WO2021062812A1

WO2021062812A1 - Data transmission method and apparatus, and medium

Info

Publication number: WO2021062812A1
Application number: PCT/CN2019/109738
Authority: WO
Inventors: 方昀; 徐婧; 陈文洪; 史志华; 黄莹沛
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2021-04-08
Also published as: CN113711661A; CN113711661B

Abstract

Embodiments of the present application disclose a data transmission method and apparatus, and a medium. The method comprises: determining a first TCI state sequence for retransmitting data; if a time-domain resource corresponding to the retransmission has changed, determining a second TCI state sequence corresponding to a first time-domain resource according to correspondences between TCI states in the first TCI state sequence and respective transmissions corresponding to the first time-domain resource, wherein the first time-domain resource is a time-domain resource corresponding to retransmission after the time-domain resource had changed; and retransmitting the data over the first time-domain resource according to the second TCI state sequence. The embodiments of the present application are used to determine available TCI states for data transmission after retransmission configuration resources have changed, thus improving the reliability of data transmission.

Description

Data transmission method, equipment and medium

Technical field

This application relates to the field of communication technology, and in particular to a data transmission method, device, and medium.

Background technique

In the communication system, the network side can indicate the repeated transmission of data by configuring the Transmission Configuration Indicator (TCI) state, so that the terminal can use the transmission indicated by the TCI state when the data is repeatedly transmitted. Parameters are used for data transmission to improve the reliability of data transmission. However, the repeated transmission may be interrupted, resulting in a change in the time domain resources used by the terminal when performing the repeated transmission. In the case of interrupted transmission, the terminal cannot determine which TCI state should be used for data transmission.

Summary of the invention

The embodiments of the present application provide a data transmission method, device, and medium, which can determine the available TCI state according to the corresponding relationship between the actual transmission time domain resources and the TCI state sequence when the configuration resources of repeated transmission change. Perform data transfer.

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

Determine the first transmission configuration indication state TCI state sequence used for repeated transmission of data, where the first TCI state sequence includes at least one TCI state, one of each transmission of the repeated transmission and the first TCI state sequence TCI state association;

When the time domain resource corresponding to the repeated transmission changes, it is determined that the first time domain resource corresponds to each transmission corresponding to the TCI state in the first TCI state sequence and the first time domain resource The second TCI state sequence of the first time domain resource is the time domain resource corresponding to repeated transmission after the time domain resource changes, and the second TCI state sequence includes at least one TCI state;

According to the second TCI state sequence, repeated transmission of the data is performed on the first time domain resource, wherein for each transmission, the TCI state corresponding to the transmission in the second TCI state sequence is used.

In a second aspect, embodiments of the present application provide a data transmission device, which has part or all of the functions of realizing the behavior of the terminal in the foregoing method. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above-mentioned functions. In a possible design, the terminal may include a processing unit and a communication unit, and the processing unit is configured to support the terminal to perform corresponding functions in the foregoing method. The communication unit is used to support communication between the terminal and other devices. The terminal may also include a storage unit, which is used to couple with the processing unit and stores programs (instructions) and data necessary for the terminal. Optionally, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory. Wherein, the data transmission device may be a terminal or a network device.

In a third aspect, an embodiment of the present application provides a data transmission device, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and are The configuration is executed by the processor, and the program includes instructions for executing steps in any method in the first aspect of the embodiments of the present application.

In a fourth aspect, an embodiment of the present application provides a communication system, which includes a terminal and/or a network device, and the terminal and/or network device can perform some or all of the steps described in the method of the first aspect. In another possible design, the system may also include other devices that interact with the terminal or network device in the solution provided in the embodiments of the present application.

In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program causes a computer to execute the method described in the first aspect of the embodiments of the present application Some or all of the steps.

In a sixth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute Part or all of the steps described in the method of the first aspect of the application embodiment. The computer program product may be a software installation package.

In the solution provided by the embodiment of the present application, the data transmission device can transmit the corresponding first TCI state sequence according to the configuration and the corresponding relationship between the first time domain resource corresponding to the actual transmission when the time domain resource corresponding to the repeated transmission changes, To determine the second TCI state sequence corresponding to the first time domain resource, and then data transmission can be performed on the first time domain resource according to the second TCI state sequence, so that when the configuration resource for repeated transmission changes, Determining the available TCI state for data transmission helps to improve the reliability of data transmission.

Description of the drawings

Hereinafter, the drawings required to be used in the description of the embodiments or the prior art will be introduced.

FIG. 1 is an architecture diagram of a communication system provided by an embodiment of the present application;

Figure 2a is a schematic diagram of time slot-based repeated transmission provided by an embodiment of the present application;

Figure 2b is a schematic diagram of a TRP-based repeated transmission provided by an embodiment of the present application;

Figure 2c is a schematic diagram of repeated transmission and TCI state mapping provided by an embodiment of the present application;

Figure 2d is another schematic diagram of repeated transmission and TCI state mapping provided by an embodiment of the present application;

FIG. 3 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

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

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

Fig. 5b is a schematic diagram of configuration transmission and TCI state provided by an embodiment of the present application;

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

FIG. 6a is a schematic diagram of the correspondence between another configuration transmission and actual transmission provided by an embodiment of the present application;

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

FIG. 7 is a schematic diagram of interaction of another data transmission method provided by an embodiment of the present application;

FIG. 8a is a schematic diagram of another corresponding relationship between configuration transmission and actual transmission provided by an embodiment of the present application;

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

FIG. 9 is a schematic diagram of interaction of yet another data transmission method provided by an embodiment of the present application;

FIG. 10a is a schematic diagram of another corresponding relationship between configuration transmission and actual transmission provided by an embodiment of the present application;

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

FIG. 11 is a schematic diagram of interaction of yet another data transmission method provided by an embodiment of the present application;

FIG. 12a is a schematic diagram of another corresponding relationship between configuration transmission and actual transmission provided by an embodiment of the present application;

FIG. 12b is another schematic diagram of 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 provided by an embodiment of the present application;

FIG. 14 is a schematic structural diagram of another data transmission device provided by an embodiment of the present application.

Detailed ways

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

It is understandable that the technical solution of this application can be applied to the 5th Generation (5G) system or New Radio (NR) system, Long Term Evolution (Long Term Evolution, abbreviation: LTE) and other systems , I will not list them here. In addition, the technical solution of the present application can be specifically applied to data transmission equipment for data transmission, such as data transmission according to the TCI state. Optionally, the data transmission device may be a terminal or a network device.

Please refer to FIG. 1, which is an architecture diagram of a communication system provided by this application. As shown in FIG. 1, the communication system may include: one or more network devices 101 and one or more terminals 102. FIG. 1 only shows one network device 101 and one terminal 102 as examples. Data transmission can be performed between the network device 101 and the terminal 102. In order to improve the reliability of data transmission, the communication system has introduced repeated transmission technology, namely retransmission technology. The network device 101 and the terminal 102 can transmit data repeatedly, that is, data such as a physical downlink shared channel (PDSCH) carrying the same data through different time slots/TRP/redundancy versions, etc. It is helpful to obtain diversity gain, reduce the probability of false detection such as block error rate (Block Error Rate, BLER), and improve the reliability of data transmission.

