Grant-free transmission activation method and apparatus

Abstract

The present application provides a grant-free transmission activation method and an apparatus. In the method, when retransmission scheduling DCI is used for simultaneously activating grant-free transmission, a terminal can determine, on the basis of the retransmission scheduling DCI, an application mode of applying a first parameter, and determine that the application mode is consistent with an application mode of a network device applying the first parameter. The consistency of the network device and the terminal applying the used first parameter avoids physical uplink shared channel (PUSCH) retransmission failure and / or grant-free transmission failure.

Description

Authorization-free transmission activation method and device Technical Field

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

[0002] In order to perform dynamic grant (grant based) transmission or grant-free (grant-free or transmission without dynamic grant / scheduling) transmission, the base station needs to configure a series of high-level parameters for the terminal (such as transmission mode, power control, time-frequency domain resource allocation method and other parameters). For example, the base station usually configures high-level parameters for dynamic grant transmission and grant-free transmission separately. In order to ensure the reliability of grant-free transmission, the base station can send downlink control information (downlink control information, DCI) to allow the terminal to retransmit the physical uplink shared channel (physical uplink shared channal, PUSCH) or receive physical downlink shared channel (physical downlink shared channal, PDSCH) retransmission. When the retransmission scheduling DCI is also used to activate grant-free transmission, how to avoid physical uplink shared channel (physical uplink shared channal, PUSCH) retransmission failure and / or grant-free transmission failure becomes a problem to be solved.

[0003] Summary of the Invention

[0004] The present application provides a method and device for activating unlicensed transmission, which can distinguish and reuse multiple layers of data streams processed by the same neural network.

[0005] In a first aspect, the present application provides a method for activating unauthorized transmission, which is performed by a first device. The first device may be a terminal, a component of a terminal (such as a processor, a chip, or a chip system, etc.), or a logic module that can implement all or part of the terminal functions. The first device receives retransmission scheduling downlink control information DCI, which is used to activate unauthorized transmission. The first device determines an application method of a first parameter based on the retransmission scheduling DCI; the first parameter includes configuration parameters for unauthorized transmission and / or configuration parameters for dynamic authorized transmission. The first device applies the first parameter based on the application method.

[0006] In this method, when the retransmission scheduling DCI is also used to activate grant-free transmission, the terminal can determine, based on the retransmission scheduling DCI, an application method for applying the first parameter, and determine that the application method is consistent with the application method of the first parameter by the base station. This ensures that the base station and the terminal consistently apply the first parameter, thereby avoiding physical uplink shared channel (PUSCH) retransmission failures and / or grant-free transmission failures.

[0007] In a possible implementation, there is a first correspondence between resources used for receiving the retransmission scheduling DCI and an application mode of the first parameter. The first device determines the application mode of the first parameter based on the resources used for receiving the retransmission scheduling DCI and the first correspondence.

[0008] In one possible implementation, the first correspondence includes one or more of the following: a correspondence between the radio network temporary identifier RNTI used for receiving the retransmission scheduling DCI and the application method of the first parameter; a correspondence between the DCI format used for receiving the retransmission scheduling DCI and the application method of the first parameter; a correspondence between the time domain resources used for receiving the retransmission scheduling DCI and the application method of the first parameter; and a correspondence between the frequency domain resources used for receiving the retransmission scheduling DCI and the application method of the first parameter.

[0009] In the above method, the terminal and the base station can preset a first correspondence relationship so that when the terminal receives the retransmission scheduling DCI, it can determine the application mode of the first parameter (equivalent to implicitly indicating the application mode of the first parameter) based on the relevant parameters of the received retransmission scheduling DCI (such as the scrambled RNTI, DCI format, time-frequency domain resources, etc.), and the application mode is consistent with the application mode of the first parameter applied by the base station. The base station and the terminal then have consistent application of the first parameter used, which can avoid physical uplink shared channel PUSCH retransmission failure and / or unauthorized transmission failure.

[0010] In one possible implementation, the first device determines an application mode of the first parameter based on part or all of information bits in a designated field in a retransmission scheduling DCI, wherein the designated field includes one or more of a modulation and coding scheme (MCS) field, a redundancy version (RV) field, and a new data indication (NDI) field.

[0011] In this method, the terminal can determine the application method of the first parameter based on the indication of the retransmission scheduling DCI, such as an explicit indication, in which the application method of the first parameter is directly indicated by the information bit in the retransmission scheduling DCI, and the application method is consistent with the application method of the first parameter by the base station.

[0012] In one possible implementation, the first parameter is applied in one or more of the following ways:

[0013] There is at least one first configuration parameter. When the network device configures the first configuration parameter for both dynamic authorization transmission and authorization-free transmission of the terminal, the configuration of the first configuration parameter in the dynamic authorization transmission is applied;

[0014] When the network device configures the second configuration parameter for both the dynamic authorized transmission and the authorization-free transmission of the terminal, the configuration of the second configuration parameter in the authorization-free transmission is applied.

[0015] In this method, the terminal and the base station can preset the rules satisfied by the application method of the first parameter. When the corresponding parameters are carried in the retransmission scheduling DCI, for example, the retransmission scheduling DCI includes the first configuration parameter, the terminal and the base station determine to apply the configuration of the first configuration parameter in the dynamic authorization transmission and will not apply the configuration of the first configuration parameter in the unauthorized transmission, thereby ensuring that the base station and the terminal have consistency in the application of the first parameter used, and avoiding physical uplink shared channel PUSCH retransmission failure and / or unauthorized transmission failure.

[0016] In one possible implementation, the first device applies the first parameter based on the application mode, including one or more of the following:

[0017] Determine, based on the first parameter, a length of a field corresponding to the retransmission scheduling DCI;

[0018] retransmitting based on the first parameter;

[0019] Based on the first parameter, authorization-free transmission is performed.

[0020] In this method, the terminal can perform specific operations based on the first parameter, such as retransmission or grant-free transmission, thereby achieving simultaneous scheduling of retransmission or grant-free transmission through retransmission scheduling DCI.

[0021] In a possible implementation manner, the retransmission scheduling DCI is a DCI used to schedule retransmission of an initial grant-free transmission.

[0022] In one possible implementation, the authorization-free transmission includes one or more of the following: configured authorized transmission CG, semi-static scheduling SPS, transmission based on pre-configured uplink resources PUR, and small data transmission CG-SDT in configured authorized transmission.

[0023] In the second aspect, the present application provides a method for activating unlicensed transmission, which is performed by a second device. The second device may be a network device, a component of a network device (such as a processor, a chip, or a chip system, etc.), or a logic module that can implement all or part of the functions of the network device. The second device determines the application method of the first parameter, and the first parameter includes the configuration parameters of the unlicensed transmission and / or the configuration parameters of the dynamic authorized transmission. The second device determines the retransmission scheduling downlink control information DCI, which is used to activate the unlicensed transmission and is associated with the application method of the first parameter. The second device sends the retransmission scheduling DCI.

