Uplink data transmission method, apparatus, and system

Abstract

An embodiment of the present invention provides a method, an apparatus and a system for transmitting uplink data, the method including: a terminal device receiving a PDCCH transmitted by a network device, the PDCCH instructing the terminal device to transmit a PUSCH retransmission, a CRC corresponding to the PDCCH being scrambled by a CS-RNTI, and an NDI field of the PDCCH being 1; and the terminal device transmitting the PUSCH retransmission based on a first power control parameter of a configuration grant configuration corresponding to the PUSCH retransmission, the first power control parameter including at least one of P0, Alpha, a Pathloss Reference Signal (PL-RS), and a Close Loop Index, the first power control parameter being correlated to at least one element of a power control indication corresponding to the PDCCH, an SRS resource indication corresponding to the PDCCH, and an SRS resource set for PUSCH transmission configured for the terminal device.

Description

Technical Field

[0001] The present invention relates to the field of communications.

Background Art

[0002] To meet the needs of high reliability and low latency of URLLC (Ultra-Relaible and Low Latency Communication) services, NR Rel-16 (New Radio Release 16) has introduced a corresponding uplink data transmission mechanism. This mechanism supports more flexible uplink data transmission and reduces the latency of uplink data transmission.

[0003] Note that the above description of the background art is merely for more clearly and completely explaining the configuration of the present invention, and is for the purpose of making those skilled in the art understand. These configurations should not be interpreted as well-known technologies to those skilled in the art just because they are described in the background art part of the present invention.

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to the discovery of the inventor of the present invention, NR (New Radio) supports a high center transmission frequency up to 52.6 GHz. Therefore, in a high-frequency scenario, due to the low diffraction ability of high-frequency radio signals, they are easily blocked. Such a decrease in channel quality due to blockage is very disadvantageous for uplink transmission. This is because according to the existing beam obstacle recovery mechanism, it takes at least dozens of milliseconds to recover the communication link, but the communication latency requirement of URLLC is generally much smaller than dozens of milliseconds.

[0005] Therefore, high-frequency uplinks are susceptible to shielding, potentially causing instantaneous channel degradation. Existing recovery mechanisms are too time-consuming to meet the latency requirements of URLLC services. One possible solution to mitigate the impact of shielding on uplink data transmission is to transmit uplink data using a spatial diversity method. In other words, at the terminal equipment level, the same data can reach the network device at different times via different spatial domain paths or different TRPs (transmission and reception points). Thus, even if shielding occurs in one path, other paths can continue to operate, ensuring low latency and high reliability of uplink data.

[0006] However, the NR system does not support the above method for initial transmission and retransmission of uplink transmissions with configuration grants. This leads to a lack of reliability in the NR system, and in particular, when the NR system transmits URLLC services using uplink transmissions with configuration grants, it cannot transmit using the spatial diversity method, resulting in insufficient reliability of uplink transmissions and an inability to meet the needs of URLLC services.

[0007] To solve the problems described above or other similar problems, embodiments of the present invention provide a method, apparatus, and system for transmitting uplink data that solves the transmission problem of retransmission of uplink transmissions with configuration grants. [Means for solving the problem]

[0008] In one embodiment of the present invention, an uplink data transmitting device is provided, comprising: a receiving unit that receives a PDCCH transmitted by a network device, wherein the PDCCH instructs the terminal device to transmit a PUSCH retransmission, the CRC corresponding to the PDCCH is scrambled by CS-RNTI, and the NDI field of the PDCCH is 1; and a transmitting unit that transmits the PUSCH retransmission based on a first power control parameter of a CG configuration corresponding to the PUSCH retransmission, wherein the first power control parameter includes at least one of P0, Alpha, Pathloss Reference Signal (PL-RS), and Close loop index, and the first power control parameter correlates with at least one of a power control instruction corresponding to the PDCCH, an SRS resource instruction corresponding to the PDCCH, and an SRS resource set configured for PUSCH transmission for the terminal device.

[0009] In another embodiment of the present invention, an uplink data transmitting device is provided, comprising: a receiving unit that receives a PDCCH transmitted by a network device, wherein the PDCCH instructs the terminal device to transmit a PUSCH retransmission, the CRC corresponding to the PDCCH is scrambled by CS-RNTI, and the NDI field of the PDCCH is 1; and a transmitting unit that transmits the PUSCH retransmission based on a third power control parameter, wherein the third power control parameter means a parameter in UE-specific PUSCH configuration information, and the third power control parameter includes at least one of P0, Alpha, Pathloss Reference Signal (PL-RS), and Close loop index, and the third power control parameter correlates to at least one element of a power control instruction corresponding to the PDCCH, an SRS resource instruction corresponding to the PDCCH, and an SRS resource set configured for PUSCH transmission for the terminal device.

[0010] The advantageous effects of the embodiments of the present invention are as follows: According to the embodiments of the present invention, the transmission problem of retransmission of uplink transmissions with configuration grants is solved, and robustness can be improved by instructing the terminal device to retransmit the uplink transmission with configuration grants using a more reliable uplink transmission method (or more reliable uplink power control parameters) if an uplink transmission with configuration grants fails once.

[0011] As shown in the following description and drawings, specific embodiments of the present invention are disclosed in detail, illustrating methods in which the principles of the present invention can be employed. However, the scope of embodiments of the present invention is not limited to these. Embodiments of the present invention include modified, altered, and equivalent forms within the scope of the gist and items of the appended claims.

[0012] Features described and / or shown in one embodiment may be used in the same or similar manner in one or more other embodiments, may be combined with features in other embodiments, or may replace features in other embodiments.

[0013] In this text, the terms "includes / have" mean the presence of a feature, component, step, or constituent element, and do not exclude the presence or addition of one or more other features, components, steps, or constituent elements. [Brief explanation of the drawing]

[0014] Elements and features described in one drawing and one embodiment of the embodiments of the present invention may be combined with elements and features shown in one or more drawings or embodiments. In addition, similar reference numerals in the drawings may indicate corresponding elements in multiple drawings, and may indicate corresponding elements used in one or more embodiments.

[0015] The included drawings are used to further understand embodiments of the present invention, constitute part of the specification, illustrate embodiments of the present invention, and explain the principles of the present invention together with the text. Note that the drawings described below are merely some embodiments of the present invention, and those skilled in the art will readily be able to conceive of other drawings based on these. [Figure 1] This is a schematic diagram of an application scenario in which single TRP (power control parameters for one group) is used for initial transmission and multi-TRP (power control parameters for multiple groups) is used for retransmission. [Figure 2] This is a schematic diagram of an application scenario using a single TRP (one group of power control parameters) for both initial transmission and retransmission. [Figure 3] This is a schematic diagram of an application scenario that uses multi-TRP (multiple groups of power control parameters) for both initial transmission and retransmission. [Figure 4]This is a schematic diagram of an application scenario in which multi-TRP (power control parameters of multiple groups) are used for initial transmission and single-TRP (power control parameters of one group) are used for retransmission. [Figure 5] This is a schematic diagram of an example of an uplink data transmission method according to an embodiment of the present invention. [Figure 6] This is a schematic diagram of another example of the uplink data transmission method according to an embodiment of the present invention. [Figure 7] Figures 7 to 9 are schematic diagrams of uplink data transmission in a Type 1 CG configuration corresponding to the scenario in Figure 1. [Figure 8] Figures 7 to 9 are schematic diagrams of uplink data transmission in a Type 1 CG configuration corresponding to the scenario in Figure 1. [Figure 9] Figures 7 to 9 are schematic diagrams of uplink data transmission in a Type 1 CG configuration corresponding to the scenario in Figure 1. [Figure 10] Figures 10 to 12 are schematic diagrams of uplink data transmission in a Type 1 CG configuration corresponding to the scenario in Figure 2. [Figure 11] Figures 10 to 12 are schematic diagrams of uplink data transmission in a Type 1 CG configuration corresponding to the scenario in Figure 2. [Figure 12] Figures 10 to 12 are schematic diagrams of uplink data transmission in a Type 1 CG configuration corresponding to the scenario in Figure 2. [Figure 13] Figures 13 and 14 are schematic diagrams of uplink data transmission in a Type 1 CG configuration corresponding to the scenario in Figure 3. [Figure 14] Figures 13 and 14 are schematic diagrams of uplink data transmission in a Type 1 CG configuration corresponding to the scenario in Figure 3. [Figure 15] Figures 15 and 16 are schematic diagrams of uplink data transmission in a Type 1 CG configuration corresponding to the scenario in Figure 4. [Figure 16] Figures 15 and 16 are schematic diagrams of uplink data transmission in a Type 1 CG configuration corresponding to the scenario in Figure 4. [Figure 17] Figures 17 to 19 are schematic diagrams of uplink data transmission in a Type 2 CG configuration corresponding to the scenario of FIG. 1. [Figure 18] Figures 17 to 19 are schematic diagrams of uplink data transmission in a Type 2 CG configuration corresponding to the scenario of FIG. 1. [Figure 19] Figures 17 to 19 are schematic diagrams of uplink data transmission in a Type 2 CG configuration corresponding to the scenario of FIG. 1. [Figure 20] Figures 20 to 22 are schematic diagrams of uplink data transmission in a Type 2 CG configuration corresponding to the scenario of FIG. 2. [Figure 21] Figures 20 to 22 are schematic diagrams of uplink data transmission in a Type 2 CG configuration corresponding to the scenario of FIG. 2. [Figure 22] Figures 20 to 22 are schematic diagrams of uplink data transmission in a Type 2 CG configuration corresponding to the scenario of FIG. 2. [Figure 23] Figures 23 and 24 are schematic diagrams of uplink data transmission in a Type 2 CG configuration corresponding to the scenario of FIG. 3. [Figure 24] Figures 23 and 24 are schematic diagrams of uplink data transmission in a Type 2 CG configuration corresponding to the scenario of FIG. 3. [Figure 25] Figures 25 and 26 are schematic diagrams of uplink data transmission in a Type 2 CG configuration corresponding to the scenario of FIG. 4. [Figure 26] Figures 25 and 26 are schematic diagrams of uplink data transmission in a Type 2 CG configuration corresponding to the scenario of FIG. 4. [Figure 27] It is a schematic diagram of an example of a transmission device for uplink data according to an embodiment of the present invention. [Figure 28] It is a schematic diagram of another example of a transmission device for uplink data according to an embodiment of the present invention. [Figure 29] It is a schematic diagram of a communication system according to an embodiment of the present invention. [Figure 30] It is a schematic diagram of a terminal device according to an embodiment of the present invention. [Modes for carrying out the invention]

[0016] The above and other features of the present invention will become apparent from the following description. Specific embodiments of the present invention are disclosed in detail in the specification and drawings, and some embodiments in which the principles of the present invention can be employed are shown. However, the present invention is not limited to the embodiments described. The present invention includes all modified, altered and equivalent versions within the scope of the appended claims. Embodiments of the present invention will be described below with reference to the drawings. These embodiments are merely illustrative and do not limit the present invention.

[0017] In embodiments of the present invention, terms such as "first," "second," etc., are used in titles to distinguish different elements, but do not represent a spatial arrangement or temporal order of these elements, and these elements are not limited to these terms. The term "and / or" includes any one or more of the terms listed in the relevant list and all combinations thereof. The terms "include," "comprehensible," "have," etc., mean the presence of the listed features, elements, components, or components, but do not exclude the presence or addition of one or more other features, elements, components, or components.

