Configuration method for dynamic grant-free transmission configuration and related apparatus

Abstract

The present application provides a configuration method for a dynamic grant-free transmission configuration and a related apparatus. The method comprises: a terminal apparatus receiving downlink control information / sidelink control information sent by a first apparatus, the downlink control information / sidelink control information being used for retransmission and being used for configuring a first dynamic grant-free transmission configuration; and, on the basis of the downlink control information / sidelink control information, the terminal apparatus determining first configuration information for the first dynamic grant-free transmission configuration. The technical solution provided by the present application can achieve rapid and low-overhead dynamic grant-free transmission configuration information updating.

Description

A configuration method and related device for dynamic authorization-free transmission configuration Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a configuration method and related apparatus for dynamic authorization-free transmission configuration. Background Art

[0002] Transmission technology without dynamic grants refers to a technique in which a base station semi-statically configures transmission resources and parameters for uplink data transmission for a terminal through higher-layer signaling and / or physical layer signaling. There are two types of uplink dynamic grants: Type 1 configured grant (Type 1CG) and Type 2 configured grant (Type 2CG).

[0003] In the first type of configured grant, the base station sends a configured grant configuration to the terminal via radio resource control (RRC) signaling. This configuration information is used to configure all transmission resources and transmission parameters. After receiving the RRC signaling, the terminal can immediately use the grant configuration information configured by the RRC signaling to transmit data.

[0004] In a second type of authorization, the base station first sends authorization configuration information to the terminal via RRC signaling. This configuration information is used to configure a portion of transmission resources and transmission parameters. The base station then sends downlink control information (DCI) to the terminal to activate uplink data transmission based on the second type of authorization, and simultaneously sends authorization configuration information to the terminal. This configuration information is used to configure another portion of transmission resources and transmission parameters. After receiving this RRC signaling, the terminal cannot immediately transmit data using the authorization configuration information configured by the RRC signaling. Instead, it must wait until it receives the corresponding activation DCI before it can use the RRC signaling and the authorization configuration information configured by the activation DCI to transmit data.

[0005] Downlink dynamic-free authorization can also be called semi-persistent scheduling (SPS). Its mechanism is similar to the authorization of the second type of configuration mentioned above. The base station sends SPS configuration information to the terminal through RRC signaling. After receiving the RRC signaling, the terminal cannot immediately use the SPS configuration information configured by the RRC signaling to receive downlink data. Instead, it must wait until the corresponding activation DCI is received before it can use the RRC signaling and the SPS configuration information configured by the activation DCI to receive downlink data.

[0006] Currently, when dynamic grant-free configuration information needs to be updated, for Type 1 CG, the base station needs to update the configuration information by reissuing RRC signaling. For Type 2 CG or SPS, the base station needs to update the configuration information by reissuing RRC signaling or activating DCI. However, the RRC signaling delivery cycle is generally long, resulting in slow configuration information updates and an inability to quickly adapt to channel changes, which may lead to a decrease in dynamic grant-free transmission performance. In addition, the delivery of RRC signaling or activation DCI, as well as the terminal's blind detection of the activation DCI, incur significant overhead.

[0007] Summary of the Invention

[0008] The embodiments of the present application provide a configuration method and related devices for dynamic authorization-free transmission configuration, which can achieve fast and low-overhead dynamic authorization-free configuration information update.

[0009] In a first aspect, an embodiment of the present application provides a method for configuring a dynamic authorization-free transmission configuration, the method comprising:

[0010] The terminal device receives downlink control information / sidelink control information sent by the first device, where the downlink control information / sidelink control information is used for retransmission and for configuring a first dynamic authorization-free transmission configuration;

[0011] The terminal device determines first configuration information of the first dynamic authorization-free transmission configuration according to the downlink control information / sidelink control information.

[0012] Optionally, the first device is a network device, and the method can be used in an air interface link transmission scenario without dynamic authorization.

[0013] Optionally, the first device is another terminal device, and the method can be used in a sidelink dynamic authorization-free transmission scenario.

[0014] In the above embodiment, the first device can add information for indicating that the DCI / SCI is used to configure the first dynamic authorization-free transmission configuration in the downlink control information / side control information originally used for retransmission, so that the downlink control information / side control information can be used to configure the first dynamic authorization-free transmission configuration at the same time. Accordingly, when the dynamic authorization-free transmission configuration between the terminal device and the first device needs to be updated (or configured, reconfigured, activated, or reactivated), the first device can simultaneously update the dynamic authorization-free transmission configuration by sending the downlink control information / side control information to the terminal device, without having to update the dynamic authorization-free transmission configuration by specifically sending RRC signaling or activation information to the terminal device, thereby saving overhead. Moreover, the downlink control information / side control information belongs to the physical layer (or L1 layer) signaling, and the RRC signaling belongs to the high-layer signaling. The sending period of the downlink control information / side control information is shorter than that of the RRC signaling, thereby increasing the update speed of the dynamic authorization-free transmission configuration. In addition, the terminal device has natural feedback on the downlink control information / sidelink control information, so the terminal device does not need to specifically confirm the dynamic grant-free transmission configuration, thereby further reducing overhead.

[0015] In a possible implementation manner, the downlink control information / sidelink control information includes a first indication field, and a first value of the first indication field is used to indicate that the downlink control information / sidelink control information is for retransmission.

[0016] In the above embodiment, the first value of the first indication field in the downlink control information / sidelink control information is used to indicate that the downlink control information / sidelink control information is used for retransmission. Accordingly, the terminal device can determine whether the downlink control information / sidelink control information is used for retransmission based on the value of the first indication field.

[0017] In a possible implementation manner, the downlink control information / sidelink control information includes a second indication field, and a second value of the second indication field is used to indicate that the downlink control information / sidelink control information is used to configure the first dynamic authorization-free transmission configuration.

[0018] In the above implementation, the second value of the second indication field in the downlink control information / sidelink control information is used to indicate that the downlink control information / sidelink control information is used to configure the first dynamic authorization-free transmission configuration. Accordingly, the terminal device can determine whether the downlink control information / sidelink control information is used to configure the first dynamic authorization-free transmission configuration based on the value of the second indication field.

[0019] In a possible implementation, the downlink control information / sidelink control information includes a third indication field, and the third indication field is used to indicate first configuration information of the first dynamic authorization-free transmission configuration, where the first configuration information includes at least one transmission resource and / or transmission parameter.

[0020] In the above implementation, the third indication field in the downlink control information / sidelink control information is used to indicate the first configuration information of the first dynamic authorization-free transmission configuration, whereby the terminal device can determine the first configuration information of the first dynamic authorization-free transmission configuration according to the third indication field.

[0021] In a possible implementation manner, the third indication field includes one indication field, and the one indication field is used to indicate the first configuration information.

[0022] In the above embodiment, an indication field in the downlink control information / sidelink control information is used to indicate the first configuration information of the first dynamic authorization-free transmission configuration, that is, an indication field can be used to indicate all transmission resources and / or transmission parameters in the first configuration information, thereby reducing the indication overhead. The terminal device can determine all transmission resources and / or transmission parameters in the first configuration information at one time based on the indication field, which is conducive to improving the efficiency of obtaining the first configuration information.

[0023] In a possible implementation manner, the third indication field includes multiple indication fields, and each indication field in the multiple indication fields is used to indicate corresponding transmission resources and / or transmission parameters.

[0024] In the above implementation, multiple indication fields corresponding to transmission resources and / or transmission parameters in the downlink control information / sidelink control information are used to indicate the first configuration information of the first dynamic authorization-free transmission configuration. The transmission resources and / or transmission parameters in the first configuration information can be indicated separately, which has good flexibility and is conducive to meeting the diverse needs of configuration information.

[0025] In one possible embodiment, the downlink control information / sidelink control information includes a fourth indication field, and the fourth indication field is used to indicate the first dynamic authorization-free transmission configuration. The fourth indication field corresponds to multiple dynamic authorization-free transmission configurations, and the first dynamic authorization-free transmission configuration is included in the multiple dynamic authorization-free transmission configurations.

[0026] In the above embodiment, when there are multiple dynamic authorization-free transmission configurations, the fourth indication field in the downlink control information / sidelink control information is used to indicate the first dynamic authorization-free transmission configuration. Based on this, the terminal device can determine which of the multiple dynamic authorization-free transmission configurations needs to be configured according to the value of the fourth indication field.

[0027] In one possible embodiment, the downlink control information / sidelink control information includes a fifth indication field, and the fifth indication field is used to indicate the modulation order of the current retransmission, or the adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the previous retransmission.

[0028] In the above embodiment, the fifth indicator field in the downlink control information / sidelink control information is used to indicate the modulation order of the current retransmission, or the adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the previous retransmission. Based on this, the terminal device can determine the modulation order to be used for the current retransmission according to the value of the fifth indicator field.

[0029] In a possible implementation manner, the second indication field, the third indication field, or the fifth indication field is a modulation and coding scheme (MCS) field.

[0030] In the above embodiment, the modulation and coding scheme MCS field has five bits. When the downlink control information / sidelink control information is used for retransmission, the modulation and coding scheme MCS field only needs to occupy four values. Therefore, the modulation and coding scheme MCS field has redundant bits that can be used to indicate other information, thereby making full use of the indication resources and saving indication overhead.

[0031] In a second aspect, an embodiment of the present application provides a method for configuring a dynamic authorization-free transmission configuration, the method comprising:

[0032] The first device determines downlink control information / sidelink control information, where the downlink control information / sidelink control information is used for retransmission and for configuring a first dynamic grant-free transmission configuration;

[0033] The first device sends the downlink control information / sidelink control information to the terminal device.

[0034] Optionally, the first device may be a network device, and the method may be used in an air interface link transmission scenario without dynamic authorization.

[0035] Optionally, the first device is another terminal device, and the method can be used in a sidelink dynamic authorization-free transmission scenario.

[0036] In the above embodiment, the first device can add information for indicating that the downlink control information / side control information is used to configure the first dynamic authorization-free transmission configuration in the downlink control information / side control information originally used for retransmission, so that the downlink control information / side control information can be used to configure the first dynamic authorization-free transmission configuration at the same time. Accordingly, when the dynamic authorization-free transmission configuration between the terminal device and the first device needs to be updated (or configured, reconfigured, activated, or reactivated), the first device can simultaneously update the dynamic authorization-free transmission configuration by sending the downlink control information / side control information to the terminal device, without having to update the dynamic authorization-free transmission configuration by specifically sending RRC signaling or activation information to the terminal device, thereby saving overhead. Moreover, the downlink control information / side control information belongs to the physical layer (or L1 layer) signaling, and the RRC signaling belongs to the high-layer signaling. The sending period of the downlink control information / side control information is shorter than that of the RRC signaling, thereby increasing the update speed of the dynamic authorization-free transmission configuration. In addition, the terminal device has natural feedback on the downlink control information / sidelink control information, so the terminal device does not need to specifically confirm the dynamic grant-free transmission configuration, thereby further reducing overhead.

[0037] In a possible implementation manner, the downlink control information / sidelink control information includes a first indication field, and a first value of the first indication field is used to indicate that the downlink control information / sidelink control information is for retransmission.

[0038] In a possible implementation manner, the downlink control information / sidelink control information includes a second indication field, and a second value of the second indication field is used to indicate that the downlink control information / sidelink control information is used to configure the first dynamic authorization-free transmission configuration.

[0039] In a possible implementation, the downlink control information / sidelink control information includes a third indication field, and the third indication field is used to indicate first configuration information of the first dynamic authorization-free transmission configuration, where the first configuration information includes at least one transmission resource and / or transmission parameter.

[0040] In a possible implementation manner, the third indication field includes one indication field, and the one indication field is used to indicate the first configuration information.

[0041] In a possible implementation manner, the third indication field includes multiple indication fields, and each indication field in the multiple indication fields is used to indicate corresponding transmission resources and / or transmission parameters.