In a possible design, the repeated transmission can be performed in multiple time slots, as shown in Figure 2a; it can also be performed on multiple data transmission equipment such as a transmission/reception point (Transmission/reception point, TRP), such as As shown in Figure 2b. For example, for the repetition of multiple time slots, the multiple PDSCHs carrying the same data corresponding to the repeated transmission can be scheduled for transmission on multiple consecutive time slots through DCI, or can be transmitted on multiple non-continuous time slots. The same frequency domain resources can be used. For another example, for the repetition of multiple TRPs, the PDSCH carrying the same data can be transmitted on different TRPs respectively, and the data transmission device can use different transmission parameters such as different beams (the transmission parameters can be indicated by TCI, for example, in this case Multiple TCI states are indicated in the DCI, and each TCI state is used for one repeated transmission). The repetition of multiple TRPs can also be combined with multiple time slots, using non-contiguous time slots for transmission, or using continuous time slots for transmission, using different TRPs for transmission in different time slots, and so on. This helps to improve the reliability of data transmission, and helps ensure the ultra-reliable, low-latency communication (Massive Machine Type Communications, URLLC) low-latency and high-reliability features.

Therefore, in the scenario of repeated transmission, the data transmission device can perform data transmission according to the TCI state corresponding to each repeated transmission, for example, using the transmission parameters corresponding to the TCI state for data transmission. For this repeated transmission, there may be a situation where the configuration transmission resource changes. For example, the repeated transmission may be interrupted, or there may be other situations where the transmission of the configuration transmission resource that causes the repeated transmission changes. If the configured transmission resource changes, the data transmission equipment, such as the above-mentioned terminal and network equipment, cannot determine which TCI state should be used for data transmission, which may cause the data to be incorrectly received or sent. For example, the uplink and downlink configuration of some systems is more flexible, and some important system information may exist at certain moments, which will cause partial interruption of multiple repeated transmissions, as shown in Figures 2c and 2d, the second of the four repeated transmissions The transmission is interrupted by a higher priority system message such as SSB, and the resource for repeated transmission changes. In the case of repeated transmission resource changes such as interruption of transmission, there is no clear TCI mapping method, which causes the data transmission device to be unable to determine the TCI state corresponding to the actual transmission for data transmission. For example, it is impossible to determine which TCI state corresponding TRP should be used. Channel estimation filter parameters to receive data normally transmitted. Therefore, this application can determine the first TCI state sequence corresponding to the configured transmission and the actual transmission corresponding to the first time domain resource when the time domain resource corresponding to the repeated transmission changes, to determine the first time domain resource corresponding to the first time domain resource. Two TCI state sequence, and then data transmission can be carried out according to the second TCI state sequence, so that when the configuration resource of repeated transmission changes, the available TCI state can be determined for data transmission, which can be transmitted in discontinuous Using the correct TCI state in the resource to receive or send data will help improve the reliability of data transmission, and help ensure the correct transmission of URLLC to achieve the goal of low latency and high reliability.

In this application, the network device may be an entity on the network side that is used to send or receive information, such as a base station. The base station may be used to communicate with one or more terminals, or it may be used to communicate with one or more terminals. A base station with partial terminal functions performs communication (for example, communication between a macro base station and a micro base station, such as communication between access points). The base station can be a base transceiver station (Base Transceiver Station, BTS), it can also be an evolved base station (Evolutional Node B, eNB) in a Long Term Evolution (LTE) system, or it can be a 5G system or an NR system. Base station gNB, etc., not listed here. Alternatively, the network device 101 may also be a transmission point (TP), an access point (Access Point, AP), a transmission and receiver point (transmission and receiver point, TRP), a relay device, a central unit ( Central Unit (CU), or other network equipment with base station functions, etc., are not limited in this application.

In this application, a terminal is a device with a communication function, for example, it may be a vehicle-mounted device, a wearable device, a handheld device (such as a smart phone), and so on. The terminal may also be called other names, such as user equipment (User Equipment, UE), user unit, mobile station (mobile station), mobile unit (mobile unit), terminal equipment, etc., which are not limited in this application.

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

In this application, the TCI state sequence may include at least one TCI state arranged in sequence (hereinafter may be referred to as TCI for short). 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 can be understood that the communication system shown in FIG. 1 is only used as an example and does not constitute a limitation to the application. Those of ordinary skill in the art will know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by this application For similar technical issues, the same applies.

The present application discloses a data transmission method and related equipment. The data transmission equipment can determine the available TCI for data transmission when the configuration resource of repeated transmission changes, which helps to improve the reliability of data transmission. A detailed description is given below in conjunction with the drawings.

Please refer to FIG. 3, which is a schematic flowchart of a data transmission method provided by an embodiment of the present application. The method in this embodiment may be specifically applied to the above-mentioned data transmission device, and the data transmission device may be a terminal or a network device. As shown in Figure 3, the data transmission method may include:

301. Determine a first TCI state sequence used for repeated transmission of data.

The first TCI state sequence may include at least one TCI state, and each transmission of the repeated transmission is associated with a TCI state in the first TCI state sequence, that is, each transmission of the repeated transmission corresponds to the first TCI state The TCI state of the corresponding position in the sequence. For example, the first transmission of the repeated transmission (initial transmission, first transmission) is associated with the first TCI state of the first TCI state sequence, and the second transmission of the repeated transmission is associated with the second TCI state of the first TCI state sequence. State association, and so on, that is, 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 of repeated transmission and the nth TCI state may refer to data transmission according to the nth TCI state during the nth transmission, for example, receiving data according to the receiving parameters corresponding to the nth TCI state , For another example, sending data according to the sending parameter corresponding to the nth TCI state, and so on.

The first TCI state sequence may refer to the TCI state sequence corresponding to the repeated transmission configuration transmission, or the repeated transmission configuration transmission resource, that is, the TCI state sequence corresponding to the second time domain resource. Optionally, 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 also be determined by other means.

In a possible design, the data transmission device may obtain TCI configuration information, and then when determining the first TCI state sequence, determine the first TCI state sequence according to the TCI configuration information. Wherein, the TCI configuration information can be used to indicate at least one TCI state, or can be used to indicate the first TCI state sequence. Optionally, the TCI configuration information may include one or more TCI indexes, and/or multiple TCI states and the configuration sequence of the multiple TCI states, and/or the CORESET group to which one or more TCI states belong Index, etc., so that the data transmission device can combine this information to determine the TCI state indicated by the TCI configuration information, determine the sequence of the TCI state indicated by the TCI configuration information, and determine the first TCI state sequence, and so on. Further optionally, the TCI configuration information may include the 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 used to indicate at least one TCI state, and the data transmission device may determine the first state according to the configured transmission times (retransmission times) of repeated transmissions (the number of retransmissions) and the TCI configuration information. A TCI state sequence; for another example, the TCI configuration information may be used to indicate the first TCI state sequence, such as directly carrying the first TCI state sequence, or may include the index corresponding to each TCI of the first TCI state sequence (TCI index Or group index, etc.) and sequence, so that the data transmission device determines the first TCI state sequence and the like according to the index and sequence.

If the data transmission device is a terminal, the network device can send TCI configuration information to the terminal, and the terminal can receive TCI configuration information from the network device. Optionally, the TCI configuration information can also be used to indicate the sequence of the at least one TCI state, so that the data transmission device can determine the sequence of each TCI state included in the first TCI state sequence according to the sequence; or, the data transmission device can use other TCI states. The sequence of each TCI state included in the first TCI state sequence is determined, for example, the sequence of the at least one TCI state is randomly determined, the sequence is determined according to the index of the at least one TCI state, and the sequence is determined according to the at least one TCI state to which the at least one TCI state belongs. The group index of the control resource set CORESET determines the order, etc., which is not limited in this application. Wherein, the configuration transmission times may be carried in the TCI configuration information, may also be carried in other information, and sent to the terminal through other information, or may be determined by the terminal in other ways.