[0018] In the embodiments of the present invention, singular nouns such as "one" and "the" should be understood broadly as "one type" or "one category," including plural forms, and not limited to "one." Furthermore, the term "the foregoing" should be understood to include both singular and plural forms unless the context explicitly indicates otherwise. Also, unless the context explicitly indicates otherwise, the term "as described" should be understood as "at least partially described," and the term "based on" should be understood as "based on at least partially."

[0019] In embodiments of the present invention, the terms "communication network" or "wireless communication network" may mean a network conforming to any communication standard such as Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA®), or High-Speed ​​Packet Access (HSPA).

[0020] Furthermore, communication between devices in a communication system may be carried out according to a communication protocol of any stage, and such communication protocol may include, but is not limited to, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and future 5G, New Radio (NR), and / or other currently known communication protocols or other communication protocols to be developed in the future.

[0021] In embodiments of the present invention, the term "network device" means, for example, a device within a communication system that allows a terminal device to access the communication system and provides services to said terminal device. A network device may include, but is not limited to, a base station (BS), access point (AP), transmission / reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0022] Among these, base stations may include, but are not limited to, Node B (NodeB or NB), Evolutionary Node B (eNodeB or eNB), and 5G base stations (gNB), as well as Remote Radio Heads (RRH), Remote Radio Units (RRU), relays, or low-power nodes (e.g., femto, pico). The term “base station” may also include some or all of these functions, and each base station may provide communication coverage to a specific geographic area. The term “cell” may mean a base station and / or its coverage area, depending on the context in which the term is used.

[0023] In embodiments of the present invention, the terms "User Equipment" (UE) or "Terminal Equipment" (TE) refer to equipment that accesses a communication network and receives network services, for example, via a network device. Terminal equipment may be fixed or mobile and may be referred to as a mobile station (MS), terminal, subscriber station (SS), access terminal (AT), station, etc.

[0024] Among these, terminal devices may include, but are not limited to, mobile phones (cellular phones), personal digital assistants (PDAs), radio modulators / demodulators, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smartphones, smartwatches, and digital cameras.

[0025] For example, in scenarios such as the Internet of Things (IoT), the user device may be a monitoring or measurement device or apparatus, and may include, but is not limited to, machine-type communication (MTC) terminals, in-vehicle communication terminals, device-to-device (D2D) terminals, and machine-to-machine (M2M) terminals.

[0026] In current standards, NR has introduced uplink transmission with configured grant to reduce uplink data transmission delay and improve transmission reliability. Uplink transmission with configured grant is typically used to transmit PUSCH (Physical Uplink Shared Channel) and is mainly classified into two types: Type 1 PUSCH transmissions with a configured grant (abbreviated as Type 1 PUSCH) and Type 2 PUSCH transmissions with a configured grant (abbreviated as Type 2 PUSCH).

[0027] Regarding Type 1 push transmissions with a configured grant: The resources used for the initial transmission of a Type 1 PUSCH are configured by RRC (Radio Resource Control) signaling, such as configuredGrantConfig. Once this configuration information is valid, the terminal device may transmit a PUSCH using the configured resources, and the PUSCH does not need to be scheduled by a PDCCH (Physical Downlink Control Channel).

[0028] Retransmission of a Type 1 PUSCH is scheduled by a PDCCH. The Cyclic Redundancy Check (CRC) of this PDCCH is scrambled by a configured scheduling Radio Network Temporary Identifier (CS-RNTI), and the corresponding New Data Indicator (NDI) field is 1 (PDCCH with CRC scrambled by CS-RNTI with NDI=1). In addition, some of the parameters required for this PUSCH retransmission are provided by RRC signaling corresponding to a Type 1 configured grant (e.g., configuredGrantConfig). Specific details may refer to existing standards.

[0029] Regarding Type 2 push transmissions with a configured grant: The initial transmission of a Type 2 pusher is triggered / activated by PDCCH / DCI (Downlink Control Information). Some of the parameters used in the corresponding pusher transmission are configured by higher-layer configuration information, while others are indicated by this PDCCH / DCI.

[0030] Retransmission of a Type 2 pusher is scheduled by a PDCCH. The CRC of this PDCCH is scrambled by CS-RNTI, and the corresponding NDI field is 1 (PDCCH with CRC scrambled by CS-RNTI with NDI=1). Some of the parameters required for this pusher retransmission are provided by the corresponding Type 2 configured grant configuration (e.g., configuredGrantConfig), while other parts are indicated by the PDCCH / DCI. Specific details may refer to existing standards.

[0031] Embodiments of the present invention are applicable to the following four scenarios.

[0032] Scenario 1: As shown in Figure 1, if an uplink transmission with a configuration grant is configured as a single TRP (sTRP) transmission and the corresponding uplink transmission is detected as not being received properly, the network device (gNB) may initiate retransmission of the uplink transmission, which is a multiple TRP (mTRP) transmission.

[0033] According to the above method, if one uplink transmission (sTRP) fails, the gNB may instruct the terminal equipment (UE) to retransmit the uplink transmission using a more reliable uplink transmission method (mTRP) to improve robustness.

[0034] Scenario 2: As shown in Figure 2, if an uplink transmission with a configuration grant is configured as a single TRP transmission and the gNB detects that it cannot successfully receive the corresponding uplink transmission, the gNB may initiate a retransmission of the uplink transmission, using the same or a different TRP as the initial transmission.

[0035] According to the method described above, if one uplink transmission (sTRP) fails, the gNB may flexibly instruct the UE to retransmit the uplink transmission using a more reliable TRP in order to improve robustness.

[0036] Scenario 3: As shown in Figure 3, if an uplink transmission with a configuration grant is configured as a multi-TRP transmission and the gNB detects that it cannot successfully receive the corresponding uplink transmission, it may initiate a retransmission of the uplink transmission. Since the gNB may not be able to determine which TRP corresponds to which link is experiencing problems, the retransmission will use the same TRP as the initial transmission.

[0037] According to the method described above, if a single (mTRP) uplink transmission fails, the gNB may flexibly instruct the UE to retransmit the uplink transmission using multiple TRPs to improve robustness.

[0038] Scenario 4: As shown in Figure 4, if an uplink transmission with a configuration grant is configured as a multi-TRP transmission and the gNB detects that it cannot successfully receive the corresponding uplink transmission, the gNB may initiate a retransmission of the uplink transmission, which will use the same or a different TRP as the initial transmission.

[0039] According to the above method, if a single uplink transmission (mTRP) fails, the gNB may flexibly instruct the UE to retransmit the uplink transmission using sTRP. Since sTRP uplink transmission (one time-domain resource) has a shorter usage time than mTRP uplink transmission (two time-domain resources), this method can reduce the resulting delay. Furthermore, this method can improve robustness by preventing the UE from transmitting again on a TRP with poor channel conditions.

[0040] The following describes various embodiments of the present invention with reference to the drawings. These embodiments are merely illustrative and do not limit the present invention.

[0041] <Example 1> An embodiment of the present invention provides a method for transmitting uplink data and will be described from the perspective of the terminal device.

[0042] Figure 5 is a schematic diagram of an example of an uplink data transmission method according to an embodiment of the present invention. As shown in Figure 5, the method includes the following steps.

[0043] Step 501: The terminal device receives a PDCCH transmitted by the network device. The PDCCH instructs the terminal device to send a PUSCH retransmission. Here, the CRC corresponding to the PDCCH is scrambled by CS-RNTI, and the NDI field of the PDCCH is 1.

[0044] Step 502: The terminal device transmits the PUSCH retransmission based on the first power control parameter of the configuration grant configuration (CG configuration) corresponding to the PUSCH retransmission.

[0045] In embodiments of the present invention, the first power control parameter includes at least one of P0, Alpha, Pathloss Reference Signal (PL-RS), and Close loop index.

[0046] In embodiments of the present invention, the first power control parameter correlates with at least one of the following: a power control instruction corresponding to the PDCCH, an SRS resource instruction corresponding to the PDCCH, and an SRS resource set configured for PUSCH transmission for the terminal device.

[0047] According to the method of the embodiment of the present invention, the terminal device solves the transmission problem of retransmission of uplink transmissions with configuration grants by transmitting a retransmission of PUSCH based on a power control parameter (first power control parameter) correlated with at least one of the above elements, and if an uplink transmission with a configuration grant fails once, the network device can improve robustness by instructing the terminal device to retransmit the uplink transmission with a configuration grant using a more reliable uplink transmission method.

[0048] In the embodiments of the present invention, the specific meanings of P0, Alpha, PL-RS, and Close loop index may be explained by referring to related technologies, and such explanation is omitted here.

[0049] In some embodiments, the correlation of a first power control parameter with a corresponding power control instruction in the PDCCH means that the closed-loop index corresponding to the first power control parameter and the closed-loop index indicated by the PDCCH are identical. That is, the PDCCH indicates a closed-loop index for uplink power control, and if the closed-loop index indicated by the PDCCH is identical to the closed-loop index for uplink power control corresponding to the first power control parameter, the terminal device transmits a retransmission of the PUSCH based on the first power control parameter. The advantage of this method is that the uplink closed-loop power control index of the PDCCH is used to determine the uplink power control parameter of the corresponding configuration grant configuration used for the corresponding PUSCH retransmission, thus avoiding ambiguity in the power control parameter indication. Furthermore, because the PDCCH can provide dynamic indications, it is possible to more flexibly indicate which configuration grant configuration's power control parameter can be used for PUSCH retransmission, allowing the PUSCH to use more appropriate uplink transmit power in scenarios with rapidly changing channel environments, thereby improving system performance.

[0050] In some embodiments, a power control instruction corresponding to a PDCCH means an instruction by the PDCCH for at least one of the following power control parameters: P0, Alpha, Pathloss Reference Signal (PL-RS), and Closed Loop Index.

[0051] In the above embodiment, the power control instruction corresponding to the PDCCH includes an instruction for at least one of P0, Alpha, a path loss reference signal, and a closed-loop index, and the terminal device transmits a retransmission of PUSCH using the first power control parameter of the CG configuration corresponding to the parameter indicated by the power control instruction corresponding to the PDCCH. For example, if the PDCCH indicates P0 and the first power control parameter of the CG configuration includes P0 accordingly, the terminal device transmits a retransmission of PUSCH based on the P0 indicated by the first power control parameter of the CG configuration. The operation of other parameters is similar.

[0052] In some embodiments, a power control instruction corresponding to a PDCCH means that the PDCCH instructs one or two groups of power control parameters, each group of power control parameters including at least one of P0, Alpha, Pathloss Reference Signal (PL-RS), and Close loop index.

[0053] In the above embodiment, the power control instruction corresponding to PDCCH includes one or two groups of power control parameters, and the CG configuration consists of two power control parameters (both of these two groups of power control parameters are referred to as the "first power control parameters"). Here, the power control instruction corresponding to PDCCH is intended to indicate the power control parameters in the CG configuration used for PUSCH transmission. For example, if the power control instruction corresponding to PDCCH indicates one group of power control parameters, the terminal device transmits PUSCH based on one of the two groups of power control parameters in the CG configuration. If the power control instruction corresponding to PDCCH indicates two groups of power control parameters, the terminal device transmits PUSCH based on the two groups of power control parameters in the CG configuration. The advantage of this instruction method is that, through an implicit instruction method, the number of power control parameter groups in the CG configuration used for PUSCH retransmission is determined using the instruction for the number of power control parameter groups by PDCCH, eliminating the need to introduce additional instruction signaling and saving resources.

[0054] In the above embodiment, the inclusion of one or two groups of power control parameters in a power control instruction corresponding to a PDCCH may mean that, if each group of power control parameters includes or corresponds to one closed-loop index, and the closed-loop index of one or two of these groups of power control parameters is the same as the closed-loop index corresponding to the first power control parameter configured by CG, then the terminal device transmits a retransmission of the PUSCH using the first power control parameter configured by CG.