[0042] In one possible embodiment, the downlink control information / sidelink control information includes a fourth indication field, and the fourth indication field is used to indicate the first dynamic authorization-free transmission configuration. The fourth indication field corresponds to multiple dynamic authorization-free transmission configurations, and the first dynamic authorization-free transmission configuration is included in the multiple dynamic authorization-free transmission configurations.

[0043] In one possible embodiment, the downlink control information / sidelink control information includes a fifth indication field, and the fifth indication field is used to indicate the modulation order of the current retransmission, or the adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the previous retransmission.

[0044] In a possible implementation manner, the second indication field, the third indication field, or the fifth indication field is a modulation and coding scheme (MCS) field.

[0045] In a third aspect, an embodiment of the present application provides a configuration device for dynamic authorization-free transmission configuration, which includes a module or unit for executing the method described in the first aspect or any possible implementation method of the first aspect.

[0046] In one possible implementation, the device includes:

[0047] a transceiver unit, configured to receive downlink control information / sidelink control information sent by a first device, wherein the downlink control information / sidelink control information is used for retransmission and for configuring a first dynamic authorization-free transmission configuration;

[0048] A processing unit is configured to determine first configuration information of the first dynamic authorization-free transmission configuration according to the downlink control information / sidelink control information.

[0049] In a possible implementation manner, the downlink control information / sidelink control information includes a first indication field, and a first value of the first indication field is used to indicate that the downlink control information / sidelink control information is for retransmission.

[0050] In a possible implementation manner, the downlink control information / sidelink control information includes a second indication field, and a second value of the second indication field is used to indicate that the downlink control information / sidelink control information is used to configure the first dynamic authorization-free transmission configuration.

[0051] In a possible implementation, the downlink control information / sidelink control information includes a third indication field, and the third indication field is used to indicate first configuration information of the first dynamic authorization-free transmission configuration, where the first configuration information includes at least one transmission resource and / or transmission parameter.

[0052] In a possible implementation manner, the third indication field includes one indication field, and the one indication field is used to indicate the first configuration information.

[0053] In a possible implementation manner, the third indication field includes multiple indication fields, and each indication field in the multiple indication fields is used to indicate corresponding transmission resources and / or transmission parameters.

[0054] In one possible embodiment, the downlink control information / sidelink control information includes a fourth indication field, and the fourth indication field is used to indicate the first dynamic authorization-free transmission configuration. The fourth indication field corresponds to multiple dynamic authorization-free transmission configurations, and the first dynamic authorization-free transmission configuration is included in the multiple dynamic authorization-free transmission configurations.

[0055] In one possible embodiment, the downlink control information / sidelink control information includes a fifth indication field, and the fifth indication field is used to indicate the modulation order of the current retransmission, or the adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the previous retransmission.

[0056] In a possible implementation manner, the second indication field, the third indication field, or the fifth indication field is a modulation and coding scheme (MCS) field.

[0057] In a fourth aspect, an embodiment of the present application provides a configuration device for dynamic authorization-free transmission configuration, which includes a module or unit for executing the method described in the second aspect or any possible implementation method of the second aspect.

[0058] In one possible implementation, the device includes:

[0059] a processing unit, configured to determine downlink control information / sidelink control information for retransmission and for configuring a first dynamic grant-free transmission configuration;

[0060] The transceiver unit is configured to send the downlink control information / sidelink control information to the first terminal device.

[0061] In a possible implementation manner, the downlink control information / sidelink control information includes a first indication field, and a first value of the first indication field is used to indicate that the downlink control information / sidelink control information is for retransmission.

[0062] In a possible implementation manner, the downlink control information / sidelink control information includes a second indication field, and a second value of the second indication field is used to indicate that the downlink control information / sidelink control information is used to configure the first dynamic authorization-free transmission configuration.

[0063] In a possible implementation, the downlink control information / sidelink control information includes a third indication field, and the third indication field is used to indicate first configuration information of the first dynamic authorization-free transmission configuration, where the first configuration information includes at least one transmission resource and / or transmission parameter.

[0064] In a possible implementation manner, the third indication field includes one indication field, and the one indication field is used to indicate the first configuration information.

[0065] In a possible implementation manner, the third indication field includes multiple indication fields, and each indication field in the multiple indication fields is used to indicate corresponding transmission resources and / or transmission parameters.

[0066] In one possible embodiment, the downlink control information / sidelink control information includes a fourth indication field, and the fourth indication field is used to indicate the first dynamic authorization-free transmission configuration. The fourth indication field corresponds to multiple dynamic authorization-free transmission configurations, and the first dynamic authorization-free transmission configuration is included in the multiple dynamic authorization-free transmission configurations.

[0067] In one possible embodiment, the downlink control information / sidelink control information includes a fifth indication field, and the fifth indication field is used to indicate the modulation order of the current retransmission, or the adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the previous retransmission.

[0068] In a possible implementation manner, the second indication field, the third indication field, or the fifth indication field is a modulation and coding scheme (MCS) field.

[0069] In a fifth aspect, an embodiment of the present application provides an electronic device, comprising a processor coupled to a memory and configured to execute computer programs or instructions in the memory to implement the method described in any one of the first and second aspects or any possible implementation methods. Optionally, the electronic device further comprises a memory. Optionally, the electronic device further comprises a communication interface, the processor coupled to the communication interface.

[0070] In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed, the method described in any one of the first to second aspects or any possible implementation method is implemented.

[0071] In the seventh aspect, an embodiment of the present application provides a computer program product, which includes a computer program or instructions. When the computer program or instructions are executed, the method described in any aspect of the first to second aspects or any possible implementation method is implemented.

[0072] In an eighth aspect, an embodiment of the present application provides a chip, comprising a processor configured to execute a computer program or instruction. When the processor executes the computer program or instruction, the method described in any one of the first and second aspects or any possible implementation manner is implemented. Optionally, the chip further comprises a communication interface configured to receive or transmit signals.

[0073] In the ninth aspect, an embodiment of the present application provides a chip, which includes a logic circuit and an input / output interface, and the logic circuit is used to couple with the input / output interface and transmit data through the input / output interface to execute the method described in any aspect of the first to second aspects or any possible implementation method.

[0074] In a tenth aspect, an embodiment of the present application provides a system, comprising an apparatus as described in the third aspect or any possible implementation of the third aspect, and an apparatus as described in the fourth aspect or any possible implementation of the fourth aspect.

[0075] In the eleventh aspect, an embodiment of the present application provides a system, which includes a terminal device and a first device, wherein the terminal device is used to execute the method described in the above-mentioned first aspect or any possible implementation method of the first aspect, and the first device is used to execute the method described in the above-mentioned second aspect or any possible implementation method of the second aspect.

[0076] The beneficial effects brought about by the above-mentioned second to eleventh aspects can be referred to the description of the beneficial effects in the first aspect, and will not be repeated here.

[0077] In addition, in the process of executing the method described in any one of the first to second aspects and any possible implementation methods, the process of sending information and / or receiving information in the above method can be understood as the process of the processor outputting information and / or the process of the processor receiving input information. When outputting information, the processor can output the information to the transceiver (or communication interface, or sending module) so that it can be transmitted by the transceiver. After the information is output by the processor, it may also need to undergo other processing before it reaches the transceiver. Similarly, when the processor receives input information, the transceiver (or communication interface, or sending module) receives the information and inputs it into the processor. Furthermore, after the transceiver receives the information, the information may need to undergo other processing before it is input into the processor.

[0078] Based on the above principles, for example, the sending of information mentioned in the above method can be understood as the processor outputting information. For another example, the receiving of information can be understood as the processor receiving input information.

[0079] Optionally, for the operations such as transmission, sending and receiving involved in the processor, if there is no special explanation, or if they do not conflict with their actual functions or internal logic in the relevant description, they can be more generally understood as processor output, reception, input and other operations.

[0080] Optionally, in the process of executing the method described in any one of the first to second aspects and any possible implementation methods, the processor may be a processor specifically used to execute these methods, or a processor that executes these methods by executing computer instructions in a memory, such as a general-purpose processor. The memory may be a non-transitory memory, such as a read-only memory (ROM), which may be integrated with the processor on the same chip or may be separately provided on different chips. The embodiment of the present application does not limit the type of memory and the configuration of the memory and the processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0082] FIG1 is a schematic diagram of uplink data transmission based on dynamic authorization;

[0083] FIG2 is a schematic diagram of uplink data transmission based on the authorization of the first type of configuration;

[0084] FIG3 is a schematic diagram of uplink data transmission based on the authorization of the second type of configuration;

[0085] FIG4 is a schematic diagram of a network architecture of a communication system provided in an embodiment of the present application;

[0086] FIG5 is a flow chart of a configuration method for dynamic authorization-free transmission configuration provided in an embodiment of the present application;

[0087] FIG6 is a structural diagram of a configuration device for dynamic authorization-free transmission configuration provided in an embodiment of the present application;

[0088] FIG7 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0089] FIG8 is a schematic structural diagram of a chip provided in an embodiment of the present application. DETAILED DESCRIPTION

[0090] In order to make the purpose, technical solutions and advantages of this application clearer, the embodiments of this application will be described below in conjunction with the drawings in the embodiments of this application.

[0091] In this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0092] The terms "first," "second," and the like mentioned in the embodiments of the present application do not limit the quantity or order of execution, and "first," "second," and the like do not necessarily limit differences. In addition, the terms "include," "comprise," and "have," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0093] The “embodiment” mentioned herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It can be understood explicitly and implicitly by those skilled in the art that in the various embodiments of the present application, unless otherwise specified and there is a logical conflict, the terms and / or descriptions between the various embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form a new embodiment according to their inherent logical relationship.

[0094] It should be understood that in this application, "at least one" means one or more, and "more than one" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0095] In the description of this application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated. For example, the information to be indicated can be directly indicated, such as indicating the information to be indicated itself or the index of the information to be indicated. For another example, the information to be indicated can also be indirectly indicated by indicating other information, and there is an association between the other indicated information and the information to be indicated. For another example, only a part of the information to be indicated can be indicated, while the other parts of the information to be indicated are known or agreed in advance. In addition, the indication of specific information can be achieved by means of the pre-agreed (such as specified in the protocol) order of arrangement of each information, thereby reducing the indication overhead to a certain extent.

[0096] To facilitate understanding of the embodiments of the present application, the following first introduces the relevant technologies of dynamic grant and without dynamic grant. Dynamic grant can also be called dynamic scheduling, and without dynamic grant can also be called grant free or configured grant (CG). The following is an exemplary explanation.

[0097] Please refer to Figure 1, which is a schematic diagram of uplink data transmission based on dynamic grants. As shown in Figure 1, when a terminal has an uplink data transmission requirement, it sends a scheduling request (SR) to the base station via the physical uplink control channel (PUCCH) or a non-empty buffer status report (BSR) to the base station via the physical uplink shared channel (PUSCH). After receiving the SR or BSR sent by the terminal, the base station sends downlink control information (DCI) to the terminal via the physical downlink control channel (PDCCH). The DCI carries an uplink grant, which authorizes the terminal to use specified transmission resources and transmission parameters to transmit uplink data. After receiving the DCI, the terminal can transmit data based on the uplink grant.

[0098] The above-mentioned uplink data transmission based on dynamic authorization can efficiently utilize the real-time channel information between the terminal and the base station, and specify appropriate transmission resources and transmission parameters for each transmission of the terminal. However, before sending data each time, the terminal needs to send an SR or BSR to the base station, and then the base station will authorize it through DCI. This process will introduce transmission delay and PDCCH signaling overhead. At the same time, since the reception of PDCCH usually requires the terminal to perform blind detection on different time-frequency resources according to different control channel element (CCE) aggregation levels, different DCI formats, different DCI lengths, and different radio network temporary identifiers (RNTI), it consumes a lot of power.

