Channel repeat transmission method and apparatus, and UE, network-side device and storage medium

Abstract

The present application belongs to the technical field of communications. Disclosed are a channel repeat transmission method and apparatus, and a UE, a network-side device and a storage medium. The channel repeat transmission method in the embodiments of the present application comprises: a UE acquiring configuration information for physical uplink channel repeat transmission, wherein the configuration information is used for determining an available time-frequency resource for the physical uplink channel repeat transmission; and the UE performing the physical uplink channel repeat transmission by using the available time-frequency resource, wherein the available time-frequency resource comprises at least one of the following: a UL sub-band in a DL time-domain unit where there is a synchronization signal and physical broadcast channel block (SSB), a UL sub-band in a DL time-domain unit where there is a common DL channel, a UL sub-band in a DL time-domain unit where there is no SSB or common DL channel, a UL sub-band of a UL time-domain unit, a UL time-domain unit, and a flexible time-domain unit.

Description

Channel repeated transmission method, device, UE, network side equipment and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311567506.6 filed on November 22, 2023, 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 channel repeated transmission method, apparatus, UE, network-side equipment, and storage medium. Background Art

[0004] With the advancement of communication technologies, future mobile communication systems will need to adapt to more diverse scenarios and service requirements, such as enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine type communications (mMTC). These scenarios place high demands on mobile communication systems for reliability, low latency, large bandwidth, and wide coverage. Related technologies can utilize non-overlapping full-duplex subbands to allow simultaneous uplink and downlink transmission and reception, or transmission and reception, on non-overlapping frequency subbands within a single carrier bandwidth, thereby improving transmission latency and enhancing coverage.

[0005] However, since the user equipment (UE) can only send random access response (RAR)-physical uplink shared channel (PUSCH) in uplink (UL) symbols or flexible symbols, the time domain resources available for the UE to send RAR-PUSCH are limited for network configurations that mainly use downlink (DL) services, such as the time division duplex (TDD) uplink and downlink configuration of the distributed digital data service unit (DDDSU). This results in longer transmission delays and poor coverage enhancement.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a channel retransmission method, apparatus, UE, network-side equipment, and storage medium, which can reduce UE transmission delay and improve the effect of enhanced coverage.

[0008] In a first aspect, a channel retransmission method is provided, the method comprising: a UE obtains configuration information of physical uplink channel retransmission, the configuration information being used to determine available time-frequency resources for physical uplink channel retransmission; the UE uses the available time-frequency resources to perform physical uplink channel retransmission; wherein the available time-frequency resources include at least one of the following: a UL subband in a DL time domain unit in which a synchronization signal and a physical broadcast channel SSB exist; a UL subband in a DL time domain unit in which a common DL channel exists; a UL subband in a DL time domain unit in which no SSB or common DL channel exists; a UL subband of a UL time domain unit; a UL time domain unit; a flexible time domain unit.

[0009] In a second aspect, a channel retransmission method is provided, which includes: a network-side device sends configuration information of physical uplink channel retransmission to a UE, and the configuration information is used to determine available time-frequency resources for physical uplink channel retransmission; wherein the available time-frequency resources include at least one of the following: a UL subband in a DL time domain unit in which a synchronization signal and a physical broadcast channel SSB exist; a UL subband in a DL time domain unit in which a common DL channel exists; a UL subband in a DL time domain unit in which no SSB or common DL channel exists; a UL subband of a UL time domain unit; a UL time domain unit; and a flexible time domain unit.

[0010] According to a third aspect, a channel retransmission device is provided, which includes: an acquisition module and a transmission module; the acquisition module is used to acquire configuration information of physical uplink channel retransmission, and the configuration information is used to determine available time-frequency resources for physical uplink channel retransmission; the transmission module is used to use available time-frequency resources to perform physical uplink channel retransmission; wherein the available time-frequency resources include at least one of the following: a UL subband in a DL time domain unit where a synchronization signal and a physical broadcast channel SSB exist; a UL subband in a DL time domain unit where a common DL channel exists; a UL subband in a DL time domain unit where no SSB or common DL channel exists; a UL subband of a UL time domain unit; a UL time domain unit; and a flexible time domain unit.

[0011] In a fourth aspect, a channel retransmission device is provided, which includes: a sending module; a sending module for sending configuration information of physical uplink channel retransmission to the UE, the configuration information being used to determine available time-frequency resources for physical uplink channel retransmission; wherein the available time-frequency resources include at least one of the following: a UL subband in a DL time domain unit in which a synchronization signal and a physical broadcast channel SSB exist; a UL subband in a DL time domain unit in which a common DL channel exists; a UL subband in a DL time domain unit in which no SSB or common DL channel exists; a UL subband of a UL time domain unit; a UL time domain unit; a flexible time domain unit.

[0012] In a fifth aspect, a UE is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented.

[0013] In the sixth aspect, a UE is provided, including a processor and a communication interface, wherein the processor is used to obtain configuration information of repeated transmission of a physical uplink channel; and the communication interface is used to use available time-frequency resources to perform repeated transmission of the physical uplink channel.

[0014] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0015] In an eighth aspect, a network side device is provided, comprising a processor and a communication interface, wherein the communication interface is used to send configuration information of repeated transmission of a physical uplink channel to a UE.

[0016] In the ninth 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, or the steps of the method described in the second aspect are implemented.

[0017] In the tenth aspect, a channel retransmission system is provided, comprising: a UE and a network side device, wherein the UE can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0018] In the eleventh aspect, a chip is provided, 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 the method as described in the first aspect, or to implement the method as described in the second aspect.

[0019] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0020] In an embodiment of the present application, the UE obtains configuration information for repeated transmission of the physical uplink channel, and the configuration information is used to determine the available time-frequency resources for repeated transmission of the physical uplink channel; the UE uses the available time-frequency resources to perform repeated transmission of the physical uplink channel; wherein the available time-frequency resources include at least one of the following: a UL subband in a DL time domain unit in which a synchronization signal and a physical broadcast channel SSB exist; a UL subband in a DL time domain unit in which a common DL channel exists; a UL subband in a DL time domain unit in which no SSB or common DL channel exists; a UL subband in a UL time domain unit; a UL time domain unit; a flexible time domain unit. Through this solution, since the available time-frequency resources for repeated transmission of the physical uplink channel can be determined by the configuration information for repeated transmission of the physical uplink channel, the UE can use the available time-frequency resources determined according to the configuration information for data transmission, thereby improving the utilization efficiency of the UE transmission resources, thereby reducing the UE transmission delay and improving the effect of enhanced coverage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of a possible structure of a communication system involved in an embodiment of the present invention;

[0022] FIG2(A) is one of the schematic diagrams of sub-band division in a full-duplex scenario provided in an embodiment of the present application;

[0023] FIG2(B) is a second schematic diagram of sub-band division in a full-duplex scenario provided by an embodiment of the present application;

[0024] FIG3 is a flow chart of a method for repeated channel transmission according to an embodiment of the present application;

[0025] FIG4 is a schematic diagram of configuring available time-frequency resources provided in an embodiment of the present application;

[0026] FIG5 is a second flow chart of a channel repeated transmission method provided in an embodiment of the present application;

[0027] FIG6(A) is a schematic diagram of a transmit power threshold configured by a network-side device according to an embodiment of the present application;

[0028] FIG6(B) is a second schematic diagram of a transmit power threshold value configured by a network-side device according to an embodiment of the present application;

[0029] FIG7(A) is a schematic diagram of a frequency domain distance satisfying a first frequency domain distance threshold provided by an embodiment of the present application;

[0030] 7(B), 7(C) and 7(D) are schematic diagrams of performing physical uplink channel transmission on uplink available resource blocks (RBs) according to an embodiment of the present application;

[0031] FIG8 is a third flow chart of a channel repeated transmission method provided in an embodiment of the present application;

[0032] FIG9 is a fourth flow chart of a channel repetitive transmission method provided in an embodiment of the present application;

[0033] FIG10 is a schematic diagram of a structure of a channel repeated transmission device according to an embodiment of the present application;

[0034] FIG11 is a second structural diagram of a channel repeated transmission device provided in an embodiment of the present application;

[0035] FIG12 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0036] FIG13 is a schematic diagram of the hardware structure of a UE provided in an embodiment of the present application;

[0037] FIG14 is a schematic diagram of the hardware structure of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] 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.

[0039] 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 one or more. 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 but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0040] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication 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, etc. based on the judgment result.

[0041] 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.

[0042] FIG1 shows a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a UE 11 and a network-side device 12. The UE 11 can be a mobile phone, a tablet computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a ship-borne device, a pedestrian user equipment (PUE), a smart home (a household appliance with wireless communication capabilities, such as a refrigerator, a television, a washing machine, or furniture), a game console, a personal computer (PC), a teller machine, or a self-service machine, or other terminal-side device. 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. In addition to the above-mentioned terminal devices, it can also be a chip in the terminal, such as a modem chip, a system-on-chip (SoC). It should be noted that the specific type of UE11 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 (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 (AS) 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 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.

[0043] Some terms and nouns involved in the embodiments of this application are explained below.

[0044] 1. PUSCH retransmission: An enhanced technology based on the number of retransmissions available in uplink time slots.

[0045] 2. Time domain unit: the time unit with the smallest granularity.

[0046] 3. Full-duplex mode: allows data to be transmitted in both directions simultaneously. It is equivalent to the combination of two simplex communication modes in terms of capability. In other words, full-duplex mode means that signals can be transmitted in both directions at the same time.

[0047] It should be noted that network full-duplex mode refers to full-duplex mode on the network side and half-duplex mode on the UE side. UE full-duplex mode also refers to full-duplex mode on the network side and full-duplex mode on the UE side. It can be understood that network full-duplex mode can achieve enhanced coverage, reduced transmission latency, and improved resource utilization efficiency; while UE full-duplex mode can achieve the above gains while also improving DL (UL) throughput.