For example, when determining the first TCI state sequence, the data transmission device may sequentially poll at least one TCI state indicated by the TCI configuration information according to the number of retransmissions to obtain the first TCI state sequence. For example, the first TCI state (hereinafter referred to as the first TCI) in the first TCI configuration information is used for the first, j+1, and 2j+1 transmissions, and the second TCI state (hereinafter referred to as the second TCI) is used for The second, j+2, and 2j+2th transmissions, and the third TCI state (hereinafter referred to as the third TCI) is used for the 3rd, j+3, and 2j+3th transmissions, and so on. For example, the number of retransmissions is 4, and the TCI configuration information indicates the first TCI and the second TCI. After polling the first TCI and the second TCI, the first TCI state sequence obtained may be the first TCI, The second TCI, the first TCI, and the second TCI, that is, the first TCI is used for the first and third transmissions, and the second TCI is used for the second and fourth transmissions. For another example, if the number of retransmissions is 6, and the TCI configuration information indicates the first TCI and the second TCI, the first TCI state sequence may be the first TCI, the second TCI, the first TCI, the second TCI, The first TCI and the second TCI, that is, the first TCI is used for the first, third, and fifth transmissions, and the second TCI is used for the second, fourth, and sixth transmissions. For another example, if the number of retransmissions is 6, and the TCI configuration information indicates the first TCI, the second TCI, and the third TCI, the first TCI state sequence may be the first TCI, the second TCI, and the third TCI. , The first TCI, the second TCI, and the third TCI, that is, the first TCI is used for the first and fourth transmissions, the second TCI is used for the second and fifth transmissions, and the third TCI is used for the third time. And the 6th transmission, etc., I will not list them all here.

For example, when determining the first TCI state sequence, the data transmission device may also determine the number of each TCI state in the first TCI state sequence in the at least one TCI state according to the number of retransmissions, and then according to The number of each TCI state determines the first TCI state sequence. For example, it can be based on the first TCI in the first TCI configuration information for the first to k transmissions, the second TCI for the k+1 to 2k transmissions, and the third TCI for the 2k+1 to 3k transmissions. Transmission, and so on. For example, the number of retransmissions is 4, and the TCI configuration information indicates the first TCI and the second TCI. The first TCI state sequence obtained can be the first TCI, the first TCI, the second TCI, and the second TCI, that is, the first TCI. One TCI is used for the first and second transmissions, and the second TCI is used for the third and fourth transmissions. For another example, if the number of retransmissions is 5, and the TCI configuration information indicates the first TCI and the second TCI, the first TCI state sequence can be the first TCI, the first TCI, the first TCI, the second TCI, and the first TCI. Two TCI, that is, the first TCI is used for the 1-3 transmissions, and the second TCI is used for the 4-5 transmissions. For another example, if the number of retransmissions is 6, and the TCI configuration information indicates the first TCI, the second TCI, and the third TCI, the first TCI state sequence may be the first TCI, the first TCI, the second TCI, The second TCI, the third TCI, and the third TCI, that is, the first TCI is used for the 1-2 transmissions, the second TCI is used for the 3-4 transmissions, and the third TCI is used for the 5-6 transmissions, etc. Etc. I will not list them here.

302. When the time domain resource corresponding to the repeated transmission changes, determine the corresponding relationship between the TCI state in the first TCI state sequence and the first time domain resource for each transmission corresponding to the first time domain resource. The second TCI state sequence.

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

In a possible design, the change of the second time domain resource corresponding to the repeated transmission may refer to the change of some resources of the second time domain resource (for example, the resource corresponding to a certain configuration transmission or a certain number of configuration transmissions). , Or may refer to all resource changes of the second time domain resource; it may also be referred to as the configuration transmission being interrupted, the configuration transmission resource being occupied, and so on. Optionally, the change may be caused by a variety of situations, such as a certain configuration transmission being interrupted, such as being interrupted by a higher priority system information, resulting in a change, or the configuration transmission resource corresponding to a certain configuration transmission being occupied, such as being prioritized Higher system information occupancy, or active adjustment of the time-domain resources for repeated transmission, or other situations where transmission resources change, are not limited in this application.

In a possible design, the data transmission device may determine the correspondence between the TCI state in the first TCI state sequence and the first time domain resource corresponding to each transmission according to the first TCI state sequence and target information. Wherein, the target information can be used to indicate the actually used transmission resource, or can be used to indicate the location of each transmission corresponding to the first time domain resource, and the data transmission device can determine each transmission resource corresponding to the first time domain resource according to the target information. transmission. Optionally, the target information includes any one or more of the following: the location information of the first time domain resource, such as the location information of each transmission corresponding to the first time domain resource, and the transmission corresponding to the first time domain resource The number of times, the location information of the time domain resource corresponding to the first transmission in the second time domain resource (suppose it is recorded as the third time domain resource), the number of configured transmissions for this repeated transmission, and the location information of the changed time domain resource; The second time domain resource is the time domain resource corresponding to the repeated transmission before the time domain resource is changed, and the number of transmissions corresponding to the first time domain resource is less than or equal to the configured transmission number of the repeated transmission. Optionally, the third time domain resource may be a time domain resource configured directly or indirectly. The location information may include any one or more of the start location, length, and end location of the resource, for example, including the start location and length, and for example, include the start location and end location, and so on. If the data transmission device is a terminal, the target information may be sent to the terminal by the network device, or may be determined by the terminal in other ways.

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 can be called the number of transmissions after the time domain resource changes, and it can also be called the number of actual transmissions, the number of actual retransmissions, etc. Wait. The number of configured transmissions for repeated transmission is the number of transmissions corresponding to the configuration transmission, or is called the number of transmissions corresponding to the second time domain resource, or can be called the number of transmissions before the time domain resource changes, etc. It can also be called the number of repeated transmissions. Transmission times, configuration retransmission times, initial retransmission times, etc.

In a possible design, when determining the corresponding relationship, the data transmission device may determine the first TCI state sequence according to the polling result of each transmission corresponding to the first TCI state sequence in the first time domain resource The corresponding relationship between the TCI state and each transmission corresponding to the first time domain resource, and then the second TCI state sequence can be determined according to the corresponding relationship. That is, the data transmission device can poll the first TCI state sequence on each actual transmission of repeated transmissions, and directly map each transmission of the second time domain resource according to the first TCI state sequence. Wherein, the TCI state corresponding to each transmission corresponding to the second time domain resource and the TCI state corresponding to each transmission corresponding to the first time domain resource are both associated with the number of the transmission. The second TCI state sequence may be the same as the first TCI state sequence, or the second TCI state sequence may include part of the first TCI state sequence, for example, composed of the first i TCI states in the first TCI state sequence The TCI state sequence, i may be the same as the number of transmissions corresponding to the first time domain resource.

For example, optionally, when the data transmission device determines the corresponding relationship, it may be in the first time domain according to the first TCI state sequence when there is no repeated transmission of the data after the second time domain resource. The polling result of each transmission corresponding to the resource determines the correspondence between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource. That is to say, the data transmission device may poll on each actual transmission of repeated transmissions according to the first TCI state sequence after configuring the resource location corresponding to the transmission when no actual transmission occurs to determine the second TCI state sequence.