[0099] In order to reduce transmission delay, signaling overhead and terminal power consumption, dynamic authorization-free transmission technology has been introduced. Its basic principle is that the base station configures the transmission resources and transmission parameters used for uplink data transmission for the terminal in a semi-static manner through high-layer signaling and / or physical layer signaling. When the terminal has uplink data transmission requirements, it does not need to go through the process of sending SR or BSR to the base station and waiting for uplink authorization. Instead, it can directly use the semi-statically configured transmission resources and transmission parameters to send data to the base station, realizing the data coming and going, thereby achieving the purpose of reducing transmission delay, signaling overhead and terminal power consumption.

[0100] There are two types of uplink dynamic-free grants: Type 1 configured grant (Type 1CG) and Type 2 configured grant (Type 2 CG).

[0101] Please refer to Figure 2, which is a schematic diagram of uplink data transmission based on a first-type configured grant. As shown in Figure 2, the base station sends configured grant configuration information to the terminal via radio resource control (RRC) signaling. This configuration information is used to configure all transmission resources and transmission parameters, including the time domain resource period, open-loop power control parameters, waveform, redundancy version (RV) sequence, repetition count, frequency hopping mode, resource allocation type, number of hybrid automatic repeat request (HARQ) processes, demodulation reference signal (DMRS) parameters, modulation coding scheme (MCS) table, resource block group (RBG) size, as well as time domain resources, frequency domain resources, MCS, etc. After receiving this RRC signaling, the terminal can immediately use the grant configuration information configured by the RRC signaling to transmit data.

[0102] Please refer to Figure 3, which is a schematic diagram of uplink data transmission based on a second-type configuration grant. As shown in Figure 3, the second-type configuration grant is configured in a two-step manner: First, the base station sends grant configuration information to the terminal via RRC signaling. This configuration information is used to configure a portion of transmission resources and transmission parameters, including the time domain resource period, open-loop power control parameters, waveform, redundancy version sequence, repetition number, frequency hopping mode, resource allocation type, number of HARQ processes, DMRS parameters, MCS table, RBG size, etc.; then, the base station sends an activation DCI to the terminal to activate uplink data transmission based on the second-type configuration grant, and simultaneously sends the configured grant configuration information to the terminal. This configuration information is used to configure another portion of transmission resources and transmission parameters, including time domain resources, frequency domain resources, MCS, etc. After receiving this RRC signaling, the terminal cannot immediately transmit data using the grant configuration information configured by this RRC signaling. Instead, it must wait until it receives the corresponding activation DCI before it can use this RRC signaling and the grant configuration information configured by this activation DCI to transmit data.

[0103] Downlink dynamic-free authorization can also be called semi-persistent scheduling (SPS). Its mechanism is similar to the authorization of the second type of configuration mentioned above. It adopts a two-step configuration method. The base station sends SPS configuration information to the terminal through RRC signaling. After receiving the RRC signaling, the terminal cannot immediately use the SPS configuration information configured by the RRC signaling to receive downlink data. Instead, it must wait until the corresponding activation DCI is received before it can use the RRC signaling and the SPS configuration information configured by the activation DCI to receive downlink data.

[0104] Currently, when dynamic grant-free configuration information needs to be updated, for Type 1 CG, the base station needs to update the configuration information by reissuing RRC signaling. For Type 2 CG or SPS, the base station needs to update the configuration information by reissuing RRC signaling or activating DCI. However, the RRC signaling delivery cycle is generally long, resulting in slow configuration information updates and an inability to quickly adapt to channel changes, which may lead to a decrease in dynamic grant-free transmission performance. In addition, the delivery of RRC signaling or activation DCI, as well as the terminal's blind detection of the activation DCI, incur significant overhead.

[0105] In order to solve the above problems, the embodiments of the present application provide a configuration method and related devices for dynamic authorization-free transmission configuration, which can realize the rapid update of dynamic authorization-free configuration information and save overhead.

[0106] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system for mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, universal mobile telecommunications system (UMTS) system, enhanced data rate for GSM evolution (EDGE) system, and world-wide interoperability for microwave access (WiMAX) system. The technical solutions of the embodiments of the present application can also be applied to other communication systems, such as public land mobile network (PLMN) systems, advanced long term evolution (LTE advanced, LTE-A) systems, fifth generation (5G) systems, new radio (NR) systems (such as sixth generation (6G) systems), machine to machine (M2M) systems, or other communication systems that will evolve in the future, etc., and the embodiments of the present application are not limited to this.

[0107] The communication system includes at least two entities, one of which can send data to the other entity or receive data sent by the other entity. The data here can be, but is not limited to: physical signals, such as preambles, reference signals, etc.; physical layer control information, such as downlink control information (DCI), uplink control information (UCI), etc.; control plane (CP) data, such as radio resource control (RRC) messages, etc.; user plane (UP) data; other specific scenario or application-related information, such as relevant data generated by artificial intelligence (AI) and machine learning (ML) (such as gradient information, training data, model parameters, etc.), enabling perception functions or relevant data generated by perception, etc.

[0108] Please refer to Figure 4, which is a schematic diagram of a network architecture of a communication system provided in an embodiment of the present application. As shown in Figure 4, the network architecture 400 includes a network device 410 and multiple terminal devices (e.g., terminal device 420a, terminal device 420b, terminal device 420c, terminal device 420d, terminal device 420e, and terminal device 420f), wherein the network device 410 is communicatively connected to the terminal devices 420a-420f respectively, and the network device 410 can send data to the terminal devices 420a-420f and can also receive data from the terminal devices 420a-420f.

[0109] As shown in FIG4 , terminal devices can also be communicatively connected to each other. For example, terminal device 420d, terminal device 420e, and terminal device 420f can also form a network architecture 401, wherein terminal device 420d is communicatively connected to terminal device 420e and terminal device 420f, respectively. Terminal device 420d can send data to terminal device 420e and terminal device 420f, and can also receive data from terminal device 420e and terminal device 420f. For example, in a smart home scenario, a smart home terminal device can send control instructions to other smart home terminal devices, and other smart home terminal devices can perform response operations or feedback status information after receiving the control instructions. For another example, in a vehicle networking scenario, a vehicle-mounted terminal device can send data to other vehicle-mounted terminal devices, and can also receive data from other vehicle-mounted terminal devices.

[0110] Optionally, the network architecture may further include other devices, for example, a relay node may be included between the network device and the terminal device, which is not shown in FIG4 . The relay node may be in the form of a network device or a terminal device.

[0111] The network devices in the embodiments of the present application may include, but are not limited to, base stations, next generation Node Bs (gNBs), evolved Node Bs (eNBs), radio network controllers (RNCs), Node Bs (NBs), base station controllers (BSCs), base transceiver stations (BTSs), home evolved Node Bs (HeNBs or HNBs), baseband units (BBUs), servers, wearable devices, vehicle-mounted devices, access points (APs) in wireless fidelity (WIFI) systems, wireless relay nodes, wireless backhaul nodes, transmission points (TPs) or transmission and reception points (TRPs), and may also be 5G, such as gNBs, TRPs or TPs in new radio (NR) systems, one or a group of antenna panels of a base station in a 5G system, or network nodes constituting gNBs or TPs, such as baseband units or distributed units (DPUs). The base station may be a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station. The base station may be a terrestrial base station or a non-terrestrial base station, such as a low earth orbit (LEO) / very low earth orbit (VLEO) satellite, an unmanned aerial vehicle (UAV), or other high altitude platform station (HAPS).

[0112] In some deployments, a gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU). The CU implements some gNB functions, while the DU implements some gNB functions. For example, the CU is responsible for processing non-real-time protocols and services, implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, implementing the functions of the radio link control (RLC), media access control (MAC), and physical (PHY) layers. The AAU implements some physical layer processing functions, RF processing, and active antenna-related functions. RRC layer information is generated by the CU and ultimately encapsulated by the DU's PHY layer into PHY layer information, or is converted from PHY layer information. Therefore, in this architecture, higher-layer signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or by a combination of the DU and the AAU. It is understood that the network device may include one or more of a CU node, a DU node, and an AAU node. In addition, the CU may be classified as a network device in an access network (RAN) or a network device in a core network (CN), which is not limited in the present embodiment.

[0113] A terminal device is a device with wireless communication capabilities, and may also be referred to as: terminal, terminal device, access terminal, user unit, user equipment (UE), user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a train, an airplane, a mobile internet device (MID), a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control (such as a robot, etc.), a wireless terminal in the Internet of Vehicles (such as an on-board device, a whole vehicle device, an on-board module, a vehicle, etc.), a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, an on-board device, a wearable device, etc. The terminal device may be an active terminal device, an inactive terminal device or an idle terminal device, or a terminal device that is not in any of the above three states, such as a terminal device that is not attached to a network or is not performing downlink synchronization with a network. The embodiments of the present application do not limit the specific technology and specific device form used by the terminal device.

[0114] Network devices and terminal devices can be fixed or mobile. For example, network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of network devices and terminal devices.

[0115] Network devices and terminal devices, and terminal devices and terminal devices can communicate through licensed spectrum, through unlicensed spectrum, or through both licensed and unlicensed spectrum. This communication can be applied to high-frequency scenarios, such as millimeter wave and terahertz (THz) bands, and can also be applied to low-frequency scenarios below 6 GHz (Sub-6G), such as 700 / 900 MHz, 2.1 / 2.6 / 3.5 GHz bands, etc. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0116] The network architecture shown in Figure 4 (for example, network architecture 400 or network architecture 401) is applicable to the configuration method of dynamic authorization-free transmission configuration provided in the embodiment of the present application. The configuration method of dynamic authorization-free transmission configuration provided in the embodiment of the present application can be used in the air interface link dynamic authorization-free transmission scenario between the terminal device (for example, any terminal device among terminal devices 420a-420f) and the network device (for example, network device 410), such as the transmission scenario based on Type 1 CG, Type 2 CG, SPS or preconfigured uplink resource (preconfigured uplink resource, PUR), and can also be used in the side link dynamic authorization-free transmission scenario between the terminal device (for example, terminal device 420d) and the terminal device (for example, terminal device 420e or terminal device 420f).

[0117] It should be understood that the network architecture shown in Figure 4 is only an example, and the network architecture applicable to the embodiments of the present application is not limited to this. Any network architecture that can realize the functions of some or all of the above-mentioned devices is applicable to the embodiments of the present application.

[0118] The following describes the configuration method for dynamic authorization-free transmission configuration provided in an embodiment of the present application.

[0119] Please refer to Figure 5, which is a flowchart of a configuration method for dynamic authorization-free transmission configuration provided by an embodiment of the present application. The embodiment shown in Figure 5 uses a terminal device (for distinction, denoted as a first terminal device) and a first device as an example of the execution subject of the interaction to illustrate the method.

[0120] In one possible embodiment, the first device is a network device, and the method can be used in an air interface link transmission scenario without dynamic authorization. For example, the first terminal device can be any terminal device among terminal devices 420a-420f in Figure 4, and the network device can be network device 410 in Figure 4.

[0121] In another possible embodiment, the first device is another terminal device (referred to as the second terminal device for distinction), and the method can be used in a sidelink dynamic authorization-free transmission scenario. For example, the first terminal device can be terminal device 420e or terminal device 420f in FIG. 4 , and the second terminal device can be terminal device 420d in FIG. 4 .

[0122] As shown in FIG5 , the configuration method of the dynamic authorization-free transmission configuration may include but is not limited to the following steps S501 to S503 .

[0123] S501: A first device determines downlink control information / sidelink control information, which is used for retransmission and for configuring a first dynamic grant-free transmission configuration.