[0048] It should be noted that half-duplex mode on the UE side means that the UE can only receive DL or transmit UL signals or channels in one time domain unit. Full-duplex mode on the UE side means that the UE can simultaneously receive DL and transmit UL signals or channels in one time domain unit.

[0049] 4. Guard Band (GB): A guard band is typically reserved between uplink (UL) and downlink (DL) transmissions, for example, to achieve frequency isolation and reduce self-interference. UEs typically have weaker self-interference mitigation capabilities than network equipment. Therefore, for simultaneous transmission and reception on the UE side, the number of GBs reserved must be greater than that of the network side equipment, requiring more physical resource blocks (PRBs) to serve as guard bands.

[0050] For example, when a network device transmits data using at least two of the UL subband, DL subband, and GB, the network device can receive the UE's UL channel or signal in the UL subband; and can transmit a DL channel or signal to the UE in the DL subband. DL transmission can cause self-interference on UL reception. Alternatively, when a UE transmits data using at least two of the UL subband, DL subband, and GB, the UE's UL transmission can cause self-interference on DL reception.

[0051] It is understandable that different UEs have different capabilities and therefore need to reserve different GBs.

[0052] 5. Flexible time domain unit: A time domain unit that can be used for both DL and UL transmission.

[0053] The channel retransmission method, apparatus, UE, network-side equipment, and storage medium provided in the embodiments of the present application are described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0054] The channel retransmission method, apparatus, UE, network-side equipment and storage medium provided in the embodiments of the present application can be applied to scenarios of physical uplink channel retransmission. Among them, physical uplink channel retransmission can include scenarios of special PUSCH (special PUSCH) and scenarios of physical uplink control channel (Physical Uplink Control Channel, PUCCH) retransmission. For special PUSCH, the special PUSCH may include but is not limited to: message (Message, Msg) A PUSCH, Msg3PUSCH, PUSCH retransmission scheduled by RAR in contention-based random access, PUSCH retransmission scheduled by RAR in Contention Free Random Access in non-competitive random access (PUSCH scheduled by RAR in Contention Free Random Access), Msg5 PUSCH, any other PUSCH transmission before the radio resource control (Radio Resource Control, RRC) connection and any other PUSCH transmission before receiving the UE capability report. For PUCCH, the PUCCH repeated transmission may include but is not limited to: a special PUCCH configured with only common PUCCH resources and no dedicated PUCCH resources, such as a PUCCH carrying an ACK response for successfully receiving a Msg4 message.

[0055] It should be noted that the above-mentioned Msg5 PUSCH can be used by the network to schedule the UE to send the PUSCH with RRC settings completed.

[0056] With the development of communication technologies, future mobile communication systems will need to adapt to more diverse scenarios and service requirements, such as eMBB, URLLC, and mMTC. These scenarios place high demands on the system for high reliability, low latency, large bandwidth, and wide coverage. In related technologies, subband non-overlapping full-duplex (SFD) can be used to improve transmission latency and enhance coverage when transmitting data between UE and network devices.

[0057] Specifically, for a DL time slot, such as a DL time slot configured by Time Division Duplex (TDD)-UL-DL-Configuration Common or a DL time slot configured by TDD-UL-DL-Configuration Dedicated, the network-side device can configure a DL bandwidth part (Bandwidth Part, BWP) for the UE. For example, as shown in FIG2(A), the network-side device can configure a DL BWP for the UE, namely, DL time slot 1; or, the network-side device can also configure a DL BWP and a UL subband for the UE, namely, DL time slot 2.

[0058] For UL time slots, such as those configured by TDD-UL-DL-Configuration Common or TDD-UL-DL-Configuration Dedicated, the network device can configure a UL BWP for the UE. For example, as shown in Figure 2(B), the network device can configure a UL BWP for the UE, namely, UL time slot 3; alternatively, the network device can also configure a UL BWP and a DL subband for the UE, namely, UL time slot 4.

[0059] Typically, a full-duplex subband (SBFD) consists of one resource block (RB) or a set of consecutive RBs with the same transmission direction. The time-domain unit used by network-side devices for SBFD operations, such as a timeslot or symbol, is called an SBFD time-domain unit.

[0060] For the 15th standard (Release 15, Rel-15) completed by 3GPP, network-side devices and UEs can only send or receive data within a time domain unit. However, for the 18th standard (Release 18, Rel-18) completed by 3GPP, network-side devices can transmit data in full-duplex mode, meaning they can send and receive data simultaneously; while UEs can only use half-duplex mode, meaning they can only send or receive data within a time domain unit.

[0061] Although full-duplex operation on the UE side allows the network equipment and the UE to transmit and receive data simultaneously, simultaneous UL reception and DL transmission can cause self-interference. Therefore, to ensure transmission in the interfered direction, the UE must have self-interference cancellation capabilities, such as reserving a guard band between the DL and UL frequency bands. While this can eliminate the self-interference caused by simultaneous data transmission and reception, it also reduces UE throughput.

[0062] Currently, UEs can only transmit RAR-PUSCH in semi-statically configured UL symbols or flexible symbols. For a network configuration focused on DL services, such as the TDD uplink / downlink configuration of DDDSU, the time domain resources available for UE RAR-PUSCH transmission are limited, which is detrimental to transmission latency and coverage. This results in longer transmission latency and poor coverage enhancement.

[0063] In the channel retransmission method, apparatus, UE, network-side device, and storage medium provided in the embodiments of the present application, the subband for PUSCH retransmission by the UE can be configured semi-statically through the network-side device. Therefore, the UE can use the available time-frequency resources determined according to the semi-static configuration for data transmission, thereby improving the utilization efficiency of the UE's transmission resources, thereby reducing UE transmission delay and improving the effect of enhanced coverage.

[0064] FIG3 shows a flow chart of a channel retransmission method provided in an embodiment of the present application. As shown in FIG3 , the calling method may include the following steps 200 and 201 .

[0065] Step 200: The UE obtains configuration information of repeated transmission of the physical uplink channel.

[0066] The above configuration information is used to determine available time-frequency resources for repeated transmission of the physical uplink channel.

[0067] Step 201: The UE uses available time-frequency resources to perform repeated transmission of a physical uplink channel.

[0068] The available time-frequency resources include at least one of the following: a UL subband in a DL time-domain unit in which a synchronization signal and a physical broadcast channel (SSB) exist; a UL subband in a DL time-domain unit in which a common DL channel exists; a UL subband in a DL time-domain unit in which no SSB or common DL channel exists; a UL subband in one UL time-domain unit; one UL time-domain unit; or a flexible time-domain unit. Optionally, the time-frequency resources of the UL subband can be configured via cell-level signaling.

[0069] In the embodiment of the present application, the above-mentioned physical uplink channel repeated transmission can be PUSCH repeated transmission or PUCCH repeated transmission.

[0070] Optionally, in an embodiment of the present application, the configuration information for repeated transmission of the above-mentioned physical uplink channel may be a semi-static configuration parameter configured by a network-side device.

[0071] Optionally, in an embodiment of the present application, the UE may determine available time-frequency resources for repeated transmission of a physical uplink channel based on semi-statically configured parameters, and the semi-static configuration may be used to configure a subband for repeated transmission for the UE.

[0072] Exemplarily, the UE may determine a subband for repeated transmission of the physical uplink channel based on semi-statically configured parameters.

[0073] It can be understood that the repeated transmission of the physical uplink channel can be used to improve the reliability of UE transmission resources.

[0074] Optionally, in an embodiment of the present application, the number of repeated transmissions of the above-mentioned physical uplink channel may be a positive integer greater than or equal to 1.

[0075] It should be noted that the configuration information of repeated transmission of the above-mentioned physical uplink channel can instruct the network side device to provide the parameters required for data transmission to the UE in advance, rather than dynamically sending the parameters.

[0076] Optionally, in an embodiment of the present application, the UE uses available time-frequency resources to perform repeated transmission of the physical uplink channel, which can be expressed as: the UE can use available time-frequency resources to simultaneously transmit UL and DL data in one time domain unit.

[0077] Optionally, in an embodiment of the present application, the network side device can configure a specific sequence (Preamble) for the UE and use the sequence as a physical uplink channel retransmission request. When the UE determines that physical uplink channel retransmission is required, it can use these specific sequences to request physical uplink channel retransmission.

[0078] Optionally, in the embodiment of the present application, the above sequence may be located at a random access opportunity (Rach Occasion, RO) of an SBFD time domain unit, or may be located at a RO of an UL time domain unit.

[0079] Optionally, in an embodiment of the present application, the above-mentioned available time-frequency resources may include at least one of the following: time-frequency resources of a UL subband configured in a DL time domain unit in which an SSB exists; time-frequency resources of a UL subband configured in a DL time domain unit in which a common DL channel exists; time-frequency resources of a UL subband configured in a DL time domain unit in which no SSB or common DL channel exists; time-frequency resources of a UL subband configured in a UL time domain unit; time-frequency resources configured in a UL time domain unit.

[0080] Optionally, the available time-frequency resources may also include non-DL subbands in the flexible time domain unit and UL subbands in the flexible time domain unit. For simplicity, no further expansion is made here.

[0081] Optionally, in an embodiment of the present application, for an SBFD time domain unit type, the network side device may configure at least one frequency domain size type of UL subband, DL subband, GB of the network side device, and GB of the UE side.

[0082] It can be understood that the time domain unit type used for special PUSCH repeated transmission may include at least one of the following types: a DL symbol configured with a UL subband; a UL symbol configured with a DL subband; and a UL symbol.

[0083] Optionally, in an embodiment of the present application, for the repeated transmission configured for special PUSCH, as shown in Figure 4, the available time-frequency resources include the following two types of UL resources: UL subbands in UL time domain units or DL ​​time domain units, such as type 1, type 2 and type 3 shown in Figure 4; UL time domain units without configured DL subbands, such as type 4 shown in Figure 4.

