Repeated transmission method and device

Abstract

The invention discloses a repeated transmission method and device, and belongs to the technical field of communication, and the repeated transmission method comprises the steps that a terminal determines a frequency domain unit where each time of repeated transmission in at least two times of repeated transmission of first transmission is located; and the terminal performs transmission on the frequency domain unit where at least one repeated transmission in the at least two repeated transmissions is located based on a repeated transmission mode.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a retransmission method and apparatus. Background Art

[0002] In related technologies, uplink and downlink transmissions are restricted within a partial bandwidth (Bandwidth Part, BWP) of a cell, and the BWP is a continuous segment of frequency-domain resources. To increase the reliability and robustness of uplink transmissions and improve uplink transmission performance, the Physical Uplink Control Channel (PUCCH) / Physical Uplink Shared Channel (PUSCH) / Sounding Reference Signal (SRS) transmissions support multiple retransmissions, that is, the uplink transmission is configured or indicated for 2 or at least two retransmissions, and each retransmission is within the same BWP. At the same time, to obtain frequency diversity gain and anti-interference effects, the uplink transmission can also be transmitted at different frequency-domain positions within a BWP during retransmission (also known as frequency hopping transmission).

[0003] However, when a cell contains one or more discontinuous frequency-domain resources, there is a lack of corresponding solutions if uplink and downlink channels or signals are to be retransmitted. Therefore, how to implement retransmission of uplink and downlink channels or signals is an urgent problem to be solved. Summary of the Invention

[0004] Embodiments of this application provide a retransmission method and apparatus, which can solve the problem of how to implement retransmission of uplink and downlink channels or signals when a cell contains one or more discontinuous frequency-domain resources.

[0005] In a first aspect, a retransmission method is provided, which is executed by a terminal. The method includes:

[0006] The terminal determines the frequency-domain unit where each retransmission of at least two retransmissions of the first transmission is located;

[0007] The terminal performs transmission on the frequency-domain unit where at least one retransmission of the at least two retransmissions is located based on the retransmission mode.

[0008] In a second aspect, a retransmission apparatus is provided, including:

[0009] A first determination module, configured to determine, for the terminal, the frequency-domain unit where each retransmission of at least two retransmissions of the first transmission is located;

[0010] The first transmission module is used for the terminal to perform transmission on the frequency domain units where at least one of the at least two repeated transmissions is located based on the repeated transmission mode.

[0011] In a third aspect, a terminal is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0012] In a fourth aspect, a terminal is provided, including a processor and a communication interface. The processor is used to determine the frequency domain units where each of the at least two repeated transmissions of the first transmission is located, and the communication interface is used to perform transmission on the frequency domain units where at least one of the at least two repeated transmissions is located based on the repeated transmission mode.

[0013] In a fifth aspect, a readable storage medium is provided. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0014] In a sixth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect.

[0015] In a seventh aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the repeated transmission method described in the first aspect.

[0016] In the embodiments of the present application, by the terminal determining the frequency domain units where each of the at least two repeated transmissions of the first transmission is located; and the terminal performing transmission on the frequency domain units where at least one of the at least two repeated transmissions is located based on the repeated transmission mode, the first transmission is repeated on different frequency domain units, that is, on one or more discontinuous frequency domain resources, so as to obtain a larger frequency diversity gain or increase the anti-interference ability of the uplink transmission, reduce the transmission delay of the first transmission, and improve the performance of the communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0018] Figure 2 is a schematic diagram of a base station provided by the prior art to achieve bandwidth change by activating different BWPs for a UE;

[0019] Figure 3It is a schematic flowchart of the retransmission method provided by an embodiment of the present application;

[0020] Figure 4 It is a schematic diagram of different retransmissions at the same frequency domain position provided by an embodiment of the present application;

[0021] Figure 5 It is a schematic diagram of different retransmissions at different frequency domain positions within the same frequency domain unit provided by an embodiment of the present application;

[0022] Figure 6 It is a schematic diagram of different retransmissions corresponding to different frequency domain units at different time positions provided by an embodiment of the present application;

[0023] Figure 7 It is a schematic diagram of different retransmissions in different frequency domain units at the same time position provided by an embodiment of the present application;

[0024] Figure 8 It is a schematic diagram of time-frequency domain retransmission provided by an embodiment of the present application;

[0025] Figure 9 It is one of the schematic diagrams of the frequency domain unit index where each retransmission of PUCCH transmission provided by an embodiment of the present application is located;

[0026] Figure 10 It is the second of the schematic diagrams of the frequency domain unit index where each retransmission of PUCCH transmission provided by an embodiment of the present application is located;

[0027] Figure 11 It is the third of the schematic diagrams of the frequency domain unit index where each retransmission of PUCCH transmission provided by an embodiment of the present application is located;

[0028] Figure 12 It is the fourth of the schematic diagrams of the frequency domain unit index where each retransmission of PUCCH transmission provided by an embodiment of the present application is located;

[0029] Figure 13 It is the fifth of the schematic diagrams of the frequency domain unit index where each retransmission of PUCCH transmission provided by an embodiment of the present application is located;

[0030] Figure 14 It is the sixth of the schematic diagrams of the frequency domain unit index where each retransmission of PUCCH transmission provided by an embodiment of the present application is located;

[0031] Figure 15 It is the seventh of the schematic diagrams of the frequency domain unit index where each retransmission of PUCCH transmission provided by an embodiment of the present application is located;

[0032] Figure 16It is the eighth schematic diagram of the frequency domain unit index where each repeated transmission of PUCCH transmission provided by the embodiment of the present application is located;

[0033] Figure 17 It is the ninth schematic diagram of the frequency domain unit index where each repeated transmission of PUCCH transmission provided by the embodiment of the present application is located;

[0034] Figure 18 It is the ninth schematic diagram of the frequency domain unit index where each repeated transmission of PUCCH transmission provided by the embodiment of the present application is located;

[0035] Figure 19 It is the structural schematic diagram of the repeated transmission device provided by the embodiment of the present application;

[0036] Figure 20 It is the structural schematic diagram of the terminal provided by the embodiment of the present application. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, rather than all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0038] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are usually of the same category, and the number of objects is not limited. For example, the first object can be one time, or at least two times. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0039] The term "indication" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the receiver of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0040] It should be noted that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6 th Generation, 6G) communication system.

[0041] Figure 1It is a block diagram of a wireless communication system to which the embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), a game console, a personal computer (PC), a teller machine or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc.Among them, the base station may be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or other suitable terms in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0042] The core network device may include, but is not limited to, at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0043] To facilitate a clearer understanding of the embodiments of this application, some relevant background technical knowledge is introduced as follows.

[0044] Mobile communication systems need to adapt to more diverse scenarios and service requirements. For example, the main scenarios of 5G include Enhanced Mobile Broadband (eMBB), Ultra-Reliable and Low Latency Communications (URLLC), and Massive Machine Type Communications (mMTC). These scenarios pose requirements such as high reliability, low latency, large bandwidth, and wide coverage on the system. For different application scenarios, the transmission bandwidth required by the terminal is different. In NR, the base station can schedule the terminal to transmit on different bandwidth parts according to the demand.

[0045] In NR, the network configures one or more Bandwidth Parts (BWPs) for the User Equipment (UE) to perform data transmission. A BWP is a continuous segment of resources in the frequency domain, and the base station realizes dynamic bandwidth change by activating different BWPs for the UE. Figure 2 Figure showing how the base station in the prior art realizes bandwidth change by activating different BWPs for the UE, as Figure 2 shown. At the first moment, the traffic volume of the UE is large, and the base station activates a large bandwidth (BWP1) for the UE; at the second moment, the traffic volume of the UE is small, and the base station activates a small bandwidth (BWP2) for the UE to meet the basic communication requirements; at the third moment, the system discovers that there is a large-scale frequency selective fading within the bandwidth where BWP1 is located, or the resources within the frequency range where BWP2 is located are relatively scarce, so it instructs the UE to activate a new bandwidth (BWP3).

[0046] Each BWP can correspond to different configuration parameters. For example, it includes subcarrier spacing, the position and bandwidth of the BWP, Cyclic Prefix (CP), etc.

[0047] The Sub-3GHz spectrum has advantages such as low penetration loss and plays an important role in cellular network deployment due to its good coverage. On the one hand, compared with the C-band, the Sub-3GHz spectrum is fragmented and allocated to International Mobile Telecommunications (IMT), and due to competition among mobile operators, the bandwidth of each spectrum block is relatively narrow. On the other hand, almost all operators globally have multiple Sub-3GHz bands (such as 700MHz, 800MHz, 900MHz, 1.4GHz, 1.8GHz, 2.1GHz, 2.3GHz, or 2.6GHz bands). If these discontinuous spectrums can be effectively aggregated to form a "single" carrier with a relatively large bandwidth, all operators can benefit.

[0048] I. PUCCH Resource Configuration

[0049] In NR R15, when performing Carrier Aggregation (CA) in the uplink, up to two Physical Uplink Control Channel (PUCCH) groups (primary PUCCH group and secondary PUCCH group) can be configured, and the PUCCH configuration and transmission within each PUCCH group are carried out separately. Within a PUCCH group, PUCCH resources can only be configured and transmitted on the Primary Cell (Pcell) or the PUCCH-switched Secondary Cell (PUCCH-sSCell). In Rel-15, the base station can configure UE-specific PUCCH resources for each UE through Radio Resource Control (RRC) signaling, where the UE-specific PUCCH resources are configured on each Bandwidth Part (BWP) through the Information element (IE) PUCCH-Config. That is, each PUCCH resource is within one BWP.

[0050] II. NR UL Transmission with Repetition

[0051] In the NR system, to improve the transmission reliability and increase the cell coverage, the uplink PUCCH or PUSCH, and the downlink PDCCH or PDSCH transmissions all support repetition. Among them, the UE repeats the transmission of the same channel or signal in the same frequency-domain resource at different times or in different frequency-domain resources of the same BWP, or if the uplink PUCCH / PUSCH is configured for repetition transmission, when the UE repeats the transmission at different times, it can perform frequency-hopping transmission of the PUCCH or PUSCH on different frequency-domain resources of a BWP to obtain frequency-domain diversity gain and anti-interference effect.

[0052] In the prior art, the carrier of each cell is a continuous frequency-domain resource, and the transmission resources are restricted within a BWP on a cell. The spectral resources of each BWP bandwidth are continuous, and the maximum bandwidth can be 100 MHz. For fragmented spectra, such as a large number of fragmented spectra in the Sub-3 GHz spectrum, if following the prior art, to use the fragmented spectra, carrier aggregation (CA) is the traditional solution for operators and terminals to aggregate spectra, that is, different continuous spectra are used as a carrier respectively. However, the existing CA mechanism treats each carrier as an independent serving cell and assumes that each carrier is independently deployed. The independent management of each carrier will bring unnecessary overhead and efficiency loss (such as independent control signaling, common signaling, etc.), which also brings unnecessary processes and delays (such as synchronization, SCell addition / release / activation / measurement / mobility, etc.). In addition, the CA mechanism is only beneficial to UEs in the connected mode RRC_connected, that is, UEs that have completed the RRC connection with the network, and is not beneficial to UEs in the idle mode / non-active mode RRC_idle / inactive (such as initial access / small data transmission (Small Data Transmission, SDT)).

[0053] Therefore, introducing flexible cells can flexibly and efficiently utilize adjacent discontinuous spectra from the perspectives of L1 / L2 / L3 signaling, processes, and cell management. It is beneficial to UEs in both the CONNECTED state and the IDLE state, thereby improving the user-perceived data rate, energy saving, system capacity, and coverage. It also simplifies the network management complexity and improves the energy efficiency. In addition, these narrow-bandwidth carriers cannot provide or provide limited frequency diversity gain.

[0054] The following will, in conjunction with the accompanying drawings, elaborate on the repetition transmission method provided by the embodiments of the present application through some embodiments and their application scenarios.

[0055] The repeated transmission method provided by the embodiment of the present application can be applied to the scenario of repeated transmission between frequency domain units in uplink transmission or downlink transmission. The terminal determines the frequency domain unit where each of at least two repeated transmissions of the first transmission is located; based on the repeated transmission mode, the terminal performs transmission on the frequency domain unit where at least one of the at least two repeated transmissions is located, so as to realize the repeated transmission of the first transmission on different frequency domain units, that is, on one or more discontinuous frequency domain resources, thereby being able to obtain a larger frequency diversity gain or increase the anti-interference ability of uplink transmission, reduce the transmission delay of the first transmission, and improve the performance of the communication system.

[0056] Figure 3 is a schematic flowchart of the repeated transmission method provided by the embodiment of the present application. As Figure 3 shown, the method includes step 301-step 302; where:

[0057] Step 301, the terminal determines the frequency domain unit where each of at least two repeated transmissions of the first transmission is located.

[0058] It should be noted that the embodiment of the present application can be applied to the scenario of repeated transmission between frequency domain units in uplink transmission or downlink transmission. The terminal includes, but is not limited to, the types of the above-listed terminal 11, and the network-side device includes, but is not limited to, the types of the above-listed network-side device 12. The embodiment of the present application does not limit this.

[0059] Specifically, a cell is composed of at least one frequency domain unit, and the frequency domain units may be discontinuous. A frequency domain unit is a group of continuous frequency domain resources. The frequency domain unit may be a bandwidth (band), a carrier, a subband, a BWP, etc., and the bandwidth size of each frequency domain unit may be different. For example, a cell is composed of four frequency domain units, and the sizes of these four frequency domain units are 3MHz, 10MHz, 5MHz, and 5MHz respectively. The first transmission may be an uplink transmission or a downlink transmission. For the first transmission, when repeated transmission is configured or indicated, different repeated transmissions of the first transmission may be transmitted within different frequency domain units. The frequency domain unit may be identified by a frequency domain unit index (such as index / ID). If the frequency domain unit corresponds to a band, the frequency domain unit may also be identified by a band number. For simplicity, in the present application, it is identified by a frequency domain unit index. The method in the present application can also be applied to the case where the frequency domain unit is identified by a band number.

