Common pdcch receiving method, sending method, apparatus, and device

Abstract

The present application relates to the technical field of communications, and discloses a common PDCCH receiving method, a sending method, an apparatus, and a device. The common PDCCH receiving method in embodiments of the present application comprises: a terminal determines a transmission resource or a transmission characteristic of a common PDCCH repetition transmission; and the terminal receives the common PDCCH repetition transmission on the basis of the transmission resource or the transmission characteristic. The common PDCCH comprises at least one of the following: an SIB1 PDCCH, another system message OSI PDCCH, a message 2 PDCCH, a message 4 PDCCH, a message B PDCCH, a paging PDCCH, and a PDCCH for scheduling retransmission of message 3.

Description

Public PDCCH receiving method, sending method, device and equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202310882187.1 filed on July 18, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a common physical downlink control channel (PDCCH) receiving method, sending method, device and equipment. Background Art

[0004] In terrestrial network scenarios, since the base station transmission power is much greater than the terminal transmission power, the link quality of the downlink channel is usually higher than the link quality of the uplink channel. However, in some application scenarios, for example, in non-terrestrial communication networks, such as satellite communications, the downlink transmission power depends on the number of beams supported simultaneously by the satellite. As the number of beams increases, the transmission power corresponding to each beam will decrease. For example, in high-frequency conditions, the base station transmission power will be close to the mobile phone transmission power. At this time, the quality of the downlink channel is not necessarily higher than that of the uplink channel. In addition, the terminal (User Equipment, UE) uses the common physical downlink control channel (Common Physical downlink control channel, Common PDCCH) to send scheduling information for some public messages before the Radio Resource Control (RRC) connection is established. If the reception performance of the Common PDCCH is affected by the downlink channel quality, the public messages scheduled by the Common PDCCH will not be received, and the network coverage performance will be affected.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a common PDCCH receiving method, sending method, apparatus and device, which can solve the problem of poor network coverage caused by poor downlink channel quality.

[0007] In a first aspect, a method for receiving a common PDCCH is provided, comprising:

[0008] The terminal determines the transmission resources or transmission characteristics for repeated transmission of the common PDCCH;

[0009] The terminal receives the repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic;

[0010] The public PDCCH includes at least one of the following:

[0011] System information block SIB1 PDCCH, other system messages OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, PDCCH for scheduling message 3 retransmission.

[0012] In a second aspect, a method for transmitting a common PDCCH is provided, including:

[0013] The network side device determines the transmission resources or transmission characteristics of the common PDCCH repeated transmission;

[0014] The network side device performs repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic;

[0015] The public PDCCH includes at least one of the following:

[0016] System Information Block (SIB) 1 PDCCH, Other System Information (OSI) PDCCH, Message 2 PDCCH, Message 4 PDCCH, Message B PDCCH, Paging PDCCH, and PDCCH for scheduling retransmission of Message 3.

[0017] In a third aspect, a common PDCCH receiving apparatus is provided, including:

[0018] A determination module, configured to determine transmission resources or transmission characteristics for repeated transmission of a common PDCCH;

[0019] A receiving module, configured to receive the repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic;

[0020] The public PDCCH includes at least one of the following:

[0021] System information block SIB1 PDCCH, other system messages OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, PDCCH for scheduling message 3 retransmission.

[0022] In a fourth aspect, a common PDCCH transmitting apparatus is provided, including:

[0023] A determination module, configured to determine transmission resources or transmission characteristics for repeated transmission of a common PDCCH;

[0024] An execution module, configured to execute repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic;

[0025] The public PDCCH includes at least one of the following:

[0026] System information block SIB1 PDCCH, other system messages OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, PDCCH for scheduling message 3 retransmission.

[0027] In a fifth aspect, a terminal is provided, which includes 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 public PDCCCH reception method provided in the embodiment of the present application are implemented.

[0028] In the sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is used to determine the transmission resources or transmission characteristics of the repeated transmission of a common PDCCH, and the communication interface is used to receive the repeated transmission of the common PDCCH based on the transmission resources or the transmission characteristics; wherein the common PDCCH includes at least one of the following: system information block SIB1 PDCCH, other system message OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, and PDCCH for scheduling message 3 retransmission.

[0029] In the seventh aspect, a network side device is provided, which includes 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 common PDCCH sending method provided in the embodiment of the present application are implemented.

