CN113711661B

CN113711661B - Data transmission method, device and medium

Info

Publication number: CN113711661B
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: 2023-06-27
Anticipated expiration: 2039-09-30
Also published as: CN113711661A; WO2021062812A1

Abstract

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

Description

Data transmission method, device and medium

Technical Field

The present disclosure 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 can instruct repeated transmission of data by configuring a transmission configuration instruction (Transmission Configuration Indicator, TCI) state (state), so that when the terminal performs repeated transmission of data, the terminal performs data transmission by adopting a transmission parameter indicated by the TCI state, thereby improving the reliability of data transmission. However, there may be an interruption in the repeated transmission, resulting in a change in the time domain resources employed by the terminal when performing the repeated transmission. For the case of an interrupted transmission, the terminal cannot determine what TCI state should be used for data transmission.

Disclosure of Invention

The embodiment of the application provides a data transmission method, device and medium, which can determine an available TCI state for data transmission according to the corresponding relation between time domain resources and TCI state sequences actually transmitted when configuration resources of repeated transmission are changed.

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

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

when the time domain resource corresponding to the repeated transmission changes, determining a second TCI state sequence corresponding to the first time domain resource according to the corresponding relation between 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 changes, and the second TCI state sequence comprises at least one TCI state;

and according to the second TCI state sequence, repeating transmission of the data on the first time domain resource, wherein each transmission uses the TCI state corresponding to the transmission in the second TCI state sequence.

In a second aspect, an embodiment of the present application provides a data transmission device, where the data transmission device is configured to implement part or all of the functions of the behavior of the terminal in the above method. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above. In a possible design, the terminal may comprise a processing unit and a communication unit, the processing unit being configured to support the terminal to perform the respective functions of the above-described method. The communication unit is used for supporting communication between the terminal and other devices. The terminal may further comprise a storage unit for coupling with the processing unit, which stores programs (instructions), data, etc. necessary for the terminal. In the alternative, 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 comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in any of the methods of the first aspect of embodiments of the present application.

In a fourth aspect, embodiments of the present application provide a communication system, which includes a terminal and/or a network device, where 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 that interact with the terminal or the network device in the solution provided in the embodiments of the present application.

In a fifth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program that causes a computer to perform some or all of the steps as described in the method of the first aspect of the embodiments of the present application.

In a sixth aspect, embodiments of the present application provide a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program 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 by the embodiment of the application, when the time domain resource corresponding to the repeated transmission changes, the data transmission device can determine the second TCI state sequence corresponding to the first time domain resource according to the corresponding relation between the first TCI state sequence corresponding to the configuration transmission and the first time domain resource corresponding to the actual transmission, and further can 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 can be performed by determining the applicable TCI state, and the reliability of the data transmission can be improved.

Drawings

The drawings used in the description of the embodiments or the prior art will be described below.

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

fig. 2a is a schematic diagram of a time slot based retransmission provided in an embodiment of the present application;

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

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

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

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

fig. 4 is an interaction schematic diagram of a data transmission method provided in an embodiment of the present application;

fig. 5a is a schematic diagram of correspondence between configuration transmission and actual transmission according to an embodiment of the present application;

FIG. 5b is a schematic diagram of a configuration transfer and TCI state provided in an embodiment of the present application;

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

fig. 6a is a schematic diagram of correspondence between another configuration transmission and an actual transmission according to an embodiment of the present application;

FIG. 6b is a schematic diagram of another exemplary transmission and TCI state provided by an embodiment of the present application;

Fig. 7 is an interaction schematic diagram of another data transmission method according to an embodiment of the present application;

fig. 8a is a schematic diagram of a correspondence between a further configuration transmission and an actual transmission according to an embodiment of the present application;

FIG. 8b is a schematic diagram of still another actual transmission and TCI state provided by an embodiment of the present application;

fig. 9 is an interaction schematic diagram of yet another data transmission method according to an embodiment of the present application;

fig. 10a is a schematic diagram of a correspondence between a further configuration transmission and an actual transmission according to an embodiment of the present application;

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

fig. 11 is an interaction schematic diagram of yet another data transmission method according to an embodiment of the present application;

fig. 12a is a schematic diagram of a correspondence between a further configuration transmission and an actual transmission according to an embodiment of the present application;

FIG. 12b is a schematic diagram of still another actual transmission and TCI state provided by an 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 is understood that the technical solution of the present application may be applied to a fifth generation mobile communication (the 5th Generation,5G) system or a system called a New Radio (NR) system, a long term evolution (Long Term Evolution, abbreviated as LTE), etc., which are not listed herein. In addition, the technical scheme of the application can be particularly applied to data transmission equipment, and is used for data transmission, such as data transmission according to TCI state. Alternatively, the data transmission device may be a terminal or a network device.