[0084] Furthermore, the available time-frequency resources configured for repeated transmission of the special PUSCH can be further divided according to whether they overlap with the SSB or the common DL channel: the time-frequency resources of the UL subband configured in a DL time domain unit where an SSB exists and the time-frequency resources of the UL subband configured in a DL time domain unit where a common DL channel exists, as shown in 1 of Figure 4. In this case, the UL resources overlap with the SSB or the common DL channel in time domain. The uplink transmission of the UE will interfere with the reception of the SSB of other UEs, that is, cross-link interference will occur. In addition, if the UE uses the SSB to measure or decode the common DL channel, self-interference will also be generated.

[0085] The time-frequency resources of the UL subband are configured in a DL time-domain unit where no SSB or common DL channel exists, as shown in Figure 4 (2). In this case, the UL resources do not overlap with the SSB or common DL channel time domain. The UE's uplink transmission may interfere with the reception of DL channels or signals such as PDCCH, PDSCH, and reference signals (Channel State Information-Reference Signal, CSI-RS) by other UEs.

[0086] The time-frequency resources of the UL subband configured in a UL time-domain unit are shown in Figure 3 in Figure 4. The interference generated is similar to the time-frequency resources of the UL subband configured in a DL time-domain unit without SSB or common DL channels. To avoid repetition, this description is not repeated here.

[0087] The time-frequency resources configured in one UL time domain unit are shown as 4 in FIG4 . In this case, there is no cross-link interference and self-interference in the uplink transmission of the UE.

[0088] In this way, the UE can use the available time-frequency resources determined according to the semi-static configuration for data transmission while avoiding interference as much as possible, thereby improving the utilization efficiency of UE transmission resources, thereby reducing UE transmission delay and improving the effect of enhanced coverage.

[0089] The channel retransmission method provided in the embodiments of the present application can determine the available time-frequency resources for physical uplink channel retransmission based on the configuration information for physical uplink channel retransmission. Therefore, the UE can use the available time-frequency resources determined based on the configuration information for data transmission, thereby improving the utilization efficiency of UE transmission resources, thereby reducing UE transmission delay and improving the effect of enhanced coverage.

[0090] Optionally, in the embodiment of the present application, in combination with FIG3 , as shown in FIG5 , the above step 200 may include the following step 200a.

[0091] Step 200a: The UE receives configuration information of repeated transmission of a physical uplink channel from a network-side device.

[0092] Optionally, in an embodiment of the present application, the UE may receive configuration information of repeated transmission of the physical uplink channel from a network side device to determine available time-frequency resources, thereby using the available time-frequency resources to perform repeated transmission of the physical uplink channel.

[0093] For example, assuming that the network side device indicates that the number of special PUSCH repetition transmissions is K, the UE may use available time-frequency resources to perform K repetitions of the physical uplink channel.

[0094] Optionally, in an embodiment of the present application, if a certain time-frequency resource is unavailable during repeated transmission of the physical uplink channel, the UE may continue to search for the next available time-frequency resource for transmission.

[0095] Optionally, in an embodiment of the present application, the UE may receive semi-statically configured parameters sent by a network-side device from public or proprietary signaling.

[0096] Exemplarily, the UE may receive configuration information of repeated transmission of the physical uplink channel sent by a network-side device from a system information block (SIB).

[0097] For example, taking the configuration information for repeated transmission of the physical uplink channel as a semi-statically configured parameter as an example, the UE may receive the semi-statically configured parameter sent by the network side device through the RRC connection.

[0098] In this way, after receiving the configuration information of repeated transmission of the physical uplink channel sent by the network side device, the UE can determine the available time and frequency resources based on the parameters of the semi-static configuration, so as to carry out data transmission, improve the utilization efficiency of the UE transmission resources, thereby reducing the UE transmission delay and improving the effect of enhanced coverage.

[0099] Optionally, in an embodiment of the present application, the above-mentioned configuration information may include at least one of the following: a UL subband located in a DL time domain unit; a UL subband located in a UL time domain unit; time-frequency resources in an available UL subband configured by a network-side device; a transmit power threshold value configured by a network-side device for different UL resource types or UL resources; a first frequency domain distance threshold; a second frequency domain distance threshold; a time interval threshold; a UL time domain unit; and time-frequency resources in a flexible time domain unit determined according to predefined rules.

[0100] In which, the above-mentioned predefined rules may include at least one of the following: when the flexible time domain unit is configured with a DL subband and no UL subband is configured, determining the time-frequency resources outside the DL subband as available time-frequency resources; when the flexible time domain unit is configured with a UL subband and the transmission power of the UL subband is less than the first transmission power threshold value, determining the time-frequency resources in the configured UL subband in the flexible time domain unit as available time-frequency resources; when the flexible time domain unit is not configured with a DL subband and no UL subband is configured, determining the time domain unit with a transmission power less than the second transmission power threshold value as an available time-frequency resource.

[0101] Optionally, in an embodiment of the present application, when the configuration information includes at least one of a UL subband of a DL time domain unit, a UL subband located in a UL time domain unit, and a UL time domain unit, the UE can directly perform physical uplink channel retransmission through a UL subband located in a DL time domain unit, a UL subband located in a UL time domain unit, or a UL time domain unit.

[0102] Optionally, in an embodiment of the present application, the above-mentioned physical uplink channel may include: a transmission power threshold value.

[0103] Optionally, in an embodiment of the present application, before the above step 201, the channel repeated transmission method provided in the embodiment of the present application may further include the following step 203.

[0104] Step 203: When the transmit power of the first UL subband is less than or equal to the transmit power threshold corresponding to the first UL subband, the UE determines that the time-frequency resources configured in the first UL subband are available time-frequency resources.

[0105] The first UL subband may include at least one UL subband in a time domain unit of the UE.

[0106] Optionally, in an embodiment of the present application, the network side device may configure different transmit power thresholds for different UL resource types or UL resources, so that the UE may determine the available time-frequency resources for repeated transmission of the special PUSCH according to the transmit power thresholds.

[0107] Optionally, in the embodiments of the present application, if the UL transmit power transmitted by the UL sub-band is relatively high, it will cause relatively high cross-link interference to the synchronization signals and physical broadcast channel blocks (SSB) or DL signals of other UEs. This is not conducive to other UEs receiving information such as SSB, other key DL control channels, and DL data channels, and may even affect the access and normal communication of other UEs. Moreover, if the UE also uses the SSB or DL channel for measurement and reception at the same time, strong self-interference will also be generated. Therefore, by setting the transmit power threshold of the UL resource type, the UL transmit power transmitted by the UL sub-band can be controlled to avoid cross-link interference and self-interference.

[0108] It can be understood that if the transmit power of the special PUSCH retransmission is lower than the transmit power threshold of the UL resource type, the UE can determine that the time-frequency resource where the UL resource is located is an available time-frequency resource. If the transmit power of the special PUSCH retransmission is higher than the transmit power threshold of the UL resource type, the UE can determine that the time-frequency resource where the UL resource is located is an unavailable time-frequency resource.

[0109] Exemplarily, taking the UL resource type including UL resource type 1, UL resource type 2, UL resource type 3, and UL resource type 4, and the transmit power threshold of UL resource type 1 being A, the transmit power threshold of UL resource type 2 being B, the transmit power threshold of UL resource type 3 being C, and the transmit power threshold of UL resource type 4 being D as an example. Assuming A < B < C < D, or A < B = C < D, then, as shown in FIGS. 6(A) and 6(B),

[0110] If the transmit power threshold configured by the network-side device is less than A, all 4 time slots shown in FIG. 6(A) are available time slots, and the UE can use the time-frequency resources where the 4 time slots are located for retransmission.

[0111] If the transmit power threshold configured by the network-side device is greater than B and less than D, the UL sub-bands where time slot 2 and time slot 3 shown in FIG. 6(B) are located are unavailable time-frequency resources. The UE can determine the available time-frequency resources for physical uplink channel retransmission in the next time-frequency resource, that is, determine the UL resources where time slot 4, time slot 5, and time slot 6 shown in FIG. 6(B) are located as available time-frequency resources for retransmission.

[0112] It should be noted that for the time-domain resources and frequency-domain resources of the RAR-PUSCH retransmission in each time-domain unit, it can be configured according to the network-side device. The same time-frequency resources are used for transmission.

[0113] In this way, different transmit power thresholds can be configured for repeated transmission of the special PUSCH in the UL subband, so that the UE uses available time-frequency resources less than the transmit power threshold for repeated transmission of the special PUSCH, thereby reducing cross-link interference and self-interference.

[0114] Optionally, in an embodiment of the present application, the above configuration information may include: a first frequency domain distance threshold.

[0115] Optionally, in an embodiment of the present application, before the above step 201, the channel repeated transmission method provided in the embodiment of the present application may further include the following step 204.

[0116] Step 204: When the frequency domain distance between the second UL subband in the first time domain unit and the first GB in the first time domain unit is greater than or equal to the first frequency domain distance threshold, the UE determines that the time-frequency resources configured in the second UL subband are available time-frequency resources.

[0117] Optionally, in an embodiment of the present application, the first time domain unit may be any time domain unit of the UE.

[0118] Optionally, in an embodiment of the present application, the first GB is a GB in a first time domain unit.

[0119] Optionally, in the embodiment of the present application, the second UL subband is a UL subband in the first time domain unit. The second UL subband may be the same as or different from the first UL subband.

[0120] Optionally, in an embodiment of the present application, the network side device can configure the first frequency domain distance threshold between the second UL subband in the first time domain unit and the first GB in the first time domain unit through configuration information, so that the UE may not use the UL subband closer to the first GB in the first time domain unit for repeated transmission of the physical uplink channel, thereby avoiding interference during full-duplex transmission on the UE side.

[0121] Exemplarily, as shown in Figure 7(A), the frequency domain distance between UL subband 71 and GB is less than the first frequency domain distance threshold, and the UE can determine that the time-frequency resources in UL subband 71 are available time-frequency resources; and the frequency domain distance between UL subband 72 and GB is greater than or equal to the first frequency domain distance threshold, and the UE can determine that the time-frequency resources in UL subband 72 are available time-frequency resources.

