Repetition transmission method, terminal, and network side device

Abstract

The present application relates to the technical field of communications, and discloses a repetition transmission method, a terminal, and a network side device. The repetition transmission method of embodiments of the present application comprises: a terminal sends a first signal to a network side device, and the terminal receives a target downlink transmission sent by the network side device on the basis of a repetition transmission mode, wherein the target downlink transmission carries a first response, the first response comprises response information corresponding to at least one first object, and the first object is related to the first signal.

Description

Repeated transmission method, terminal and network side equipment

[0001] Cross-references

[0002] This application claims priority to a Chinese patent application filed with the Patent Office of China on February 1, 2024, with application number 2024101497602 and invention name “Method, terminal and network-side device for repeated transmission”. The entire contents of the application are incorporated by reference into this application. Technical Field

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

[0004] Taking non-terrestrial networks (NTNs) as an example, satellite handovers and other factors may cause a large number or even all terminals to quickly switch to a new satellite through methods such as random access, cell switching, beam switching, or uplink resynchronization to ensure communication quality. However, since a large number or even all terminals need to switch simultaneously or within a short period of time, handover failures may occur due to resource conflicts and other reasons. To address this, related technologies can introduce different signal attributes to the same signal (such as the preamble in random access) on the same size of time-frequency resources. For example, this can support the transmission of multiple different narrower beams or perform further signal processing such as scrambling and interleaving, thereby increasing access capacity and meeting the needs of a large number or even all terminals needing to switch simultaneously or within a short period of time.

[0005] However, in this case, how to respond to the same signal with different attributes received from different terminals is still a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] The embodiments of the present application provide a repeated transmission method, terminal, and network-side device, which can realize signal response to the same signal with different attributes from different terminals, thereby ensuring the performance of the communication system.

[0007] In a first aspect, a method for repeated transmission is provided, including: a terminal sends a first signal to a network side device; the terminal receives a target downlink transmission sent by the network side device based on a repeated transmission mode; wherein the target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

[0008] In the second aspect, a method for repeated transmission is provided, including: a network side device receives a first signal sent by multiple terminals; the network side device sends a target downlink transmission to each of the terminals based on a repeated transmission method; wherein the target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

[0009] In a third aspect, a repeated transmission device is provided, comprising: a sending module for sending a first signal to a network side device; a receiving module for receiving a target downlink transmission sent by the network side device based on a repeated transmission method; wherein the target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

[0010] In a fourth aspect, a device for repeated transmission is provided, comprising: a receiving module for receiving a first signal sent by multiple terminals; a sending module for sending a target downlink transmission to each of the terminals based on a repeated transmission method; wherein the target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

[0011] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0012] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is used to run a program or instruction to implement the steps of the method described in the first aspect.

[0013] 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.

[0014] In an eighth aspect, a network side device is provided, comprising a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the steps of the method described in the second aspect.

[0015] 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.

[0016] In the tenth aspect, a wireless communication system is provided, comprising: a terminal and a network side device, wherein the terminal 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.

[0017] 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 steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0018] 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 steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0019] In an embodiment of the present application, when a network side device receives a first signal sent by multiple terminals, it can send a target downlink transmission to each of the terminals based on a repeated transmission method, wherein the target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal. Thus, the network side device carries the response information corresponding to different terminals in the target downlink transmission of repeated transmission and sends it, thereby realizing signal response to the same signal with different attributes from different terminals, while ensuring the performance of the communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic structural diagram of a wireless communication system provided by an exemplary embodiment of the present application.

[0021] FIG2 a is a schematic diagram of RO resources provided by an exemplary embodiment of the present application.

[0022] FIG2 b is a schematic diagram of the mapping relationship between SSB and RO provided by an exemplary embodiment of the present application.

[0023] FIG2c is a schematic diagram of an RO set provided by an exemplary embodiment of the present application.

[0024] FIG2 d is a schematic diagram of a MAC PDU provided by an exemplary embodiment of the present application.

[0025] FIG2e is a schematic diagram of a MAC RAR provided by an exemplary embodiment of the present application.

[0026] FIG3 is a flowchart of a repetitive method according to an exemplary embodiment of the present application.

[0027] FIG4 is a second flowchart of a method for repeated transmission provided by an exemplary embodiment of the present application.

[0028] FIG5 is a third flowchart of a method for repeated transmission provided by an exemplary embodiment of the present application.

[0029] FIG6 is a fourth flowchart of a method for repeated transmission provided by an exemplary embodiment of the present application.

[0030] FIG. 7 is a schematic diagram of a structure of a repeated transmission apparatus according to an exemplary embodiment of the present application.

[0031] FIG8 is a second structural diagram of a repeated transmission apparatus provided by an exemplary embodiment of the present application.

[0032] FIG9 is a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.

[0033] FIG10 is a schematic structural diagram of a terminal provided by an exemplary embodiment of the present application.

[0034] FIG11 is a schematic structural diagram of a network-side device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0040] In addition, for ease of understanding, the relevant technical features involved in this application are introduced below. The content is as follows.

[0041] 1. Synchronization signal and physical broadcast channel (PBCH)

[0042] In order for the terminal to search for a reasonable cell and synchronize with the selected cell, the network usually needs to broadcast a synchronization signal and provide certain master information about the cell. In NR, the terminal can use the synchronization signal to search for the cell to obtain the cell's physical layer cell identifier (Physical Cell Identifier, PCI) and downlink frequency synchronization. The terminal then receives the PBCH and reads the system information to obtain the cell's most important system information and information on how to receive other system information (System Information Block 1, SIB1). After receiving the PBCH, the terminal can obtain the cell's downlink timing information, such as the system frame number, the position of subframe 0, etc., to obtain downlink time synchronization. Then, by receiving other system information (including SIB1 and SI messages), the terminal can obtain information about how the cell works and how to access the cell. Next, the terminal will initiate a random access process to obtain uplink synchronization and establish a radio resource control (RRC) connection with the network.

[0043] Among them, the aforementioned synchronization signals mainly include the primary synchronization signal (PSS), the secondary synchronization signal (SSS) and the PBCH. The PBCH carries the most important system information, also known as the master information block (MIB). The concept of SSB appears in NR, which is composed of the original PSS, SSS, PBCH and demodulation reference signal (DMRS) in 4 consecutive orthogonal frequency division multiplex (OFDM) symbols. The frequency domain occupies a total of 240 subcarriers, that is, 20 physical resource blocks (PRBs), numbered 0 to 239.

[0044] Mapping rules for SSB to random access opportunity (PRACH Occasion, RO) in 2.5G NR

[0045] The configuration parameters for the Physical Random Access Channel (PRACH) resources and SSB-ROs are configured in SIB1. In NR, a cell can configure multiple frequency division multiplexed (FDM) PRACH ROs at a single PRACH transmission time domain location. The number of ROs that can be FDMed at a time can be: {1, 2, 4, 8}, which is configured and determined by the higher-layer parameter msg1-FDM.

[0046] The random access preamble can only be transmitted on the time domain resources configured by the parameter PRACH configuration index (prach-ConfigurationIndex) and the frequency domain resources configured by the parameter msg1-FDM. RA ∈{0,1,…,M-1}, where M is equal to the high-level parameter msg1-FDM. At the time of initial access, the PRACH frequency domain resource n RA The PRACH frequency domain resource n is numbered in ascending order starting from the lowest frequency RO resource in the initial active uplink bandwidth part. Otherwise, the PRACH frequency domain resource n is RA The RO resources are numbered in ascending order starting from the lowest frequency resource in the active uplink bandwidth part. For example, in Figure 2a, the number of FDM ROs at a time is 8 (msg1-FDM=8), and the RO resources are numbered from RO#0 to RO#7 in ascending order of frequency.

[0047] In NR, there is an association between the RO and the actual SSB transmitted. The RO is associated with the SSB in the frequency domain (from low frequency to high frequency) and then in the time domain. One SSB may be associated with multiple consecutive ROs, or multiple SSBs may be associated with one RO (in this case, different SSBs correspond to different preambles).

[0048] After all SSBs have completed one round of association with the RO, an SSB-RO mapping cycle is formed. An SSB-RO association period may include one or more SSB-RO mapping cycles. An SSB-RO association pattern period may include one or more SSB-RO association periods. The SSB-RO mapping is repeated based on the association pattern period, and the maximum association pattern period is 160ms.

[0049] Typically, a base station can use different beams to transmit different SSBs. The number of SSBs is configured using the ssb-PositionsInBurst parameter. For FR2, the maximum number of SSBs is 64. Based on the strength of the received downlink beam / SSB, the terminal selects the RO or RO and preamble combination associated with a strong SSB to send Msg1. The network then determines the SSB selected by the terminal based on the RO or RO and preamble combination received in the preamble. Msg2 is then sent on the downlink beam corresponding to the SSB to ensure downlink signal reception quality.

[0050] Taking Figure 2a as an example, the number of FDM ROs at a time is 8, and the number of SSBs actually transmitted is 4, namely SSB#0, SSB#1, SSB#2, and SSB#3. Each SSB is associated with two ROs. If the terminal determines to send PRACH / Mg1 on the RO corresponding to SSB#0, the terminal selects an RO between RO#0 and RO#1 to send the PRACH.

[0051] Taking Figure 2b as an example, the number of FDM ROs at a time is 2, and the number of SSBs actually transmitted is 8, namely SSB#0, SSB#1, ..., SSB#7, with every two SSBs associated with one RO. When multiple SSBs share a RO, the preamble sets associated with these multiple SSBs are different, that is, the same preamble cannot belong to the preamble sets associated with different SSBs at the same time: Taking RO#0 in Figure 4 as an example, RO#0 has a total of 60 preambles, of which preambles with indices 0 to 29 are associated with SSB#0, and preambles with indices 30 to 59 are associated with SSB#1.

[0052] Before sending PRACH, the terminal first selects a received beam (SSB) with a reference signal received power (RSRP) higher than the threshold based on the RSRP of the received SSB. If the RSRP of multiple SSBs is higher than the threshold, the terminal can select any SSB with an RSRP higher than the threshold. If there is no SSB with an RSRP higher than the threshold, the terminal selects an SSB based on the implementation.

[0053] Based on the network configuration, the terminal obtains the correspondence between the SSB and the RO. After selecting the SSB, the RO corresponding to the selected SSB is used as the RO for sending PRACH / Preamble / Msg1. If the selected SSB is associated with multiple ROs, the terminal can select one of the ROs to send PRACH / Preamble / Msg1.