Referring to fig. 1, an architecture diagram of a communication system is provided in the present application. 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 retransmission technique, i.e. a retransmission technique. The network device 101 and the terminal 102 may transmit data, for example, the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) carrying the same data, through different time slots/TRP/redundancy versions, so as to help obtain diversity gain, reduce the Error detection probability such as Block Error Rate (BLER), and further improve the reliability of data transmission.

In a possible design, the repeated transmission may occur in multiple time slots, as shown in fig. 2 a; it may also be performed on a plurality of data Transmission devices such as Transmission/reception points (TRP), as shown in fig. 2 b. For example, for repetition of multiple timeslots, multiple PDSCH carrying the same data corresponding to the repetition transmission may be scheduled for transmission on consecutive multiple timeslots through DCI, or may be transmitted on non-consecutive multiple timeslots, and the same frequency domain resource may be used for transmission. As another example, for repetition of multiple TRPs, PDSCH 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 repeated transmission at a time). Repetition of multiple TRPs may also be combined with multiple time slots, with discontinuous time slots for transmission, or with continuous time slots for transmission, with different TRPs for transmission in different time slots, etc. Thereby helping to improve data transmission reliability, ensuring low latency high reliability characteristics of ultra-reliable, low latency communications (Massive Machine Type Communications, URLLC), etc.

Therefore, in the repeated transmission scene, the data transmission device can perform data transmission according to the TCI state corresponding to each repeated transmission, for example, the data transmission device performs data transmission by adopting the transmission parameters corresponding to the TCI state. For the repeated transmission, there may be a case where the configuration transmission resource changes, such as a case where the repeated transmission may be interrupted, or there may be other cases where the configuration transmission resource transmission that causes the repeated transmission changes. If the configured transmission resources change, 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 cause that the data cannot be received or sent correctly. For example, some systems are flexible in uplink and downlink configuration, some important system information may exist at some time, which may cause partial interruption of multiple transmission, as shown in fig. 2c and 2d, where the second transmission in 4 repeated transmissions is interrupted by a system message with higher priority, such as SSB, and the resources of repeated transmissions change. For the case that the repeated transmission resource changes, such as transmission interruption, there is no explicit TCI mapping mode, so that the data transmission device cannot determine the TCI state corresponding to the actual transmission to perform data transmission, for example, cannot determine what channel estimation filtering parameters of the TRP corresponding to the TCI state should be used to receive 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 can be 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 further data transmission can be performed according to the second TCI state sequence, so that the purpose that the data transmission can be performed by determining the available TCI state when the configuration resource of the repeated transmission changes, the data can be received or transmitted by adopting the correct TCI state in discontinuous transmission resources, the reliability of the data transmission is improved, the correct transmission of the URLLC is guaranteed, and the purpose of high reliability with low time delay is achieved.

In this application, the network device may be an entity on the network side for sending or receiving information, for example, a base station, which may be used for communication with one or more terminals, or may be used for communication with one or more base stations with a part of terminal functions (for example, communication between a macro base station and a micro base station, for example, communication between access points). The base station may be a base transceiver station (Base Transceiver Station, BTS), an evolved base station (Evolutional Node B, eNB) in a long term evolution (Long Term Evolution, LTE) system, a base station gNB in a 5G system, an NR system, etc., which are not illustrated herein. Alternatively, the network device 101 may be a transmission Point (transmission Point, TP), an Access Point (AP), a transmission Point/transmission reception Point (transmission and receiver Point, TRP), a relay device, a Central Unit (CU), or other network devices with base station functions, etc., which is not limited in this application.

In the present application, the terminal is a device having a communication function, and may be, for example, an in-vehicle device, a wearable device, a handheld device (such as a smart phone), or the like. The terminal may also be referred to by other names, such as User Equipment (UE), subscriber unit, mobile station (mobile unit), terminal Equipment, etc., without limitation.

In the present 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 the present application.

In the present application, the TCI state sequence may include at least one TCI state (hereinafter, may be abbreviated as TCI) sequentially arranged. 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 will be appreciated that the communication system shown in fig. 1 is only used as an example and not limiting the application, and those skilled in the art will appreciate that, as the network architecture evolves and new service scenarios occur, the technical solution provided in the present application is equally applicable to similar technical problems.

The application discloses a data transmission method and related equipment, wherein the data transmission equipment can determine the TCI which can be adopted to perform data transmission when the configuration resources of repeated transmission change, thereby being beneficial to improving the reliability of data transmission. The following detailed description refers to the accompanying drawings.

Referring to fig. 3, fig. 3 is a flow chart of a data transmission method according to an embodiment of the present application. The method of the 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.

The first TCI state sequence may include at least one TCI state, where each transmission of the repeated transmission is associated with one TCI state in the first TCI state sequence, i.e., each transmission of the repeated transmission corresponds to a TCI state in a corresponding position in the first TCI state sequence. For example, the first transmission (initial transmission, first transmission) of the repeated transmission is associated with a first TCI state of the first TCI state sequence, the second transmission of the repeated transmission is associated with a second TCI state of the first TCI state sequence, and so on, i.e., the nth transmission of the repeated transmission 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 that, when the nth transmission is performed, data is transmitted according to the nth TCI state, for example, data is received according to a reception parameter corresponding to the nth TCI state, and for example, data is sent according to a transmission parameter corresponding to the nth TCI state.