[0024] In this method, when the retransmission scheduling DCI is also used to activate unauthorized transmission, the base station can also use the retransmission scheduling DCI to indicate to the terminal how to apply the first parameter, so that the base station and the terminal have consistency in the application of the first parameter used, thereby avoiding physical uplink shared channel PUSCH retransmission failure and / or unauthorized transmission failure.

[0025] In one possible implementation, some or all of the information bits in a designated field in the retransmission scheduling DCI are used to indicate an application mode of the first parameter, wherein the designated field includes one or more of a modulation and coding scheme (MCS) field, a redundancy version (RV) field, and a new data indication (NDI) field.

[0026] In this method, the application mode of the first parameter is directly indicated through information bits in the retransmission scheduling DCI (that is, explicitly indicated), so that the terminal and the base station apply the first parameter in the same manner.

[0027] In one possible implementation, the first parameter is applied in one or more of the following ways:

[0028] There is at least one first configuration parameter. When the network device configures the first configuration parameter for both dynamic authorization transmission and authorization-free transmission of the terminal, the configuration of the first configuration parameter in the dynamic authorization transmission is applied;

[0029] When the network device configures the second configuration parameter for both the dynamic authorized transmission and the authorization-free transmission of the terminal, the configuration of the second configuration parameter in the authorization-free transmission is applied.

[0030] In this method, the terminal and the base station can preset the rules satisfied by the application method of the first parameter. When the corresponding parameters are carried in the retransmission scheduling DCI, for example, the retransmission scheduling DCI includes the first configuration parameter, the terminal and the base station determine to apply the configuration of the first configuration parameter in the dynamic authorization transmission and will not apply the configuration of the first configuration parameter in the unauthorized transmission, thereby ensuring that the base station and the terminal have consistency in the application of the first parameter used, and avoiding physical uplink shared channel PUSCH retransmission failure and / or unauthorized transmission failure.

[0031] In a possible implementation manner, the retransmission scheduling DCI is a DCI used to schedule retransmission of an initial grant-free transmission.

[0032] In one possible implementation, the authorization-free transmission includes one or more of the following: configured authorized transmission CG, semi-static scheduling SPS, transmission based on pre-configured uplink resources PUR, and small data transmission CG-SDT in configured authorized transmission.

[0033] In a third aspect, the present application provides a communication device. The communication device may be a terminal, a device for a terminal, or a device capable of being used in conjunction with a terminal. In one possible implementation, the communication device may include a functional module, which may be implemented as a hardware circuit, software, or a combination of hardware circuits and software.

[0034] In one possible implementation, the communication device includes a communication unit and a processing unit. The communication unit is configured to receive retransmission scheduling downlink control information (DCI), where the retransmission scheduling DCI is used to activate ungranted transmission. The processing unit is configured to determine, based on the retransmission scheduling DCI, an application mode for a first parameter; the first parameter includes configuration parameters for ungranted transmission and / or configuration parameters for dynamic granted transmission. The processing unit is further configured to apply the first parameter based on the application mode.

[0035] In one possible implementation, there is a first correspondence between resources used for receiving the retransmission scheduling DCI and an application mode of the first parameter. The processing unit is configured to determine an application mode of the first parameter based on the resources used for receiving the retransmission scheduling DCI and the first correspondence.

[0036] In one possible implementation, the first correspondence includes one or more of the following: a correspondence between the radio network temporary identifier RNTI used for receiving the retransmission scheduling DCI and the application method of the first parameter; a correspondence between the DCI format used for receiving the retransmission scheduling DCI and the application method of the first parameter; a correspondence between the time domain resources used for receiving the retransmission scheduling DCI and the application method of the first parameter; and a correspondence between the frequency domain resources used for receiving the retransmission scheduling DCI and the application method of the first parameter.

[0037] In one possible implementation, the processing unit is configured to determine an application mode of the first parameter based on some or all information bits of a designated field in the retransmission scheduling DCI, wherein the designated field includes one or more of a modulation and coding scheme (MCS) field, a redundancy version (RV) field, and a new data indication (NDI) field.

[0038] In one possible implementation, the first parameter is applied in one or more of the following ways:

[0039] There is at least one first configuration parameter. When the network device configures the first configuration parameter for both dynamic authorization transmission and authorization-free transmission of the terminal, the configuration of the first configuration parameter in the dynamic authorization transmission is applied;

[0040] When the network device configures the second configuration parameter for both the dynamic authorized transmission and the authorization-free transmission of the terminal, the configuration of the second configuration parameter in the authorization-free transmission is applied.

[0041] In one possible implementation, the processing unit is configured to apply the first parameter based on the application mode, including one or more of the following:

[0042] Determine, based on the first parameter, a length of a field corresponding to the retransmission scheduling DCI;

[0043] retransmitting based on the first parameter;

[0044] Based on the first parameter, authorization-free transmission is performed.

[0045] In a possible implementation manner, the retransmission scheduling DCI is a DCI used to schedule retransmission of an initial grant-free transmission.

[0046] In one possible implementation, the authorization-free transmission includes one or more of the following: configured authorized transmission CG, semi-static scheduling SPS, transmission based on pre-configured uplink resources PUR, and small data transmission CG-SDT in configured authorized transmission.

[0047] In a fourth aspect, the present application provides a communication device. The communication device may be a network device, a device of a network device, or a device capable of being used in conjunction with a network device. In one possible implementation, the communication device may include a functional module, which may be implemented as a hardware circuit, software, or a combination of hardware circuit and software.

[0048] In one possible implementation, the communication device includes a communication unit and a processing unit. The processing unit is configured to determine an application mode of a first parameter, wherein the first parameter includes configuration parameters for grant-free transmission and / or configuration parameters for dynamic grant transmission. The processing unit is further configured to determine retransmission scheduling downlink control information (DCI), which is used to activate grant-free transmission and is associated with the application mode of the first parameter. The communication unit is configured to send the retransmission scheduling DCI.

[0049] In one possible implementation, some or all of the information bits in a designated field in the retransmission scheduling DCI are used to indicate an application mode of the first parameter, wherein the designated field includes one or more of a modulation and coding scheme (MCS) field, a redundancy version (RV) field, and a new data indication (NDI) field.

[0050] In one possible implementation, the first parameter is applied in one or more of the following ways:

[0051] There is at least one first configuration parameter. When the network device configures the first configuration parameter for both dynamic authorization transmission and authorization-free transmission of the terminal, the configuration of the first configuration parameter in the dynamic authorization transmission is applied;

[0052] When the network device configures the second configuration parameter for both the dynamic authorized transmission and the authorization-free transmission of the terminal, the configuration of the second configuration parameter in the authorization-free transmission is applied.

[0053] In a possible implementation manner, the retransmission scheduling DCI is a DCI used to schedule retransmission of an initial grant-free transmission.

[0054] In one possible implementation, the authorization-free transmission includes one or more of the following: configured authorized transmission CG, semi-static scheduling SPS, transmission based on pre-configured uplink resources PUR, and small data transmission CG-SDT in configured authorized transmission.