[0054] For example, in the example shown in Figure 2a, assuming the terminal selects SSB#1, it can select one from RO#2 and RO#3 to transmit PRACH / Msg1. In the example shown in Figure 2b, if the terminal selects SSB#1, it can select the available RO closest to the current time among the ROs (RO#0 or 4) associated with SSB#1 to transmit PRACH / Msg1. In the selected RO, the terminal selects a preamble from the preamble set associated with the selected SSB to transmit PRACH. As shown in Figure 4, if one RO is associated with two SSBs, the preambles in the available preamble set associated with the SSBs in one RO are divided into two subsets, each corresponding to one SSB. The terminal selects a preamble sequence from the preamble subset corresponding to the selected SSB for PRACH / Msg1 transmission.

[0055] 3. Random Access Process

[0056] The random access process may be a contention-based random access process (Contention Based Random Access, CBRA) or a non-contention-based random access process (Contention Free Random Access, CFRA).

[0057] The contention-based 4-step random access process includes: the terminal first sends Msg1 containing a preamble to the network; after the network detects the preamble, it will send Msg2 or a random access response (RAR) message, which contains the number of the preamble detected by the network and the uplink wireless resources allocated to the terminal to send Msg3; after receiving Msg2, the terminal confirms that at least one of the preamble numbers carried in Msg2 is consistent with the number of the preamble it sent, and then sends Msg3 containing contention resolution information based on the transmission resources indicated by the RAR; after receiving Msg3, the network will send Msg4 containing contention resolution information; after receiving Msg4, the terminal confirms that the resolution information is consistent with the one it sent in Msg3, thus completing the 4-step random access. The network includes uplink grant (UL grant) information in the RAR to indicate the MSG3 Physical Uplink Shared Channel (PUSCH) scheduling information, and includes information such as RACH preamble ID (RAPID), Temporary Cell Radio Network Temporary Identifier (TC-RNTI), and Timing Advance (TA). If the network does not receive the MSG3 PUSCH, it can schedule the retransmission of the MSG3 PUSCH in the TC-RNTI-scrambled Physical Downlink Control Channel (PDCCH).

[0058] During the contention-based random access process, different terminals randomly select preambles for transmission. This may result in different terminals selecting the same preamble for transmission on the same time-frequency resource (RO resource), a situation that can be considered a preamble conflict. In this case, different terminals will receive the same RAR. At this time, different terminals will transmit the MSG3 PUSCH based on the scheduling information in the RAR UL grant. Because existing technologies do not support repeated transmission of the MSG3 PUSCH, the network can only decode the PUSCH (including contention resolution information) transmitted by one terminal on a single MSG3 PUSCH scheduling resource. Therefore, the network includes the contention resolution information received in MSG3 in MSG4. If the contention resolution information received in MSG4 matches the contention resolution information sent by the terminal in MSG3 PUSCH, the terminal considers contention resolution successful. If they do not match, contention resolution is considered unsuccessful. If contention resolution is unsuccessful, the terminal reselects a RACH transmission resource, transmits a PRACH, and makes the next random access attempt.

[0059] In non-contention-based random access, the preamble is allocated by the base station. This preamble is called a dedicated random access preamble or dedicated preamble. This dedicated preamble is provided to the terminal via RRC signaling or PDCCH order signaling. Therefore, there is no preamble contention. When dedicated preamble resources are insufficient, the gNode B notifies the terminal to initiate contention-based random access. Therefore, CFRA is also known as the three-step RACH procedure.

[0060] It is worth noting that the "SSB" mentioned in the context of this application can also be any module that includes at least one of a synchronization signal, a broadcast signal, a PBCH, other system message downlink broadcast channels or their control channels.

[0061] In addition, the RO mentioned in the context of this application can also be called PRACH Occasion, which refers to the time-frequency resources required for sending a random access-related sequence, and can also refer to the same time-frequency resources for transmitting the above-mentioned multiple first signals from different terminals.

[0062] 4. Determination of RO group when PRACH is repeatedly transmitted

[0063] Rel-18 introduced PRACH repetition to enhance uplink coverage. For PRACH repetition, the terminal needs to repeatedly send the Preamble on multiple ROs at different positions in the time domain associated with the same SSB. The number of repetitions can be {2, 4, 8}. After the terminal determines the number of PRACH repetitions, it needs to determine the RO set. The number of valid ROs in the RO set is equal to the number of PRACH repetitions. Assuming that the number of PRACH repetitions is N1, the RO set determination rule is: first determine the starting RO of the RO set, and then determine the remaining N-1 ROs in the RO set. The remaining N-1 ROs in each RO set are ROs that are associated with the same SSB, the same frequency position, and the same associated Preamble set as the starting RO. For example, assuming that the PRACH repetition number is 2, for SSB#0, the RO group can be determined as shown in Figure 2c.

[0064] 5. Medium Access Control (MAC) Protocol Data Unit (PDU) (RAR)

[0065] As shown in Figure 2d, the RAR MAC PDU consists of one or more MAC sub-PDUs and optional padding, where the MAC subPDU consists of the following a)-c). In Figure 2d, "E" indicates an extension field, "T" indicates a type field, and "R" indicates a reserved field.

[0066] a) A MAC subheader with only a Backoff Indicator (BI) (can exist alone).

[0067] b) A MAC subheader with only RAPID (i.e., confirmation of the SI request, which can exist alone).

[0068] c) MAC subheader of MAC RAR with RAPID.

[0069] If BI is included, a MAC subPDU consisting only of BI is placed at the beginning of the RAR MAC PDU; a MAC subPDU with only RAPID (such as an acknowledgment of an SI request) and a MAC subPDU of MAC RAR with RAPID can be placed anywhere between the MAC subPDU with BI (if present) and padding (if present).

[0070] From the structure of the RAR MAC PDU, it can be seen that if the gNB detects random access requests from multiple terminals (with the same RA-RNTI) on the same PRACH resource, one RAR MAC PDU can be used to respond to these access requests. The response to each random access request (corresponding to a preamble index) corresponds to one RAR.

[0071] If multiple terminals send preambles on the same PRACH resource, the corresponding RARs are multiplexed in the same RAR MAC PDU.

[0072] The RAR MAC PDU is transmitted on the DL-SCH and indicated by the PDCCH scrambled with the RA-RNTI. If all terminals using the same PRACH resource to send the preamble (the preamble does not necessarily need to be the same) monitor the same RA-RNTI scrambled PDCCH and receive the same RAR MAC PDU, different preamble indices correspond to different MAC RARs, i.e., one MAC subPDU within the RAR MAC PDU.

[0073] Since a RAR MAC PDU can only be scrambled using one RA-RNTI, this also means that RARs corresponding to preambles sent using different PRACH resources (different time-frequency locations) cannot be multiplexed into the same RAR MAC PDU. The MAC RAR is shown in Figure 2e, where the TAC in Figure 2e stands for Timing Advance Command.

[0074] Based on this, the technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings and through some embodiments and their application scenarios.

[0075] Figure 3 is a flow chart of a method 300 for repeated transmission according to an exemplary embodiment of the present application. This method 300 may be, but is not limited to, performed by a network-side device, specifically, by at least one of hardware and software installed in the network-side device. In this embodiment, the method 300 may include at least the following steps.

[0076] S310: A network-side device receives first signals sent by multiple terminals.

[0077] The first signal may be of multiple types depending on the communication scenario. For example, the first signal may include, but is not limited to, at least one of: Msg 1 preamble, Msg A preamble, Msg A PUSCH, PUSCH without random access (RACH less), uplink activation signal, uplink wake-up signal, sounding reference signal (SRS), Msg 3 PUSCH, Msg 5 PUSCH, and synchronization signal.

[0078] It is understood that, in the context of this application, the first signals sent by the multiple terminals may be, but are not limited to, the same signal processed according to different signal attributes. In other words, the multiple first signals sent by the multiple terminals are determined based on the same signal but have different signal attributes. This improves access capacity while allowing the network-side device to distinguish first signals from different terminals based on different signal attributes.

[0079] Based on this, in some embodiments, assuming that the first signal is a preamble, the same preamble with different signal properties (or called preamble enhanced properties) can be a preamble that supports transmission on multiple different narrower beams. That is, the preambles sent by multiple terminals have the same index but are sent on different beams. In this way, the network-side device can distinguish different terminals through beam information.

[0080] Alternatively, having different signal attributes (or called preamble enhancement attributes) may refer to further processing of the same preamble, such as scrambling, interleaving, etc., that is, the preambles sent by multiple terminals have the same index but are processed differently. Then, the network side device can distinguish different terminals by processing information such as scrambling and interleaving corresponding to the first signal.

[0081] In addition, the aforementioned preamble enhancement attributes may also include, but are not limited to: supporting at least one preamble within an RO to be associated with at least two reference signals, or supporting a preamble within an RO to be associated with a first reference signal and the first reference signal to be associated with at least two second reference signals. Based on this, the network-side device can distinguish different terminals by using the preamble and its associated reference signals.

[0082] S320: The network side device sends a target downlink transmission to each of the terminals based on a repeated transmission method.

[0083] Among them, the repeated transmission method mentioned in the context of this application can be understood as: repeated transmission of the same content on different resources, or repeated transmission of different content on the same resources, or multiple transmissions scheduled by one scheduling information, which is not limited here.

[0084] In addition, in this embodiment, after receiving each first signal, the network-side device can distinguish the terminal that sent the first signal based on the signal attribute of the first signal. Then, for first signals from different terminals, a first response can be carried in the target downlink transmission, and the first response includes response information corresponding to at least one first object to achieve signal response.

[0085] The first object is related to the first signal. For example, in some embodiments, the first object may include but is not limited to at least one of the terminal sending the first signal, the terminal group to which the terminal sending the first signal belongs, the signal attribute of the first signal, and the signal attribute group to which the signal attribute of the first signal belongs. That is, when the network-side device receives the same first signal with different signal attributes from different terminals, it can carry the response information of the first signal on the target downlink transmission with the terminal, terminal group, signal attribute, and signal attribute group as the granularity, so as to achieve signal response to the same signal with different signal attributes from different terminals, while ensuring the performance of the communication system, such as communication reliability.

[0086] In some embodiments, depending on the difference of the first signal, the response information included in the first response is also different. For example, assuming that the first signal is a preamble, then the response message can be Msg2 or RAR or RAR PDSCH, and the target downlink transmission carrying the response information can be understood as a channel or signal. For example, when the response information is Msg2 or RAR, the target downlink transmission is a RAR physical downlink shared channel (PDSCH), etc., then the repeated transmission of the target downlink transmission is the repeated transmission of the RAR PDSCH.