The first TCI state sequence may refer to a TCI state sequence corresponding to a configuration transmission of the repeated transmission, or a TCI state sequence corresponding to a configuration transmission resource of the repeated transmission, that is, a second time domain resource. Alternatively, the first TCI state sequence may be determined according to TCI configuration information, or may be configured by a network device, or may be pre-stored, or may be determined in other manners.

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

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 further be configured to indicate an order of the at least one TCI state, so that the data transmission device may determine an order of the TCI states included in the first TCI state sequence according to the order; alternatively, the data transmission device may determine the order of the TCI states included in the first TCI state sequence by other manners, such as randomly determining the order of the at least one TCI state, determining the order according to an index of the at least one TCI state, determining the order according to a group index of a control resource set CORESET to which the at least one TCI state belongs, and so on, which is not limited in this application. The number of configuration transmissions may be carried in the TCI configuration information, or may be carried in other information, and 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 poll at least one TCI state indicated by the TCI configuration information in sequence according to the retransmission times, so as to obtain the first TCI state sequence. For example, a first TCI state (hereinafter referred to as a first TCI) is used for the 1 st, j+1 st, 2j+1 th transmission, a second TCI state (hereinafter referred to as a second TCI) is used for the 2 nd, j+2 nd, 2j+2 nd transmission, a third TCI state (hereinafter referred to as a third TCI) is used for the 3 rd, j+3 th, 2j+3 rd transmission, and so on in the first TCI configuration information. 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 and 3 rd transmissions, and the second TCI is used for the 2 nd and 4 th transmissions. For 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 a first TCI, a second TCI, i.e. the first TCI is used for the 1 st, 3 rd and 5 th transmissions, and the second TCI is used for the 2 nd, 4 th and 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 then the first TCI state sequence may be the first TCI, the second TCI, the third TCI, i.e. the first TCI is used for the 1 st and 4 th transmission, the second TCI is used for the 2 nd and 5 th transmission, the third TCI is used for the 3 rd and 6 th transmission, and so on, which are not listed herein.

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

302. When the time domain resource corresponding to the repeated transmission changes, 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 repeated transmission after the change, and the second TCI state sequence may include at least one TCI state. The determining, by the data transmission device, the second TCI state sequence corresponding to the first time domain resource may refer to: and respectively determining the TCI state corresponding to each transmission (each repeated transmission) in the first time domain resource, or respectively determining the TCI state corresponding to the time domain resource corresponding to each repeated transmission in the first time domain resource, namely determining the TCI state corresponding to each actual transmission of the repeated transmission. That is, the data transmission apparatus can determine the TCI configuration, i.e., the second TCI state sequence, of each actual transmission of the repeated transmission according to the mapping relationship between each actual transmission of the repeated transmission and the TCI state in the first TCI state sequence.

In one 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 (such as a resource 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 transmission being interrupted, configuration transmission resources being occupied, etc. Optionally, the change may be caused by various situations, for example, a certain configuration transmission is interrupted, for example, by interruption of system information with higher priority, or a configuration transmission resource corresponding to a certain configuration transmission is occupied, for example, by system information with higher priority, or the time domain resource of the repeated transmission is actively adjusted, or other situations that the transmission resource changes, which is not limited in the application.

In one possible design, the data transmission device may determine, according to the first TCI state sequence and the target information, a corresponding relationship between the 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 a transmission resource actually used, 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 the location information of each transmission corresponding to the first time domain resource, the number of transmissions corresponding to the first time domain resource, the location information of the time domain resource (assumed to be the third time domain resource) corresponding to the first transmission in the second time domain resource, the number of configuration transmissions of the repeated transmission, and the location information of the time domain resource that changes; the second time domain resource is a time domain resource corresponding to repeated transmission before the time domain resource is changed, and the transmission times corresponding to the first time domain resource is less than or equal to the configured transmission times of the repeated transmission. Alternatively, 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 resource start location, length, end location, including for example a start location and length, and including for example a start location and end location, etc. If the data transfer device is a terminal, the target information may be sent by the network device to the terminal or may be otherwise determined by the terminal.

In this application, the number of transmissions corresponding to the first time domain resource is the number of transmissions corresponding to the actual transmission, or may be referred to as the number of transmissions after the time domain resource changes, which may also be referred to as the actual number of transmissions, the actual number of retransmissions, and so on. The number of transmission configurations of the repeated transmission is the number of transmission configurations corresponding to the transmission, or the number of transmission configurations corresponding to the second time domain resource, or the number of transmission configurations before the time domain resource changes, or the like, which may also be called the number of transmission configurations, the number of retransmission configurations, the number of initial retransmission, or the like.

