Repetition transmission method and apparatus

Abstract

The present application belongs to the technical field of communications. Disclosed are a repetition transmission method and apparatus. The repetition transmission method in the embodiments of the present application comprises: a terminal determining a frequency-domain unit where each of at least two repetition transmissions of a first transmission occurs; and in a repetition transmission mode, the terminal performing transmission on the frequency-domain unit where at least one of the at least two repetition transmissions occurs.

Description

Repeated transmission method and device

[0001] Cross-references

[0002] The present disclosure claims priority to Chinese patent application number 2024100159721, filed on January 4, 2024, entitled “Repeated Transmission Method and Apparatus,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a repeated transmission method and device. Background Art

[0004] In related technologies, uplink and downlink transmissions are limited to a bandwidth part (BWP) within a cell, where the BWP is a continuous section of frequency domain resources. To increase the reliability and robustness of uplink transmissions and improve uplink transmission performance, uplink Physical Uplink Control Channel (PUCCH) / Physical Uplink Shared Channel (PUSCH) / Sounding Reference Signal (SRS) transmissions support multiple repetitions, meaning that uplink transmissions are configured or indicated for two or at least two repetitions, each at the same BWP. To achieve frequency diversity gain and anti-interference effects, uplink transmissions can also be transmitted at different frequency domain locations within a BWP during repetition (also known as frequency hopping transmission).

[0005] However, when a cell contains one or more discontinuous frequency domain resources, there is no corresponding solution for repeated transmission of uplink and downlink channels or signals. Therefore, how to achieve repeated transmission of uplink and downlink channels or signals is an urgent problem that needs to be solved. Summary of the Invention

[0006] The embodiments of the present application provide a repeated transmission method and apparatus, which can solve the problem of how to achieve repeated transmission of uplink and downlink channels or signals when a cell contains one or more discontinuous frequency domain resources.

[0007] In a first aspect, a repeated transmission method is provided, which is performed by a terminal. The method includes:

[0008] The terminal determines a frequency domain unit in which each repeated transmission in at least two repeated transmissions of the first transmission is located;

[0009] The terminal performs transmission on a frequency domain unit where at least one of the at least two repeated transmissions is located based on a repeated transmission mode.

[0010] In a second aspect, a repeated transmission device is provided, comprising:

[0011] A first determining module, configured for a terminal to determine a frequency domain unit in which each of at least two repeated transmissions of a first transmission is located;

[0012] The first transmission module is used for the terminal to transmit based on the repeated transmission mode on the frequency domain unit where at least one repeated transmission in the at least two repeated transmissions is located.

[0013] In a third aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0014] In a fourth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is used to determine the frequency domain unit where each of at least two repeated transmissions of a first transmission is located, and the communication interface is used to transmit on the frequency domain unit where at least one of the at least two repeated transmissions is located based on the repeated transmission mode.

[0015] In a fifth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0016] In a sixth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to run a program or instruction to implement the method described in the first aspect.

[0017] In a seventh aspect, a computer program / program product is provided, wherein 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 as described in the first aspect.

[0018] In an embodiment of the present application, the terminal determines the frequency domain unit in which each of the at least two repeated transmissions of the first transmission is located; the terminal transmits on the frequency domain unit in which at least one repeated transmission in the at least two repeated transmissions is located based on the repeated transmission method, so as to realize repeated transmission of the first transmission on different frequency domain units, that is, on one or more discontinuous frequency domain resources, thereby obtaining a larger frequency diversity gain or increasing the anti-interference capability of the uplink transmission, reducing the transmission delay of the first transmission, and improving the performance of the communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of a wireless communication system applicable to an embodiment of the present application;

[0020] FIG2 is a schematic diagram of a base station providing a related art for implementing bandwidth changes by activating different BWPs for a UE;

[0021] FIG3 is a schematic diagram of a flow chart of a repeated transmission method according to an embodiment of the present application;

[0022] FIG4 is a schematic diagram of different repeated transmissions at the same frequency domain position provided by an embodiment of the present application;

[0023] FIG5 is a schematic diagram of different frequency domain positions of different repeated transmissions within the same frequency domain unit provided by an embodiment of the present application;

[0024] FIG6 is a schematic diagram of different frequency domain units corresponding to different time positions of different repeated transmissions provided in an embodiment of the present application;

[0025] FIG7 is a schematic diagram of different repeated transmissions at different frequency domain units at the same time position provided by an embodiment of the present application;

[0026] FIG8 is a schematic diagram of time-frequency domain repeated transmission provided in an embodiment of the present application;

[0027] FIG9 is a schematic diagram of one of the frequency domain unit indexes where each repeated transmission of the PUCCH transmission is located according to an embodiment of the present application;

[0028] FIG10 is a second schematic diagram of a frequency domain unit index where each repeated transmission of a PUCCH transmission is located according to an embodiment of the present application;

[0029] FIG11 is a third schematic diagram of a frequency domain unit index where each repeated transmission of a PUCCH transmission is located according to an embodiment of the present application;

[0030] FIG12 is a fourth schematic diagram of a frequency domain unit index where each repeated transmission of a PUCCH transmission is located according to an embodiment of the present application;

[0031] FIG13 is a fifth schematic diagram of a frequency domain unit index where each repeated transmission of a PUCCH transmission is located according to an embodiment of the present application;

[0032] FIG14 is a sixth schematic diagram of a frequency domain unit index where each repeated transmission of a PUCCH transmission is located according to an embodiment of the present application;

[0033] FIG15 is a seventh schematic diagram of a frequency domain unit index where each repeated transmission of a PUCCH transmission is located according to an embodiment of the present application;

[0034] FIG16 is an eighth schematic diagram of a frequency domain unit index where each repeated transmission of a PUCCH transmission is located according to an embodiment of the present application;

[0035] FIG17 is a ninth schematic diagram of a frequency domain unit index for each repeated transmission of a PUCCH transmission provided in an embodiment of the present application;

[0036] FIG18 is a ninth schematic diagram of a frequency domain unit index for each repeated transmission of a PUCCH transmission provided in an embodiment of the present application;

[0037] FIG19 is a schematic structural diagram of a repeated transmission device provided in an embodiment of the present application;

[0038] FIG20 is a schematic diagram of the structure of the terminal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0040] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, 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 generally of the same type, and do not limit the number of objects, for example, the first object can be once or at least twice. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A and excluding B; Option 2: including B and excluding A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0041] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result in the instruction sent; an indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result based on the judgment result.

[0042] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but 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 the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0043] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (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 (Wearable Device), an aircraft (Flight Vehicle), a vehicle user equipment (VUE), a ship-borne device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may 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 can 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 (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0044] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0045] In order to facilitate a clearer understanding of the various embodiments of the present application, some relevant background technical knowledge is first introduced as follows.

[0046] Mobile communication systems need to adapt to increasingly diverse scenarios and service requirements. For example, key 5G scenarios include enhanced mobile broadband (eMBB), ultra-reliable and low-latency communications (URLLC), and massive machine-type communications (mMTC). These scenarios place high demands on the system for reliability, low latency, large bandwidth, and wide coverage. Terminals require different transmission bandwidths for different application scenarios. In NR, base stations can schedule terminals to transmit on different bandwidth portions based on their needs.

[0047] In NR, the network configures one or more Bandwidth Parts (BWPs) for user equipment (UE) for data transmission. BWP is a continuous resource in the frequency domain, and the base station implements dynamic bandwidth changes by activating different BWPs for the UE. Figure 2 is a schematic diagram of the base station implementing bandwidth changes by activating different BWPs for the UE provided by the related technology. As shown in Figure 2, at the first moment, the UE's traffic volume is large, and the base station activates a large bandwidth (BWP1) for the UE; at the second moment, the UE's traffic volume is small, and the base station activates a small bandwidth (BWP2) for the UE to meet basic communication needs; at the third moment, the system finds that there is large-scale frequency selective fading in the bandwidth where BWP1 is located, or that resources in the frequency range where BWP2 is located are relatively scarce, so it instructs the UE to activate a new bandwidth (BWP3).

[0048] Each BWP may correspond to different configuration parameters, including, for example, subcarrier spacing, BWP location and bandwidth, cyclic prefix (CP), and the like.

[0049] 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 allocated to International Mobile Telecommunications (IMT) in a fragmented manner, and the bandwidth of each spectrum block is relatively narrow due to competition among mobile operators. On the other hand, almost all operators in the world own 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 considerable bandwidth, all operators can benefit.

[0050] 1. PUCCH Resource Configuration

[0051] When uplink carrier aggregation (CA) is performed in NR R15, 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 in 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 switching 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 BWP through the Information element (IE) PUCCH-Configuration (Config). That is to say, each PUCCH resource is within a BWP.

[0052] NR UL transmission with repetition

[0053] In the NR system, to improve transmission reliability and expand cell coverage, uplink PUCCH or PUSCH and downlink PDCCH or PDSCH transmissions support repetition. The UE retransmits the same channel or signal over the same frequency domain resources or over different frequency domain resources of the same BWP at different times. Alternatively, if uplink PUCCH / PUSCH retransmission is configured, the UE can retransmit PUCCH or PUSCH over different frequency domain resources of a BWP at different times to achieve frequency diversity gain and interference mitigation.

[0054] In the prior art, each cell's carrier is a contiguous frequency domain resource, and transmission resources are confined to a single BWP within the cell. Each BWP's spectrum resources are contiguous, with a maximum bandwidth of 100 MHz. For fragmented spectrum, such as the large amount of sub-3 GHz spectrum, carrier aggregation (CA) is a traditional solution for operators and users to aggregate spectrum. Specifically, different contiguous spectrums are each treated as a carrier. However, existing CA mechanisms treat each carrier as an independent serving cell and assume independent deployment. Independent management of each carrier incurs unnecessary overhead and efficiency losses (e.g., independent control signaling and common signaling), which also introduces unnecessary procedures and delays (e.g., synchronization, SCell addition / release / activation / measurement / mobility). Furthermore, CA mechanisms only benefit UEs in connected mode (RRC_connected), meaning those that have established an RRC connection with the network. They do not benefit UEs in idle mode (RRC_idle / inactive), such as initial access or small data transmission (SDT).