[0087] In an embodiment of the present application, when a network side device receives a first signal sent by multiple terminals, it can send a target downlink transmission to each of the terminals based on a repeated transmission method, wherein the target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal. Therefore, the network side device realizes signal response to the same signal with different attributes from different terminals by carrying the response information corresponding to different terminals in the target downlink transmission of repeated transmission, while ensuring the performance of the communication system.

[0088] FIG4 is a flow chart illustrating a method 400 for repeated transmission according to an exemplary embodiment of the present application. This method 400 may be, but is not limited to, performed by a network-side device, specifically, by at least one of hardware and software installed in the network-side device. In this embodiment, the method 400 may include at least the following steps.

[0089] S410: A network-side device receives first signals sent by multiple terminals.

[0090] S420: The network-side device sends a target downlink transmission to each of the terminals based on a repeated transmission method.

[0091] The target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

[0092] It is understood that the implementation process of S410-S420 can refer to the relevant description in the aforementioned method embodiment 300. Of course, in addition, in some embodiments, the method of carrying the first response in the target downlink transmission may include but is not limited to at least one of the following methods 1-3.

[0093] Mode 1: Each of the repeated downlink transmissions of the target carries the response information corresponding to the first object.

[0094] For example, assuming that the first signal is a preamble, then when multiple terminals send the same preamble (such as preamble #10) on the same time-frequency resources with different preamble enhancement attributes, the network side device may include response information of all terminals, such as RAR information, in each target downlink transmission of the repeated transmission of the preamble (preamble #10).

[0095] In some embodiments, considering that each target downlink transmission carries response information corresponding to the first object, different repeated target downlink transmissions may be transmitted using beams corresponding to different terminals. For example, assuming that three terminals send a first signal and the number of repeated transmissions is 3, the first repeated transmission may use the beam corresponding to terminal 1, the second repeated transmission may use the beam corresponding to terminal 2, and the third repeated transmission may use the beam corresponding to terminal 3. This enables terminals located at different locations to reliably receive the target downlink transmission.

[0096] Alternatively, the target downlink transmissions in different segments use different beams corresponding to the terminals, wherein each segment includes at least two target downlink transmissions that are continuously transmitted in repeated transmissions.

[0097] Optionally, the number of target downlink transmissions included in different segments is the same or different. As a typical embodiment, some segments among the multiple segments may include only one target downlink transmission.

[0098] For example, assuming that the target downlink transmission is repeated four times, and the same segment includes two consecutive target downlink transmissions, then it can be determined that the first target downlink transmission and the second target downlink transmission can belong to the same segment, the third target downlink transmission and the fourth target downlink transmission can belong to the same segment, etc. Accordingly, at this time, if four terminals send the first signal, then the first target downlink transmission and the second target downlink transmission in the same segment can use the beam corresponding to terminal 1, and the third target downlink transmission and the fourth target downlink transmission in the same segment can use the beam corresponding to any terminal other than terminal 1. In this way, terminals located in different locations can all achieve reliable reception of the target downlink transmission.

[0099] Mode 2: At least some of the target downlink transmissions of the repeated transmissions carry the response information corresponding to the first object. That is, each target downlink transmission does not contain the response information of all terminals. In other words, each target downlink transmission only contains the response information of some terminals.

[0100] For example, assuming that the first signal is a preamble, when multiple terminals send the same preamble (such as preamble #10) on the same time-frequency resources with different preamble enhancement attributes, the network side device may schedule the RAR PDSCH for the preamble (i.e., preamble #10) or each repeated transmission thereof including RAR information of some terminals.

[0101] Mode 3: The target downlink transmissions of different repeated transmissions carry response information corresponding to different first objects, wherein one target downlink transmission only includes response information corresponding to one first object.

[0102] For example, assuming that the first signal is a preamble, and multiple terminals send the same preamble on the same time-frequency resources with different preamble enhancement attributes, then the network side device will send the corresponding RAR PDSCH for each preamble enhancement attribute, that is, the target downlink transmission.

[0103] In some embodiments, the response information corresponding to different first objects carried in the target downlink transmissions of different repeated transmissions may include: the response information corresponding to different first objects is independently carried in the target downlink transmissions of different times; or, the response information corresponding to different first objects is carried in each independently scheduled target downlink transmission.

[0104] In one implementation, for the target downlink transmissions described in Methods 1-3 above, the repetition transmission resource for each target downlink transmission involved may be independently determined. Based on this, in this embodiment, response information corresponding to different terminals may be transmitted using the same repetition transmission resource, as in Method 1 above, or using different repetition transmission resources, as in Methods 2 and 3 above, without limitation herein.

[0105] Among them, if the response information corresponding to different terminals can be transmitted using different repeated transmission resources, then the response information of different terminals can be independently carried in different times of the target downlink transmission, or the response information of different terminals may be carried in the target downlink transmission of each repeated transmission.

[0106] It should be noted that the "same repeated transmission resources" mentioned in this embodiment can be understood as: having the same number of PRBs in the frequency domain and the same number of OFDM symbols in the time domain, but the same number of OFDM symbols can be located in different time slots.

[0107] Alternatively, if the response information of different terminals is carried in each independently scheduled target downlink transmission, the transmission resources of the target downlink transmission corresponding to different terminals may be independently scheduled DCI resources or multiple resources of one DCI scheduling, which is not limited here.

[0108] In addition to the aforementioned repeated transmission resources, in a possible implementation, for the target downlink transmission of repeated transmission, the number of repeated transmissions of the target downlink transmission corresponding to different first objects may be the same. For example, assuming that the first object is a terminal, then the number of repeated transmissions of the target downlink transmission corresponding to different terminals is the same, that is, each target downlink transmission includes response information of all terminals, such as RAR.

[0109] Alternatively, the number of repetitions of the target downlink transmission corresponding to at least some of the different first objects may be different. For example, the number of repetitions of the target downlink transmission is 4, of which the number of repetitions for terminal 1 is 4 and the number of repetitions for terminal 2 is 2, i.e., all 4 target downlink transmissions include response information for terminal 1, and only 2 of the target downlink transmissions include response information for terminal 2.

[0110] Based on this, in one implementation, a method for determining the number of repeated transmissions of the target downlink transmission may include at least one of the following methods 1 and 2.

[0111] Method 1: Determined according to the number of the terminals that simultaneously send the first signal.

[0112] The determination based on the number of the terminals that simultaneously transmit the first signal may include at least one of the following methods 1a to 1c.

[0113] Method 1a: Determine the number of repetitions of the target downlink transmission corresponding to the first object to be equal to the number of the terminals that simultaneously transmit the first signal. For example, if the number of the terminals that simultaneously transmit the first signal is N, then the number of repetitions of the target downlink transmission is N, where N is an integer greater than or equal to 1.

[0114] Mode 1b: Determine the number of repetitions of the target downlink transmission corresponding to the first object, which is K times the number of the terminals that simultaneously transmit the first signal, where K is an integer greater than or equal to 1. For example, if the number of the terminals that simultaneously transmit the first signal is N, then the number of repetitions of the target downlink transmission is (K*N).

[0115] Mode 1c: Determining the number of repetitions of the target downlink transmission corresponding to the first object is a function value related to the number of the terminals simultaneously transmitting the first signal. The correlation function in Mode 3 may be, but is not limited to, a linear function related to the terminals.

[0116] In some embodiments, the correlation function may be, but is not limited to, that the target number of downlink transmission repetitions is a multiple of the number of terminals, and the size of the multiple is related to the number of terminals. For example, if the number of terminals is in the interval [1, 3], then the multiple may be 3, and the corresponding target number of downlink transmission repetitions is (3 * number of terminals); if the number of terminals is in the interval [4, 6], then the multiple may be 2, and the corresponding target number of downlink transmission repetitions is (2 * number of terminals).

[0117] Method 2: Determine according to the number of repeated transmissions corresponding to each of the first objects.

[0118] For example, assuming that the first object is a terminal, and different terminals have independent repetition transmission times, such as the RAR repetition transmission number corresponding to terminal 1 is 1, the RAR repetition transmission number of terminal 2 is 2, and the RAR repetition transmission number of terminal 3 is 3, then it can be determined that the repetition transmission number of RAR PDSCH is 1+2+3, a total of 6 times.

[0119] In some embodiments, after determining the relevant information of the repeated transmission corresponding to the target downlink transmission, the network side device may send a first indication message to the terminal; wherein, the first indication message is used to indicate the relevant information of the repeated transmission, so that the terminal and the network side device have a consistent understanding of the relevant information of the repeated transmission of the target downlink transmission, thereby achieving reliable reception of the target downlink transmission, such as ensuring that each of the terminals can receive the expected response information.

[0120] The relevant information of the repeated transmission may include but is not limited to at least one of the following 11)-17).

[0121] 11) The number of repetitions of the target downlink transmission.

[0122] The indication of the number of repeated transmissions of the target downlink transmission enables each terminal to determine whether it has successfully received the target downlink transmission for a corresponding number of times.

[0123] In some embodiments, in addition to directly indicating to the terminal the number of repeated transmissions of the target downlink transmission corresponding to different first objects, the number of terminals that simultaneously send the first signal, the K value, etc. can also be indicated to the terminal, so that the terminal determines the number of repeated transmissions based on the number of terminals that simultaneously send the first signal, the K value, etc. The determination method can refer to the relevant description of the number of repeated transmissions in the aforementioned method 1-method 2.

[0124] 12) The number of repeated transmissions of the target downlink transmission corresponding to different first objects.

[0125] The indication of the number of repeated transmissions of the target downlink transmission corresponding to the different first objects enables each terminal to determine whether it has successfully received the target downlink transmission a corresponding number of times.

[0126] 13) The transmission order or transmission resources of the target downlink transmission corresponding to different first objects in the repeated transmission, so that each of the terminals can receive the desired target downlink transmission based on the transmission order or transmission resources.

[0127] In some embodiments, the transmission order or transmission resources of the target downlink transmissions corresponding to different first objects in the repeated transmission can be determined according to a first method. In this embodiment, the first method includes determining according to a predefined mapping rule or relationship, or determining by network-side device configuration, and the predefined mapping rule or relationship includes the size order of the IDs of each of the first objects.

[0128] Among them, when determining the transmission order or transmission resources of the target downlink transmission corresponding to different first objects in the repeated transmission according to predefined mapping rules or relationships, it can be determined from large to small or from small to large according to the size of the ID of each first object.