[0060] Step 302, the terminal performs transmission on the frequency domain unit where at least one of the at least two repeated transmissions is located based on the repeated transmission mode.

[0061] Optionally, the terminal receives high-layer signaling or dynamic signaling, where the high-layer signaling is used to configure the retransmission mode, and the dynamic signaling is used to indicate the retransmission mode.

[0062] Specifically, the base station sends high-layer signaling, such as RRC information, to the terminal, and the high-layer signaling is used to configure the retransmission mode. The terminal can receive the high-layer signaling sent by the base station. Alternatively, the base station sends dynamic signaling, such as DCI, to the terminal, and the dynamic signaling is used to indicate the retransmission mode. The terminal can receive the dynamic signaling sent by the base station. Among them, the high-layer signaling configuring the retransmission mode or the dynamic signaling being used to indicate the retransmission mode can be that the base station enables the terminal to perform retransmission through high-layer signaling or dynamic signaling, or which retransmission mode the base station indicates the terminal to use when performing retransmission through high-layer signaling or dynamic signaling. Among them, the base station can flexibly configure the retransmission mode of the terminal according to the terminal capabilities, actual configuration / scheduling situation, service requirements, etc.

[0063] After receiving the indication information of the retransmission mode, the terminal can perform transmission on the frequency domain unit where at least one retransmission among the determined at least two retransmissions is located based on the configured retransmission mode.

[0064] Optionally, the terminal can also determine the retransmission mode based on protocol predefinitions or predefined rules, and perform transmission on the frequency domain unit where at least one retransmission among the determined at least two retransmissions is located. Among them, the time unit can be a slot or sub-slot, symbol, symbol set, subframe, or frame, etc.

[0065] It should be noted that in the case where the frequency domain unit where any repeated transmission is located is unavailable (for example, the frequency domain unit is deactivated or in an inactive state, or the frequency domain bandwidth of the first transmission exceeds the frequency range of the frequency domain unit, or for any symbol of the first transmission, the transmission direction of the first transmission does not match the transmission direction configured or indicated for the frequency domain unit. For example, the first transmission is an uplink transmission, and the symbol position corresponding to the frequency domain unit is configured or indicated as a downlink transmission (DL) symbol), the terminal may not perform transmission on this repeated transmission. Among them, the terminal may cancel this repeated transmission and count it into the total number of repeated transmissions, or the terminal cancels this repeated transmission but does not count it into the total number of repeated transmissions. Optionally, the terminal performs this repeated transmission on other available resources. For example, the first transmission includes 2 repeated transmissions. The frequency domain unit where the first repeated transmission is located is available, and the frequency domain unit where the second repeated transmission is located is unavailable. Then the terminal cancels the transmission of the second repeated transmission and counts it into the total number of repeated transmissions (that is, the UE only transmits one repeated transmission), or the terminal cancels the transmission of the second repeated transmission on this frequency domain unit and does not count it into the total number of repeated transmissions (the UE transmits the second repeated transmission on other resources), and transmits one repeated transmission on other available resources, or the terminal cancels the repeated transmission between frequency domain units and transmits the first repeated transmission and the second repeated transmission on the frequency domain unit where the first repeated transmission is located).

[0066] Optionally, the repeated transmission method includes at least one of the following:

[0067] (1) The first repeated transmission method, indicating that the terminal transmits the at least two repeated transmissions of the first transmission on the same frequency domain unit at different time units.

[0068] Specifically, the first repeated transmission method is one of the time domain repeated transmission methods, indicating that different repeated transmissions of the first transmission are transmitted on the same frequency domain unit at different time units (i.e., time positions).

[0069] It should be noted that in Figures 4 to 16 , taking the BWP as the frequency domain unit as an example for illustration. However, the frequency domain unit can be any one of bandwidth (band), carrier, subband, and BWP, etc.

[0070] Optionally, within the same frequency domain unit, different repeated transmissions can also be at the same frequency domain position or different frequency domain positions. Figure 4 is a schematic diagram of different repeated transmissions at the same frequency domain position provided by an embodiment of the present application. As Figure 4 shown, the first repeated transmission, the second repeated transmission, the third repeated transmission, and the fourth repeated transmission are all at the same frequency domain position within BWP2, in Figure 4 . Figure 5It is a schematic diagram of different repeated transmissions at different frequency-domain positions in the same frequency-domain unit provided by an embodiment of the present application. As Figure 5 shown, the first repeated transmission, the second repeated transmission, the third repeated transmission, and the fourth repeated transmission are all within BWP2, but at different frequency-domain positions. The repeated transmissions at different frequency-domain positions within the same frequency-domain unit can be simply referred to as frequency-hopping time-domain repeated transmissions within a frequency-domain unit. Different repeated transmissions do not overlap in time and can overlap or not overlap within a frequency-domain unit in the frequency domain. Or, transmitting different repeated transmissions at different frequency-domain positions within a frequency-domain unit means that at least two of all repeated transmissions are at different frequency-domain positions within the frequency-domain unit. As Figure 5 shown, this method can be applicable when a single frequency-domain unit has a certain bandwidth.

[0071] (2) The second repeated transmission method, which means that the terminal transmits the at least two repeated transmissions of the first transmission on different frequency-domain units corresponding to different time units.

[0072] Specifically, the second repeated transmission method is the second type of time-domain repeated transmission method, which means that the terminal transmits different repeated transmissions of the first transmission on different frequency-domain units at different time units (i.e., time positions), and can be simply referred to as frequency-hopping time-domain repeated transmissions between frequency-domain units. Different repeated transmissions do not overlap in time and can overlap or not overlap in the frequency domain. Or, transmitting different repeated transmissions on different frequency-domain units means that at least two of all repeated transmissions are on different frequency-domain units. The second repeated transmission method can obtain a larger frequency diversity gain or anti-interference effect.

[0073] Figure 6 It is a schematic diagram of different repeated transmissions on different frequency-domain units corresponding to different time positions provided by an embodiment of the present application. As Figure 6 shown, the first repeated transmission is in BWP0, the second repeated transmission is in BWP2, the third repeated transmission is in BWP1, and the fourth repeated transmission is in BWP3, and different repeated transmissions are at different time positions.

[0074] (3) The third repeated transmission method, which means that the terminal transmits the at least two repeated transmissions of the first transmission on different frequency-domain units at the same time unit.

[0075] Specifically, the third repeated transmission method is a frequency-domain repeated transmission method, which means that different repeated transmissions of the first transmission are transmitted on different frequency-domain units at the same time unit (i.e., time position). Different repeated transmissions overlap or are the same in time and do not overlap in the frequency domain. This repeated transmission method can be simply referred to as frequency-hopping frequency-domain repeated transmissions between frequency-domain units. The third repeated transmission method can obtain a larger frequency diversity gain or anti-interference effect and can reduce the transmission delay.

[0076] Figure 7 This is a schematic diagram of different retransmissions provided by an embodiment of the present application in different frequency domain units at the same time position. As Figure 7 shown, the first retransmission is in BWP0, the second retransmission is in BWP1, the third retransmission is in BWP2, and the fourth retransmission is in BWP3, and they are at the same time position.

[0077] (4) The fourth retransmission mode means that the terminal first performs retransmissions in the frequency domain and then in the time domain on different frequency domain units corresponding to the same time unit or on different frequency domain units corresponding to different time units for the at least two retransmissions of the first transmission.

[0078] Specifically, the fourth retransmission mode is a time-frequency domain retransmission mode, which means that the terminal first performs retransmissions in the frequency domain and transmits different retransmissions on different frequency domain units in the same time unit. For the remaining retransmissions (if any), it then performs retransmissions in the time domain on different time units for at least two retransmissions of the first transmission, where different retransmissions are transmitted on different frequency domain units in a certain time unit. That is, the time-frequency domain position of each retransmission of the first transmission is determined in a frequency domain priority manner, where retransmissions are first performed in the frequency domain and then in the time domain. In the fourth retransmission mode, first, in a certain time unit, retransmissions are performed in the frequency domain on different frequency domain units. If all the retransmission times cannot be transmitted on different frequency domain units in this time unit, then the remaining at least part of the retransmission times are transmitted in the next time unit. In this mode, the first transmission can be retransmitted on one or more time units. In each time unit, if there are multiple frequency domain units available for the first transmission, different retransmissions can be transmitted on different frequency domain units. The fourth retransmission mode combines the advantages of the third retransmission mode and the first or second retransmission mode, can obtain a larger frequency diversity gain or anti-interference effect, and can reduce the transmission delay to a certain extent.

[0079] Figure 8 This is a schematic diagram of time-frequency domain retransmission provided by an embodiment of the present application. As Figure 8 shown, the first retransmission is in BWP0, the second retransmission is in BWP1, the third retransmission is in BWP2, the fourth retransmission is in BWP1, the fifth retransmission is in BWP2, and the sixth retransmission is in BWP1. Retransmissions are first performed in the frequency domain and then in the time domain. In a certain time unit, different retransmissions can be transmitted within different active or available frequency domain units.

[0080] Optionally, when only one of the at least two repeated transmissions of the first transmission is in a frequency-domain unit that is available, active, or the number of available frequency-domain units is less than a first value, the terminal falls back from the frequency-domain unit inter-repeated transmission mode to a non-repeated transmission mode or a non-frequency-domain unit inter-repeated transmission mode. For example, the terminal transmits different repeated transmissions at different times in the same frequency-domain unit.

[0081] Specifically, the frequency-domain unit inter-repeated transmission mode is a mode of transmitting on different frequency-domain units in the same time unit or on different frequency-domain units in different time units. The non-frequency-domain unit inter-repeated transmission mode is a mode of transmitting on the same frequency-domain unit in different time units. The non-repeated transmission mode is a mode of transmitting only one repeated transmission on the same frequency-domain unit in the same time unit.

[0082] Optionally, the first value is determined based on at least one of the following: the maximum number of repeated transmissions; network indication; protocol predefined.

[0083] For example, if the first transmission includes two repeated transmissions, the frequency-domain unit where the first repeated transmission is located is available, and the frequency-domain unit where the second repeated transmission is located is unavailable, the terminal can fall back from the frequency-domain unit inter-repeated transmission mode to a non-repeated transmission mode or a non-frequency-domain unit inter-repeated transmission mode. Or, the first transmission includes three repeated transmissions. For example, the maximum number of repetitions configured or indicated by the base station is 3. The frequency-domain units where the first and second repeated transmissions are located are available, and the frequency-domain unit where the third repeated transmission is located is unavailable. Then the terminal can fall back from the frequency-domain unit inter-repeated transmission mode to a non-repeated transmission mode or a non-frequency-domain unit inter-repeated transmission mode.

[0084] Optionally, the availability of the frequency-domain unit includes at least one of the following: the frequency-domain unit is activated or in an active state; the transmission direction configured or indicated for the frequency-domain unit at the time-domain position corresponding to the first transmission is the same as that of the first transmission. For example, when the first transmission is an uplink transmission, the time-domain position corresponding to this frequency-domain unit is configured or indicated as UL, flexible, or SubBand Full Duplex (SBFD) symbol. When the first transmission is a downlink transmission, the time-domain position corresponding to this frequency-domain unit is configured or indicated as DL, flexible, or SBFD symbol; the frequency-domain resources of the first transmission are within the available resources of the frequency-domain unit. For example, when the first transmission is an uplink transmission, the corresponding frequency-domain unit is configured as UL in the symbol where the uplink transmission is located, and the bandwidth of the frequency-domain resources of the first transmission is less than or equal to the UL frequency-domain bandwidth of the corresponding frequency-domain unit, or in other words, all the frequency-domain resources of the first transmission fall within the corresponding frequency-domain unit.

[0085] The repeated transmission method provided by the embodiment of the present application enables the terminal to determine the frequency domain units where each of at least two repeated transmissions of the first transmission is located. Based on the repeated transmission mode, the terminal performs transmission on the frequency domain units where at least one of the at least two repeated transmissions is located, so as to achieve repeated transmission of the first transmission on different frequency domain units, thereby enabling a relatively large frequency diversity gain or increasing the anti-interference ability of the uplink transmission, reducing the transmission delay of the first transmission, and improving the performance of the communication system.

[0086] Optionally, the specific implementation manner of step 301 includes:

[0087] The terminal determines the frequency domain units where each of the at least two repeated transmissions of the first transmission is located based on at least one of the following:

[0088] A predefined rule for determining the frequency domain units where at least one of the at least two repeated transmissions is located;

[0089] Target information for indicating the frequency domain units where at least one of the at least two repeated transmissions is located.

[0090] Specifically, the predefined rule is used to determine the frequency domain units where at least one of the at least two repeated transmissions is located. For example, according to the predefined rule, the frequency domain unit where the first repeated transmission is located is determined, and the frequency domain units where each repeated transmission starting from the second repeated transmission is located are determined through network configuration or indication. Alternatively, according to the predefined rule, the frequency domain units where each repeated transmission starting from the second repeated transmission is located are determined, and the frequency domain unit where the first repeated transmission is located is determined through network configuration or indication. The target information is used to indicate the frequency domain units where at least one of the at least two repeated transmissions is located. For example, the target information indicates the frequency domain units where the first repeated transmission, the second repeated transmission, and the third repeated transmission are located.

[0091] The terminal can determine the frequency domain units where each of the at least two repeated transmissions is located based on at least one of the predefined rule or the target information.