[0055] In some embodiments, the correlation of a first power control parameter with an SRS resource instruction corresponding to the PDCCH means that the first power control parameter is determined by the SRS resource instruction, which includes a first SRS resource instruction and / or a second SRS resource instruction. That is, the PDCCH includes a first SRS resource instruction and / or a second SRS resource instruction, which indicate a first power control parameter in the corresponding CG configuration, and the terminal device determines the corresponding first power control parameter according to the first SRS resource instruction and / or the second SRS resource instruction, and transmits a PUSCH retransmission using the determined first power control parameter. The advantage of this instruction method is that, by using an implicit instruction method, the power control parameter of the CG configuration used for PUSCH retransmission is determined using the PDCCH instruction for the SRS resource, eliminating the need to introduce additional instruction signaling and saving resources.

[0056] In some embodiments, an SRS resource instruction corresponding to a PDCCH means an instruction by the PDCCH for a first SRS resource set and / or a second SRS resource set, where the first SRS resource set is used for PUSCH transmissions and the second SRS resource set is used for PUSCH transmissions.

[0057] In the above embodiment, the SRS resource instruction corresponding to PDCCH includes an instruction for a first SRS resource set and / or an instruction for a second SRS resource set, the two SRS resource sets used to transmit PUSCH. The terminal device determines a first power control parameter of the CG configuration based on the instruction for the first SRS resource set and / or the instruction for the second SRS resource set, and uses this first power control parameter of the CG configuration to transmit a retransmission of PUSCH. The advantage of this instruction method is that, through an implicit instruction method, the power control parameter of the CG configuration used for PUSCH retransmission is determined using the PDCCH instruction for the SRS resource set, eliminating the need to introduce additional instruction signaling and thus saving resources.

[0058] In some embodiments, the SRS resource instruction corresponding to PDCCH means the first SRS resource instruction and / or the second SRS resource instruction.

[0059] In the above embodiment, the SRS resource instruction corresponding to PDCCH includes an instruction for a first SRS resource and / or an instruction for a second SRS resource, and the terminal device determines a first power control parameter for the CG configuration based on the instruction for the first SRS resource and / or the instruction for the second SRS resource, and transmits a retransmission of PUSCH using this first power control parameter for the CG configuration.

[0060] In some embodiments, the correlation of a first power control parameter with the set of SRS resources configured for push transmissions for the terminal device means that the first power control parameter is determined by the number of SRS resource sets configured in the active BWP (Band Width Part) corresponding to the push retransmission transmitted by the terminal device. That is, the first power control parameter of the CG configuration is determined based on the number of SRS resource sets configured for push transmissions in the active BWP, and for example, if two SRS resource sets for push transmissions are configured in the active BWP, the terminal device transmits a push retransmission based on the first power control parameter of the CG configuration. This allows the terminal device to avoid ambiguity in power control parameter indication by transmitting a push based on the first power control parameter of the CG configuration when two groups of SRS resources are configured.

[0061] In some embodiments, the SRS resource set configured for a terminal device for a push transmission means one or two SRS resource sets configured in the active BWP corresponding to the push retransmission transmitted by the terminal device, where these one or two SRS resource sets are for push transmissions.

[0062] In the above embodiment, the terminal device can avoid the problem of ambiguity in power control parameter indication by deciding whether or not to transmit a PUSCH retransmission using the first power control parameter of the CG configuration based on the number of SRS resource sets configured in the above active BWP. An advantage of this indication method is that, by using an implicit indication method, the power control parameter of the CG configuration used for PUSCH retransmission is determined based on the number of SRS resource sets used for PUSCH transmission in the above active BWP configured by RRC signaling, eliminating the need to introduce additional instruction signaling and saving resources.

[0063] In some embodiments of the present invention, the terminal device transmits a PUSCH retransmission based on a second power control parameter, where the second power control parameter is a parameter in UE-specific PUSCH configuration information. That is, the terminal device may transmit a PUSCH retransmission using the first and second power control parameters of the CG configuration.

[0064] In embodiments of the present invention, the second power control parameter includes at least one of P0, Alpha, Pathloss Reference Signal (PL-RS), and Close loop index.

[0065] For a detailed explanation of the meaning of each of the above parameters, please refer to the relevant technologies; therefore, we will omit that explanation here.

[0066] In embodiments of the present invention, the second power control parameter correlates with at least one of the following: a power control instruction corresponding to the PDCCH, an SRS resource instruction corresponding to the PDCCH, and an SRS resource set configured for PUSCH transmission for the terminal device.

[0067] The specific meanings of the related terms and the elements mentioned above have already been explained previously, so we will omit that explanation here.

[0068] The above has provided a schematic description of embodiments of the present invention with reference to Figure 5, but the present invention is not limited thereto. For example, the execution order between each operation may be appropriately adjusted, several other operations may be added, or some of these operations may be deleted. Those skilled in the art can make appropriate modifications to the above description without being limited to the description in Figure 5.

[0069] Figure 6 is a schematic diagram of another example of an uplink data transmission method according to an embodiment of the present invention. As shown in Figure 6, the method includes the following steps.

[0070] Step 601: The terminal device receives a PDCCH transmitted by the network device, and the PDCCH instructs the terminal device to send a PUSCH retransmission. Here, the CRC corresponding to the PDCCH is scrambled by CS-RNTI, and the NDI field of the PDCCH is 1.

[0071] Step 602: The terminal device transmits the PUSCH retransmission based on a third power control parameter, where the third power control parameter is a parameter in the UE-specific PUSCH configuration information.

[0072] In embodiments of the present invention, the third power control parameter includes at least one of P0, Alpha, Pathloss Reference Signal (PL-RS), and Close loop index.

[0073] For a detailed explanation of the meaning of each of the above parameters, please refer to the relevant technologies; therefore, we will omit that explanation here.

[0074] In embodiments of the present invention, the third power control parameter correlates with at least one of the following: a power control instruction corresponding to the PDCCH, an SRS resource instruction corresponding to the PDCCH, and an SRS resource set configured for PUSCH transmission for the terminal device.

[0075] According to the method of the embodiment of the present invention, the terminal device solves the transmission problem of retransmission of uplink transmissions with configuration grants by transmitting a PUSCH retransmission based only on a power control parameter (third power control parameter) associated with at least one of the above elements in the UE-specific PUSCH configuration information, and if an uplink transmission with a configuration grant fails once, the network device can improve robustness by instructing the terminal device to retransmit the uplink transmission with a configuration grant using a more reliable uplink transmission method.

[0076] In some embodiments, the correlation of a third power control parameter with a power control instruction corresponding to a PDCCH means that the closed-loop index corresponding to the third power control parameter and the closed-loop index indicated by the PDCCH are the same, and that the power control parameter corresponding to the closed-loop index is not configured in the configuration grant configuration (CG configuration) corresponding to the PUSCH retransmission. That is, if the power control parameter corresponding to the closed-loop index is not configured in the CG configuration corresponding to the PUSCH retransmission, the PUSCH retransmission is sent using the power control parameter corresponding to the UE-specific PUSCH configuration information indicated by the PDCCH.

[0077] In the above embodiment, the power control instruction corresponding to PDCCH has already been explained previously, so that explanation will be omitted here.

[0078] In some embodiments, the correlation of a third power control parameter with an SRS resource instruction corresponding to a PDCCH means that the third power control parameter is determined by the SRS resource instruction, which includes a first SRS resource instruction and / or a second SRS resource instruction. That is, the third power control parameter is determined based on the first SRS resource instruction and / or the second SRS resource instruction corresponding to the PDCCH, and the PUSCH retransmission is transmitted using the third power control parameter.

[0079] In the above embodiment, the SRS resource instruction corresponding to PDCCH has already been explained previously, so that explanation will be omitted here.

[0080] In some embodiments, the correlation of a third power control parameter with the SRS resource set configured for PUSCH transmissions for a terminal device means that the third power control parameter is determined by the number of SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device. That is, the third power control parameter is determined based on the number of SRS resource sets configured in the active BWP, and the PUSCH retransmission is transmitted using the third power control parameter. For example, if the number of SRS resource sets configured for PUSCH transmissions in the active BWP corresponding to the PUSCH retransmission is 2, the terminal device transmits the PUSCH retransmission based on the third power control parameter. An advantage of this instruction method is that, by using an implicit instruction method, resources can be saved by determining the UE-specific PUSCH power control parameter used for PUSCH retransmissions based on the number of SRS resource sets for PUSCH transmissions in the active BWP of the RRC signaling configuration, without the need to introduce additional instruction signaling.

[0081] In the above embodiment, the SRS resource set configured for the terminal device has already been described previously, so that description will be omitted here.

[0082] To further clarify the methods of the embodiments of the present invention, the application of the methods of the embodiments of the present invention will be described below with reference to the four scenarios described above.

[0083] Figures 7 to 16 are schematic diagrams of 10 aspects of a Type 1 configuration grant, where Figures 7 to 9 correspond to Scenario 1, Figures 10 to 12 correspond to Scenario 2, Figures 13 and 14 correspond to Scenario 3, and Figures 15 and 16 correspond to Scenario 4. In the example of Figures 7 to 16, in the active BWP corresponding to the transmission of a PUSCH retransmission, the terminal device is configured with two SRS resource sets for PUSCH transmission, namely the first SRS resource set and the second SRS resource set. Also in the example of Figures 7 to 16, the parameter PUSCH-ClosedLoopIndex is used to specify the power control loop index or closed power control loop index, and the parameter powerControlLoopToUse is used to specify the power control loop index.

[0084] In the example in Figure 7, PUSCH retransmissions associated with the same closed-loop index are transmitted using the CG's power control parameter (the first power control parameter mentioned above), while other PUSCH retransmissions are transmitted using the power control parameter (the second power control parameter) indicated by DCI.

[0085] As shown in Figure 7, in this example, the configuration of the configured grant is type 1 CG. This type 1 CG includes ConfiguredGrantConfig and rrc-ConfiguredUplinkGrant. ConfiguredGrantConfig has one power control parameter group configured, including p0 and Alpha (p0-PUSCH-AlphaSet#3), and the ID of the power control loop corresponding to this power control parameter group is 0. ConfiguredGrantConfig does not have a power control parameter group configured where the ID of the power control loop is 1. rrc-ConfiguredUplinkGrant has a path loss reference signal (PL-RS#3) configured, and the ID of the power control loop corresponding to this path loss reference signal is 0. rrc-ConfiguredUplinkGrant does not have a path loss reference signal configured where the ID of the power control loop is 1.

[0086] As shown in Figure 7, in this example, the CRC of the PDCCH that schedules the retransmission of the PUSCH with configuration grants is scrambled by CS-RNTI, and the NDI field included in the DCI corresponding to this PDCCH is 1. The DCI corresponding to this PDCCH includes SRI#set1 and SRI#set2.

[0087] Here, SRI#set1 may be an explicit instruction (an instruction in the SRI field) and indicates one SRS resource in the first SRS resource set (corresponding to TRP#1). SRI#set1 may also be an implicit instruction and indicate one SRS resource in the first SRS resource set; for example, if the first SRS resource set contains only one SRS resource, there is no corresponding SRI field. When the UE receives this PDCCH, it means that the UE should transmit uplink data according to this SRS resource in the first SRS resource set. SRI#set1 is associated with PL-RS (PL-RS#1), i.e., PL-RS#1 is a path loss reference signal associated with the first SRS resource set. Alternatively, PL-RS#1 is a path loss reference signal associated with the selected SRS resource in the first SRS resource set. The power control loop ID corresponding to this path loss reference signal is 1. Furthermore, SRI#set1 is associated with a power control parameter group, which includes p0 and Alpha, i.e., p0-PUSCH-AlphaSet#1, and the power control loop ID corresponding to this power control parameter group is 1. The power control loop ID corresponding to SRI#set1 is also 1.