[0055] For the third and fourth aspects, as an example, the processing unit may be a processor, and the communication unit may be a transceiver unit, a transceiver, or a communication interface. It is understood that when the communication device is a communication device (such as a terminal or a network device), the communication unit may be a transceiver in the communication device (for example, a transceiver includes a transmitter and a receiver), for example, implemented by an antenna, a feeder, and a codec in the communication device, or, if the communication device is a chip provided in the device, the processing unit may be a processing circuit, a logic circuit, etc. of the chip, and the communication unit may be an input / output interface of the chip, such as an input / output circuit, a pin, etc.

[0056] In a fifth aspect, the present application provides a communication device, comprising: a processor configured to execute instructions; optionally, the communication device further comprising a memory configured to store the instructions, wherein when the instructions are executed by the processor, the communication device implements the method of the first and second aspects, as well as any possible implementation of the first and second aspects. Optionally, the processor and the memory are coupled.

[0057] In a sixth aspect, the present application provides a communication system, which includes multiple devices or equipment in the above-mentioned third to fifth aspects, so that the devices or equipment execute the methods in the first and second aspects, as well as any possible implementation of the first and second aspects.

[0058] In a seventh aspect, the present application provides a computer-readable storage medium storing instructions, which, when executed on a computer, enables the computer to execute the method of the first aspect and the second aspect, as well as any possible implementation of the first aspect and the second aspect.

[0059] In an eighth aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, enable the computer to execute the method of the first aspect and the second aspect, as well as any possible implementation of the first aspect and the second aspect.

[0060] In a ninth aspect, the present application provides a chip comprising a processor (or a logic circuit). Optionally, the chip may further comprise a communication interface (or interface) for implementing the above-mentioned first and second aspects, and the method in any one of the possible implementations of the first and second aspects. In one possible implementation, if the chip is the smallest processing unit in the entire machine, the chip may be a processor, or may comprise a processor and a memory, or may comprise a processor, a memory, and a transceiver, for implementing the above-mentioned first and second aspects, and the method in any one of the possible implementations of the first and second aspects.

[0061] In a tenth aspect, the present application provides a chip system. The chip system includes a processor and an interface. Optionally, it may also include a memory for implementing the methods of the first and second aspects above, as well as any possible implementation of the first and second aspects. The chip system may be composed of a chip alone, or may include a chip and other discrete components. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] FIG1 is a schematic diagram of a communication system provided by the present application;

[0063] FIG2 is a schematic diagram of a data transmission process based on dynamic authorization;

[0064] FIG3 is a schematic diagram of the first type of configuration authorization and the second type of configuration authorization;

[0065] FIG4 is a flow chart of a method for authorization-free transmission activation provided by the present application;

[0066] FIG5 is a schematic diagram of information bits of the MCS field in a retransmission scheduling DCI provided by the present application;

[0067] FIG6 is a schematic diagram of a communication device provided by the present application;

[0068] FIG7 is a schematic diagram of another communication device provided in this application. DETAILED DESCRIPTION

[0069] In the embodiments of this application, " / " can indicate that the associated objects are in an "or" relationship. For example, A / B can mean A or B. "And / or" can be used to describe the existence of three relationships between associated objects. For example, "A and / or B" can mean: A exists alone, A and B exists simultaneously, or B exists alone. A and B can be singular or plural. To facilitate the description of the technical solutions of the embodiments of this application, the words "first" and "second" may be used in the embodiments of this application to distinguish between technical features with the same or similar functions. The words "first" and "second" do not limit the quantity or order of execution, and the words "first" and "second" do not necessarily mean different. In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. The use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner to facilitate understanding.

[0070] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0071] In order to ensure consistency in the high-level parameters used by the base station and the terminal, the present application provides a method for activating unlicensed transmission, in which the terminal can determine the application method of the high-level parameters based on the retransmission scheduling DCI sent by the base station, so that the base station and the terminal both apply the high-level parameters in the same application method, thereby avoiding physical uplink shared channel retransmission failure and / or unlicensed transmission failure.

[0072] The authorization-free transmission activation method provided in this application can be applied to the communication system shown in Figure 1. For example, the communication system includes a network device and a terminal. Figure 1 only describes one network device and multiple terminals (such as terminals 1-6) as an example. This application does not limit the number of network devices and terminals.

[0073] Among them, the communication system of the present application may include but is not limited to communication systems of various radio access technologies (RATs), for example, a narrowband Internet of Things system (NB-IoT), a long term evolution (LTE) communication system, a 5G (or new radio, NR) communication system, or a transition system between an LTE communication system and a 5G communication system, which may also be called a 4.5G communication system. Of course, it may also be a future communication system, such as a sixth generation (6G) or even a seventh generation (7G) system. Optionally, the communication system of the present application may also be a single-hop or multi-hop relay system including a relay node. The relay may be in the form of a network device or terminal as described above. The present application can be used in high-frequency scenarios, such as millimeter wave scenarios, and can also be used in low-frequency sub-6G scenarios, such as 700 / 900 megahertz (MHz), 2.1 / 2.6 / 3.5 gigahertz (GHz) frequency bands, etc. Optionally, the service scenario of the present application may be an unlicensed transmission scenario, including but not limited to unlicensed uplink and downlink transmission between a network device and a terminal. For example, the service scenarios of the present application include the first type of configured grant (Type 1 configured grant, or configured grant Type 1, abbreviated as Type 1CG), the second type of configured grant (Type 2 configured grant, or configured grant Type 2, abbreviated as Type 2CG), semi-persistent scheduling (SPS), transmission based on preconfigured uplink resources (PUR), small data transmission (CG-small data transmission, CG-SDT) in configured authorized transmission, side link unlicensed transmission between terminals, etc.

[0074] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the evolution of communication network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0075] Among them, a terminal, also known as a terminal device (terminal), user equipment (UE), mobile station (MS), mobile terminal (MT), etc., refers to a device that provides voice and / or data connectivity to users. For example, a handheld device with wireless connection function, a vehicle-mounted device, etc. Currently, some examples of terminals include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, drones, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety (transportation safety), wireless terminals in smart cities (smart cities), wireless terminals in smart homes (smart homes), terminals in 5G networks, terminals in future evolved networks, or terminals in future communication systems. Optionally, the method provided in the present application can be applied to a terminal in an activated state, a terminal in an inactivated state or an idle state, or a terminal that is not in the above three states, such as a terminal that is not attached to the network or is not synchronized with the network in the downlink.

[0076] The network device of the present application refers to a radio access network (RAN) node (or device) that connects a terminal to a wireless network, and may also be referred to as a base station. For example, some examples of RAN nodes include: a gNB, a transmission reception point (TRP), an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., a home evolved NodeB, or a home Node B, HNB), a base band unit (BBU), or a wireless fidelity (Wifi) access point (AP), a satellite in a satellite communication system, a radio controller in a cloud radio access network (CRAN) scenario, a wearable device, a drone, or a device in an Internet of Vehicles (e.g., vehicle to everything (V2X)), or a communication device in device to device (D2D) communication.