[0129] For example, assuming that preamble #10 corresponds to four scrambled preamble enhancement attributes, such as scrambling ID #0, scrambling ID #1, scrambling ID #2, and scrambling ID #3, and each preamble enhancement attribute is only transmitted once for RAR PDSCH, then the corresponding RAR PDSCH is determined according to the size of the preamble enhancement attribute ID. For example, if determined in ascending order, the RAR PDSCH of scrambling ID #0 or its corresponding terminal is the first transmission in the repeated transmission, the RAR PDSCH of scrambling ID #1 or its corresponding terminal is the second transmission in the repeated transmission, the RAR PDSCH of scrambling ID #2 or its corresponding terminal is the third transmission in the repeated transmission, and the RAR PDSCH of scrambling ID #3 or its corresponding terminal is the fourth transmission in the repeated transmission.

[0130] In addition, when the network side device configures the transmission order or transmission resources of the target downlink transmission corresponding to different first objects in the repeated transmission, the network side device can dynamically indicate the configured transmission resources or transmission order to the terminal through RAR DCI after configuring the transmission resources or transmission order corresponding to different first objects, so that the terminal can achieve reliable reception of its own response information based on RAR DCI.

[0131] 14) Starting points of repeated transmissions of the target downlink transmission corresponding to different first objects, thereby enabling each terminal to receive the target downlink transmission based on the starting point of the repeated transmission. The starting point of the repeated transmission can be understood as the transmission order of the target downlink transmission corresponding to different first objects in the repeated transmission.

[0132] In some embodiments, the starting points of repeated transmissions of the target downlink transmissions corresponding to different first objects are the same, that is, in the repeated target downlink transmissions, the offsets of the first target downlink transmissions corresponding to different first objects are the same. The offset may be predefined by the protocol, configured via a system message (such as SIB1), configured via a related proprietary RRC parameter, or indicated via MAC-CE or DCI.

[0133] For example, assuming that the target downlink transmission is repeated four times, of which terminal 1 is repeated four times and terminal 2 is repeated twice, then the response information of terminal 1 may be located in the four target downlink transmissions of the first transmission (rep#1), rep#2, rep#3, and rep#4, and the response information of terminal 2 may be located in the two target downlink transmissions of rep#1 and rep#2.

[0134] In other embodiments, the starting points of the repeated transmissions of the target downlink transmission corresponding to at least some of the different first objects are different, that is, the offsets of the first target downlink transmissions corresponding to at least some of the different first objects are different. The offsets may be dynamically indicated to the terminal via DCI at a per-UE granularity, so that the terminal can receive its own target downlink transmission based on the offsets.

[0135] For example, assuming that the number of repetitions of the target downlink transmission is 4 times, of which the number of repetitions of terminal 1 is 3 times and the number of repetitions of terminal 2 is 2 times, then the response information of terminal 1 can be located in the three target downlink transmissions of rep#1, rep#2, and rep#3, while the response information of terminal 2 can be located in the two target downlink transmissions of rep#3 and rep#4.

[0136] 15) An offset for repeated transmission of the target downlink transmission corresponding to different first objects.

[0137] Among them, the offset value can be but is not limited to the offset mentioned in the above 14), so that the terminal can reliably receive its own target downlink transmission based on the offset, such as determining the starting point of the repeated transmission of its corresponding target downlink transmission based on the offset.

[0138] 16) Whether the target downlink transmissions corresponding to different first objects are repeatedly transmitted.

[0139] 17) The repeated transmission resources of the target downlink transmission, wherein the repeated transmission resources of the target downlink transmission are used for receiving the target downlink transmission of each terminal.

[0140] In some embodiments, after receiving the corresponding target downlink transmission according to the relevant information of the repeated transmission in the aforementioned 11)-17), the terminal can further determine whether the signal attribute ID carried in the target downlink transmission is consistent with the signal attribute ID of the first signal sent by itself. If they are consistent, the corresponding response information is determined to be the expected response information.

[0141] Alternatively, in addition to the relevant information of repeated transmission in the aforementioned 11)-17), after receiving the target downlink transmission, the terminal can determine whether it is the expected downlink transmission based on whether it carries the signal attribute ID of the first signal sent by itself.

[0142] In some embodiments, the first indication information described in 11)-17) above can be dynamically indicated through DCI, semi-statically configured through SIB1, or configured through network pre-configuration or protocol pre-definition, etc., and is not limited here.

[0143] If dynamic indication is performed through the DCI, then the DCI may be a DCI used for target downlink transmission scheduling, such as RAR DCI.

[0144] For example, assuming that the first signal is a preamble, that is, preamble #10 generates two new preamble sequences through two scrambling (scrambling ID SC_ID0, SC_ID1) to send the preamble to two users, then the network side device schedules a RAR PDSCH to be transmitted repeatedly 5 times, and indicates in the RAR DCI that the number of RAR repetitions corresponding to the preamble sequence after SC_ID0 scrambling is 2, corresponding to the first two RAR PDSCH transmissions, and the number of RAR repetitions corresponding to the preamble sequence after SC_ID1 scrambling is 3, corresponding to the last 3 RAR PDSCH transmissions.

[0145] In some embodiments, the RAR DCI may configure the number of RAR PDSCH repetition transmissions for each first object separately, or may uniformly configure the same number of RAR PDSCH repetition transmissions for each first object, which is not limited here.

[0146] In some embodiments, when the first indication information is used to indicate the related information of the repeated transmission, the indication granularity can be at least one of per terminal, per terminal group, per signal attribute, and per signal attribute group. That is, the first indication information can be indicated at a granularity of per terminal, per terminal group, per signal attribute, or per signal attribute group, thereby increasing the flexibility of indicating the related information of the repeated transmission.

[0147] Among them, the terminal group includes at least one terminal, and the signal attribute group includes at least one signal attribute, that is, each terminal in the same terminal group has the same related information of repeated transmission, and the related information of repeated transmission corresponding to the signal attributes in the same signal attribute group is the same.

[0148] Furthermore, for indications of different granularities, the retransmitted related information may be indicated using the same first indication information or different first indication information, without limitation. For example, for indications of repeated related information at the granularity of terminal, terminal group, signal attribute, and signal attribute group, the same first indication information may be used or four different first indication information may be used, without limitation.

[0149] In this embodiment, for the situation where the same first signal is sent on the same time-frequency resources based on different signal attributes, a repeated transmission scheme of the response information of the first signal is further provided, which can effectively improve the transmission reliability of the response information of the first signal.

[0150] FIG5 is a flow chart of a method 500 for repeated transmission according to an exemplary embodiment of the present application. This method 500 may be, but is not limited to, performed by a network-side device, specifically, by at least one of hardware and software installed in the network-side device. In this embodiment, the method 500 may include at least the following steps.

[0151] S510: A network-side device receives first signals sent by multiple terminals.

[0152] S520: The network side device sends a target downlink transmission to each of the terminals based on a repeated transmission method.

[0153] The target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

[0154] It can be understood that the implementation process of S510-S520 can refer to the relevant description in the aforementioned method embodiment 300 or 400, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0155] S530: The network-side device receives a second signal repeatedly sent by the terminal.

[0156] The transmission resource of the second signal is determined based on the first response.

[0157] It is understandable that, for the terminal, the terminal may repeatedly transmit the second signal based on the first response carried by the received target downlink transmission. For example, when the terminal determines that the received target downlink transmission carries the first response, and at least one signal attribute ID among the signal attribute IDs carried in the first response is consistent with the signal attribute of the first signal sent by itself, that is, the terminal determines that the target downlink transmission carries the response information it expects, then the terminal may repeatedly send the second signal to the network-side device based on the transmission resources indicated in the first response to improve the reliability of the second signal transmission.

[0158] Exemplarily, assuming that the first signal is a preamble and the first response is Msg2, the terminal may, upon determining that at least one of the preamble numbers carried in Msg2 is consistent with the ID of a preamble sent by the terminal, and at least one of the preamble signal attribute IDs carried in Msg2 is consistent with the ID of a preamble signal attribute sent by the terminal, repeatedly send Msg3 to the network-side device based on the transmission resources indicated in Msg2 to improve the reliability of the Msg3 transmission. The Msg3 may carry contention resolution information, etc.

[0159] In some embodiments, before the terminal repeatedly transmits the second signal to the network-side device, the terminal first determines the number of repeated transmissions of the second signal, and repeatedly transmits the second signal based on the number of repeated transmissions.

[0160] In some embodiments, the number of repeated transmissions of the second signal or the method for determining the number of repeated transmissions can be achieved by protocol agreement, protocol pre-definition, or network side device indication, etc., and is not limited here.

[0161] Assuming that the number of repeated transmissions of the second signal can be implemented according to a protocol agreement or a predefined protocol, the terminal may determine the number of repeated transmissions of the second signal according to a rule agreed upon in the protocol or predefined in the protocol. The agreed upon in the protocol or predefined in the protocol rule includes the number of repeated transmissions of the second signal or a method for determining the number of repeated transmissions of the second signal.

[0162] The method for determining the number of repeated transmissions of the second signal includes at least one of the following methods 1 to 3.

[0163] Mode 1: Determine that the number of repeated transmissions of the second signal is the same as the number of repeated transmissions of the target downlink transmission.

[0164] Mode 2: determining the number of repeated transmissions of the second signal is a function related to the number of repeated transmissions of the target downlink transmission.

[0165] Mode 3: Determine the number of repeated transmissions of the second signal based on the number of times the terminal successfully receives the target downlink transmission, or based on the number of received target downlink transmissions that include the signal attributes of the first signal sent by itself. For example, the number of repeated transmissions of the second signal of the terminal is the same as the number of times the terminal successfully receives the target downlink transmission. It is understandable that

[0166] Assuming that the number of repeated transmissions of the second signal can be achieved according to the method indicated by the network side device, then the terminal can receive the second indication information sent by the network side device, wherein the second indication information is used to indicate the number of repeated transmissions of the second signal or the method for determining the number of repeated transmissions of the second signal.

[0167] Among them, if the second indication information can be carried in the first response, at least one of the target downlink transmission, scheduling information for scheduling the target downlink transmission, scheduling information for scheduling the second signal retransmission, and at least one item of SIB1.

[0168] When the second indication information is carried in the first response, the second indication information may be, but is not limited to, carried in the respective MAC sub PDUs. For example, assuming the second signal is Msg3, then if the RARs of different terminals are transmitted using the same resources, the RAR information of the different terminals may be located in different MAC subPDUs, and each of the MAC subPDUs includes the second indication information for the corresponding terminal, such as the number of repeated transmissions of Msg3 and the method for determining the number of repeated transmissions of Msg3.