[0092] For example, determine the frequency-domain unit where the first retransmission is located according to predefined rules or DCI indication, or the frequency-domain units where each retransmission is located in at least two retransmissions predefined by the protocol. For example, the first transmission includes 2 retransmissions. The frequency-domain unit of the first retransmission is the frequency-domain unit with the smallest frequency-domain unit index, the lowest frequency, or the frequency-domain unit indicated to transmit the first transmission in the uplink active frequency-domain units. The frequency-domain unit where the second retransmission is located is the frequency-domain unit with the largest frequency-domain unit index or the highest frequency in the active frequency-domain units, or the next available or active frequency-domain unit after the frequency-domain unit where the first retransmission is located. Each retransmission starting from the second retransmission is determined in ascending order according to the frequency-domain unit index or frequency in the uplink active frequency-domain units. For example, the 4 retransmissions are respectively the first, second, third, and fourth frequency-domain units sorted in ascending order of index in the uplink active frequency-domain units.

[0093] Optionally, when the frequency-domain unit index increases or the frequency increases beyond the maximum index or maximum frequency of the frequency-domain units configured, available, or active for the terminal, the terminal can use wrap-around or modulo operation to determine the frequency-domain units where each retransmission starting from the second retransmission is located, that is, the frequency-domain unit corresponding after the increase of the maximum index or maximum frequency of the frequency-domain units is the first frequency-domain unit (with the smallest index) or the frequency-domain unit with the lowest frequency in the configured, available, or active frequency-domain units.

[0094] Optionally, the methods for obtaining the frequency-domain units where the first retransmission and each retransmission starting from the second retransmission are located can be the same or different. For example, the base station configures the frequency-domain unit where the first retransmission is located through network high-layer signaling, and determines the frequency-domain units where each retransmission starting from the second retransmission is located through predefined rules or network dynamic signaling indication. Or, the base station indicates the frequency-domain unit where the first retransmission is located through network dynamic indication signaling, and configures and determines the frequency-domain units where each retransmission starting from the second retransmission is located through predefined rules or network high-layer signaling.

[0095] Optionally, the base station can also configure or indicate the frequency-domain unit where the first retransmission is located through high-layer signaling or DCI, and determine the frequency-domain units where each retransmission starting from the second retransmission is located through predefined rules.

[0096] Optionally, the terminal receives high-layer signaling or dynamic signaling sent by the network-side device. The high-layer signaling is used to configure the target information, and the dynamic signaling is used to indicate the target information.

[0097] The network-side device may send high-layer signaling or dynamic signaling to the terminal, and the terminal receives the high-layer signaling or dynamic signaling sent by the network-side device; wherein, the high-layer signaling is used to configure target information, and the dynamic signaling is used to indicate target information; the target information is used to indicate the frequency-domain unit where at least one of the at least two repeated transmissions is located.

[0098] Optionally, the target information includes at least one of the following:

[0099] (a) First information, which is used to indicate the frequency-domain unit where each of the at least two repeated transmissions is located.

[0100] Specifically, the frequency-domain unit where each of the at least two repeated transmissions is located is determined by at least one of the high-layer signaling, dynamic signaling sent by the network-side device, or protocol predefined. For example, the first transmission is configured or indicated to have a repeated transmission count of 2, and the base station configures or indicates the frequency-domain unit index of the first repeated transmission The base station configures, indicates, or determines the frequency-domain unit index of the second repeated transmission in a protocol predefined manner

[0101] Optionally, when the first transmission is configured or enabled for repeated transmission and the base station configures or indicates the frequency-domain unit index of the first repeated transmission, the base station configures or indicates the frequency-domain unit index of each repeated transmission starting from the second repeated transmission.

[0102] (b) Second information, which is used to indicate the frequency-domain unit index of the first repeated transmission. For example, the base station configures or indicates the frequency-domain unit index of the first repeated transmission

[0103] (c) First frequency-domain unit offset, which is used to indicate the offset or minimum offset of the frequency-domain unit where each repeated transmission starting from the second repeated transmission is located relative to the frequency-domain unit where the first repeated transmission is located, or the offset or minimum offset relative to the frequency-domain unit where the previous repeated transmission is located.

[0104] Specifically, the first frequency-domain unit offset offset may only consider the active or available frequency-domain units, that is, offset the first frequency-domain unit offset number of active or available frequency-domain units after the frequency-domain unit where the first repeated transmission is located. The base station may configure or indicate or protocol predefine the first frequency-domain unit offset.

[0105] For example, the base station configures or indicates the frequency-domain unit index of the first repeated transmission And configure or indicate that the offset of the frequency domain unit index where the second repeated transmission is located relative to the frequency domain unit index where the first repeated transmission is located is 2, and the terminal determines the frequency domain unit index where the second repeated transmission is located according to the frequency domain unit index where the first repeated transmission is located And the offset 2, and determine that the frequency domain unit index where the second repeated transmission is located is

[0106] For example, the base station configures or indicates the frequency domain unit index where the first repeated transmission is located And configure or indicate that the offset of the frequency domain unit index where the second repeated transmission is located relative to the frequency domain unit index where the first repeated transmission is located is 2. The indexes of the frequency domain units where the terminal is activated are 0, 1, 4, 5, and 6 respectively. The terminal determines the frequency domain unit index where the second repeated transmission is located according to the frequency domain unit index where the first repeated transmission is located And the offset 2, and perform an offset among the activated frequency domain units to determine that the frequency domain unit index where the second repeated transmission is located is 5.

[0107] For example, the base station configures or indicates the frequency domain unit index where the first repeated transmission is located And configure or indicate that the minimum offset of the frequency domain unit index where the second repeated transmission is located relative to the frequency domain unit index where the first repeated transmission is located is 2. The terminal determines the frequency domain unit index according to the frequency domain unit index where the first repeated transmission is located And the minimum offset 2, and determine that the frequency domain unit index is (the offset times is 1). If the frequency domain unit with the frequency domain unit index 3 is available, the frequency domain unit index where the second repeated transmission is located is 3; if the frequency domain unit with the frequency domain unit index 3 is not available, the terminal offsets by 2 on the basis of the frequency domain unit index 3 to determine the frequency domain unit index as (the offset times is 2). If the frequency domain unit with the frequency domain unit index 5 is available, determine that the frequency domain unit with the frequency domain unit index 5 is the frequency domain unit index where the second repeated transmission is located. Otherwise, continue to offset by 2 on the basis of the frequency domain unit index 5 until an available frequency domain unit is found or the offset times reaches the maximum number or all possible frequency domain units are traversed. At this time, if the frequency domain unit with the frequency domain unit index 5 is available, the actual offset between the frequency domain unit index where the second repeated transmission is located and the frequency domain unit index where the first repeated transmission is located is 4, which is an integer multiple of the offset value 2 configured by the base station.

[0108] For example, determine the frequency domain unit index where the second repeated transmission is located according to the base station configuration, indication or according to a predefined rule And the base station configures or indicates that the offset of the frequency domain unit index where the third repeated transmission is located relative to the frequency domain unit index where the previous repeated transmission is located is 2. The terminal determines according to the frequency domain unit index where the second repeated transmission is located and offset 2, determine that the frequency domain unit index where the third retransmission is located is

[0109] For example, determine the frequency domain unit index where the third retransmission is located according to the base station configuration, indication, or according to a predefined rule and configure or indicate that the offset of the frequency domain unit index where the fourth retransmission is located relative to the frequency domain unit index where the previous retransmission is located is 3. The terminal determines according to the frequency domain unit index where the third retransmission is located and offset 3, determine that the frequency domain unit index where the fourth retransmission is located is

[0110] (d) The first frequency domain unit offset list; the first frequency domain unit offset list includes at least one second frequency domain unit offset, and the second frequency domain unit offset is used to indicate the offset or the minimum offset of the frequency domain unit index where each retransmission starting from the second retransmission is located relative to the frequency domain unit index where the first retransmission is located.

[0111] Specifically, the base station may configure one or more first frequency domain unit offset lists, which are identified by, for example, a frequency domain unit list ID, and indicate one of the first frequency domain unit offset lists for the first transmission, such as configuring or indicating a frequency domain unit list ID. The first frequency domain unit offset list includes at least one second frequency domain unit offset. For example, if the first transmission includes two repeated transmissions, only one second frequency domain unit offset is needed to determine the frequency domain unit index of the second repeated transmission. If the first frequency domain unit offset list contains one second frequency domain unit offset, the terminal determines the frequency domain unit of the second repeated transmission based on the frequency domain unit index of the first repeated transmission and the second frequency domain unit offset. Or, if the first transmission includes two repeated transmissions and the first frequency domain unit offset list contains multiple second frequency domain unit offsets, the terminal determines the candidate frequency domain units of the second repeated transmission based on the frequency domain unit index of the first repeated transmission and the second frequency domain unit offsets. For example, the terminal determines a frequency domain unit as the frequency domain unit of the second repeated transmission based on the frequency domain unit of the first repeated transmission and the first second frequency domain unit offset in the first frequency domain unit offset list. Or the terminal determines a first candidate frequency domain unit based on the frequency domain unit of the first repeated transmission and the first second frequency domain unit offset in the first frequency domain unit offset list. If the candidate frequency domain unit is available, it is determined as the frequency domain unit of the second repeated transmission. If the candidate frequency domain unit is unavailable, the terminal determines a second candidate frequency domain unit based on the frequency domain unit of the first repeated transmission and the second second frequency domain unit offset in the frequency domain unit offset list, and determines the frequency domain unit of the second repeated transmission according to whether the second candidate frequency domain unit is available. If the second candidate frequency domain unit is unavailable, the terminal determines a third candidate frequency domain unit based on the frequency domain unit of the first repeated transmission and the third second frequency domain unit offset in the first frequency domain unit offset list, and so on, until an available frequency domain unit is determined or until the last second frequency domain unit offset in the first frequency domain unit offset list.

[0112] Optionally, each second frequency domain unit offset in the first frequency domain unit offset list corresponds one-to-one to each repeated transmission starting from the second repeated transmission. For example, the first second frequency domain unit offset in the first frequency domain unit offset list corresponds to the second repeated transmission, and the second second frequency domain unit offset in the first frequency domain unit offset list corresponds to the third repeated transmission.

[0113] For example, the base station configures or indicates the frequency domain unit index of the first repeated transmission And configure or indicate that the first second frequency domain unit offset in the first frequency domain unit offset list is 2, where the second frequency domain unit offset indicates the offset of the frequency domain unit index where the second repeated transmission is located relative to the frequency domain unit index where the first repeated transmission is located. The terminal determines the frequency domain unit index where the second repeated transmission is located based on the frequency domain unit index where the first repeated transmission is located and the offset 2, and determines that the frequency domain unit index where the second repeated transmission is located is

[0114] For example, the base station configures or indicates the frequency domain unit index where the first repeated transmission is located and configures or indicates that the first second frequency domain unit offset in the first frequency domain unit offset list is 3, where the second frequency domain unit offset indicates the offset of the frequency domain unit index where the second repeated transmission is located relative to the frequency domain unit index where the first repeated transmission is located. The terminal determines the frequency domain unit index based on the frequency domain unit index where the first repeated transmission is located and the offset 3, and determines that the frequency domain unit index is (the number of offsets is 1). If the frequency domain unit with the frequency domain unit index 4 is available, the frequency domain unit index where the second repeated transmission is located is 4; if the frequency domain unit with the frequency domain unit index 4 is unavailable, the terminal further offsets by 3 based on the frequency domain unit index 4 and determines that the frequency domain unit index is (the number of offsets is 2). If the frequency domain unit with the frequency domain unit index 7 is available, it is determined that the frequency domain unit with the frequency domain unit index 7 is the frequency domain unit index where the second repeated transmission is located; otherwise, continue to offset by 3 based on the frequency domain unit index 7 until an available frequency domain unit is found, or the number of offsets reaches the maximum number, or all configured frequency domain units are traversed. At this time, if the frequency domain unit with the frequency domain unit index 7 is available, the actual offset between the frequency domain unit index where the second repeated transmission is located, which is 7, and the frequency domain unit index where the first repeated transmission is located, which is 1, is 6

[0115] Optionally, assume that there are only 2 repeated transmissions for PUCCH / PUSCH. A first frequency domain offset unit list configured by the base station contains multiple second frequency domain unit offsets, and each second frequency domain unit offset is used to indicate the offset or the minimum offset of the frequency domain unit index where the second repeated transmission is located relative to the frequency domain unit index where the first repeated transmission is located. At this time, the multiple second frequency domain unit offsets configured in the first frequency domain offset unit list can be candidate offsets, or in other words, the frequency domain units determined based on the multiple second frequency domain unit offsets are candidate frequency domain units. The terminal can use only one of the frequency domain units to transmit the second repeated transmission. For example, the terminal uses the first available frequency domain unit among the candidate frequency domain units as the frequency domain unit where the second repeated transmission is located

[0116] (e) The second frequency domain unit offset list; the second frequency domain unit offset list includes at least one third frequency domain unit offset, and the third frequency domain unit offset is used to indicate the offset or minimum offset of the frequency domain unit index where each retransmission starting from the second retransmission is located relative to the frequency domain unit index where the previous retransmission is located.

[0117] Specifically, the base station may also configure one or more second frequency domain unit offset lists, for example, identified by a frequency domain unit list ID, and indicate one of the second frequency domain unit offset lists for the first transmission, for example, configure or indicate a frequency domain unit list ID, and the second frequency domain unit offset list includes at least one third frequency domain unit offset. For example, if the first transmission includes 2 retransmissions, only one third frequency domain unit offset is needed to determine the frequency domain unit index where the second retransmission is located. The third frequency domain unit offset is used to indicate the offset or minimum offset of the frequency domain unit index where each retransmission starting from the second retransmission is located relative to the frequency domain unit index where the previous retransmission is located.

[0118] Each third frequency domain unit offset in the second frequency domain unit offset list corresponds one-to-one to each retransmission starting from the second retransmission. For example, the first third frequency domain unit offset in the second frequency domain unit offset list corresponds to the second retransmission, and the third second frequency domain unit offset in the first frequency domain unit offset list corresponds to the third retransmission.