In a possible design, when determining the correspondence relationship, the data transmission device can determine the first TCI state sequence according to the polling result of the transmission corresponding to the second time domain resource of the first TCI state sequence Correspondence between the TCI state and each transmission corresponding to the first time domain resource. In other words, the data transmission device can also poll the first TCI state sequence on the repeated transmission configuration transmission, and map each transmission of the first time domain resource according to the first TCI state sequence, that is, according to the first TCI state sequence and The configuration transmission of repeated transmissions, such as the mapping relationship on partial configuration transmission, determines the mapping relationship between the first TCI state sequence and each transmission of the first time domain resource. The second TCI state sequence may be different from the first TCI state sequence. Wherein, the partial transmission is repeated transmission corresponding to the unchanged time domain resource in the second time domain resource, and the time domain resource corresponding to the partial transmission corresponds to the location of the first time domain resource.

For example, optionally, when the data transmission device determines the corresponding relationship, when there is no repeated transmission of the data after the second time domain resource, the data transmission device may be in the second time domain resource according to the first TCI state sequence. According to the polling result of the corresponding partial transmission, the corresponding relationship between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource is determined. In other words, when data such as PDSCH is no longer actually transmitted after all the configured transmission resources of repeated transmission, the first TCI state sequence can be polled on the part of the repeated transmission of the configured transmission, that is, the time domain resource is excluded from the configured transmission. The configuration transmission other than the changed configuration transmission is polled, and part of the polled transmission and the actual transmission are in a one-to-one correspondence with the location of the time domain resource.

For 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 nth transmission corresponds to The TCI state can remain unchanged. Furthermore, when the data transmission device determines the corresponding relationship, it may determine the first TCI state sequence according to the polling result of the first TCI state sequence in the part of the second time domain resource corresponding to the transmission and the TCI state corresponding to the nth transmission. A corresponding relationship between the TCI state in the TCI state sequence and each transmission corresponding to the first time domain resource. That is to say, if the nth configuration transmission (the nth transmission corresponding to the number of configuration transmissions) in the configuration transmission is suspended, and the nth configuration transmission is transmitted after all the configuration transmission resources of the repeated transmission, the first TCI state The sequence can be polled on part of the repeated transmission of the configuration transmission to obtain the second TCI state sequence. The actual number of transmission times and time domain resources corresponding to the nth configuration transmission are changed, but the TCI configuration remains unchanged.

For another example, optionally, if the time domain resource of the nth transmission in the second time domain resource changes, the nth transmission may be transmitted after the second time domain resource. Further, when the data transmission device determines the corresponding relationship, it may be based on the polling result of the first TCI state sequence transmitted in the portion corresponding to the second time domain resource, and the first TCI state sequence in the round of the transmission set. According to the query result, the corresponding relationship between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource is determined. Wherein, the transmission set includes repeated transmissions corresponding to the data after the second time domain resource, and the transmission set includes the nth transmission. That is to say, if the nth configuration transmission is suspended, and the nth configuration transmission is transmitted after all the configuration transmission resources of the repeated transmission, the supplementary transmission after all the configuration transmission resources of the repeated transmission is the transmission set, the first TCI state The sequence may be polled on the transmission set, and the first TCI state sequence may be polled on the repeated transmission partial configuration transmission to obtain the second TCI state sequence.

303. Perform repeated 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, that is, the actual transmission resource, the data can be repeatedly transmitted on the first time domain resource according to the second TCI state sequence, that is, according to the first time domain resource. For the TCI state corresponding to each transmission corresponding to a time domain resource, data transmission is performed on the time domain resource corresponding to the transmission (that is, the actual transmission resource of the transmission), including the sending or receiving of 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; or, 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 a possible design, the repeatedly transmitted information is obtained through dynamic configuration of a physical downlink control channel (Physical Downlink Control Channel, PDCCH), or obtained through semi-static configuration of high-level signaling. For example, when the data transmission device is a terminal, the network device can send the PDCCH carrying the repeated transmission information to the terminal, and the terminal can receive the PDCCH; another example is the network device can send the high-level signaling carrying the repeated transmission information to the terminal, and the terminal This high-level signaling can be received. Optionally, the repeated transmission information includes the number of configured transmissions for repeated transmission and/or the location information of the first time domain resource and/or the location information of the second time domain resource. The location information of the first time domain resource may indicate the location information of each transmission corresponding to the first time domain resource and/or the location information of the time domain resource that has changed relative to the second time domain resource. The location information of the domain resource may indicate the location information of each transmission corresponding to the second time domain resource, the location information of the first transmission corresponding to the second time domain resource, and/or the location information of the changed time domain resource, and so on.

In a possible design, the configured transmission times of the repeated transmission may be obtained through Downlink Control Information (DCI) configuration. For example, the network device may send the DCI carrying the configured transmission times to the terminal, and the terminal may receive The DCI. Optionally, the number of configured transmissions of the repeated transmission may be indicated by the 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 also be carried in the DCI.

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

In a possible design, the time domain resource corresponding to the repeated transmission, that is, the first time domain resource or the second time domain resource, can be in one time slot, or across time slots, or over multiple time slots. This application is not limited.

In a possible design, the TCI may include quasi-co-location (QCL), and the data transmission device may determine the beam for data transmission according to the indication of the QCL, for example, the network device may notify through the indication of the QCL The terminal is performing data transmission on the receiving beam, and for example, the network device can determine the sending beam according to the QCL and so on. Optionally, the QCL can be indicated in the following ways: instructed by RRC configuration, or configured by RRC and activated by MAC-CE, or configured by RRC and activated by MAC-CE and indicated by DCI. For the MAC-CE-based indication mode, a set of TCI states can be configured by the higher layer, and the corresponding QCL reference can be determined according to each TCI state. For the DCI-based indication mode, the acquisition of QCL information can go through three steps: RRC configuration, MAC-CE activation, and DCI indication. For example, taking a data transmission device as a terminal as an example, for multiple TRP repeated transmissions, the difference in the spatial position of different TRPs will lead to differences in large-scale channel parameters on the receiving link. The terminal can receive data from different TRPs. Using different receiving parameters such as channel estimation filter parameters, in order to simplify the terminal to adjust the channel estimation filter parameters every time it receives data, the network device can inform the terminal of the receiving beam when receiving data through the instruction of QCL, so as to improve the data transmission. reliability.

In a possible design, after determining the second TCI state sequence, the data transmission device may also send the second TCI state sequence to the corresponding device for data transmission. For example, when the data transmission device is a terminal, The second TCI state sequence can be sent to the network device for data transmission, and if the data transmission device is a network device, the second TCI state sequence can be sent to the terminal for data transmission, thereby helping to save the system Determine the TCI overhead corresponding to the actual transmission.

In other optional embodiments, the data transmission device may also only determine the TCI state corresponding to the actual transmission resource corresponding to the changed repeated transmission, and the state of other configured transmission resources after the changed repeated transmission corresponding to the configured transmission resource. For the corresponding TCI state, the previous repeated transmission of the fourth time domain resource can still use the corresponding TCI state in the first TCI state sequence for data transmission, so as to improve data transmission efficiency.

In this embodiment, the data transmission device can determine the first time domain resource corresponding to the actual transmission according to the correspondence between the first TCI state sequence corresponding to the configured transmission and the first time domain resource corresponding to the actual transmission when the time domain resource corresponding to the repeated transmission changes. A second TCI state sequence corresponding to a time domain resource, and then data transmission is performed on the first time domain resource according to the second TCI state sequence, so that the data transmission device can be determined when the configuration resource for repeated transmission changes The available TCI state for data transmission helps to improve the reliability of data transmission.