In one possible design, when determining the correspondence, the data transmission device may determine, according to a polling result of each transmission of the first TCI state sequence corresponding to the first time domain resource, a correspondence between a TCI state in the first TCI state sequence and each transmission of 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 each transmission of the second time domain resource directly from the first TCI state sequence. The TCI state corresponding to each transmission of the second time domain resource and the TCI state corresponding to each transmission of the first time domain resource are 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, for example, a TCI state sequence formed by the first i TCI states in the first TCI state sequence, where i may be the same as the number of transmissions corresponding to the first time domain resource.

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

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

For example, optionally, when determining the correspondence, the data transmission device may determine, according to a polling result of the first TCI state sequence transmitted in the portion corresponding to the second time domain resource when there is no retransmission corresponding to the data after the second time domain resource, a correspondence between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource. That is, when the actual transmission does not occur after all the configuration transmission resources of the repeated transmission of data such as PDSCH, the first TCI state sequence may poll on a part of the configuration transmission of the repeated transmission, that is, on a configuration transmission other than the configuration transmission in which the time domain resource is changed in the configuration transmission, and the part of the polled transmission and the actual transmission correspond one by one to the location of the time domain resource.

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. When determining the corresponding relationship, the data transmission device may determine 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 portion corresponding to the second time domain resource and the TCI state corresponding to the nth transmission. That is, if an nth configuration transmission (an nth transmission corresponding to the number of configuration transmissions) among the configuration transmissions is suspended and the nth configuration transmission is transmitted after all configuration transmission resources of the repeated transmission, the first TCI state sequence may be polled on a portion of the configuration transmissions of the repeated transmission to obtain the second TCI state sequence. The actual number of transmissions and time domain resources corresponding to the nth configuration transmission change, but its TCI configuration remains unchanged.

As another example, the nth transmission may be transmitted after the second time domain resource if the time domain resource of the nth transmission changes in the second time domain resource. Further, when determining the correspondence, the data transmission device may determine the correspondence between the 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 the portion corresponding to the second time domain resource and a polling result of the first TCI state sequence in the transmission set. Wherein the transmission set includes repeated transmission corresponding to the data after the second time domain resource, and the transmission set includes the nth transmission. That is, if the nth configuration transmission is aborted and the nth configuration transmission is transmitted after all configuration transmission resources of the repeated transmission, a supplemental transmission is made to a transmission set after all configuration transmission resources of the repeated transmission, the first TCI state sequence may be polled on the transmission set and the first TCI state sequence may be polled on a portion of the configuration transmission of the repeated transmission to obtain the second TCI state sequence.

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

After determining the second TCI state sequence corresponding to the first time domain resource, i.e. the actual transmission resource, the repeated transmission of the data can be performed on the first time domain resource according to the second TCI state sequence, i.e. according to the TCI state corresponding to each transmission corresponding to the first time domain resource, the data transmission is performed on the time domain resource corresponding to the transmission (i.e. the actual transmission resource of the transmission), including the sending or receiving of the data. For example, the terminal may send 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 send 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 information for the retransmission is obtained by dynamic configuration of the physical downlink control channel (Physical Downlink Control Channel, PDCCH) or by semi-static configuration of higher layer signaling. For example, when the data transmission device is a terminal, the network device may send a PDCCH carrying the information of the repeated transmission to the terminal, and the terminal may receive the PDCCH; for another example, the network device may send higher layer signaling carrying the repeatedly transmitted information to the terminal, which 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 relative to a second time domain resource, and so on, 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 the time domain resource that changes, and so on.

In one possible design, the configured number of transmissions of the repeated transmission may be configured by downlink control information (Downlink Control Information, DCI), e.g., the network device may send the DCI carrying the configured number of transmissions to the terminal, which may receive the DCI. Optionally, the number of configured transmissions 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 may be further carried in the DCI.

In one possible design, the number of configured transmissions of the repeated transmission may be obtained according to TCI information, e.g., the network device may send TCI information carrying the number of configured transmissions to the terminal, which 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 one possible design, the time domain resource corresponding to the repeated transmission, i.e. the first time domain resource or the second time domain resource, may be in one time slot, or may span a time slot, or may be in multiple time slots, which is not limited in this application.

In one possible design, the TCI may include a QuasiCo-location (QCL), and the data transmission device may determine the beam at the time of data transmission according to an indication of the QCL, e.g., the network device may notify the terminal of the received beam at the time of data transmission through an indication of the QCL, and the network device may determine the transmit beam according to the QCL, etc. Alternatively, QCL may be indicated by: indication is indicated by RRC configuration, or by RRC configuration and activation by MAC-CE and indication with DCI. For the MAC-CE based indication scheme, a set of TCI states may be configured by higher layers, from each of which a corresponding QCL reference may be determined. For DCI-based indication, the acquisition of QCL information may go through three steps, RRC configuration, MAC-CE activation, and DCI indication. For example, taking a data transmission device as a terminal, for repeated transmission of multiple TRPs, because the difference of the positions of different TRPs in space can cause the difference of large-scale channel parameters on a receiving link, the terminal can use different receiving parameters such as channel estimation filtering parameters when receiving data from different TRPs, in order to simplify the adjustment of the channel estimation filtering parameters when the terminal receives data each time, the network device can inform the terminal of a receiving beam during data receiving through the indication of QCL, so as to improve the reliability of data transmission.