[0119] For example, determine the frequency domain unit index where the second retransmission is located according to the base station configuration or indication or predefined rules And the base station configures or indicates that the first third frequency domain unit offset in the first frequency domain unit offset list is 2, and this third frequency domain unit offset indicates the offset of the frequency domain unit index where the second retransmission is located relative to the frequency domain unit index where the previous retransmission is located. The terminal determines according to the frequency domain unit index where the first retransmission is located And the offset 2, to determine that the frequency domain unit index where the second retransmission is located is

[0120] For example, determine the frequency domain unit index where the second retransmission is located according to the base station configuration or indication or predefined rules And configure or indicate that the first third frequency domain unit offset in the first frequency domain unit offset list is 3, and this third frequency domain unit offset indicates the minimum offset of the frequency domain unit index where the second retransmission is located relative to the frequency domain unit index where the previous retransmission is located. The terminal determines according to the frequency domain unit index where the second retransmission is located And the fourth target offset 3, to determine that the frequency domain unit index where the third retransmission is located is

[0121] Optionally, assuming that there are only two repeated transmissions for PUCCH / PUSCH, a second list of frequency-domain offset units configured by the base station includes multiple third frequency-domain unit offsets, and each third frequency-domain unit offset is used to indicate the offset or the minimum offset of the frequency-domain unit index where the second repeated transmission is located relative to the frequency-domain unit index where the previous repeated transmission is located. At this time, the multiple third frequency-domain unit offsets configured by the second list of frequency-domain offset units can be candidate offsets, or in other words, the frequency-domain units determined according to the multiple third frequency-domain unit offsets are candidate frequency-domain units. The terminal can use only one of the candidate frequency-domain units to transmit the second repeated transmission. For example, the terminal uses the first available frequency-domain unit among the candidate frequency-domain units as the frequency-domain unit where the second repeated transmission is located.

[0122] (f) A first list of frequency-domain units, where the first list of frequency-domain units is used to indicate the frequency-domain unit index where each repeated transmission starting from the second repeated transmission is located.

[0123] Specifically, determine the frequency-domain unit index where the first repeated transmission is located according to the configuration, indication, or predefined rules of the base station. The base station also configures or indicates a first list of frequency-domain units; the first list of frequency-domain units may include one or more frequency-domain unit indexes. Optionally, each frequency-domain unit index starting from the first frequency-domain unit index in the first list of frequency-domain units respectively corresponds to the frequency-domain unit index where each repeated transmission starting from the second repeated transmission is located. For example, the first list of frequency-domain units includes 3 frequency-domain unit indexes, where the first frequency-domain unit index corresponds to the frequency-domain unit index where the second repeated transmission is located, the second frequency-domain unit index corresponds to the frequency-domain unit index where the third repeated transmission is located, and the third frequency-domain unit index corresponds to the frequency-domain unit index where the fourth repeated transmission is located.

[0124] Optionally, assuming that there are only two repeated transmissions for PUCCH / PUSCH, in one implementation, the first frequency-domain unit index configured by the first list of frequency-domain units is the frequency-domain unit where the second repeated transmission is located; in another implementation, the multiple frequency-domain unit indexes configured by the first list of frequency-domain units are candidate frequency-domain unit indexes, and the terminal can select one of them to transmit the second repeated transmission. For example, the terminal uses the first available frequency-domain unit among them as the frequency-domain unit where the second repeated transmission is located.

[0125] (g) A second list of frequency-domain units, where the second list of frequency-domain units is used to indicate the frequency-domain unit index where each repeated transmission in the at least two repeated transmissions is located.

[0126] Specifically, the base station configures or indicates a second list of frequency domain units. The second list of frequency domain units includes multiple frequency domain unit indices. Each frequency domain unit index starting from the first frequency domain unit index in the second list of frequency domain units respectively corresponds to the frequency domain unit index where each repeated transmission is located. For example, the second list of frequency domain units includes 3 frequency domain unit indices. Among them, the first frequency domain unit index corresponds to the frequency domain unit index where the first repeated transmission is located, the second frequency domain unit index corresponds to the frequency domain unit index where the second repeated transmission is located, and the third frequency domain unit index corresponds to the frequency domain unit index where the third repeated transmission is located. The terminal can determine the frequency domain unit where each repeated transmission is located according to the second list of frequency domain units.

[0127] Optionally, assuming that there are only 2 repeated transmissions for PUCCH / PUSCH, the multiple frequency domain unit indices configured in the second list of frequency domain units are candidate frequency domain unit indices. The terminal can select two of them for the second repeated transmission. For example, the terminal uses the first available frequency domain unit as the frequency domain unit where the first repeated transmission is located, and uses the second available frequency domain unit as the frequency domain unit where the second repeated transmission is located, or the first frequency domain unit index and the second frequency domain unit index in the second list of frequency domain units respectively correspond to the first repeated transmission and the second repeated transmission.

[0128] (h) Repeated transmission pattern, which is used to indicate the frequency domain unit where each repeated transmission in the at least two repeated transmissions is located.

[0129] Optionally, the method for obtaining the frequency domain unit index where the first repeated transmission is located is the same as or different from the method for obtaining the frequency domain unit index where each repeated transmission starting from the second repeated transmission is located.

[0130] Specifically, the base station configures the frequency domain unit index where the first repeated transmission is located through high-layer signaling, and indicates the frequency domain unit index where the second repeated transmission is located through dynamic indication signaling; or, the base station indicates the frequency domain unit index where the first repeated transmission is located through dynamic indication signaling, and configures the frequency domain unit index where the first repeated transmission is located through high-layer signaling.

[0131] Optionally, the retransmission pattern further indicates the time domain unit in which each retransmission of the first transmission is located or the relationship between the time domain units in which different retransmissions are located. For example, it is indicated by an X-bit bitmap, where each bit of the bitmap corresponds to a time unit, 1 indicates that the first transmission is made in this time unit, and 0 indicates that the first transmission is not made in this time unit. For example, 10010 indicates that the first transmission makes the first retransmission and the second retransmission in the first slot and the fourth slot respectively. The first slot and the fourth slot may be the first slot or the fourth slot starting from a certain slot configured or indicated by the base station. In the prior art, the time domain unit in which the first retransmission of the first transmission is located is determined according to the configuration or indication of the base station, and the time domain units in which the remaining retransmissions are located are determined according to predefined rules (for example, the time domain units in which different retransmissions are located are consecutive time slots or sub-time slots or consecutive available time slots or sub-time slots, etc.). The retransmission pattern further indicating the time domain unit in which each retransmission of the first transmission is located or the relationship between the time domain units in which different retransmissions are located can flexibly indicate the time domain units in which different retransmissions are located, ensuring that each retransmission of the first transmission can be transmitted and improving the reliability of the first transmission.

[0132] In the embodiments of the present application, the terminal can accurately determine the frequency domain unit in which each of at least two retransmissions of the first transmission is located based on the target information configured or indicated by the base station, enabling the terminal to perform transmissions on different frequency domain units in which at least one of the at least two retransmissions is located, thereby obtaining a larger frequency diversity gain or increasing the anti-interference ability of the uplink transmission and improving the performance of the communication system.

[0133] Optionally, the specific implementation manner of the above step 301 includes any one of the following:

[0134] (1) The terminal determines the frequency domain unit index of the hth retransmission based on the frequency domain unit index of the first retransmission and the first frequency domain unit offset; where h is an integer greater than 1.

[0135] For example, when h is 2, the frequency domain unit index of the first retransmission is 1, and the first frequency domain unit offset is 2, then the terminal can determine that the frequency domain unit index of the second retransmission is 3; when h is 3, the terminal can determine that the frequency domain unit index of the third retransmission is 5.

[0136] (2) The terminal determines the frequency domain unit index of the (m + 1)th retransmission based on the frequency domain unit index of the mth retransmission and the first frequency domain unit offset; where m is an integer greater than 0.

[0137] For example, when m = 1, the frequency domain unit index where the m-th repeated transmission is located is 1, and the first frequency domain unit offset is 2. Then, the frequency domain unit index determined by the terminal's first offset is 3. However, since the frequency domain unit with index 3 is unavailable, the terminal offsets by 2 based on the frequency domain unit index 3. Then, the frequency domain unit index determined by the terminal's second offset is 5. When the frequency domain unit with index 5 is unavailable, the terminal offsets by 2 again based on the frequency domain unit index 5. Then, the frequency domain unit index determined by the third offset is 1 + 2×3 = 7. When the frequency domain unit with index 7 is unavailable, the terminal repeats the offset until it finds an available frequency domain unit or until it has completed the maximum number of predefined or base station-configured offsets.

[0138] (3) The terminal determines the frequency domain unit index where the (i + 1)-th repeated transmission is located based on the frequency domain unit index where the first repeated transmission is located and the i-th second frequency domain unit offset in the first frequency domain unit offset list; where i is a positive integer.

[0139] Specifically, the first frequency domain unit offset list includes at least one second frequency domain unit offset, and each second frequency domain unit offset corresponds one-to-one to each repeated transmission starting from the second repeated transmission.

[0140] For example, when i = 1, the frequency domain unit index where the first repeated transmission is located is 1, and the first second frequency domain unit offset in the first frequency domain unit offset list is 2. The second frequency domain unit offset represents the offset relative to the frequency domain unit index where the first repeated transmission is located. Then, the terminal can determine that the frequency domain unit index where the second repeated transmission is located is 3; when i = 2, the frequency domain unit index where the first repeated transmission is located is 1, and the second second frequency domain unit offset in the first frequency domain unit offset list is 3. Then, the terminal can determine that the frequency domain unit index where the third repeated transmission is located is 4.

[0141] (4) The terminal determines the frequency domain unit index where the (g + 1)-th repeated transmission is located based on the frequency domain unit index where the g-th repeated transmission is located and the g-th third frequency domain unit offset in the second frequency domain unit offset list; where g is a positive integer.

[0142] For example, when g = 2, the frequency domain unit index where the second repeated transmission is located is 2, the third frequency domain unit offset represents the offset relative to the frequency domain unit index where the previous repeated transmission is located. If the second frequency domain unit offset at the 2nd position in the first frequency domain unit offset list is 2, the determined frequency domain unit index is 2 + 2 = 4; when the frequency domain unit with index 4 is unavailable, if the second frequency domain unit offset at the 3rd position in the frequency domain unit offset list is 5, the determined frequency domain unit index is 4 + 6 = 10; when the frequency domain unit with index 10 is unavailable, repeatedly take the second frequency domain unit offset in the first frequency domain unit list until the determined frequency domain unit is available or the last third frequency domain unit offset in the second frequency domain offset unit list is executed.

[0143] Optionally, when the frequency domain unit where any determined repeated transmission is located is unavailable, the terminal performs transmission according to at least one of the following: the terminal cancels the any repeated transmission; the terminal defers the any repeated transmission to the next available frequency domain unit for transmission; the terminal defers the any repeated transmission to the available frequency domain unit corresponding to the next available time unit.

[0144] For example, the first transmission includes 2 repeated transmissions. The frequency domain unit index where the first repeated transmission is located is 1, the first offset is 2, and the determined frequency domain unit index where the second repeated transmission is located is 3. However, the frequency domain unit with index 3 is unavailable. Then the terminal can cancel the second repeated transmission, or the terminal can switch the second repeated transmission to another frequency domain unit, such as transmitting in the frequency domain unit with index 5 (assuming the frequency domain unit 5 is available), or the terminal defers the second repeated transmission to the available frequency domain unit corresponding to the next available time unit (assuming the frequency domain unit 1 is available) for transmission. Optionally, when the next available time unit is an uplink transmission, the frequency domain unit where it is located can be the same as or different from that before deferral.

[0145] Optionally, when the frequency domain unit index obtained based on the first frequency domain unit offset, the second frequency domain unit offset, or the third frequency domain unit offset is greater than the maximum index among the configured, activated, or available multiple frequency domain units, or the frequency of the frequency domain unit is greater than the maximum frequency among the configured, activated, or available multiple frequency domain units, the terminal determines the frequency domain unit index where each repeated transmission starting from the second repeated transmission is located by using a wrap around or modulo operation.

[0146] For example, when is greater than the maximum index among the configured or activated multiple frequency domain units, the terminal uses a wrap around or modulo operation to determine such as wherein, Indicates the number of uplink configured, available, or active frequency domain units.

[0147] Optionally, the specific implementation manner of step 301 includes:

[0148] The terminal determines the frequency domain unit where each of the at least two repeated transmissions of the first transmission is located according to the order of the frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list.

[0149] Specifically, the first frequency domain unit list includes multiple frequency domain unit indexes, and each frequency domain unit index in the first frequency domain unit list respectively corresponds to the frequency domain unit index where each repeated transmission starting from the second repeated transmission is located. For example, the first frequency domain unit list includes 2 frequency domain unit indexes, where the 1st frequency domain unit index corresponds to the frequency domain unit index where the second repeated transmission is located, and the 2nd frequency domain unit index corresponds to the frequency domain unit index where the third repeated transmission is located. The terminal can determine the frequency domain unit where each repeated transmission is located according to the first frequency domain unit list.

[0150] The terminal can determine the frequency domain unit index where each repeated transmission starting from the second repeated transmission is located in the order that the frequency domain unit indexes in the first frequency domain unit list correspond to the frequency domain unit indexes where each repeated transmission starting from the second repeated transmission is located in sequence. Then, according to the frequency domain unit index where the first repeated transmission is located and the frequency domain unit indexes where each repeated transmission starting from the second repeated transmission is located, the frequency domain unit where at least one of the at least two repeated transmissions is located is determined.

[0151] For example, the first frequency domain unit list includes 3 frequency domain unit indexes, where the 1st frequency domain unit index corresponds to the frequency domain unit index where the second repeated transmission is located, the 2nd frequency domain unit index corresponds to the frequency domain unit index where the third repeated transmission is located, and the 3rd frequency domain unit index corresponds to the frequency domain unit index where the fourth repeated transmission is located. The terminal can determine that the frequency domain unit index where the second repeated transmission is located is the 1st frequency domain unit index, the frequency domain unit index where the third repeated transmission is located is the 2nd frequency domain unit index, and the frequency domain unit index where the fourth repeated transmission is located is the 3rd frequency domain unit index in the order that the frequency domain unit indexes in the first frequency domain unit list correspond to the frequency domain unit indexes where each repeated transmission starting from the second repeated transmission is located in sequence.