Please refer to FIG. 4, which is a schematic diagram of interaction of a data transmission method provided by an embodiment of the present application. The method in this embodiment may be specifically applied to the above-mentioned data transmission device, and the data transmission device may be a terminal or a network device. In this embodiment, the data transmission device may poll on each actual transmission of the repeated transmission based on the first TCI state sequence corresponding to the repeated transmission configuration to determine the second TCI state sequence corresponding to the actual transmission to perform data transmission. As shown in Figure 4, the data transmission method may include:

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

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

Wherein, the TCI configuration information can be used to indicate at least one TCI state, or can be used to indicate the first TCI state sequence, which will not be repeated here. For example, the TCI configuration information indicates TCI0 and TCI1, and the number of configured transmissions is 4. It is assumed that the first TCI state sequence determined by the terminal is {TCI 0, TCI 1, TCI 0, TCI 1}.

Optionally, the terminal may also determine the first TCI state sequence in other ways. For the description of steps 401 to 402, reference may be made to the related description of step 301 in the embodiment shown in FIG. 3, which will not be repeated here.

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

404. The terminal determines a second TCI state sequence corresponding to the first time domain resource according to the corresponding relationship 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 can, according to the polling result of each transmission corresponding to the first TCI state sequence in the first time domain resource, sequentially change the TCI state in the first TCI state sequence Associate (correspond, map) with each transmission corresponding to the first time domain resource to determine the TCI state corresponding to each transmission corresponding to the first time domain resource, that is, determine the second TCI corresponding to the first time domain resource State sequence, the TCI state of each transmission of the repeated transmission corresponds to the number of transmission times of the repeated transmission. If the terminal determines the configured transmission resource according to the network side configuration, that is, the second transmission of the second time domain resource conflicts with system information, and the configured second transmission does not carry out actual data such as PDSCH transmission, the terminal can transmit the corresponding according to the configuration The TCI state determines the TCI state corresponding to the actual transmission.

If the actual transmission corresponding to the repeated transmission exists after the second time domain resource, that is, after all the configured transmission resources, as shown in Figure 5a, the actual transmission times corresponding to the repeated transmission and the configured transmission times are the same, and the ath transmission in the configuration transmission is The TCI state is the same as the TCI state of the ath transmission actually transmitted, and the terminal can directly map the TCI state corresponding to the actual transmission according to the TCI state corresponding to the configured transmission. The arrows in Figure 5a can be used to indicate the TCI correspondence. In this example, the TCI state corresponding to the configuration transmission can be as shown in Figure 5b, and the corresponding first TCI state sequence is {TCI 0, TCI 1, TCI 0, TCI 1}; the TCI state corresponding to the actual transmission can be As shown in Figure 5c, 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 (no longer occurs) after the second time domain resource, that is, after all the configured transmission resources, as shown in Figure 6a, the actual transmission times corresponding to the repeated transmission are less than the configured transmission times, The TCI state of the ath transmission is the same as the TCI state of the ath transmission actually transmitted, and the terminal can determine the TCI state corresponding to the actual transmission according to the TCI state corresponding to the configured transmission. In this example, the TCI state corresponding to the configuration transmission can be as shown in Figure 5b, and the corresponding first TCI state sequence is {TCI 0, TCI 1, TCI 0, TCI 1}; the TCI state corresponding to the actual transmission can be As shown in Figure 6b, the corresponding second TCI state sequence is {TCI 0, TCI 1, TCI 0}.

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

For the description of this step 405, refer to the related description of step 303 in the embodiment shown in FIG. 3, which will not be repeated here.

After determining the second TCI state sequence, the terminal can perform data transmission in the first time domain resource based on the second TCI state sequence. Optionally, the network device may also determine the actual transmission corresponding to the repeated transmission, that is, the TCI state corresponding to the first time domain resource based on the foregoing method, such as the foregoing second TCI state sequence, which may then be based on the second TCI state sequence. The first time domain resource performs data transmission. For example, the terminal may send data in the first time domain resource based on the second TCI state sequence, and the network device may receive data from the terminal in the first time domain resource based on the second TCI state sequence; another example is the network device may be based on the second TCI state sequence. The second TCI state sequence sends data in the first time domain resource, and the terminal may receive data from the network device 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, thereby helping to save the system's overhead for determining the actual transmission corresponding TCI state , I won’t go into details here.

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 the TCI state information used in the actual transmission, and then it can Data transmission is performed on the actual transmission resources according to the TCI state used in the actual transmission, so that when the configuration resource of repeated transmission changes, the TCI state that the data transmission device can use for data transmission can be determined, which helps to improve the data. Reliability of transmission.

Please refer to FIG. 7, which is a schematic diagram of interaction of another data transmission method provided by an embodiment of the present application. In this embodiment, after all transmission resources are configured, there is no actual transmission corresponding to repeated transmission. The data transmission device can poll on the repeated transmission configuration transmission based on the first TCI state sequence corresponding to the repeated transmission configuration transmission to determine the actual transmission. The corresponding second TCI state sequence is transmitted for data transmission. As shown in Figure 7, the data transmission method may include:

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

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

Wherein, the TCI configuration information can be used to indicate at least one TCI state, or can be used to indicate the first TCI state sequence, which will not be repeated here. For example, the TCI configuration information indicates TCI0 and TCI1, the number of configured transmissions is 4, and the first TCI state sequence determined by the terminal is {TCI 0, TCI 1, TCI 0, TCI 1}.

Optionally, the terminal may also determine the first TCI state sequence in other ways. For the description of steps 701 to 702, reference may be made to the related description of the foregoing embodiment, which will not be repeated here.

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

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

Wherein, the partial transmission is repeated transmission corresponding to the unchanged time domain resource in the second time domain resource, and the time domain resource corresponding to the partial transmission corresponds to the location of the first time domain resource. As shown in Figure 8a, when data such as the PDSCH is no longer actually transmitted after all the configured transmission resources of repeated transmission, the first TCI state sequence can be polled on the part of the repeated transmission of the configured transmission. The part of the polled transmission and The actual transmission has a one-to-one correspondence with the location of the time domain resource. In this example, the TCI state corresponding to the configuration transmission can be as shown in Figure 5b, and the corresponding first TCI state sequence is {TCI 0, TCI 1, TCI 0, TCI 1}; the TCI state corresponding to the actual transmission can be As shown in Figure 8b, the corresponding second TCI state sequence is {TCI 0, TCI 0, TCI 1}.

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

For the description of this step 705, reference may be made to the relevant description of the foregoing embodiment, which is not repeated here.

After determining the second TCI state sequence, the terminal can perform data transmission in the first time domain resource based on the second TCI state sequence. Optionally, the network device may also determine the actual transmission corresponding to the repeated transmission, that is, the second TCI state sequence corresponding to the first time domain resource based on the foregoing method, and may further determine whether the second TCI state sequence is in the first time domain resource based on the second TCI state sequence. Perform data transfer. 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 will not be repeated here.

In this embodiment, when the time domain resource corresponding to the repeated transmission changes, and there is no actual transmission corresponding to the repeated transmission after all the configured transmission resources, the terminal can perform the partial configuration transmission of the repeated transmission based on the first TCI state sequence. Polling to obtain the TCI state information used in actual transmission, and then data transmission can be performed on the actual transmission resources according to the TCI state used in actual transmission, so that the data transmission equipment can be determined when the configuration resource of repeated transmission changes. The available TCI state for data transmission helps to improve the reliability of data transmission.

