Uplink grant-free transmission method and device, and storage medium

Abstract

The application provides an uplink scheduling-free transmission method, device and storage medium. The method comprises the following steps: after uplink scheduling-free activation, a first message sent by a network device is received; the first message is sent by the network device in the case that the network device determines that a channel state changes; the first message is an aperiodic CSI-RS reporting activation DCI message; the first message contains first precoding codebook information used by a current channel state; and uplink scheduling-free data is sent based on the first precoding codebook information. The uplink scheduling-free transmission method provided by the application can send updated precoding codebook information to a terminal through an aperiodic CSI-RS reporting activation DCI message when the terminal monitors that the channel state changes after uplink scheduling-free activation, so that the terminal can perform data transmission according to the updated precoding codebook information, and the reliability of uplink scheduling-free transmission is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, and in particular to an uplink scheduling-free transmission method and device and storage medium. BACKGROUND

[0002] The uplink scheduling-free transmission is a transmission of data by a terminal according to a statically configured period and pattern, so as to avoid a service transmission delay caused by a limited control channel resource. The uplink scheduling-free transmission supports two modes:

[0003] Type 1: transmission resources are statically configured by radio resource control (RRC) signaling, and scheduling-free activation / deactivation is triggered by RRC signaling as well;

[0004] Type 2: transmission resources are configured by RRC signaling and downlink control information (DCI) transmitted by a physical downlink control channel (PDCCH) channel, and scheduling-free activation / deactivation is triggered by DCI as well.

[0005] In the above two uplink scheduling-free transmission modes, the RRC information or the DCI activating the scheduling-free transmission is configured, and once activated, the fixed transmission parameters are used for periodic transmission on the fixed time-frequency domain resources. If the fixed parameters on the fixed resources are no longer suitable for uplink transmission due to a change in channel conditions, a change in environment and other factors.

[0006] The new radio (NR) supports uplink precoding based on a codebook and a non-codebook, wherein the uplink based on the codebook depends on a transmitted precoding matrix indicator (TPMI) value indicated in the uplink DCI. The uplink using the codebook mode can provide considerable performance improvement relative to the non-codebook. The uplink scheduling-free transmission can be improved in reliability based on the codebook.

[0007] When the channel environment changes, the uplink scheduling-free precoding codebook is no longer suitable for the current channel environment, and the original configured fixed scheduling cannot obtain the precoding codebook information under the current channel state, resulting in a performance decline and a reduced reliability because the codebook cannot match the current channel. SUMMARY

[0008] The application provides an uplink scheduling-free transmission method and device and a storage medium to solve the problem that the uplink scheduling-free transmission cannot update the precoding codebook when the channel condition changes, thereby reducing the reliability.

[0009] In a first aspect, the application provides an uplink scheduling-free transmission method, comprising:

[0010] After the uplink scheduling-free is activated, a first message sent by a network device is received; the first message is sent by the network device when the network device determines that the channel state changes; the first message is an aperiodic CSI-RS reporting activation DCI message; and the first message contains first precoding codebook information used by the current channel state.

[0011] Based on the first precoding codebook information, uplink scheduling-free data is sent.

[0012] In some embodiments, before the uplink scheduling-free is activated, the first message sent by the network device is received, further comprising:

[0013] A second message sent by the network device is received; the second message contains uplink scheduling-free configuration information, periodic SRS resource configuration information and aperiodic CSI-RS reporting configuration information.

[0014] Based on the periodic SRS resource configuration information, SRS information is sent to the network device; the SRS information is used to determine second precoding codebook information.

[0015] The network device sends an uplink scheduling-free activation message; the uplink scheduling-free activation message contains the second precoding codebook information.

[0016] Based on the second precoding codebook information, uplink scheduling-free data is sent.

[0017] In some embodiments, after the uplink scheduling-free is activated, the first message sent by the network device is received, further comprising:

[0018] The network device sends aperiodic CSI-RS reporting information.

[0019] In a second aspect, the application provides an uplink scheduling-free transmission method, comprising:

[0020] After the uplink scheduling-free is activated, the network device sends a first message to the terminal when it is determined that the channel state changes; the first message is an aperiodic CSI-RS reporting activation DCI message; the first message contains first precoding codebook information used by the current channel state; and the first precoding codebook information is used to send uplink scheduling-free data.

[0021] In some embodiments, after the uplink grant-free activation, in the case of determining that the channel state has changed, the method further comprises:

[0022] sending a second message to the terminal; the second message comprises uplink grant-free configuration information, periodic SRS resource configuration information, and aperiodic CSI-RS reporting configuration information; the periodic SRS resource configuration information is used to send SRS information;

[0023] determining second precoding codebook information based on the SRS information sent by the terminal;

[0024] sending an uplink grant-free activation message to the terminal; the uplink grant-free activation message comprises the second precoding codebook information; the second precoding codebook information is used to send uplink grant-free data.