[0169] In one implementation, if the number of repeated transmissions of Msg3 for different terminals is independently indicated in the RAR, then the RAR includes binding information between the number of repeated transmissions of Msg3 and preamble enhancement attributes, such as beam index, scrambling ID, etc. For example, it is assumed that there is a channel state information reference signal (CSI-RS) resource list, and the resource list contains at least one resource consisting of {CSI-RS resource indicator (CSI-RS Resource Indicator, CRI), Msg3 repetition number (repetition number), uplink grant (UL-grant)}.

[0170] When the second indication information is carried in at least one target downlink transmission, such as by carrying the second indication information in a target downlink transmission of a repeated transmission, the second indication information can be located in a common field of the target downlink transmission, so that terminals with the same signal ID (such as preamble ID) can receive it.

[0171] When the second indication information is carried in the scheduling information used to schedule the target downlink transmission, the scheduling information may be, but is not limited to, RAR DCI, etc., so as to achieve dynamic indication of the second indication information.

[0172] When the second indication information is carried in the scheduling information for scheduling the retransmission of the second signal, the scheduling information may be DCI or the like, so as to realize dynamic indication of the second indication information.

[0173] When the second indication information is SIB1, the SIB1 may semi-statically indicate the number of repeated transmissions of the second signal. In some embodiments, when the second indication information is carried by the SIB1, the second indication information may also be used to indicate that the number of repeated transmissions is effective for at least one of Msg1, Msg2, and Msg4.

[0174] In some embodiments, when indicating the number of repeated transmissions of the second signal or the method for determining the number of repeated transmissions of the second signal through the second indication information, the indication granularity can be at least one of each terminal, each terminal group, each signal attribute, and each signal attribute group. That is, the second indication information can be indicated with the granularity of each terminal, each terminal group, each signal attribute, or each signal attribute group, thereby increasing the flexibility of indicating the number of repeated transmissions of the second signal or the method for determining the number of repeated transmissions of the second signal. The terminal group includes at least one terminal, and the signal attribute group includes at least one signal attribute.

[0175] In which, the terminal group includes at least one of the terminals, and the signal attribute group includes at least one of the signal attributes, that is, the number of repeated transmissions of the second signal corresponding to each terminal in the same terminal group is the same, and the relevant information of the repeated transmission of the second signal corresponding to the signal attributes in the same signal attribute group is the same.

[0176] In some embodiments, the number of repeated transmissions of the second signal corresponding to different terminals may be indicated by the same indication information or by different indication information.

[0177] In this embodiment, for the situation where the same first signal is sent on the same time-frequency resources based on different signal attributes, a repeated transmission scheme for the second signal is further provided, which can effectively improve the reliability of the second signal transmission.

[0178] It is worth noting that the repeated transmission of the RAR or Msg3 mentioned in the context of this application may include the repeated transmission of the data channel carried by the RAR or Msg3, and may also include the repeated transmission of the control signal for scheduling the transmission of the data channel.

[0179] FIG6 is a flow chart of a method 600 for repeated transmission according to an exemplary embodiment of the present application. This method 600 may be, but is not limited to, performed by a terminal, specifically by at least one of hardware and software installed in the terminal. In this embodiment, the method 600 may include at least the following steps.

[0180] S610: The terminal sends a first signal to a network-side device.

[0181] S620, the terminal receives a target downlink transmission sent by the network side device based on a repeated transmission mode;

[0182] The target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

[0183] In some embodiments, the first object includes at least one of the following: a terminal that sends the first signal; a terminal group to which the terminal that sends the first signal belongs; a signal attribute of the first signal; a signal attribute group to which the signal attribute of the first signal belongs.

[0184] In some embodiments, the target downlink transmission carries a first response, including at least one of the following: each repeated transmission of the target downlink transmission carries response information corresponding to the first object; at least some of the repeated transmissions of the target downlink transmission carry response information corresponding to the first object; different repeated transmissions of the target downlink transmission carry response information corresponding to different first objects.

[0185] In some embodiments, the target downlink transmissions of the repeated transmissions carry response information corresponding to different first objects, including at least one of the following: response information corresponding to different first objects is independently carried in the target downlink transmissions of the repeated transmissions; response information corresponding to different first objects is carried in each independently scheduled target downlink transmission.

[0186] In some embodiments, the number of repeated transmissions of the target downlink transmission corresponding to different first objects is the same, or the number of repeated transmissions of the target downlink transmission corresponding to at least some of the different first objects is different.

[0187] In some embodiments, the target downlink transmissions of different repeated transmissions are transmitted using different beams corresponding to the terminals, or the target downlink transmissions located in different segments are transmitted using different beams corresponding to the terminals, wherein each segment includes at least two target downlink transmissions transmitted continuously in the repeated transmissions.

[0188] In some embodiments, the method further includes: the terminal obtaining first indication information; wherein the first indication information is used to indicate relevant information of the repeated transmission.

[0189] In some embodiments, the relevant information of the repeated transmission includes at least one of the following: the number of repeated transmissions of the target downlink transmission; the repeated transmission resources of the target downlink transmission; the number of repeated transmissions of the target downlink transmission corresponding to different first objects; the transmission order or transmission resources of the target downlink transmission corresponding to different first objects in the repeated transmission; the starting point of the repeated transmission of the target downlink transmission corresponding to different first objects; the offset of the repeated transmission of the target downlink transmission corresponding to different first objects; and whether the target downlink transmission corresponding to different first objects is repeated.

[0190] In some embodiments, the number of repeated transmissions of the target downlink transmission includes at least one of the following: the number of repeated transmissions of the target downlink transmission is the same as the number of terminals that simultaneously send the first signal; the number of repeated transmissions of the target downlink transmission is K times the number of terminals that simultaneously send the first signal, where K is an integer greater than or equal to 1; the number of repeated transmissions of the target downlink transmission is a related function value of the number of terminals that simultaneously send the first signal.

[0191] In some embodiments, the transmission order or transmission resources of the target downlink transmission corresponding to different first objects in the repeated transmission are determined by at least one of the following: a predefined mapping rule or relationship, and the predefined mapping rule or relationship includes the correspondence between the ID of each first object and the repeated transmission resource or retransmission order; configured by the network side device.

[0192] In some embodiments, the starting point of the repeated transmission satisfies one of the following: the starting points of the repeated transmission of the target downlink transmission corresponding to different first objects are the same; the starting points of at least part of the repeated transmission of the target downlink transmission corresponding to different first objects are different.

[0193] In some embodiments, the indication granularity of the first indication information includes at least one of the following: indication with each terminal as the granularity; indication with each terminal group as the granularity, wherein the terminal group includes at least one terminal; indication with each signal attribute as the granularity; indication with each signal attribute group as the granularity, wherein the signal attribute group includes at least one signal attribute.

[0194] In some embodiments, the first indication information is carried or configured by at least one of the following: downlink control information DCI; system information block SIB1; network pre-configuration; protocol pre-definition.

[0195] In some embodiments, the method further includes: the terminal repeatedly transmitting the second signal according to the transmission resources indicated in the first response.

[0196] In some embodiments, before the terminal repeatedly transmits the second signal according to the transmission resources indicated in the first response, the method also includes: the terminal determines the number of repeated transmissions of the second signal according to at least one of the following: a protocol agreement or a protocol predefined rule, wherein the protocol agreement or the protocol predefined rule includes the number of repeated transmissions of the second signal or a method for determining the number of repeated transmissions of the second signal; second indication information, wherein the second indication information is used to indicate the number of repeated transmissions of the second signal or a method for determining the number of repeated transmissions of the second signal.

[0197] In some embodiments, the method for determining the number of repeated transmissions of the second signal includes at least one of the following: determining that the number of repeated transmissions of the second signal is the same as the number of repeated transmissions of the target downlink transmission corresponding to the first object; determining that the number of repeated transmissions of the second signal is a related function value of the number of repeated transmissions of the target downlink transmission corresponding to the first object; determining the number of repeated transmissions of the second signal based on the number of times the target downlink transmission is successfully received by the terminal itself.

[0198] In some embodiments, the second indication information is carried in at least one of the following: the first response; at least one of the target downlink transmissions; scheduling information for scheduling the target downlink transmission; scheduling information for scheduling retransmission of the second signal; SIB1.

[0199] In some embodiments, when the second indication information is carried in the first response, the second indication information is further used to indicate an association between the number of repeated transmissions of the second signal and the signal attribute.

[0200] In some embodiments, when the second signal is Msg3 and the second indication information is carried in the SIB1, the second indication information is also used to indicate that the number of repeated transmissions is effective for at least one of Msg1, Msg2, and Msg4.

[0201] In some embodiments, the indication granularity of the second indication information includes at least one of the following: indication with each terminal as the granularity; indication with each terminal group as the granularity, wherein the terminal group includes at least one terminal; indication with each signal attribute as the granularity; indication with each signal attribute group as the granularity, wherein the signal attribute group includes at least one signal attribute.

[0202] In some embodiments, the number of repeated transmissions of the second signal corresponding to different terminals is indicated by the same indication information or by different indication information.

[0203] In some embodiments, the first signal includes at least one of message Msg1 preamble, MsgA preamble, MsgA physical uplink shared channel PUSCH, PUSCH without random access RACH less, uplink activation signal, uplink wake-up signal, sounding reference signal SRS, Msg3 PUSCH, and Msg5 PUSCH.

[0204] It can be understood that the implementation process of each implementation method in method embodiment 600 can refer to the relevant description in the aforementioned method embodiments 200-400, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0205] The embodiment of the present application provides a method for repeated transmission, which can be performed by a repeated transmission device. The embodiment of the present application takes the repeated transmission method performed by the repeated transmission device as an example to illustrate the repeated transmission device provided by the embodiment of the present application.

[0206] As shown in Figure 7, it is a structural diagram of a repeated transmission device 700 provided in an embodiment of the present application, and the device 700 includes: a sending module 710, used to send a first signal to a network side device; a receiving module 720, used to receive a target downlink transmission sent by the network side device based on a repeated transmission method; wherein the target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

[0207] In some embodiments, the first object includes at least one of the following: a terminal that sends the first signal; a terminal group to which the terminal that sends the first signal belongs; a signal attribute of the first signal; a signal attribute group to which the signal attribute of the first signal belongs.

[0208] In some embodiments, the target downlink transmission carries a first response, including at least one of the following: each repeated transmission of the target downlink transmission carries response information corresponding to the first object; at least some of the repeated transmissions of the target downlink transmission carry response information corresponding to the first object; different repeated transmissions of the target downlink transmission carry response information corresponding to different first objects.