[0152] The second frequency domain unit list also includes multiple frequency domain unit indexes. Each frequency domain unit index in the second frequency domain unit list is used to indicate the frequency domain unit index where each repeated transmission is located in at least two repeated transmissions. For example, the second frequency domain unit list includes 3 frequency domain unit indexes. Among them, the first frequency domain unit index corresponds to the frequency domain unit index where the first repeated transmission is located, the second frequency domain unit index corresponds to the frequency domain unit index where the second repeated transmission is located, and the third frequency domain unit index corresponds to the frequency domain unit index where the third repeated transmission is located. The terminal can determine the frequency domain unit where each repeated transmission is located according to the second frequency domain unit list.

[0153] The terminal can also determine the frequency domain unit index where each repeated transmission is located in at least two repeated transmissions of the first transmission according to the order of the frequency domain unit indexes in the second frequency domain unit list corresponding to each repeated transmission starting from the second repeated transmission. For example, the terminal determines that the first frequency domain unit index is the frequency domain unit index where the first repeated transmission is located, the second frequency domain unit index is the frequency domain unit index where the second repeated transmission is located, and the third frequency domain unit index is the frequency domain unit index where the third repeated transmission is located.

[0154] In the embodiment of the present application, the terminal determines the frequency domain unit index where each repeated transmission is located through the first frequency domain unit column or the second frequency domain unit list, improving the determination efficiency of each repeated transmission, enabling the first transmission to perform repeated transmissions on different frequency domain units, thereby obtaining a larger frequency domain diversity gain or increasing the anti-interference ability, while reducing the delay and improving the effectiveness and performance of the communication system.

[0155] Optionally, in the case where the first target frequency domain unit determined according to the order of the frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list is unavailable, the terminal cancels the repeated transmission corresponding to the first target frequency domain unit; or, in the case where the second target frequency domain unit determined according to the order of the frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list is unavailable, the terminal sequentially proceeds to the next frequency domain unit of the second target frequency domain unit until the determined frequency domain unit is available or the last frequency domain unit in the first frequency domain unit list.

[0156] Specifically, the first target frequency domain unit is an unavailable frequency domain unit in the first frequency domain unit list or the second frequency domain unit list. When the first target frequency domain unit determined by the terminal according to the order of the frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list is unavailable, the terminal can cancel the repeated transmission corresponding to the first target frequency domain unit, that is, the repeated transmission corresponding to the first target frequency domain unit is included in the total number of repeated transmissions. Or,

[0157] When the second target frequency domain unit determined in the order of the frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list is unavailable, the terminal may sequentially move to the next frequency domain unit of the second target frequency domain unit. In this case, the repeated transmission corresponding to the second target frequency domain unit is not counted in the total number of repeated transmissions. When the next frequency domain unit of the second target frequency domain unit is unavailable, the next frequency domain unit is used as the second target frequency domain unit, and then the terminal moves to the next frequency domain unit of this second target frequency domain unit until the determined frequency domain unit is available or until the last frequency domain unit in the first frequency domain unit list is reached.

[0158] For example, the first frequency domain unit list includes 3 frequency domain unit indexes. When the frequency domain unit corresponding to the first frequency domain unit index is available, the terminal determines the frequency domain unit index corresponding to the first frequency domain unit index as the frequency domain unit index where the second repeated transmission is located; when the frequency domain unit corresponding to the first frequency domain unit index is unavailable, the terminal may cancel the second repeated transmission; or, the terminal determines whether the frequency domain unit corresponding to the second frequency domain unit index is available. When the frequency domain unit corresponding to the second frequency domain unit index is available, the terminal determines the frequency domain unit index corresponding to the second frequency domain unit index as the frequency domain unit index where the second repeated transmission is located.

[0159] For example, the second frequency domain unit list includes 4 frequency domain unit indexes. The terminal determines the frequency domain unit index corresponding to the first frequency domain unit index as the frequency domain unit index where the first repetition is located. The terminal determines whether the frequency domain unit corresponding to the second frequency domain unit index is available. When the frequency domain unit corresponding to the second frequency domain unit index is available, the terminal determines the frequency domain unit index corresponding to the second frequency domain unit index as the frequency domain unit index where the second repetition is located; when the frequency domain unit corresponding to the second frequency domain unit index is unavailable, the terminal may cancel the second repetition; or, the terminal determines whether the frequency domain unit corresponding to the third frequency domain unit index is available. When the frequency domain unit corresponding to the third frequency domain unit index is available, the terminal determines the frequency domain unit index corresponding to the third frequency domain unit index as the frequency domain unit index where the second repetition is located.

[0160] Alternatively, the terminal respectively determines the corresponding candidate frequency domain units according to the first frequency domain unit list, and selects the first N available frequency domain units from the candidate frequency domain units for the second, third,..., (N + 1)th repeated transmissions of the first transmission respectively.

[0161] Alternatively, the terminal respectively determines the corresponding candidate frequency domain units according to the second frequency domain unit list, and selects the first M available frequency domain units from the candidate frequency domain units for the first, second,..., Mth repeated transmissions of the first transmission respectively.

[0162] Optionally, the method further includes any one of the following:

[0163] When the number of frequency domain units M in the first frequency domain unit list is greater than or equal to (N - 1) or the number of frequency domain units M in the second frequency domain unit list is greater than or equal to N, the terminal determines the first N - 1 frequency domain unit indices in the first frequency domain unit list as the frequency domain unit indices where each repeat transmission starting from the second repeat transmission is located, or determines the first N frequency domain unit indices in the second frequency domain unit list as the frequency domain units where each of the at least two repeat transmissions is located, in the order of the frequency domain unit indices in the first frequency domain unit list or the second frequency domain unit list; M is a positive integer, and N is the number of repeat transmissions configured or indicated for the first transmission.

[0164] When the number of frequency domain units M in the first frequency domain unit list is less than (N - 1), for each repeat transmission before the (M + 2)-th repeat transmission, the terminal sequentially determines the M frequency domain unit indices in the first frequency domain unit list as the frequency domain unit indices where the second repeat transmission to the (M + 1)-th repeat transmission are located; for each repeat transmission starting from the (M + 2)-th repeat transmission, the terminal cycles starting from the first frequency domain unit among the M frequency domain units in the first frequency domain unit list, or cycles in reverse from the last frequency domain unit or the penultimate frequency domain unit among the M frequency domain units in the first frequency domain unit list, to determine the frequency domain unit indices where each repeat transmission starting from the (M + 2)-th repeat transmission is located; M is a positive integer, and N is the number of repeat transmissions configured or indicated for the first transmission.

[0165] When the number of frequency domain units M in the second frequency domain unit list is less than N, for each repeat transmission before the (M + 1)-th repeat transmission, the terminal sequentially determines the M frequency domain unit indices in the second frequency domain unit list as the frequency domain unit indices where the first repeat transmission to the M-th repeat transmission are located; for each repeat transmission starting from the (M + 1)-th repeat transmission, the terminal cycles starting from the first frequency domain unit among the M frequency domain units in the second frequency domain unit list, or cycles in reverse from the last frequency domain unit or the penultimate frequency domain unit among the M frequency domain units in the second frequency domain unit list, to determine the frequency domain unit indices where each repeat transmission starting from the (M + 1)-th repeat transmission is located, where M is a positive integer, and N is the number of repeat transmissions configured or indicated for the first transmission.

[0166] For example, if the number of frequency domain units M in the first frequency domain unit list or the second frequency domain unit list is 4 and the number of repeated transmissions is 3, the terminal determines the first 2 frequency domain unit indices in the first frequency domain unit list or the second frequency domain unit list as the frequency domain unit indices of the second repeated transmission and the third repeated transmission in the order corresponding to the frequency domain unit indices of each repeated transmission starting from the second repeated transmission according to the frequency domain unit indices in the first frequency domain unit list or the second frequency domain unit list.

[0167] For example, if the number of frequency domain units M in the first frequency domain unit list is 4 and the number of repeated transmissions is 6, the terminal determines the 4 frequency domain unit indices in the first frequency domain unit list as the frequency domain unit indices of the second repeated transmission to the fifth repeated transmission in the order of the frequency domain unit indices in the first frequency domain unit list. For the frequency domain unit index of the sixth repeated transmission, the terminal determines the first frequency domain unit, the fourth frequency domain unit or the third frequency domain unit in the first frequency domain unit list as the frequency domain unit index of the sixth repeated transmission.

[0168] For example, if the number of frequency domain units M in the second frequency domain unit list is 4 and the number of repeated transmissions is 8, the terminal determines the first 4 frequency domain unit indices in the first frequency domain unit list as the frequency domain unit indices of the first repeated transmission to the fourth repeated transmission in the order of the frequency domain unit indices in the second frequency domain unit list. For the frequency domain unit index of the fifth repeated transmission, the terminal determines the first frequency domain unit, the fourth frequency domain unit or the third frequency domain unit in the first frequency domain unit list as the frequency domain unit index of the fifth repeated transmission (corresponding to the above different methods respectively). For the frequency domain unit index of the sixth repeated transmission, the terminal determines the second frequency domain unit, the third frequency domain unit or the second frequency domain unit in the first frequency domain unit list as the frequency domain unit index of the sixth repeated transmission. For the frequency domain unit index of the seventh repeated transmission, the terminal determines the third frequency domain unit, the second frequency domain unit or the first frequency domain unit in the first frequency domain unit list as the frequency domain unit index of the seventh repeated transmission. For the frequency domain unit index of the eighth repeated transmission, the terminal determines the fourth frequency domain unit, the first frequency domain unit or the fourth frequency domain unit in the first frequency domain unit list as the frequency domain unit index of the eighth repeated transmission. That is, the frequency domain units corresponding to each of the 8 repeated transmissions are determined in a cyclic manner, where the length of the cycle is 4.

[0169] Next, the repeated transmission method provided by the embodiments of the present application will be further described through specific embodiments.

[0170] Embodiment 1

[0171] Suppose a cell consists of four frequency-domain units, and the sizes of these four frequency-domain units (frequency-domain unit index 0, frequency-domain unit index 1, frequency-domain unit index 2, frequency-domain unit index 3) are 5 MHz, 10 MHz, 20 MHz, and 5 MHz respectively. The base station can configure some or all of the frequency-domain units for uplink transmission. The base station can also activate or deactivate these 4 frequency-domain units.

[0172] For each PUCCH resource, the base station configures (e.g., according to the frequency-domain unit index (ID) where the PUCCH resource is configured, or configures the frequency-domain unit corresponding to this PUCCH resource for each PUCCH resource, or for Channel State Information (CSI), Scheduling Request (SR), or Semi-Persistent Scheduling (SPS) Hybrid automatic repeat request acknowledgement (HARQ-ACK) reporting, indicates the frequency-domain unit where CSI, SR, SPS, or HARQ-ACK reporting is located), or indicates (e.g., for dynamically scheduled HARQ-ACK, indicates the frequency-domain unit index where HARQ-ACK is located through scheduling or activating DCI) the frequency-domain unit index where the first retransmission is located (the frequency-domain unit index can be the ID), and configures or indicates the frequency-domain unit indices where the remaining retransmissions are located.

[0173] For example, the base station configures the frequency-domain unit ID where each PUCCH transmission (if the PUCCH transmission is configured with retransmissions, it is the first transmission) is located through higher-layer parameters. Figure 9 is one of the schematic diagrams of the frequency-domain unit indices where each retransmission of the PUCCH transmission provided by the embodiments of the present application is located. As Figure 9 shown, the base station configures the first retransmission of a PUCCH transmission in BWP0 through higher-layer configuration, and configures or indicates the number of PUCCH retransmissions. When this PUCCH is configured or enabled for inter-frequency-domain-unit retransmissions (which can also be said to be inter-frequency-domain-unit frequency hopping), the UE determines the frequency-domain units where the remaining retransmissions are located according to at least one of higher-layer configurations (such as configured frequency-hopping pattern, the frequency-domain unit where each retransmission is located, or frequency-domain unit offset, etc.) and predefined rules.

[0174] As Figure 9As shown, the base station instructs the terminal to transmit PUCCH / PUSCH in a certain time unit, and configures the repetition transmission mode as the second repetition transmission mode (time-domain repetition transmission mode, that is, different repetitions of the PUCCH / PUSCH are transmitted at different time positions and different frequency domain units (simply referred to as frequency-hopping repetition transmission between frequency domain units)). Figure 5 As shown. Among them, different repetitions do not overlap in time, and may or may not overlap in frequency domain. Or it means that the frequency domain units where different repetitions are transmitted on different frequency domain units are different for at least two repetitions among all repetitions.

[0175] Assume that the number of repetitions configured for the PUCCH / PUSCH is 4, and the PUCCH / PUSCH is configured semi-statically (by high-layer signaling). According to the configuration, the frequency domain unit where the first repetition of the PUCCH / PUSCH is located is BWP0, and the frequency domain unit indexes of the remaining repetitions are determined in the way that the frequency domain unit index increases by 1 (optionally, including wraparound operation). Then the UE determines that the frequency domain unit where the second repetition is located is BWP1, the frequency domain unit where the third repetition is located is BWP2, and the frequency domain unit where the fourth repetition is located is BWP3. As Figure 9 shown, since all the frequency domain units corresponding to the time unit where the fourth repetition is located are active UL frequency domain units, the UE can transmit 4 repetitions respectively.