[0122] In this way, the first frequency domain distance threshold configured by the network side device can make the available time-frequency resources used by the UE farther away from the GB (or DL ​​subband) in the same time domain unit, thereby reducing the interference generated during full-duplex transmission on the UE side and reducing cross-link interference to other UEs.

[0123] If the frequency domain distance between a part of the resources for repeated transmission of a special PUSCH and the GB is less than the first frequency domain distance threshold, then the resource is an unavailable time-frequency resource.

[0124] Optionally, in an embodiment of the present application, the above configuration information may include: a second frequency domain distance threshold.

[0125] Optionally, in an embodiment of the present application, before the above step 201, the channel repeated transmission method provided in the embodiment of the present application may further include the following step 205.

[0126] Step 205: When the frequency domain distance between the third UL subband in the second time domain unit and the first DL subband in the second time domain unit is greater than or equal to the second frequency domain distance threshold, the UE determines that the time-frequency resources configured in the third UL subband are available time-frequency resources.

[0127] Optionally, in an embodiment of the present application, the second time domain unit may be any time domain unit of the UE.

[0128] Optionally, in an embodiment of the present application, the second time domain unit and the first time domain unit may be the same as or different from each other.

[0129] Optionally, in an embodiment of the present application, the third UL subband and the first UL subband may be the same as or different from each other.

[0130] Optionally, in an embodiment of the present application, the network side device can configure a second frequency domain distance threshold between the third UL subband in the second time domain unit and the first DL subband in the second time domain unit through semi-static configuration, so that the UE may not use the UL subband that is closer to the first DL subband in the second time domain unit for physical uplink channel retransmission, thereby avoiding interference during full-duplex transmission on the UE side and reducing cross-link interference to other UEs.

[0131] In this way, the second frequency domain distance threshold configured by the network side device can make the available time-frequency resources used by the UE farther away from the DL subband in the same time domain unit, thereby reducing the interference generated during full-duplex transmission on the UE side and reducing cross-link interference to other UEs.

[0132] Optionally, in an embodiment of the present application, the above configuration information may include: a time interval threshold.

[0133] Optionally, in an embodiment of the present application, before the above step 201, the channel repeated transmission method provided in the embodiment of the present application may further include the following step 206.

[0134] Step 206: When the time interval between the fourth UL subband in the third time domain unit and the first downlink signal in the third time domain unit is greater than or equal to the time interval threshold, the UE determines that the time-frequency resources configured in the fourth UL subband are available time-frequency resources.

[0135] Optionally, in an embodiment of the present application, the above-mentioned first downlink signal may include at least one of the following: a synchronization signal; a broadcast signal; a system information channel; and a control channel for scheduling system information.

[0136] Optionally, in an embodiment of the present application, the third time domain unit may be any time domain unit of the UE.

[0137] Optionally, in an embodiment of the present application, the third time domain unit and the first time domain unit may be the same or different.

[0138] Optionally, in an embodiment of the present application, the fourth UL subband and the first UL subband may be the same as or different from each other.

[0139] Optionally, in an embodiment of the present application, if at least part of the downlink signal is transmitted on the bandwidth of the UL subband in a certain time domain unit, the UE can determine that the time-frequency resources configured in the UL subband are unavailable time-frequency resources; or, the UE can determine it as an erroneous configuration and thus not use the UL subband for repeated transmission.

[0140] Optionally, in an embodiment of the present application, the above-mentioned system information channel may include but is not limited to: SIB1 Physical Downlink Shared Channel (PDSCH).

[0141] Optionally, in an embodiment of the present application, the control channel for scheduling the system information may include but is not limited to: a physical downlink control channel (PDCCH) for scheduling SIB1 PDSCH.

[0142] Optionally, in an embodiment of the present application, the time interval between the fourth UL subband and the downlink signal may include: the time interval between the start symbol of the fourth UL subband and the first downlink signal, or the time interval between the end symbol of the fourth UL subband and the first downlink signal.

[0143] In this way, the time interval threshold between the UL subband and the downlink signal in the same time domain unit configured by the network side device can ensure that the half-duplex UE has sufficient UL and DL switching time.

[0144] Optionally, in an embodiment of the present application, the above-mentioned predefined rules may include at least one of the following: when the flexible time domain unit is configured with a DL subband and no UL subband is configured, determining that the time-frequency resources outside the DL subband are available time-frequency resources; when the flexible time domain unit is configured with a UL subband and the transmission power of the UL subband is less than a first transmission power threshold value, determining that the time-frequency resources in the configured UL subband in the flexible time domain unit are available time-frequency resources; when the flexible time domain unit is not configured with a DL subband and no UL subband is configured, determining that the time domain unit with a transmission power less than a second transmission power threshold value is an available time-frequency resource.

[0145] Optionally, in an embodiment of the present application, the UE may determine available time-frequency resources in a flexible time domain unit according to predefined rules.

[0146] Exemplarily, if the flexible time domain unit is configured with a DL subband and not with a UL subband, the UE may determine that the time-frequency resources outside the DL subband are available time-frequency resources, and the UE adopts the transmit power threshold value of the time-frequency resources outside the DL subband as the transmit power threshold value B or C of the UL time domain unit. If the flexible time domain unit is configured with a UL subband and the transmit power of the UL subband is greater than or equal to the transmit power threshold value B or C, the UE may determine that the time-frequency resources in the configured UL subband in the flexible time domain unit are available time-frequency resources. If the flexible time domain unit is not configured with a DL subband and not configured with a UL subband, the UE may determine that the time domain unit with a transmit power less than the transmit power threshold value D is an available time-frequency resource.

[0147] Optionally, in an embodiment of the present application, the first transmit power threshold value and the second transmit power threshold value may be configured by a network-side device.

[0148] Optionally, in an embodiment of the present application, the first transmit power threshold value and the second transmit power threshold value may be the same or different.

[0149] In this way, the UE can use the available time-frequency resources in the flexible time domain unit for repeated transmission according to predefined rules, thereby improving the utilization efficiency of UE transmission resources, thereby reducing UE transmission delay and improving the effect of enhanced coverage.

[0150] Optionally, in an embodiment of the present application, the above configuration information can be used to indicate that at least one of the following is an unavailable time-frequency resource: time-frequency resources in a semi-statically configured DL time domain unit; time-frequency resources in a semi-statically configured DL subband; time-frequency resources in a semi-statically configured full-duplex GB of a network-side device; time-frequency resources in a semi-statically configured full-duplex GB of a terminal-side device.

[0151] Optionally, in the embodiment of the present application, the time-frequency resources in the DL subband in the repeated transmission of the fixed physical uplink channel may also include the DL subband in the flexible time domain unit.

[0152] Optionally, in an embodiment of the present application, the UE may determine unavailable time-frequency resources in the repeated transmission of the physical uplink channel according to the configuration information of the repeated transmission of the physical uplink channel sent by the network side device.

[0153] It can be understood that for time-frequency resources spanning different symbol types, if the time-frequency resources meet predefined rules or are time-frequency resources in the available UL subband configured for the network side device, the UE can also determine them as available time-frequency resources.

[0154] Exemplarily, assuming that a time-frequency resource occupies a UL subband and a UL symbol, and both the UL subband and the UL symbol are available time-frequency resources, the UE may determine the time-frequency resource as an available time-frequency resource for transmitting repeated physical uplink channel transmissions.

[0155] Optionally, in an embodiment of the present application, the network side device may also determine other time-frequency resources as unavailable time-frequency resources through configuration information repeatedly transmitted through the physical uplink channel to ensure the reliability of the available time-frequency resources determined by the UE.

[0156] Exemplarily, the network-side device may configure the UL resource type used for special PUSCH repeated transmission, that is, indicate whether a UL resource type is used for special PUSCH repeated transmission.

[0157] For example, as shown in Figure 4, the network device can use a bitmap to configure the UL resource types for special PUSCH retransmission to be Type 2, Type 3, and Type 4. Type 1 UL subbands are unavailable time-frequency resources. Therefore, the UE will not use Type 1 UL resource type for special PUSCH retransmission.

[0158] Exemplarily, the network-side device may further configure certain UL subbands or UL time domain units to not allow special PUSCH transmission.

[0159] Optionally, in an embodiment of the present application, when the frequency domain resources for repeated transmission of the physical uplink channel exceed the frequency domain resource size of the UL subband, the network-side device may also configure the UL subband as an unavailable time-frequency resource. In this case, the UE may use puncturing or rate matching to obtain the frequency domain resources of the UL subband that can carry the frequency domain resources for repeated transmission of the physical uplink channel, and then determine the UL subband as an available time-frequency resource.

[0160] In this way, the UE can determine the unavailable time-frequency resources based on the configuration information of repeated transmission of the physical uplink channel sent by the network side device, thereby ensuring the reliability of the available time-frequency resources determined by the UE.

[0161] FIG8 shows a flow chart of a channel retransmission method provided in an embodiment of the present application. As shown in FIG8 , the channel retransmission method may include the following step 301 .

[0162] Step 301: The network side device sends configuration information of repeated transmission of the physical uplink channel to the UE.

[0163] The above configuration information is used to determine available time-frequency resources for repeated transmission of the physical uplink channel.

[0164] In an embodiment of the present application, the above-mentioned available time-frequency resources may include at least one of the following: a UL subband in a DL time domain unit in which a synchronization signal and a physical broadcast channel SSB exist; a UL subband in a DL time domain unit in which a common DL channel exists; a UL subband in a DL time domain unit in which no SSB or common DL channel exists; a UL subband of a UL time domain unit; a UL time domain unit; a flexible time domain unit.

[0165] Optionally, in an embodiment of the present application, the network side device may send configuration information of repeated transmission of the physical uplink channel to the UE through public signaling or dedicated channels such as SIB or RRC connection.

