.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, the computer program causing a computer to perform the method according to any one of claims 1-15.