[0077] In one possible implementation, the network device may include a centralized unit (CU) node, a distributed unit (DU) node, or a RAN device including a CU node and a DU node. The RAN device including the CU node and the DU node splits the protocol layer of the eNB in ​​the long term evolution (LTE) system, places the functions of some protocol layers in the CU for centralized control, and distributes the functions of the remaining part or all of the protocol layers in the DU, which is centrally controlled by the CU. In some deployments of network devices, the CU can also be divided into a CU-control plane (CP) and a CU-user plane (UP). In another possible implementation, the network device can also be an antenna unit (RU), etc. In another possible implementation, the network device can also be an open radio access network (ORAN) architecture, etc. This application does not limit the specific type of the network device. For example, when the network device is an ORAN architecture, the network device shown in the embodiment of the present application can be an access network device in the ORAN, or a module in the access network device, etc. In the ORAN system, CU can also be called an open centralized unit (open CU, O-CU), DU can also be called an open distributed unit (O-DU), CU-DU can also be called an open centralized unit-distributed unit (O-CU-DU), CU-UP can also be called an open centralized unit-control plane (O-CU-UP), and RU can also be called an open antenna unit (O-RU).

[0078] It should be noted that:

[0079] "Sending" and "receiving" in the embodiments of the present application indicate the direction of signal transmission. For example, "sending information to a terminal" can be understood as the destination end of the information being the terminal device, which can include direct sending through the air interface, and also includes indirect sending through the air interface by other units or modules. "Receiving information from a network device" can be understood as the source end of the information being the network device, which can include direct receiving from the network device through the air interface, and also includes indirect receiving from the network device through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface.

[0080] In other words, sending and receiving can be performed between devices, for example, between a network device and a terminal device, or can be performed within a device, for example, sending or receiving between components, modules, chips, software modules or hardware modules within the device through a bus, wiring or interface.

[0081] It is understandable that information may be processed between the source and destination of information transmission, such as coding, modulation, etc., but the destination can understand the valid information from the source. Similar expressions in this application can be understood similarly and will not be repeated.

[0082] In the embodiments of the present 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 (such as the indication information described below) is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association between the other information and the information to be indicated; it is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance, for example, the indication of specific information can be achieved with the help of the arrangement order of each information agreed in advance (such as predefined by the protocol), thereby reducing the indication overhead to a certain extent. The present application does not limit the specific method of indication. It is understandable that, for the sender of the indication information, the indication information can be used to indicate the information to be indicated, and for the receiver of the indication information, the indication information can be used to determine the information to be indicated.

[0083] 1. To facilitate understanding, the definitions of relevant terms involved in this application are introduced in detail below.

[0084] 1. Data transfer based on dynamic grant (dynamic grant, DG, or grant based, GB):

[0085] For example, Figure 2 is a schematic diagram of a data transmission process based on dynamic authorization. When a terminal has an uplink data transmission demand, the terminal can send a scheduling request (SR) to the base station through the physical uplink control channel (PUCCH), or report a non-empty buffer state (BS) to the base station through the physical uplink shared channel (PUSCH). After the base station receives the SR or non-empty buffer state report (BSR) from the terminal, it sends downlink control information (DCI) to the terminal through the physical downlink control channel (PDCCH). The DCI carries an uplink grant (UL grant). The UL grant is used to authorize the terminal to use specified parameters on specified time-frequency resources, such as using a specified modulation and coding scheme (MCS) to send uplink data. The BSR is usually sent through medium access control (MAC) layer signaling and carried in the MAC control element (MAC CE) of the data packet header. Since dynamic scheduling can efficiently utilize real-time channel information between the terminal and the base station, for example, the base station can specify the appropriate location and size of time-frequency resources, as well as appropriate transmission parameters for each transmission of the terminal, the dynamically scheduled uplink transmission usually has higher reliability.

[0086] However, during uplink data transmission based on dynamic authorization, the terminal needs to send an SR or BSR to the base station before sending data, and the base station then authorizes the data through DCI. This process introduces latency and PDCCH signaling overhead. Furthermore, since PDCCH reception typically 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 (RNTIs), this results in high terminal power consumption.

[0087] 2. Authorization-free transmission technology:

[0088] To reduce latency, signaling overhead, and terminal power consumption, NR introduces grant-free (or transmission without dynamic grant / scheduling or configured grant transmission) transmission technology. The basic principle of grant-free transmission technology is that the base station semi-statically configures the time-frequency resources and transmission parameters used for uplink data transmission for the terminal through high-layer signaling and / or physical layer signaling. When the terminal has uplink data transmission requirements, it does not need to wait for the uplink dynamic grant process, but directly uses the semi-statically configured time-frequency resources and transmission parameters to send data to the base station, thereby achieving the purpose of reducing transmission latency, signaling overhead, and terminal power consumption.

[0089] For example, NR supports two types of uplink grant-free transmission: Type 1 configured grant (also called configured grant Type 1, abbreviated as Type 1CG) and Type 2 configured grant (also called configured grant Type 2, abbreviated as Type 2CG). Figure 3 shows a schematic diagram of the first type configured grant and the second type configured grant.

[0090] For example, in the first type of configured grant, the base station sends configured grant configuration information through radio resource control (RRC) signaling. This configuration information is used to configure various transmission resources and transmission parameters, including the period of time domain resources, open-loop power control related parameters, waveform, redundancy version sequence, number of repetitions, frequency hopping mode, resource allocation type, number of hybrid automatic repeat request (HARQ) processes, demodulation reference signal (DMRS) related parameters, modulation and coding scheme table, resource block group (RBG) group size, as well as time domain resources, frequency domain resources, MCS, etc. After receiving this configuration information, the terminal can use the transmission parameters configured in this configuration information to perform CG PUSCH transmission on the configured time-frequency resources, as shown in the process on the left side of Figure 3.

[0091] For example, in the second type of configured grant, a two-step resource configuration approach is adopted, including: the base station sends the configured grant configuration information through RRC signaling. This configuration information is used to configure various transmission resources and transmission parameters, including the period of time domain resources, open-loop power control parameters, waveform, redundancy version sequence, repetition number, frequency hopping mode, resource allocation type, number of HARQ processes, demodulation reference signal parameters, MCS table, RBG group size, etc.; then, the second type of PUSCH transmission based on the configured grant is activated by DCI scrambled with the configured scheduling network temporary identifier (CS-RNTI), and various transmission resources and transmission parameters, including time domain resources, frequency domain resources, DMRS, MCS, etc., are configured at the same time. Upon receiving the RRC signaling, the terminal cannot immediately use the resources and parameters configured by the higher-layer parameters for PUSCH transmission. Instead, it must wait until it receives the corresponding DCI activation and configures other resources and parameters before it can perform CG PUSCH transmission, as shown in the process on the right side of Figure 3.