[0025] In some embodiments, after the uplink grant-free activation, in the case of determining that the channel state has changed, the method further comprises:

[0026] receiving reporting information of the aperiodic CSI-RS sent by the terminal.

[0027] In a third aspect, the present application provides a terminal comprising a memory, a transceiver, and a processor.

[0028] The memory is configured to store a computer program; the transceiver is configured to transceive data under the control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0029] after the uplink grant-free activation, receiving a first message sent by a network device; the first message is sent by the network device in the case of determining that the channel state has changed; the first message is an aperiodic CSI-RS reporting activation DCI message; the first message comprises first precoding codebook information used in the current channel state;

[0030] sending uplink grant-free data based on the first precoding codebook information.

[0031] In a fourth aspect, the present application provides a network device comprising a memory, a transceiver, and a processor.

[0032] The memory is configured to store a computer program; the transceiver is configured to transceive data under the control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0033] After the uplink grant-free activation, a first message is sent to the terminal in a case where it is determined that the channel state has changed; the first message is an aperiodic CSI-RS reporting activation DCI message; the first message contains first precoding codebook information used by the current channel state; and the first precoding codebook information is used for sending uplink grant-free data.

[0034] In a fifth aspect, the present application provides an uplink grant-free transmission device, comprising:

[0035] A receiving module is configured to receive a first message sent by a network device after uplink grant-free activation; the first message is sent by the network device in a case where it is determined that the channel state has changed; the first message is an aperiodic CSI-RS reporting activation DCI message; and the first message contains first precoding codebook information used by the current channel state.

[0036] A transmission module is configured to send uplink grant-free data based on the first precoding codebook information.

[0037] In a sixth aspect, the present application provides an uplink grant-free transmission device, comprising:

[0038] A sending module is configured to send a first message to a terminal in a case where it is determined that the channel state has changed after uplink grant-free activation; the first message is an aperiodic CSI-RS reporting activation DCI message; and the first message contains first precoding codebook information used by the current channel state; and the first precoding codebook information is used for sending uplink grant-free data.

[0039] In a seventh aspect, the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor; when the processor executes the program, the uplink grant-free transmission method of the first aspect or the second aspect is realized.

[0040] In an eighth aspect, the present application provides a non-transitory computer readable storage medium, which stores a computer program; when the processor executes the program, the uplink grant-free transmission method of the first aspect or the second aspect is realized.

[0041] In a ninth aspect, the present application further provides a computer program product, comprising a computer program; when the processor executes the computer program, the uplink grant-free transmission method of the first aspect or the second aspect is realized.

[0042] The uplink scheduling-free transmission method, device and storage medium provided by the application, after the uplink scheduling-free is activated, when the channel state is monitored to change, the updated precoding codebook information is sent to the terminal through the non-periodic CSI-RS reporting activation DCI message, so that the terminal can perform data transmission according to the updated precoding codebook information, and the reliability of the uplink scheduling-free transmission is improved. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0044] Figure 1 is one of the flowcharts of the uplink scheduling-free transmission method provided by the embodiments of the application;

[0045] Figure 2 is the second flowchart of the uplink scheduling-free transmission method provided by the embodiments of the application;

[0046] Figure 3 is the third flowchart of the uplink scheduling-free transmission method provided by the embodiments of the application;

[0047] Figure 4 is the fourth flowchart of the uplink scheduling-free transmission method provided by the embodiments of the application;

[0048] Figure 5 is the fifth flowchart of the uplink scheduling-free transmission method provided by the embodiments of the application;

[0049] Figure 6 is the structural schematic diagram of the terminal provided by the embodiments of the application;

[0050] Figure 7 is the structural schematic diagram of the network device provided by the embodiments of the application;

[0051] Figure 8 is the first structural schematic diagram of the uplink scheduling-free transmission device provided by the embodiments of the application;

[0052] Figure 9 is the second structural schematic diagram of the uplink scheduling-free transmission device provided by the embodiments of the application. DETAILED DESCRIPTION

[0053] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0054] In the 5G NR system, after uplink unscheduled activation, the terminal obtains fixed uplink grant information, such as fixed time-frequency resources, modulation and coding scheme (MCS), precoding codebook and other information, and transmits data at the uplink unscheduled transmission time through the grant information.

[0055] When the channel condition changes, the fixed precoding codebook cannot match the current channel state, thereby reducing the reliability of data transmission.

[0056] Therefore, in order to improve the reliability of uplink unscheduled transmission, it is necessary to modify the scheduling information according to the state of the channel. If it is Type 1, it is necessary to update the configuration information by reconfiguring the information through RRC signaling, and if it is Type 2, it is necessary to issue an activation DCI.