[0030] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the processor is used to determine the transmission resources or transmission characteristics of the repeated transmission of the common PDCCH, and the communication interface is used to perform the repeated transmission of the common PDCCH based on the transmission resources or the transmission characteristics; wherein the common PDCCH includes at least one of the following: system information block SIB1 PDCCH, other system message OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, and PDCCH for scheduling message 3 retransmission.

[0031] 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 public PDCCH receiving method provided in the embodiment of the present application are implemented, or the steps of the public PDCCH sending method provided in the embodiment of the present application are implemented.

[0032] In the tenth aspect, a wireless communication system is provided, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the public PDCCH receiving method provided in the embodiment of the present application, and the network side device can be used to execute the steps of the public PDCCH sending method provided in the embodiment of the present application.

[0033] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run a program or instruction to implement the public PDCCH receiving method provided in the embodiment of the present application, or to implement the public PDCCH sending method provided in the embodiment of the present application.

[0034] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the public PDCCH receiving method provided in the embodiment of the present application, or the program / program product is executed by at least one processor to implement the steps of the public PDCCH sending method provided in the embodiment of the present application.

[0035] In this embodiment of the present application, a terminal determines a transmission resource or transmission characteristic for repeated transmission of a common PDCCH; the terminal receives the repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic; wherein the common PDCCH includes at least one of the following: SIB1 PDCCH, OSI PDCCH, Message 2 PDCCH, Message 4 PDCCH, Message B PDCCH, Paging PDCCH, and PDCCH for scheduling retransmission of Message 3. This enables the terminal to perform repeated transmission of the common PDCCH, thereby improving network coverage performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is a block diagram of a wireless communication system applicable to embodiments of the present application;

[0037] FIG2 is a flowchart of a method for receiving a common PDCCH provided in an embodiment of the present application;

[0038] FIG3 is a flowchart of a method for transmitting a common PDCCH provided in an embodiment of the present application;

[0039] FIG4 is a structural diagram of a common PDCCH receiving apparatus provided in an embodiment of the present application;

[0040] FIG5 is a structural diagram of a common PDCCH transmitting apparatus provided in an embodiment of the present application;

[0041] FIG6 is a structural diagram of a communication device provided in an embodiment of the present application;

[0042] FIG7 is a structural diagram of a terminal provided in an embodiment of the present application;

[0043] FIG8 is a structural diagram of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] 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.

[0045] 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 the number of objects is not limited. 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.

[0046] 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.

[0047] 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.

[0048] 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 device (a home appliance with wireless communication capabilities, such as a refrigerator, a television, a washing machine, or furniture), a game console, a personal computer (PC), a teller machine, or a self-service machine, or other terminal-side device. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. 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.

[0049] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0050] In some embodiments, the random access procedure may be a contention-based random access procedure or a non-contention-based random access procedure. The random access procedure may be a four-step random access procedure (also called a Type-1 random access procedure) or a two-step random access procedure (also called a Type-2 random access procedure).

[0051] In the contention-based four-step random access channel (RACH) process, the terminal first sends Message 1 (Msg1) to the network, containing a preamble. After the network detects the preamble, it sends Message 2 (Msg2) / Random Access Response (RAR), which contains the preamble number detected by the network and the uplink radio resources allocated to the terminal for sending Message 3 (Msg3). After receiving Msg2, the terminal confirms that at least one of the preamble numbers carried in Msg2 matches the number of the preamble it sent. Then, based on the resources indicated by the RAR, it sends Msg3 containing contention resolution information. After receiving Msg3, the network sends Message 4 (Msg4) containing contention resolution information. Upon receiving Msg4, the terminal confirms that the resolution information matches the contention resolution information it sent in Msg3, completing the four-step random access process.

[0052] The network includes uplink grant (UL grant) information in the RAR to indicate the scheduling information of the Msg3 physical uplink shared channel (PUSCH), and includes information such as the random access preamble ID (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 physical downlink control channel (PDCCH) scrambled by the TC-RNTI.

[0053] For the contention-based random access process, different terminals randomly select preambles for transmission. In this way, different terminals may select the same preamble to send on the same time-frequency radio resources (such as random access opportunity (RACH Occasion, RO) resources). This situation can be understood as a terminal preamble conflict. In this case, different terminals will receive the same RAR. At this time, different terminals will transmit Msg3 PUSCH according to the scheduling information in the RAR UL grant. In some related technologies, because repeated transmission of Msg3 PUSCH is not supported, the network can only decode the PUSCH (including contention resolution information) sent by one terminal on one Msg3 PUSCH scheduling resource. Therefore, the network will include the contention resolution information received in Msg3 in Msg4. If the contention resolution information in Msg4 received by the terminal matches the contention resolution information sent by the terminal in Msg3 PUSCH, the terminal considers that the contention resolution is successful. If they do not match, the contention resolution is considered unsuccessful.