[0055] Therefore, the introduction of flexible cells enables flexible and efficient utilization of adjacent non-contiguous spectrum from the perspectives of L1 / L2 / L3 signaling, processes, and cell management. This benefits both connected and idle UEs, improving user-perceived data rates, energy savings, system capacity, and coverage. It also simplifies network management complexity and improves energy efficiency. Furthermore, these narrow-bandwidth carriers offer limited or no frequency diversity gain.

[0056] The repeated transmission method provided in the embodiments of the present application is described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

[0057] The repeated transmission method provided in the embodiment of the present application can be applied to the scenario of repeated transmission of uplink transmission or downlink transmission between frequency domain units, and the terminal determines the frequency domain unit where each repeated transmission of at least two repeated transmissions of the first transmission is located; the terminal transmits on the frequency domain unit where at least one repeated transmission of at least two repeated transmissions is located based on the repeated transmission method, thereby realizing repeated transmission of the first transmission on different frequency domain units, that is, on one or more discontinuous frequency domain resources, thereby obtaining a larger frequency diversity gain or increasing the anti-interference capability of the uplink transmission, reducing the transmission delay of the first transmission, and improving the performance of the communication system.

[0058] FIG3 is a flow chart of a repeated transmission method provided in an embodiment of the present application. As shown in FIG3 , the method includes steps 301 to 302; wherein:

[0059] Step 301: The terminal determines a frequency domain unit in which each of at least two repeated transmissions of a first transmission is located.

[0060] It should be noted that the embodiments of the present application can be applied to scenarios where uplink or downlink transmissions are repeated between frequency domain units. The terminals include but are not limited to the types of terminals 11 listed above, and the network-side devices include but are not limited to the types of network-side devices 12 listed above, and the embodiments of the present application do not limit this.

[0061] 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, and a frequency domain unit may be a bandwidth (band), a carrier (carrier), a subband (subband), a BWP, etc. 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 in different frequency domain units. The frequency domain unit can 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 can also be identified by a band number. For simplicity, the frequency domain unit index is used for identification in this application. The method in this application can also be applied to the case where the frequency domain unit is identified by the band number.

[0062] Step 302: The terminal transmits on the frequency domain unit where at least one of the at least two repeated transmissions is located based on the repeated transmission mode.

[0063] Optionally, the terminal receives high-layer signaling or dynamic signaling, the high-layer signaling is used to configure the repeated transmission mode, and the dynamic signaling is used to indicate the repeated transmission mode.

[0064] 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 repeated transmission mode. The terminal can receive the high-layer signaling sent by the base station. Or the base station sends dynamic signaling, such as DCI, to the terminal, and the dynamic signaling is used to indicate the repeated transmission mode. The terminal can receive dynamic signaling sent by the base station. The high-layer signaling configuring the repeated transmission mode or the dynamic signaling used to indicate the repeated transmission mode may be that the base station enables the terminal to perform repeated transmission through high-layer signaling or dynamic signaling, or the base station instructs the terminal to use which repeated transmission mode for repeated transmission through high-layer signaling or dynamic signaling. The base station can flexibly configure the repeated transmission mode of the terminal according to the terminal capability, actual configuration / scheduling situation, business needs, etc.

[0065] After receiving the indication information of the repetition transmission mode, the terminal may perform transmission on the frequency domain unit where at least one repetition transmission among the determined at least two repetition transmissions is located based on the configured repetition transmission mode.

[0066] Optionally, the terminal may also determine a repetition transmission mode based on a protocol predefined or predefined rule, and transmit on a frequency domain unit where at least one of the at least two repetition transmissions is located. The time unit may be a slot or sub-slot, a symbol, a symbol set, a subframe, or a frame.

[0067] It should be noted that, when 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 domain range of the frequency domain unit, or in any symbol of the first transmission, the transmission direction of the first transmission does not match the transmission direction configured or indicated by the frequency domain unit, for example, the first transmission is an uplink transmission, and the corresponding symbol position of the frequency domain unit is configured or indicated as a downlink transmission (DL) symbol), the terminal may not transmit on the repeated transmission, wherein the terminal may cancel the repeated transmission and count it in the total number of repetitions, or the terminal cancels the repeated transmission but does not count it in the total number of repetitions. Optionally, the terminal transmits the repeated transmission on other available resources. For example, 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 cancels the transmission of the second repeated transmission and counts it in the total number of repetitions (that is, the UE only transmits one repeated transmission), or the terminal cancels the transmission of the second repeated transmission on the frequency domain unit, does not count it in the total number of repetitions (the UE transmits the second repeated transmission on other resources), and transmits a 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 in the frequency domain unit where the first repeated transmission is located.

[0068] Optionally, the repeated transmission mode includes at least one of the following:

[0069] (1) A first repetitive transmission mode indicates that the terminal transmits the at least two repetitive transmissions of the first transmission on the same frequency domain unit in different time units.

[0070] Specifically, the first repetitive transmission mode is one of the time domain repetitive transmission modes, which means that different repetitive transmissions of the first transmission are transmitted on the same frequency domain unit at different time units (ie, time positions).

[0071] It should be noted that, in FIG. 4 to FIG. 16 , the frequency domain unit is schematically represented as BWP, but the frequency domain unit may be any one of a bandwidth, a carrier, a subband, and a BWP.

[0072] Optionally, within the same frequency domain unit, different repeated transmissions can also be at the same frequency domain location or at different frequency domain locations. Figure 4 is a schematic diagram of different repeated transmissions at the same frequency domain location provided by an embodiment of the present application. As shown in Figure 4, the first repeated transmission, the second repeated transmission, the third repeated transmission, and the fourth repeated transmission are all at the same frequency domain location within BWP2. In Figure 4, Figure 5 is a schematic diagram of different repeated transmissions at different frequency domain locations within the same frequency domain unit provided by an embodiment of the present application. As shown in Figure 5, 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 locations. Repeated transmissions at different frequency domain locations within the same frequency domain unit can be simply referred to as frequency hopping time domain repeated transmission within the frequency domain unit. Different repeated transmissions do not overlap in time, but are within the same frequency domain unit in the frequency domain and may or may not overlap. Alternatively, transmitting different repeated transmissions at different frequency domain locations within a frequency domain unit means that among all repeated transmissions, there are at least two repeated transmissions at different frequency domain locations within the frequency domain unit. As shown in Figure 5, this method can be applied when a single frequency domain unit has a certain bandwidth.

[0073] (2) The second repetitive transmission mode indicates that the terminal transmits the at least two repetitive transmissions of the first transmission on different frequency domain units corresponding to different time units.

[0074] Specifically, the second repetitive transmission mode is the second time domain repetitive transmission mode, which means that the terminal transmits different repetitive transmissions of the first transmission on different frequency domain units at different time units (i.e., time positions), which can be referred to as time domain repetitive transmission with frequency hopping between frequency domain units. Different repetitive transmissions do not overlap in time, and may or may not overlap in the frequency domain. Alternatively, transmitting different repetitive transmissions on different frequency domain units means that at least two repetitive transmissions in all repetitive transmissions are in different frequency domain units. The second repetitive transmission mode can obtain a greater frequency diversity gain or anti-interference effect.

[0075] Figure 6 is a schematic diagram of different frequency domain units corresponding to different repeated transmissions at different time positions provided in an embodiment of the present application. As shown in Figure 6, the first repeated transmission is at BWP0, the second repeated transmission is at BWP2, the third repeated transmission is at BWP1, and the fourth repeated transmission is at BWP3, and different repeated transmissions are at different time positions.

[0076] (3) A third repetitive transmission mode indicates that the terminal transmits the at least two repetitive transmissions of the first transmission on different frequency domain units in the same time unit.

[0077] Specifically, the third repetitive transmission mode is a frequency domain repetitive transmission mode, which means that different repetitive transmissions of the first transmission are transmitted in different frequency domain units within the same time unit (i.e., time position). The different repetitive transmissions overlap or are the same in time, but do not overlap in the frequency domain. This repetitive transmission mode can be simply referred to as frequency domain repetitive transmission with frequency hopping between frequency domain units. The third repetitive transmission mode can achieve greater frequency diversity gain or anti-interference effect, and can reduce transmission delay.

[0078] Figure 7 is a schematic diagram of different repeated transmissions provided in different frequency domain units at the same time position in an embodiment of the present application. As shown in Figure 7, the first repeated transmission is at BWP0, the second repeated transmission is at BWP1, the third repeated transmission is at BWP2, and the fourth repeated transmission is at BWP3, and at the same time position.

[0079] (4) The fourth repetitive transmission mode indicates that the terminal first transmits the at least two repetitive transmissions of the first transmission in different frequency domain units corresponding to the same time unit or in different frequency domain units corresponding to different time units in accordance with the frequency domain repetitive transmission mode and then in accordance with the time domain repetitive transmission mode.

[0080] Specifically, the fourth repetition transmission mode is a time-frequency domain repetition transmission mode, which means that the terminal first transmits different repetitions in different frequency domain units within the same time unit according to the frequency domain repetition transmission mode. For the remaining repetitions (if any), the terminal then transmits at least two repetitions of the first transmission in different time units according to the time domain repetition transmission mode, wherein different repetitions are transmitted in different frequency domain units within a certain time unit. That is, the time-frequency domain location of each repetition of the first transmission is determined using a frequency domain priority method, wherein repetitions are first transmitted according to the frequency domain method, and then according to the time domain method. In the fourth repetition transmission mode, repetitions are first transmitted in different frequency domain units according to the frequency domain repetition transmission mode within a certain time unit. If the different frequency domain units cannot transmit all repetitions in the time unit, at least some of the remaining repetitions are transmitted in the next time unit. In this mode, the first transmission can be repetitively transmitted in one or more time units. In each time unit, if multiple frequency domain units are available for the first transmission, different repetitions can be transmitted in different frequency domain units. The fourth repetition transmission mode combines the advantages of the third repetition mode and the first repetition mode or the second repetition mode, can obtain a larger frequency diversity gain or anti-interference effect, and can reduce the transmission delay to a certain extent.