[0092] Optionally, in order to reduce DCI signaling overhead and terminal power consumption, NR downlink also supports unlicensed transmission technology, that is, based on SPS transmission. The SPS mechanism is similar to the second type of configuration authorization, using a two-step resource configuration method. First, the base station sends SPS configuration information through RRC signaling; when the terminal receives the RRC signaling, it cannot immediately use the resources and parameters configured by the signaling to receive PDSCH, but must wait until the corresponding DCI is received and other resources and parameters are configured before it can receive SPSDSCH.

[0093] In order to ensure the reliability of unlicensed transmission, when the base station fails to correctly receive PUSCH or the terminal fails to correctly receive PDSCH, the base station can increase the reception reliability of PUSCH or PDSCH by sending retransmission scheduling DCI to let the terminal retransmit PUSCH or receive PDSCH retransmission. Retransmission scheduling DCI and activation DCI are usually scrambled by a specific RNTI, such as CS-RNTI. After the terminal receives the retransmission scheduling DCI, it determines whether the DCI is used to activate / deactivate unlicensed transmission or for retransmission scheduling based on one or some specific fields. For example, when the new data indicator (NDI) field in the DCI is set to 0, it means that the DCI is used to activate / deactivate unlicensed transmission, and when the NDI is set to 1, it means that the DCI is used for retransmission scheduling.

[0094] 3. High-level parameters:

[0095] To perform dynamic grant transmission or grant-free transmission, the base station needs to configure a series of higher-layer parameters for the terminal, namely parameters configured via RRC signaling. These parameters are used by the terminal to determine the transmission resources and / or transmission parameters used for dynamic grant transmission or grant-free transmission, and also to determine the length of the field in the DCI. The base station typically configures higher-layer parameters separately for dynamic grant transmission and grant-free transmission.

[0096] For example, in 5GNR, the base station uses pusch-Config to configure one or more of the following parameters for the dynamic authorization transmission of the terminal: PUSCH scrambling code identity (dataScramblingIdentityPUSCH), uplink transmission mode configuration (txConfig), DMRS configuration (dmrs-UplinkForPUSCH-MappingTypeA / dmrs-UplinkForPUSCH-MappingTypeB), uplink power control (pusch-PowerControl), frequency hopping (frequencyHopping), frequency domain resource allocation method (resourceAllocation), resource block group size (rbg-Size), time domain resource allocation list (pusch-TimeDomainAllocationList), aggregation factor (pusch-AggregationFactor), MCS table (mcs-Table / mcs-TableTransformPrecoder), waveform (transformPrecoder), maximum rank (maxRank), priority (priorityIndicator), repeated transmission type (pusch-RepetitionIndicator), etc.

[0097] For another example, in 5G NR, the base station configures one or more of the following parameters for the terminal's unlicensed transmission through configuredGrantConfig: frequency hopping (frequencyHopping), DMRS configuration (cg-DMRS-Configuration), MCS table (mcs-Table / mcs-TableTransformPrecoder), frequency domain resource allocation method (resourceAllocation), uplink power control (powerControlLoopToUse / p0-PUSCH-Alpha), resource block group size (rbg-Size), number of repeated transmissions (repK), redundancy version (repK-RV), HARQ process configuration (nrofHARQ-Processes / harq-ProcID-offset), resource period (periodocity), priority (phy-PriorityIndex), unlicensed transmission timer (configuredGrantTimer), waveform (transformPrecoder), etc.

[0098] It should be noted that when the retransmission scheduling DCI is simultaneously used to configure, reconfigure, activate, or reactivate unlicensed transmission (collectively referred to as activating unlicensed transmission), the base station and the terminal need to be consistent in which high-level parameters are used to interpret the DCI, perform PUSCH retransmission, and perform subsequent unlicensed transmission. That is, the base station and the terminal use the same high-level parameters to interpret the DCI, perform PUSCH retransmission, and perform subsequent unlicensed transmission.

[0099] 2. Authorization-free transfer activation method provided by this application:

[0100] FIG4 is a flow chart of a method for authorization-free transmission activation provided by the present application. The authorization-free transmission activation method is applied to the communication system shown in FIG1 . For example, the authorization-free transmission activation method can be implemented by interaction between a first device and a second device. The first device can be a terminal or a device capable of implementing terminal functions, and the second device can be a network device or a device capable of implementing network device functions. The authorization-free transmission activation method includes the following steps:

[0101] S101, the second device sends retransmission scheduling downlink control information to the first device, where the retransmission scheduling downlink control information is used to activate ungranted transmission; correspondingly, the first device receives the retransmission scheduling downlink control information.

[0102] The retransmission scheduling DCI is used for both scheduling retransmissions (e.g., performing PUSCH retransmissions) and activating grant-free transmissions. The specific operations for activating grant-free transmissions may include, but are not limited to, configuring grant-free transmissions, reconfiguring grant-free transmissions, activating grant-free transmissions, and reactivating grant-free transmissions. For example, a second device sends a retransmission scheduling DCI to a first device, where the retransmission scheduling DCI is used to instruct the first device to perform PUSCH retransmissions and to instruct the first device to activate grant-free transmissions.

[0103] Optionally, the retransmission scheduling DCI is used to schedule retransmissions of an initial grant-free transmission. For example, in the authorization process for the first type of configuration shown in Figure 3, after the base station sends the configured authorization configuration via RRC signaling, the terminal will perform an initial grant-free transmission and send a PUSCH to the base station. If the base station fails to correctly receive the PUSCH, the base station may send a retransmission scheduling DCI to instruct the terminal to retransmit the PUSCH. This retransmission scheduling DCI is a DCI for retransmissions of the initial grant-free transmission.

[0104] Optionally, the authorization-free transmission may include but is not limited to the first type of configuration authorization Type1CG, the second type of configuration authorization Type2CG, semi-persistent scheduling SPS, PUR-based transmission, CG-SDT, etc.

[0105] Optionally, before the second device sends the retransmission scheduling DCI, the following steps may also be performed: the second device determines the application mode of the first parameter and determines the retransmission scheduling DCI. The retransmission scheduling DCI is used to activate the unlicensed transmission and is associated with the application mode of the first parameter. For example, the first parameter includes the configuration parameters of the unlicensed transmission and / or the configuration parameters of the dynamic granted transmission, which may be higher-level parameters configured by the base station through higher-level signaling (such as RRC signaling), such as the parameters configured by the base station for the dynamic granted transmission of the terminal through pusch-Config as described above (such as MCS table, frequency domain resource allocation mode, resource block group size, maximum rank, etc.), and / or, the parameters configured by the base station for the unlicensed transmission of the terminal through configuredGrantConfig (such as DMRS configuration, MCS table, frequency domain resource allocation mode, resource block group size, maximum rank, etc.), which will not be repeated here. Among them, the retransmission scheduling DCI is associated with the application mode of the first parameter, that is, after the base station determines the application mode of the first parameter, it can indicate the application mode of the first parameter to the terminal through the retransmission scheduling DCI, so that the base station and the terminal adopt the same application mode.