In one 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, so as to help save overhead of determining the TCI corresponding to the actual transmission by the system.

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, where the retransmission 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 data transmission efficiency.

In this embodiment, when the time domain resource corresponding to the repeated transmission changes, the data transmission device determines, according to the corresponding relationship between the first TCI state sequence corresponding to the configured transmission and the first time domain resource corresponding to the actual transmission, a second TCI state sequence corresponding to the first time domain resource, and further performs data transmission on the first time domain resource according to the second TCI state sequence, so that when the configured resource of the repeated transmission changes, it is possible to determine that the TCI state that the data transmission device can use to perform data transmission, and this is helpful to improve reliability of data transmission.

Referring to fig. 4, fig. 4 is an interaction schematic diagram of a data transmission method according to an embodiment of the present application. The method of the 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 determine, based on polling of the first TCI state sequence corresponding to the configuration transmission of the repeated transmission on each actual transmission of the repeated transmission, the second TCI state sequence corresponding to the actual transmission to perform data transmission. As shown in fig. 4, the data transmission method may include:

401. the network device sends 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. For example, the TCI configuration information indicates TCI0 and TCI1, and the number of configuration transmissions is 4, and it is assumed that the first TCI state sequence determined by the terminal is { TCI0,TCI 1,TCI 0,TCI 1}.

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

403. When the time domain resource corresponding to the repeated transmission changes, 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 in each transmission corresponding to 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 changes, the terminal may associate (corresponds to, maps) the TCI state in the first TCI state sequence with each transmission corresponding to the first time domain resource according to the polling result of the first TCI state sequence in each transmission corresponding to the first time domain resource, so as 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 of the repeated transmission corresponds to the transmission number of repeated transmission. If the terminal determines that the second transmission of the configured transmission resource, i.e. the second time domain resource, collides with the system information according to the network side configuration, and the configured second transmission does not perform actual data, e.g. PDSCH transmission, then 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 an 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 number corresponding to the repeated transmission is the same as the configured transmission number, 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, then the terminal may directly map the TCI state corresponding to the actual transmission according to the TCI state corresponding to the configured transmission. The arrow in fig. 5a may be used to indicate the TCI correspondence. In this example, the configuration transfer may have a corresponding TCI state as shown in fig. 5b, where the corresponding first TCI state sequence is { TCI 0,TCI 1,TCI 0,TCI 1}; the corresponding TCI state of the actual transmission may be shown in fig. 5c, and the corresponding second TCI state sequence is { TCI 0,TCI 1,TCI 0,TCI 1}.

If the actual transmission corresponding to the repeated transmission does not exist (does not occur) after the second time domain resource, that is, after all the configured transmission resources, as shown in fig. 6a, the number of actual transmissions corresponding to the repeated transmission is smaller than the number of configured transmissions, 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 configuration transfer may have a corresponding TCI state as shown in fig. 5b, where the corresponding first TCI state sequence is { TCI 0,TCI 1,TCI 0,TCI 1}; the corresponding TCI state of the actual transmission may be shown in fig. 6b, and the corresponding second TCI state sequence is { TCI 0, TCI 1, TCI 0}.

405. And the terminal repeatedly transmits 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, based on the above manner, a TCI state corresponding to the first time domain resource, which is an actual transmission corresponding to the repeated transmission, e.g., the above second TCI state sequence, and further may perform data transmission in the first time domain resource based on the second TCI state sequence. For example, the terminal may send data on the first time domain resource based on the second TCI state sequence, and the network device may receive data from the terminal on the first time domain resource based on the second TCI state sequence; for another example, the network device may send data on the first time domain resource based on the second TCI state sequence, the terminal may receive data from the network device on 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 the TCI state corresponding to the actual transmission by the system, which is not described herein.

In this embodiment, when the time domain resource corresponding to the repeated transmission changes, the terminal can poll on each actual transmission of the repeated transmission based on the first TCI state sequence to obtain TCI state information adopted in the actual transmission, and further perform data transmission on the actual transmission resource according to the TCI state adopted in the actual transmission, so that when the configuration resource of the repeated transmission changes, it can determine that the data transmission device can adopt the TCI state to perform data transmission, and thus the reliability of data transmission is improved.

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

701. the network device sends 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. For example, the TCI configuration information indicates TCI0 and TCI1, the number of configuration transmissions is 4, and the first TCI state sequence determined by the terminal is { TCI0,TCI 1,TCI 0,TCI 1}.