[0124] Taking the first device as a network device as an example, data transmission between the first terminal device and the network device can be based on a dynamic authorization-free transmission method. For example, the first terminal device sends data to the network device through a physical uplink shared channel (PUSCH), and the network device sends data to the first terminal device through a physical downlink shared channel (PDSCH).

[0125] In one possible implementation, when the network device fails to correctly receive data sent by the first terminal device through the PUSCH, the network device may determine downlink control information (DCI) and record the DCI as a retransmission DCI. The retransmission DCI is used for retransmission, and specifically may instruct the first terminal device to retransmit data. The retransmission DCI may also include information for indicating that the retransmission DCI is used to configure a first dynamic authorization-free transmission configuration, so that the retransmission DCI may be used to configure the first dynamic authorization-free transmission configuration at the same time, for example, it may instruct the first terminal device to update the configuration information used in the dynamic authorization-free transmission.

[0126] In another possible implementation, when the first terminal device fails to correctly receive data sent by the network device via the PDSCH, the network device may determine to retransmit the DCI. The retransmitted DCI is used for retransmission and may specifically instruct the first terminal device to receive the data retransmitted by the network device. The retransmitted DCI may also include information indicating that the retransmitted DCI is used to configure a first dynamic authorization-free transmission configuration, such that the retransmitted DCI may also be used to configure the first dynamic authorization-free transmission configuration, for example, to instruct the first terminal device to update the configuration information used in the dynamic authorization-free transmission.

[0127] It should be noted that the above-mentioned retransmitted DCI is used to configure the first dynamic grant-free transmission configuration, which can be understood as the retransmitted DCI is used to configure, or reconfigure, or activate, or reactivate the first dynamic grant-free transmission configuration.

[0128] Taking the first device being the second terminal device as an example, data transmission between the first terminal device and the second terminal device can be based on a dynamic authorization-free transmission method. For example, the first terminal device sends data to the second terminal device through a physical sidelink shared channel (PSSCH), and the second terminal device sends data to the first terminal device through the PSSCH.

[0129] In one possible implementation, when the second terminal device fails to correctly receive the data sent by the first terminal device through the PSSCH, the second terminal device may determine sidelink control information (SCI) and record the SCI as a retransmission SCI. The retransmission SCI is used for retransmission, and specifically may instruct the first terminal device to retransmit data. The retransmission SCI may also include information for indicating that the retransmission SCI is used to configure the first dynamic authorization-free transmission configuration, so that the retransmission SCI can be used to configure the first dynamic authorization-free transmission configuration at the same time, for example, it can instruct the first terminal device to update the configuration information used in the dynamic authorization-free transmission.

[0130] In another possible implementation, when the first terminal device fails to correctly receive data sent by the second terminal device via the PSSCH, the second terminal device may determine a retransmission SCI. The retransmission SCI is used for retransmission, and specifically may instruct the first terminal device to receive the data retransmitted by the second terminal device. The retransmission SCI may also include information for indicating that the retransmission SCI is used to configure a first dynamic authorization-free transmission configuration, so that the retransmission SCI may be simultaneously used to configure the first dynamic authorization-free transmission configuration, for example, to instruct the first terminal device to update the configuration information used in the dynamic authorization-free transmission.

[0131] It should be noted that the above-mentioned retransmitted SCI is used to configure the first dynamic grant-free transmission configuration, which can be understood as the retransmitted SCI is used to configure, or reconfigure, or activate, or reactivate the first dynamic grant-free transmission configuration.

[0132] S502: The first device sends downlink control information / sidelink control information to the first terminal device. Correspondingly, the first terminal device receives the downlink control information / sidelink control information from the first device.

[0133] Taking the first device as a network device as an example, the network device sends a retransmission DCI to the first terminal device. After receiving the retransmission DCI, the first terminal device can determine that the retransmission DCI is used for retransmission and is also used to configure the first dynamic authorization-free transmission configuration.

[0134] Taking the first device as the second terminal device as an example, the second terminal device sends a retransmission SCI to the first terminal device. After receiving the retransmission SCI, the first terminal device can determine that the retransmission SCI is used for retransmission and is also used to configure the first dynamic authorization-free transmission configuration.

[0135] S503: The first terminal device determines first configuration information of a first dynamic authorization-free transmission configuration according to the downlink control information / sidelink control information.

[0136] The dynamic authorization-free transmission configuration can be understood as a configured dynamic authorization-free transmission. One or more sets of dynamic authorization-free transmission configurations may exist between the first terminal device and the first device. Different dynamic authorization-free transmission configurations may be used to meet different business needs. Each set of dynamic authorization-free transmission configurations may be associated with one or more sets of configuration information. Different configuration information may include different transmission resources and / or transmission parameters, which may be used to meet different transmission performance requirements. The above-mentioned dynamic authorization-free transmission configuration and configuration information may be pre-configured by the first device or pre-agreed upon by the first device and the first terminal device.

[0137] The first dynamic-free authorization transmission configuration can be understood as a dynamic-free authorization transmission configuration that needs to be configured (or reconfigured, or activated, or reactivated), that is, it is used to indicate which set of dynamic-free authorization transmission configurations needs to be configured (or reconfigured, or activated, or reactivated). Exemplarily, when there is only one set of dynamic-free authorization transmission configuration between the first terminal device and the first device, the first dynamic-free authorization transmission configuration can be this set of dynamic-free authorization transmission configuration; when there are multiple sets of dynamic-free authorization transmission configurations between the first terminal device and the first device, the first dynamic-free authorization transmission configuration can be any one of the multiple sets of dynamic-free authorization transmission configurations.

[0138] The first configuration information can be understood as the configuration information required for use in the first dynamic authorization-free transmission configuration. For example, when the first dynamic authorization-free transmission configuration is associated with only one set of configuration information, the first configuration information can be that set of configuration information; when the first dynamic authorization-free transmission configuration is associated with multiple sets of configuration information, the first configuration information can be any one of the multiple sets of configuration information.

[0139] For example, there are two sets of dynamic authorization-free transmission configurations between a first terminal device and a first device, respectively designated as dynamic authorization-free transmission configuration A and dynamic authorization-free transmission configuration B. Dynamic authorization-free transmission configuration A is associated with two sets of configuration information, designated as configuration information a1 and configuration information a2, and dynamic authorization-free transmission configuration B is associated with two sets of configuration information, designated as configuration information b1 and configuration information b2. Assuming that the first terminal device and the first device originally used configuration information a1 of dynamic authorization-free transmission configuration A for data transmission, the first dynamic authorization-free transmission configuration can be dynamic authorization-free transmission configuration A, and the first configuration information can be configuration information a2. The first dynamic authorization-free transmission configuration can also be dynamic authorization-free transmission configuration B, and the first configuration information can be configuration information b1 or b2.

[0140] In one possible implementation, the retransmitted DCI / SCI sent by the first device to the first terminal device may include indication information for indicating the first configuration information of the first dynamic authorization-free transmission configuration. After the first terminal device receives the retransmitted DCI / SCI, it can determine the first configuration information of the first dynamic authorization-free transmission configuration based on the indication information. Thereafter, the first terminal device can use the first configuration information of the first dynamic authorization-free transmission configuration to perform dynamic authorization-free transmission with the first device.

[0141] In the above embodiment, the first device can add information for indicating that the DCI / SCI is used to configure the first dynamic authorization-free transmission configuration in the DCI / SCI originally used for retransmission, so that the DCI / SCI can be used to configure the first dynamic authorization-free transmission configuration at the same time. Accordingly, when the dynamic authorization-free transmission configuration between the first terminal device and the first device needs to be updated (or configured, reconfigured, activated, reactivated), the first device can update the dynamic authorization-free transmission configuration at the same time by sending the DCI / SCI to the first terminal device, without having to update the dynamic authorization-free transmission configuration by specifically sending RRC signaling or activation information to the first terminal device, thereby saving overhead. Moreover, the DCI / SCI belongs to the physical layer (or L1 layer) signaling, and the RRC signaling belongs to the high-layer signaling. The sending cycle of the DCI / SCI is shorter than that of the RRC signaling, thereby increasing the update speed of the dynamic authorization-free transmission configuration. In addition, the first terminal device has natural feedback on the DCI / SCI, so the first terminal device does not need to specifically confirm the dynamic authorization-free transmission configuration, thereby further reducing overhead.

[0142] In a possible implementation manner, the DCI / SCI includes a first indication field, and a first value of the first indication field is used to indicate that the DCI / SCI is used for retransmission.

[0143] The value of the first indication field in the DCI / SCI is used to indicate whether the DCI / SCI is used for retransmission. Exemplarily, when the value of the first indication field is a first value, it indicates that the DCI / SCI is used for retransmission; when the value of the first indication field is any value other than the first value, it indicates that the DCI / SCI is not used for retransmission.

[0144] After receiving the DCI / SCI, the first terminal device can determine whether the DCI / SCI is used for retransmission based on the first indication field in the DCI / SCI. Specifically, when the value of the first indication field in the DCI / SCI is the first value, the first terminal device can determine that the DCI / SCI is used for retransmission; when the value of the first indication field in the DCI / SCI is other than the first value, the first terminal device can determine that the DCI / SCI is not used for retransmission.

[0145] Optionally, the DCI / SCI may be scrambled using a specific radio network temporary identifier (RNTI). When the DCI / SCI is scrambled using a configured scheduling (CS) RNTI (denoted as CS-RNTI) and the value of the first indication field in the DCI / SCI is a first value, the first terminal device may determine that the DCI / SCI is for retransmission.

[0146] Optionally, the first indication field is a new data indicator (NDI) field, and the value of the NDI field in the DCI / SCI is used to indicate whether the DCI / SCI is used for retransmission. Exemplarily, when the value of the NDI field is 1, it indicates that the DCI / SCI is used for retransmission; when the value of the NDI field is 0, it indicates that the DCI / SCI is not used for retransmission.

[0147] In the above implementation, the first value of the first indication field in the DCI / SCI is used to indicate that the DCI / SCI is used for retransmission. Accordingly, the first terminal device can determine whether the DCI / SCI is used for retransmission based on the value of the first indication field.

[0148] In a possible implementation, the DCI / SCI includes a second indication field, and the second value of the second indication field is used to indicate that the DCI / SCI is used to configure the first dynamic grant-free transmission configuration.

[0149] The value of the second indication field in the DCI / SCI is used to indicate whether the DCI / SCI is used to configure the first dynamic grant-free transmission configuration. Exemplarily, when the value of the second indication field is the second value, it indicates that the DCI / SCI is used to configure the first dynamic grant-free transmission configuration; when the value of the second indication field is any value other than the second value, it indicates that the DCI / SCI is not used to configure the first dynamic grant-free transmission configuration.

[0150] After the first terminal device receives the DCI / SCI and determines that the DCI / SCI is used for retransmission, it can determine whether the DCI / SCI is also used to configure the first dynamic authorization-free transmission configuration based on the second indication field in the DCI / SCI. Specifically, when the value of the second indication field in the DCI / SCI is the second value, the first terminal device can determine that the DCI / SCI is used to configure the first dynamic authorization-free transmission configuration; when the value of the second indication field in the DCI / SCI is other than the second value, the first terminal device can determine that the DCI / SCI is not used to configure the first dynamic authorization-free transmission configuration.

[0151] Optionally, the second indication field is a modulation coding scheme (MCS) field, and the value of the MCS field in the DCI / SCI is used to indicate whether the DCI / SCI is used to configure the first dynamic authorization-free transmission configuration. The value of the MCS field can be the value of some bits or all bits in the MCS field.

[0152] In one possible implementation, the values ​​of some bits in the MCS field, such as the value of the most significant bit (MSB), are used to indicate whether the DCI / SCI is used to configure the first dynamic grant-free transmission configuration. Exemplarily, when the value of the MSB in the MCS field is 0, it indicates that the DCI / SCI is used to configure the first dynamic grant-free transmission configuration; and when the value of the MSB in the MCS field is 1, it indicates that the DCI / SCI is not used to configure the first dynamic grant-free transmission configuration.