[0106] S102: The first device determines an application method of the first parameter based on the retransmission scheduling downlink control information.

[0107] Optionally, after receiving the retransmission scheduling DCI, the first device needs to first determine whether the DCI is used for retransmission scheduling and also for grant-free transmission configuration. In one possible implementation, the first device determines whether the retransmission scheduling DCI is used for grant-free transmission configuration at the same time, which may include but is not limited to the following methods:

[0108] Method 1: The first device determines, based on the RNTI of the scrambled retransmission scheduling DCI, that the retransmission scheduling DCI is also used for unauthorized transmission configuration.

[0109] For example, when the DCI is scrambled using a specific RNTI and a specific field in the DCI is set to a specific value, the first device can determine that the DCI is used for retransmission scheduling and is also used for authorization-free transmission configuration. Assume that when the DCI is scrambled using CS-RNTI and the NDI field is set to 1, the terminal determines that the DCI is used for retransmission scheduling. If the most significant bit (MSB) of the MCS field in the DCI is set to 0, the first device determines that the retransmission scheduling DCI is also used for authorization-free transmission configuration. For another example, when the RNTI is RNTI-1, the first device determines that the retransmission scheduling DCI is also used for authorization-free transmission configuration; when the RNTI is other RNTIs, the terminal determines that the retransmission scheduling DCI is not used for authorization-free transmission configuration.

[0110] Method 2: The first device determines that the retransmission scheduling DCI is also used for unauthorized transmission configuration based on the time domain and / or frequency domain resources of the retransmission scheduling DCI detected or received.

[0111] The time domain and / or frequency domain resources for the first device to detect or receive the retransmission scheduling DCI may include but are not limited to a search space (SS), a control resource set (CORESET), etc. For example, when the first device detects or receives the retransmission scheduling DCI on a first time-frequency resource, the first device determines that the retransmission scheduling DCI is also used for unlicensed transmission configuration; when the first device detects or receives the retransmission scheduling DCI on other time-frequency resources (such as a second time-frequency resource, which is different from the first time-frequency resource), the first device determines that the retransmission scheduling DCI is not used for unlicensed transmission configuration.

[0112] Method three: The first device determines, based on the value of a designated field in the retransmission scheduling DCI, that the retransmission scheduling DCI is also used for authorization-free transmission configuration.

[0113] Among them, the designated field in the retransmission scheduling DCI may include but is not limited to the modulation and coding scheme MCS field, the redundancy version RV field, the new data indication NDI field, etc. For example, when the value of some or all bits of the designated field of the retransmission scheduling DCI is a specific value, the first device determines that the retransmission scheduling DCI is also used for authorization-free transmission configuration; otherwise, the retransmission scheduling DCI is not used for authorization-free transmission configuration. Specifically, when the designated field in the retransmission scheduling DCI is the MCS field, assuming that the value of some bits (such as MSB) of the MCS field is a specific value (such as the value of MSB is 0), it indicates that the retransmission scheduling DCI is also used for authorization-free transmission configuration, otherwise it indicates that the retransmission scheduling DCI is not used for authorization-free transmission configuration. Alternatively, assuming that the value of all bits of the MCS field is a specific value (such as a value from 0 to 27), it indicates that the retransmission scheduling DCI is also used for authorization-free transmission configuration, otherwise it indicates that the retransmission scheduling DCI is not used for authorization-free transmission configuration.

[0114] Optionally, the application of the first parameter may include but is not limited to the following application methods:

[0115] Application mode 1: There is at least one first configuration parameter. When the network device configures the first configuration parameter for both dynamic authorization transmission and authorization-free transmission of the terminal, the configuration of the first configuration parameter in dynamic authorization transmission is applied;

[0116] For example, assuming that there is at least one first configuration parameter (such as an MCS table), when the network device configures the MCS table for the terminal's dynamic authorized transmission and unauthorized transmission through pusch-Config and configuredGrantConfig respectively, the terminal uses the configuration in pusch-Config.

[0117] Application mode 2: When the network device configures the second configuration parameter for both the dynamic authorized transmission and the authorization-free transmission of the terminal, the configuration of the second configuration parameter in the authorization-free transmission is applied.

[0118] For example, assuming that the network device configures the second configuration parameters (such as frequency domain resource allocation mode) for the dynamic authorized transmission and the unauthorized transmission of the terminal through pusch-Config and configuredGrantConfig respectively, the terminal uses the configuration in configuredGrantConfig.

[0119] Optionally, the first device may determine the application manner of the first parameter in the following manners, but is not limited to:

[0120] Method 1: The first device determines an application mode of the first parameter based on the resources used for receiving the retransmission scheduling DCI and a first corresponding relationship, wherein the resources used for receiving the retransmission scheduling DCI by the first device and the application mode of the first parameter have a first corresponding relationship.

[0121] The first correspondence may include, but is not limited to: a correspondence between the RNTI used to receive the retransmission scheduling DCI and the application mode of the first parameter; a correspondence between the DCI format used to receive the retransmission scheduling DCI and the application mode of the first parameter; a correspondence between the time domain resources used to receive the retransmission scheduling DCI and the application mode of the first parameter; a correspondence between the frequency domain resources used to receive the retransmission scheduling DCI and the application mode of the first parameter, etc. For example, assuming that the DCI format used to receive the retransmission scheduling DCI is DCI format 1, it corresponds to the first application mode of the first parameter; assuming that the DCI format used to receive the retransmission scheduling DCI is DCI format 0, it corresponds to the second application mode of the first parameter. For another example, assuming that the frequency domain resources used to receive the retransmission scheduling DCI are CORESET 1, it corresponds to the first application mode of the first parameter; assuming that the frequency domain resources used to receive the retransmission scheduling DCI are CORESET 2, it corresponds to the second application mode of the first parameter. For another example, assuming that the RNTI used to receive the retransmission scheduling DCI is RNTI-1, it corresponds to the first application mode of the first parameter; when the RNTI is other RNTIs, it corresponds to the second application mode of the first parameter.

[0122] Method 2: The first device determines the application method of the first parameter based on part or all of the information bits in the designated field in the retransmission scheduling DCI.

[0123] The designated fields in the retransmission scheduling DCI may include, but are not limited to, a modulation and coding scheme (MCS) field, a redundancy version (RV) field, a new data indicator (NDI) field, and the like. For example, some or all of the information bits in the MCS field in the retransmission scheduling DCI may be used to indicate the application mode of the first parameter. One implementation is shown in FIG5 . The MCS field includes five bits, and the meaning of each bit is shown in FIG5 . For example, one bit is used to indicate that the retransmission scheduling DCI is also used to activate grant-free transmission, two bits are used to indicate the MCS of the activated grant-free transmission (for example, if the higher layer configures four candidate values, the four candidate values ​​can be indicated by different values ​​of the two bits), one bit is used to indicate the application mode of the first parameter (for example, a bit value of 0 indicates application mode 1, and a bit value of 1 indicates application mode 2), and one bit is used to indicate the modulation order used for the retransmission scheduling (for example, a value of 0 indicates that the retransmission uses the same modulation order as the initial transmission, and a value of 1 indicates that the retransmission uses a modulation order one order lower than the initial transmission).