[0209] In some embodiments, the target downlink transmissions of the repeated transmissions carry response information corresponding to different first objects, including at least one of the following: response information corresponding to different first objects is independently carried in the target downlink transmissions of the repeated transmissions; response information corresponding to different first objects is carried in each independently scheduled target downlink transmission.

[0210] In some embodiments, the target downlink transmissions corresponding to different first objects have the same number of repeated transmissions.

[0211] In some embodiments, the target downlink transmissions of different repeated transmissions are transmitted using different beams corresponding to the terminals, or the target downlink transmissions located in different segments are transmitted using different beams corresponding to the terminals, wherein each segment includes at least two target downlink transmissions transmitted continuously in the repeated transmissions.

[0212] In some embodiments, the receiving module 720 is further used to: obtain first indication information; wherein the first indication information is used to indicate the relevant information of the repeated transmission.

[0213] In some embodiments, the relevant information of the repeated transmission includes at least one of the following: the number of repeated transmissions of the target downlink transmission; the repeated transmission resources of the target downlink transmission; the number of repeated transmissions of the target downlink transmission corresponding to different first objects; the transmission order or transmission resources of the target downlink transmission corresponding to different first objects in the repeated transmission; the starting point of the repeated transmission of the target downlink transmission corresponding to different first objects; the offset of the repeated transmission of the target downlink transmission corresponding to different first objects; and whether the target downlink transmission corresponding to different first objects is repeated.

[0214] In some embodiments, the number of repeated transmissions of the target downlink transmission includes at least one of the following: the number of repeated transmissions of the target downlink transmission is the same as the number of terminals that simultaneously send the first signal; the number of repeated transmissions of the target downlink transmission is K times the number of terminals that simultaneously send the first signal, where K is an integer greater than or equal to 1; the number of repeated transmissions of the target downlink transmission is a related function value of the number of terminals that simultaneously send the first signal.

[0215] In some embodiments, the transmission order or transmission resources of the target downlink transmission corresponding to different first objects in the repeated transmission are determined by at least one of the following: a predefined mapping rule or relationship, and the predefined mapping rule or relationship includes the correspondence between the ID of each first object and the repeated transmission resource or retransmission order; configured by the network side device.

[0216] In some embodiments, the starting point of the repeated transmission satisfies one of the following: the starting points of the repeated transmission of the target downlink transmission corresponding to different first objects are the same; the starting points of at least part of the repeated transmission of the target downlink transmission corresponding to different first objects are different.

[0217] In some embodiments, the indication granularity of the first indication information includes at least one of the following: indication with each terminal as the granularity; indication with each terminal group as the granularity, wherein the terminal group includes at least one terminal; indication with each signal attribute as the granularity; indication with each signal attribute group as the granularity, wherein the signal attribute group includes at least one signal attribute.

[0218] In some embodiments, the first indication information is carried or configured by at least one of the following: downlink control information DCI; system information block SIB1; network pre-configuration; protocol pre-definition.

[0219] In some embodiments, the sending module 710 is further configured to: repeatedly transmit the second signal according to the transmission resources indicated in the first response.

[0220] In some embodiments, before the repeated transmission of the second signal according to the transmission resources indicated in the first response, the sending module 710 is also used to: determine the number of repeated transmissions of the second signal according to at least one of the following: a protocol agreement or a protocol predefined rule, wherein the protocol agreement or the protocol predefined rule includes the number of repeated transmissions of the second signal or a method for determining the number of repeated transmissions of the second signal; second indication information, wherein the second indication information is used to indicate the number of repeated transmissions of the second signal or a method for determining the number of repeated transmissions of the second signal.

[0221] In some embodiments, the method for determining the number of repeated transmissions of the second signal includes at least one of the following: determining that the number of repeated transmissions of the second signal is the same as the number of repeated transmissions of the target downlink transmission corresponding to the first object; determining that the number of repeated transmissions of the second signal is a related function value of the number of repeated transmissions of the target downlink transmission corresponding to the first object; determining the number of repeated transmissions of the second signal based on the number of times the target downlink transmission is successfully received by the terminal itself.

[0222] In some embodiments, the second indication information is carried in at least one of the following: the first response; at least one of the target downlink transmissions; scheduling information for scheduling the target downlink transmission; scheduling information for scheduling retransmission of the second signal; SIB1.

[0223] In some embodiments, when the second indication information is carried in the first response, the second indication information is further used to indicate an association between the number of repeated transmissions of the second signal and the signal attribute.

[0224] In some embodiments, when the second signal is Msg3 and the second indication information is carried in the SIB1, the second indication information is also used to indicate that the number of repeated transmissions is effective for at least one of Msg1, Msg2, and Msg4.

[0225] In some embodiments, the indication granularity of the second indication information includes at least one of the following: indication with each terminal as the granularity; indication with each terminal group as the granularity, wherein the terminal group includes at least one terminal; indication with each signal attribute as the granularity; indication with each signal attribute group as the granularity, wherein the signal attribute group includes at least one signal attribute.

[0226] In some embodiments, the number of repeated transmissions of the second signal corresponding to different terminals is indicated by the same indication information or by different indication information.

[0227] In some embodiments, the first signal includes at least one of message Msg1 preamble, MsgA preamble, MsgA physical uplink shared channel PUSCH, PUSCH without random access RACH less, uplink activation signal, uplink wake-up signal, sounding reference signal SRS, Msg3 PUSCH, and Msg5 PUSCH.

[0228] The apparatus 700 for repeated transmission 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 it can be a device other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and the other device can be a server, a network attached storage (NAS), etc., which is not specifically limited in the embodiment of the present application.

[0229] The repeated transmission device 700 provided in the embodiment of the present application can implement the various processes implemented in the method embodiment of Figure 6 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0230] As shown in Figure 8, it is a structural diagram of a repeated transmission device 800 provided in an embodiment of the present application, and the device 800 includes: a receiving module 810, used to receive a first signal sent by multiple terminals; a sending module 810, used to send a target downlink transmission to each of the terminals based on a repeated transmission method; wherein, the target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

[0231] In some embodiments, the first object includes at least one of the following: a terminal that sends the first signal; a terminal group to which the terminal that sends the first signal belongs; a signal attribute of the first signal; a signal attribute group described by the signal attribute of the first signal.

[0232] In some embodiments, the target downlink transmission carries a first response including at least one of the following: each repeated transmission of the target downlink transmission carries response information corresponding to the first object; at least some of the repeated transmissions of the target downlink transmission carry response information corresponding to the first object; different repeated transmissions of the target downlink transmission carry response information corresponding to different first objects.

[0233] In some embodiments, the target downlink transmissions of the repeated transmissions carry response information corresponding to different first objects, including at least one of the following: response information corresponding to different first objects is independently carried in the target downlink transmissions of the repeated transmissions; response information corresponding to different first objects is carried in each independently scheduled target downlink transmission.

[0234] In some embodiments, the target downlink transmissions corresponding to different first objects have the same number of repeated transmissions.

[0235] In some embodiments, the target downlink transmissions of different repeated transmissions are transmitted using different beams corresponding to the terminals, or the target downlink transmissions located in different segments are transmitted using different beams corresponding to the terminals, wherein each segment includes at least two target downlink transmissions transmitted continuously in the repeated transmissions.

[0236] In some embodiments, the sending module 820 is further used to: send first indication information to the terminal; wherein the first indication information is used to indicate the relevant information of the repeated transmission.

[0237] In some embodiments, the relevant information of the repeated transmission includes at least one of the following: the number of repeated transmissions of the target downlink transmission; the number of repeated transmissions of the target downlink transmission corresponding to different first objects; the transmission order or transmission resources of the target downlink transmission corresponding to different first objects in the repeated transmission; the starting point of the repeated transmission of the target downlink transmission corresponding to different first objects; the offset of the repeated transmission of the target downlink transmission corresponding to different first objects; and whether the target downlink transmission corresponding to different first objects is repeated.

[0238] In some embodiments, the number of repeated transmissions of the target downlink transmission includes at least one of the following: the number of repeated transmissions of the target downlink transmission is the same as the number of the terminals that simultaneously send the first signal; the number of repeated transmissions of the target downlink transmission is K times the number of the terminals that simultaneously send the first signal, where K is an integer greater than or equal to 1; the number of repeated transmissions of the target downlink transmission is a related function value of the number of the terminals that simultaneously send the first signal.

[0239] In some embodiments, the transmission order or transmission resources of the target downlink transmission corresponding to different first objects in the repeated transmission are determined by at least one of the following: a predefined mapping rule or relationship, and the predefined mapping rule or relationship includes the correspondence between the ID of each first object and the repeated transmission resource or retransmission order; configured by the network side device.

[0240] In some embodiments, the starting point of the repeated transmission satisfies one of the following: the starting points of the repeated transmission of the target downlink transmission corresponding to different first objects are the same; the starting points of at least part of the repeated transmission of the target downlink transmission corresponding to different first objects are different.

[0241] In some embodiments, the indication granularity of the first indication information includes at least one of the following: indication with each terminal as the granularity; indication with each terminal group as the granularity, wherein the terminal group includes at least one terminal; indication with each signal attribute as the granularity; indication with each signal attribute group as the granularity, wherein the signal attribute group includes at least one signal attribute.

[0242] In some embodiments, the first indication information is carried or configured by at least one of the following: downlink control information DCI; system information block SIB1; network pre-configuration; protocol pre-definition.

[0243] In some embodiments, the receiving module 810 is further configured to: receive a second signal repeatedly sent by the terminal; wherein a transmission resource of the second signal is determined based on the first response.

[0244] In some embodiments, the sending module 820 is further used to: send second indication information to the terminal; wherein the second indication information is used to indicate the number of repeated transmissions of the second signal or a method for determining the number of repeated transmissions of the second signal.

[0245] In some embodiments, the method for determining the number of repeated transmissions of the second signal includes at least one of the following: determining that the number of repeated transmissions of the second signal is the same as the number of repeated transmissions of the target downlink transmission; determining that the number of repeated transmissions of the second signal is a related function of the number of repeated transmissions of the target downlink transmission; determining the number of repeated transmissions of the second signal based on the number of times the target downlink transmission is successfully received by the terminal itself.

[0246] In some embodiments, the second indication information is carried in at least one of the following: the first response; at least one of the target downlink transmissions; scheduling information for scheduling the target downlink transmission; scheduling information for scheduling retransmission of the second signal; SIB1.

[0247] In some embodiments, when the second indication information is carried in the first response, the second indication information is further used to indicate an association between the number of repeated transmissions of the second signal and the signal attribute.

[0248] In some embodiments, when the second signal is Msg3 and the second indication information is carried in the SIB1, the second indication information is also used to indicate that the number of repeated transmissions is effective for at least one of Msg1, Msg2, and Msg4.