[0166] Optionally, in the embodiment of the present application, the configuration information may include at least one of the following:

[0167] UL subband located in the downlink DL time domain unit;

[0168] A UL subband located in a UL time domain unit;

[0169] Time-frequency resources of available UL sub-bands configured by network-side equipment;

[0170] The transmit power thresholds configured by the network side device for different UL resource types or UL resources;

[0171] a first frequency domain distance threshold;

[0172] a second frequency domain distance threshold;

[0173] Time interval threshold.

[0174] UL time domain unit;

[0175] The time-frequency resources in the flexible time-domain unit are determined according to predefined rules.

[0176] The above predefined rules may include at least one of the following:

[0177] When the flexible time domain unit is configured with a DL subband and is not configured with a UL subband, determining time-frequency resources outside the DL subband as available time-frequency resources;

[0178] When the flexible time domain unit is configured with a UL subband and the transmit power of the UL subband is less than a first transmit power threshold, determining that the time-frequency resources in the configured UL subband in the flexible time domain unit are available time-frequency resources;

[0179] In a case where the flexible time domain unit is not configured with a DL subband and is not configured with a UL subband, a time domain unit having a transmit power less than a second transmit power threshold is determined as an available time-frequency resource.

[0180] It should be noted that for a specific introduction to the parameters of the above-mentioned semi-static configuration, please refer to the detailed description in the previous text. To avoid repetition, it will not be repeated here.

[0181] The channel retransmission method provided in the embodiments of the present application can configure the available time-frequency resources for physical uplink channel retransmission on the UE by using the configuration information for physical uplink channel retransmission sent by the network-side device. Therefore, the UE can use the available time-frequency resources determined based on the configuration information for data transmission, thereby improving the utilization efficiency of the UE's transmission resources, thereby reducing UE transmission delay and improving the effect of enhanced coverage.

[0182] Each of the above-mentioned method embodiments, or various possible implementation methods in each method embodiment, can be executed separately, or any two or more of them can be executed in combination with each other. The specific implementation can be determined according to actual usage requirements, and the embodiments of this application do not limit this.

[0183] The following uses the network side device as a base station, the physical uplink channel retransmission as RAR-PUSCH retransmission, and the configuration information of the physical uplink channel retransmission as a semi-static configuration parameter as an example to illustrate the channel retransmission method provided in the embodiment of the present application.

[0184] As shown in FIG9 , the channel repeated transmission method provided in an embodiment of the present application includes the following steps 401 to 405 .

[0185] Step 401: The UE requests the base station to transmit RAR-PUSCH repeatedly.

[0186] Optionally, in an embodiment of the present application, the UE may use a special sequence or RO to request the base station to transmit the RAR PUSCH repeatedly.

[0187] Exemplarily, the UE may send a specific sequence on a configured physical random access channel (PRACH) transmission opportunity when a reference signal receiving power (RSRP) value of a downlink path loss reference is lower than a certain RSRP threshold.

[0188] Step 402: The base station receives a RAR-PUSCH retransmission request sent by the UE.

[0189] Step 403: The base station sends the semi-statically configured parameters to the UE and indicates the number of RAR-PUSCH repetition transmissions to the UE.

[0190] Optionally, in an embodiment of the present application, after receiving a request sent by the UE, the base station may schedule repeated transmission of the RAR-PUSCH.

[0191] For example, when the base station detects a specific sequence or RO, it can be determined that the UE has sent a RAR-PUSCH retransmission request. At this time, the base station can decide whether to schedule RAR-PUSCH retransmission and indicate the number of RAR-PUSCH retransmissions through x bits of a predefined field in the downlink control information (DCI) or the highest x bits of an existing information field, such as 2 bits in the modulation and coding scheme (MCS) information field.

[0192] Step 404: The UE receives the semi-statically configured parameters sent by the base station.

[0193] Step 405: The UE uses available time-frequency resources to perform RAR-PUSCH repeated transmission according to the semi-statically configured parameters.

[0194] In this way, since the available time-frequency resources for repeated transmission of the physical uplink channel can be determined by the configuration information of repeated transmission of the physical uplink channel, the UE can use the available time-frequency resources determined according to the configuration information for data transmission, thereby improving the utilization efficiency of the UE transmission resources, thereby reducing the UE transmission delay and improving the effect of enhanced coverage.

[0195] The channel repetition transmission method provided in the embodiment of the present application can be executed by a channel repetition transmission device. In the embodiment of the present application, the channel repetition transmission device performing the channel repetition transmission method is taken as an example to illustrate the channel repetition transmission device provided in the embodiment of the present application.

[0196] An embodiment of the present application provides a channel repeated transmission device 1000 . As shown in FIG10 , the channel repeated transmission device 1000 includes: an acquisition module 1001 and a transmission module 1002 .

[0197] Among them, the acquisition module 1001 is used to obtain the configuration information of the repeated transmission of the physical uplink channel, and the configuration information is used to determine the available time-frequency resources for the repeated transmission of the physical uplink channel; the transmission module 1002 is used to use the available time-frequency resources to perform repeated transmission of the physical uplink channel; wherein, the available time-frequency resources include at least one of the following: a UL subband in a DL time domain unit in which a synchronization signal and a physical broadcast channel SSB exist; a UL subband in a DL time domain unit in which a common DL channel exists; a UL subband in a DL time domain unit in which no SSB or common DL channel exists; a UL subband of a UL time domain unit; a UL time domain unit; a flexible time domain unit.

[0198] In a possible implementation, the acquisition module 1001 is specifically configured to receive configuration information of repeated transmission of a physical uplink channel from a network-side device.

[0199] In one possible implementation, the configuration information includes at least one of the following:

[0200] UL subband located in the downlink DL time domain unit;

[0201] A UL subband located in a UL time domain unit;

[0202] Time-frequency resources in the available UL subband configured by the network-side device;

[0203] The transmit power thresholds configured by the network side device for different UL resource types or UL resources;

[0204] a first frequency domain distance threshold;

[0205] a second frequency domain distance threshold;

[0206] time interval threshold;

[0207] UL time domain unit;

[0208] Time-frequency resources in flexible time-domain units determined according to predefined rules;

[0209] The predefined rules include at least one of the following:

[0210] When the flexible time domain unit is configured with a DL subband and is not configured with a UL subband, determining time-frequency resources outside the DL subband as available time-frequency resources;

[0211] When the flexible time domain unit is configured with a UL subband and the transmit power of the UL subband is less than a first transmit power threshold, determining that the time-frequency resources in the configured UL subband in the flexible time domain unit are available time-frequency resources;

[0212] In a case where the flexible time domain unit is not configured with a DL subband and is not configured with a UL subband, a time domain unit having a transmit power less than a second transmit power threshold is determined as an available time-frequency resource.

[0213] In a possible implementation, the configuration information includes: a transmit power threshold;

[0214] The above-mentioned device further includes: a determination module;

[0215] The above-mentioned determination module is used to determine that the time-frequency resources configured in the first UL subband are available time-frequency resources before the transmission module 1002 uses available time-frequency resources to perform repeated transmission of the physical uplink channel, when the transmission power of the first UL subband is less than or equal to the transmission power threshold value corresponding to the first UL subband, and the first UL subband includes at least one UL subband in the time domain unit of the UE.

[0216] In a possible implementation, the configuration information includes: a first frequency domain distance threshold;

[0217] The above-mentioned determination module is used to determine that the time-frequency resources configured in the second UL subband are available time-frequency resources when the frequency domain distance between the second UL subband in the first time domain unit and the first GB in the first time domain unit is greater than or equal to the first frequency domain distance threshold before the transmission module 1002 uses the available time-frequency resources to perform repeated transmission of the physical uplink channel.

[0218] In a possible implementation, the configuration information includes: a second frequency domain distance threshold;

[0219] The above-mentioned determination module is used to determine that the time-frequency resources configured in the third UL subband are available time-frequency resources before the transmission module 1002 uses available time-frequency resources to perform repeated transmission of the physical uplink channel, when the frequency domain distance between the third UL subband in the second time domain unit and the first DL subband in the second time domain unit is greater than or equal to the second frequency domain distance threshold.

[0220] In a possible implementation, the configuration information includes: a time interval threshold;

[0221] The above-mentioned determination module is used to determine that the time-frequency resources configured in the fourth UL subband are available time-frequency resources before the transmission module 1002 uses available time-frequency resources to perform repeated transmission of the physical uplink channel, when the time interval between the fourth UL subband in the third time domain unit and the first downlink signal in the third time domain unit is greater than or equal to the time interval threshold.

[0222] In a possible implementation, the time interval between the fourth UL subband and the downlink signal includes: the time interval between the start symbol of the fourth UL subband and the first downlink signal, or the time interval between the end symbol of the fourth UL subband and the first downlink signal.

[0223] In one possible implementation, the first downlink signal includes at least one of the following:

[0224] Synchronous signal;

[0225] broadcast signals;

[0226] System information channel;

[0227] Control channel for scheduling system information.

[0228] The present invention provides a channel retransmission apparatus. Because available time-frequency resources for physical uplink channel retransmission can be determined based on configuration information for physical uplink channel retransmission, the UE can use the available time-frequency resources determined based on the configuration information for data transmission, thereby improving the efficiency of UE transmission resource utilization, thereby reducing UE transmission delay and enhancing coverage.

[0229] The embodiment of the present application further provides a channel repeated transmission device 1100 . As shown in FIG11 , the channel repeated transmission device 1100 includes: a sending module 1101 .

[0230] Among them, the sending module 1101 is used to send configuration information of repeated transmission of the physical uplink channel to the UE, and the configuration information is used to determine the available time-frequency resources for repeated transmission of the physical uplink channel; wherein the available time-frequency resources include at least one of the following: a UL subband in a DL time domain unit in which a synchronization signal and a physical broadcast channel SSB exist; a UL subband in a DL time domain unit in which a common DL channel exists; a UL subband in a DL time domain unit in which no SSB or common DL channel exists; a UL subband of a UL time domain unit; a UL time domain unit; a flexible time domain unit.