[0153] In another possible implementation, the values ​​of all bits in the MCS field are used to indicate whether the DCI / SCI is used to configure the first dynamic grant-free transmission configuration. Exemplarily, when the values ​​of all bits in the MCS field are specific values ​​(e.g., values ​​in the range of 0 to 27), it indicates that the DCI / SCI is used to configure the first dynamic grant-free transmission configuration; when the values ​​of all bits in the MCS field are other than the specific value (e.g., values ​​in the range of 28 to 31), it indicates that the DCI / SCI is not used to configure the first dynamic grant-free transmission configuration.

[0154] Optionally, the second indication field may also be other indication fields, such as a new data indicator (NDI) or a redundancy version (RV) field.

[0155] In the above embodiment, the second value of the second indication field in the DCI / SCI is used to indicate that the DCI / SCI is used to configure the first dynamic authorization-free transmission configuration. Accordingly, the first terminal device can determine whether the DCI / SCI is used to configure the first dynamic authorization-free transmission configuration based on the value of the second indication field.

[0156] In another possible implementation, the DCI / SCI is scrambled using the RNTI, and the RNTI is used to indicate whether the DCI / SCI is used to configure the first dynamic grant-free transmission configuration. Exemplarily, when the RNTI is a specific identifier (e.g., RNTI-1), it indicates that the DCI / SCI is used to configure the first dynamic grant-free transmission configuration; when the RNTI is an identifier other than the specific identifier, it indicates that the DCI / SCI is not used to configure the first dynamic grant-free transmission configuration.

[0157] After the first terminal device receives the DCI / SCI and determines that the DCI / SCI is used for retransmission, it can determine whether the DCI / SCI is also used to configure the first dynamic authorization-free transmission configuration based on the RNTI used for the DCI / SCI scrambling. Specifically, when the RNTI used for the DCI / SCI scrambling is a specific identifier (such as RNTI-1), the first terminal device can determine that the DCI / SCI is used to configure the first dynamic authorization-free transmission configuration; when the RNTI used for the DCI / SCI scrambling is an identifier other than the specific identifier, the first terminal device can determine that the DCI / SCI is not used to configure the first dynamic authorization-free transmission configuration.

[0158] In the above embodiment, the RNTI used for DCI / SCI scrambling is used to indicate whether the DCI / SCI is used to configure the first dynamic authorization-free transmission configuration. Accordingly, the first terminal device can determine whether the DCI / SCI is used to configure the first dynamic authorization-free transmission configuration based on the RNTI.

[0159] In another possible implementation, after the first terminal device receives the DCI / SCI and determines that the DCI / SCI is used for retransmission, it can determine whether the DCI / SCI is also used to configure the first dynamic authorization-free transmission configuration based on the resources used for detecting or receiving the DCI / SCI. The resources here may include time domain resources and / or frequency domain resources, such as search space (SS), control resource set (CORESET), etc.

[0160] Exemplarily, when the first terminal device detects or receives the DCI / SCI on the first time-frequency resource, the first terminal device can determine that the DCI / SCI is used to configure the first dynamic authorization-free transmission configuration; when the first terminal device detects or receives the DCI / SCI on other time-frequency resources other than the first time-frequency resource, the first terminal device can determine that the DCI / SCI is not used to configure the first dynamic authorization-free transmission configuration.

[0161] In the above embodiment, the first terminal device can determine whether the DCI / SCI is used to configure the first dynamic authorization-free transmission configuration based on the resources used to detect or receive the DCI / SCI. Accordingly, there is no need to add information in the DCI / SCI specifically for indicating whether the DCI / SCI is used to configure the first dynamic authorization-free transmission configuration, which is conducive to reducing the indication overhead.

[0162] In a possible implementation, the DCI / SCI includes a third indication field, where the third indication field is used to indicate first configuration information of a first dynamic authorization-free transmission configuration, where the first configuration information includes at least one transmission resource and / or transmission parameter.

[0163] The value of the third indication field in the DCI / SCI may directly indicate the first configuration information of the first dynamic authorization-free transmission configuration, or may indirectly indicate the first configuration information of the first dynamic authorization-free transmission configuration by indicating an index of the first configuration information of the first dynamic authorization-free transmission configuration. The value of the third indication field may be the value of some or all bits in the third indication field.

[0164] Illustratively, the first dynamic authorization-free transmission configuration may be associated with multiple sets of configuration information, each set of configuration information may include at least one transmission resource and / or transmission parameter value, and different configuration information may include different values ​​of the transmission resource and / or transmission parameter. The first configuration information may specifically be one set of configuration information from the multiple sets of configuration information.

[0165] Among them, transmission resources may include but are not limited to time domain resources, frequency domain resources, spatial domain resources, code domain resources, demodulation reference signal resources, etc., and transmission parameters may include but are not limited to modulation and coding scheme, number of repeated transmissions, repeated transmission type, redundant version, precoding parameters, power control parameters, etc.

[0166] In one possible implementation, each set of configuration information in the above-mentioned multiple sets of configuration information has a corresponding index, and the mapping relationship between the value of the third indication field and the index of the multiple sets of configuration information can be pre-configured or pre-agreed, so that the value of the third indication field can be used to indicate the index of the configuration information, and different values ​​of the third indication field can indicate the index of different configuration information, that is, indicate different configuration information.

[0167] After receiving the DCI / SCI and determining that the DCI / SCI is used for retransmission and is also used to configure the first dynamic authorization-free transmission configuration, the first terminal device can determine the first configuration information of the first dynamic authorization-free transmission configuration based on the third indication field in the DCI / SCI. Specifically, the first terminal device can determine the corresponding configuration information index based on the value of the third indication field, and then determine the configuration information corresponding to the configuration information index as the first configuration information of the first dynamic authorization-free transmission configuration.

[0168] Optionally, the third indication field may include any one or more indication fields of the MCS field, the NDI field, and the RV field.

[0169] In the above implementation, the third indication field in the DCI / SCI is used to indicate the first configuration information of the first dynamic authorization-free transmission configuration, and the first terminal device can determine the first configuration information of the first dynamic authorization-free transmission configuration according to the third indication field.

[0170] In a possible implementation, the third indication field includes an indication field, and the indication field is used to indicate the first configuration information of the first dynamic authorization-free transmission configuration, or to indicate the index of the first configuration information of the first dynamic authorization-free transmission configuration.

[0171] Optionally, the third indication field is the MCS field, and the values ​​of some or all bits in the MCS field are used to indicate the first configuration information of the first dynamic authorization-free transmission configuration, or to indicate the index of the first configuration information of the first dynamic authorization-free transmission configuration.

[0172] For example, the first dynamic authorization-free transmission configuration is associated with two groups of configuration information, and the indexes of the first group of configuration information and the second group of configuration information are respectively a first index (for example, 0) and a second index (for example, 1). The value of a bit in the MCS field can be used to indicate the indexes of the two groups of configuration information. For example, when the value of the bit is 0, it indicates the first index, thereby indicating the first group of configuration information, that is, the indicated first configuration information is the first group of configuration information; when the value of the bit is 1, it indicates the second index, thereby indicating the second group of configuration information, that is, the indicated first configuration information is the second group of configuration information.

[0173] Optionally, each set of configuration information may specifically be a value of a transmission resource or transmission parameter, i.e., only one transmission resource or transmission parameter is configured. For example, each set of configuration information may be a value of a transmission parameter, where the transmission parameter is an MCS level. The first set of configuration information indicates an MCS level of 14, and the second set of configuration information indicates an MCS level of 10.

[0174] Optionally, each set of configuration information may specifically be the values ​​of multiple transmission resources and / or transmission parameters, that is, multiple transmission resources and / or transmission parameters may be configured. For example, each set of configuration information is a value combination of two transmission parameters, where the two transmission parameters are the MCS level and the number of repetitions (repetition number). The first set of configuration information is a first value combination {MCS: 14; repetition number: 2}, indicating that the MCS level is 14 and the number of repetitions is 2; the second set of configuration information is a second value combination {MCS: 10; repetition number: 4}, indicating that the MCS level is 10 and the number of repetitions is 4.

[0175] In the above embodiment, an indication field in the DCI / SCI is used to indicate the first configuration information of the first dynamic authorization-free transmission configuration, that is, one indication field can be used to indicate all transmission resources and / or transmission parameters in the first configuration information, thereby reducing the indication overhead. The first terminal device can determine all transmission resources and / or transmission parameters in the first configuration information at one time based on the indication field, which is conducive to improving the efficiency of obtaining the first configuration information.

[0176] In one possible embodiment, the third indication field includes multiple indication fields, each of the multiple indication fields is used to indicate corresponding transmission resources and / or transmission parameters, and the corresponding transmission resources and / or transmission parameters are included in the first configuration information of the first dynamic authorization-free transmission configuration.

[0177] Exemplarily, the first configuration information of the first dynamic authorization-free transmission configuration includes at least one transmission resource and / or transmission parameter, and the third indication field may include an indication field corresponding to each transmission resource and / or transmission parameter in the at least one transmission resource and / or transmission parameter, and the indication field corresponding to each transmission resource and / or transmission parameter is used to indicate the transmission resource and / or transmission parameter.

[0178] For example, the first configuration information of the first dynamic authorization-free transmission configuration includes a transmission resource and a transmission parameter, wherein the transmission resource is a time domain resource and the transmission parameter is MCS, then the third indication field may include a time domain resource allocation (TDRA) field for indicating the time domain resource and an MCS field for indicating the MCS.

[0179] Taking the MCS domain as an example, in one possible implementation, the values ​​of some bits in the MCS domain are used to indicate the MCS value. Specifically, for the first dynamic authorization-free transmission configuration, multiple MCS values ​​and a mapping relationship between the values ​​of some bits in the MCS domain and the multiple MCS values ​​can be pre-configured or pre-agreed, so that the values ​​of some bits in the MCS domain can be used to indicate the MCS value, and different values ​​of some bits in the MCS domain can indicate different MCS values.

[0180] For example, for the first dynamic authorization-free transmission configuration, two MCS values ​​(for example, 0 and 1, respectively) are pre-configured or pre-agreed, and the value of one bit in the MCS field can be used to indicate the two MCS values. For example, when the value of the bit is 0, it indicates that the MCS value is 0, and when the value of the bit is 1, it indicates that the MCS value is 1.

[0181] In another possible implementation, the values ​​of some bits in the MCS domain are used to indicate the index of the MCS value. Specifically, for the first dynamic authorization-free transmission configuration, multiple MCS values ​​can be pre-configured or pre-agreed, each MCS value has a corresponding index, and a mapping relationship between the values ​​of some bits in the MCS domain and the indexes of the multiple MCS values ​​is pre-configured or pre-agreed, so that the values ​​of some bits in the MCS domain can be used to indicate the index of the MCS value, and different values ​​of some bits in the MCS domain can indicate the indexes of different MCS values, that is, indicate different MCS values.

[0182] For example, for the first dynamic authorization-free transmission configuration, two MCS values ​​(e.g., 10 and 14, respectively) are pre-configured or pre-agreed, and their indexes are a first index (e.g., 0) and a second index (e.g., 1), respectively. The value of a bit in the MCS field can be used to indicate the indexes of the two MCS values. For example, when the value of the bit is 0, it indicates the first index, that is, it indicates that the MCS value is 10; when the value of the bit is 1, it indicates the second index, that is, it indicates that the MCS value is 14.

[0183] In another possible implementation, the values ​​of some bits in the MCS field are used to indicate MCS value adjustment information, where the MCS value adjustment information refers to adjustment information of the current MCS value relative to the previous MCS value. Specifically, multiple types of MCS value adjustment information and a mapping relationship between the values ​​of some bits in the MCS field and the multiple types of MCS value adjustment information can be pre-configured or pre-agreed upon, so that the values ​​of some bits in the MCS field can be used to indicate the MCS value adjustment information, and different values ​​of some bits in the MCS field can indicate different MCS value adjustment information.