[0057] If the two methods are used in a high-speed scenario or a scenario with frequent environmental changes, Type 1 needs to frequently issue RRC reconfiguration messages, and the terminal needs to reply to the confirmation. For Type 2, an activation DCI is frequently issued to update the configuration information, and the terminal needs to reply to the confirmation on the configured grant resource. However, these confirmation information is not needed. Too frequent will cause the resource to be occupied by signaling, resulting in resource waste.

[0058] Figure 1 is one of the flowcharts of the uplink unscheduled transmission method provided by the embodiments of the present application, with reference to Figure 1 The embodiments of the present application provide an uplink unscheduled transmission method, and the execution subject of the method can be a terminal, such as a mobile phone and the like. The method can include the following steps.

[0059] Step 110, after uplink unscheduled activation, receiving a first message sent by a network device; the first message is sent by the network device when it is determined that the channel state has changed; the first message is an aperiodic CSI-RS reporting activation DCI message; the first message contains first precoding codebook information used by the current channel state;

[0060] Step 120, based on the first precoding codebook information, transmitting uplink unscheduled data.

[0061] In step 110, after the uplink grant-free activation, a first message sent by the network device is received.

[0062] In the 5G NR system, after the uplink grant-free activation, the terminal obtains fixed uplink grant information, such as fixed time-frequency resources, MCS, and precoding codebook information, and transmits data at the uplink grant-free transmission time through the grant information.

[0063] Optionally, before the uplink grant-free activation, the network device can send a second message to the terminal, and the second message can be an RRC message.

[0064] The second message contains uplink grant-free configuration information, periodic SRS resource configuration information, and aperiodic CSI-RS reporting configuration information.

[0065] After receiving the second message sent by the network device, the terminal performs uplink grant-free configuration, periodic SRS resource configuration, and aperiodic CSI-RS reporting configuration.

[0066] Optionally, after the terminal performs the uplink grant-free configuration and the aperiodic CSI-RS reporting configuration, the network device needs to send a DCI activation message to activate the uplink grant-free service and the aperiodic CSI-RS reporting service.

[0067] After the terminal performs the periodic SRS resource configuration, the terminal can periodically send SRS information to the network device, and the network device can calculate the uplink precoding codebook value, i.e., the precoding codebook information, according to the received SRS information. The precoding codebook information can be a TPMI value.

[0068] When the uplink grant-free service is started, the network device sends an uplink grant-free activation DCI to the terminal to activate the uplink grant-free service of the terminal. The uplink grant-free activation DCI contains the second precoding codebook information of the terminal uplink transmission data detected by the network device through the SRS, for example, the second precoding codebook information can be TPMI=n.

[0069] After receiving the uplink grant-free activation DCI sent by the network device, the terminal sends an activation confirmation information to the network device according to the grant information of the uplink grant-free activation DCI. The terminal uses the second precoding codebook information TPMI=n to transmit data after the uplink grant-free activation.

[0070] The network device receives the activation confirmation information, confirms the uplink scheduling-free activation, and calculates the precoding codebook information by receiving the SRS sent by the terminal, and detects whether the channel state has changed.

[0071] The network device detects that the precoding codebook has changed, and can send the updated precoding codebook indication to the terminal through the dynamic authorization DCI of other service transmission of the terminal, for example:

[0072] The network device detects the SRS data sent by the terminal, and the calculated first precoding codebook information is TPMI=m, which is different from the second precoding codebook information TPMI=n in the uplink scheduling-free configuration. If the terminal still uses the second precoding codebook information, it cannot match the current channel state, thereby reducing the reliability of data transmission.

[0073] The network device can select a nearest downlink occasion to send a first message to the terminal. The first message is the DCI for activating the aperiodic CSI-RS reporting. The DCI for activating the aperiodic CSI-RS reporting carries the precoding indication value of the calculated TPMI=m.

[0074] After the terminal receives the first message, the terminal activates the aperiodic CSI-RS reporting service and obtains the precoding codebook indication value TPMI=m carried in the DCI, updates the precoding codebook indication value m of the uplink scheduling-free service, and sends the aperiodic CSI-RS reporting information through the physical uplink shared channel (PUSCH) in the uplink slot occasion corresponding to the uplink DCI.

[0075] The network device receives the aperiodic CSI-RS reporting information sent by the terminal, and confirms that the precoding codebook information of the uplink scheduling-free service has been updated.

[0076] In step 120, based on the first precoding codebook information, uplink scheduling-free data is sent.

[0077] After the terminal obtains the first precoding codebook information, the terminal uses the first precoding codebook information in the uplink scheduling-free occasion to transmit the uplink scheduling-free data. That is, before the terminal receives the updated precoding codebook indication value, the terminal uses the current updated precoding codebook information TPMI=m to transmit the uplink scheduling-free service data.