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

703. When the second time domain resource corresponding to the repeated transmission changes and the repeated transmission corresponding to the data does not exist after the second time domain resource, 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 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 partial transmission corresponds to the time domain resource and the position of the first time domain resource. As shown in fig. 8a, when the actual transmission no longer occurs after all of the configured transmission resources of the repeated transmission of data such as PDSCH, the first TCI state sequence may poll on a portion of the configured transmission of the repeated transmission, the polled portion of the transmission and the actual transmission corresponding one-to-one at the location of the time domain resource. In this example, the configuration transfer may have a corresponding TCI state as shown in fig. 5b, where the corresponding first TCI state sequence is { TCI0,TCI 1,TCI 0,TCI 1}; the corresponding TCI state of the actual transmission may be shown in fig. 8b, and the corresponding second TCI state sequence is { TCI0, TCI 1}.

705. And the terminal repeatedly transmits 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 embodiment, 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, based on the above manner, a second TCI state sequence corresponding to the actual transmission corresponding to the repeated transmission, that is, the first time domain resource, and further may perform data transmission in 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.

In this embodiment, when the time domain resource corresponding to the repeated transmission changes and no actual transmission corresponding to the repeated transmission exists after all the transmission resources are configured, the terminal polls on the repeated transmission based on the partial configuration transmission of the first TCI state sequence to obtain the TCI state information adopted in the actual transmission, so that the data transmission can be performed on the actual transmission resource according to the TCI state adopted in the actual transmission, and thus, when the configuration resource of the repeated transmission changes, the data transmission can be performed by determining the TCI state that can be adopted by the data transmission device, and the reliability of the data transmission can be improved.

Referring to fig. 9, fig. 9 is an interaction schematic diagram of another data transmission method according to an embodiment of the present application. In this embodiment, after all the configuration transmission resources have actual transmission corresponding to the repeated transmission, the data transmission device may determine, based on the first TCI state sequence corresponding to the repeated transmission configuration transmission, poll on the repeated transmission configuration transmission, and the changed TCI state corresponding to the nth transmission 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 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 determine the first TCI state sequence in other manners, and the description of the steps 901-902 may refer to the related description of the foregoing embodiments, which is not repeated herein.

903. When the time domain resource of the nth transmission corresponding to the second time domain resource changes, determining that the nth transmission is transmitted after the second time domain resource, wherein the TCI state corresponding to the nth transmission is kept unchanged.

In this embodiment, the 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. As shown in fig. 10a, in the present embodiment, n is 2, the TCI state of the second transmission (second configuration transmission) corresponding to the configuration transmission is TCI 1, and the TCI state of the fourth transmission corresponding to the configuration transmission is TCI 1 when the second transmission corresponding to the configuration transmission corresponds to the fourth transmission of the actual transmission. That is, the actual number of transmissions and time domain resources corresponding to the nth configuration transmission change, but its TCI configuration 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 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.

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 partial transmission corresponds to the time domain resource and the position of the first time domain resource. As shown in fig. 10a, when data such as PDSCH is actually transmitted after all the configuration transmission resources of the repeated transmission, the first TCI state sequence may poll on the portion of the repeated transmission configuration transmission to obtain TCI states corresponding to the first three transmissions of the actual transmission as TCI 0, TCI 0 and TCI 1, where the polled portion of transmission corresponds to the actual transmission one by one at the location of the time domain resource, and may combine with the TCI state corresponding to the second transmission where the time domain resource changes, i.e. TCI 1, to determine the second TCI state sequence. In this example, the configuration transfer may have a corresponding TCI state as shown in fig. 5b, where the corresponding first TCI state sequence is { TCI 0,TCI 1,TCI 0,TCI 1}; the corresponding TCI state of the actual transmission may be shown in fig. 10b, and the corresponding second TCI state sequence is { TCI 0,TCI 0,TCI 1,TCI 1}.

906. And the terminal repeatedly transmits the data on the first time domain resource according to the second TCI state sequence.

The description of this step 906 may refer to the related description of the above embodiment, which is not repeated herein.

In this embodiment, when the time domain resource corresponding to the repeated transmission changes and the actual transmission corresponding to the repeated transmission exists after all the transmission resources are configured, the terminal can poll on the repeated transmission based on the configuration transmission of the first TCI state sequence in the repeated transmission part, and the changed TCI state corresponding to the nth transmission in the first TCI state sequence obtains the TCI state information adopted in the actual transmission, so that the data transmission can be performed on the actual transmission resource according to the TCI adopted in the actual transmission, and the data transmission can be performed by determining the TCI state which can be adopted by the data transmission device when the configuration resource of the repeated transmission changes, thereby being beneficial to improving the reliability of the data transmission.