[0176] Figure 10 is the second schematic diagram of the frequency domain unit index where each repetition of the first transmission (assumed to be PUCCH transmission) provided by the embodiment of the present application. As Figure 10 shown, assume that according to the base station configuration, indication or certain rules, the time unit where the 4th repetition among the four repetitions is located is slot 3, and the frequency domain unit is BWP0. Since the frequency domain unit corresponding to the 4th repetition of the PUCCH in this time unit overlaps with the DL resource, the UE cannot transmit the 4th repetition on this time-frequency resource. In one implementation, the UE cancels the 4th repetition; in another implementation, the UE defers the 4th repetition to the next available time-frequency resource, as Figure 11 or shown in 12. Figure 11 is the third schematic diagram of the frequency domain unit index where each repetition of the PUCCH transmission provided by the embodiment of the present application. As Figure 11 shown, the UE defers the 4th repetition to another available frequency domain unit in the same time domain unit, such as BWP1. Figure 12 is the fourth schematic diagram of the frequency domain unit index where each repetition of the PUCCH transmission provided by the embodiment of the present application. As Figure 12As shown in the figure, the UE defers the 4th repeated transmission to the same frequency-domain unit in the next available time unit (the frequency-domain unit corresponding to slot4, i.e., BWP0).

[0177] Figure 13 This is the fifth schematic diagram of the frequency-domain unit index where each repeated transmission of PUCCH transmission provided by the embodiments of the present application is located, as follows Figure 13 As shown in the figure, the base station instructs the UE to transmit PUCCH / PUSCH in a certain time unit and configures the repeated transmission mode as frequency-domain repeated transmission, that is, different repeated transmissions of the first transmission are transmitted at the same time position but in different frequency-domain units. Among them, different repeated transmissions do not overlap in the frequency domain.

[0178] Assume that the number of repeated transmissions configured for the PUCCH / PUSCH is 4, and the PUCCH / PUSCH is scheduled by DCI. According to the scheduling DCI corresponding to the PUCCH / PUSCH, it is determined that the frequency-domain unit where the first repeated transmission of the PUCCH / PUSCH is located is BWP2, and the frequency-domain unit indexes of the remaining repeated transmissions are determined in the manner of incrementing the frequency-domain unit index by 1 (optionally, including wrap around). Then the UE determines that the frequency-domain unit where the second repeated transmission is located is BWP3, the frequency-domain unit where the third repeated transmission is located is BWP0, and the frequency-domain unit where the fourth repeated transmission is located is BWP1.

[0179] Since in this time unit, BWP3 is configured as DL resources or is in an inactive state, and the UE cannot perform PUCCH / PUSCH transmission on BWP3, in one implementation, the UE cancels the second repeated transmission; in another implementation, the UE determines that the frequency-domain unit where each repeated transmission is located skips the unavailable frequency-domain unit. As Figure 13 shown in the figure, the UE defers the second repeated transmission to BWP0 for transmission, the third repeated transmission is transmitted on BWP1. Since there are no more available frequency-domain units in this time unit, the fourth repeated transmission is cancelled or not transmitted, and the UE actually only transmits 3 repeated transmissions.

[0180] Among them, for PUSCH / PDSCH, etc., there are different redundancy versions (RVs) during encoding. The RV can be determined according to a predefined order, base station configuration, or indication. For example, transmissions in the order of RV 0, 1, 2, 3 respectively correspond to different retransmissions. In the retransmission of the first transmission, if a certain retransmission cannot be performed by the UE on the frequency domain unit because the frequency domain unit where it is located is configured as a DL resource or is in an inactive state, or the UE cannot perform PUCCH / PUSCH transmission on this frequency domain unit, etc., the UE cancels this retransmission. When the UE determines the RV corresponding to each retransmission, in one implementation, it determines the RV version according to the actually transmitted retransmissions, that is, in the actually transmitted retransmissions, the RVs 0, 1, 2, 3 correspond to different retransmissions in sequence. In another implementation, when the UE determines the RV corresponding to each retransmission, it does not consider whether each retransmission can be transmitted or cancelled, and determines the corresponding RV version among all retransmissions including the cancelled retransmissions. As Figure 13 shown, the retransmission on BWP3 is cancelled, and the UE corresponds to each retransmission in the manner of RV 0, 1, 2, 3 respectively. Therefore, the RV1 corresponding to the second retransmission is cancelled. Figure 14 is the sixth schematic diagram of the frequency domain unit index where each retransmission of PUCCH transmission provided by the embodiment of the present application is located, as follows Figure 14 shown, the actually transmitted 1st, 2nd, and 3rd retransmissions are RV 0, 1, 2 respectively, where RV3 can be cancelled or there is no transmission position corresponding to the retransmission.

[0181] Figure 15 is the seventh schematic diagram of the frequency domain unit index where each retransmission of PUCCH transmission provided by the embodiment of the present application is located, as follows Figure 15 shown, the base station instructs the UE to transmit PUCCH / PUSCH in a certain time unit, and configures the retransmission method as time-frequency domain retransmission, that is, the time-frequency domain position where each retransmission of the first transmission is located is determined in a frequency domain priority manner, where the repetition is first performed in the frequency domain and then in the time domain.

[0182] Assume that the configured number of retransmissions of the PUCCH / PUSCH is 4, and the PUCCH / PUSCH is scheduled by DCI. According to the scheduling DCI corresponding to the PUCCH / PUSCH, the frequency domain unit where the first retransmission of the PUCCH / PUSCH is located is determined to be BWP2, and the remaining retransmissions are determined according to the method of incrementing the index by 1 in the active or available frequency domain units. Then the UE determines that the frequency domain unit where the second retransmission is located is BWP3.

[0183] Since BWP3 is configured as a DL resource or is in an inactive state, that is, the frequency domain unit index increases beyond the maximum index of the UE-activated frequency domain units. At this time, the UE performs a wrap around operation. The frequency domain unit where the second repeated transmission is located is the first frequency domain unit BWP0 in the UL-activated frequency domain units. The frequency domain unit where the third repeated transmission is located is incremented by 1 based on the frequency domain unit where the second repeated transmission is located. The frequency domain unit where the third repeated transmission is located is BWP1.

[0184] Since there are no more activated or available frequency domain units in this time unit, the fourth repeated transmission is transmitted in the next available time unit (the determination method of the time unit can be the same as the prior art, such as the next time slot or sub-slot). In one implementation, the corresponding frequency domain unit is BWP1 (starting from the smallest index in the activated / available BWPs). In another way, in the next time unit, the determination order of the frequency domain units is the same as that of the first time unit, that is, first check whether BWP2 is activated or available, and determine the frequency domain units corresponding to different repeated transmissions in the way that the index in the frequency domain unit is incremented by 1 (optionally, including the wrap around operation).

[0185] Figure 16 It is the eighth schematic diagram of the frequency domain unit index where each repeated transmission of the PUCCH transmission provided by the embodiments of the present application is located, as follows Figure 16 As shown, without including the wrap around operation, when the UE determines the frequency domain unit corresponding to the second repeated transmission, there is no activated or available BWP with an index larger than BWP2 in the same time unit. Then the second repeated transmission is transmitted in the next available time unit (the determination method of the time unit can be the same as the prior art, such as the next time slot or sub-slot). In one implementation, its corresponding frequency domain unit is BWP1 (starting from the smallest index in the activated or available BWPs). The third repeated transmission is in the same time unit as the second repeated transmission. The frequency domain unit where the second repeated transmission is located is BWP1, and the frequency domain unit where the third repeated transmission is located is BWP2. The fourth repeated transmission is then transmitted in the next available time unit, and the frequency domain unit where the fourth repeated transmission is located is BWP1 (assuming starting from the smallest index in the activated / available BWPs). In another implementation, in the next time unit, the determination order of the frequency domain units is the same as that of the first time unit, that is, first check whether BWP2 is activated or available, and determine the frequency domain units corresponding to different repeated transmissions in the way that the index in the frequency domain unit is incremented by 1 (optionally, whether to include the wrap around operation is the same as that in the first time unit). Then the frequency domain units where the 2nd, 3rd, and 4th repeated transmissions are located are all BWP2, and in different time units, as Figure 17 shown, Figure 17It is the ninth schematic diagram of the frequency domain unit index where each repeated transmission of PUCCH transmission provided by the embodiment of the present application is located.

[0186] Embodiment 2

[0187] In the prior art, the downlink physical downlink shared channel (PDSCH) transmission supports discontinuous physical resource block (PRB) allocation within a single bandwidth part (BWP), so frequency domain hopping does not need to be supported. For the frequency domain spectrum resources in the sub-3G range, the frequency domain resources of a single band are relatively narrow. If the PDSCH resource allocation is restricted within a single band, the frequency diversity gain cannot be obtained or the obtained frequency diversity gain is limited.

[0188] Similarly, in order to obtain better frequency diversity gain and anti-interference effect, the downlink transmission can also adopt repeated transmission between frequency domain units, and different repeated transmissions of a transmission can be carried out in different bands. At the same time, since the number of resource blocks (RBs) allocated for PDSCH is usually relatively large, when performing repeated transmission, the base station ensures that there are sufficient RBs for PDSCH transmission in the frequency domain unit where each repeated transmission configured or indicated by it is located, or when the UE determines a certain frequency domain unit according to the configuration or indication of the base station, if the frequency domain resources included in this frequency domain unit cannot meet the PDSCH transmission requirements, the UE does not perform repeated transmission or searches for another frequency domain unit that meets the requirements for transmission.

[0189] Embodiment 3

[0190] Figure 18 It is the tenth schematic diagram of the frequency domain unit index where each repeated transmission of PUCCH transmission provided by the embodiment of the present application is located

[0191] as follows Figure 18 As shown, for a PUCCH / PUSCH transmission, the UE determines in BWP0 according to the base station configuration / indication

[0192] The first retransmission is transmitted, and the second retransmission is transmitted in BWP2. However, PUCCH / PUSCH cannot be transmitted at the time-frequency domain position corresponding to the second retransmission. As shown in Figure 18, if the symbol position where the PUCCH / PUSCH is located is configured as a DL symbol, then in one embodiment, the UE cancels the inter-frequency-domain unit retransmission, and transmits the first retransmission and the second retransmission in BWP0 (the second retransmission does not perform inter-frequency-domain unit frequency hopping transmission); in one embodiment, the UE switches the second retransmission to another frequency domain unit for transmission according to a predefined rule, for example, transmits the second retransmission on the active BWP with the largest interval from the first retransmission ( Figure 18 in this case, it is BWP1); in another embodiment, the UE cancels the transmission of the second retransmission.

[0193] In the retransmission method provided by the embodiments of the present application, the execution subject may be a retransmission device. In the embodiments of the present application, taking the retransmission device executing the retransmission method as an example, the retransmission device provided by the embodiments of the present application is described.

[0194] Figure 19 It is a schematic structural diagram of the retransmission device provided by the embodiments of the present application. As Figure 19 shown, the retransmission device 1900 includes a first determination module 1901 and a first transmission module 1902; wherein,

[0195] The first determination module 1901 is used for the terminal to determine the frequency domain unit where each of at least two retransmissions of the first transmission is located;

[0196] The first transmission module 1902 is used for the terminal to perform transmission on the frequency domain unit where at least one of the at least two retransmissions is located based on the retransmission method.

[0197] The retransmission device provided by the embodiments of the present application determines the frequency domain unit where each of at least two retransmissions of the first transmission is located, and performs transmission on the frequency domain unit where at least one of the at least two retransmissions is located based on the retransmission method, so as to realize the repeated transmission of the first transmission on different frequency domain units, and further be able to obtain a larger frequency diversity gain and improve the performance of the communication system.

[0198] Optionally, the retransmission method includes at least one of the following:

[0199] The first retransmission method means that the terminal transmits the at least two retransmissions of the first transmission on the same frequency domain unit in different time units;

[0200] The second retransmission mode indicates that the terminal transmits the at least two retransmissions of the first transmission on different frequency domain units in different time units;

[0201] The third retransmission mode indicates that the terminal transmits the at least two retransmissions of the first transmission on different frequency domain units in the same time unit;

[0202] The fourth retransmission mode indicates that the terminal first transmits according to the frequency domain retransmission mode and then according to the time domain retransmission mode on different frequency domain units corresponding to different time units or on different frequency domain units corresponding to different time units for the at least two retransmissions of the first transmission.

[0203] Optionally, the retransmission device 1900 further includes:

[0204] A first receiving module, configured to receive high-layer signaling or dynamic signaling, where the high-layer signaling is used to configure the retransmission mode, and the dynamic signaling is used to indicate the retransmission mode.

[0205] Optionally, the first determining module 1901 is specifically configured to:

[0206] Determine the frequency domain unit where each retransmission of the at least two retransmissions of the first transmission is located based on at least one of the following:

[0207] A predefined rule for determining the frequency domain unit where at least one retransmission of the at least two retransmissions is located;

[0208] Target information for indicating the frequency domain unit where at least one retransmission of the at least two retransmissions is located.

[0209] Optionally, the target information includes at least one of the following:

[0210] First information for indicating the frequency domain unit where each retransmission of the at least two retransmissions is located;

[0211] Second information for indicating the frequency domain unit index of the first retransmission;

[0212] A first frequency domain unit offset for indicating the offset or minimum offset of the frequency domain unit index where each retransmission starting from the second retransmission is located relative to the frequency domain unit index of the first retransmission, or the offset or minimum offset relative to the frequency domain unit index of the previous retransmission;

[0213] The first frequency-domain unit offset list; the first frequency-domain unit offset list includes at least one second frequency-domain unit offset, and the second frequency-domain unit offset is used to indicate the offset or the minimum offset of the frequency-domain unit index where each repeated transmission starting from the second repeated transmission is located relative to the frequency-domain unit index where the first repeated transmission is located;

[0214] The second frequency-domain unit offset list; the second frequency-domain unit offset list includes at least one third frequency-domain unit offset, and the third frequency-domain unit offset is used to indicate the offset or the minimum offset of the frequency-domain unit index where each repeated transmission starting from the second repeated transmission is located relative to the frequency-domain unit index where the previous repeated transmission is located;

[0215] The first frequency-domain unit list, which is used to indicate the frequency-domain unit index where each repeated transmission starting from the second repeated transmission is located;

[0216] The second frequency-domain unit list, which is used to indicate the frequency-domain unit index where each repeated transmission in the at least two repeated transmissions is located;

[0217] The repeated transmission pattern, which is used to indicate the frequency-domain unit where each repeated transmission in the at least two repeated transmissions is located.