[0078] The network device and the terminal can repeat the above steps until the uplink scheduling-free service of the terminal is deactivated.

[0079] The uplink scheduling-free transmission method provided by the embodiment of the application, after the uplink scheduling-free is activated, when the channel state is monitored to change, the updated precoding codebook information is sent to the terminal through the non-periodic CSI-RS reporting activation DCI message, so that the terminal can perform data transmission according to the updated precoding codebook information, and the reliability of the uplink scheduling-free transmission is improved.

[0080] In some embodiments, before the first message sent by the network device is received after the uplink scheduling-free is activated, the method further comprises:

[0081] receiving a second message sent by the network device; the second message comprises uplink scheduling-free configuration information, periodic SRS resource configuration information and non-periodic CSI-RS reporting configuration information;

[0082] sending SRS information to the network device based on the periodic SRS resource configuration information; the SRS information is used to determine second precoding codebook information;

[0083] receiving an uplink scheduling-free activation message sent by the network device; the uplink scheduling-free activation message comprises the second precoding codebook information;

[0084] sending uplink scheduling-free data based on the second precoding codebook information.

[0085] Optionally, before the uplink scheduling-free is activated, the network device can send a second message to the terminal, and the second message can be an RRC message.

[0086] The second message comprises uplink scheduling-free configuration information, periodic SRS resource configuration information and non-periodic CSI-RS reporting configuration information.

[0087] After the terminal receives the second message sent by the network device, uplink scheduling-free configuration, periodic SRS resource configuration and non-periodic CSI-RS reporting configuration are performed.

[0088] Optionally, after the terminal performs uplink scheduling-free configuration and non-periodic CSI-RS reporting configuration, the network device needs to send a DCI activation message to activate the uplink scheduling-free service and the non-periodic CSI-RS reporting service.

[0089] After the terminal performs periodic SRS resource configuration, SRS information can be periodically sent to the network device, and the network device can calculate the uplink precoding codebook value, i.e., the precoding codebook information, according to the received SRS information; the precoding codebook information can be a TPMI value.

[0090] When the uplink scheduling-free service is started, the network device sends an uplink scheduling-free activation DCI to the terminal to activate the uplink scheduling-free service of the terminal, and the second precoding codebook information of the terminal uplink transmission data detected by the network device is contained in the uplink scheduling-free activation DCI, for example, the second precoding codebook information can be: TPMI = n.

[0091] After the terminal receives the uplink scheduling-free activation DCI sent by the network device, the terminal sends activation confirmation information to the network device according to the grant information of the uplink scheduling-free activation DCI. The terminal uses the second precoding codebook information: TPMI = n to send data after the uplink scheduling-free activation.

[0092] After the network device receives the activation confirmation information, the network device can confirm the uplink scheduling-free activation, and calculate the precoding codebook information by receiving the SRS sent by the terminal to detect whether the channel state has changed.

[0093] The uplink scheduling-free transmission method provided by the embodiment of the application can receive the periodic SRS resource configuration information sent by the network device before the uplink scheduling-free activation, so that the terminal can send SRS information to the network device according to the periodic SRS resource configuration information, and the network device can determine the precoding codebook information used by the current channel according to the SRS information.

[0094] In some embodiments, after the uplink scheduling-free activation, the receiving of the first message sent by the network device further comprises:

[0095] Sends the reporting information of the aperiodic CSI-RS to the network device.

[0096] Optionally, the first message is an activation DCI of the aperiodic CSI-RS reporting, and the activation DCI of the aperiodic CSI-RS reporting carries the calculated precoding indication value of TPMI = m.

[0097] After the terminal receives the first message, the terminal activates the aperiodic CSI-RS reporting service and sends the reporting information of the aperiodic CSI-RS to the network device, and the network device receives the reporting information of the aperiodic CSI-RS sent by the terminal, so that the precoding codebook information of the uplink scheduling-free service is updated.

[0098] The uplink scheduling-free transmission method provided by the embodiment of the present application can receive the reporting information of the aperiodic CSI-RS sent by the terminal when the updated precoding codebook information is sent to the terminal through the aperiodic CSI-RS reporting activation DCI message, and the network device can consider that the confirmation of the uplink scheduling-free precoding codebook indication update has been received after receiving the reporting information of the aperiodic CSI-RS, so that the problem of resource waste caused by the fact that the terminal needs to frequently reply to the confirmation information at the uplink scheduling-free data transmission opportunity when the network device activates the DCI message to send the updated precoding codebook information in the case of frequent channel state changes can be avoided.