[0249] In some embodiments, the indication granularity of the second indication information includes at least one of the following: indication with each terminal as the granularity; indication with each terminal group as the granularity, wherein the terminal group includes at least one terminal; indication with each signal attribute as the granularity; indication with each signal attribute group as the granularity, wherein the signal attribute group includes at least one signal attribute.

[0250] In some embodiments, the number of repeated transmissions of the second signal corresponding to different terminals is indicated by the same indication information or by different indication information.

[0251] In some embodiments, the first signal includes at least one of message Msg1 preamble, MsgA preamble, MsgA physical uplink shared channel PUSCH, PUSCH without random access RACH less, uplink activation signal, uplink wake-up signal, sounding reference signal SRS, Msg3 PUSCH, and Msg5 PUSCH.

[0252] The apparatus 800 for repeated transmission in the embodiment of the present application can be an electronic device or a component of an electronic device, such as an integrated circuit or chip. The electronic device can be a network-side device or a device other than a network-side device. For example, the network-side device can include, but is not limited to, the types of network-side devices 12 listed above, and is not specifically limited in the embodiment of the present application.

[0253] The repeated transmission device 800 provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 3 to 5 and achieve the same technical effects. To avoid repetition, they will not be described here.

[0254] As shown in Figure 9, an embodiment of the present application further provides a communication device 900, including a processor 901 and a memory 902. The memory 902 stores a program or instruction that can be run on the processor 901. For example, when the communication device 900 is a terminal, the program or instruction is executed by the processor 901 to implement the various steps of the above-mentioned repeated transmission method embodiment and can achieve the same technical effect. When the communication device 900 is a network-side device, the program or instruction is executed by the processor 901 to implement the various steps of the above-mentioned repeated transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0255] The present application also provides a terminal 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 FIG6 . This terminal embodiment corresponds to the aforementioned terminal-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this terminal embodiment and can achieve the same technical effects. Specifically, FIG10 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0256] The terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009 and at least some of the components of the processor 1010.

[0257] Those skilled in the art will appreciate that the terminal 1000 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1010 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG10 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0258] It should be understood that in an embodiment of the present application, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042, and the graphics processor 10041 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 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. Other input devices 10072 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 an operating stick, which will not be repeated here.

[0259] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1001 may transmit the data to the processor 1010 for processing. Furthermore, the RF unit 1001 may send uplink data to the network-side device. Typically, the RF unit 1001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0260] The memory 1009 can be used to store software programs or instructions and various data. The memory 1009 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 1009 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. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 1009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0261] Processor 1010 may include one or more processing units. Optionally, processor 1010 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 1010.

[0262] Among them, the radio frequency unit 1001 is used to send a first signal to the network side device; the radio frequency unit 1001 is used to receive the target downlink transmission sent by the network side device based on the repeated transmission mode; wherein the target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

[0263] In some embodiments, the first object includes at least one of the following: a terminal that sends the first signal; a terminal group to which the terminal that sends the first signal belongs; a signal attribute of the first signal; a signal attribute group to which the signal attribute of the first signal belongs.

[0264] In some embodiments, the target downlink transmission carries a first response, including at least one of the following: each repeated transmission of the target downlink transmission carries response information corresponding to the first object; at least some of the repeated transmissions of the target downlink transmission carry response information corresponding to the first object; different repeated transmissions of the target downlink transmission carry response information corresponding to different first objects.

[0265] In some embodiments, the target downlink transmissions of the repeated transmissions carry response information corresponding to different first objects, including at least one of the following: response information corresponding to different first objects is independently carried in the target downlink transmissions of the repeated transmissions; response information corresponding to different first objects is carried in each independently scheduled target downlink transmission.

[0266] In some embodiments, the target downlink transmission corresponding to different first objects has the same number of repeated transmissions.

[0267] In some embodiments, the target downlink transmissions of different repeated transmissions are transmitted using different beams corresponding to the terminals, or the target downlink transmissions located in different segments are transmitted using different beams corresponding to the terminals, wherein each segment includes at least two target downlink transmissions transmitted continuously in the repeated transmissions.

[0268] In some embodiments, the radio frequency unit 1001 is further used to: obtain first indication information; wherein the first indication information is used to indicate the relevant information of the repeated transmission.

[0269] In some embodiments, the relevant information of the repeated transmission includes at least one of the following: the number of repeated transmissions of the target downlink transmission; the repeated transmission resources of the target downlink transmission; the number of repeated transmissions of the target downlink transmission corresponding to different first objects; the transmission order or transmission resources of the target downlink transmission corresponding to different first objects in the repeated transmission; the starting point of the repeated transmission of the target downlink transmission corresponding to different first objects; the offset of the repeated transmission of the target downlink transmission corresponding to different first objects; and whether the target downlink transmission corresponding to different first objects is repeated.

[0270] In some embodiments, the number of repeated transmissions of the target downlink transmission includes at least one of the following: the number of repeated transmissions of the target downlink transmission is the same as the number of terminals that simultaneously send the first signal; the number of repeated transmissions of the target downlink transmission is K times the number of terminals that simultaneously send the first signal, where K is an integer greater than or equal to 1; the number of repeated transmissions of the target downlink transmission is a related function value of the number of terminals that simultaneously send the first signal.

[0271] In some embodiments, the transmission order or transmission resources of the target downlink transmission corresponding to different first objects in the repeated transmission are determined by at least one of the following: a predefined mapping rule or relationship, and the predefined mapping rule or relationship includes the correspondence between the ID of each first object and the repeated transmission resource or retransmission order; configured by the network side device.

[0272] In some embodiments, the starting point of the repeated transmission satisfies one of the following: the starting points of the repeated transmission of the target downlink transmission corresponding to different first objects are the same; the starting points of at least part of the repeated transmission of the target downlink transmission corresponding to different first objects are different.

[0273] In some embodiments, the indication granularity of the first indication information includes at least one of the following: indication with each terminal as the granularity; indication with each terminal group as the granularity, wherein the terminal group includes at least one terminal; indication with each signal attribute as the granularity; indication with each signal attribute group as the granularity, wherein the signal attribute group includes at least one signal attribute.

[0274] In some embodiments, the first indication information is carried or configured by at least one of the following: downlink control information DCI; system information block SIB1; network pre-configuration; protocol pre-definition.

[0275] In some embodiments, the radio frequency unit 1001 is further configured to: repeatedly transmit the second signal according to the transmission resources indicated in the first response.

[0276] In some embodiments, before the repeated transmission of the second signal according to the transmission resources indicated in the first response, the radio frequency unit 1001 is further used to: determine the number of repeated transmissions of the second signal according to at least one of the following: a protocol agreement or a protocol predefined rule, wherein the protocol agreement or the protocol predefined rule includes the number of repeated transmissions of the second signal or a method for determining the number of repeated transmissions of the second signal; second indication information, wherein the second indication information is used to indicate the number of repeated transmissions of the second signal or a method for determining the number of repeated transmissions of the second signal.

[0277] In some embodiments, the method for determining the number of repeated transmissions of the second signal includes at least one of the following: determining that the number of repeated transmissions of the second signal is the same as the number of repeated transmissions of the target downlink transmission corresponding to the first object; determining that the number of repeated transmissions of the second signal is a related function value of the number of repeated transmissions of the target downlink transmission corresponding to the first object; determining the number of repeated transmissions of the second signal based on the number of times the target downlink transmission is successfully received by the terminal itself.

[0278] In some embodiments, the second indication information is carried in at least one of the following: the first response; at least one of the target downlink transmissions; scheduling information for scheduling the target downlink transmission; scheduling information for scheduling retransmission of the second signal; SIB1.

[0279] In some embodiments, when the second indication information is carried in the first response, the second indication information is further used to indicate an association between the number of repeated transmissions of the second signal and the signal attribute.

[0280] In some embodiments, when the second signal is Msg3 and the second indication information is carried in the SIB1, the second indication information is also used to indicate that the number of repeated transmissions is effective for at least one of Msg1, Msg2, and Msg4.

[0281] In some embodiments, the indication granularity of the second indication information includes at least one of the following: indication with each terminal as the granularity; indication with each terminal group as the granularity, wherein the terminal group includes at least one terminal; indication with each signal attribute as the granularity; indication with each signal attribute group as the granularity, wherein the signal attribute group includes at least one signal attribute.

[0282] In some embodiments, the number of repeated transmissions of the second signal corresponding to different terminals is indicated by the same indication information or by different indication information.

[0283] In some embodiments, the first signal includes at least one of message Msg1 preamble, MsgA preamble, MsgA physical uplink shared channel PUSCH, PUSCH without random access RACH less, uplink activation signal, uplink wake-up signal, sounding reference signal SRS, Msg3 PUSCH, and Msg5 PUSCH.

[0284] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of method embodiments 200-600, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0285] 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 embodiments shown in Figures 3-5. 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 is applicable to this network-side device embodiment and can achieve the same technical effects.

[0286] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 11, the network-side device 1100 includes an antenna 1101, a radio frequency device 1102, a baseband device 1103, a processor 1104, and a memory 1105. Antenna 1101 is connected to radio frequency device 1102. In the uplink direction, radio frequency device 1102 receives information via antenna 1101 and sends the received information to baseband device 1103 for processing. In the downlink direction, baseband device 1103 processes the information to be transmitted and sends it to radio frequency device 1102. Radio frequency device 1102 processes the received information and then sends it through antenna 1101.

[0287] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 1103 , which includes a baseband processor.

[0288] The baseband device 1103 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 11, one of the chips is, for example, a baseband processor, which is connected to the memory 1105 through a bus interface to call the program in the memory 1105 and execute the network side device operations shown in the above method embodiment.

[0289] The network side device may further include a network interface 1106 , which is, for example, a Common Public Radio Interface (CPRI).

[0290] Specifically, the network side device 1100 of the embodiment of the present application also includes: instructions or programs stored in the memory 1105 and executable on the processor 1104. The processor 1104 calls the instructions or programs in the memory 1105 to execute the method of executing each module shown in FIG8 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0291] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned repeated transmission method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0292] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0293] 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 repeated transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0294] 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.

[0295] 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 repeated transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0296] An embodiment of the present application also provides a wireless communication system, including: a terminal and a network side device, wherein the terminal can be used to implement the various processes of the above-mentioned repeated transmission method embodiment 600, and the network side device can be used to implement the various processes of the above-mentioned repeated transmission method embodiments 300-500, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0297] 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.