[0218] Optionally, the repeated transmission device 1900 further includes:

[0219] The second receiving module, which receives the high-layer signaling or the dynamic signaling sent by the network-side device, where the high-layer signaling is used to configure the target information, and the dynamic signaling is used to indicate the target information.

[0220] Optionally, the first determining module 1901 is specifically used for any one of the following:

[0221] Based on the frequency-domain unit index where the first repeated transmission is located and the first frequency-domain unit offset, determine the frequency-domain unit index where the hth repeated transmission is located; where h is an integer greater than 1;

[0222] Based on the frequency-domain unit index where the mth repeated transmission is located and the first frequency-domain unit offset, determine the frequency-domain unit index where the (m + 1)th repeated transmission is located; where m is an integer greater than 0;

[0223] Based on the frequency-domain unit index where the first repeated transmission is located and the ith second frequency-domain unit offset in the first frequency-domain unit offset list, determine the frequency-domain unit index where the (i + 1)th repeated transmission is located; where i is a positive integer;

[0224] Determine the frequency domain unit index where the (g + 1)-th repeated transmission is located based on the frequency domain unit index where the g-th repeated transmission is located and the g-th third frequency domain offset in the second frequency domain offset list; where g is a positive integer.

[0225] Optionally, the repeated transmission device 1900 further includes:

[0226] A second transmission module, configured to perform transmission according to at least one of the following when the frequency domain unit where any determined repeated transmission is located is unavailable:

[0227] The terminal cancels the any repeated transmission;

[0228] The terminal defers the any repeated transmission to the next available frequency domain unit for transmission;

[0229] The terminal defers the any repeated transmission to the available frequency domain unit corresponding to the next available time unit for transmission.

[0230] Optionally, the repeated transmission device 1900 further includes:

[0231] A second determination module, configured to, when the frequency domain unit index obtained based on the first frequency domain offset, the second frequency domain offset, or the third frequency domain offset is greater than the maximum index among multiple configured, activated, or available frequency domain units, or the frequency of the frequency domain unit is greater than the maximum frequency among multiple configured, activated, or available frequency domain units, determine the frequency domain unit index where each repeated transmission starting from the second repeated transmission is located by using a wrap around or modulo operation.

[0232] Optionally, the first determination module 1901 is specifically configured to perform any one of the following:

[0233] Determine the frequency domain unit where each of the at least two repeated transmissions of the first transmission is located in the order of the frequency domain unit indices in the first frequency domain unit list or the second frequency domain unit list.

[0234] Optionally, the repeated transmission device 1900 further includes:

[0235] A third determination module, configured to cancel the repeated transmission corresponding to the first target frequency domain unit when the first target frequency domain unit determined in the order of the frequency domain unit indices in the first frequency domain unit list or the second frequency domain unit list is unavailable;

[0236] Or,

[0237] In the case where the second target frequency-domain unit determined in the order of the frequency-domain unit indices in the first frequency-domain unit list or the second frequency-domain unit list is unavailable, sequentially proceed to the next frequency-domain unit of the second target frequency-domain unit until the determined frequency-domain unit is available or until the last frequency-domain unit in the first frequency-domain unit list is reached.

[0238] Optionally, the retransmission device 1900 further includes any one of the following:

[0239] A fourth determination module, configured to, when the number M of frequency-domain units in the first frequency-domain unit list is greater than or equal to (N - 1) or the number M of frequency-domain units in the second frequency-domain unit list is greater than or equal to the number of retransmission times N, determine the first N - 1 frequency-domain unit indices in the first frequency-domain unit list as the frequency-domain unit indices where each retransmission starting from the second retransmission is located, or determine the first N frequency-domain unit indices in the second frequency-domain unit list as the frequency-domain unit indices where each retransmission in the at least two retransmissions is located; the M is a positive integer, and the N is the number of retransmission times configured or indicated for the first transmission;

[0240] A fifth determination module, configured to, when the number M of frequency-domain units in the first frequency-domain unit list is less than (N - 1), for each retransmission before the (M + 2)-th retransmission, sequentially determine the M frequency-domain unit indices in the first frequency-domain unit list as the frequency-domain unit indices where the second retransmission to the (M + 1)-th retransmission are located; for each retransmission starting from the (M + 2)-th retransmission, starting from the first frequency-domain unit among the M frequency-domain units in the first frequency-domain unit list in a cyclic manner, or starting from the last frequency-domain unit or the second-to-last frequency-domain unit among the M frequency-domain units in the first frequency-domain unit list in a reverse cyclic manner, determine the frequency-domain unit indices where each retransmission starting from the (M + 2)-th retransmission is located; the M is a positive integer, and the N is the number of retransmission times configured or indicated for the first transmission;

[0241] A sixth determination module, configured to, when the number M of frequency domain units in the second frequency domain unit list is less than N, for each retransmission before the (M + 1)-th retransmission, sequentially determine the M frequency domain unit indices in the second frequency domain unit list as the frequency domain unit indices where the first to M-th retransmissions are located; for each retransmission starting from the (M + 1)-th retransmission, starting from the first frequency domain unit among the M frequency domain units in the second frequency domain unit list in a cyclic manner, and from the last frequency domain unit or the second last frequency domain unit among the M frequency domain units in the first frequency domain unit list in a reverse cyclic manner, determine the frequency domain unit indices where each retransmission starting from the (M + 1)-th retransmission is located; where M is a positive integer and N is the number of retransmissions configured or indicated for the first transmission.

[0242] Optionally, the retransmission device 1900 further includes

[0243] A fallback module, configured to, when only one of the at least two retransmissions of the first transmission has available, active, or the number of available frequency domain units is less than a first value for the frequency domain units, fallback from the frequency domain unit - to - frequency domain unit retransmission mode to a non - retransmission mode or a non - frequency domain unit - to - frequency domain unit retransmission mode.

[0244] Optionally, the first value is determined based on at least one of the following:

[0245] The maximum number of retransmissions;

[0246] Network indication;

[0247] Pre - defined by the protocol.

[0248] Optionally, the frequency domain unit being available includes at least one of the following:

[0249] The frequency domain unit is activated or in an active state;

[0250] The transmission direction configured or indicated for the time domain position corresponding to the frequency domain unit is the same as that of the first transmission;

[0251] The frequency domain resources of the first transmission are within the available resources of the frequency domain unit.

[0252] The repeated transmission device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than terminals. Exemplarily, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0253] The repeated transmission device provided in the embodiments of the present application can implement Figures 3 to 18 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein again.

[0254] The embodiments of the present application further provide a terminal, including a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the steps in the method embodiments as Figure 3 shown. This terminal embodiment corresponds to the above terminal-side method embodiments. Each implementation process and implementation manner of the above method embodiments can be applied to this terminal embodiment and can achieve the same technical effects. Specifically, Figure 20 FIG. is a schematic hardware structure diagram of a terminal for implementing the embodiments of the present application.

[0255] The terminal 2000 includes, but is not limited to, at least some components such as a radio frequency unit 2001, a network module 2002, an audio output unit 2003, an input unit 2004, a sensor 2005, a display unit 2006, a user input unit 2007, an interface unit 2008, a memory 2009, and a processor 2010.

[0256] Those skilled in the art can understand that the terminal 2000 may further include a power source (such as a battery) for supplying power to each component. The power source may be logically connected to the processor 2010 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 20 The terminal structure shown in FIG. does not limit the terminal. The terminal may include more or fewer components than shown in the figure, or combine some components, or have different component arrangements, which are not described herein again.

[0257] It should be understood that in the embodiments of the present application, the input unit 2004 may include a Graphics Processing Unit (GPU) 20041 and a microphone 20042. The graphics processing unit 20041 processes the image data of static pictures or videos obtained by an image capturing device (such as a camera) in the video capture mode or the image capture mode. The display unit 2006 may include a display panel 20061, and the display panel 20061 may be configured in the form of, for example, a liquid crystal display, an organic light emitting diode, etc. The user input unit 2007 includes at least one of a touch panel 20071 and other input devices 20072. The touch panel 20071 is also referred to as a touch screen. The touch panel 20071 may include two parts: a touch detection device and a touch controller. The other input devices 20072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, which will not be elaborated herein.

[0258] In the embodiments of the present application, after receiving downlink data from a network-side device, the radio frequency unit 2001 may transmit it to the processor 2010 for processing; in addition, the radio frequency unit 2001 may send uplink data to the network-side device. Generally, the radio frequency unit 2001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0259] The memory 2009 can be used to store software programs or instructions as well as various data. The memory 2009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area can store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 2009 can include volatile memory or non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synch link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 2009 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0260] The processor 2010 may include one or at least two processing units; optionally, the processor 2010 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor may not be integrated into the processor 2010 either.

[0261] Among them, the processor 2010 is used to determine the frequency domain unit where each of at least two repeated transmissions of the first transmission is located; based on the repeated transmission mode, perform transmission on the frequency domain unit where at least one of the at least two repeated transmissions is located.

[0262] The terminal determines the frequency-domain units where each of at least two repeated transmissions of the first transmission is located; based on the repeated transmission mode, the terminal can perform transmissions on the frequency-domain units where at least one of the at least two repeated transmissions is located, enabling the first transmission to be repeatedly transmitted on different frequency-domain units, thereby obtaining a relatively large frequency diversity gain and improving the performance of the communication system.

[0263] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment can refer to the relevant descriptions of the repeated transmission method in the method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0264] The embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it implements each process of the above-mentioned repeated transmission method embodiment and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0265] Among them, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc. In some examples, the readable storage medium can be a non-transitory readable storage medium.

[0266] The embodiment of the present application further provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement each process of the above-mentioned repeated transmission method embodiment and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0267] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0268] The embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by a processor at least once to implement each process of the above-mentioned repeated transmission method embodiment and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0269] It should be noted that in this text, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also other elements not explicitly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0270] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus the necessary general hardware platforms, and of course, they can also be implemented by hardware. The computer software products are stored in storage media (such as ROM, RAM, magnetic disks, optical discs, etc.) and include several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0271] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. These embodiments are all within the protection scope of the present application.

Claims

1. A repeated transmission method, characterized in that, Including: The terminal determines the frequency domain units where each of at least two repeated transmissions of a first transmission is located; Based on the repeated transmission mode, the terminal performs transmission on the frequency domain units where at least one of the at least two repeated transmissions is located.

2. The repeated transmission method according to claim 1, wherein The repeated transmission mode includes at least one of the following: The first repeated transmission mode, indicating that the terminal transmits the at least two repeated transmissions of the first transmission on the same frequency domain units in different time units; The second repeated transmission mode, indicating that the terminal transmits the at least two repeated transmissions of the first transmission on different frequency domain units in different time units; The third repeated transmission mode, indicating that the terminal transmits the at least two repeated transmissions of the first transmission on different frequency domain units in the same time unit; The fourth repeated transmission mode, indicating that the terminal first transmits the at least two repeated transmissions of the first transmission in a frequency domain repeated transmission mode and then in a time domain repeated transmission mode on different frequency domain units corresponding to the same time unit or on different frequency domain units corresponding to different time units.

3. The repeated transmission method according to claim 1 or 2, characterized in that, The method further includes: The terminal receives high-layer signaling or dynamic signaling, where the high-layer signaling is used to configure the repeated transmission mode, and the dynamic signaling is used to indicate the repeated transmission mode.

4. The repeated transmission method according to any one of claims 1 to 3, characterized in that, The terminal determines the frequency domain units where each of at least two repeated transmissions of a first transmission is located, including: The terminal determines the frequency domain units where each of the at least two repeated transmissions of the first transmission is located based on at least one of the following: A predefined rule for determining the frequency domain units where at least one of the at least two repeated transmissions is located; Target information for indicating the frequency domain units where at least one of the at least two repeated transmissions is located.

5. The repeated transmission method according to claim 4, characterized in that, The target information includes at least one of the following: First information for indicating the frequency domain units where each of the at least two repeated transmissions is located; Second information for indicating the frequency domain unit index of the first repeated transmission; A first frequency domain unit offset for indicating the offset or minimum offset of the frequency domain unit index where each repeated transmission starting from the second repeated transmission is located relative to the frequency domain unit index of the first repeated transmission, or the offset or minimum offset relative to the frequency domain unit index of the previous repeated transmission; A first frequency domain unit offset list; the first frequency domain unit offset list includes at least one second frequency domain unit offset for indicating the offset or minimum offset of the frequency domain unit index where each repeated transmission starting from the second repeated transmission is located relative to the frequency domain unit index of the first repeated transmission; A second frequency domain unit offset list; the second frequency domain unit offset list includes at least one third frequency domain unit offset for indicating the offset or minimum offset of the frequency domain unit index where each repeated transmission starting from the second repeated transmission is located relative to the frequency domain unit index of the previous repeated transmission; A first frequency domain unit list, used to indicate the frequency domain unit index where each retransmission starting from the second retransmission is located; A second frequency domain unit list, used to indicate the frequency domain unit index where each retransmission in the at least two retransmissions is located; A retransmission pattern, used to indicate the frequency domain unit where each retransmission in the at least two retransmissions is located.

6. The repeated transmission method according to claim 5, wherein The method further includes: The terminal receives high-layer signaling or dynamic signaling sent by the network-side device, where the high-layer signaling is used to configure the target information, and the dynamic signaling is used to indicate the target information.