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

1101. the network device sends 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 determine the first TCI state sequence in other manners, and the descriptions of the steps 1101 to 1102 may refer to the related descriptions of the foregoing embodiments, which are 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, there is an actual transmission corresponding to the repeated transmission 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 changed according to 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 this embodiment, n is 2 and the set of transmissions 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 partial transmission corresponds to the time domain resource and the position of the first time domain resource. As shown in fig. 12a, when actual transmission occurs after all configuration transmission resources of repeated transmission of data such as PDSCH, the first TCI state sequence may poll on the portion of the repeated transmission configuration transmission to obtain TCI states corresponding to the first three times of actual transmission as TCI0, TCI0 and TCI1, where the polled portion of transmission corresponds to the position of the actual transmission in time domain resource one by one, and may combine the polling of the first TCI state sequence in the transmission set to obtain the TCI state corresponding to the second transmission included in the set, i.e. the first TCI and TCI0 of the first TCI state sequence, so as to determine the second TCI state sequence. In this example, the configuration transfer may have a corresponding TCI state as shown in fig. 5b, where the corresponding first TCI state sequence is { TCI0,TCI1,TCI 0,TCI 1}; the corresponding TCI state of the actual transmission may be shown in fig. 12b, and the corresponding second TCI state sequence is { TCI0,TCI 0,TCI1,TCI 0}.

1106. And the terminal repeatedly transmits the data on the first time domain resource according to the second TCI state sequence.

The description of this step 1106 may refer to the related description of the above embodiment, which is not repeated herein.

In this embodiment, when the time domain resource corresponding to the repeated transmission changes and the actual transmission corresponding to the repeated transmission exists after all the transmission resources are configured, the terminal can poll on the portion configured for the repeated transmission based on the first TCI state sequence, and poll on the n-th transmission that changes based on the first TCI state sequence, so as to obtain the TCI state information adopted in the actual transmission, and further perform data transmission on the actual transmission resource according to the TCI state adopted in the actual transmission, so that when the configured resource for the repeated transmission changes, it is possible to determine the TCI state that the data transmission device can adopt to perform data transmission, and thus the reliability of the data transmission is facilitated.

It should be understood that the foregoing method embodiments are all exemplary of the data transmission method of the present application, and the descriptions of the embodiments are focused on, where a portion of one embodiment is not described in detail, and reference may be made to related descriptions of other embodiments.

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 communication 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 including instructions for:

And carrying out repeated transmission of the data on the first time domain resource according to the second TCI state sequence through a communication interface 1330, wherein when each transmission is carried out, 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 for performing the following operations:

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

wherein the target information includes any one or more of the following:

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 a time domain resource corresponding to repeated transmission before the time domain resource changes, and the transmission times corresponding to the first time domain resource is smaller than or equal to the configuration transmission times.

Determining a corresponding relation between 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 in each transmission corresponding to the first time domain resource;

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, where 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 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 in the first time domain resource, the instructions in the program are further configured to perform the following operations:

and when the 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 in each transmission corresponding to the first time domain resource.

determining a corresponding relation between 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;

the second time domain resource is a time domain resource corresponding to repeated transmission before the time domain resource changes, the partial transmission is repeated transmission 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 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 transmission of the first TCI state sequence in the portion corresponding to the second time domain resource, the instructions in the program are further configured to:

and when the 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 is transmitted after the second time domain resource, and the TCI state corresponding to the nth transmission remains unchanged;

when determining 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 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 a time domain resource of an 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 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 includes repeated transmission corresponding to the data after the second time domain resource, and the transmission set includes the nth transmission.

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

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

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

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

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

determining the number of each TCI state in the first TCI state sequence according to the configuration transmission times of the repeated transmission;

and 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 indexes; or,

the TCI configuration information comprises a plurality of TCI states and a configuration sequence of the plurality of TCI states; or,

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

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

In one possible design, the information of the retransmission is obtained through dynamic configuration of a physical downlink control channel PDCCH, or is obtained through semi-static configuration of high-level signaling; the information of repeated transmission comprises the configuration transmission times of repeated transmission and/or the position information of the first time domain resource and/or the position information of the second time domain resource.

In one possible design, the number of configured transmissions of the repeated transmission is configured by downlink control information DCI, and the number of configured transmissions is indicated in a time domain resource indication field of the DCI.

The data transmission device comprises corresponding hardware structures and/or software modules for executing the functions in order to realize the functions. Those of skill in the art will readily appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software.

The embodiment of the present application may divide the functional units of the data transmission device according to the above method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated in one processing unit. The integrated units described above may be implemented either in hardware or in software program modules. It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice.

Referring to fig. 14, fig. 14 shows another possible structural schematic diagram of the data transmission device involved in 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 method examples described above. The processing unit 1401 is configured to control and manage actions of the data transmission device, e.g., 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 902-905 in fig. 9, steps 1102-1105 in fig. 11, and/or other processes for the techniques described herein. The communication unit 1402 may be used to support communication between a data transmission device and other devices, such as communication with a terminal, communication with a network device, and the like. The data transmission device may further comprise a storage unit 1403 for storing program code and data of the data transmission device.

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

the processing unit 1401 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 corresponding relationship 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 a 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;

the communication unit 1402 is 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 corresponding to the transmission in the second TCI state sequence.