Please refer to FIG. 9, which is a schematic diagram of interaction of yet another data transmission method provided by an embodiment of the present application. In this embodiment, after all configured transmission resources, there is actual transmission corresponding to repeated transmission, and the data transmission device can poll on the repeated transmission configuration transmission based on the first TCI state sequence corresponding to the repeated transmission configuration transmission, and the changed The corresponding TCI state in the first TCI state sequence is transmitted for the nth time to determine the second TCI state sequence corresponding to the actual transmission for data transmission. As shown in Figure 9, the data transmission method may include:

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

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

Optionally, the terminal may also determine the first TCI state sequence in other ways. For the description of steps 901-902, reference may be made to the related description of the foregoing embodiment, which will not be repeated here.

903. When the time domain resource of the nth transmission corresponding to the second time domain resource changes, determine to transmit the nth transmission after the second time domain resource, and the TCI state corresponding to the nth transmission remains 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 Figure 10a, in this embodiment, n is 2, the TCI state of the second transmission (second configuration transmission) corresponding to the configuration transmission is TCI 1, and the second transmission corresponding to the configuration transmission corresponds to the actual transmission For the fourth transmission, the TCI state corresponding to the fourth transmission of the actual transmission is TCI 1. That is, the actual transmission times and time domain resources corresponding to the nth configuration transmission change, but the TCI configuration remains unchanged.

904. The terminal determines the TCI state in the first TCI state sequence and the TCI state in the first TCI state sequence according to the polling result of the partial transmission of the first TCI state sequence corresponding to the second time domain resource and the TCI state corresponding to the nth transmission. The corresponding relationship of each transmission corresponding to the first time domain resource.

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

Wherein, the partial transmission is repeated transmission corresponding to the unchanged time domain resource in the second time domain resource, and the time domain resource corresponding to the partial transmission corresponds to the location of the first time domain resource. As shown in Figure 10a, when data such as PDSCH is actually transmitted after all the configured transmission resources for repeated transmissions, the first TCI state sequence can be polled on the part of the repeated transmissions to obtain the corresponding data for the first three transmissions of the actual transmission. The TCI state is TCI 0, TCI 0, TCI 1. The part of the polled transmission and the actual transmission correspond to the position of the time domain resource one-to-one, and can be combined with the corresponding TCI state of the second transmission when the time domain resource changes. That is, TCI 1, to determine the second TCI state sequence. In this example, the TCI state corresponding to the configuration transmission can be as shown in Figure 5b, and the corresponding first TCI state sequence is {TCI 0, TCI 1, TCI 0, TCI 1}; the TCI state corresponding to the actual transmission can be As shown in Figure 10b, the corresponding second TCI state sequence is {TCI 0, TCI 0, TCI 1, TCI 1}.

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

For the description of this step 906, reference may be made to the related description of the foregoing embodiment, which is not repeated here.

After determining the second TCI state sequence, the terminal can perform data transmission in the first time domain resource based on the second TCI state sequence. Optionally, the network device may also determine the actual transmission corresponding to the repeated transmission, that is, the second TCI state sequence corresponding to the first time domain resource based on the foregoing method, and may further determine whether the second TCI state sequence corresponds to the first time domain resource Perform data transfer. 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 will not be repeated here.

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 configured transmission resources, the terminal can configure the transmission on the part of the repeated transmission based on the first TCI state sequence. Inquiry, and the corresponding TCI state in the first TCI state sequence of the nth transmission of the change, obtain the TCI state information used in the actual transmission, and then perform data transmission on the actual transmission resources according to the TCI used in the actual transmission. In this way, it is possible to determine the TCI state that the data transmission device can use for data transmission when the configuration resource for repeated transmission changes, which helps to improve the reliability of data transmission.

Please refer to FIG. 11, which is a schematic diagram of interaction of another data transmission method provided by an embodiment of the present application. In this embodiment, the actual transmission corresponding to the repeated transmission exists after all the configured transmission resources, and the data transmission device can poll on the configured transmission of the repeated transmission based on the first TCI state sequence corresponding to the configured transmission of the repeated transmission, and based on the first TCI state sequence. A TCI state sequence is polled on the transmission set (which may include repeated transmissions after all configured transmission resources) to determine the second TCI state sequence corresponding to the actual transmission for data transmission. As shown in FIG. 11, the data transmission method may include:

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

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

Optionally, the terminal may also determine the first TCI state sequence in another manner. For the description of steps 1101-1102, reference may be made to the related description of the foregoing embodiment, which will not be repeated here.

1103. When the time domain resource of the nth transmission corresponding to the second time domain resource changes, determine to transmit the nth transmission after the second time domain resource.

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, according to the time domain The resource is changed and repeatedly transmitted to obtain a transmission set, and the transmission set includes repeated transmissions corresponding to the data after the second time domain resource. As shown in FIG. 12a, in this embodiment, n is 2, and the transmission set includes the second transmission.

1104. The terminal determines, according to the polling result of the first TCI state sequence in the part of the transmission corresponding to the second time domain resource, and the polling result of the first TCI state sequence in the transmission set, determine the value in the first TCI state sequence Correspondence between the TCI state and each transmission corresponding to the first time domain resource.

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

Wherein, the partial transmission is repeated transmission corresponding to the unchanged time domain resource in the second time domain resource, and the time domain resource corresponding to the partial transmission corresponds to the location of the first time domain resource. As shown in Figure 12a, when data such as PDSCH is actually transmitted after all the configured transmission resources for repeated transmissions, the first TCI state sequence can be polled on the part of the repeated transmissions to obtain the corresponding data for the first three transmissions of the actual transmission. The TCI state is TCI 0, TCI 0, TCI 1. The part of the polled transmission corresponds to the position of the actual transmission in the time domain resource one-to-one, and can be combined with the polling of the first TCI state sequence in the transmission set, and the set includes The TCI state corresponding to the second transmission, that is, the first TCI of the first TCI state sequence, TCI0, is used to determine the second TCI state sequence. In this example, the TCI state corresponding to the configuration transmission can be as shown in Figure 5b, and the corresponding first TCI state sequence is {TCI 0, TCI 1, TCI 0, TCI 1}; the TCI state corresponding to the actual transmission can be As shown in Figure 12b, the corresponding second TCI state sequence is {TCI 0, TCI 0, TCI 1, TCI 0}.

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

For the description of this step 1106, reference may be made to the relevant description of the foregoing embodiment, which is not repeated here.

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 configured transmission resources, the terminal can configure the transmission on the part of the repeated transmission based on the first TCI state sequence. Inquiry, and polling on the nth transmission that changes based on the first TCI state sequence to obtain the TCI state information used in the actual transmission, and then data transmission can be performed on the actual transmission resources according to the TCI state used in the actual transmission. In this way, it is possible to determine the TCI state that the data transmission device can use for data transmission when the configuration resource for repeated transmission changes, which helps to improve the reliability of data transmission.

It can be understood that the foregoing method embodiments are all examples of the data transmission method of the present application, and the description of each embodiment has its own focus. For parts that are not described in detail in an embodiment, reference may be made to related descriptions of other embodiments.

Refer to FIG. 13, which is a schematic structural diagram of a data transmission device according to an embodiment of the present application. The data transmission device can be a terminal or a network device. As shown in FIG. 13, the data transmission device 1300 may include: a processor 1310, a memory 1320, a communication interface 1330, and one or more programs 1321, where the one or more programs 1321 are stored in the memory 1320 And is configured to be executed by the processor 1310, and the program includes instructions for executing the following steps:

Repeated transmission of the data on the first time domain resource according to the second TCI state sequence through the communication interface 1330, wherein for each transmission, the second TCI state sequence corresponding to the transmission is used for each transmission The TCI state.