7. The repeated transmission method according to claim 5 or 6, characterized in that, The terminal determines the frequency domain unit where each retransmission in at least two retransmissions of the first transmission is located, including any one of the following: The terminal determines the frequency domain unit index where the h-th retransmission is located based on the frequency domain unit index where the first retransmission is located and the first frequency domain unit offset; where h is an integer greater than 1; The terminal determines the frequency domain unit index where the (m + 1)-th retransmission is located based on the frequency domain unit index where the m-th retransmission is located and the first frequency domain unit offset; where m is an integer greater than 0; The terminal determines the frequency domain unit index where the (i + 1)-th retransmission is located based on the frequency domain unit index where the first retransmission is located and the i-th second frequency domain offset in the first frequency domain offset list; where i is a positive integer; The terminal determines the frequency domain unit index where the (g + 1)-th retransmission is located based on the frequency domain unit index where the g-th retransmission is located and the g-th third frequency domain offset in the second frequency domain offset list; where g is a positive integer.

8. The repeated transmission method according to claim 7, wherein The method further includes: In the case where the frequency domain unit where any determined retransmission is located is unavailable, the terminal performs transmission according to at least one of the following: The terminal cancels the any retransmission; The terminal switches the any retransmission to the next available frequency domain unit for transmission; The terminal defers the any retransmission to the available frequency domain unit corresponding to the next available time unit for transmission.

9. The repeated transmission method according to any one of claims 5 to 8, characterized in that, The method further includes: In the case where the frequency domain unit index obtained based on the first frequency domain offset, the second frequency domain offset, or the third frequency domain offset is greater than the maximum index among the configured, activated, or available multiple frequency domain units, or the frequency of the frequency domain unit is greater than the maximum frequency among the configured, activated, or available multiple frequency domain units, the terminal determines the frequency domain unit index where each retransmission starting from the second retransmission is located by using wraparound or modulo operation.

10. The repeated transmission method according to any one of claims 5 to 9, characterized in that, The terminal determines the frequency domain unit where each retransmission in at least two retransmissions of the first transmission is located, including: The terminal determines the frequency domain unit where each retransmission in the at least two retransmissions of the first transmission is located in the order of the frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list.

11. The repeated transmission method according to claim 10, characterized in that, The method further includes: When the first target frequency domain unit determined in the order of the frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list is unavailable, the terminal cancels the retransmission corresponding to the first target frequency domain unit; Or, When the second target frequency domain unit determined in the order of the frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list is unavailable, the terminal sequentially moves to the next frequency domain unit of the second target frequency domain unit until the determined frequency domain unit is available or until the last frequency domain unit in the first frequency domain unit list.

12. The repeated transmission method according to claim 10, characterized in that, The method further includes any one of the following: When the number of frequency domain units M in the first frequency domain unit list is greater than or equal to (N - 1) or the number of frequency domain units M in the second frequency domain unit list is greater than or equal to N, the terminal determines the indexes of the first N - 1 frequency domain units in the first frequency domain unit list as the frequency domain unit indexes where each retransmission starting from the second retransmission is located, or determines the indexes of the first N frequency domain units in the second frequency domain unit list as the frequency domain units where each retransmission in the at least two retransmissions is located, in the order of the frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list; M is a positive integer, and N is the number of retransmissions configured or indicated for the first transmission; When the number of frequency domain units M in the first frequency domain unit list is less than (N - 1), for each retransmission before the (M + 2)-th retransmission, the terminal determines the indexes of the M frequency domain units in the first frequency domain unit list as the frequency domain unit indexes where the second retransmission to the (M + 1)-th retransmission are located; for each retransmission starting from the (M + 2)-th retransmission, the terminal cycles from the first frequency domain unit among the M frequency domain units in the first frequency domain unit list, or cycles in reverse from the last frequency domain unit or the second - last frequency domain unit among the M frequency domain units in the first frequency domain unit list, to determine the frequency domain unit indexes where each retransmission starting from the (M + 2)-th retransmission is located; M is a positive integer, and N is the number of retransmissions configured or indicated for the first transmission; When the number M of frequency domain units in the second frequency domain unit list is less than N, for each retransmission before the (M + 1)-th retransmission, the terminal sequentially determines the M frequency domain unit indices in the second frequency domain unit list as the frequency domain unit indices where the first to M-th retransmissions are located; for each retransmission starting from the (M + 1)-th retransmission, the terminal cycles starting from the first frequency domain unit among the M frequency domain units in the second frequency domain unit list, and cycles backward from the last frequency domain unit or the second last frequency domain unit among the M frequency domain units in the first frequency domain unit list, to determine the frequency domain unit indices where each retransmission starting from the (M + 1)-th retransmission is located. M is a positive integer, and N is the number of retransmissions configured or indicated for the first transmission.

13. The repeated transmission method according to any one of claims 1 to 12, characterized in that The method further includes: When only one of the at least two retransmissions of the first transmission has available frequency domain units, or the number of available frequency domain units is less than a first value, the terminal falls back from the frequency domain unit inter-retransmission mode to the non-retransmission mode or the non-frequency domain unit inter-retransmission mode.

14. The repeated transmission method according to claim 13, characterized in that, The first value is determined based on at least one of the following: The maximum number of retransmissions; Network indication; Predefined by the protocol.

15. The repeated transmission method according to any one of claims 1 to 14, characterized in that, The available frequency domain units include at least one of the following: The frequency domain unit is activated or in an active state; The transmission direction configured or indicated for the frequency domain unit at the time domain position corresponding to the first transmission is the same as that of the first transmission; The frequency domain resources of the first transmission are within the available resource range of the frequency domain unit.

16. A repeated transmission device, characterized in that, It includes: A first determination module, configured to determine, for the terminal, the frequency domain unit where each of the at least two retransmissions of the first transmission is located; A first transmission module, configured to enable the terminal to perform transmission on the frequency domain unit where at least one of the at least two retransmissions is located based on the retransmission mode.

17. The repeated transmission device according to claim 16, characterized in that, The retransmission mode includes at least one of the following: A first retransmission mode, indicating that the terminal transmits the at least two retransmissions of the first transmission on the same frequency domain unit at different time units; A second retransmission mode, indicating that the terminal transmits the at least two retransmissions of the first transmission on different frequency domain units at different time units; A third retransmission mode, indicating that the terminal transmits the at least two retransmissions of the first transmission on different frequency domain units at the same time unit; A fourth retransmission mode, indicating that the terminal first transmits the at least two retransmissions of the first transmission in a frequency domain retransmission mode, and then in a time domain retransmission mode, on different frequency domain units corresponding to the same time unit or on different frequency domain units corresponding to different time units.

18. The repeated transmission device according to claim 16 or 17, characterized in that The device further includes: A receiving module, configured to receive high-layer signaling or dynamic signaling, where the high-layer signaling is used to configure the retransmission mode, and the dynamic signaling is used to indicate the retransmission mode.

19. The repeated transmission device according to any one of claims 16 to 18, characterized in that, The first determination module is specifically configured to: Determine the frequency domain unit where each of the at least two repeated transmissions of the first transmission is located based on at least one of the following: A predefined rule for determining the frequency domain unit where at least one of the at least two repeated transmissions is located; Target information for indicating the frequency domain unit where at least one of the at least two repeated transmissions is located.

20. The repeated transmission device according to claim 19, characterized in that, The target information includes at least one of the following: First information for indicating the frequency domain unit where each of the at least two repeated transmissions is located; Second information for indicating the index of the frequency domain unit where the first repeated transmission is located; A first frequency domain unit offset for indicating the offset or minimum offset of the index of the frequency domain unit where each repeated transmission starting from the second repeated transmission is located relative to the index of the frequency domain unit where the first repeated transmission is located, or the offset or minimum offset relative to the index of the frequency domain unit where the previous repeated transmission is located; A first frequency domain unit offset list; the first frequency domain unit offset list includes at least one second frequency domain unit offset, and the second frequency domain unit offset is used to indicate the offset or minimum offset of the index of the frequency domain unit where each repeated transmission starting from the second repeated transmission is located relative to the index of the frequency domain unit where the first repeated transmission is located; A second frequency domain unit offset list; the second frequency domain unit offset list includes at least one third frequency domain unit offset, and the third frequency domain unit offset is used to indicate the offset or minimum offset of the index of the frequency domain unit where each repeated transmission starting from the second repeated transmission is located relative to the index of the frequency domain unit where the previous repeated transmission is located; A first frequency domain unit list for indicating the index of the frequency domain unit where each repeated transmission starting from the second repeated transmission is located; A second frequency domain unit list for indicating the index of the frequency domain unit where each of the at least two repeated transmissions is located; A repeated transmission pattern for indicating the frequency domain unit where each of the at least two repeated transmissions is located.

21. The repeated transmission device according to claim 20, wherein The first determination module is further configured to: Determine the index of the frequency domain unit where the hth repeated transmission is located based on the index of the frequency domain unit where the first repeated transmission is located and the first frequency domain unit offset; where h is an integer greater than 1; Determine the index of the frequency domain unit where the (m + 1)th repeated transmission is located based on the index of the frequency domain unit where the mth repeated transmission is located and the first frequency domain unit offset; where m is an integer greater than 0; Determine the index of the frequency domain unit where the (i + 1)th repeated transmission is located based on the index of the frequency domain unit where the first repeated transmission is located and the ith second frequency domain unit offset in the first frequency domain unit offset list; where i is a positive integer; Determine the index of the frequency domain unit where the (g + 1)th repeated transmission is located based on the index of the frequency domain unit where the gth repeated transmission is located and the gth third frequency domain unit offset in the second frequency domain unit offset list; where g is a positive integer.

22. The repeated transmission device according to claim 21, wherein The device further includes: A second transmission module, configured to perform transmission according to at least one of the following when a frequency domain unit where any determined repeated transmission is located is unavailable: The terminal cancels the any repeated transmission; The terminal defers the any repeated transmission to a next available frequency domain unit for transmission; The terminal defers the any repeated transmission to a frequency domain unit corresponding to a next available time unit for transmission.

23. The repeated transmission device according to any one of claims 20 to 22, characterized in that, The apparatus further comprises: A second determination module, configured to determine a frequency domain unit index where each repeated transmission starting from the second repeated transmission is located by using a wrap around or modulo operation when a frequency domain unit index obtained based on the first frequency domain unit offset, the second frequency domain unit offset, or the third frequency domain unit offset is greater than a maximum index among a plurality of configured, activated, or available frequency domain units, or when a frequency domain unit frequency is greater than a maximum frequency among the plurality of configured, activated, or available frequency domain units.

24. The repeated transmission device according to any one of claims 20 to 23, characterized in that, The first determination module is further configured to: Determine a frequency domain unit where each of the at least two repeated transmissions of the first transmission is located in an order of frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list.

25. The repeated transmission device according to claim 24, characterized in that, The apparatus further comprises: A cancellation module, configured to cancel a repeated transmission corresponding to a first target frequency domain unit when the first target frequency domain unit determined in an order of frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list is unavailable; Or, A third determination module, configured to when a second target frequency domain unit determined in an order of frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list is unavailable, the terminal sequentially goes to a next frequency domain unit of the second target frequency domain unit until a determined frequency domain unit is available or until a last frequency domain unit in the first frequency domain unit list.

26. The repeated transmission device according to claim 24, characterized in that, The apparatus further comprises any one of the following: A fourth determination module, configured to when a number M of frequency domain units in the first frequency domain unit list is greater than or equal to (N - 1) or when the number M of frequency domain units in the second frequency domain unit list is greater than or equal to N, the terminal determines, in an order of frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list, the first N - 1 frequency domain unit indexes in the first frequency domain unit list as frequency domain unit indexes where each repeated transmission starting from the second repeated transmission is located, or determines the first N frequency domain unit indexes in the second frequency domain unit list as frequency domain unit indexes where each of the at least two repeated transmissions is located; the M is a positive integer, and the N is a number of repeated transmissions for which the first transmission is configured or indicated; A fifth determination module, configured to, when the number M of frequency domain units in the first list of frequency domain units is less than (N - 1), for each retransmission before the (M + 2)-th retransmission, the terminal sequentially determines the M frequency domain unit indices in the first list of frequency domain units as the frequency domain unit indices where the second retransmission to the (M + 1)-th retransmission are located; for each retransmission starting from the (M + 2)-th retransmission, the terminal cycles from the first frequency domain unit among the M frequency domain units in the first list of frequency domain units, or cycles in reverse from the last frequency domain unit among the M frequency domain units in the first list of frequency domain units or the second-to-last frequency domain unit among the M frequency domain units in the first list of frequency domain units, to determine the frequency domain unit indices where each retransmission starting from the (M + 2)-th retransmission is located; M is a positive integer, and N is the number of retransmissions configured or indicated for the first transmission; A sixth determination module, configured to, when the number M of frequency domain units in the second list of frequency domain units is less than N, for each retransmission before the (M + 1)-th retransmission, the terminal sequentially determines the M frequency domain unit indices in the second list of frequency domain units as the frequency domain unit indices where the first retransmission to the M-th retransmission are located; for each retransmission starting from the (M + 1)-th retransmission, the terminal cycles from the first frequency domain unit among the M frequency domain units in the second list of frequency domain units, or cycles in reverse from the last frequency domain unit among the M frequency domain units in the first list of frequency domain units or the second-to-last frequency domain unit among the M frequency domain units in the first list of frequency domain units, to determine the frequency domain unit indices where each retransmission starting from the (M + 1)-th retransmission is located; M is a positive integer, and N is the number of retransmissions configured or indicated for the first transmission.

27. The repeated transmission device according to any one of claims 16 to 25, characterized in that The apparatus further includes: When only one of the at least two retransmissions of the first transmission has available frequency domain units, or the number of available frequency domain units is less than a first value, the terminal falls back from the frequency domain unit inter-retransmission mode to the non-retransmission mode or the non-frequency domain unit inter-retransmission mode.

28. A terminal, characterized in that, It includes a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the retransmission method according to any one of claims 1 to 15 are implemented.

29. A readable storage medium, characterized in that, The program or instruction is stored on the readable storage medium, and when the program or instruction is executed by the processor, the steps of the retransmission method according to any one of claims 1 to 15 are implemented.

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