[0184] For example, if three types of MCS value adjustment information are pre-configured or pre-agreed (e.g., no adjustment, upward adjustment, and downward adjustment), the values ​​of two bits in the MCS field can be used to indicate these three types of MCS value adjustment information. For example, when the values ​​of the two bits are 00, no adjustment is indicated; when the values ​​of the two bits are 01, upward adjustment is indicated; and when the values ​​of the two bits are 10, downward adjustment is indicated.

[0185] In addition, the adjustment granularity of the MCS value may be pre-configured or pre-agreed, and the adjustment granularity may be, but is not limited to, one level, two levels, etc. Assuming that the adjustment granularity of the MCS value is one level, and the previous MCS value is 5, then when the values ​​of the two bits in the above-mentioned MCS field are 00, it indicates that the current MCS value is the same as the previous MCS value, that is, it indicates that the current MCS value is 5; when the values ​​of the two bits in the above-mentioned MCS field are 01, it indicates that the current MCS value is adjusted upward by one level based on the previous MCS value, that is, it indicates that the current MCS value is 6; when the values ​​of the two bits in the above-mentioned MCS field are 10, it indicates that the current MCS value is adjusted downward by one level based on the previous MCS value, that is, it indicates that the current MCS value is 4.

[0186] In the above implementation, multiple indication fields corresponding to transmission resources and / or transmission parameters in DCI / SCI are used to indicate the first configuration information of the first dynamic authorization-free transmission configuration. The transmission resources and / or transmission parameters in the first configuration information can be indicated separately, which has good flexibility and is conducive to meeting the diverse needs of configuration information.

[0187] In one possible embodiment, the DCI / SCI includes a fourth indication field, which is used to indicate a first dynamic authorization-free transmission configuration. The fourth indication field corresponds to multiple dynamic authorization-free transmission configurations, and the first dynamic authorization-free transmission configuration is included in multiple dynamic authorization-free transmission configurations.

[0188] Optionally, when there are multiple (sets) of dynamic authorization-free transmission configurations, each dynamic authorization-free transmission configuration has a corresponding index, and the fourth indication field is used to indicate the index of the dynamic authorization-free transmission configuration. Specifically, the mapping relationship between the information of the fourth indication field and the indexes of the multiple dynamic authorization-free transmission configurations can be pre-configured or pre-agreed, so that the information of the fourth indication field can be used to indicate the index of the dynamic authorization-free transmission configuration, and different information of the fourth indication field can indicate the indexes of different dynamic authorization-free transmission configurations, that is, indicate different dynamic authorization-free transmission configurations.

[0189] After receiving the DCI / SCI and determining that the DCI / SCI is used for retransmission and is also used to configure the first dynamic authorization-free transmission configuration, the first dynamic authorization-free transmission configuration can be determined based on the fourth indication field in the DCI / SCI. Specifically, the first terminal device can determine the corresponding dynamic authorization-free transmission configuration index based on the information in the fourth indication field, and then determine the dynamic authorization-free transmission configuration corresponding to the dynamic authorization-free transmission configuration index as the first dynamic authorization-free transmission configuration.

[0190] Optionally, the fourth indication field is a hybrid automatic repeat request (HARQ) process field, and the HARQ process number indicated by the HARQ process field is used to indicate the index of the first dynamic grant-free transmission configuration, thereby indicating the first dynamic grant-free transmission configuration.

[0191] For example, assuming that there are two dynamic-free authorization transmission configurations, whose indexes are 0 and 1 respectively, the HARQ process number indicated by the HARQ process field can be used to indicate the indexes of the two dynamic-free authorization transmission configurations. Specifically, the association relationship between the HARQ process number indicated by the HARQ process field and the indexes of the two dynamic-free authorization transmission configurations can be pre-configured or pre-agreed. For example, the dynamic-free authorization transmission configuration with an index of 0 is associated with the HARQ process number 2, and the dynamic-free authorization transmission configuration with an index of 1 is associated with the HARQ process number 3. Then, when the HARQ process field indicates the HARQ process number 2, the first dynamic-free authorization transmission configuration is determined to be the dynamic-free authorization transmission configuration with an index of 0, and when the HARQ process field indicates the HARQ process number 3, the first dynamic-free authorization transmission configuration is determined to be the dynamic-free authorization transmission configuration with an index of 1.

[0192] In the above embodiment, when there are multiple dynamic authorization-free transmission configurations, the fourth indication field in the DCI / SCI is used to indicate the first dynamic authorization-free transmission configuration, and the terminal device can determine which of the multiple dynamic authorization-free transmission configurations needs to be configured according to the fourth indication field.

[0193] In a possible implementation manner, the DCI / SCI includes a fifth indication field, and the fifth indication field is used to indicate a modulation order of a current retransmission.

[0194] Optionally, multiple modulation orders and a mapping relationship between the value of the fifth indication field and the multiple modulation orders can be pre-configured or pre-agreed, so that the value of the fifth indication field can be used to indicate the modulation order, and different values ​​of the fifth indication field can indicate different modulation orders.

[0195] After the first terminal device receives the DCI / SCI and determines that the DCI / SCI is used for retransmission, it can determine the modulation order of the current retransmission based on the fifth indication field in the DCI / SCI. Specifically, the modulation order indicated by the value of the fifth indication field can be determined as the modulation order of the current retransmission.

[0196] Optionally, the fifth indication field is the MCS field, and the value of the fifth indication field can be the value of some bits or all bits in the MCS field, that is, the value of some bits or all bits in the MCS field can be used to indicate the modulation order of the current retransmission.

[0197] In a possible implementation, the values ​​of some bits in the MCS field, for example, the value of at least one least significant bit (LSB), are used to indicate the modulation order of the current retransmission.

[0198] For example, for retransmission, four modulation orders are pre-configured or pre-agreed, such as binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), 16 quadrature amplitude modulation (16QAM), and 64 quadrature amplitude modulation (64QAM). The values ​​of the two LSBs in the MCS domain can be used to indicate these four modulation orders. For example, when the values ​​of the two LSBs in the MCS domain are 00, it indicates BPSK; when the values ​​of the two LSBs in the MCS domain are 01, it indicates QPSK; when the values ​​of the two LSBs in the MCS domain are 10, it indicates 16QAM; and when the values ​​of the two LSBs in the MCS domain are 11, it indicates 64QAM.

[0199] In another possible implementation, the values ​​of all bits in the MCS field are used to indicate the modulation order of the current retransmission.

[0200] For example, for retransmission, four modulation orders (e.g., BPSK, QPSK, 16QAM, and 64QAM) are pre-configured or pre-agreed. The values ​​of all bits in the MCS field can be used to indicate these four modulation orders. For example, when the values ​​of all bits in the MCS field are 0 to 6, BPSK is indicated; when the values ​​of all bits in the MCS field are 7 to 13, QPSK is indicated; when the values ​​of all bits in the MCS field are 14 to 20, 16QAM is indicated; and when the values ​​of all bits in the MCS field are 21 to 27, 64QAM is indicated.

[0201] In the above implementation, the fifth indicator field in the DCI / SCI is used to indicate the modulation order of the current retransmission. Accordingly, the first terminal device can determine the modulation order to be used for the current retransmission according to the value of the fifth indicator field.

[0202] In a possible implementation manner, the fifth indication field is used to indicate adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the last retransmission.

[0203] For example, when the first device fails to correctly receive the data sent by the first terminal device for the Nth time (for example, recorded as the first data), the first device may instruct the first terminal device to retransmit the first data, where N is a positive integer. In this example, the current retransmission refers to the process of the first terminal device sending the first data for the N+1th time, and the initial transmission refers to the process of the first terminal device sending the first data for the first time. It can be understood that when N is greater than 1, the last retransmission refers to the process of the first terminal device sending the first data for the Nth time; when N is equal to 1, there is no last retransmission. Among them, the initial transmission uses a dynamic authorization-free transmission method, and the last retransmission can use a dynamic authorization-free transmission method or a dynamic authorization transmission method.

[0204] Optionally, multiple modulation order adjustment information and a mapping relationship between the value of the fifth indication field and the multiple modulation order adjustment information can be pre-configured or pre-agreed, wherein the modulation order adjustment information refers to the adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the last retransmission, so that the value of the fifth indication field can be used to indicate the modulation order adjustment information, and different values ​​of the fifth indication field can indicate different modulation order adjustment information.

[0205] After the first terminal device receives the DCI / SCI and determines that the DCI / SCI is used for retransmission, it can determine the target modulation order adjustment information based on the fifth indication field in the DCI / SCI. Specifically, the modulation order adjustment information indicated by the value of the fifth indication field can be determined as the target modulation order adjustment information. Then, the modulation order of the current retransmission can be determined based on the target modulation order adjustment information and the modulation order of the initial transmission or the last retransmission.

[0206] Optionally, the fifth indication field is the MCS field, and the value of the fifth indication field can be the value of some bits or all bits in the MCS field, that is, the value of some bits or all bits in the MCS field can be used to indicate the modulation order adjustment information.

[0207] In a possible implementation, the modulation order adjustment information is indicated by using values ​​of some bits in the MCS field, for example, the value of at least one least significant bit (LSB).

[0208] For example, for retransmission, three types of modulation order adjustment information are pre-configured or pre-agreed (e.g., no adjustment, upward adjustment, and downward adjustment). The values ​​of the two LSBs in the MCS field can be used to indicate these three types of modulation order adjustment information. For example, when the values ​​of the two LSBs in the MCS field are 00, it indicates no adjustment; when the values ​​of the two LSBs in the MCS field are 01, it indicates upward adjustment; and when the values ​​of the two LSBs in the MCS field are 10, it indicates downward adjustment.

[0209] In addition, the modulation order adjustment granularity may be pre-configured or pre-agreed, and the adjustment granularity may be, but is not limited to, one level, two levels, etc. For example, the levels of BPSK, QPSK, 16QAM, and 64QAM are increased in sequence, i.e., QPSK is one level higher than BPSK, 16QAM is one level higher than QPSK, and 64QAM is one level higher than 16QAM.

[0210] Assuming that the adjustment granularity of the modulation order is one level, and the modulation order of the initial transmission or the last retransmission is QPSK, then when the value of the two LSBs in the above-mentioned MCS domain is 00, it indicates that the modulation order of the current retransmission is the same as the modulation order of the initial transmission or the last retransmission, that is, it indicates that the modulation order of the current retransmission is QPSK; when the value of the two LSBs in the above-mentioned MCS domain is 01, it indicates that the modulation order of the current retransmission is adjusted upward by one level based on the modulation order of the initial transmission or the last retransmission, that is, it indicates that the modulation order of the current retransmission is 16QAM; when the value of the two bits in the above-mentioned MCS domain is 10, it indicates that the current MCS value is adjusted downward by one level based on the previous MCS value, that is, it indicates that the modulation order of the current retransmission is BPSK.

[0211] In the above embodiment, the fifth indicator field in the DCI / SCI is used to indicate the adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the previous retransmission. Accordingly, the first terminal device can determine the adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the previous retransmission based on the value of the fifth indicator field, and then determine the modulation order to be used for the current retransmission.

[0212] The following description is made by taking an example of a first type configured grant (Type 1 configured grant, Type 1CG) scenario in which the embodiment of the present application is applied to an uplink.

[0213] The network device may send configured grant configuration information to the first terminal device via RRC signaling in the following two ways:

[0214] Method 1: The authorization configuration information includes a first part of indication information and a second part of indication information.