[0088] Here, SRI#set2 may be an explicit instruction (an instruction in the SRI field) indicating one SRS resource in the second SRS resource set (corresponding to TRP#2). SRI#set2 may also be an implicit instruction indicating one SRS resource in the second SRS resource set; for example, if the second SRS resource set contains only one SRS resource, there is no corresponding SRI field. When the UE receives this PDCCH, it means that the UE needs to transmit uplink data based on this SRS resource in the second SRS resource set. SRI#set2 is associated with PL-RS (PL-RS#2), i.e., PL-RS#2 is a path loss reference signal associated with the second SRS resource set. Alternatively, PL-RS#2 is a path loss reference signal associated with the selected SRS resource in the second SRS resource set. The power control loop ID corresponding to this path loss reference signal is 0. Furthermore, SRI#set2 is associated with a power control parameter group, which includes p0 and Alpha, i.e., p0-PUSCH-AlphaSet#2, and the power control loop ID corresponding to this power control parameter group is 0. Also, the power control loop ID corresponding to SRI#set2 is 0.

[0089] As shown in Figure 7, in this example, the retransmission of PUSCH with a configuration grant has two parts with identical data bits, i.e., the retransmission of PUSCH is repeated, i.e., consisting of Rep#1 and Rep#2. In this example, Rep#1 corresponds to the PUSCH portion sent to TRP#1, and Rep#2 corresponds to the PUSCH portion sent to TRP#2, and these are transmitted using independent power control parameters.

[0090] As shown in Figure 7, SRI#set1 is used to indicate Rep#1, and accordingly, the power control loop ID corresponding to Rep#1 is 1. Since the CG configuration does not have power control parameters associated with power control loop ID=1, Rep#1 is transmitted using the power control parameters indicated by the scheduling DCI; that is, this PUSCH Rep#1 is transmitted based on the power control parameters p0-PUSCH-AlphaSet#1 and PL-RS#1.

[0091] As shown in Figure 7, SRI#set2 is used to indicate Rep#2, and accordingly, the power control loop ID corresponding to Rep#2 is 0. Since the CG configuration has power control parameters associated with power control loop ID=0, Rep#2 is transmitted using the power control parameters corresponding to power control loop ID=0 in the CG configuration, i.e., this PUSCH Rep#2 is transmitted based on the power control parameters p0-PUSCH-AlphaSet#3 and PL-RS#3.

[0092] In the example in Figure 8, all PUSCH retransmissions are sent using the power control parameters (the third power control parameters mentioned above) instructed by DCI.

[0093] As shown in Figure 8, in this example, the configuration of the configuration grant, the PDCCH that schedules the retransmission of the PUSCH with the configuration grant, and the retransmission of the PUSCH with the configuration grant are the same as in Figure 7, and their explanation is omitted here.

[0094] As shown in Figure 8, SRI#set1 is used to indicate Rep#1, and accordingly, the power control loop ID corresponding to Rep#1 is 1. In this example, the retransmission of PUSCH is independent of the power control parameters configured in the CG configuration; that is, Rep#1 is transmitted using the power control parameters indicated by the scheduling DCI, i.e., this PUSCH Rep#1 is transmitted according to the power control parameters p0-PUSCH-AlphaSet#1 and PL-RS#1.

[0095] As shown in Figure 8, SRI#set2 is used to indicate Rep#2, and accordingly, the power control loop ID corresponding to Rep#2 is 0. In this example, the retransmission of PUSCH is independent of the power control parameters configured in the CG configuration; that is, Rep#2 is transmitted using the power control parameters indicated by the scheduling DCI. In other words, PUSCH Rep#2 is transmitted according to the power control parameters p0-PUSCH-AlphaSet#2 and PL-RS#2.

[0096] In the example in Figure 9, all PUSCH retransmissions are sent using the power control parameters of the CG configuration (the first power control parameters described above).

[0097] As shown in Figure 9, in this example, the configuration of the configuration grant, the PDCCH that schedules the retransmission of the PUSCH with the configuration grant, and the retransmission of the configuration grant PUSCH are the same as in Figure 7, and their explanation is omitted here. Here, unlike in Figure 7, Rep#1 and Rep#2 are transmitted using the same power control parameters provided by the CG configuration.

[0098] As shown in Figure 9, SRI#set1 is used to indicate Rep#1, and accordingly, the power control loop ID corresponding to Rep#1 is 1. In this example, the PUSCH retransmission is sent according only to the power control parameters configured in the CG configuration, i.e., Rep#1 is sent using the power control parameters that schedule the CG configuration, i.e., this PUSCH Rep#1 is sent according to the power control parameters p0-PUSCH-AlphaSet#3 and PL-RS#3.

[0099] As shown in Figure 9, SRI#set2 is used to indicate Rep#2, and accordingly, the power control loop ID corresponding to Rep#2 is 0. In this example, the PUSCH retransmission is sent according only to the power control parameters configured in the CG configuration, i.e., Rep#2 is sent using the power control parameters that schedule the CG configuration, i.e., this PUSCH Rep#2 is sent according to the power control parameters p0-PUSCH-AlphaSet#3 and PL-RS#3.

[0100] In the example in Figure 10, all PUSCH retransmissions are sent using the power control parameters indicated by DCI (the third power control parameter mentioned above).

[0101] As shown in Figure 10, the configuration of the configuration grant in this example is the same as in Figure 7, and its explanation is omitted here.

[0102] As shown in Figure 10, in this example, the CRC of the PDCCH that schedules the retransmission of the PUSCH with a configuration grant is scrambled by CS-RNTI, and the NDI field included in the DCI corresponding to the PDCCH is 1. SRI#set1 is included in the DCI corresponding to this PDCCH.

[0103] Here, the instructions for SRI#set1 are the same as in Figure 7, so we will omit their explanation here. Also, unlike the example in Figure 7, the DCI above does not contain instructions for SRI#set2.

[0104] As shown in Figure 10, in this example, to accommodate a single TRP transmission, the retransmission of PUSCH with a configuration grant is configured only partially. Here, SRI#set1 is used to indicate this PUSCH retransmission, and accordingly, the power control loop ID corresponding to this PUSCH retransmission is 1. In this example, since there is no configuration in the CG configuration where the power control loop ID is 1 (which is NULL), the PUSCH retransmission is sent according to the power control parameters indicated by DCI, i.e., this PUSCH retransmission is sent according to the power control parameters p0-PUSCH-AlphaSet#1 and PL-RS#1.

[0105] In the example in Figure 11, all PUSCH retransmissions are sent using the power control parameters of the CG configuration (the first power control parameters described above).

[0106] As shown in Figure 11, the configuration of the configuration grant in this example is the same as in Figure 7, and its explanation is omitted here.

[0107] As shown in Figure 11, in this example, the CRC of the PDCCH that schedules the retransmission of the PUSCH with a configuration grant is scrambled by CS-RNTI, and the NDI field included in the DCI corresponding to the PDCCH is 1. This DCI corresponding to the PDCCH contains SRI#set1.

[0108] Here, the instruction for SRI#set1 is the same as in Figure 7, so its explanation is omitted here. Also, unlike the example in Figure 7, the DCI above does not have the instruction for SRI#set2.

[0109] As shown in Figure 11, in this example, to accommodate a single TRP transmission, the retransmission of PUSCH with a configuration grant is configured only partially. Here, SRI#set1 is used to indicate this PUSCH retransmission, and accordingly, the power control loop ID corresponding to this PUSCH retransmission is 1. In this example, there is no configuration in the CG configuration where the power control loop ID is 1 (which is NULL), but the PUSCH retransmission is sent according to the power control parameters of the CG configuration, i.e., this PUSCH retransmission is sent according to the power control parameters p0-PUSCH-AlphaSet#3 and PL-RS#3.

[0110] In the example in Figure 12, all PUSCH retransmissions are sent using the power control parameters of the CG configuration (the first power control parameters described above). Unlike the example in Figure 11, all of these PUSCH retransmissions are associated with the same closed-loop index as the CG configuration.

[0111] As shown in Figure 12, the configuration of the configuration grant in this example is the same as in Figure 7, and its explanation is omitted here.

[0112] As shown in Figure 12, in this example, the CRC of the PDCCH that schedules the retransmission of the PUSCH with a configuration grant is scrambled by CS-RNTI, and the NDI field included in the DCI corresponding to the PDCCH is 1. This DCI corresponding to the PDCCH contains SRI#set1.

[0113] Here, the instruction for SRI#set1 is the same as in Figure 7, so its explanation is omitted here. Also, unlike the example in Figure 7, the DCI above does not have the instruction for SRI#set2.

[0114] As shown in Figure 12, in this example, to accommodate a single TRP transmission, the retransmission of PUSCH with a configuration grant is partially configured. Here, SRI#set1 is used to indicate this PUSCH retransmission, and accordingly, the power control loop ID corresponding to this PUSCH retransmission is 0. In this example, since the power control parameters associated with power control loop ID=0 are configured in the CG configuration, this PUSCH retransmission is transmitted using the power control parameters corresponding to power control loop ID=0 in the CG configuration, i.e., this PUSCH retransmission is transmitted according to the power control parameters p0-PUSCH-AlphaSet#3 and PL-RS#3.

[0115] In the example in Figure 13, all PUSCH retransmissions are sent using the power control parameters of the CG configuration (the first power control parameters described above) according to the closed-loop index.

[0116] As shown in Figure 13, in this example, the configuration of the configuration grant is type 1 CG. This type 1 CG includes ConfiguredGrantConfig and rrc-ConfiguredUplinkGrant. ConfiguredGrantConfig has two power control parameter groups: one power control parameter group includes p0 and Alpha (p0-PUSCH-AlphaSet#3), and the ID of the power control loop corresponding to this power control parameter group is 0. The other power control parameter group includes p0 and Alpha (p0-PUSCH-AlphaSet#4), and the ID of the power control loop corresponding to this power control parameter group is 1. rrc-ConfiguredUplinkGrant has a path loss reference signal (PL-RS#3) with a power control loop ID of 0 and a path loss reference signal (PL-RS#4) with a power control loop ID of 1.

[0117] As shown in Figure 13, in this example, the PDCCH that schedules the retransmission of PUSCH with configuration grants and the retransmission of PUSCH with configuration grants are the same as in Figure 7, and their explanation is omitted here.

[0118] As shown in Figure 13, SRI#set1 is used to indicate Rep#1, and accordingly, the power control loop ID corresponding to Rep#1 is 1. In this example, the PUSCH retransmission is sent according to the power control parameters configured in the CG configuration (where the power control loop ID is the same). That is, Rep#1 is sent using the power control parameters of the CG configuration corresponding to power control loop ID=1, and that is, this PUSCH Rep#1 is sent according to the power control parameters p0-PUSCH-AlphaSet#4 and PL-RS#4.

[0119] As shown in Figure 13, SRI#set2 is used to indicate Rep#2, and accordingly, the power control loop ID corresponding to Rep#2 is 0. In this example, the PUSCH retransmission is sent according to the power control parameters configured in the CG configuration (where the power control loop ID is the same). That is, Rep#2 is sent using the power control parameters of the CG configuration corresponding to power control loop ID=0, i.e., this PUSCH Rep#2 is sent according to the power control parameters p0-PUSCH-AlphaSet#3 and PL-RS#3.