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

wherein the target information includes any one or more of the following:

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

In one possible design, the processing unit 1401 may be specifically configured to determine, when there is no retransmission corresponding to the data after the second time domain resource, a corresponding relationship between the 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 corresponding to each transmission corresponding to the first time domain resource.

In one possible design, the processing unit 1401 may be further configured to determine, according to a polling result of the transmission of the first TCI state sequence in the portion corresponding to the second time domain resource, a corresponding relationship between the 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 determine, when there is no retransmission corresponding to the data after all the second time domain resources, a corresponding relationship between the 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 the portion corresponding to the second time domain resources.

the processing unit 1401 may be specifically configured to determine, according to a polling result of the first TCI state sequence transmitted in the portion corresponding to 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.

The processing unit 1401 may be specifically configured to determine, according to a polling result of the first TCI state sequence in the portion 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;

In one possible design, the communication unit 1402 may be further 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 be specifically 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 poll the at least one TCI state sequentially according to the number of configured transmissions 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 the number of configured transmission times of the repeated transmission, the number of each TCI state in the first TCI state sequence in the at least one TCI state; and 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.

Alternatively, the network device may implement, through the unit, some or all of the steps performed by the data transmission device in the method in the embodiments shown in fig. 3 to 11. It should be understood that the embodiments of the present application are apparatus embodiments corresponding to the embodiments of the method, and descriptions of the embodiments of the method are also applicable to the embodiments of the present application, which are 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 that interact with the network element in the solution provided in the embodiments of the present application. The network device and/or the terminal may perform some or all of the steps in the methods in the embodiments shown in fig. 3 to 11, and specific reference may be made to the related descriptions of the foregoing embodiments, which are not repeated herein.

The present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, and wherein the computer program causes a computer to perform some or all of the steps described in the data transmission apparatus in the method embodiment.

Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps described in the data transmission apparatus of the method embodiments described above. 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 may be embodied 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 (Random Access Memory, RAM), flash Memory, read Only Memory (ROM), erasable programmable Read Only Memory (Erasable Programmable ROM), electrically Erasable Programmable Read Only Memory (EEPROM), registers, 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. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a communication device such as a data transmission device, a network device. The processor and the storage medium may reside as discrete components in a communication device.

It should be understood that the first, second, third and various numbers referred to herein are merely descriptive convenience and are not intended to limit the scope of embodiments of the present application. Herein, "and/or" is merely an association relation describing an association object, and means that three relations may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. The sequence numbers of the above-mentioned processes do not mean the sequence of execution sequence, and the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of skill in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application may be implemented, in whole or in part, in 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, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy Disk, a hard Disk, a magnetic tape), an optical medium (e.g., a digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Claims

1. A data transmission method, comprising:

2. The method according to claim 1, wherein the method further comprises:

Wherein the target information includes any one or more of the following:

3. The method according to claim 1, wherein the method further comprises:

4. The method of claim 3, wherein the determining, according to the polling result of each transmission of the first TCI state sequence corresponding to the first time domain resource, a corresponding relationship between the TCI state in the first TCI state sequence and each transmission of the first time domain resource comprises:

5. The method according to claim 1, wherein the method further comprises:

6. The method of claim 5, wherein the determining, according to the polling result of the transmission of the first TCI state sequence in the portion corresponding to the second time domain resource, a corresponding relationship between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource comprises:

And when the 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.

7. The method of claim 5, wherein if a time domain resource of an nth transmission corresponding to the second time domain resource changes, the nth transmission is transmitted after the second time domain resource, and a TCI state corresponding to the nth transmission remains unchanged;

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

8. The method of claim 5, wherein the nth transmission is transmitted after the second time domain resource if the time domain resource of the nth transmission corresponding to the second time domain resource changes;

9. 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.

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

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

12. The method according to any one of claims 9 to 11, wherein,

the TCI configuration information includes a plurality of TCI indexes; or,

13. The method according to any of claims 1-8, wherein the repeated transmission comprises at least one transmission of an uplink transmission or the repeated transmission comprises at least one transmission of a downlink transmission.

14. The method according to any of claims 1-8, wherein the information of the retransmission is obtained by dynamic configuration of a physical downlink control channel PDCCH, or by semi-static configuration of higher layer signaling; the information of repeated transmission comprises the configuration transmission times of repeated transmission and/or the position information of the first time domain resource and/or the position information of the second time domain resource.

15. The method according to any of claims 1-8, wherein the configured number of transmissions of the repeated transmission is configured by downlink control information DCI, and the configured number of transmissions is indicated in a time domain resource indication field of the DCI.

16. 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, where the first TCI state sequence includes at least one TCI state, and each transmission of the repeated transmission is 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 corresponding relationship 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 a 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, when each transmission is performed, a TCI state corresponding to the transmission in the second TCI state sequence is used.

17. A data transmission device comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-15.

18. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program, which causes a computer to perform the method according to any one of claims 1-15.