[0099] Figure 2 FIG. 2 is a flowchart of the uplink scheduling-free transmission method provided by the embodiment of the present application, which is a second flowchart of the uplink scheduling-free transmission method provided by the embodiment of the present application, and Figure 2 The embodiment of the present application provides an uplink scheduling-free transmission method, and the execution subject of the method can be a network device, for example, a base station or the like. The method can include the following steps.

[0100] In the step 210, a first message is sent to the terminal in the case where it is determined that the channel state has changed after the uplink scheduling-free activation; the first message is an aperiodic CSI-RS reporting activation DCI message; the first message contains first precoding codebook information used by the current channel state; and the first precoding codebook information is used for sending uplink scheduling-free data.

[0101] In some embodiments, before the step of sending the first message to the terminal in the case where it is determined that the channel state has changed after the uplink scheduling-free activation, the method further includes the following steps.

[0102] A second message is sent to the terminal; the second message contains uplink scheduling-free configuration information, periodic SRS resource configuration information, and aperiodic CSI-RS reporting configuration information; and the periodic SRS resource configuration information is used for sending SRS information.

[0103] Second precoding codebook information is determined based on the SRS information sent by the terminal.

[0104] An uplink scheduling-free activation message is sent to the terminal; the uplink scheduling-free activation message contains the second precoding codebook information; and the second precoding codebook information is used for sending uplink scheduling-free data.

[0105] In some embodiments, after the step of sending the first message to the terminal in the case where it is determined that the channel state has changed after the uplink scheduling-free activation, the method further includes the following steps.

[0106] The reporting information of the aperiodic CSI-RS sent by the terminal is received.

[0107] Specifically, the uplink scheduling-free transmission method provided by the embodiment of the present application can refer to the uplink scheduling-free transmission method embodiment of the above-mentioned execution subject being a terminal, and can achieve the same technical effects. Here, the same parts and beneficial effects in the above-mentioned corresponding method embodiments will not be described in detail.

[0108] Figure 3 Fig. 3 is a flowchart of the uplink scheduling-free transmission method provided by the embodiment of the present application, Figure 4 Fig. 4 is a flowchart of the uplink scheduling-free transmission method provided by the embodiment of the present application, Figure 5 Fig. 5 is a flowchart of the uplink scheduling-free transmission method provided by the embodiment of the present application, and Figures 3 to 5 The uplink scheduling-free transmission method provided by the embodiment of the present application will be described in detail with reference to the specific embodiments and

[0109] S1, the network side sends the Type 2 uplink scheduling-free configuration information to the terminal through the configuration or reconfiguration message, and configures the periodic SRS resource for codebook transmission and the non-periodic CSI-RS reporting configuration. The SRS configuration based on the codebook is used for the network side to measure and calculate the uplink precoding codebook value, and the non-periodic CSI-RS reporting is used for the terminal to transmit the dynamic scheduling transmission service.

[0110] S2, when the uplink scheduling-free service is started, the network side sends the activation DCI to the terminal to activate the uplink scheduling-free service of the terminal. The activation DCI contains the precoding codebook indication TPMI = n of the terminal uplink transmission data detected by the network side.

[0111] After receiving the activation DCI, the terminal sends the activation confirmation information to the network side according to the authorization information of the activation DCI, that is, the configured Grant Confirmation MAC CE.

[0112] After receiving the activation confirmation information, the network side starts to detect the precoding codebook information calculated by the SRS.

[0113] The terminal side uses the precoding codebook TPMI = n to send data at the uplink scheduling-free occasion.

[0114] S3, when the network side detects that the precoding codebook changes, the network side can send the updated precoding codebook indication to the terminal through the dynamic authorization DCI of other service transmission of the terminal, and the specific process is as follows:

[0115] S3.1, the network side detects the SRS data sent by the terminal, and when the calculated TMPI value is m and different from the TPMI value n carried in the uplink scheduling-free configuration DCI, the uplink scheduling-free precoding codebook updating process is started.

[0116] S3.2 The network side selects a nearest downlink occasion, and issues a DCI for activating the aperiodic CSI-RS reporting, wherein the DCI carries a calculated precoding indication value of TPMI=m, and the DCI is issued to the terminal.

[0117] S4. The terminal receives the DCI for activating the aperiodic CSI-RS reporting, and acquires the precoding codebook indication value of TPMI=m carried in the DCI, and updates the precoding codebook indication value of the uplink grant-free service to m.

[0118] Meanwhile, the terminal sends the aperiodic CSI-RS reporting information through the PUSCH channel at the uplink slot occasion corresponding to the uplink DCI.

[0119] S5. The network side receives the aperiodic CSI-RS reporting information sent by the terminal, and confirms that the precoding codebook information of the uplink grant-free service is updated.