[0120] In the example in Figure 14, all PUSCH retransmissions are sent using the power control parameters indicated by DCI (the third power control parameter mentioned above).

[0121] As shown in Figure 14, in this example, the configuration of the configuration grant, the PDCCH that schedules the retransmission of the PUSCH with the configuration grant, and the retransmission of the PUSCH with the configuration grant are the same as in Figure 13, and their explanation is omitted here.

[0122] As shown in Figure 14, SRI#set1 is used to indicate Rep#1, and accordingly, the power control loop ID corresponding to Rep#1 is 1. In this example, the PUSCH retransmission (Rep#1) is transmitted according to the power control parameters indicated by DCI, i.e., it is transmitted according to the power control parameters p0-PUSCH-AlphaSet#1 and PL-RS#1.

[0123] As shown in Figure 14, SRI#set2 is used to indicate Rep#2, and accordingly, the power control loop ID corresponding to Rep#2 is 0. In this example, the PUSCH retransmission (Rep#2) is transmitted according to the power control parameters indicated by DCI, i.e., it is transmitted according to the power control parameters p0-PUSCH-AlphaSet#2 and PL-RS#2.

[0124] In the example in Figure 15, all PUSCH retransmissions are sent using the power control parameters of the CG configuration (the first power control parameters mentioned above) according to the closed-loop index.

[0125] As shown in Figure 15, in this example, the configuration of the configuration grant and the retransmission of the PUSCH with the configuration grant are the same as in Figure 13, and the PDCCH that schedules the retransmission of the PUSCH with the configuration grant is the same as in Figure 10, and its explanation is omitted here.

[0126] As shown in Figure 15, SRI#set1 is used to indicate this PUSCH retransmission, and its corresponding power control loop ID is 1. In this example, the CG configuration has a configuration corresponding to power control loop ID 1, so the PUSCH retransmission is transmitted according to the power control parameters of the CG configuration (where power control loop ID is 1), i.e., according to power control parameters p0-PUSCH-AlphaSet#4 and PL-RS#4.

[0127] In the example in Figure 16, all PUSCH retransmissions are sent according to the power control parameters (the third power control parameter mentioned above) instructed by DCI.

[0128] As shown in Figure 16, in this example, the configuration of the configuration grant and the retransmission of the PUSCH with the configuration grant are the same as in Figure 13, and the PDCCH that schedules the retransmission of the PUSCH with the configuration grant is the same as in Figure 10, and its explanation is omitted here.

[0129] As shown in Figure 16, SRI#set1 is used to indicate a PUSCH retransmission, and its corresponding power control loop ID is 1. In this example, the CG configuration has a configuration where the corresponding power control loop ID is 1, but the retransmitted PUSCH is still transmitted according to the power control parameters indicated by DCI, i.e., it is transmitted according to the power control parameters p0-PUSCH-AlphaSet#1 and PL-RS#1.

[0130] Figures 17 to 26 are schematic diagrams of 10 aspects of a Type 2 configuration grant, where Figures 17 to 19 correspond to Scenario 1, Figures 20 to 22 correspond to Scenario 2, Figures 23 and 24 correspond to Scenario 3, and Figures 25 and 26 correspond to Scenario 4. In the example of Figures 17 to 26, in the active BWP corresponding to the transmission of a PUSCH retransmission, the terminal device is configured with two SRS resource sets for PUSCH transmission, namely the first SRS resource set and the second SRS resource set. Also in the example of Figures 17 to 26, the parameter PUSCH-ClosedLoopIndex is used to indicate the power control loop index, or the closed power control loop index. The parameter powerControlLoopToUse is used to indicate the power control loop index.

[0131] In the example in Figure 17, PUSCH retransmissions associated with the same closed-loop index are transmitted using the CG's power control parameter (the first power control parameter described above), while other PUSCH retransmissions are transmitted using the power control parameter (the second power control parameter) indicated by DCI.

[0132] As shown in Figure 17, in this example, the configuration of the configured grant is type 2 CG. This type 2 CG contains ConfiguredGrantConfig. ConfiguredGrantConfig has one power control parameter group configured, which includes p0 and Alpha (p0-PUSCH-AlphaSet#3), and the power control loop ID corresponding to this power control parameter group is 0. This ConfiguredGrantConfig does not have a power control parameter group configured where the power control loop ID is 1.

[0133] As shown in Figure 17, in this example, the CRC of the PDCCH that schedules the retransmission of the PUSCH with a configuration grant is scrambled by CS-RNTI, and the NDI field included in the DCI corresponding to this PDCCH is 1. The DCI corresponding to this PDCCH includes SRI#set1 and SRI#set2.

[0134] Here, SRI#set1 may be an explicit instruction (an instruction in the SRI field) indicating one SRS resource in the first SRS resource set (corresponding to TRP#1). SRI#set1 may also be an implicit instruction indicating one SRS resource in the first SRS resource set; for example, if the first SRS resource set contains only one SRS resource, there is no corresponding SRI field. When the UE receives this PDCCH, it means that the UE should transmit uplink data according to the SRS resource in this first SRS resource set. SRI#set1 is associated with PL-RS (PL-RS#1), i.e., PL-RS#1 is a path loss reference signal associated with the first SRS resource set. Alternatively, PL-RS#1 is a path loss reference signal associated with the selected SRS resource in the first SRS resource set. The power control loop ID corresponding to this path loss reference signal is 1. Furthermore, SRI#set1 is further associated with a power control parameter group, which includes p0 and Alpha, i.e., p0-PUSCH-AlphaSet#1, and the power control loop ID corresponding to this power control parameter group is 1. Also, the power control loop ID corresponding to SRI#set1 is 1.

[0135] Here, SRI#set2 may be an explicit instruction (an instruction in the SRI field) indicating one SRS resource in the second SRS resource set (corresponding to TRP#2). SRI#set2 may also be an implicit instruction indicating one SRS resource in the second SRS resource set; for example, if the second SRS resource set contains only one SRS resource, there is no corresponding SRI field. When the UE receives PDCCH, it means that the UE needs to transmit uplink data based on the SRS resource in this second SRS resource set. SRI#set2 is associated with PL-RS (PL-RS#2), i.e., PL-RS#2 is a path loss reference signal associated with the second SRS resource set. Alternatively, PL-RS#2 is a path loss reference signal associated with the selected SRS resource in the second SRS resource set. The power control loop ID corresponding to this path loss reference signal is 0. Furthermore, SRI#set2 is associated with a power control parameter group, which includes p0 and Alpha, i.e., p0-PUSCH-AlphaSet#2, and the power control loop ID corresponding to this power control parameter group is 0. Also, the power control loop ID corresponding to SRI#set2 is 0.

[0136] As shown in Figure 17, in this example, the retransmission of PUSCH with a configuration grant has two parts with identical data bits, i.e., the retransmission of PUSCH is repeated, i.e., consisting of Rep#1 and Rep#2. In this example, Rep#1 corresponds to the PUSCH portion sent to TRP#1, and Rep#2 corresponds to the PUSCH portion sent to TRP#2, and these are transmitted using independent power control parameters.

[0137] As shown in Figure 17, SRI#set1 is used to indicate Rep#1, and the power control loop ID corresponding to Rep#1 is 1. In the CG configuration, since no power control parameters associated with power control loop ID=1 are configured, Rep#1 is transmitted using the power control parameters indicated by the scheduling DCI, i.e., this PUSCH Rep#1 is transmitted according to the power control parameter p0-PUSCH-AlphaSet#1.

[0138] As shown in Figure 17, SRI#set2 is used to indicate Rep#2, and the power control loop ID corresponding to Rep#2 is 0. In the CG configuration, the power control parameters associated with power control loop ID=0 are configured, so Rep#2 is transmitted using the power control parameters corresponding to power control loop ID=0 in the CG configuration, i.e., this PUSCH Rep#2 is transmitted according to the power control parameter p0-PUSCH-AlphaSet#3.

[0139] As shown in Figure 17, since Type 2 CG cannot indicate PL-RS by RRC signaling, Rep#1 and Rep#2 are transmitted according to DCI's instructions, i.e., according to PL-RS#1 and PL-RS#2, respectively.

[0140] In the example in Figure 18, all PUSCH retransmissions are sent using the power control parameters indicated by DCI (the third power control parameter mentioned above).

[0141] As shown in Figure 18, in this example, the configuration of the configuration grant, the PDCCH that schedules the retransmission of the PUSCH with the configuration grant, and the retransmission of the PUSCH with the configuration grant are the same as in Figure 17, and their explanation is omitted here.

[0142] As shown in Figure 18, SRI#set1 is used to indicate Rep#1, and the power control loop ID corresponding to Rep#1 is 1. In this example, the PUSCH retransmission is independent of the power control parameters configured in the CG configuration. That is, Rep#1 is transmitted using the power control parameters indicated by the scheduling DCI, i.e., PUSCH Rep#1 is transmitted according to the power control parameter p0-PUSCH-AlphaSet#1.

[0143] As shown in Figure 18, SRI#set2 is used to indicate Rep#2, and the power control loop ID corresponding to Rep#2 is 0. In this example, the PUSCH retransmission is independent of the power control parameters configured in the CG configuration. That is, Rep#2 is transmitted using the power control parameters indicated by the scheduling DCI, i.e., PUSCH Rep#2 is transmitted according to the power control parameter p0-PUSCH-AlphaSet#2.

[0144] As shown in Figure 18, since Type 2 CG cannot indicate PL-RS by RRC signaling, Rep#1 and Rep#2 are transmitted according to DCI's instructions, i.e., according to PL-RS#1 and PL-RS#2, respectively.

[0145] In the example in Figure 19, all PUSCH retransmissions are sent using the power control parameters of the CG configuration (the first power control parameters described above).

[0146] As shown in Figure 19, in this example, the configuration of the configuration grant, the PDCCH that schedules the retransmission of the PUSCH with the configuration grant, and the retransmission of the PUSCH with the configuration grant are the same as in Figure 17, and their explanation is omitted here.

[0147] As shown in Figure 19, SRI#set1 is used to indicate Rep#1, and accordingly, the power control loop ID corresponding to Rep#1 is 1. In this example, the PUSCH retransmission is sent according only to the power control parameters configured in the CG configuration, i.e., Rep#1 is sent using the power control parameters that schedule the CG configuration, i.e., this PUSCH Rep#1 is sent according to the power control parameter p0-PUSCH-AlphaSet#3.

[0148] As shown in Figure 19, SRI#set2 is used to indicate Rep#2, and accordingly, the power control loop ID corresponding to Rep#2 is 0. In this example, the PUSCH retransmission is sent according only to the power control parameters configured in the CG configuration, i.e., Rep#2 is sent using the power control parameters that schedule the CG configuration, i.e., this PUSCH Rep#2 is sent according to the power control parameter p0-PUSCH-AlphaSet#3.

[0149] As shown in Figure 19, since Type 2 CG cannot indicate PL-RS by RRC signaling, Rep#1 and Rep#2 are transmitted according to DCI's instructions, i.e., according to PL-RS#1 and PL-RS#2, respectively.

[0150] In the example in Figure 20, all PUSCH retransmissions are sent using the power control parameters indicated by DCI (the third power control parameter mentioned above).

[0151] As shown in Figure 20, the configuration of the configuration grant in this example is the same as in Figure 17, and its explanation is omitted here.

[0152] As shown in Figure 20, in this example, the CRC of the PDCCH that schedules the retransmission of the PUSCH with a scheduling configuration is scrambled by CS-RNTI, and the NDI field included in the DCI corresponding to the PDCCH is 1. This DCI corresponding to the PDCCH includes SRI#set1.