[0124] S103: The first device applies the first parameter based on the application mode.

[0125] Wherein, after the first device determines the application mode of the first parameter, the corresponding parameter configuration can be applied. Optionally, the first device applies the first parameter based on the application mode, including but not limited to the following methods:

[0126] Method 1: The first device determines the length of the field corresponding to the retransmission scheduling DCI based on the first parameter.

[0127] For example, if the length of a field in a retransmission scheduling DCI is related to a first parameter, the first device may determine the length of the specified field in the DCI based on the first parameter. For example, if the length of a frequency domain resource allocation field in a retransmission scheduling DCI is related to parameters such as the frequency domain resource configuration mode, resource block group size, and frequency hopping, the first device may determine the length of the frequency domain resource allocation field in the retransmission scheduling DCI based on the above parameters.

[0128] Method 2: The first device retransmits based on the first parameter.

[0129] For example, assuming that the first parameter includes an MCS table, the first device may determine that the MCS table is an MCS table for retransmission.

[0130] Method three: The first device performs authorization-free transmission based on the first parameter.

[0131] For example, assuming that the first parameter includes an MCS table, the first device may determine that the MCS table is an MCS table for unlicensed transmission.

[0132] In this embodiment, when the retransmission scheduling DCI is also used to activate grant-free transmission, the terminal can determine, based on the retransmission scheduling DCI, an application method for applying the first parameter, and determine that the application method is consistent with the application method of the first parameter applied by the base station. This ensures that the base station and the terminal consistently apply the first parameter, thereby avoiding physical uplink shared channel (PUSCH) retransmission failures and / or grant-free transmission failures.

[0133] In order to realize the various functions in the method provided by the present application, the device or equipment provided by the present application may include a hardware structure and / or a software module, and realize the above-mentioned various functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether a certain function among the above-mentioned functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution. The division of modules in the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, the various functional modules in the various embodiments of the present application can be integrated into a processor, or they can exist physically separately, or two or more modules can be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules.

[0134] Figure 6 is a schematic diagram of a communication device provided by the present application. The device may include a module corresponding to the method / operation / step / action described in any of the embodiments shown in Figures 4 and 5. The module may be a hardware circuit, software, or a combination of hardware circuit and software.

[0135] The apparatus 600 includes a communication unit 601 and a processing unit 602, which are used to implement the methods executed by the devices in the above embodiments. The communication unit 601 is also called a transceiver unit, which includes a sending unit and a receiving unit. The sending unit is used to send signals, and the receiving unit is used to receive signals.

[0136] In one possible implementation, the apparatus is a terminal or a terminal device. Specifically, the communication unit 601 is configured to receive retransmission scheduling downlink control information (DCI), where the retransmission scheduling DCI is used to activate ungranted transmission. The processing unit 602 is configured to determine an application mode of a first parameter based on the retransmission scheduling DCI; the first parameter includes configuration parameters for ungranted transmission and / or configuration parameters for dynamic granted transmission. The processing unit 602 is further configured to apply the first parameter based on the application mode.

[0137] The specific execution process of the communication unit 601 and the processing unit 602 in this embodiment can refer to the description of the steps performed by the first device in the method embodiment above, as well as the related description, which will not be repeated here. The authorization-free transmission activation method implemented by the device can determine the application method of the first parameter based on the retransmission scheduling DCI, and determine that the application method is consistent with the application method of the first parameter applied by the base station. Then the base station and the terminal have consistency in the application of the first parameter used, which can avoid physical uplink shared channel PUSCH retransmission failure and / or authorization-free transmission failure.

[0138] In one possible implementation, the device is a network device or a device of a network device. Specifically, the processing unit 602 is configured to determine one or more data streams, each of which corresponds to one or more identifiers. The processing unit 602 is configured to determine an application method of a first parameter, where the first parameter includes a configuration parameter for unauthorized transmission and / or a configuration parameter for dynamic authorized transmission. The processing unit 602 is further configured to determine retransmission scheduling downlink control information (DCI), which is used to activate unauthorized transmission and is associated with the application method of the first parameter. The communication unit 601 is configured to send the retransmission scheduling DCI.

[0139] The specific execution process of the communication unit 601 and the processing unit 602 in this embodiment can refer to the description of the steps performed by the second device in the method embodiment above, as well as the related description, which will not be repeated here. In the method for activating unlicensed transmission implemented by this device, when the retransmission scheduling DCI is also used to activate unlicensed transmission, the base station can also indicate to the terminal through the retransmission scheduling DCI how to apply the first parameter, so that the base station and the terminal have consistency in the application of the first parameter used, which can avoid physical uplink shared channel PUSCH retransmission failure and / or unlicensed transmission failure.

[0140] In one possible implementation, when the communication device is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit may be an input / output circuit or a communication interface; the processing unit may be a processor, microprocessor, integrated circuit, or logic circuit integrated on the chip.

[0141] The present application also provides a communication device, as shown in Figure 7, which is another structural diagram of the communication device according to an embodiment of the present application. The communication device can be used to execute the steps performed by the first device or the second device in the above method embodiment, and reference can be made to the relevant descriptions in the above method embodiment.

[0142] The communication device includes a processor 701. Optionally, the communication device further includes a memory 702 and a transceiver 703.

[0143] In a possible implementation, the processor 701 , the memory 702 , and the transceiver 703 are connected via buses, and computer instructions are stored in the memory.

[0144] Optionally, the processing unit 602 in the aforementioned embodiment may specifically be the processor 701 in this embodiment, so the specific implementation of the processor 701 is not repeated. The communication unit 601 in the aforementioned embodiment may specifically be the transceiver 703 in this embodiment, so the specific implementation of the transceiver 703 is not repeated.

[0145] In this application, a processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in this application. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in this application may be directly executed by a hardware processor, or by a combination of hardware and software modules within the processor.

[0146] In the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or a volatile memory, such as a random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the present application may also be a circuit or any other device that can implement a storage function, for storing program instructions and / or data.

[0147] The present application provides another communication device, which includes a processor and an interface. Optionally, it also includes a memory, the processor is coupled to the memory, and the processor is configured to read and execute computer instructions stored in the memory to implement the authorization-free transmission activation method in the embodiments shown in Figures 4 and 5.

[0148] The present application also provides a communication system including a first device and a second device. The first device is configured to execute all or part of the steps executed by the first device in the above embodiment. The second device is configured to execute all or part of the steps executed by the second device in the above embodiment.