[0120] S6. Before receiving the updated precoding codebook indication value, the terminal uses the updated precoding codebook information of TPMI=m to perform data transmission of the uplink grant-free service.

[0121] S7. The network side and the terminal side repeat the above steps S4, S5, S6 and S7 until the uplink grant-free service of the terminal is deactivated.

[0122] The uplink grant-free transmission method provided by the embodiment of the application uses other dynamic scheduling services of the terminal based on the uplink grant-free type2 transmission mechanism, and issues the updated precoding codebook indication information to the terminal through the uplink DCI message. After receiving the dynamic scheduling DCI, the terminal updates the precoding codebook of the uplink grant-free service, and sends the scheduled PUSCH data to the network device. The network device receives the data and considers that the confirmation of the uplink grant-free precoding codebook indication update is received. Then, the updated precoding codebook indication is used for data transmission at the uplink grant-free transmission occasion.

[0123] The uplink grant-free transmission method provided by the embodiment of the application is easy to implement, and can well solve the problem that the uplink grant-free service cannot update the precoding codebook in real time when the channel condition changes, thereby reducing the reliability. Meanwhile, the method also solves the problem of resource waste caused by the frequent reply of the UE at the uplink grant-free data transmission occasion when the channel state changes frequently.

[0124] Figure 6 is a structural schematic diagram of the terminal provided by the embodiment of the application, which is described with reference to Figure 6The embodiment of the present application also provides a terminal, which can comprise a memory 610, a transceiver 620 and a processor 630;

[0125] The memory 610 is used for storing a computer program; the transceiver 620 is used for transceiving data under the control of the processor 630; and the processor 630 is used for reading the computer program in the memory 610 and performing the following operations:

[0126] After the uplink grant-free activation, a first message sent by a network device is received; the first message is sent by the network device in a case that the network device determines that a channel state changes; the first message is an aperiodic CSI-RS reporting activation DCI message; and the first message comprises first precoding codebook information used by a current channel state;

[0127] Based on the first precoding codebook information, uplink grant-free data is sent.

[0128] In the above embodiment, the uplink grant-free data is sent based on the first precoding codebook information. Figure 6 In the above embodiment, the bus architecture can comprise any number of interconnected buses and bridges, and various circuits of the processor 630 represented by one or more processors and the memory 610 represented by the memory are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage stabilizers and power management circuits, which are well known in the art, and thus, further description is not given herein. The bus interface provides an interface. The transceiver 620 can be a plurality of elements, i.e., comprising a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium. The user interface 640 can also be an interface capable of connecting the required devices externally and internally for different user devices.

[0129] The processor 630 is responsible for managing the bus architecture and general processing, and the memory 610 can store data used by the processor 630 when performing operations.

[0130] The processor 630, by invoking the computer program stored in the memory 610, is used for executing any method provided by the embodiment of the present application according to the obtained executable instructions. The processor and the memory can also be physically arranged separately.

[0131] Optionally, the processor 630 is further used for performing the following operations:

[0132] A second message sent by a network device is received; the second message comprises uplink grant-free configuration information, periodic SRS resource configuration information and aperiodic CSI-RS reporting configuration information;

[0133] Based on the periodic SRS resource configuration information, SRS information is sent to the network device; and the SRS information is used for determining second precoding codebook information;

[0134] receiving an uplink grant-free activation message sent by the network device; the uplink grant-free activation message contains the second precoding codebook information;

[0135] sending uplink grant-free data based on the second precoding codebook information.

[0136] Optionally, the processor 630 is further configured to perform the following operations:

[0137] sending reporting information of the aperiodic CSI-RS to the network device.

[0138] Figure 7 is a structural schematic diagram of a network device provided by an embodiment of the present application, with reference to Figure 7 The present application also provides a network device, which can include a memory 710, a transceiver 720 and a processor 730.

[0139] The memory 710 is configured to store a computer program; the transceiver 720 is configured to transceive data under the control of the processor 730; and the processor 730 is configured to read the computer program in the memory 710 and perform the following operations:

[0140] after the uplink grant-free activation, sending a first message to the terminal in the case where it is determined that the channel state has changed; the first message is an aperiodic CSI-RS reporting activation DCI message; the first message contains first precoding codebook information used by the current channel state; and the first precoding codebook information is used for sending uplink grant-free data.

[0141] In the above Figure 7 The bus architecture can include any number of interconnecting buses and bridges, and the various circuitry representative of the processor(s) 730 and the memory 710 that are linked together by the bus architecture, are merely exemplary. The bus architecture can also link together various other circuitry, which is well known, such as, for example, peripheral devices, voltage stabilizers, and power management circuitry, under the control of the processor 730 by means that are also well known. The bus interface provides an interface to the transceiver 720. The transceiver 720 can be a number of elements, including a transmitter and a receiver, which are coupled to the bus interface and provide means for communicating with various other apparatus over a transmission medium.