[0153] Here, the instructions for SRI#set1 are the same as in Figure 17, so we will omit their explanation here. Also, unlike the example in Figure 17, the DCI above does not have the instructions for SRI#set2.

[0154] As shown in Figure 20, in this example, to accommodate a single TRP transmission, the retransmission of PUSCH with a configuration grant is configured only partially. Here, SRI#set1 is used to indicate this PUSCH retransmission, and accordingly, the power control loop ID corresponding to this PUSCH retransmission is 1. In this example, since there is no configuration in the CG configuration where the power control loop ID is 1 (which is NULL), the retransmitted PUSCH is transmitted according to the power control parameters indicated by DCI, i.e., this PUSCH retransmission is transmitted according to the power control parameters p0-PUSCH-AlphaSet#1 and PL-RS#1.

[0155] In the example shown in Figure 21, all push retransmissions are sent using the power control parameters of the CG configuration (the first power control parameters described above).

[0156] As shown in Figure 21, the configuration of the configuration grant in this example is the same as in Figure 17, and its explanation is omitted here.

[0157] As shown in Figure 21, in this example, the CRC of the PDCCH that schedules the retransmission of the PUSCH with a configuration grant is scrambled by CS-RNTI, and the NDI field included in the DCI corresponding to the PDCCH is 1. This DCI corresponding to the PDCCH contains SRI#set1.

[0158] Here, the instructions for SRI#set1 are the same as in Figure 17, so we will omit their explanation here. Also, unlike the example in Figure 17, the DCI above does not have the instructions for SRI#set2.

[0159] As shown in Figure 21, in this example, to accommodate a single TRP transmission, the retransmission of PUSCH with a configuration grant is configured only partially. Here, SRI#set1 is used to indicate this PUSCH retransmission, and accordingly, the power control loop ID corresponding to this PUSCH retransmission is 1. In this example, the CG configuration does not have a configuration where the corresponding power control loop ID is 1 (which is NULL), but the PUSCH retransmission is still transmitted according to the power control parameters of the CG configuration, i.e., this PUSCH retransmission is transmitted according to the power control parameter p0-PUSCH-AlphaSet#3.

[0160] As shown in Figure 21, since Type 2 CG cannot indicate PL-RS by RRC signaling, this PUSCH retransmission is sent according to DCI instructions, i.e., according to PL-RS#1.

[0161] In the example in Figure 22, all PUSCH retransmissions are sent using the power control parameters of the CG configuration (the first power control parameters described above). Unlike the example in Figure 21, all PUSCH retransmissions are associated with the same closed-loop index as the CG configuration.

[0162] As shown in Figure 22, the configuration of the configuration grant in this example is the same as in Figure 17, and its explanation is omitted here.

[0163] As shown in Figure 22, in this example, the CRC of the PDCCH that schedules the retransmission of the PUSCH with a configuration grant is scrambled by CS-RNTI, and the NDI field included in the DCI corresponding to the PDCCH is 1. This DCI corresponding to the PDCCH includes SRI#set1.

[0164] Here, the instructions for SRI#set1 are the same as in Figure 17, so we will omit their explanation here. Also, unlike the example in Figure 17, the DCI above does not have the instructions for SRI#set2.

[0165] As shown in Figure 22, in this example, to accommodate a single TRP transmission, the retransmission of PUSCH with a configuration grant is only partially configured. Here, SRI#set1 is used to indicate this PUSCH retransmission, and accordingly, the power control loop ID corresponding to this PUSCH retransmission is 0. In this example, since the power control parameters associated with power control loop ID=0 are configured in the CG configuration, this PUSCH retransmission is transmitted using the power control parameters corresponding to power control loop ID=0 in the CG configuration, i.e., this PUSCH retransmission is transmitted according to the power control parameter p0-PUSCH-AlphaSet#3.

[0166] As shown in Figure 22, since Type 2 CG cannot indicate PL-RS by RRC signaling, this PUSCH retransmission is sent according to DCI instructions, i.e., according to PL-RS#1.

[0167] In the example in Figure 23, all PUSCH retransmissions are sent using the power control parameters of the CG configuration (the first power control parameters mentioned above) according to the closed-loop index.

[0168] As shown in Figure 23, in this example, the configuration of the configured grant is type 2 CG. This type 2 CG contains ConfiguredGrantConfig. ConfiguredGrantConfig has two power control parameter groups: one power control parameter group includes p0 and Alpha (p0-PUSCH-AlphaSet#3), and the ID of the power control loop corresponding to this power control parameter group is 0. The other power control parameter group includes p0 and Alpha (p0-PUSCH-AlphaSet#4), and the ID of the power control loop corresponding to this power control parameter group is 1.

[0169] As shown in Figure 23, in this example, the PDCCH that schedules the retransmission of PUSCH with configuration grants, and the retransmission of PUSCH with configuration grants, are the same as in Figure 17, and their explanation is omitted here.

[0170] As shown in Figure 23, SRI#set1 is used to indicate Rep#1, and accordingly, the power control loop ID corresponding to Rep#1 is 1. In this example, the PUSCH retransmission is sent according to the power control parameters configured in the CG configuration (where the power control loop ID is the same). That is, Rep#1 is sent using the power control parameters of the CG configuration corresponding to power control loop ID=1, and thus this PUSCH Rep#1 is sent according to the power control parameters p0-PUSCH-AlphaSet#4 and PL-RS#4.

[0171] As shown in Figure 23, SRI#set2 is used to indicate Rep#2, and accordingly, the power control loop ID corresponding to Rep#2 is 0. In this example, the PUSCH retransmission is sent according to the power control parameters configured in the CG configuration (where the power control loop ID is the same). That is, Rep#2 is sent using the power control parameters of the CG configuration corresponding to power control loop ID=0, i.e., this PUSCH Rep#2 is sent according to the power control parameter p0-PUSCH-AlphaSet#3.

[0172] As shown in Figure 23, since Type 2 CG cannot indicate PL-RS by RRC signaling, Rep#1 and Rep#2 are transmitted according to DCI's instructions, i.e., according to PL-RS#1 and PL-RS#2, respectively.

[0173] In the example in Figure 24, all PUSCH retransmissions are sent using the power control parameters indicated by DCI (the third power control parameter mentioned above).

[0174] As shown in Figure 24, in this example, the configuration of the configuration grant, the PDCCH that schedules the retransmission of the PUSCH with the configuration grant, and the retransmission of the PUSCH with the configuration grant are the same as in Figure 23, and their explanation is omitted here.

[0175] As shown in Figure 24, SRI#set1 is used to indicate Rep#1, and accordingly, the power control loop ID corresponding to Rep#1 is 1. In this example, the PUSCH retransmission (Rep#1) is transmitted according to the power control parameters indicated by DCI, i.e., according to the power control parameters p0-PUSCH-AlphaSet#1 and PL-RS#1.

[0176] As shown in Figure 24, SRI#set2 is used to indicate Rep#2, and accordingly, the power control loop ID corresponding to Rep#2 is 0. In this example, the PUSCH retransmission (Rep#2) is sent according to the power control parameters indicated by DCI, i.e., according to the power control parameters p0-PUSCH-AlphaSet#2 and PL-RS#2.

[0177] In the example in Figure 25, all PUSCH retransmissions are sent using the power control parameters of the CG configuration (the first power control parameters mentioned above) according to the closed-loop index.

[0178] As shown in Figure 25, in this example, the configuration of the configuration grant and the retransmission of the PUSCH with the configuration grant are the same as in Figure 23, and the PDCCH that schedules the retransmission of the configuration grant PUSCH is the same as in Figure 20, and its explanation is omitted here.

[0179] As shown in Figure 25, SRI#set1 is used to indicate a PUSCH retransmission, and its corresponding power control loop ID is 1. In this example, the PUSCH retransmission is sent according to the power control parameters of the CG configuration (where the power control loop ID is the same), i.e., according to the power control parameter p0-PUSCH-AlphaSet#4.

[0180] As shown in Figure 25, since Type 2 CG cannot indicate PL-RS by RRC signaling, this PUSCH retransmission is sent according to DCI instructions, i.e., according to PL-RS#1.

[0181] In the example in Figure 26, all PUSCH retransmissions are sent according to the power control parameters (the third power control parameter mentioned above) instructed by DCI.

[0182] As shown in Figure 26, in this example, the configuration of the configuration grant and the retransmission of the PUSCH with the configuration grant are the same as in Figure 23, and the PDCCH that schedules the retransmission of the PUSCH with the configuration grant is the same as in Figure 20, and its explanation is omitted here.

[0183] As shown in Figure 26, SRI#set1 is used to indicate a PUSCH retransmission, and its corresponding power control loop ID is 1. In this example, the PUSCH retransmission is sent according to the power control parameters indicated by DCI, i.e., according to the power control parameters p0-PUSCH-AlphaSet#1 and PL-RS#1.

[0184] According to the method of the embodiment of the present invention, the transmission problem of retransmission of uplink transmissions with configuration grants can be solved, and robustness can be improved by instructing the terminal device to retransmit the uplink transmission with configuration grants using a more reliable uplink transmission method if an uplink transmission with configuration grants fails once.

[0185] <Example 2> Embodiments of the present invention provide an uplink data transmission device, which may be, for example, a terminal device, or a component or element configured in a terminal device.

[0186] Figure 27 is a schematic diagram of an example of an uplink data transmission device according to an embodiment of the present invention. The principle of solving the problem of this device is similar to the method shown in Figure 5 of Embodiment 1, so its specific implementation may refer to the implementation of the method shown in Figure 5 of Embodiment 1, and the explanation of redundant content will be omitted.

[0187] As shown in Figure 27, the uplink data transmission device 2700 according to an embodiment of the present invention includes the following parts.

[0188] The receiving unit 2701 receives a PDCCH transmitted by the network device. The PDCCH instructs the terminal device to send a PUSCH retransmission, where the CRC corresponding to the PDCCH is scrambled by CS-RNTI, and the NDI field of the PDCCH is 1.

[0189] The transmitting unit 2702 transmits the PUSCH retransmission based on the first power control parameter of the CG configuration corresponding to the PUSCH retransmission.

[0190] In embodiments of the present invention, the first power control parameter includes at least one of P0, Alpha, Pathloss Reference Signal (PL-RS), and Close loop index.

[0191] In embodiments of the present invention, the first power control parameter correlates with at least one of the following: a power control instruction corresponding to the PDCCH, an SRS resource instruction corresponding to the PDCCH, and an SRS resource set configured for PUSCH transmission for the terminal device.

[0192] In some embodiments, the correlation of the first power control parameter with the power control instruction corresponding to the PDCCH means that the closed-loop index corresponding to the first power control parameter and the closed-loop index indicated by the PDCCH are the same.

[0193] In some embodiments, the correlation of the first power control parameter with an SRS resource instruction corresponding to the PDCCH means that the first power control parameter is determined by the SRS resource instruction, which includes a first SRS resource instruction and / or a second SRS resource instruction.

[0194] In some embodiments, the correlation of the first power control parameter with the SRS resource set configured for the PUSCH transmission for the terminal device means that the first power control parameter is determined by the number of SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device.

[0195] In some embodiments, the power control instruction corresponding to the PDCCH means an instruction by the PDCCH for at least one of the following power control parameters: P0, Alpha, Pathloss Reference Signal (PL-RS), and Close Loop Index.

[0196] In some embodiments, the power control instruction corresponding to the PDCCH means that the PDCCH indicates one or two groups of power control parameters, each group of power control parameters including at least one of P0, Alpha, Pathloss Reference Signal (PL-RS), and Close loop index.