In a possible design, the instructions in the program are also used to perform the following operations:

According to the first TCI state sequence and target information, the corresponding relationship between the TCI state in the first TCI state sequence and the first time domain resource corresponding to each transmission is determined, and the target information is used to indicate the first The location of each transmission corresponding to the time domain resource;

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

The location information of the first time domain resource, the number of transmissions corresponding to the first time domain resource, the location information of the time domain resource corresponding to the first transmission in the second time domain resource, and the number of configured transmissions for 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 number of transmissions corresponding to the first time domain resource is less than or equal to the configured number of transmissions.

According to the polling result of each transmission of the first TCI state sequence corresponding to the first time domain resource, determine the TCI state in the first TCI state sequence and each time the first time domain resource corresponds Correspondence of transmission;

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

In a possible design, in the polling result of each transmission corresponding to the first time domain resource according to the first TCI state sequence, determine the TCI state and the TCI state in the first TCI state sequence. When the corresponding relationship of each transmission corresponding to the first time domain resource, the instructions in the program are also used to perform the following operations:

When there is no repeated transmission corresponding to the data after the second time domain resource, determine the first TCI according to the polling result of each transmission corresponding to the first TCI state sequence in the first time domain resource The corresponding relationship between the TCI state in the state sequence and each transmission corresponding to the first time domain resource.

According to the polling result of the partial transmission of the first TCI state sequence corresponding to the second time domain resource, determine the correspondence between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource relationship;

Wherein, the second time domain resource is a time domain resource corresponding to repeated transmission before the time domain resource is changed, and the partial transmission is a repeated transmission corresponding to a time domain resource that has not changed in the second time domain resource. And the time domain resource corresponding to the partial transmission corresponds to the position of the first time domain resource.

In a possible design, after the polling result of the partial transmission of the first TCI state sequence corresponding to the second time domain resource, the TCI state and the all data in the first TCI state sequence are determined. When the corresponding relationship of each transmission corresponding to the first time domain resource is described, the instructions in the program are also used to perform the following operations:

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

In a 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 The TCI state corresponding to the nth transmission remains unchanged;

According to the polling result of the partial transmission of the first TCI state sequence corresponding to the second time domain resource, it is determined that the TCI state in the first TCI state sequence corresponds to the first time domain resource Each time the corresponding relationship is transmitted, the instructions in the program are also used to perform the following operations:

According to the polling result of the partial transmission of the first TCI state sequence in the second time domain resource and the TCI state corresponding to the nth transmission, determine the TCI state and the TCI state in the first TCI state sequence The corresponding relationship of each transmission corresponding to the first time domain resource.

In a 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;

According to the polling result of the first TCI state sequence in the part of the transmission corresponding to the second time domain resource, and the polling result of the first TCI state sequence in the transmission set, determine the first TCI state sequence The corresponding relationship between the TCI state of and each transmission corresponding to the first time domain resource;

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

In a possible design, the instructions in the program are also used to perform the following operations: obtaining TCI configuration information, where the TCI configuration information is used to indicate at least one TCI state;

When the first TCI state sequence used for repeated transmission of data is determined, the instructions in the program are also used to perform the following operations: determine the first TCI state sequence according to the TCI configuration information.

In a possible design, when the first TCI state sequence is determined according to the TCI configuration information, the instructions in the program may be used to perform the following operations:

The at least one TCI state is polled in sequence according to the configured transmission times of the repeated transmission to obtain the first TCI state sequence.

In a possible design, when the first TCI state sequence is determined according to the TCI configuration information, the instructions in the program are further used to perform the following operations:

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

According to the number of each TCI state, the first TCI state sequence is determined.

In a possible design, the TCI configuration information includes multiple TCI indexes; or,

The TCI configuration information includes multiple TCI states and a configuration sequence of the multiple TCI states; or,

The TCI configuration information includes the group index of the control resource set CORESET to which the multiple TCI states belong.

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

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

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

In order to realize the above-mentioned functions, the data transmission device includes hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software.

The embodiment of the present application may divide the data transmission device into functional units according to the foregoing method examples. For example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The above-mentioned integrated unit can be realized in the form of hardware or software program module. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

Please refer to FIG. 14, which shows another possible structural schematic diagram of the data transmission device involved in the foregoing embodiment. Referring to FIG. 14, the data transmission device 1400 may include: a processing unit 1401 and a communication unit 1402. Among them, these units can perform the corresponding functions of the data transmission device in the foregoing method example. The processing unit 1401 is used to control and manage the actions of the data transmission device. For example, the processing unit 1401 is used to support the data transmission device to perform steps 301 to 302 in FIG. 3, steps 402 to 404 in FIG. 4, and steps in FIG. 702 to 704, steps 902-905 in FIG. 9, steps 1102-1105 in FIG. 11, and/or other processes used in the techniques described herein. The communication unit 1402 may be used to support communication between the data transmission device and other devices, such as communication with a terminal, communication with a network device, and so on. The data transmission device may also include a storage unit 1403 for storing program codes 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 used to determine a first transmission configuration indication state TCI state sequence used for repeated transmission of data, where the first TCI state sequence includes at least one TCI state, and each transmission of the repeated transmission and the One TCI state in the first TCI state sequence is associated;

The processing unit 1401 may also be configured to, when the time domain resource corresponding to the repeated transmission changes, determine the corresponding relationship between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource. A second TCI state sequence corresponding to the first time domain resource, the first time domain resource is a time domain resource corresponding to repeated transmission after the time domain resource changes, and the second TCI state sequence includes at least one TCI state;

The communication unit 1402 may be configured to perform repeated transmissions of the data on the first time domain resource according to the second TCI state sequence, wherein each time the transmission is performed, the second TCI state sequence is used with the same time. Transmit the corresponding TCI state.

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

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

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

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

In a possible design, the processing unit 1401 may also be configured to determine the TCI state in the first TCI state sequence according to the polling result of the first TCI state sequence corresponding to the part of the second time domain resource transmission The corresponding relationship of each transmission corresponding to the first time domain resource;

In a possible design, the processing unit 1401 may be specifically configured to perform data in the second time domain according to the first TCI state sequence when there is no repeated transmission of the data after all the second time domain resources. The polling result of the partial transmission corresponding to the resource determines the correspondence 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 the first TCI state sequence according to the polling result of the partial transmission of the first TCI state sequence corresponding to the second time domain resource and the TCI state corresponding to the nth transmission The corresponding relationship between the TCI state in the 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 the polling result of the first TCI state sequence in the partial transmission corresponding to the second time domain resource and the polling result of the first TCI state sequence in the transmission set The corresponding relationship between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource;

In a possible design, the communication unit 1402 may also be used 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 a possible design, the processing unit 1401 may be specifically configured to sequentially poll the at least one TCI state according to the configured transmission times of the repeated transmission to obtain the first TCI state sequence.

In a possible design, the processing unit 1401 may be specifically configured to determine the number of each TCI state in the at least one TCI state in the first TCI state sequence according to the configured transmission times of the repeated transmission. Number; the first TCI state sequence is determined according to the number of each type of 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 involved in the embodiment of the present application may be the data transmission device shown in FIG. 13.

Optionally, the network device may implement part or all of the steps performed by the data transmission device in the method in the embodiment shown in FIG. 3 to FIG. 11 through the foregoing unit. It should be understood that the embodiment of the present application is a device embodiment corresponding to the method embodiment, and the description of the method embodiment is also applicable to the embodiment of the present application, and will not be repeated here.