[0231] In one possible implementation, the configuration information includes at least one of the following:

[0232] UL subband located in the downlink DL time domain unit;

[0233] A UL subband located in a UL time domain unit;

[0234] Time-frequency resources of available UL sub-bands configured by network-side equipment;

[0235] The transmit power thresholds configured by the network side device for different UL resource types or UL resources;

[0236] a first frequency domain distance threshold;

[0237] a second frequency domain distance threshold;

[0238] Time interval threshold.

[0239] UL time domain unit;

[0240] Time-frequency resources in flexible time-domain units determined according to predefined rules;

[0241] The predefined rules include at least one of the following:

[0242] When the flexible time domain unit is configured with a DL subband and is not configured with a UL subband, determining time-frequency resources outside the DL subband as available time-frequency resources;

[0243] When the flexible time domain unit is configured with a UL subband and the transmit power of the UL subband is less than a first transmit power threshold, determining that the time-frequency resources in the configured UL subband in the flexible time domain unit are available time-frequency resources;

[0244] In a case where the flexible time domain unit is not configured with a DL subband and is not configured with a UL subband, a time domain unit having a transmit power less than a second transmit power threshold is determined as an available time-frequency resource.

[0245] The present invention provides a channel retransmission apparatus that can configure the available time-frequency resources for physical uplink channel retransmission on a UE using configuration information for physical uplink channel retransmission sent by a network-side device. Therefore, the UE can use the available time-frequency resources determined based on the configuration information for data transmission, thereby improving the utilization efficiency of UE transmission resources, thereby reducing UE transmission delay and improving the effect of enhanced coverage.

[0246] The channel retransmission device in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or 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 UE11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0247] The channel retransmission device provided in the embodiment of the present application can implement the various processes implemented in the above-mentioned channel retransmission method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0248] The current frequency domain resource allocation method is determined based on the initial or activated bandwidth portion, not the uplink subband. This results in the transmission or repeated transmission of the physical uplink channel appearing on unavailable resources. Therefore, a method should be designed to enable the transmission or repeated transmission of the physical uplink channel to appear on the uplink available resource blocks (RBs).

[0249] To solve the above problems, an embodiment of the present application provides a channel transmission method, including but not limited to the following steps:

[0250] Step S1: User equipment UE determines uplink available resources; wherein the uplink available resources are determined according to uplink subband configuration information and frequency domain resource allocation information of a physical uplink channel.

[0251] Among them, the configuration information of the uplink UL subband can be a cell-level signaling configuration or a UE-level signaling configuration. The configuration information of the uplink subband can configure the time-frequency resources of the UL subband. The frequency domain resource allocation information of the physical uplink channel can include the frequency domain resource allocation information of the PUCCH or the frequency domain resource allocation information of the PUSCH. The frequency domain resource allocation information of the physical uplink channel can be a cell-level signaling configuration or a UE-level signaling configuration. The frequency domain resource allocation information of the physical uplink channel can be configured through high-layer signaling or indicated by DCI. The frequency domain resource allocation information of the physical uplink channel includes PUCCH resources or PUSCH resources.

[0252] Optionally, the frequency domain resource allocation information of the physical uplink channel is determined according to a bandwidth part BWP configured by a network side device.

[0253] Step S2: The UE performs uplink transmission on the uplink available resources.

[0254] In this way, the frequency domain resources of the physical uplink channel are limited to the uplink available resource blocks, avoiding the discarding of part or all of the physical uplink channel resources due to unavailable resources, ensuring the reliability and latency of the physical uplink channel transmission, and facilitating the completion of the random access process.

[0255] For example, as shown in FIG7(B) to FIG7(D), the UE may determine UL usable RBs for physical uplink channel (eg, PUSCH scheduled by RAR UL grant) transmission and limit PUSCH transmission to UL usable RBs.

[0256] Optionally, the uplink available resources in the present application are the intersection of the uplink subband configured by the uplink subband configuration information and the frequency domain resources indicated by the frequency domain resource allocation information of the physical uplink channel.

[0257] Take the PUSCH transmission (e.g., Msg 3) scheduled by RAR UL grant as an example. If the higher layer indicates an active UL BWP for PUSCH transmission scheduled by RAR UL grant, the frequency domain resource allocation for determining the PUSCH transmission within the active UL BWP is as follows:

[0258] If the Active UL BWP has the same SCS and CP length as the initial BWP and contains all RBs in the initial BWP, or if the Active BWP is the initial BWP, then the frequency domain resource allocation (frequency range A) for RAR UL grant-scheduled PUSCH transmissions is equal to the bandwidth of the initial BWP. In this case, the available RBs are effectively equal to the intersection of the UL subband and the initial BWP, as shown in case 1 in Figure 7(B).

[0259] Otherwise, the frequency domain resource allocation for RAR UL grant-scheduled PUSCH transmissions is the starting PRB of the activated BWP, and the maximum number of RBs is equal to the number of RBs in the initial BWP. The available RBs are the intersection of the UL subband and the frequency domain resource allocation for the physical uplink channel, as shown in case 2 in Figure 7(C) and case 3 in Figure 7(D).

[0260] It should be noted that for case 2 in Figure 7(C) and case 3 in Figure 7(D), RAR UL grant scheduling PUSCH transmission can only be limited to the UL available RBs, that is, within the frequency domain range A, and the size of the frequency domain range A is smaller than the frequency domain range B.

[0261] Optionally, this embodiment may be used for one-time transmission of a physical uplink channel, or may be used for repeated transmission of a physical uplink channel.

[0262] Similarly, for the HARQ-ACK transmission of Msg4 / MsgB on the UL subband, it is also possible to consider limiting the transmission within the UL available PRB, so as to avoid part or all of the PUCCH resources carrying the HARQ-ACK of Msg4 / MsgB from being discarded, thereby ensuring the reliability and delay of PUCCH transmission.

[0263] Optionally, taking the PUCCH transmission of the physical uplink channel carrying HARQ-ACK as an example, the first hop starting PRB index of the PUCCH can be

[0264] The starting PRB index of the second hop of PUCCH transmission can be

[0265] Or the first hop starting PRB index of PUCCH transmission can be:

[0266] The starting PRB index of the second hop of PUCCH transmission can be:

[0267] RBstarting,UL usable RB is the starting RB index of UL usable RBs, which may be determined according to network configured parameters or predefined parameters. N is the bandwidth size of UL available RB, CS is the total number of cyclic shift indices, r PUCCH The PUCCH index determined for the UE may be determined based on a predefined method. The frequency offset of the UL available RB can be determined by a predefined method or configured by the network, or it can use the same value as the frequency domain offset of the BWP. For example, the value can be etc., x can be a predefined or network-configured integer, such as x=8 or 4, etc.

[0268] Optionally, the above two methods can be selected based on a predefined method, for example, determined according to the PUCCH index. One embodiment is,

[0269] when When the first hop starting PRB index for the PUCCH transmission carrying HARQ-ACK is

[0270] The starting PRB index of the second hop of PUCCH transmission can be

[0271] when When , the first hop starting PRB index of PUCCH transmission can be:

[0272] The starting PRB index of the second hop of PUCCH transmission can be:

[0273] Optionally, this embodiment may be used for one-time transmission of the physical uplink control channel, or may be used for repeated transmission of the physical uplink control channel.

[0274] In this way, the PUCCH carrying the HARQ-ACK of Msg4 / MsgB falls within the uplink available resources, ensuring the reliability and delay of PUCCH transmission, which is conducive to the completion of the random access process.

[0275] Furthermore, the method further includes step S3: if the target resource is outside the uplink available resources, the UE does not perform uplink transmission on the target resource.

[0276] In this way, the frequency domain resources of the physical uplink channel are limited to the uplink available resource blocks, preventing partial or complete discarding of physical uplink channel resources due to unavailable resources, thereby ensuring the reliability and latency of physical uplink channel transmission. This facilitates the completion of the random access process. The above describes an embodiment of the channel transmission method of the present application. The corresponding apparatus embodiment will be further described below.

[0277] The present application also provides a channel transmission device, including:

[0278] A processing module, configured to determine uplink available resources; wherein the uplink available resources are determined based on uplink subband configuration information and frequency domain resource allocation information of a physical uplink channel;

[0279] The sending module is configured to perform uplink transmission on the uplink available resources.

[0280] Optionally, the uplink available resources are the intersection of the uplink subband configured by the uplink subband configuration information and the frequency domain resources indicated by the frequency domain resource allocation information of the physical uplink channel.

[0281] Optionally, the processing module is further configured to: if the target resource is outside the uplink available resources, not perform uplink transmission on the target resource.

[0282] Optionally, the frequency domain resource allocation information of the physical uplink channel is determined according to a bandwidth part BWP configured by a network side device.

[0283] It can be understood that the implementation process of each implementation method mentioned in the embodiment of this device can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0284] As shown in Figure 12, an embodiment of the present application further provides a communication device 1200, including a processor 1201 and a memory 1202. The memory 1202 stores a program or instruction that can be run on the processor 1201. For example, when the communication device 1200 is a UE, the program or instruction is executed by the processor 1201 to implement the various steps of the above-mentioned channel repeated transmission method embodiment and can achieve the same technical effect. When the communication device 1200 is a network-side device, the program or instruction is executed by the processor 1201 to implement the various steps of the above-mentioned channel repeated transmission method or channel transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0285] The present application also provides a UE, including 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 in the method embodiment of Figure 3. This UE embodiment corresponds to the above-mentioned UE-side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this UE embodiment and can achieve the same technical effect. Specifically, Figure 13 is a schematic diagram of the hardware structure of a UE implementing an embodiment of the present application.

[0286] The UE 1300 includes but is not limited to: a radio frequency unit 1301 , a network module 1302 , an audio output unit 1303 , an input unit 1304 , a sensor 1305 , a display unit 1306 , a user input unit 1307 , an interface unit 1308 , a memory 1309 , and at least some of the components in a processor 1310 .

[0287] Those skilled in the art will appreciate that UE 1300 may further include a power supply (such as a battery) to power various components. The power supply may be logically connected to processor 1310 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The UE structure shown in FIG13 does not limit the UE. The UE may include more or fewer components than shown, or may combine certain components or arrange the components differently, which will not be described in detail here.