[0197] In some embodiments, the SRS resource instruction corresponding to the PDCCH means an instruction by the PDCCH for a first SRS resource set and / or a second SRS resource set, where the first SRS resource set is used for PUSCH transmissions and the second SRS resource set is used for PUSCH transmissions.

[0198] In some embodiments, the SRS resource instruction corresponding to the PDCCH means a first SRS resource instruction and / or a second SRS resource instruction.

[0199] In some embodiments, the SRS resource set configured for the terminal device for a PUSCH transmission means one or two SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device.

[0200] In some embodiments, the transmitter 2702 transmits the PUSCH retransmission based on a second power control parameter, the second power control parameter being a parameter in UE-specific PUSCH configuration information.

[0201] In some embodiments, the second power control parameter includes at least one of P0, Alpha, a pathloss reference signal (PL-RS), and a closed loop index.

[0202] In some embodiments, the second power control parameter correlates with at least one of the following: a power control instruction corresponding to the PDCCH, an SRS resource instruction corresponding to the PDCCH, and a set of SRS resources configured for PUSCH transmission for the terminal device.

[0203] Figure 28 is a schematic diagram of another example of an uplink data transmission device according to an embodiment of the present invention. Since the principle of solving the problem of this device is similar to the method shown in Figure 6 of Embodiment 1, its specific implementation may refer to the implementation of the method shown in Figure 6 of Embodiment 1, and redundant explanations will be omitted.

[0204] As shown in Figure 28, the uplink data transmission device 2800 according to an embodiment of the present invention includes the following parts.

[0205] The receiving unit 2801 receives a PDCCH transmitted by the network device. The PDCCH instructs the terminal device to send a PUSCH retransmission, where the CRC corresponding to the PDCCH is scrambled by CS-RNTI, and the NDI field of the PDCCH is 1.

[0206] The transmitting unit 2802 transmits the PUSCH retransmission based on a third power control parameter. The third power control parameter refers to a parameter in the UE-specific PUSCH configuration information.

[0207] In embodiments of the present invention, the third power control parameter includes at least one of P0, Alpha, Pathloss Reference Signal (PL-RS), and Close loop index.

[0208] In embodiments of the present invention, the third power control parameter correlates with at least one element of a power control instruction corresponding to the PDCCH, an SRS resource instruction corresponding to the PDCCH, and an SRS resource set for PUSCH transmission configured for the terminal device.

[0209] In some embodiments, the correlation of the third power control parameter with the power control instruction corresponding to the PDCCH means that the closed-loop index corresponding to the third power control parameter and the closed-loop index indicated by the PDCCH are the same, and that the power control parameter corresponding to the closed-loop index is not configured in the configuration grant configuration (CG configuration) corresponding to the PUSCH retransmission.

[0210] In some embodiments, the correlation of the third power control parameter with an SRS resource instruction corresponding to the PDCCH means that the third power control parameter is determined by the SRS resource instruction, which includes a first SRS resource instruction and / or a second SRS resource instruction.

[0211] In some embodiments, the correlation of the third power control parameter with the SRS resource set configured for the PUSCH transmission for the terminal device means that the third power control parameter is determined by the number of SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device.

[0212] In some embodiments, the power control instruction corresponding to the PDCCH means an instruction by the PDCCH for at least one of the following power control parameters: P0, Alpha, Pathloss Reference Signal (PL-RS), and Close Loop Index.

[0213] In some embodiments, the power control instruction corresponding to the PDCCH means that the PDCCH indicates one or two groups of power control parameters, each group of power control parameters including at least one of P0, Alpha, Pathloss Reference Signal (PL-RS), and Close loop index.

[0214] In some embodiments, the SRS resource instruction corresponding to the PDCCH means an instruction by the PDCCH to a first SRS resource set and / or a second SRS resource set, the first SRS resource set being used for PUSCH transmissions and the second SRS resource set being used for PUSCH transmissions.

[0215] In some embodiments, the SRS resource instruction corresponding to the PDCCH means a first SRS resource instruction and / or a second SRS resource instruction.

[0216] In some embodiments, the SRS resource set configured for the terminal device for a PUSCH transmission means one or two SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device.

[0217] Although the above has described only the components or modules related to the present invention, the present invention is not limited to these. The uplink data transmission device 2700 / 2800 of the embodiment of the present invention may include other components or modules, and the specific details of these components or modules may be referenced from related technologies.

[0218] Furthermore, for the sake of clarity, Figures 27 and 28 only show illustrative examples of the connections or signal flows between the respective components or modules; however, those skilled in the art may employ various related techniques, such as bus connections. The various components or modules described above may be implemented by hardware devices such as processors, memory, transmitters, and receivers, but the implementation of the present invention is not limited to these.

[0219] According to the apparatus of the embodiment of the present invention, the transmission problem of retransmission of uplink transmissions with configuration grants can be solved, and if an uplink transmission with a configuration grant fails once, the network device can improve robustness by instructing the terminal device to retransmit the uplink transmission with a configuration grant using a more reliable uplink transmission method.

[0220] <Example 3> Embodiments of the present invention provide a communication system. Figure 29 is a schematic diagram of a communication system according to an embodiment of the present invention. As shown in Figure 29, the communication system 2900 includes a network device 2901 and a terminal device 2902. For the sake of explanation, Figure 29 illustrates only one terminal device and one network device as an example, but embodiments of the present invention are not limited thereto.

[0221] In embodiments of the present invention, existing services or services that can be implemented in the future can be transmitted between the network device 2901 and the terminal device 2902. For example, these services include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), ultra-reliable low-latency communications (URLLC), and vehicle-to-vehicle / vehicle-to-infrastructure (V2X) communications.

[0222] In some embodiments, network device 2901 generates a PDCCH and transmits the PDCCH to terminal device 2902. Terminal device 2902 receives the PDCCH transmitted by network device 2901. The PDCCH instructs the terminal device to transmit a PUSCH retransmission, where the CRC corresponding to the PDCCH is scrambled by CS-RNTI and the NDI field of the PDCCH is 1. Terminal device 2902 transmits the PUSCH retransmission based on a first power control parameter of the CG configuration corresponding to the PUSCH retransmission. The first power control parameter includes at least one of P0, Alpha, Pathloss Reference Signal (PL-RS), and Close loop index. The first power control parameter correlates with at least one of the following elements: a power control instruction corresponding to the PDCCH, an SRS resource instruction corresponding to the PDCCH, and an SRS resource set configured for PUSCH transmission for the terminal device. The present invention is not limited to the network device 2901. The description of the terminal device 2902 is the same as that shown in Figure 5 of Example 1, and is therefore omitted here.

[0223] In some embodiments, network device 2901 generates a PDCCH and transmits the PDCCH to terminal device 2902. Terminal device 2902 receives the PDCCH transmitted by network device 2901. The PDCCH instructs the terminal device to transmit a PUSCH retransmission, where the CRC corresponding to the PDCCH is scrambled by CS-RNTI and the NDI field of the PDCCH is 1. Terminal device 2902 transmits the PUSCH retransmission based on a third power control parameter, which means a parameter in UE-specific PUSCH configuration information, and which includes at least one of P0, Alpha, Pathloss Reference Signal (PL-RS), and Close loop index. The third power control parameter correlates with at least one of the following elements: a power control instruction corresponding to the PDCCH, an SRS resource instruction corresponding to the PDCCH, and an SRS resource set configured for PUSCH transmission for the terminal device. The details relating to the network device 2901 are not limiting to the present invention. The details relating to the terminal device 2902 are the same as those in Figure 6 of Example 1, and therefore their description is omitted here.

[0224] Furthermore, embodiments of the present invention provide a terminal device, which may be, for example, a UE, but the present invention is not limited thereto and may be other devices.

[0225] Figure 30 is a schematic diagram showing a terminal device according to an embodiment of the present invention. As shown in Figure 30, the terminal device 3000 may include a processor 3001 and a memory 3002. Data and programs are stored in the memory 3002 and it is connected to the processor 3001. Note that this figure is illustrative, and this structure may be supplemented or replaced with other types of structures to realize communication functions or other functions.

[0226] For example, the processor 3001 may be configured to execute a program to implement the uplink data transmission method described in Example 1.

[0227] As shown in Figure 30, the terminal device 3000 may further include a communication module 3003, an input unit 3004, a display 3005, and a power supply 3006. Here, the functions of each of the above parts are the same as in the prior art, and their explanation is omitted here. Note that the terminal device 3000 does not need to include all the units shown in Figure 30. Furthermore, the terminal device 3000 may further include units not shown in Figure 30, and prior art may be referenced.

[0228] In embodiments of the present invention, a computer-readable program is further provided, which, when executed in a terminal device, causes the computer to execute the method described in Embodiment 1 above in the terminal device.

[0229] Embodiments of the present invention further provide a storage medium that stores a computer-readable program, and which, when executing the program, causes a computer to execute the method described in Embodiment 1 on a terminal device.

[0230] The above-described apparatus and method of the present invention may be implemented by hardware, or by combining hardware and software. The present invention relates to a computer-readable program, and when the program is executed by a logic unit, the logic unit may implement the above-described apparatus or configuration requirements, or the logic unit may implement the above-described methods or steps. The logic unit is, for example, a field-programmable logic unit, a microprocessor, or a processor used in a computer. The present invention relates to a storage medium for storing the above-described program, such as a hard disk, magnetic disk, optical disk, DVD, flash memory, etc.

[0231] Each processing method in each apparatus described with reference to embodiments of the present invention may be implemented using hardware, software modules executed by a processor, or a combination of both. For example, one or more functional block diagrams shown in the drawings, or one or more combinations of functional block diagrams, may correspond to each software module in a computer program flow, or to each hardware module. These software modules may correspond to each step shown in the drawings. These hardware modules may be implemented by hardwareizing these software modules, for example, using a field-programmable gate array (FPGA).

[0232] The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, mobile hard disk, CD-ROM, or any other form of storage medium known to those skilled in the art. The storage medium may be connected to the processor so that the processor can read information from or write information to the storage medium, or the storage medium may be a component of the processor. The processor and the storage medium may reside in an ASIC. The software module may be stored in the memory of the mobile terminal or on a memory card inserted into the mobile terminal. For example, if the device (e.g., a mobile terminal) uses a relatively large capacity MEGA-SIM card or a high-capacity flash memory device, the software module may be stored on the MEGA-SIM card or high-capacity flash memory device.

[0233] One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams shown in the drawings may be implemented by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic unit, a discrete hardware component, or any suitable combination thereof for performing the functions described herein. One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams shown in the drawings may be implemented, for example, by a combination of computing equipment, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors combined with DSP communication, or any other configuration.

[0234] Although the present invention has been described above with reference to specific embodiments, the above description is merely illustrative and does not limit the scope of protection of the present invention. Various modifications and changes can be made to the present invention as long as they do not deviate from the spirit and principles of the present invention, and these modifications and changes are also within the scope of the present invention.