[0054] If the contention resolution is unsuccessful, the terminal reselects RACH transmission resources, performs physical random access channel (PRACH) transmission, and makes the next random access attempt.

[0055] In some embodiments, the first step in the two-step random access process (2-step RACH) is that the terminal sends message A (MsgA) to the network side. After receiving MsgA, the network side sends message B (MsgB) to the terminal. If the terminal does not receive MsgB within a certain period of time, the terminal will increment the counter that counts the number of times MsgA is sent and resend MsgA. If the counter that counts the number of times MsgA is sent reaches a certain threshold, the terminal will switch from the two-step random access process to the four-step random access process. MsgA includes the MsgA preamble part and the MsgA PUSCH part. The preamble part is sent on the RO used for the two-step random access process, and the PUSCH part is sent on the MsgA PUSCH resources associated with the sending of the MsgA preamble and the RO. MsgA PUSCH resources are a set of PUSCH resources configured relative to each PRACH slot, including time-frequency resources and DMRS resources.

[0056] In some embodiments, a CORESET is a collection of time and frequency domain resources for control information. CORESET#0 is a special CORESET that is typically used to schedule the transmission of the PDCCH of System Information Block (SIB) 1. The configuration information of CORESET#0 and the configuration information of the monitoring opportunity of the Type0-PDCCH Common Search Space (CSS) are carried by the associated Cell Defining Synchronization Signal Block (CD-SSB). The main function of CORESET#0 is to define the time and frequency resources of the Type0-PDCCH CSS and the size of the monitoring opportunity of the Type0-PDCCH CSS.

[0057] In some embodiments, CORESET#0 and Synchronization Signal Block (SSB) have the following multiplexing mode:

[0058] Multiplexing Mode 1: This is a multiplexing mode in which SSB and CORESET#0 appear at different times (no overlap in the time domain), and the SSB transmission bandwidth overlaps with the initially activated downlink bandwidth part (Bandwidth Part, BWP) of CORESET#0 (overlap in the frequency domain). This mode can be used for carrier frequencies less than 6 GHz and greater than 6 GHz (and less than 52.6 GHz).

[0059] Multiplexing Mode 2: Multiplexing mode in which SSB and CORESET#0 appear at different times (no overlap in time domain), and the transmission bandwidth of SSB does not overlap with the initial activation downlink BWP of CORESET#0 (no overlap in frequency domain); SSB is located at the top or bottom of CORESET#0. This is only used when the carrier frequency is greater than 6 GHz. SSB is located at the top of CORESET#0, with an interval of 12+k SSB subcarriers. SSB is located at the bottom of CORESET#0. If k SSB Equal to 0, interval 12 subcarriers; if k SSB Not equal to 0, interval 24-k SSB subcarriers.

[0060] Multiplexing mode 3: The multiplexing mode in which SSB and CORESET#0 appear at the same time (overlap in the time domain), and the transmission bandwidth of SSB does not overlap with the initial activation downlink BWP of CORESET#0 (no overlap in the frequency domain); SSB is located at the top or bottom of CORESET#0. It is only used when the carrier frequency is greater than 6 GHz. SSB is located at the top of CORESET#0, with an interval of k SSB subcarriers. SSB is located at the bottom of CORESET#0. If k SSB Equal to 0, interval 0 subcarrier; if k SSB Not equal to 0, interval 12-k SSB subcarriers.

[0061] In some embodiments, there are two types of search space (SS) sets: a common search space (CSS) set monitored by a group of terminals in a cell, and a user-specific search space (USS) set monitored by a single terminal. The SS set further configures the PDCCH candidates that the terminal needs to monitor. Search spaces can be of the following types:

[0062] 1. Type 0 - PDCCH common search space set (CSS set): This search space set is used to monitor SIB1 system messages;

[0063] 2. Type 0A-PDCCH CSS set: This search space set is used to monitor system messages other than SIB1;

[0064] 3. Type 1 - PDCCH CSS set: This search space set is used to monitor: the downlink PDCCH corresponding to Msg2 / Msg4 in the traditional four-step random access process; and the downlink PDCCH corresponding to MsgB in the two-step random access process;

[0065] 4. Type 2 - PDCCH CSS set: This search space set is used to monitor paging messages;

[0066] 5. Type 3 - PDCCH CSS set: This search space set is used to monitor uplink power control PDCCH, downlink pre-emption PDCCH, slot format indication PDCCH, and PDCCH related to downlink data transmission;

[0067] 6. USS: This search space set is used to monitor PDCCH related to downlink data transmission.