[0081] Figure 8 is a schematic diagram of time-frequency domain repeated transmissions provided by an embodiment of the present application. As shown in Figure 8 , the first repeated transmission occurs on BWP0, the second repeated transmission occurs on BWP1, the third repeated transmission occurs on BWP2, the fourth repeated transmission occurs on BWP1, the fifth repeated transmission occurs on BWP2, and the sixth repeated transmission occurs on BWP1. Repeated transmissions are first performed in the frequency domain, followed by repeated transmissions in the time domain. Within a given time unit, different repeated transmissions can be transmitted within different activated or available frequency domain units.

[0082] Optionally, when only one frequency domain unit in the at least two repeated transmissions of the first transmission is available, activated, or the number of available frequency domain units is less than a first value, the terminal falls back from the inter-frequency domain unit repeated transmission mode to the non-repeated transmission mode or the non-inter-frequency domain unit repeated transmission mode. For example, the terminal transmits different repeated transmissions at different times in the same frequency domain unit.

[0083] Specifically, the repeated transmission mode between frequency domain units is a mode of transmission on different frequency domain units in the same time unit or on different frequency domain units in different time units. The repeated transmission mode between non-frequency domain units is a mode of transmission on the same frequency domain unit in different time units. The non-repeated transmission mode is a mode of transmission only once on the same frequency domain unit in the same time unit.

[0084] Optionally, the first value is determined based on at least one of the following: a maximum number of repeated transmissions; a network indication; or a protocol pre-defined value.

[0085] 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 repeated transmission mode between frequency domain units to the non-repeated transmission mode or the repeated transmission mode between non-frequency domain units. Alternatively, if the first transmission includes three repeated transmissions, such as if the maximum number of repetitions configured or indicated by the base station is 3, the frequency domain unit where the first repeated transmission is located and the frequency domain unit where the second repeated transmission is located are available, and the frequency domain unit where the third repeated transmission is located is unavailable, the terminal can fall back from the repeated transmission mode between frequency domain units to the non-repeated transmission mode or the repeated transmission mode between non-frequency domain units.

[0086] Optionally, the frequency domain unit may include at least one of the following: the frequency domain unit is activated or in an activated state; the frequency domain unit is configured or indicated at the time domain position corresponding to the first transmission to have a transmission direction that 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 the frequency domain unit is configured or indicated as a UL, flexible, sub-band full-duplex (SBFD) symbol; when the first transmission is a downlink transmission, the time domain position corresponding to the frequency domain unit is configured or indicated as a DL, flexible, SBFD symbol; the frequency domain resources of the first transmission are within the available resource range of the frequency domain unit, for example, if 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 frequency domain resource bandwidth 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, the frequency domain resources of the first transmission all fall within the corresponding frequency domain unit.

[0087] The repeated transmission method provided in the embodiment of the present application determines the frequency domain unit where each repeated transmission of the at least two repeated transmissions of the first transmission is located through the terminal; the terminal transmits on the frequency domain unit where at least one repeated transmission of the at least two repeated transmissions is located based on the repeated transmission mode, thereby realizing repeated transmission of the first transmission on different frequency domain units, thereby being able to obtain a larger frequency diversity gain or increase the anti-interference capability of the uplink transmission, reduce the transmission delay of the first transmission, and improve the performance of the communication system.

[0088] Optionally, a specific implementation of step 301 includes:

[0089] The terminal determines, based on at least one of the following:

[0090] A predefined rule is used to determine a frequency domain unit where at least one repeated transmission in the at least two repeated transmissions is located;

[0091] The target information is used to indicate the frequency domain unit where at least one of the at least two repeated transmissions is located.

[0092] Specifically, the predefined rules are used to determine the frequency domain unit in which at least one of the at least two repeated transmissions is located. For example, the frequency domain unit in which the first repeated transmission is located is determined according to the predefined rules, and the frequency domain unit in which each repeated transmission starting from the second repeated transmission is located is determined by network configuration or instruction. Alternatively, the frequency domain unit in which each repeated transmission starting from the second repeated transmission is located is determined according to the predefined rules, and the frequency domain unit in which the first repeated transmission is located is determined by network configuration or instruction. The target information is used to indicate the frequency domain unit in which at least one of the at least two repeated transmissions is located. For example, the target information indicates the frequency domain unit in which the first repeated transmission is located, the frequency domain unit in which the second repeated transmission is located, and the frequency domain unit in which the third repeated transmission is located.

[0093] The terminal may determine the frequency domain unit where each repeated transmission in the at least two repeated transmissions is located according to a predefined rule or at least one item of target information.

[0094] For example, the frequency domain unit where the first repeated transmission is located is determined according to a predefined rule or DCI indication, or the frequency domain unit where each repeated transmission is located in at least two repeated transmissions predefined by the protocol, for example, the first transmission includes 2 repeated transmissions, the frequency domain unit for the first repeated transmission is the frequency domain unit with the smallest frequency domain unit index, the smallest frequency, or the frequency domain unit where the first transmission is indicated to be transmitted in the uplink activated frequency domain unit, the frequency domain unit for the second repeated transmission is the frequency domain unit with the largest frequency domain unit index or the highest frequency in the activated frequency domain units, or the next available or activated frequency domain unit of the frequency domain unit where the first repeated transmission is located, and each repeated transmission starting from the second repeated transmission is determined in the uplink activated frequency domain unit in ascending order according to the frequency domain unit index or frequency. For example, the four repeated transmissions are the first, second, third, and fourth frequency domain units in the uplink activated frequency domain unit, respectively, sorted in ascending order according to the index.

[0095] Optionally, when the frequency domain unit index increases or the frequency increases beyond the maximum index or maximum frequency of the frequency domain unit configured, available or activated by the terminal, the terminal can use a wrap around or remainder operation to determine the frequency domain unit in which each repeated transmission starting from the second repeated transmission is located, that is, after the maximum index or maximum frequency of the frequency domain unit increases, the corresponding frequency domain unit is the first frequency domain unit (with the smallest index) or the frequency domain unit with the lowest frequency among the configured, available or activated frequency domain units.

[0096] Optionally, the method for obtaining the frequency domain unit in which the first repeated transmission and each repeated transmission starting from the second repeated transmission are located may be the same or different. For example, the base station configures the frequency domain unit in which the first repeated transmission is located through network high-layer signaling, and determines the frequency domain unit in which each repeated transmission starting from the second repeated transmission is located through a predefined rule or network dynamic signaling indication; or, the base station indicates the frequency domain unit in which the first repeated transmission is located through network dynamic indication signaling, and determines the frequency domain unit in which each repeated transmission starting from the second repeated transmission is located through a predefined rule or network high-layer signaling configuration.

[0097] Optionally, the base station may further indicate the frequency domain unit where the first repeated transmission is located through high-layer configuration or DCI, and determine the frequency domain unit where each repeated transmission starting from the second repeated transmission is located through a predefined rule.

[0098] Optionally, the terminal receives high-layer signaling or dynamic signaling sent by a 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.

[0099] The network side device can send high-level signaling or dynamic signaling to the terminal, and the terminal receives the high-level signaling or dynamic signaling sent by the network side device; wherein, the high-level signaling is used to configure the target information, and the dynamic signaling is used to indicate the target information; the target information is used to indicate the frequency domain unit where at least one repeated transmission in at least two repeated transmissions is located.

[0100] Optionally, the target information includes at least one of the following:

[0101] (a) First information is used to indicate the frequency domain unit where each repeated transmission in the at least two repeated transmissions is located.

[0102] 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-level signaling, dynamic signaling, or protocol pre-defined items sent by the network side device. For example, the first transmission is configured or indicated to have a number of repeated transmissions of 2, and the base station configures or indicates the frequency domain unit index where the first repeated transmission is located. The base station configuration, instruction or protocol predefined method determines the frequency domain unit index where the second repeated transmission is located

[0103] 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.

[0104] (b) The second information is used to indicate the frequency domain unit index where the first repeated transmission is located. For example, the base station configures or indicates the frequency domain unit index where the first repeated transmission is located.

[0105] (c) A first frequency domain unit offset, used to indicate the offset or minimum offset of the frequency domain unit index of each repeated transmission starting from the second repeated transmission 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.

[0106] Specifically, the first frequency domain unit offset may only consider activated or available frequency domain units, that is, the frequency domain unit in which the first repeated transmission is located is offset by the first frequency domain unit offset number of activated or available frequency domain units. The base station may configure, indicate, or predefine the first frequency domain unit offset by a protocol.

[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 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 is based on the frequency domain unit index where the first repeated transmission is located. And offset 2, determine the frequency domain unit index where the second repeated transmission is located as

[0108] 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, and the indexes of the frequency domain units activated by the terminal are 0, 1, 4, 5, and 6 respectively. The terminal is based on the frequency domain unit index where the first repeated transmission is located. And the offset 2 is offset in the activated frequency domain unit to determine that the frequency domain unit index where the second repeated transmission is located is 5.

[0109] 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, and the terminal is based on the frequency domain unit index where the first repeated transmission is located. And the minimum offset is 2, the frequency domain unit index is determined to be (Offset times is 1), if the frequency domain unit with frequency domain unit index 3 is available, the frequency domain unit index 3 where the second repetition is transmitted is used; if the frequency domain unit with frequency domain unit index 3 is not available, the terminal offsets 2 based on the frequency domain unit index 3 and determines the frequency domain unit index as (Offset times are 2), if the frequency domain unit with frequency domain unit index 5 is available, then the frequency domain unit with frequency domain unit index 5 is determined as the frequency domain unit index for the second repeated transmission, otherwise, continue to offset 2 based on the frequency domain unit index 5 until an available frequency domain unit is found or the offset times reach the maximum times or all possible frequency domain units are traversed. At this time, if the frequency domain unit with frequency domain unit index 5 is available, the actual offset between the frequency domain unit index 5 for the second repeated transmission and the frequency domain unit index 1 for the first repeated transmission is 4, which is an integer multiple of the offset value 2 configured by the base station.