[0215] Among them, the first part of the indication information is used to indicate the default or initial configuration of each transmission resource and transmission parameter. After the first terminal device receives the authorization configuration information, it can determine the transmission resources and transmission parameters to be used for dynamic authorization-free transmission based on the first part of the indication information, and perform dynamic authorization-free transmission based on the determined transmission resources and transmission parameters.

[0216] The second part of the indication information is used to indicate multiple configurations of a transmission resource or transmission parameter that can be configured through retransmission of DCI, or multiple configuration combinations of multiple transmission resources and / or transmission parameters. For example, the second part of the indication information can indicate the following four configuration combinations of two transmission parameters, namely, MCS and repetition number: {MCS: 13; repetition number: 1}, {MCS: 14; repetition number: 2}, {MCS: 15; repetition number: 4}, {MCS: 16; repetition number: 8}.

[0217] Method 2: The authorization configuration information is used to configure multiple values ​​for transmission resources that can be configured through retransmitted DCI or for transmission resources, one of which (e.g., the first value) is a default value or initial value. For example, four values ​​are configured for the MCS: {13, 14, 15, 16}, where 13 is the default value or initial value. After receiving the authorization configuration information, the first terminal device can determine the transmission resources and transmission parameters to be used for dynamic authorization-free transmission based on the configured default values ​​or initial values, and perform dynamic authorization-free transmission based on the determined transmission resources and transmission parameters.

[0218] After the first terminal device receives the retransmitted DCI, the modulation order used for retransmission can be determined based on the values ​​of some bits in the MCS field (e.g., the last two LSBs). It can be determined based on the values ​​of some bits in the MCS field (e.g., the MSB) whether the retransmitted DCI is used to configure the first dynamic authorization-free transmission configuration. If so, the first configuration information of the first dynamic authorization-free transmission configuration is further determined based on the values ​​of the remaining bits in the MCS field (e.g., bits excluding the MSB and the last two LSBs).

[0219] For example, in the NR system, the MCS field of the DCI contains 5 bits, of which the value of the 1 MSB is used to indicate whether the DCI is used to configure the first dynamic authorization-free transmission configuration, the value of the 2 LSBs is used to indicate the modulation order of the retransmission, and the value of the remaining 2 bits is used to indicate the first configuration information of the first dynamic authorization-free transmission configuration. In combination with method 1, the value of the remaining 2 bits is used to indicate one of the above-mentioned multiple configurations or multiple configuration combinations; in combination with method 2, the value of the remaining 2 bits is used to indicate one of the above-mentioned multiple values.

[0220] In the above description, the retransmitted DCI is used to configure the first dynamic grant-free transmission configuration, which can be understood as the retransmitted DCI is used to configure, or reconfigure, or activate, or reactivate the first dynamic grant-free transmission configuration.

[0221] In addition, the method for the first terminal device to determine that the DCI is for retransmission (i.e., determining that the DCI is a retransmission DCI) can be: when the DCI is scrambled with a specific RNTI and a specific field in the DCI is set to a specific value, the first terminal device determines that the DCI is for retransmission.

[0222] Exemplarily, after receiving DCI, the first terminal device determines whether the DCI is for retransmission and configures the first dynamic grant-free transmission configuration, as shown in Table 1 below:

[0223] Table 1

[0224] When the DCI is encrypted using CS-RNTI and the value of the NDI field in the DCI is 0, the first terminal device determines that the DCI is used to activate or deactivate the dynamic authorization-free transmission configuration. When the DCI is encrypted using CS-RNTI and the value of the NDI field in the DCI is 1, the first terminal device determines that the DCI is used for retransmission. On the basis that the DCI is encrypted using CS-RNTI and the value of the NDI field in the DCI is 1, if the value of the MSB of the MCS field in the DCI is 1, the first terminal device determines that the DCI is used for retransmission but not for configuring (or reconfiguring, or activating, or reactivating) the first dynamic authorization-free transmission configuration. On the basis that the DCI is encrypted using CS-RNTI and the value of the NDI field in the DCI is 1, if the value of the MSB of the MCS field in the DCI is 0, the first terminal device determines that the DCI is used for retransmission but not for configuring (or reconfiguring, or activating, or reactivating) the first dynamic authorization-free transmission configuration.

[0225] The above describes in detail the method of the embodiment of the present application. The following describes the device embodiment involved in the embodiment of the present application.

[0226] Please refer to FIG6 , which is a structural diagram of a configuration device for dynamic authorization-free transmission configuration provided in an embodiment of the present application.

[0227] As shown in Figure 6, the dynamic authorization-free transmission configuration configuration apparatus 600 may include a transceiver unit 601 and a processing unit 602. The transceiver unit 601 and the processing unit 602 may be software, hardware, or a combination of software and hardware.

[0228] The transceiver unit 601 can implement a sending function and / or a receiving function, and can also be described as a communication unit. The transceiver unit 601 can also be a unit that integrates an acquisition unit and a transmission unit, wherein the acquisition unit is used to implement the receiving function and the transmission unit is used to implement the transmission function. Optionally, the transceiver unit 601 can be used to receive information sent by other devices, and can also be used to send information to other devices.

[0229] In one possible design, the configuration device 600 for the dynamic authorization transmission configuration may correspond to the first terminal device in the above-mentioned method embodiment. For example, the configuration device 600 for the dynamic authorization transmission configuration may be the first terminal device in the method embodiment shown in FIG5 , or may be a chip in the first terminal device. The configuration device 600 for the dynamic authorization transmission configuration may include a unit for executing the operations performed by the first terminal device in the above-mentioned method embodiment, and each unit in the configuration device 600 for the dynamic authorization transmission configuration is respectively for implementing the operations performed by the first terminal device in the above-mentioned method embodiment. The description of each unit is as follows:

[0230] The transceiver unit 601 is configured to receive downlink control information / sidelink control information sent by a first device, where the downlink control information / sidelink control information is used for retransmission and for configuring a first dynamic grant-free transmission configuration;

[0231] The processing unit 602 is configured to determine first configuration information of the first dynamic authorization-free transmission configuration according to the downlink control information / sidelink control information.

[0232] In a possible implementation manner, the downlink control information / sidelink control information includes a first indication field, and a first value of the first indication field is used to indicate that the downlink control information / sidelink control information is for retransmission.

[0233] In a possible implementation manner, the downlink control information / sidelink control information includes a second indication field, and a second value of the second indication field is used to indicate that the downlink control information / sidelink control information is used to configure the first dynamic authorization-free transmission configuration.

[0234] In a possible implementation, the downlink control information / sidelink control information includes a third indication field, and the third indication field is used to indicate first configuration information of the first dynamic authorization-free transmission configuration, where the first configuration information includes at least one transmission resource and / or transmission parameter.

[0235] In one possible implementation, the third indication field includes one indication field, and the one indication field is used to indicate the first configuration information; or, the third indication field includes multiple indication fields, and each indication field in the multiple indication fields is used to indicate corresponding transmission resources and / or transmission parameters.

[0236] In one possible embodiment, the downlink control information / sidelink control information includes a fourth indication field, and the fourth indication field is used to indicate the first dynamic authorization-free transmission configuration. The fourth indication field corresponds to multiple dynamic authorization-free transmission configurations, and the first dynamic authorization-free transmission configuration is included in the multiple dynamic authorization-free transmission configurations.

[0237] In one possible embodiment, the downlink control information / sidelink control information includes a fifth indication field, and the fifth indication field is used to indicate the modulation order of the current retransmission, or the adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the previous retransmission.

[0238] In a possible implementation manner, the second indication field, the third indication field, or the fifth indication field is a modulation and coding scheme (MCS) field.

[0239] In another possible design, the configuration device 600 for dynamic authorization-free transmission configuration may correspond to the first device (network device / second terminal device) in the above-mentioned method embodiment. For example, the configuration device 600 for dynamic authorization-free transmission configuration may be the first device in the method embodiment shown in FIG5 , or may be a chip in the first device. The configuration device 600 for dynamic authorization-free transmission configuration may include a unit for executing the operations performed by the first device in the above-mentioned method embodiment, and each unit in the configuration device 600 for dynamic authorization-free transmission configuration is respectively for implementing the operations performed by the first device in the above-mentioned method embodiment. The description of each unit is as follows:

[0240] A processing unit 602 is configured to determine downlink control information / sidelink control information, where the downlink control information / sidelink control information is used for retransmission and for configuring a first dynamic grant-free transmission configuration;

[0241] The transceiver unit 601 is configured to send the downlink control information / sidelink control information to the terminal device.

[0242] In a possible implementation manner, the downlink control information / sidelink control information includes a first indication field, and a first value of the first indication field is used to indicate that the downlink control information / sidelink control information is for retransmission.

[0243] In a possible implementation manner, the downlink control information / sidelink control information includes a second indication field, and a second value of the second indication field is used to indicate that the downlink control information / sidelink control information is used to configure the first dynamic authorization-free transmission configuration.

[0244] In a possible implementation, the downlink control information / sidelink control information includes a third indication field, and the third indication field is used to indicate first configuration information of the first dynamic authorization-free transmission configuration, where the first configuration information includes at least one transmission resource and / or transmission parameter.

[0245] In one possible implementation, the third indication field includes one indication field, and the one indication field is used to indicate the first configuration information; or, the third indication field includes multiple indication fields, and each indication field in the multiple indication fields is used to indicate corresponding transmission resources and / or transmission parameters.

[0246] In one possible embodiment, the downlink control information / sidelink control information includes a fourth indication field, and the fourth indication field is used to indicate the first dynamic authorization-free transmission configuration. The fourth indication field corresponds to multiple dynamic authorization-free transmission configurations, and the first dynamic authorization-free transmission configuration is included in the multiple dynamic authorization-free transmission configurations.

[0247] In one possible embodiment, the downlink control information / sidelink control information includes a fifth indication field, and the fifth indication field is used to indicate the modulation order of the current retransmission, or the adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the previous retransmission.

[0248] In a possible implementation manner, the second indication field, the third indication field, or the fifth indication field is a modulation and coding scheme (MCS) field.

[0249] According to an embodiment of the present application, each unit in the device shown in Figure 6 can be separately or all merged into one or several other units to constitute, or one (some) unit therein can also be split into multiple smaller units in function to constitute, which can achieve the same operation without affecting the realization of the technical effects of the embodiments of the present application. The above-mentioned units are divided based on logical functions. In practical applications, the functions of a unit can also be implemented by multiple units, or the functions of multiple units can be implemented by one unit. In other embodiments of the present application, other units can also be included based on electronic equipment. In practical applications, these functions can also be implemented with the assistance of other units, and can be implemented by collaboration of multiple units.

[0250] It should be noted that the implementation of each unit may also refer to the corresponding description of the above method embodiment.

[0251] Please refer to Figure 7, which is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device 700 may include a memory 701 and a processor 702. Further optionally, the electronic device 700 may also include a communication interface 703 and a bus 704. The memory 701, processor 702, and communication interface 703 are connected to each other via bus 704. The communication interface 703 is used to exchange data with other devices.

[0252] Memory 701 is used to provide storage space for storing data such as an operating system and computer programs. Memory 701 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM).

[0253] The processor 702 is a module that performs arithmetic and logical operations, and can be one or more combinations of processing modules such as a central processing unit (CPU), a graphics processing unit (GPU), or a microprocessor unit (MPU). The processor 702 can also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0254] In one possible design, the electronic device 700 may correspond to the first terminal device in the above-mentioned method embodiment. For example, the electronic device 700 may be the first terminal device in the above-mentioned method embodiment, or may be a chip in the first terminal device. The electronic device 700 may include components for executing the operations performed by the first terminal device in the above-mentioned method embodiment. Furthermore, each component in the electronic device 700 may respectively implement the operations performed by the first terminal device in the above-mentioned method embodiment. The processor 702 calls the computer program stored in the memory 701 to execute the method shown in the above-mentioned method embodiment.