[0235] Furthermore, the following additional information is disclosed regarding embodiments including the above-described examples. (Note 1) A method for transmitting uplink data, A step in which a terminal device receives a PDCCH transmitted by a network device, wherein the PDCCH instructs the terminal device to transmit a PUSCH retransmission, the CRC corresponding to the PDCCH is scrambled by CS-RNTI, and the NDI field of the PDCCH is 1. The step includes the terminal device transmitting the PUSCH retransmission based on a first power control parameter of a configuration grant (CG configuration) corresponding to the PUSCH retransmission, The first power control parameter is: P0, Alpha, Pathloss Reference Signal (PL-RS), and It includes at least one of the closed-loop indices, The first power control parameter is: Power control instruction corresponding to the PDCCH, SRS resource instruction corresponding to the PDCCH, and A method for correlating with at least one element of an SRS resource set for PUSCH transmission configured for the terminal device. (Note 2) The method according to Appendix 1, wherein the correlation of the first power control parameter with the power control instruction corresponding to the PDCCH means that the closed-loop index corresponding to the first power control parameter and the closed-loop index indicated by the PDCCH are the same. (Note 3) The method according to Appendix 1, wherein the first power control parameter correlates with the SRS resource instruction corresponding to the PDCCH, meaning that the first power control parameter is determined by the SRS resource instruction, and the SRS resource instruction includes a first SRS resource instruction and / or a second SRS resource instruction. (Note 4) The method according to Appendix 1, wherein the first power control parameter correlates with the SRS resource set configured for PUSCH transmission for the terminal device, meaning that the first power control parameter is determined by the number of SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device. (Note 5) The power control instruction corresponding to the PDCCH is performed by the PDCCH P0, Alpha, Pathloss Reference Signal (PL-RS), and The method described in Appendix 1, which means an instruction for at least one power control parameter of the closed-loop index. (Note 6) The power control instruction corresponding to the PDCCH means that the PDCCH instructs one group or two groups of power control parameters, and the power control parameters for each group are: P0, Alpha, Pathloss Reference Signal (PL-RS), and The method described in Appendix 1, comprising at least one of the closed-loop indices. (Note 7) The SRS resource instruction corresponding to the PDCCH means an instruction by the PDCCH for a first SRS resource set and / or a second SRS resource set. The first SRS resource set is used for PUSCH transmission. The second SRS resource set described above is used for PUSCH transmission, as described in Appendix 1. (Note 8) The method described in Appendix 1, wherein the SRS resource instruction corresponding to the PDCCH means the first SRS resource instruction and / or the second SRS resource instruction. (Note 9) The method according to Appendix 1, wherein the SRS resource set configured for the terminal device for PUSCH transmission means one or two SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device. (Note 10) The terminal device transmits the PUSCH retransmission based on a second power control parameter, where the second power control parameter refers to a parameter in UE-specific PUSCH configuration information, and the second power control parameter is P0, Alpha, Pathloss Reference Signal (PL-RS), and It includes at least one of the closed-loop indices, The second power control parameter is: Power control instruction corresponding to the PDCCH, SRS resource instruction corresponding to the PDCCH, and The method according to Appendix 1, which correlates with at least one element of an SRS resource set for PUSCH transmission configured for the terminal device. (Note 11) A method for transmitting uplink data, A step in which a terminal device receives a PDCCH transmitted by a network device, wherein the PDCCH instructs the terminal device to transmit a PUSCH retransmission, the CRC corresponding to the PDCCH is scrambled by CS-RNTI, and the NDI field of the PDCCH is 1. The terminal device transmits the PUSCH retransmission based on a third power control parameter, The third power control parameter refers to a parameter in the UE-specific PUSCH configuration information, and the third power control parameter is P0, Alpha, Pathloss Reference Signal (PL-RS), and It includes at least one of the closed-loop indices, The third power control parameter is: Power control instruction corresponding to the PDCCH, SRS resource instruction corresponding to the PDCCH, and A method for correlating with at least one element of an SRS resource set for PUSCH transmission configured for the terminal device. (Note 12) The method according to Appendix 11, wherein the correlation of the third power control parameter with the power control instruction corresponding to the PDCCH means that the closed-loop index corresponding to the third power control parameter and the closed-loop index instructed by the PDCCH are the same, and the power control parameter corresponding to the closed-loop index is not configured in the configuration grant configuration (CG configuration) corresponding to the PUSCH retransmission. (Note 13) The method according to Appendix 11, wherein the third power control parameter correlates with the SRS resource instruction corresponding to the PDCCH, meaning that the third power control parameter is determined by the SRS resource instruction, the SRS resource instruction includes a first SRS resource instruction and / or a second SRS resource instruction. (Note 14) The method according to Appendix 11, wherein the third power control parameter correlates with the SRS resource set configured for PUSCH transmission for the terminal device, meaning that the third power control parameter is determined by the number of SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device. (Note 15) The power control instruction corresponding to the PDCCH is performed by the PDCCH P0, Alpha, Pathloss Reference Signal (PL-RS), and The method described in Appendix 11, which means an instruction for at least one power control parameter of the closed-loop index. (Note 16) The power control instruction corresponding to the PDCCH means that the PDCCH instructs one group or two groups of power control parameters, and the power control parameters for each group are: P0, Alpha, Pathloss Reference Signal (PL-RS), and The method described in Appendix 11, comprising at least one of the closed-loop indices. (Note 17) The SRS resource instruction corresponding to the PDCCH means an instruction by the PDCCH for a first SRS resource set and / or a second SRS resource set. The first SRS resource set is used for PUSCH transmission. The second SRS resource set described above is used for PUSCH transmission, as described in Appendix 11. (Note 18) The method described in Appendix 11, wherein the SRS resource instruction corresponding to the PDCCH means the first SRS resource instruction and / or the second SRS resource instruction. (Note 19) The method according to Appendix 11, wherein the SRS resource set configured for the terminal device for PUSCH transmission means one or two SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device. (Note 20) A terminal device comprising a memory storing a computer program and a processor, wherein the processor is configured to execute the computer program and implement the method described in any of the appendices 1 to 19. (Note 21) A communication system including terminal equipment and network equipment, The aforementioned terminal device is The network device receives a PDCCH that instructs the terminal device to send a PUSCH retransmission, the CRC corresponding to the PDCCH is scrambled by CS-RNTI, and the NDI field of the PDCCH is 1. configured to transmit the PUSCH retransmission based on a first power control parameter of a configured grant configuration (CG configuration) corresponding to the PUSCH retransmission, the first power control parameter includes P0, Alpha, a pathloss reference signal (PL-RS), and at least one of a close loop index, the first power control parameter is a power control instruction corresponding to the PDCCH, an SRS resource instruction corresponding to the PDCCH, and correlates with at least one element of an SRS resource set for PUSCH transmission configured for the terminal device, The network device is configured to transmit the PDCCH to the terminal device and receive the PUSCH retransmission transmitted by the terminal device, a communication system. (Appendix 22) A communication system including a terminal device and a network device, the terminal device is configured to receive a PDCCH transmitted by a network device, the PDCCH instructs the terminal device to transmit a PUSCH retransmission (PUSCH retransmission), a CRC corresponding to the PDCCH is scrambled by a CS-RNTI, and an NDI field of the PDCCH is 1, configured to transmit the PUSCH retransmission based on a third power control parameter, the third power control parameter means a parameter in UE specific PUSCH configuration information, the third power control parameter is P0, Alpha, a pathloss reference signal (PL-RS), and including at least one of a closed loop index, where the third power control parameter is, a power control instruction corresponding to the PDCCH, a SRS resource instruction corresponding to the PDCCH, and correlating to at least one element of a SRS resource set for PUSCH transmission configured for the terminal device, a communication system, wherein the network device is configured to transmit the PDCCH to the terminal device and receive the PUSCH retransmission transmitted by the terminal device.

Claims

1. An uplink data transmission device configured in a terminal device, A receiving unit that receives a PDCCH transmitted by a network device, wherein the PDCCH instructs the terminal device to transmit a PDCCH retransmission, the CRC corresponding to the PDCCH is scrambled by CS-RNTI, and the NDI field of the PDCCH is 1. The system includes a transmitting unit that transmits the PUSCH retransmission based on a first power control parameter of a configuration grant configuration (CG configuration) corresponding to the PUSCH retransmission, The first power control parameter is, P0, Alpha, Path loss reference signal (PL-RS), and It includes at least one of the closed-loop indices, The first power control parameter is, Power control instruction corresponding to the PDCCH, and Correlating to at least one element of the SRS resource set for PUSCH transmission configured for the terminal device, The SRS resource set configured for the terminal device for PUSCH transmission means one or two SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device.

2. The apparatus according to claim 1, wherein the correlation of the first power control parameter with the power control instruction corresponding to the PDCCH means that the closed-loop index corresponding to the first power control parameter and the closed-loop index instructed by the PDCCH are the same.

3. The apparatus according to claim 1, wherein the first power control parameter correlates with the SRS resource set configured for PUSCH transmission for the terminal device, meaning that the first power control parameter is determined by the number of SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device.

4. The power control instruction corresponding to the PDCCH is performed by the PDCCH P0, Alpha, Path loss reference signal (PL-RS), and The apparatus according to claim 1, which means an instruction for at least one power control parameter of the closed-loop index.

5. The power control instruction corresponding to the PDCCH means that the PDCCH instructs one group or two groups of power control parameters, and the power control parameters for each group are: P0, Alpha, Path loss reference signal (PL-RS), and The apparatus according to claim 1, comprising at least one of the closed-loop indices.

6. An uplink data transmission device configured in a terminal device, A receiving unit that receives a PDCCH transmitted by a network device, wherein the PDCCH instructs the terminal device to transmit a PDCCH retransmission, the CRC corresponding to the PDCCH is scrambled by CS-RNTI, and the NDI field of the PDCCH is 1. A transmitting unit that transmits the PUSCH retransmission based on a third power control parameter, The third power control parameter refers to a parameter in the UE specific PUSCH configuration information, and the third power control parameter is P0, Alpha, Path loss reference signal (PL-RS), and It includes at least one of the closed-loop indices, The third power control parameter is: Power control instruction corresponding to the PDCCH, SRS resource instruction corresponding to the PDCCH, and A device that correlates to at least one element of an SRS resource set for PUSCH transmission configured for the terminal device.

7. The apparatus according to claim 6, wherein the correlation of the third power control parameter with the power control instruction corresponding to the PDCCH means that the closed-loop index corresponding to the third power control parameter and the closed-loop index instructed by the PDCCH are the same, and the power control parameter corresponding to the closed-loop index is not configured in the configuration grant configuration (CG configuration) corresponding to the PUSCH retransmission.

8. The apparatus according to claim 6, wherein the third power control parameter correlates with an SRS resource instruction corresponding to the PDCCH, meaning that the third power control parameter is determined by the SRS resource instruction, and the SRS resource instruction includes a first SRS resource instruction and / or a second SRS resource instruction.

9. The apparatus according to claim 6, wherein the third power control parameter correlates with the SRS resource set configured for PUSCH transmission for the terminal device, meaning that the third power control parameter is determined by the number of SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device.

10. The power control instruction corresponding to the PDCCH is performed by the PDCCH P0, Alpha, Path loss reference signal (PL-RS), and The apparatus according to claim 6, which means an instruction for at least one power control parameter of the closed-loop index.

11. The power control instruction corresponding to the PDCCH means that the PDCCH instructs one group or two groups of power control parameters, and the power control parameters for each group are: P0, Alpha, Path loss reference signal (PL-RS), and The apparatus according to claim 6, comprising at least one of the closed-loop indices.

12. The SRS resource instruction corresponding to the PDCCH means an instruction by the PDCCH for a first SRS resource set and / or a second SRS resource set. The first SRS resource set is used for PUSCH transmission. The apparatus according to claim 6, wherein the second SRS resource set is used for PUSCH transmission.

13. The apparatus according to claim 6, wherein the SRS resource instruction corresponding to the PDCCH means a first SRS resource instruction and / or a second SRS resource instruction.

14. The apparatus according to claim 6, wherein the SRS resource set configured for the terminal device for PUSCH transmission means one or two SRS resource sets configured in the active BWP corresponding to the PUSCH retransmission transmitted by the terminal device.

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