[0142] The processor 730 is responsible for managing the bus architecture and general processing, and the memory 710 can store data used by the processor 730 in performing operations.

[0143] Optionally, the processor 730 is further configured to perform the following operations:

[0144] sending a second message to the terminal; the second message comprises uplink scheduling-free configuration information, periodic SRS resource configuration information and aperiodic CSI-RS reporting configuration information; the periodic SRS resource configuration information is used for sending SRS information;

[0145] determining second precoding codebook information based on the SRS information sent by the terminal;

[0146] sending an uplink scheduling-free activation message to the terminal; the uplink scheduling-free activation message comprises the second precoding codebook information; the second precoding codebook information is used for sending uplink scheduling-free data.

[0147] Optionally, the processor 730 is further configured to perform the following operations:

[0148] receiving reporting information of the aperiodic CSI-RS sent by the terminal.

[0149] It should be noted that the terminal and the network device provided by the embodiments of the present application can realize all the method steps achieved by the above-mentioned method embodiments, and can achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments in the embodiments will not be described in detail.

[0150] The uplink scheduling-free transmission device provided by the present application will be described below. The uplink scheduling-free transmission device described below can be referred to the uplink scheduling-free transmission method described above.

[0151] Figure 8 is one of the structural diagrams of the uplink scheduling-free transmission device provided by the embodiments of the present application, and the uplink scheduling-free transmission device provided by the embodiments of the present application can comprise: Figure 8 The present application provides an uplink scheduling-free transmission device, which can comprise:

[0152] The receiving module 810 is configured to receive a first message sent by a network device after uplink scheduling-free activation; the first message is sent by the network device in a case where the network device determines that the channel state changes; the first message is an aperiodic CSI-RS reporting activation DCI message; and the first message comprises first precoding codebook information used for a current channel state.

[0153] The transmission module 820 is configured to send uplink scheduling-free data based on the first precoding codebook information.

[0154] Optionally, the uplink scheduling-free transmission device further comprises:

[0155] The second receiving module is configured to receive a second message sent by a network device; the second message comprises uplink scheduling-free configuration information, periodic SRS resource configuration information and aperiodic CSI-RS reporting configuration information.

[0156] A second sending module is configured to send SRS information to a network device based on the periodic SRS resource configuration information; the SRS information is used to determine second precoding codebook information;

[0157] A third receiving module is configured to receive an uplink scheduling-free activation message sent by the network device; the uplink scheduling-free activation message includes the second precoding codebook information;

[0158] The third sending module is configured to send uplink scheduling-free data based on the second precoding codebook information.

[0159] Optionally, the uplink scheduling-free transmission device further includes:

[0160] The fourth sending module is configured to send reporting information of the aperiodic CSI-RS to the network device.

[0161] Figure 9 This is a second structural diagram of the uplink scheduling-free transmission device provided by an embodiment of the present invention, referring to Figure 9 The present invention provides an uplink scheduling-free transmission device that may include:

[0162] The sending module 910 is used to send a first message to the terminal after uplink scheduling-free activation and when it is determined that the channel state has changed; the first message is a non-periodic CSI-RS reporting activation DCI message; the first message includes the first precoding codebook information used by the current channel state; the first precoding codebook information is used to send uplink scheduling-free data.

[0163] Optionally, the uplink scheduling-free transmission device further includes:

[0164] A fifth sending module is configured to send a second message to the terminal; the second message includes: uplink scheduling-free configuration information, periodic SRS resource configuration information, and aperiodic CSI-RS reporting configuration information; the periodic SRS resource configuration information is used to send SRS information;

[0165] A determination module, configured to determine second precoding codebook information based on the SRS information sent by the terminal;

[0166] A sixth sending module is configured to send an uplink scheduling-free activation message to the terminal; the uplink scheduling-free activation message includes the second precoding codebook information; and the second precoding codebook information is used to send uplink scheduling-free data.

[0167] Optionally, the uplink scheduling-free transmission device further includes:

[0168] The fourth receiving module is configured to receive reporting information of the aperiodic CSI-RS sent by the terminal.

[0169] It should be noted that the uplink scheduling-free transmission device provided by the embodiment of the present application can realize all the method steps realized by the method embodiment and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiment will not be described in detail.

[0170] In another aspect, the present application also provides a computer program product, which comprises a computer program, the computer program can be stored on a non-transitory computer readable storage medium, and the computer program can be executed by a processor to enable a computer to perform the uplink scheduling-free transmission method provided by the above-mentioned methods. The method comprises: receiving a first message sent by a network device after uplink scheduling-free activation; the first message is sent by the network device in a case where the network device determines that the channel state has changed; the first message is an aperiodic CSI-RS reporting activation DCI message; the first message contains first precoding codebook information used by the current channel state; and uplink scheduling-free data is sent based on the first precoding codebook information.