[0288] It should be understood that in an embodiment of the present application, the input unit 1304 may include a graphics processing unit (GPU) 13041 and a microphone 13042, and the graphics processor 13041 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 1306 may include a display panel 13061, and the display panel 13061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1307 includes a touch panel 13071 and at least one of the other input devices 13072. The touch panel 13071 is also called a touch screen. The touch panel 13071 may include two parts: a touch detection device and a touch controller. Other input devices 13072 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.

[0289] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1301 may transmit the data to the processor 1310 for processing. Furthermore, the RF unit 1301 may send uplink data to the network-side device. Typically, the RF unit 1301 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0290] The memory 1309 can be used to store software programs or instructions and various data. The memory 1309 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein 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.). In addition, the memory 1309 may include a volatile memory or a non-volatile memory. Among them, 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 1309 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0291] Processor 1310 may include one or more processing units. Optionally, processor 1310 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 1310.

[0292] Among them, the radio frequency unit 1301 is used to obtain configuration information of repeated transmission of the physical uplink channel, and the configuration information is used to determine the available time-frequency resources for repeated transmission of the physical uplink channel; and is used to use the available time-frequency resources to perform repeated transmission of the physical uplink channel; wherein the available time-frequency resources include at least one of the following: a UL subband in a DL time domain unit in which a synchronization signal and a physical broadcast channel SSB exist; a UL subband in a DL time domain unit in which a common DL channel exists; a UL subband in a DL time domain unit in which no SSB or common DL channel exists; a UL subband of a UL time domain unit; a UL time domain unit; a flexible time domain unit.

[0293] In a possible implementation, the radio frequency unit 1301 is specifically configured to receive configuration information of repeated transmission of a physical uplink channel from a network-side device.

[0294] In one possible implementation, the configuration information includes at least one of the following:

[0295] UL subband located in the downlink DL time domain unit;

[0296] A UL subband located in a UL time domain unit;

[0297] Time-frequency resources in the available UL subband configured by the network-side device;

[0298] The transmit power thresholds configured by the network side device for different UL resource types or UL resources;

[0299] a first frequency domain distance threshold;

[0300] a second frequency domain distance threshold;

[0301] time interval threshold;

[0302] UL time domain unit;

[0303] Time-frequency resources in flexible time-domain units determined according to predefined rules;

[0304] The predefined rules include at least one of the following:

[0305] When the flexible time domain unit is configured with a DL subband and is not configured with a UL subband, determining time-frequency resources outside the DL subband as available time-frequency resources;

[0306] When the flexible time domain unit is configured with a UL subband and the transmit power of the UL subband is less than a first transmit power threshold, determining that the time-frequency resources in the configured UL subband in the flexible time domain unit are available time-frequency resources;

[0307] In a case where the flexible time domain unit is not configured with a DL subband and is not configured with a UL subband, a time domain unit having a transmit power less than a second transmit power threshold is determined as an available time-frequency resource.

[0308] In a possible implementation, the configuration information includes: a transmit power threshold;

[0309] The above-mentioned processor 1310 is used to determine that the time-frequency resources configured in the first UL subband are available time-frequency resources before the radio frequency unit 1310 uses available time-frequency resources to perform repeated transmission of the physical uplink channel, when the transmission power of the first UL subband is less than or equal to the transmission power threshold value corresponding to the first UL subband, and the first UL subband includes at least one UL subband in the time domain unit of the UE.

[0310] In a possible implementation, the configuration information includes: a first frequency domain distance threshold;

[0311] The above apparatus further includes: a processor 1310;

[0312] The above-mentioned processor 1310 is used to determine that the time-frequency resources configured in the second UL subband are available time-frequency resources before the radio frequency unit 1310 uses available time-frequency resources to perform repeated transmission of the physical uplink channel, when the frequency domain distance between the second UL subband in the first time domain unit and the first GB in the first time domain unit is greater than or equal to the first frequency domain distance threshold.

[0313] In a possible implementation, the configuration information includes: a second frequency domain distance threshold;

[0314] The above-mentioned processor 1310 is used to determine that the time-frequency resources configured in the third UL subband are available time-frequency resources before the radio frequency unit 1310 uses available time-frequency resources to perform repeated transmission of the physical uplink channel, when the frequency domain distance between the third UL subband in the second time domain unit and the first DL subband in the second time domain unit is greater than or equal to the second frequency domain distance threshold.

[0315] In a possible implementation, the configuration information includes: a time interval threshold;

[0316] The above-mentioned processor 1310 is used to determine that the time-frequency resources configured in the fourth UL subband are available time-frequency resources before the radio frequency unit 1310 uses available time-frequency resources to perform repeated transmission of the physical uplink channel, when the time interval between the fourth UL subband in the third time domain unit and the first downlink signal in the third time domain unit is greater than or equal to the time interval threshold.

[0317] In a possible implementation, the time interval between the fourth UL subband and the downlink signal includes: the time interval between the start symbol of the fourth UL subband and the first downlink signal, or the time interval between the end symbol of the fourth UL subband and the first downlink signal.

[0318] In one possible implementation, the first downlink signal includes at least one of the following:

[0319] Synchronous signal;

[0320] broadcast signals;

[0321] System information channel;

[0322] Control channel for scheduling system information.

[0323] The embodiments of the present application provide a UE that can determine available time-frequency resources for repeated transmission of a physical uplink channel based on configuration information for repeated transmission of the physical uplink channel. Therefore, the UE can use the available time-frequency resources determined based on the configuration information for data transmission, thereby improving the utilization efficiency of the UE's transmission resources, thereby reducing UE transmission delay and improving the effect of enhanced coverage.

[0324] In addition, the UE in the embodiment of the present application can also implement the various steps of the above-mentioned channel transmission method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0325] 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 and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0326] The present application also provides a network-side device, including 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 FIG14 . This network-side device embodiment corresponds to the aforementioned network-side device method embodiment, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0327] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 14, network-side device 1400 includes an antenna 141, a radio frequency device 142, a baseband device 143, a processor 144, and a memory 145. Antenna 141 is connected to radio frequency device 142. In the uplink direction, radio frequency device 142 receives information via antenna 141 and sends the received information to baseband device 143 for processing. In the downlink direction, baseband device 143 processes the information to be transmitted and sends it to radio frequency device 142. Radio frequency device 142 processes the received information and then sends it through antenna 141.

[0328] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 143 , which includes a baseband processor.

[0329] The baseband device 143 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 14, one of the chips is, for example, a baseband processor, which is connected to the memory 145 through a bus interface to call the program in the memory 145 to execute the network device operations shown in the above method embodiment.

[0330] The network side device may further include a network interface 146 , which is, for example, a Common Public Radio Interface (CPRI).

[0331] Specifically, the network side device 1400 of an embodiment of the present invention also includes: instructions or programs stored in the memory 145 and executable on the processor 144. The processor 144 calls the instructions or programs in the memory 145 to execute the methods executed by the modules shown in FIG11 and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0332] 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, the various processes of the above-mentioned channel repeated transmission method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0333] The processor is the processor in the UE 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.

[0334] 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 the various processes of the above-mentioned channel repeated transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0335] 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.

[0336] 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 at least one processor to implement the various processes of the above-mentioned channel retransmission method or channel transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0337] An embodiment of the present application also provides a channel retransmission system, including: a UE and a network side device, wherein the UE can be used to execute the steps of the channel retransmission method described above, and the network side device can be used to execute the steps of the channel retransmission method described above.

[0338] 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 sentence "comprises a ..." 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.

[0339] 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 a 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 several instructions for causing the UE or network-side device to execute the methods described in each embodiment of the present application.

[0340] 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 channel repeated transmission method, comprising: The user equipment UE acquires configuration information of repeated transmission of a physical uplink channel, where the configuration information is used to determine available time-frequency resources for repeated transmission of the physical uplink channel; The UE uses the available time-frequency resources to perform repeated transmission of the physical uplink channel; The available time-frequency resources include at least one of the following: UL subband in DL time domain unit where synchronization signal and physical broadcast channel SSB are present; A UL subband in a DL time domain unit in which a common DL channel exists; UL subbands in DL time domain units where there is no SSB or common DL channel; A UL subband of a UL time domain unit; One UL time domain unit; Flexible time domain unit.

2. The method according to claim 1, wherein: The UE obtains configuration information of repeated transmission of a physical uplink channel, including: The UE receives configuration information of repeated transmission of the physical uplink channel from a network side device.

3. The method according to claim 2, wherein: The configuration information includes at least one of the following: A UL subband located in a downlink DL time domain unit; A UL subband located in a UL time domain unit; The time-frequency resources in the available UL subband configured by the network side device; The network side device configures a transmit power threshold value for different UL resource types or UL resources; A first frequency domain distance threshold; A second frequency domain distance threshold; time interval threshold; UL time domain unit; time-frequency resources in flexible time-domain units determined according to predefined rules; The predefined rules include at least one of the following: In a case where the flexible time domain unit is configured with a DL subband and is not configured with a UL subband, determining time-frequency resources outside the DL subband as available time-frequency resources; In a case where the flexible time domain unit is configured with a UL subband and the transmit power of the UL subband is less than a first transmit power threshold value, determining that the time-frequency resources in the configured UL subband in the flexible time domain unit are available time-frequency resources; When the flexible time domain unit is not configured with a DL subband and is not configured with a UL subband, it is determined that the time domain unit with a transmit power less than a second transmit power threshold value is an available time-frequency resource.

4. The method according to claim 3, wherein: The configuration information includes: the transmit power threshold value; Before the UE uses the available time-frequency resources to perform repeated transmission of the physical uplink channel, the method further includes: When the transmission power of the first UL subband is less than or equal to the transmission power threshold value corresponding to the first UL subband, the UE determines that the time-frequency resources configured in the first UL subband are the available time-frequency resources, and the first UL subband includes at least one UL subband in the time domain unit of the UE.