[0110] For example, the frequency domain unit index where the second repeated transmission is located is determined according to the base station configuration, instruction or predefined rules. 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, and the terminal uses the frequency domain unit index where the second repeated transmission is located And offset 2, determine the frequency domain unit index where the third repeated transmission is located as

[0111] For example, the frequency domain unit index where the third repeated transmission is located is determined according to the base station configuration, instruction or predefined rules. And configure or indicate that the offset of the frequency domain unit index where the fourth repeated transmission is located relative to the frequency domain unit index where the previous repeated transmission is located is 3, and the terminal is based on the frequency domain unit index where the third repeated transmission is located. And the offset 3, the frequency domain unit index where the fourth repeated transmission is located is determined to be

[0112] (d) 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 frequency domain unit index of each repeated transmission starting from the second repeated transmission relative to the frequency domain unit index of the first repeated transmission.

[0113] Specifically, the base station may configure one or more first frequency domain unit offset lists, for example, through frequency domain unit list ID identification, and indicate one of the first frequency domain unit offset lists for the first transmission, for example, configure or indicate a frequency domain unit list ID, and the first frequency domain unit offset list includes at least one second frequency domain unit offset. For example, the first transmission includes two repeated transmissions, and only one second frequency domain unit offset is needed to determine the frequency domain unit index where the second repeated transmission is located. If the first frequency domain unit offset list contains a second frequency domain unit offset, the terminal determines the frequency domain unit where the second repeated transmission is located based on the frequency domain unit index where the first repeated transmission is located and the second frequency domain unit offset. Alternatively, the first transmission includes two repeated transmissions, the first frequency domain unit offset list contains multiple second frequency domain unit offsets, and the terminal determines the candidate frequency domain unit where the second repeated transmission is located based on the frequency domain unit index where the first repeated transmission is located and the second frequency domain unit offset. For example, the terminal determines a frequency domain unit as the frequency domain unit where the second repeated transmission is located based on the frequency domain unit where the first repeated transmission is located and the first second frequency domain unit offset in the first frequency domain unit offset list. Or the terminal determines the first candidate frequency domain unit based on the frequency domain unit where the first repeated transmission is located and the first second frequency domain unit offset in the first frequency domain unit offset list. If the candidate frequency domain unit is available, the candidate frequency domain unit is determined to be the frequency domain unit where the second repeated transmission is located. If the candidate frequency domain unit is not available, the terminal determines the second candidate frequency domain unit based on the frequency domain unit where the first repeated transmission is located and the second second frequency domain unit offset in the frequency domain unit offset list, and determines the frequency domain unit where the second repeated transmission is located according to whether the second candidate frequency domain unit is available. If the second candidate frequency domain unit is not available, the terminal determines the third candidate frequency domain unit based on the frequency domain unit where the first repeated transmission is located 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.

[0114] 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.

[0115] For example, the base station configures or indicates the frequency domain unit index where the first repeated transmission is located And configure or indicate the first second frequency domain unit offset in the first frequency domain unit offset list to be 2, 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, and the terminal is based on the frequency domain unit index where the first repeated transmission is located. And offset 2, determine the frequency domain unit index where the second repeated transmission is located as

[0116] 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 first second frequency domain unit offset in the first frequency domain unit offset list is 3, and 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 is based on the frequency domain unit index where the first repeated transmission is located. And the offset 3, determine the frequency domain unit index is (Offset times is 1), if the frequency domain unit with frequency domain unit index 4 is available, the frequency domain unit index 4 where the second repetition is transmitted; if the frequency domain unit with frequency domain unit index 4 is not available, the terminal offsets 3 based on the frequency domain unit index 4 and determines the frequency domain unit index as (Offset times are 2), if the frequency domain unit with frequency domain unit index 7 is available, then the frequency domain unit with frequency domain unit index 7 is determined as the frequency domain unit index for the second repeated transmission, otherwise, continue to offset 3 based on the frequency domain unit index 7 until an available frequency domain unit is found or the offset times reach the maximum times or all configured frequency domain units are traversed. At this time, if the frequency domain unit with frequency domain unit index 7 is available, the actual offset between the frequency domain unit index 7 for the second repeated transmission and the frequency domain unit index 1 for the first repeated transmission is 6.

[0117] Optionally, assuming that PUCCH / PUSCH has only two repeated transmissions, 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 minimum offset from 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 by the first frequency domain offset unit list can be candidate offsets, or the frequency domain unit determined according to the multiple second frequency domain unit offsets is a candidate frequency domain unit, and 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 in the candidate frequency domain units as the frequency domain unit where the second repeated transmission is located.

[0118] (e) 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 frequency domain unit index of each repeated transmission starting from the second repeated transmission relative to the frequency domain unit index of the previous repeated transmission.

[0119] Specifically, the base station may also configure one or more second frequency domain unit offset lists, for example, through frequency domain unit list ID identification, 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, the first transmission includes 2 repeated transmissions, and only one third frequency domain unit offset is needed to determine the frequency domain unit index where the second repeated transmission 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 repeated transmission starting from the second repeated transmission is located relative to the frequency domain unit index where the previous repeated transmission is located.

[0120] Each third frequency domain unit offset in the second frequency domain unit offset list corresponds one-to-one to each repeated transmission starting from the second repeated transmission. For example, the first third frequency domain unit offset in the second frequency domain unit offset list corresponds to the second repeated transmission, and the third second frequency domain unit offset in the first frequency domain unit offset list corresponds to the third repeated transmission.

[0121] For example, the frequency domain unit index where the second repeated transmission is located is determined according to the base station configuration or instruction or predefined rules. 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 the third 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 previous repeated transmission is located. The terminal is based on the frequency domain unit index where the first repeated transmission is located. And offset 2, determine the frequency domain unit index where the second repeated transmission is located as

[0122] For example, the frequency domain unit index where the second repeated transmission is located is determined according to the base station configuration or instruction 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 the third frequency domain unit offset indicates 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. The terminal is based on the frequency domain unit index where the second repeated transmission is located. And the fourth target offset is 3, the frequency domain unit index where the third repeated transmission is located is determined to be

[0123] Optionally, assuming that PUCCH / PUSCH has only two repeated transmissions, a second frequency domain offset unit list configured by the base station contains multiple third frequency domain unit offsets, and each third frequency domain unit offset is used to indicate the offset or 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 frequency domain offset unit list can be candidate offsets, or the frequency domain unit determined according to the multiple third frequency domain unit offsets is a candidate frequency domain unit. The terminal can only use one frequency domain unit in the candidate frequency domain unit to transmit the second repeated transmission. For example, the terminal uses the first available frequency domain unit in the candidate frequency domain unit as the frequency domain unit where the second repeated transmission is located.

[0124] (f) A first frequency domain unit list, where the first frequency domain unit list is used to indicate a frequency domain unit index where each repeated transmission starting from the second repeated transmission is located.

[0125] Specifically, the frequency domain unit index where the first repeated transmission is located is determined according to the base station configuration or instruction or predefined rules. The base station also configures or indicates a first frequency domain unit list; the first frequency domain unit list 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 frequency domain unit list corresponds to the frequency domain unit index of each repeated transmission starting from the second repeated transmission. For example, the first frequency domain unit list includes 3 frequency domain unit indexes, wherein the first frequency domain unit index corresponds to the frequency domain unit index of the second repeated transmission, the second frequency domain unit index corresponds to the frequency domain unit index of the third repeated transmission, and the third frequency domain unit index corresponds to the frequency domain unit index of the fourth repeated transmission.

[0126] Optionally, assuming that PUCCH / PUSCH has only two repeated transmissions, in one embodiment, the first frequency domain unit index configured in the first frequency domain unit list is the frequency domain unit where the second repeated transmission is located; in another embodiment, the multiple frequency domain unit indexes configured in the first frequency domain unit list 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 as the frequency domain unit where the second repeated transmission is located.

[0127] (g) A second frequency domain unit list, where the second frequency domain unit list is used to indicate a frequency domain unit index where each repeated transmission in the at least two repeated transmissions is located.

[0128] Specifically, the base station configures or indicates a second frequency domain unit list, the second frequency domain unit list includes multiple frequency domain unit indexes, and each frequency domain unit index starting from the first frequency domain unit index in the second frequency domain unit list corresponds to the frequency domain unit index where each repeated transmission is located. For example, the second frequency domain unit list includes 3 frequency domain unit indexes, wherein 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 based on the second frequency domain unit list.

[0129] Optionally, assuming that PUCCH / PUSCH has only two repeated transmissions, the multiple frequency domain unit indices configured in the second frequency domain unit list are candidate frequency domain unit indices, and 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 for the first repeated transmission, and uses the second available frequency domain unit as the frequency domain unit for the second repeated transmission, or the first frequency domain unit index and the second frequency domain unit index in the second frequency domain unit list correspond to the first repeated transmission and the second repeated transmission, respectively.

[0130] (h) a repetition transmission pattern, wherein the repetition transmission pattern is used to indicate a frequency domain unit where each repetition transmission in the at least two repetition transmissions is located.

[0131] Optionally, a method for acquiring the frequency domain unit index for the first repeated transmission is the same as or different from a method for acquiring the frequency domain unit index for each repeated transmission starting from the second repeated transmission.

[0132] Specifically, the base station configures the frequency domain unit index where the first repeated transmission is located through high-level 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-level signaling.

[0133] Optionally, the repetition transmission pattern also indicates the time domain unit where each repetition transmission of the first transmission is located or the relationship between the time domain units where different repetition transmissions 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 transmitted in the time unit, and 0 indicates that the first transmission is not transmitted in the time unit. For example, 10010 indicates that the first transmission transmits the first repetition transmission and the second repetition transmission in the first slot and the fourth slot respectively. The first slot and the fourth slot can 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 where the first repetition transmission of the first transmission is located is determined according to the configuration or indication of the base station, and the time domain units where the remaining repetition transmissions are located are determined according to predefined rules (for example, the time domain units where different repetition transmissions are located are continuous time slots or sub-time slots or continuous available time slots or sub-time slots, etc.). The repeated transmission pattern also indicates the time domain unit where each repeated transmission of the first transmission is located or the relationship between the time domain units where different repeated transmissions are located can flexibly indicate the time domain units where different repeated transmissions are located, which can ensure that each repeated transmission of the first transmission can be transmitted, thereby improving the reliability of the first transmission.