[0171] In another aspect, the present application also provides a computer program product, which comprises a computer program, the computer program can be stored on a non-transitory computer readable storage medium, and the computer program can be executed by a processor to enable a computer to perform the uplink scheduling-free transmission method provided by the above-mentioned methods. The method comprises: receiving a first message sent by a network device after uplink scheduling-free activation; the first message is sent by the network device in a case where the network device determines that the channel state has changed; the first message is an aperiodic CSI-RS reporting activation DCI message; the first message contains first precoding codebook information used by the current channel state; and uplink scheduling-free data is sent based on the first precoding codebook information.

[0172] The device embodiments described above are only schematic, wherein the units shown as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., they can be located in one place or distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment. Those skilled in the art can understand and implement it without creative labor.

[0173] Those skilled in the art can clearly understand the technical solutions of the various embodiments from the above description of the embodiments, and the various embodiments can be implemented by means of software with the necessary general hardware platforms, and of course, can also be implemented by hardware. Based on such understanding, the above technical solutions, essentially or in other words, the part of the prior art that makes a contribution, can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, and the like, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0174] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for uplink scheduling-free transmission, characterized in that: Applied to terminals, including: After uplink scheduling-free activation, receiving a first message sent by a network device; the first message is sent by the network device when it determines that a channel state has changed; the first message is an aperiodic CSI-RS reporting activation DCI message; the first message includes first precoding codebook information used by the current channel state; Uplink scheduling-free data is sent based on the first precoding codebook information.

2. The uplink scheduling-free transmission method according to claim 1, wherein: After uplink scheduling-free activation, before receiving a first message sent by the network device, the method further includes: Receive a second message sent by the network device; the second message includes: uplink scheduling-free configuration information, periodic SRS resource configuration information and aperiodic CSI-RS reporting configuration information; Sending SRS information to a network device based on the periodic SRS resource configuration information; wherein the SRS information is used to determine second precoding codebook information; receiving an uplink scheduling-free activation message sent by the network device; the uplink scheduling-free activation message includes the second precoding codebook information; Uplink scheduling-free data is sent based on the second precoding codebook information.

3. The uplink scheduling-free transmission method according to claim 1, wherein: After the uplink scheduling-free activation, after receiving the first message sent by the network device, the method further includes: Sending reporting information of the aperiodic CSI-RS to the network device.

4. A method for uplink scheduling-free transmission, characterized in that: Applicable to network equipment, including: After uplink scheduling-free activation, when it is determined that the channel state has changed, a first message is sent to the terminal; the first message is a non-periodic CSI-RS reporting activation DCI message; the first message includes the first precoding codebook information used by the current channel state; the first precoding codebook information is used to send uplink scheduling-free data.

5. The uplink scheduling-free transmission method according to claim 4, characterized in that: After uplink scheduling-free activation, when it is determined that the channel state has changed, before sending the first message to the terminal, the method further includes: Sending a second message to the terminal; the second message includes: uplink scheduling-free configuration information, periodic SRS resource configuration information and aperiodic CSI-RS reporting configuration information; the periodic SRS resource configuration information is used to send SRS information; Determining second precoding codebook information based on the SRS information sent by the terminal; An uplink scheduling-free activation message is sent to the terminal; the uplink scheduling-free activation message includes the second precoding codebook information; and the second precoding codebook information is used to send uplink scheduling-free data.

6. The uplink scheduling-free transmission method according to claim 4, wherein: After uplink scheduling-free activation, in the case of determining that the channel state has changed, after sending the first message to the terminal, the method further includes: Receive reporting information of the aperiodic CSI-RS sent by the terminal.

7. A terminal, characterized in that: Including memory, transceiver, processor; A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: After uplink scheduling-free activation, receiving a first message sent by a network device; the first message is sent by the network device when it determines that a channel state has changed; the first message is an aperiodic CSI-RS reporting activation DCI message; the first message includes first precoding codebook information used by the current channel state; Uplink scheduling-free data is sent based on the first precoding codebook information.

8. A network device, characterized in that: Including memory, transceiver, processor; A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: After uplink scheduling-free activation, when it is determined that the channel state has changed, a first message is sent to the terminal; the first message is a non-periodic CSI-RS reporting activation DCI message; the first message includes the first precoding codebook information used by the current channel state; the first precoding codebook information is used to send uplink scheduling-free data.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the uplink scheduling-free transmission method according to any one of claims 1 to 6 is implemented.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the uplink scheduling-free transmission method according to any one of claims 1 to 6 is implemented.

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