[0298] 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-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0299] 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 method for repeated transmission, comprising: The terminal sends a first signal to the network side device; The terminal receives the target downlink transmission sent by the network side device based on the repeated transmission mode; The target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

2. The method according to claim 1, wherein The first object includes at least one of the following: a terminal that sends the first signal; the terminal group to which the terminal sending the first signal belongs; signal attributes of the first signal; The signal attribute group to which the signal attribute of the first signal belongs.

3. The method according to any one of claims 1 to 2, wherein The target downlink transmission carries a first response, including at least one of the following: Each of the repeated downlink transmissions of the target carries response information corresponding to the first object; At least some of the target downlink transmissions of the repeated transmissions carry response information corresponding to the first object; The target downlink transmission of different repeated transmissions carries response information corresponding to different first objects.

4. The method according to claim 3, wherein: The target downlink transmissions of different times of the repeated transmission carry response information corresponding to different first objects, including at least one of the following: Response information corresponding to different first objects is independently carried in different target downlink transmissions; The response information corresponding to different first objects is carried in each independently scheduled target downlink transmission.

5. The method according to any one of claims 1 to 4, wherein The target downlink transmission corresponding to at least some of the different first objects has a different number of repeated transmissions.

6. The method according to any one of claims 1 to 5, wherein The target downlink transmissions of different repeated transmissions use different beams corresponding to the terminals for transmission, or the target downlink transmissions located in different segments use different beams corresponding to the terminals, wherein each segment includes at least two target downlink transmissions transmitted continuously in the repeated transmission.

7. The method according to any one of claims 1 to 6, wherein The method further comprises: The terminal obtains first indication information; The first indication information is used to indicate the related information of the repeated transmission.

8. The method of claim 7, wherein: The repeatedly transmitted related information includes at least one of the following: the number of repeated transmissions of the target downlink transmission; repeated transmission resources of the target downlink transmission; the number of repeated transmissions of the target downlink transmission corresponding to different first objects; a transmission order or transmission resource of the target downlink transmission corresponding to different first objects in the repeated transmission; starting points of repeated transmissions of the target downlink transmissions corresponding to different first objects; an offset of repeated transmission of the target downlink transmission corresponding to different first objects; Whether the target downlink transmissions corresponding to different first objects are repeatedly transmitted.

9. The method of claim 8, wherein: The number of repeated transmissions of the target downlink transmission includes at least one of the following: The number of repeated transmissions of the target downlink transmission is the same as the number of terminals that simultaneously transmit the first signal; The number of repeated transmissions of the target downlink transmission is K times the number of terminals that simultaneously transmit the first signal, where K is an integer greater than or equal to 1; The number of repeated transmissions of the target downlink transmission is a function value related to the number of terminals that simultaneously send the first signal.

10. The method of claim 8, wherein: The transmission order or transmission resources of the target downlink transmissions corresponding to different first objects in the repeated transmission are determined by at least one of the following: a predefined mapping rule or relationship, wherein the predefined mapping rule or relationship includes a correspondence between the ID of each first object and a retransmission resource or a retransmission order; Configured by the network side device.

11. The method of claim 8, wherein: The starting point of the repeated transmission satisfies one of the following: The starting points of repeated transmissions of the target downlink transmissions corresponding to different first objects are the same; The starting points of at least part of the repeated transmissions in the target downlink transmissions corresponding to different first objects are different.

12. The method according to any one of claims 1 to 11, wherein The method further comprises: The terminal repeatedly transmits the second signal according to the transmission resources indicated in the first response.

13. The method of claim 12, wherein: Before the terminal repeatedly transmits the second signal according to the transmission resource indicated in the first response, the method further includes: The terminal determines the number of repeated transmissions of the second signal according to at least one of the following: A rule agreed upon in the protocol or predefined in the protocol, wherein the rule agreed upon in the protocol or predefined in the protocol includes the number of repeated transmissions of the second signal or a method for determining the number of repeated transmissions of the second signal; Second indication information, wherein the second indication information is used to indicate the number of repeated transmissions of the second signal or a method for determining the number of repeated transmissions of the second signal.

14. The method of claim 13, wherein: The method for determining the number of repeated transmissions of the second signal includes at least one of the following: Determining that the number of repeated transmissions of the second signal is the same as the number of repeated transmissions of the target downlink transmission corresponding to the first object; Determining that the number of repeated transmissions of the second signal is a correlation function value of the number of repeated transmissions of the target downlink transmission corresponding to the first object; The number of repeated transmissions of the second signal is determined based on the number of times the terminal successfully receives the target downlink transmission.

15. The method of claim 13, wherein: The second indication information is carried in at least one of the following: the first response; at least one of the target downlink transmissions; Scheduling information for scheduling the target downlink transmission; Scheduling information for scheduling retransmission of the second signal; SIB1.

16. The method of claim 15, wherein: In the case where the second indication information is carried in the first response, the second indication information is further used to indicate an association between the number of repeated transmissions of the second signal and a signal attribute.

17. The method of claim 15, wherein: In the case where the second signal is Msg3 and the second indication information is carried in the SIB1, the second indication information is further used to indicate that the number of repeated transmissions is effective for at least one of Msg1, Msg2, and Msg4.

18. A method for repeated transmission, comprising: The network side device receives a first signal sent by multiple terminals; The network side device sends a target downlink transmission to each of the terminals based on a repeated transmission mode; The target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

19. The method of claim 18, wherein: The first object includes at least one of the following: a terminal that sends the first signal; the terminal group to which the terminal sending the first signal belongs; signal attributes of the first signal; The signal attribute group to which the signal attribute of the first signal belongs.

20. The method according to any one of claims 18 to 19, wherein The target downlink transmission carries a first response including at least one of the following: Each of the repeated downlink transmissions of the target carries response information corresponding to the first object; At least some of the target downlink transmissions of the repeated transmissions carry response information corresponding to the first object; The target downlink transmission of different repeated transmissions carries response information corresponding to different first objects.

21. The method of claim 20, wherein: The target downlink transmissions of different times of the repeated transmission carry response information corresponding to different first objects, including at least one of the following: Response information corresponding to different first objects is independently carried in different target downlink transmissions; The response information corresponding to different first objects is carried in each independently scheduled target downlink transmission.

22. The method of any one of claims 18 to 20, wherein: The number of repeated transmissions of the target downlink transmission corresponding to different first objects is the same.

23. The method of any one of claims 18 to 22, wherein: The target downlink transmissions that are repeated for different times use beams corresponding to different terminals for transmission, or the target downlink transmissions located in different segments use beams corresponding to different terminals, wherein the target downlink transmissions in the same segment include at least two target downlink transmissions that are transmitted continuously.

24. The method of any one of claims 18 to 23, wherein The method further comprises: The network side device sends first indication information to the terminal; The first indication information is used to indicate the related information of the repeated transmission.

25. The method of claim 24, wherein: The repeatedly transmitted related information includes at least one of the following: the number of repeated transmissions of the target downlink transmission; repeated transmission resources of the target downlink transmission; the number of repeated transmissions of the target downlink transmission corresponding to different first objects; a transmission order or transmission resource of the target downlink transmission corresponding to different first objects in the repeated transmission; starting points of repeated transmissions of the target downlink transmissions corresponding to different first objects; an offset of repeated transmission of the target downlink transmission corresponding to different first objects; Whether the target downlink transmissions corresponding to different first objects are repeatedly transmitted.

26. The method of claim 24, wherein: The number of repeated transmissions of the target downlink transmission includes at least one of the following: The number of repeated transmissions of the target downlink transmission is the same as the number of the terminals that simultaneously send the first signal; The number of repeated transmissions of the target downlink transmission is K times the number of the terminals that simultaneously send the first signal, where K is an integer greater than or equal to 1; The number of repeated transmissions of the target downlink transmission is a function value related to the number of the terminals that simultaneously transmit the first signal.

27. The method of claim 25, wherein: The transmission order or transmission resources of the target downlink transmissions corresponding to different first objects in the repeated transmission are determined by at least one of the following: a predefined mapping rule or relationship, wherein the predefined mapping rule or relationship includes a correspondence between the ID of each first object and a retransmission resource or a retransmission order; Configured by the network side device.

28. The method of claim 24, wherein: The starting point of the repeated transmission satisfies one of the following: The starting points of repeated transmissions of the target downlink transmissions corresponding to different first objects are the same; The starting points of at least part of the repeated transmissions in the target downlink transmissions corresponding to different first objects are different.

29. The method of any one of claims 18 to 28, wherein The method further comprises: The network side device receives the second signal repeatedly sent by the terminal; The transmission resource of the second signal is determined based on the first response.

30. The method of claim 29, wherein: The method further comprises: Sending second indication information to the terminal; The second indication information is used to indicate the number of repeated transmissions of the second signal or a method for determining the number of repeated transmissions of the second signal.

31. The method of claim 30, wherein: The method for determining the number of repeated transmissions of the second signal includes at least one of the following: Determining that the number of repeated transmissions of the second signal is the same as the number of repeated transmissions of the target downlink transmission; determining that the number of repeated transmissions of the second signal is a correlation function of the number of repeated transmissions of the target downlink transmission; The number of repeated transmissions of the second signal is determined based on the number of times the terminal successfully receives the target downlink transmission.

32. The method of claim 30, wherein: The second indication information is carried in at least one of the following: the first response; at least one of the target downlink transmissions; Scheduling information for scheduling the target downlink transmission; Scheduling information for scheduling retransmission of the second signal; SIB1.

33. The method of claim 32, wherein: In the case where the second indication information is carried in the first response, the second indication information is further used to indicate an association between the number of repeated transmissions of the second signal and the signal attribute.

34. The method of claim 32, wherein: In the case where the second signal is Msg3 and the second indication information is carried in the SIB1, the second indication information is further used to indicate that the number of repeated transmissions is effective for at least one of Msg1, Msg2, and Msg4.

35. A device for repeated transmission, comprising: A sending module, configured to send a first signal to a network-side device; A receiving module, configured to receive a target downlink transmission sent by the network side device based on a repeated transmission mode; The target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

36. A device for repeated transmission, comprising: A receiving module, configured to receive first signals sent by multiple terminals; A sending module, configured to send a target downlink transmission to each terminal based on a repeated transmission mode; The target downlink transmission carries a first response, and the first response includes response information corresponding to at least one first object, and the first object is related to the first signal.

37. A terminal comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method according to any one of claims 1 to 17 are implemented.

38. A network side device, comprising a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the steps of the method according to any one of claims 18 to 34 are implemented.

39. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the method according to any one of claims 1 to 17, or implements the steps of the method according to any one of claims 18 to 34.

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