This application also provides a communication system, which includes the aforementioned terminal and/or network device. Optionally, the system may also include other devices that interact with the foregoing network elements in the solution provided in the embodiment of the present application. The network device and/or the terminal can perform some or all of the steps in the method in the embodiment shown in FIG. 3 to FIG. 11. For details, reference may be made to the relevant description of the above embodiment, which will not be repeated here.

The embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the data in the above-mentioned method embodiment. Part or all of the steps described by the transmission device.

The embodiment of the present application also provides a computer program product. The computer program product includes a non-transitory computer-readable storage medium storing a computer program. The computer program is operable to cause a computer to execute the data in the above-mentioned method embodiment. Part or all of the steps described by the transmission device. The computer program product may be a software installation package.

The steps of the method or algorithm described in combination with the disclosure of this application can be implemented in a hardware manner, or can be implemented in a manner in which a processor executes software instructions. Software instructions can be composed of corresponding software modules, which can be stored in random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read Only Memory, ROM), and erasable programmable read-only memory ( Erasable Programmable ROM (EPROM), Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium may also be an integral part of the processor. The processor and the storage medium may be located in the ASIC. In addition, the ASIC may be located in communication devices such as data transmission equipment and network equipment. Of course, the processor and the storage medium may also exist as discrete components in the communication device.

It can be understood that the first, second, third, and various numerical numbers involved in this specification are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application. "And/or" in this article is only an association relationship describing the associated objects, which means that there can be three kinds of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone These three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship. The size of the sequence number of the foregoing processes does not mean the order of execution. The execution order of the processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those skilled in the art should be aware that, in one or more of the foregoing examples, the functions described in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. 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 a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as 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 or data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a Digital Video Disc (DVD)), or a semiconductor medium (for example, a Solid State Disk (SSD)) )Wait.

Claims

A data transmission method, characterized in that it comprises:

Determine the first transmission configuration indication state TCI state sequence used for repeated transmission of data, where the first TCI state sequence includes at least one TCI state, one of each transmission of the repeated transmission and the first TCI state sequence TCI state association;

When the time domain resource corresponding to the repeated transmission changes, it is determined that the first time domain resource corresponds to each transmission corresponding to the TCI state in the first TCI state sequence and the first time domain resource The second TCI state sequence of the first time domain resource is the time domain resource corresponding to repeated transmission after the time domain resource changes, and the second TCI state sequence includes at least one TCI state;

According to the second TCI state sequence, repeated transmission of the data is performed on the first time domain resource, wherein for each transmission, the TCI state corresponding to the transmission in the second TCI state sequence is used.
The method according to claim 1, wherein the method further comprises:

According to the first TCI state sequence and target information, the corresponding relationship between the TCI state in the first TCI state sequence and the first time domain resource corresponding to each transmission is determined, and the target information is used to indicate the first The location of each transmission corresponding to the time domain resource;

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

The location information of the first time domain resource, the number of transmissions corresponding to the first time domain resource, the location information of the time domain resource corresponding to the first transmission in the second time domain resource, and the number of configured transmissions for 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 number of transmissions corresponding to the first time domain resource is less than or equal to the configured number of transmissions.
The method according to claim 1, wherein the method further comprises:

According to the polling result of each transmission of the first TCI state sequence corresponding to the first time domain resource, determine the TCI state in the first TCI state sequence and each time the first time domain resource corresponds Correspondence of transmission;

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

When there is no repeated transmission corresponding to the data after the second time domain resource, determine the first TCI according to the polling result of each transmission corresponding to the first TCI state sequence in the first time domain resource The corresponding relationship between the TCI state in the state sequence and each transmission corresponding to the first time domain resource.
The method according to claim 1, wherein the method further comprises:

According to the polling result of the partial transmission of the first TCI state sequence corresponding to the second time domain resource, determine the correspondence between the TCI state in the first TCI state sequence and each transmission corresponding to the first time domain resource relationship;

Wherein, the second time domain resource is a time domain resource corresponding to repeated transmission before the time domain resource is changed, and the partial transmission is a repeated transmission corresponding to a time domain resource that has not changed in the second time domain resource. And the time domain resource corresponding to the partial transmission corresponds to the position of the first time domain resource.
The method according to claim 5, wherein the first TCI state sequence is determined according to the polling result of the transmission of the first TCI state sequence in the part corresponding to the second time domain resource. The corresponding relationship between the TCI state and each transmission corresponding to the first time domain resource includes:

When there is no repeated transmission corresponding to the data after the second time domain resource, the first TCI state sequence is determined according to the polling result of the transmission of the first TCI state sequence in the part corresponding to the second time domain resource. The corresponding relationship between the TCI state in the TCI state sequence and each transmission corresponding to the first time domain resource.
The method according to claim 5, wherein if the time domain resource of the nth transmission corresponding to the second time domain resource changes, the nth transmission is after the second time domain resource For transmission, the TCI state corresponding to the nth transmission remains unchanged;

The determining the TCI state in the first TCI state sequence and each 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 Correspondence of the second transmission, including:

According to the polling result of the partial transmission of the first TCI state sequence in the second time domain resource and the TCI state corresponding to the nth transmission, determine the TCI state and the TCI state in the first TCI state sequence The corresponding relationship of each transmission corresponding to the first time domain resource.
The method according to claim 5, wherein if the time domain resource of the nth transmission corresponding to the second time domain resource changes, the nth transmission is after the second time domain resource Transmission;

The determining the TCI state in the first TCI state sequence and each 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 Correspondence of the second transmission, including:

Determine the first TCI state sequence according to the polling result of the first TCI state sequence in the part of the transmission corresponding to the second time domain resource and the polling result of the first TCI state sequence in the transmission set The corresponding relationship between the TCI state of and each transmission corresponding to the first time domain resource;

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

Acquiring TCI configuration information, where the TCI configuration information is used to indicate at least one TCI state;

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

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

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

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

According to the number of each TCI state, the first TCI state sequence is determined.
The method according to any one of claims 9-11, wherein:

The TCI configuration information includes multiple TCI indexes; or,

The TCI configuration information includes multiple TCI states and a configuration sequence of the multiple TCI states; or,

The TCI configuration information includes the group index of the control resource set CORESET to which the multiple TCI states belong.
The method according to any one of claims 1-8, wherein the repeated transmission includes at least one transmission of uplink transmission, or the repeated transmission includes at least one transmission of downlink transmission.
The method according to any one of claims 1-8, wherein the repeatedly transmitted information is obtained through dynamic configuration of the physical downlink control channel PDCCH, or obtained through semi-static configuration of high-level signaling; wherein The information of the repeated transmission includes the number of configured transmissions of the repeated transmission and/or the location information of the first time domain resource and/or the location information of the second time domain resource.
The method according to any one of claims 1-8, wherein the configured transmission times of the repeated transmission are obtained through downlink control information DCI configuration, and the configured transmission times are in the time domain resource of the DCI Indicate domain instructions.
A data transmission device, characterized in that it comprises 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 and the first TCI state sequence One TCI state in the TCI state sequence is associated;

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

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, wherein each time the transmission is performed, the second TCI state sequence is used with the TCI state corresponding to this transmission.
A data transmission device, characterized by comprising a processor, a memory, a communication interface, and one or more programs, the one or more programs are stored in the memory and configured to be executed by the processor The program includes instructions for executing the steps in the method according to any one of claims 1-15.
A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program enables a computer to execute the method according to any one of claims 1-15.