[0134] In an embodiment of the present application, the terminal can accurately determine the frequency domain unit where each of the at least two repeated transmissions of the first transmission is located based on the target information configured or indicated by the base station, so that the terminal can transmit on different frequency domain units where at least one of the at least two repeated transmissions is located, thereby obtaining a larger frequency diversity gain or increasing the anti-interference capability of the uplink transmission, thereby improving the performance of the communication system.

[0135] Optionally, a specific implementation of step 301 includes any one of the following:

[0136] (1) The terminal determines the frequency domain unit index where the hth repeated transmission is located based on the frequency domain unit index where the first repeated transmission is located and the first frequency domain unit offset; wherein h is an integer greater than 1.

[0137] For example, when h is 2, the frequency domain unit index where the first repeated transmission is located is 1, and the first frequency domain unit offset is 2, then the terminal can determine that the frequency domain unit index where the second repeated transmission is located is 3; when h is 3, the terminal can determine that the frequency domain unit index where the third repeated transmission is located is 5.

[0138] (2) The terminal determines the frequency domain unit index where the (m+1)th repeated transmission is located based on the frequency domain unit index where the mth repeated transmission is located and the first frequency domain unit offset; wherein m is an integer greater than 0.

[0139] For example, when m is 1, the frequency domain unit index where the mth repeated transmission is located is 1, and the offset of the first frequency domain unit is 2. The frequency domain unit index determined by the terminal for the first offset is 3, but because the frequency domain unit with an index of 3 is not available, the terminal offsets by 2 based on the frequency domain unit index 3, and the frequency domain unit index determined by the terminal for the second offset is 5. When the frequency domain unit with an index of 5 is not available, the terminal offsets by 2 based on the frequency domain unit index of 5, and the frequency domain unit index determined by the third offset is 1+2*3=7. When the frequency domain unit with an index of 7 is not available, the offset is repeated until an available frequency domain unit is found or until the maximum number of offsets predefined or configured by the base station is executed.

[0140] (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; wherein, i is a positive integer.

[0141] 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.

[0142] For example, i=1, the frequency domain unit index of the first repeated transmission is 1, the first second frequency domain unit offset in the first frequency domain unit offset list is 2, and the second frequency domain unit offset represents the offset relative to the frequency domain unit index of the first repeated transmission. The terminal can determine that the frequency domain unit index of the second repeated transmission is 3; i=2, the frequency domain unit index of the first repeated transmission is 1, the second second frequency domain unit offset in the first frequency domain unit offset list is 3, and the terminal can determine that the frequency domain unit index of the third repeated transmission is 4.

[0143] (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 gth repeated transmission is located and the gth third frequency domain unit offset in the second frequency domain unit offset list; wherein g is a positive integer.

[0144] For example, g=2, the frequency domain unit index of the second repeated transmission is 2, the third frequency domain unit offset represents the offset relative to the frequency domain unit index of the previous repeated transmission, and the second second frequency domain unit offset in the first frequency domain unit offset list is taken as 2, then the determined frequency domain unit index is 2+2=4; when the frequency domain unit with index 4 is not available, the third second frequency domain unit offset in the frequency domain unit offset list is taken as 5, then the determined frequency domain unit index is 4+6=10; when the frequency domain unit with index 10 is not available, 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 completed.

[0145] Optionally, when the frequency domain unit where any repeated transmission is determined to be located is unavailable, the terminal transmits according to at least one of the following: the terminal cancels any repeated transmission; the terminal postpones any repeated transmission to the next available frequency domain unit transmission; the terminal postpones any repeated transmission to the available frequency domain unit transmission corresponding to the next available time unit.

[0146] For example, the first transmission includes two repeated transmissions, the frequency domain unit index of the first repeated transmission is 1, the first offset is 2, the frequency domain unit index of the second repeated transmission is determined to be 3, and the frequency domain unit with the frequency domain unit index 3 is unavailable, then the terminal can cancel the second repeated transmission, or the terminal switches the second repeated transmission to other frequency domain units, such as the frequency domain unit with the frequency domain unit index 5 (assuming that the frequency domain unit 5 is available), or the terminal postpones the second repeated transmission to the available frequency domain unit corresponding to the next available time unit (assuming that the frequency domain unit 1 is available). Optionally, when the next available time unit is an uplink transmission, the frequency domain unit in which it is located can be the same as or different from that before the postponement.

[0147] 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 of the configured, activated or available multiple frequency domain units, or the frequency domain unit frequency is greater than the maximum frequency of the configured, activated or available multiple frequency domain units, the terminal uses a wrap around or remainder operation to determine the frequency domain unit index of each repeated transmission starting from the second repeated transmission.

[0148] For example, when When the maximum index is greater than the maximum index of multiple frequency domain units configured or activated, the terminal uses wrap around or modulo operation to determine like in, Indicates the uplink configuration, available, or number of activated frequency domain units.

[0149] Optionally, a specific implementation of step 301 includes:

[0150] The terminal determines, according to the order of frequency domain unit indexes in the first frequency domain unit list or the second frequency domain unit list, a frequency domain unit in which each repeated transmission in the at least two repeated transmissions of the first transmission is located.

[0151] 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 corresponds to the frequency domain unit index of each repeated transmission starting from the second repeated transmission. For example, the first frequency domain unit list includes 2 frequency domain unit indexes, wherein the first frequency domain unit index corresponds to the frequency domain unit index of the second repeated transmission, and the second frequency domain unit index corresponds to the frequency domain unit index of the third repeated transmission. The terminal can determine the frequency domain unit where each repeated transmission is located based on the first frequency domain unit list.

[0152] The terminal may determine the frequency domain unit index of each repeated transmission starting from the second repeated transmission according to the order in which the frequency domain unit index in the first frequency domain unit list corresponds to the frequency domain unit index of each repeated transmission starting from the second repeated transmission. Then, based on the frequency domain unit index of the first repeated transmission and the frequency domain unit index of each repeated transmission starting from the second repeated transmission, the terminal may determine the frequency domain unit in which at least one repeated transmission of the at least two repeated transmissions is located.

[0153] For example, the first frequency domain unit list includes three frequency domain unit indexes, wherein the first frequency domain unit index corresponds to the frequency domain unit index for the second repeated transmission, the second frequency domain unit index corresponds to the frequency domain unit index for the third repeated transmission, and the third frequency domain unit index corresponds to the frequency domain unit index for the fourth repeated transmission. The terminal can determine that the frequency domain unit index for the second repeated transmission is the first frequency domain unit index, the frequency domain unit index for the third repeated transmission is the second frequency domain unit index, and the frequency domain unit index for the fourth repeated transmission is the third frequency domain unit index, according to the order in which the frequency domain unit indices in the first frequency domain unit list correspond to the frequency domain unit indices for each repeated transmission starting from the second repeated transmission.

[0154] The second frequency domain unit list also includes multiple frequency domain unit indexes, and 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 in at least two repeated transmissions is located. For example, the second frequency domain unit list includes 3 frequency domain unit indexes, wherein 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 based on the second frequency domain unit list.

[0155] The terminal may also determine the frequency domain unit in which each of the at least two repeated transmissions of the first transmission is located, by sequentially corresponding the frequency domain unit indexes in the second frequency domain unit list to the frequency domain unit index sequence of 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 for the first repeated transmission, the second frequency domain unit index is the frequency domain unit index for the second repeated transmission, and the third frequency domain unit index is the frequency domain unit index for the third repeated transmission.

[0156] In an embodiment of the present application, the terminal determines the frequency domain unit index of each repeated transmission through the first frequency domain unit column or the second frequency domain unit list, thereby improving the determination efficiency of each repeated transmission and realizing repeated transmission of the first transmission on different frequency domain units, thereby obtaining a larger frequency domain diversity gain or increasing anti-interference capability, while reducing latency and improving the effectiveness and performance of the communication system.

[0157] Optionally, when the first target frequency domain unit determined according to the order of frequency domain unit indices 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, when the second target frequency domain unit determined according to the order of frequency domain unit indices 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.

[0158] 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 index 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 repetitions. Or,

[0159] When the second target frequency domain unit determined by the terminal in the order of the frequency domain unit index in the first frequency domain unit list or the second frequency domain unit list is unavailable, the terminal can sequentially advance to the next frequency domain unit of the second target frequency domain unit. At this time, the repeated transmission corresponding to the second target frequency domain unit is not counted in the total number of repetitions. 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 next frequency domain unit of the second target frequency domain unit is advanced until the determined frequency domain unit is available or the last frequency domain unit in the first frequency domain unit list is reached.

[0160] For example, the first frequency domain unit list includes 3 frequency domain unit indices. When the frequency domain unit corresponding to the first frequency domain unit index is available, the terminal determines 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 not available, the terminal can 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 second frequency domain unit index as the frequency domain unit index where the second repeated transmission is located.

[0161] For example, the second frequency domain unit list includes 4 frequency domain unit indices, the terminal determines 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, and when the frequency domain unit corresponding to the second frequency domain unit index is available, the terminal determines 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 can cancel the second repetition; or, the terminal determines whether the frequency domain unit corresponding to the third frequency domain unit index is available, and when the frequency domain unit corresponding to the third frequency domain unit index is available, the terminal determines the third frequency domain unit index as the frequency domain unit index where the second repetition is located.

[0162] Alternatively, the terminal determines 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+1th repeated transmission of the first transmission.

[0163] Alternatively, the terminal determines 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 transmission of the first transmission.