[0255] In another possible design, the electronic device 700 may correspond to the first device in the above method embodiment. For example, the electronic device 700 may be the first device in the above method embodiment, or may be a chip in the first device. The electronic device 700 may include components for executing the operations performed by the first device in the above method embodiment, and each component in the electronic device 700 may respectively implement the operations performed by the first device in the above method embodiment. The processor 702 calls the computer program stored in the memory 701 to execute the method shown in the above method embodiment.

[0256] In the case where the electronic device may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in FIG8 .

[0257] As shown in Figure 8 , chip 800 includes a processor 801 and an interface 802. There may be one or more processors 801, and there may be multiple interfaces 802. It should be noted that the functions corresponding to processor 801 and interface 802 can be implemented through hardware design, software design, or a combination of hardware and software, without limitation.

[0258] Optionally, the chip 800 may further include a memory 803 , which is used to store necessary program instructions and data.

[0259] In the present application, processor 801 may be configured to call from memory 803 a program for implementing a method for configuring a dynamic authorization-free transmission configuration in an electronic device according to one or more embodiments of the present application, and execute the instructions contained in the program. Interface 802 may be configured to output the execution results of processor 801. In the present application, interface 802 may be specifically configured to output various messages or information from processor 801.

[0260] Regarding the configuration method of dynamic authorization-free transmission configuration provided by one or more embodiments of the present application, please refer to the above-mentioned method embodiments and will not be repeated here.

[0261] According to the method provided in the embodiment of the present application, the embodiment of the present application also provides a computer-readable storage medium, which stores a computer program or instruction. When the computer program or instruction runs on a processor, the method shown in the above method embodiment can be implemented.

[0262] According to the method provided in the embodiment of the present application, the embodiment of the present application also provides a computer program product, which includes a computer program or instructions. When the computer program or instructions are run on a processor, the method shown in the above method embodiment can be implemented.

[0263] According to the method provided in the embodiment of the present application, the embodiment of the present application also provides a system, which includes at least one configuration device 600 or electronic device 700 or chip 800 for the above-mentioned dynamic authorization-free transmission configuration.

[0264] According to the method provided in an embodiment of the present application, an embodiment of the present application also provides a system, which includes a terminal device and a first device, wherein the terminal device is used to execute the steps performed by the first terminal device in the above method embodiment, and the first device is used to execute the steps performed by the first device in the above method embodiment.

[0265] It should be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a hard disk drive (HDD), a solid-state drive (SSD), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0266] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. 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 that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0267] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments provided herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0268] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0269] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0270] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0271] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0272] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the technology or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0273] The above is only a specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed in this application, which should be covered by the scope of protection of the present application.

Claims

1. A configuration method for dynamic authorization-free transmission configuration, characterized in that: include: Receiving downlink control information / sidelink control information sent by the first device, where the downlink control information / sidelink control information is used for retransmission and for configuring a first dynamic authorization-free transmission configuration; The first configuration information of the first dynamic authorization-free transmission configuration is determined according to the downlink control information / sidelink control information.

2. The method according to claim 1, characterized in that: The downlink control information / sidelink control information includes a first indication field, and a first value of the first indication field is used to indicate that the downlink control information / sidelink control information is used for retransmission.

3. The method according to claim 1 or 2, characterized in that: The downlink control information / sidelink control information includes a second indication field, and a second value of the second indication field is used to indicate that the downlink control information / sidelink control information is used to configure the first dynamic authorization-free transmission configuration.

4. The method according to any one of claims 1 to 3, characterized in that The downlink control information / sidelink control information includes a third indication field, and the third indication field is used to indicate first configuration information of the first dynamic authorization-free transmission configuration, and the first configuration information includes at least one transmission resource and / or transmission parameter.

5. The method according to claim 4, characterized in that The third indication field includes one indication field, and the one indication field is used to indicate the first configuration information; or, The third indication field includes multiple indication fields, and each indication field in the multiple indication fields is used to indicate corresponding transmission resources and / or transmission parameters.

6. The method according to any one of claims 1 to 5, characterized in that The downlink control information / sidelink control information includes a fourth indication field, and the fourth indication field is used to indicate the first dynamic authorization-free transmission configuration. The fourth indication field corresponds to multiple dynamic authorization-free transmission configurations, and the first dynamic authorization-free transmission configuration is included in the multiple dynamic authorization-free transmission configurations.

7. The method according to any one of claims 1 to 6, characterized in that The downlink control information / sidelink control information includes a fifth indication field, and the fifth indication field is used to indicate the modulation order of the current retransmission, or adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the last retransmission.

8. The method according to any one of claims 3, 4 and 7, characterized in that The second indication field, the third indication field or the fifth indication field is a modulation and coding scheme MCS field.

9. A method for configuring a dynamic authorization-free transmission configuration, characterized in that: include: Determine downlink control information / sidelink control information, where the downlink control information / sidelink control information is used for retransmission and for configuring a first dynamic grant-free transmission configuration; The downlink control information / sidelink control information is sent to the terminal device.

10. The method according to claim 9, characterized in that The downlink control information / sidelink control information includes a first indication field, and a first value of the first indication field is used to indicate that the downlink control information / sidelink control information is used for retransmission.

11. The method according to claim 9 or 10, characterized in that: The downlink control information / sidelink control information includes a second indication field, and a second value of the second indication field is used to indicate that the downlink control information / sidelink control information is used to configure the first dynamic authorization-free transmission configuration.

12. The method according to any one of claims 9 to 11, characterized in that The downlink control information / sidelink control information includes a third indication field, and the third indication field is used to indicate first configuration information of the first dynamic authorization-free transmission configuration, and the first configuration information includes at least one transmission resource and / or transmission parameter.

13. The method according to claim 12, characterized in that The third indication field includes one indication field, and the one indication field is used to indicate the first configuration information; or, The third indication field includes multiple indication fields, and each indication field in the multiple indication fields is used to indicate corresponding transmission resources and / or transmission parameters.

14. The method according to any one of claims 9 to 13, characterized in that The downlink control information / sidelink control information includes a fourth indication field, and the fourth indication field is used to indicate the first dynamic authorization-free transmission configuration. The fourth indication field corresponds to multiple dynamic authorization-free transmission configurations, and the first dynamic authorization-free transmission configuration is included in the multiple dynamic authorization-free transmission configurations.

15. The method according to any one of claims 9 to 14, characterized in that The downlink control information / sidelink control information includes a fifth indication field, and the fifth indication field is used to indicate the modulation order of the current retransmission, or adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the last retransmission.

16. The method according to any one of claims 11, 12 and 15, characterized in that The second indication field, the third indication field or the fifth indication field is a modulation and coding scheme MCS field.

17. A configuration device for dynamic authorization-free transmission configuration, characterized in that: include: A transceiver unit, configured to receive downlink control information / sidelink control information sent by a first device, wherein the downlink control information / sidelink control information is used for retransmission and for configuring a first dynamic authorization-free transmission configuration; A processing unit is used to determine the first configuration information of the first dynamic authorization-free transmission configuration according to the downlink control information / sidelink control information.

18. The device according to claim 17, characterized in that The downlink control information / sidelink control information includes a first indication field, and a first value of the first indication field is used to indicate that the downlink control information / sidelink control information is used for retransmission.

19. The device according to claim 17 or 18, characterized in that The downlink control information / sidelink control information includes a second indication field, and a second value of the second indication field is used to indicate that the downlink control information / sidelink control information is used to configure the first dynamic authorization-free transmission configuration.

20. The device according to any one of claims 17 to 19, characterized in that The downlink control information / sidelink control information includes a third indication field, and the third indication field is used to indicate first configuration information of the first dynamic authorization-free transmission configuration, and the first configuration information includes at least one transmission resource and / or transmission parameter.

21. The device according to claim 20, characterized in that The third indication field includes one indication field, and the one indication field is used to indicate the first configuration information; or, The third indication field includes multiple indication fields, and each indication field in the multiple indication fields is used to indicate corresponding transmission resources and / or transmission parameters.

22. The device according to any one of claims 17 to 21, characterized in that The downlink control information / sidelink control information includes a fourth indication field, and the fourth indication field is used to indicate the first dynamic authorization-free transmission configuration. The fourth indication field corresponds to multiple dynamic authorization-free transmission configurations, and the first dynamic authorization-free transmission configuration is included in the multiple dynamic authorization-free transmission configurations.

23. The device according to any one of claims 17 to 22, characterized in that The downlink control information / sidelink control information includes a fifth indication field, and the fifth indication field is used to indicate the modulation order of the current retransmission, or adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the last retransmission.

24. The device according to any one of claims 19, 20 and 23, characterized in that The second indication field, the third indication field or the fifth indication field is a modulation and coding scheme MCS field.

25. A configuration device for dynamic authorization-free transmission configuration, characterized in that: include: a processing unit, configured to determine downlink control information / sidelink control information, wherein the downlink control information / sidelink control information is used for retransmission and for configuring a first dynamic grant-free transmission configuration; The transceiver unit is used to send the downlink control information / sidelink control information to the first terminal device.

26. The device according to claim 25, characterized in that The downlink control information / sidelink control information includes a first indication field, and a first value of the first indication field is used to indicate that the downlink control information / sidelink control information is used for retransmission.

27. The device according to claim 25 or 26, characterized in that The downlink control information / sidelink control information includes a second indication field, and a second value of the second indication field is used to indicate that the downlink control information / sidelink control information is used to configure the first dynamic authorization-free transmission configuration.

28. The device according to any one of claims 25 to 27, characterized in that The downlink control information / sidelink control information includes a third indication field, and the third indication field is used to indicate first configuration information of the first dynamic authorization-free transmission configuration, and the first configuration information includes at least one transmission resource and / or transmission parameter.

29. The device according to claim 28, characterized in that The third indication field includes one indication field, and the one indication field is used to indicate the first configuration information; or, The third indication field includes multiple indication fields, and each indication field in the multiple indication fields is used to indicate corresponding transmission resources and / or transmission parameters.

30. The device according to any one of claims 25 to 29, characterized in that The downlink control information / sidelink control information includes a fourth indication field, and the fourth indication field is used to indicate the first dynamic authorization-free transmission configuration. The fourth indication field corresponds to multiple dynamic authorization-free transmission configurations, and the first dynamic authorization-free transmission configuration is included in the multiple dynamic authorization-free transmission configurations.

31. The device according to any one of claims 25 to 30, characterized in that The downlink control information / sidelink control information includes a fifth indication field, and the fifth indication field is used to indicate the modulation order of the current retransmission, or adjustment information of the modulation order of the current retransmission relative to the modulation order of the initial transmission or the last retransmission.

32. The device according to any one of claims 27, 28 and 31, characterized in that The second indication field, the third indication field or the fifth indication field is a modulation and coding scheme MCS field.

33. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program or instructions, and when the computer program or instructions are executed, the method according to any one of claims 1 to 8 is implemented, or the method according to any one of claims 9 to 16 is implemented.

34. A computer program product, characterized in that The method comprises a computer program or an instruction, which, when executed, enables the method according to any one of claims 1 to 8 to be implemented, or the method according to any one of claims 9 to 16 to be implemented.

35. A system, characterized in that: It comprises a terminal device and a first device; the terminal device is used to execute the method as claimed in any one of claims 1 to 8, and the first device is used to execute the method as claimed in any one of claims 9 to 16.

36. A chip, characterized in that: The method comprises a processor, wherein the processor is configured to execute a computer program or an instruction. When the processor executes the computer program or the instruction, the method according to any one of claims 1 to 8 is implemented, or the method according to any one of claims 9 to 16 is implemented.

37. A chip, characterized in that: The method comprises a logic circuit and an input / output interface, wherein the logic circuit is used to couple with the input / output interface and transmit data through the input / output interface to execute the method according to any one of claims 1 to 8 or the method according to any one of claims 9 to 16.

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