5. The method according to claim 3, wherein: The configuration information includes: the first frequency domain distance threshold; Before the UE uses the available time-frequency resources to perform repeated transmission of the physical uplink channel, the method further includes: When the frequency domain distance between the second UL subband in the first time domain unit and the first GB in the first time domain unit is greater than or equal to the first frequency domain distance threshold, the UE determines that the time-frequency resources configured in the second UL subband are the available time-frequency resources.

6. The method according to claim 3, wherein: The configuration information includes: the second frequency domain distance threshold; Before the UE uses the available time-frequency resources to perform repeated transmission of the physical uplink channel, the method further includes: When the frequency domain distance between the third UL subband in the second time domain unit and the first DL subband in the second time domain unit is greater than or equal to the second frequency domain distance threshold, the UE determines that the time-frequency resources configured in the third UL subband are the available time-frequency resources.

7. The method according to claim 3, wherein: The configuration information includes: the time interval threshold; Before the UE uses the available time-frequency resources to perform repeated transmission of the physical uplink channel, the method further includes: When the time interval between the fourth UL subband in the third time domain unit and the first downlink signal in the third time domain unit is greater than or equal to the time interval threshold, the UE determines that the time-frequency resources configured in the fourth UL subband are the available time-frequency resources.

8. The method according to claim 7, wherein: The time interval between the fourth UL subband and the downlink signal includes: the time interval between the start symbol of the fourth UL subband and the first downlink signal, or the time interval between the end symbol of the fourth UL subband and the first downlink signal.

9. The method according to claim 7 or 8, wherein: The first downlink signal includes at least one of the following: Synchronous signal; Broadcast signal; System information channel; Control channel for scheduling system information.

10. A channel repeated transmission method, comprising: The network side device sends configuration information of repeated transmission of a physical uplink channel to the UE, where the configuration information is used to determine available time-frequency resources for repeated transmission of the physical uplink channel; The available time-frequency resources include at least one of the following: UL subband in DL time domain unit where synchronization signal and physical broadcast channel SSB are present; A UL subband in a DL time domain unit in which a common DL channel exists; UL subbands in DL time domain units where there is no SSB or common DL channel; A UL subband of a UL time domain unit; One UL time domain unit; Flexible time domain unit.

11. The method according to claim 10, wherein: The configuration information includes at least one of the following: A UL subband located in a downlink DL time domain unit; A UL subband located in a UL time domain unit; The time-frequency resources of the available UL subband configured by the network side device; The network side device configures a transmit power threshold value for different UL resource types or UL resources; A first frequency domain distance threshold; A second frequency domain distance threshold; time interval threshold; UL time domain unit; time-frequency resources in flexible time-domain units determined according to predefined rules; The predefined rules include at least one of the following: In a case where the flexible time domain unit is configured with a DL subband and is not configured with a UL subband, determining time-frequency resources outside the DL subband as available time-frequency resources; In a case where the flexible time domain unit is configured with a UL subband and the transmit power of the UL subband is less than a first transmit power threshold value, determining that the time-frequency resources in the configured UL subband in the flexible time domain unit are available time-frequency resources; When the flexible time domain unit is not configured with a DL subband and is not configured with a UL subband, it is determined that the time domain unit with a transmit power less than a second transmit power threshold value is an available time-frequency resource.

12. A channel repeated transmission device, comprising: Acquisition module and transmission module; The acquisition module is used to acquire configuration information of repeated transmission of a physical uplink channel, where the configuration information is used to determine available time-frequency resources for repeated transmission of the physical uplink channel; The transmission module is used to use the available time-frequency resources to perform repeated transmission of the physical uplink channel; The available time-frequency resources include at least one of the following: UL subband in DL time domain unit where synchronization signal and physical broadcast channel SSB are present; A UL subband in a DL time domain unit in which a common DL channel exists; UL subbands in DL time domain units where there is no SSB or common DL channel; A UL subband of a UL time domain unit; One UL time domain unit; Flexible time domain unit.

13. The device according to claim 12, wherein: The acquisition module is specifically used to receive the configuration information of repeated transmission of the physical uplink channel from the network side device.

14. The device according to claim 13, wherein: The configuration information includes at least one of the following: A UL subband located in a downlink DL time domain unit; A UL subband located in a UL time domain unit; The time-frequency resources in the available UL subband configured by the network side device; The network side device configures a transmit power threshold value for different UL resource types or UL resources; A first frequency domain distance threshold; A second frequency domain distance threshold; time interval threshold; UL time domain unit; time-frequency resources in flexible time-domain units determined according to predefined rules; The predefined rules include at least one of the following: In a case where the flexible time domain unit is configured with a DL subband and is not configured with a UL subband, determining time-frequency resources outside the DL subband as available time-frequency resources; In a case where the flexible time domain unit is configured with a UL subband and the transmit power of the UL subband is less than a first transmit power threshold value, determining that the time-frequency resources in the configured UL subband in the flexible time domain unit are available time-frequency resources; When the flexible time domain unit is not configured with a DL subband and is not configured with a UL subband, it is determined that the time domain unit with a transmit power less than a second transmit power threshold value is an available time-frequency resource.

15. The device according to claim 14, wherein: The configuration information includes: the transmit power threshold value; The device further comprises: a determination module; The determination module is used to determine that the time-frequency resources configured in the first UL subband are the available time-frequency resources before the transmission module adopts the available time-frequency resources to perform repeated transmission of the physical uplink channel, when the transmission power of the first UL subband is less than or equal to the transmission power threshold value corresponding to the first UL subband, and the first UL subband includes at least one UL subband in the time domain unit of the UE.

16. The device according to claim 14, wherein: The configuration information includes: the first frequency domain distance threshold; The device further comprises: a determination module; The determination module is used to determine that the time-frequency resources configured in the second UL subband are the available time-frequency resources before the transmission module adopts the available time-frequency resources to perform repeated transmission of the physical uplink channel, when the frequency domain distance between the second UL subband in the first time domain unit and the first GB in the first time domain unit is greater than or equal to the first frequency domain distance threshold.

17. The device according to claim 14, wherein: The configuration information includes: the second frequency domain distance threshold; The device further comprises: a determination module; The determination module is used to determine that the time-frequency resources configured in the third UL subband are the available time-frequency resources before the transmission module adopts the available time-frequency resources to perform repeated transmission of the physical uplink channel, when the frequency domain distance between the third UL subband in the second time domain unit and the first DL subband in the second time domain unit is greater than or equal to the second frequency domain distance threshold.

18. The device according to claim 14, wherein: The configuration information includes: the time interval threshold; The device further comprises: a determination module; The determination module is used to determine that the time-frequency resources configured in the fourth UL subband are the available time-frequency resources before the transmission module adopts the available time-frequency resources to perform repeated transmission of the physical uplink channel, when the time interval between the fourth UL subband in the third time domain unit and the first downlink signal in the third time domain unit is greater than or equal to the time interval threshold.

19. The device according to claim 18, wherein: The time interval between the fourth UL subband and the downlink signal includes: the time interval between the start symbol of the fourth UL subband and the first downlink signal, or the time interval between the end symbol of the fourth UL subband and the first downlink signal.

20. The device according to claim 18 or 19, wherein: The first downlink signal includes at least one of the following: Synchronous signal; Broadcast signal; System information channel; Control channel for scheduling system information.

21. A channel repeated transmission device, comprising: Send module; The sending module is used to send configuration information of repeated transmission of a physical uplink channel to the UE, where the configuration information is used to determine available time-frequency resources for repeated transmission of the physical uplink channel; The available time-frequency resources include at least one of the following: UL subband in DL time domain unit where synchronization signal and physical broadcast channel SSB are present; A UL subband in a DL time domain unit in which a common DL channel exists; UL subbands in DL time domain units where there is no SSB or common DL channel; A UL subband of a UL time domain unit; One UL time domain unit; Flexible time domain unit.

22. The device according to claim 21, wherein The configuration information includes at least one of the following: A UL subband located in a downlink DL time domain unit; A UL subband located in a UL time domain unit; The time-frequency resources of the available UL subband configured by the network side device; The network side device configures a transmit power threshold value for different UL resource types or UL resources; A first frequency domain distance threshold; A second frequency domain distance threshold; time interval threshold; UL time domain unit; time-frequency resources in flexible time-domain units determined according to predefined rules; The predefined rules include at least one of the following: In a case where the flexible time domain unit is configured with a DL subband and is not configured with a UL subband, determining time-frequency resources outside the DL subband as available time-frequency resources; In a case where the flexible time domain unit is configured with a UL subband and the transmit power of the UL subband is less than a first transmit power threshold value, determining that the time-frequency resources in the configured UL subband in the flexible time domain unit are available time-frequency resources; When the flexible time domain unit is not configured with a DL subband and is not configured with a UL subband, it is determined that the time domain unit with a transmit power less than a second transmit power threshold value is an available time-frequency resource.

23. A channel transmission method, comprising: The user equipment UE determines the uplink available resources; wherein the uplink available resources are determined according to the configuration information of the uplink subband and the frequency domain resource allocation information of the physical uplink channel; The UE performs uplink transmission on the uplink available resources.

24. The method according to claim 23, wherein: The uplink available resources are the intersection of the uplink subband configured by the uplink subband configuration information and the frequency domain resources indicated by the frequency domain resource allocation information of the physical uplink channel.

25. The method according to claim 23, wherein: Also includes: If the target resource is outside the uplink available resources, the UE does not perform uplink transmission on the target resource.

26. The method of claim 23, wherein: The frequency domain resource allocation information of the physical uplink channel is determined according to the bandwidth part BWP configured by the network side device.

27. A UE, 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 channel repeated transmission method as described in any one of claims 1 to 9 and 23 to 26 are implemented.

28. A network side device, 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 channel repeated transmission method as claimed in claim 10 or 11 are implemented.

29. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the channel repeated transmission method as described in any one of claims 1 to 9, 23 to 26, or implements the steps of the channel repeated transmission method as described in claim 10 or 11.

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