[0164] Optionally, the method further includes any of the following:

[0165] 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 N, the terminal determines the first N-1 frequency domain unit indexes in the first frequency domain unit list as the frequency domain unit indexes for each repeated transmission starting from the second repeated transmission, or determines the first N frequency domain unit indexes in the second frequency domain unit list as the frequency domain units for each repeated transmission in the at least two repeated transmissions, 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 repeated transmissions configured or indicated for the first transmission;

[0166] When the number M of frequency domain units in the first frequency domain unit list is less than (N-1), for each repeated transmission before the M+2th repeated transmission, the terminal sequentially determines the M frequency domain unit indexes in the first frequency domain unit list as the frequency domain unit indexes for the second repeated transmission to the M+1th repeated transmission; for each repeated transmission starting from the M+2th repeated transmission, the terminal starts a loop from the first frequency domain unit in the M frequency domain units in the first frequency domain unit list, and loops back from the last frequency domain unit in the M frequency domain units in the first frequency domain unit list or the second to last frequency domain unit in the M frequency domain units in the first frequency domain unit list to determine the frequency domain unit index for each repeated transmission starting from the M+2th repeated transmission; M is a positive integer, and N is the number of repeated transmissions configured or indicated for the first transmission;

[0167] When the number of frequency domain units M in the second frequency domain unit list is less than N, for each repeated transmission before the M+1th repeated transmission, the terminal determines the M frequency domain unit indices in the second frequency domain unit list as the frequency domain unit indices for the first repeated transmission to the Mth repeated transmission in sequence; for each repeated transmission starting from the M+1th repeated transmission, the terminal starts to loop from the first frequency domain unit in the M frequency domain units in the second frequency domain unit list, and loops back from the last frequency domain unit in the M frequency domain units in the first frequency domain unit list or the second to last frequency domain unit in the M frequency domain units in the first frequency domain unit list to determine the frequency domain unit index for each repeated transmission starting from the M+1th repeated transmission, where M is a positive integer and N is the number of repeated transmissions configured or indicated for the first transmission.

[0168] For example, if the number of frequency domain units in the first frequency domain unit list or the second frequency domain unit list is M=4 and the number of repeated transmissions is 3, the terminal determines the first two frequency domain unit indices in the first frequency domain unit list or the second frequency domain unit list as the frequency domain unit index for the second repeated transmission and the frequency domain unit index for the third repeated transmission in the order of the frequency domain unit indices for each repeated transmission starting from the second repeated transmission, in accordance with the frequency domain unit indices in the first frequency domain unit list or the second frequency domain unit list.

[0169] For example, if the number of frequency domain units in the first frequency domain unit list is M=4 and the number of repeated transmissions is 6, the four frequency domain unit indexes in the first frequency domain unit list are sequentially determined as the frequency domain unit index for the second repeated transmission to the frequency domain unit index for the fifth repeated transmission in the order of the frequency domain unit indexes in the first frequency domain unit list. For the frequency domain unit index for 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 for the sixth repeated transmission.

[0170] For example, the number of frequency domain units in the second frequency domain unit list is M=4, and the number of repeated transmissions is 8. According to the order of the frequency domain unit indexes in the second frequency domain unit list, the first four frequency domain unit indexes in the first frequency domain unit list are sequentially determined as the frequency domain unit index for the first repeated transmission to the frequency domain unit index for the fourth repeated transmission. For the frequency domain unit index for the fifth repeated transmission, the terminal determines the first frequency domain unit or the fourth frequency domain unit or the third frequency domain unit in the first frequency domain unit list as the frequency domain unit index for the fifth repeated transmission (corresponding to the above different methods respectively). For the frequency domain unit index for 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 for the sixth repeated transmission. For the frequency domain unit index for 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 for the seventh repeated transmission. For the frequency domain unit index for 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 for the eighth repeated transmission. That is, the frequency domain unit corresponding to each of the eight repeated transmissions is determined in a cyclic manner, where the length of the cycle is 4.

[0171] Next, the repeated transmission method provided in the embodiment of the present application is further explained through specific examples.

[0172] Example 1

[0173] Assume that a cell consists of four frequency domain units. The sizes of these four frequency domain units (frequency domain unit index 0, frequency domain unit index 1, frequency domain unit index 2, and 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 four frequency domain units.

[0174] For each PUCCH resource, the base station configures (for example, according to the frequency domain unit index (ID) where the PUCCH resource is configured, or each (per) PUCCH resource configures the frequency domain unit corresponding to the PUCCH resource, or for channel state information (CSI), scheduling request (SR) or semi-persistent scheduling (SPS) hybrid automatic repeat request acknowledgement (HARQ-ACK) reporting, indicating the frequency domain unit where the CSI, SR, SPS or HARQ-ACK is reported) or indicates (for example, for dynamically scheduled HARQ-ACK, by scheduling or activating DCI to indicate the frequency domain unit where the HARQ-ACK is located) the frequency domain unit index where the first repeated transmission is located (the frequency domain unit index can be an ID), and configures or indicates the frequency domain unit index where the remaining repeated transmissions are located.

[0175] For example, the base station configures the frequency domain unit ID of each PUCCH transmission (if the PUCCH transmission is configured for repeated transmission, it is the first transmission) through high-level parameters. Figure 9 is one of the frequency domain unit index schematic diagrams of each repeated transmission of the PUCCH transmission provided in an embodiment of the present application. As shown in Figure 9, the base station configures the first repeated transmission of a PUCCH transmission at BWP0 through the high-level layer, and configures or indicates the number of repeated transmissions of the PUCCH. When the PUCCH is configured or enabled for repeated transmission between frequency domain units (also known as frequency hopping between frequency domain units), the UE determines the frequency domain units where the remaining repeated transmissions are located based on the high-level configuration (such as configuring the frequency hopping pattern, the frequency domain unit where each repeated transmission is located, or the frequency domain unit offset, etc.) and at least one of the predefined rules.

[0176] As shown in Figure 9, the base station instructs the terminal to transmit PUCCH / PUSCH in a certain time unit, and configures the repetition transmission mode to be the second repetition transmission mode (time domain repetition transmission mode, that is, transmitting different repetition transmissions of the PUCCH / PUSCH at different time positions and different frequency domain units (referred to as frequency hopping repetition transmission between frequency domain units)), as shown in Figure 5. Among them, different repetition transmissions do not overlap in time, and may overlap or not overlap in the frequency domain. In other words, the transmission of different repetition transmissions in different frequency domain units indicates that there are at least two repetition transmissions in all repetition transmissions in different frequency domain units.

[0177] Assuming that the number of repetitions configured for the PUCCH / PUSCH is 4, and the PUCCH / PUSCH is semi-statically (high-layer signaling) configured, the frequency domain unit where the first repetition of the PUCCH / PUSCH is located is determined to be BWP0 according to the configuration, and the frequency domain unit indexes where the remaining repetitions are located are determined by incrementing the frequency domain unit index by 1 (optionally, including a wrap around operation). The UE then 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 shown in Figure 9, since the frequency domain units corresponding to the time unit where the fourth repetition is located are all activated UL frequency domain units, the UE can transmit four repetitions respectively.

[0178] Figure 10 is a second schematic diagram of the frequency domain unit index of each repeated transmission of the first transmission (assuming it is a PUCCH transmission) provided in an embodiment of the present application. As shown in Figure 10, it is assumed that the time unit where the fourth repeated transmission is located in the four repeated transmissions determined according to the base station configuration, indication or certain rules is slot 3, and the frequency domain unit is BWP0. Since the frequency domain unit corresponding to the fourth repeated transmission of PUCCH in this time unit overlaps with the DL resource, the UE cannot transmit the fourth repeated transmission on this time-frequency resource. In one embodiment, the UE cancels the fourth repeated transmission; in another embodiment, the UE postpones the fourth repeated transmission to the next available time-frequency resource, as shown in Figure 11 or 12. Figure 11 is the third schematic diagram of the frequency domain unit index where each repeated transmission of the PUCCH transmission provided in an embodiment of the present application is located. As shown in Figure 11, the UE postpones the fourth repeated transmission to another available frequency domain unit of the same time domain unit, such as BWP1. Figure 12 is the fourth schematic diagram of the frequency domain unit index where each repeated transmission of the PUCCH transmission provided in an embodiment of the present application is located. As shown in Figure 12, the UE postpones the fourth repeated transmission to the same frequency domain unit of the next available time unit (frequency domain unit BWP0 corresponding to slot4).

[0179] FIG13 is a fifth schematic diagram of the frequency domain unit index for each repeated transmission of a PUCCH transmission provided in an embodiment of the present application. As shown in FIG13 below, 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, transmitting different repeated transmissions of the first transmission at the same time position but in different frequency domain units. The different repeated transmissions do not overlap in the frequency domain.

[0180] Assuming that the number of repeated transmissions configured for the PUCCH / PUSCH is 4, and the PUCCH / PUSCH is DCI scheduled, the frequency domain unit where the first repeated transmission of the PUCCH / PUSCH is located is determined to be BWP2 according to the scheduling DCI corresponding to the PUCCH / PUSCH, and the frequency domain unit indexes of the remaining repeated transmissions are determined by increasing the frequency domain unit index by 1 (optionally, including wrap around). 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.

[0181] Because BWP3 is configured as a DL resource or is in an inactive state during this time unit, the UE cannot perform PUCCH / PUSCH transmission on BWP3. In one embodiment, the UE cancels the second repetition transmission. In another embodiment, the UE determines that the frequency domain unit in which each repetition transmission occurs is an unavailable frequency domain unit. As shown in Figure 13, the UE postpones the second repetition transmission to BWP0 and the third repetition transmission to BWP1. Since there are no more available frequency domain units in this time unit, the fourth repetition transmission is canceled or not transmitted. The UE actually only transmits three repetitions.

[0182] Among them, there are different redundancy versions (RV) for encoding of PUSCH / PDSCH, etc., and the RV can be determined according to a predefined order, base station configuration or indication. For example, transmission in the order of RV 0 1 2 3 corresponds to different repeated transmissions. In the repeated transmission of the first transmission, if a repeated transmission is due to the frequency domain unit in which it is located being configured as a DL resource or being in an inactive state, the UE cannot perform PUCCH / PUSCH transmission on the frequency domain unit, etc., the UE cancels the repeated transmission. When the UE determines the RV corresponding to each repeated transmission, one implementation method is to determine the RV version according to the repeated transmission of the actual transmission, that is, in the repeated transmission of the actual transmission, different repeated transmissions are corresponding in the order of RV 0, 1, 2, 3. In another implementation method, when determining the RV corresponding to each repeated transmission, the UE does not consider whether each repeated transmission can be transmitted or canceled, and determines the corresponding RV version in all repeated transmissions including the canceled repeated transmission. As shown in Figure 13, the repeated transmission on BWP3 is canceled, and the UE corresponds to each repeated transmission in the manner of RV 0, 1, 2, and 3. Therefore, RV1 corresponding to the second repeated transmission is canceled. Figure 14 is a sixth schematic diagram of the frequency domain unit index of each repeated transmission of PUCCH transmission provided in an embodiment of the present application. As shown in Figure 14 below, the first, second, and third repeated transmissions actually transmitted are RV 0, 1, and 2, respectively, among which RV3 can be canceled or has no corresponding repeated transmission transmission position.