[0149] The present application provides a computer-readable storage medium. The computer-readable storage medium stores a program or instruction. When the program or instruction is executed on a computer, the computer executes the authorization-free transmission activation method in the embodiments shown in Figures 4 and 5.

[0150] The present application provides a computer program product. The computer program product includes instructions. When the instructions are executed on a computer, the computer executes the authorization-free transmission activation method in the embodiments shown in Figures 4 and 5.

[0151] The present application provides a chip or chip system, which includes at least one processor and an interface, the interface and the at least one processor are interconnected by lines, and the at least one processor is used to run a computer program or instruction to execute the authorization-free transmission activation method in the embodiments shown in Figures 4 and 5.

[0152] The interface in the chip may be an input / output interface, a pin, or a circuit.

[0153] The chip system may be a system on chip (SOC) or a baseband chip, wherein the baseband chip may include a processor, a channel encoder, a digital signal processor, a modem, an interface module, and the like.

[0154] In one implementation, the chip or chip system described above in this application further includes at least one memory, in which instructions are stored. The memory may be a storage unit within the chip, such as a register, a cache, etc., or a storage unit of the chip (e.g., a read-only memory, a random access memory, etc.).

[0155] The technical solutions provided in this application can be implemented in whole or in part through software, hardware, firmware, or any combination thereof. When implemented using software, they can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in this application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a terminal, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium.

[0156] In this application, under the premise that there is no logical contradiction, the various embodiments may reference each other, for example, the methods and / or terms between method embodiments may reference each other, for example, the functions and / or terms between device embodiments may reference each other, for example, the functions and / or terms between device embodiments and method embodiments may reference each other.

[0157] Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include these modifications and variations.

Claims

1. A method for authorization-free transmission activation, characterized in that: include: receiving retransmission scheduling downlink control information DCI, where the retransmission scheduling DCI is used to activate ungranted transmission; Based on the retransmission scheduling DCI, determine an application mode of a first parameter, where the first parameter includes a configuration parameter for unauthorized transmission and / or a configuration parameter for dynamic authorized transmission; The first parameter is applied based on the application mode.

2. The method according to claim 1, characterized in that There is a first correspondence between the resource used to receive the retransmission scheduling DCI and the application method of the first parameter; The determining, based on the retransmission scheduling DCI, an application mode of the first parameter includes: Based on the resources used to receive the retransmission scheduling DCI and the first corresponding relationship, an application method of the first parameter is determined.

3. The method according to claim 2, characterized in that The first corresponding relationship includes one or more of the following: Receive a correspondence between a radio network temporary identifier RNTI used by the retransmission scheduling DCI and an application mode of the first parameter; Receive a correspondence between a DCI format used by the retransmission scheduling DCI and an application mode of the first parameter; Receive a correspondence between the time domain resources used by the retransmission scheduling DCI and the application mode of the first parameter; Receive the correspondence between the frequency domain resources used by the retransmission scheduling DCI and the application method of the first parameter.

4. The method according to claim 1, characterized in that: The determining, based on the retransmission scheduling DCI, an application mode of the first parameter includes: Based on part or all of the information bits in the designated field in the retransmission scheduling DCI, determine the application mode of the first parameter; the designated field includes one or more of the modulation and coding scheme MCS field, the redundant version RV field, and the new data indication NDI field.

5. The method according to any one of claims 1 to 4, characterized in that: The application method of the first parameter includes one or more of the following: There is at least one first configuration parameter, and when the network device configures the first configuration parameter for both dynamic authorization transmission and authorization-free transmission of the terminal, the configuration of the first configuration parameter in the dynamic authorization transmission is applied; When the network device configures the second configuration parameter for both the dynamic authorized transmission and the authorization-free transmission of the terminal, the configuration of the second configuration parameter in the authorization-free transmission is applied.

6. The method according to any one of claims 1 to 5, characterized in that: The applying the first parameter based on the application mode includes one or more of the following: Determine, based on the first parameter, a length of a field corresponding to the retransmission scheduling DCI; retransmitting based on the first parameter; Based on the first parameter, authorization-free transmission is performed.

7. The method according to any one of claims 1 to 6, characterized in that: The retransmission scheduling DCI is a DCI used to schedule retransmission for initial grant-free transmission.

8. The method according to any one of claims 1 to 6, characterized in that: The unauthorized transmission includes one or more of the following: configured authorized transmission CG, semi-static scheduling SPS, transmission based on pre-configured uplink resources PUR, and small data transmission CG-SDT in configured authorized transmission.

9. A method for authorization-free transmission activation, characterized in that: include: Determining an application mode of a first parameter, wherein the first parameter includes a configuration parameter for authorization-free transmission and / or a configuration parameter for dynamic authorization transmission; Determine retransmission scheduling downlink control information DCI, where the retransmission scheduling DCI is used to activate the ungranted transmission and is associated with the application mode of the first parameter; The retransmission scheduling DCI is sent.

10. The method according to claim 9, characterized in that Part or all of the information bits of the designated field in the retransmission scheduling DCI are used to indicate the application mode of the first parameter, and the designated field includes one or more of the modulation and coding scheme MCS field, the redundant version RV field, and the new data indication NDI field.

11. The method according to claim 9 or 10, characterized in that: The application method of the first parameter includes one or more of the following: There is at least one first configuration parameter, and when the network device configures the first configuration parameter for both dynamic authorization transmission and authorization-free transmission of the terminal, the configuration of the first configuration parameter in the dynamic authorization transmission is applied; When the network device configures the second configuration parameter for both the dynamic authorization transmission and the authorization-free transmission of the terminal, the second configuration parameter is applied Configuration in authorization-free transmission.

12. The method according to claim 9 or 10, characterized in that The retransmission scheduling DCI is a DCI used to schedule retransmission for initial grant-free transmission.

13. The method according to any one of claims 9 to 12, characterized in that: The unauthorized transmission includes one or more of the following: configured authorized transmission CG, semi-static scheduling SPS, transmission based on pre-configured uplink resources PUR, and small data transmission CG-SDT in configured authorized transmission.

14. A communication device, characterized in that: The method comprises a communication unit and a processing unit, wherein the communication unit and the processing unit are used to execute the method according to any one of claims 1 to 13.

15. A communication device, characterized in that: include: A processor and a memory, wherein the memory is used to store instructions, and when the instructions are executed by the processor, the communication device executes the method according to any one of claims 1 to 13.

16. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, and when the instructions are executed on a computer, the computer is caused to perform the method according to any one of claims 1 to 13.

17. A computer program product, characterized in that The method comprises instructions which, when executed on a computer, cause the computer to execute the method according to any one of claims 1 to 13.

18. A chip, characterized in that: The chip includes a processor, or the chip includes a processor and an interface; the processor is used to execute a computer program, so that the chip implements the method according to any one of claims 1 to 13.

19. A chip system, characterized in that: The chip system comprises a processor and an interface, wherein the processor is configured to execute a computer program so that the chip system implements the method as claimed in any one of claims 1 to 13.

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