[0183] Figure 15 is the seventh schematic diagram of the frequency domain unit index of each repeated transmission of the PUCCH transmission provided in an embodiment of the present application. As shown in Figure 15 below, the base station instructs the UE to transmit PUCCH / PUSCH in a certain time unit, and configures the repeated transmission mode as time-frequency domain repeated transmission, that is, the frequency domain priority method is used to determine the time-frequency domain position of each repeated transmission of the first transmission, wherein the repetition is first performed in the frequency domain method and then in the time domain method.

[0184] Assuming that the number of repeated transmissions configured for the PUCCH / PUSCH is 4, and the PUCCH / PUSCH is DCI scheduled, the frequency domain unit where the first repeated transmission of the PUCCH / PUSCH is located is determined to be BWP2 according to the scheduling DCI corresponding to the PUCCH / PUSCH, and the remaining repeated transmissions are incremented by 1 in the index of the activated or available frequency domain unit. The UE then determines that the frequency domain unit where the second repeated transmission is located is BWP3.

[0185] 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 frequency domain unit activated by the UE. 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 unit. The frequency domain unit where the third repeated transmission is located is 1 higher than the frequency domain unit where the second repeated transmission is located. The frequency domain unit where the third repeated transmission is located is BWP1.

[0186] Since there are no more activated or available frequency domain units in the time unit, the fourth repetition is transmitted in the next available time unit (the determination method of the time unit can be the same as that of the prior art, such as the next time slot or sub-time slot). In one embodiment, the corresponding frequency domain unit is BWP1 (starting with the smallest index in the activated / available BWP). In another embodiment, in the next time unit, the order of determining the frequency domain units is the same as the order of determining the frequency domain units in the first time unit, that is, whether BWP2 is activated or available is prioritized, and the frequency domain units corresponding to different repetitions are determined in a manner that the index in the frequency domain unit is incremented by 1 (optionally, including a wrap around operation).

[0187] Figure 16 is the eighth schematic diagram of the frequency domain unit index of each repeated transmission of the PUCCH transmission provided in an embodiment of the present application. As shown in Figure 16 below, the wrap around operation is not included. When the UE determines that the frequency domain unit corresponding to the second repeated transmission has no activated or available BWP with an index larger than BWP2 in the same time unit, the second repeated transmission is transmitted in the next available time unit (the time unit can be determined in the same way as in the prior art, such as the next time slot or sub-time slot). In one implementation, the corresponding frequency domain unit is BWP1 (starting from the smallest index among 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 transmitted in the next available time unit, and the frequency domain unit where the fourth repeated transmission is located is BWP1 (assuming it starts from the smallest index among the activated / available BWPs). In another embodiment, in the next time unit, the order of determining the frequency domain units is the same as that of the first time unit, that is, whether BWP2 is activated or available is prioritized, and the frequency domain units corresponding to different repeated transmissions are determined in the manner of increasing the index by 1 in the frequency domain unit (optionally, whether the wrap around operation is included is the same as 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 shown in Figure 17. Figure 17 is the ninth schematic diagram of the frequency domain unit index for each repeated transmission of the PUCCH transmission provided in an embodiment of the present application.

[0188] Example 2

[0189] Conventional downlink physical downlink shared channel (PDSCH) transmission supports non-contiguous physical resource block (PRB) allocation within a single bandwidth workpiece (BWP), eliminating the need for frequency hopping. Sub-3G frequency spectrum resources are relatively fragmented, and the frequency domain resources of a single band are relatively narrow. If PDSCH resource allocation is restricted to a single band, frequency diversity gain is either unattainable or limited.

[0190] Similarly, in order to obtain better frequency diversity gain and anti-interference effect, downlink transmission can also adopt repeated transmission between frequency domain units, and different repeated transmissions of a transmission can be performed in different bands. At the same time, since the number of resource blocks (RBs) allocated for PDSCH resources is usually relatively large, when performing repeated transmission, the base station ensures that the frequency domain unit where each repeated transmission is configured or indicated by it has sufficient RBs for PDSCH transmission, or when the UE determines a frequency domain unit according to the configuration or instruction of the base station, if the frequency domain resources contained in the frequency domain unit cannot meet the requirements of PDSCH transmission, the UE does not perform repeated transmission or searches for another frequency domain unit that meets the requirements for transmission.

[0191] Example 3

[0192] Figure 18 is a tenth schematic diagram of the frequency domain unit index of each repeated transmission of the PUCCH transmission provided in an embodiment of the present application. As shown in Figure 18 below, for a PUCCH / PUSCH transmission, the UE determines to transmit the first repeated transmission at BWP0 and the second repeated transmission at BWP2 according to the base station configuration / instruction, but the PUCCH / PUSCH cannot be transmitted at the time-frequency domain position corresponding to the second repeated transmission. As shown in Figure 18, the symbol position where the PUCCH / PUSCH is located is configured as a DL symbol. In one embodiment, the UE cancels the repeated transmission between frequency domain units and transmits the first repeated transmission and the second repeated transmission at BWP0 (the second repeated transmission does not perform frequency hopping transmission between frequency domain units); in one embodiment, the UE switches the second repeated transmission to another frequency domain unit for transmission according to a predefined rule, for example, the second repeated transmission is transmitted on the activated BWP (BWP1 in Figure 18) with the largest interval with the first repeated transmission; in another embodiment, the UE cancels the transmission of the second repeated transmission.

[0193] The repeated transmission method provided in the embodiment of the present application can be executed by a repeated transmission device. In the embodiment of the present application, the repeated transmission device performing the repeated transmission method is taken as an example to illustrate the repeated transmission device provided in the embodiment of the present application.

[0194] FIG19 is a schematic structural diagram of a repeated transmission apparatus provided in an embodiment of the present application. As shown in FIG19 , the repeated transmission apparatus 1900 includes a first determination module 1901 and a first transmission module 1902; wherein,

[0195] A first determining module 1901 is configured for a terminal to determine a frequency domain unit where each of at least two repeated transmissions of a first transmission is located;

[0196] The first transmission module 1902 is configured to enable the terminal to transmit, based on a repeated transmission mode, on a frequency domain unit where at least one repeated transmission in the at least two repeated transmissions is located.

[0197] The repeated transmission device provided in the embodiment of the present application determines the frequency domain unit where each repeated transmission of at least two repeated transmissions of the first transmission is located; based on the repeated transmission method, the transmission is performed on the frequency domain unit where at least one repeated transmission of the at least two repeated transmissions is located, thereby realizing repeated transmission of the first transmission on different frequency domain units, thereby being able to obtain a larger frequency diversity gain and improve the performance of the communication system.

[0198] Optionally, the repeated transmission mode includes at least one of the following:

[0199] A first repetitive transmission mode indicates that the terminal transmits the at least two repetitive transmissions of the first transmission on the same frequency domain unit in different time units;

[0200] A second repetitive transmission mode indicates that the terminal transmits the at least two repetitive transmissions of the first transmission in different time units and on different frequency domain units;

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

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

[0203] Optionally, the repeated transmission device 1900 further includes:

[0204] The first receiving module is configured to receive high-layer signaling or dynamic signaling, wherein the high-layer signaling is used to configure the repeated transmission mode, and the dynamic signaling is used to indicate the repeated transmission mode.

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

[0206] Determining a frequency domain unit where each of the at least two repeated transmissions of the first transmission is located is based on at least one of the following:

[0207] A predefined rule is used to determine a frequency domain unit where at least one repeated transmission in the at least two repeated transmissions is located;

[0208] The target information is used to indicate the frequency domain unit where at least one of the at least two repeated transmissions is located.

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

[0210] First information is used to indicate the frequency domain unit where each repeated transmission in the at least two repeated transmissions is located;

[0211] The second information is used to indicate the frequency domain unit index where the first repeated transmission is located;

[0212] A first frequency domain unit offset is used to indicate the offset or minimum offset of the frequency domain unit index of each repeated transmission starting from the second repeated transmission relative to the frequency domain unit index of the first repeated transmission, or the offset or minimum offset of the frequency domain unit index of the previous repeated transmission;

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

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

[0215] A first frequency domain unit list, used to indicate the frequency domain unit index of each repeated transmission starting from the second repeated transmission;

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

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

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

[0219] The second receiving module receives high-layer signaling or dynamic signaling sent by a network-side device, wherein 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 configured to perform any of the following:

[0221] Determine the frequency domain unit index where the hth repeated transmission is located based on the frequency domain unit index where the first repeated transmission is located and the first frequency domain unit offset; wherein h is an integer greater than 1;

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

[0223] Determine 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; wherein i is a positive integer;

[0224] 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, determine the frequency domain unit index where the (g+1)-th repeated transmission is located; wherein g is a positive integer.

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

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

[0227] The terminal cancels any repeated transmission;

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

[0229] The terminal postpones any repeated transmission to transmission in an available frequency domain unit corresponding to a next available time unit.

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

[0231] The second determination module is used to use a wrap around or remainder operation to determine the frequency domain unit index of each repeated transmission starting from the second repeated transmission 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 of the configured, activated or available multiple frequency domain units, or the frequency domain unit frequency is greater than the maximum frequency of the configured, activated or available multiple frequency domain units.

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

[0233] The frequency domain unit in which each repeated transmission in the at least two repeated transmissions of the first transmission is located is 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.

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

[0235] A third determining module is configured to cancel repeated transmission corresponding to the first target frequency domain unit when 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;

[0236] or,

[0237] If 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 frequency domain unit next to the second target frequency domain unit is sequentially ranked until the determined frequency domain unit is available or the last frequency domain unit in the first frequency domain unit list.

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

[0239] A fourth determination module is used to determine the first N-1 frequency domain unit indices in the first frequency domain unit list as the frequency domain unit indexes for each repeated transmission starting from the second repeated transmission, or to determine the first N frequency domain unit indices in the second frequency domain unit list as the frequency domain units for each repeated transmission in the at least two repeated transmissions, in accordance with the order of the frequency domain unit indices in the first frequency domain unit list or the second frequency domain unit list, 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 the number of repeated transmissions N; M is a positive integer, and N is the number of repeated transmissions configured or indicated for the first transmission;

[0240] A fifth determination module is configured to, when the number M of frequency domain units in the first frequency domain unit list is less than (N-1), determine, for each repeated transmission before the M+2th repeated transmission, the M frequency domain unit indexes in the first frequency domain unit list as the frequency domain unit indexes for the second repeated transmission to the M+1th repeated transmission; for each repeated transmission starting from the M+2th repeated transmission, loop from the first frequency domain unit in the M frequency domain units in the first frequency domain unit list, and loop back from the last frequency domain unit in the M frequency domain units in the first frequency domain unit list or the second-to-last frequency domain unit in the M frequency domain units in the first frequency domain unit list to determine the frequency domain unit index for each repeated transmission starting from the M+2th repeated transmission; M is a positive integer, and N is the number of repeated transmissions configured or indicated for the first transmission;

[0241] The sixth determination module is used to determine the M frequency domain unit indices in the second frequency domain unit list as the frequency domain unit indices of the first repeated transmission to the Mth repeated transmission for each repeated transmission before the M+1th repeated transmission when the number of frequency domain units M in the second frequency domain unit list is less than N; for each repeated transmission starting from the M+1th repeated transmission, start from the first frequency domain unit in the M frequency domain units in the second frequency domain unit list, and reversely loop from the last frequency domain unit in the M frequency domain units in the first frequency domain unit list or the second to last frequency domain unit in the M frequency domain units in the first frequency domain unit list to determine the frequency domain unit index of each repeated transmission starting from the M+1th repeated transmission; M is a positive integer, and N is the number of repeated transmissions configured or indicated for the first transmission.

[0242] Optionally, the repeated transmission device 1900 further includes

[0243] A fallback module is used to fall back from the repeated transmission mode between frequency domain units to the non-repeated transmission mode or the non-repeated transmission mode between frequency domain units when only the frequency domain unit where one repeated transmission is located in the at least two repeated transmissions of the first transmission is available, activated, or the number of available frequency domain units is less than a first value.

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

[0245] Maximum number of repeated transmissions;

[0246] Network instructions;

[0247] The protocol is predefined.

[0248] Optionally, the frequency domain unit may include at least one of the following:

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

[0250] The transmission direction configured or indicated by 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 resource range of the frequency domain unit.

[0252] The retransmission device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component of an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal or other device other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and the other device can be a server, a network attached storage (NAS), etc., which is not specifically limited in the embodiments of the present application.

[0253] The repeated transmission device provided in the embodiment of the present application can implement each process implemented in the method embodiments of Figures 3 to 18 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0254] The present application also provides a terminal comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG3 . This terminal embodiment corresponds to the aforementioned terminal-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment can be applied to this terminal embodiment and achieve the same technical effects. Specifically, FIG20 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0255] The terminal 2000 includes but is not limited to: 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 at least some of the components of the processor 2010.

[0256] Those skilled in the art will appreciate that the terminal 2000 may also include a power source (such as a battery) to power various secondary components. The power source may be logically connected to the processor 2010 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG20 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements. Detailed descriptions are omitted here.

[0257] It should be understood that in an embodiment of the present application, the input unit 2004 may include a graphics processing unit (GPU) 20041 and a microphone 20042, and the graphics processor 20041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an 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 a liquid crystal display, an organic light emitting diode, etc. The user input unit 2007 includes a touch panel 20071 and at least one of the other input devices 20072. The touch panel 20071 is also called a touch screen. The touch panel 20071 may include two parts: a touch detection device and a touch controller. 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, and a joystick, which will not be repeated here.

[0258] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 2001 may transmit the data to the processor 2010 for processing. Furthermore, the RF unit 2001 may send uplink data to the network-side device. Typically, the RF unit 2001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0259] Memory 2009 can be used to store software programs or instructions and various data. Memory 2009 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). Furthermore, memory 2009 may include volatile memory or non-volatile memory. The non-volatile memory may 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. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 2009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0260] Processor 2010 may include one or more processing units. Optionally, processor 2010 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 2010.

[0261] The processor 2010 is configured to determine a frequency domain unit where each of at least two repeated transmissions of the first transmission is located; and transmit on the frequency domain unit where at least one of the at least two repeated transmissions is located based on a repeated transmission mode.

[0262] The terminal determines the frequency domain unit where each of the at least two repeated transmissions of the first transmission is located; the terminal can, based on the repeated transmission method, transmit on the frequency domain unit where at least one of the at least two repeated transmissions is located, thereby realizing repeated transmission of the first transmission on different frequency domain units, thereby being able to obtain a larger frequency diversity gain and improve the performance of the communication system.

[0263] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment for repeating the transmission method and achieve the same or corresponding technical effect. To avoid repetition, it will not be repeated here.

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

[0265] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

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

[0267] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0268] An 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 effect. To avoid repetition, it will not be repeated here.

[0269] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "includes once..." does not exclude the presence of other identical elements in the process, method, article or device comprising the 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, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the 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 above-mentioned embodiment methods can be implemented by means of a computer software product plus the necessary general hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for causing a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0271] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A retransmission method, comprising: The terminal determines the frequency domain units where each retransmission among at least two retransmissions of the first transmission is located; Based on the retransmission mode, the terminal performs transmission on the frequency domain units where at least one retransmission among the at least two retransmissions is located.

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

3. The repeated transmission method according to claim 1 or 2, wherein, The method further includes: The terminal receives a high-layer signaling or a 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.

4. The repeated transmission method according to any one of claims 1 to 3, wherein, The terminal determines the frequency domain units where each retransmission among at least two retransmissions of the first transmission is located, including: The terminal determines the frequency domain units where each retransmission among the at least two retransmissions 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 retransmission among the at least two retransmissions is located; Target information for indicating the frequency domain units where at least one retransmission among the at least two retransmissions is located.

5. The repeated transmission method according to claim 4, wherein, The target information includes at least one of the following: First information for indicating the frequency domain units where each retransmission among the at least two retransmissions is located; Second information for indicating the frequency domain unit index of the first retransmission; 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; 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 retransmission starting from the second retransmission is located relative to the frequency domain unit index of the first retransmission; 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 retransmission starting from the second retransmission is located relative to the frequency domain unit index of the previous retransmission; A first frequency domain unit list, which is used to indicate the frequency domain unit index where each retransmission starting from the second retransmission is located; A second frequency domain unit list, which is used to indicate the frequency domain unit index where each retransmission in the at least two retransmissions is located; A retransmission pattern, which is 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, wherein, 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 unit offset in the first frequency domain unit 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 unit offset in the second frequency domain unit offset list; where g is a positive integer.

8. The repeated transmission method according to claim 7, wherein, The method further includes: When 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, wherein, The method further includes: 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 uses a wrap around or modulo operation to determine the frequency domain unit index where each retransmission starting from the second retransmission is located.

10. The repeated transmission method according to any one of claims 5 to 9, wherein The terminal determines the frequency domain unit where each retransmission in at least two retransmissions of the first transmission includes: The terminal determines the frequency domain unit where each retransmission in the at least two retransmissions of the first transmission 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, wherein The method further includes: If 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, If 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 proceeds 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, wherein, 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 first N - 1 frequency domain unit indexes 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 first N frequency domain unit indexes in the second frequency domain unit list as the frequency domain units where each retransmission in the at least two retransmissions is located; 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 sequentially determines the M frequency domain unit indexes 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 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 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 of frequency domain units M 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 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 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 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, wherein, 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 inter-frequency-domain-unit retransmission mode to the non-retransmission mode or the non-inter-frequency-domain-unit retransmission mode.

14. The repeated transmission method according to claim 13, wherein, The first value is determined based on at least one of the following: The maximum number of retransmissions; Network indication; Protocol predefined.

15. The repeated transmission method according to any one of claims 1 to 14, wherein 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; The frequency domain resources of the first transmission are within the available resource range of the frequency domain unit.

16. A retransmission device, comprising: A first determination module, configured to determine, for the terminal, the frequency domain units where each of at least two retransmissions of a first transmission is located; A first transmission module, configured to perform transmission by the terminal on the frequency domain units 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, wherein, 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 in 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 in 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 in the same time unit; A fourth retransmission mode, indicating 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 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.

18. The repeated transmission device according to claim 16 or 17, wherein 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, wherein, 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, wherein, 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 the next available frequency domain unit for transmission; The terminal defers the any repeated transmission to an available frequency domain unit corresponding to the next available time unit.

23. The repeated transmission device according to any one of claims 20 to 22, wherein 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, wherein, 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 the order of the 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, wherein, 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 the order of the 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 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 a determined frequency domain unit is available or until the last frequency domain unit in the first frequency domain unit list.

26. The repeated transmission device according to claim 24, wherein, 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 a number M of frequency domain units in the second frequency domain unit list is greater than or equal to N, the terminal determines, in the order of the 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 the 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 the 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 the number of repeated transmissions configured or indicated for the first transmission; 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, the terminal sequentially determines the M frequency domain unit indexes 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. 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, the terminal sequentially determines the M frequency domain unit indexes in the second frequency domain unit list as the frequency domain unit indexes 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 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 second frequency domain unit list, to determine the frequency domain unit indexes 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, wherein, 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 - to - frequency domain unit retransmission mode to a non - retransmission mode or a non - frequency domain unit - to - frequency domain unit retransmission mode.

28. A terminal, including a processor and a memory, where the memory stores a program or instructions that can run on the processor, and when the program or instructions are executed by the processor, the steps of the retransmission method according to any one of claims 1 to 15 are implemented.

29. A terminal, comprising a processor and a communication interface, wherein, The processor is configured to determine the frequency domain units where each of the at least two retransmissions of the first transmission is located, and the communication interface is configured to perform transmission on the frequency domain units where at least one of the at least two retransmissions is located based on the retransmission manner.

30. A readable storage medium, where a program or instructions are stored on the readable storage medium, and when the program or instructions are executed by a processor, the steps of the retransmission method according to any one of claims 1 to 15 are implemented.

31. A chip, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to run a program or an instruction to implement the steps of the repeated transmission method according to any one of claims 1 to 15.

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