[0068] In some embodiments, during the random access process, the reception of the scheduling information of the Msg2 / MsgB / Msg4 physical downlink shared channel (PDSCH) needs to be within a certain window, and the size of the window is configured by the network.

[0069] For Msg2, the window starts at the first symbol of the Control Resource Set (CORESET) in the Type 1 PDCCH Common Search Space Set (Type1-PDCCH CSS set) after the PRACH is transmitted. For MsgB, the window starts at the first symbol of the CORESET in the Type 1-PDCCH CSS set after the PUSCH (PUSCH part of MsgA) is transmitted.

[0070] For Msg4, the window is actually controlled by the random access contention resolution timer (ra-ContentionResolutionTimer), which starts or restarts after sending Msg3 (if Msg3 repeated transmission is supported, it is after sending the last transmission of Msg3).

[0071] In the following, in combination with the accompanying drawings, a common PDCCH receiving method, sending method, apparatus and device provided by the embodiments of the present application are described in detail through some embodiments and their application scenarios.

[0072] Please refer to FIG. 2 , which is a flowchart of a method for receiving a common PDCCH provided in an embodiment of the present application. As shown in FIG. 2 , the method includes the following steps:

[0073] Step 201: The terminal determines the transmission resources or transmission characteristics for repeated transmission of a common PDCCH.

[0074] The public PDCCH includes at least one of the following:

[0075] System Information Block (SIB) 1 physical downlink control channel (PDCCH), other system information (OSI) PDCCH, message 2 (Msg2) PDCCH, message 4 (Msg4) PDCCH, message B (MsgB) PDCCH, paging PDCCH, and PDCCH for scheduling retransmission of message 3 (Msg3).

[0076] Among them, SIB1 PDCCH refers to the PDCCH scheduling SIB1, OSI PDCCH refers to the PDCCH scheduling OSI, Msg2 PDCCH refers to the PDCCH scheduling Msg2, Msg4 PDCCH refers to the PDCCH scheduling Msg4, MsgB PDCCH refers to the PDCCH scheduling MsgB, and paging PDCCH refers to the PDCCH scheduling paging or used for paging.

[0077] The common PDCCH may refer to one or more PDCCHs transmitted on a common PDCCH resource. The common PDCCH resource may refer to a CORESET resource supporting CSS, which may be CORESET#0 or another CORESET. The CSS may include at least one of the following:

[0078] Type0 CSS collection, Type0A CSS collection, Type1 CSS collection, Type2 CSS collection.

[0079] For example, the common PDCCH may be a PDCCH transmitted on CORESET#0, or may be a PDCCH transmitted on CORESET resources associated with a Type0 / 0A / 1 / 2 PDCCH CSS set.

[0080] In addition, the common PDCCH transmitted on the CORESET resources associated with the CSS is also called a broadcast PDCCH.

[0081] In addition, the above-mentioned common PDCCH may be a common PDCCH in a non-terrestrial network (NTN) scenario, or may be a common PDCCH in a terrestrial network (TN) scenario.

[0082] In some implementations, the common PDCCH may also be a PDCCH channel before the terminal enters the RRC connected state.

[0083] In the embodiment of the present application, the common PDCCH repeated transmission may also be referred to as common PDCCH repetition (common PDCCH repetition), or each transmission in the common PDCCH repeated transmission is referred to as a PDCCH repetition (PDCCH repetition).

[0084] The transmission resources for the repeated transmission of the common PDCCH may be time domain resources, frequency domain resources or spatial domain resources occupied by the repeated transmission of the common PDCCH.

[0085] The transmission characteristics of the PDCCH repetition transmission may be transmission parameters used by the network side device to perform the common PDCCH repetition transmission, or transmission parameters used during the common PDCCH repetition transmission.

[0086] Step 202: The terminal receives the repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic.

[0087] The terminal receiving the repeated common PDCCH transmission based on the transmission resource or the transmission characteristic may receive the repeated common PDCCH transmission on the transmission resource or receive the repeated common PDCCH transmission with the transmission characteristic.

[0088] In the embodiment of the present application, the above steps enable the terminal to perform repeated transmission of the common PDCCH, thereby improving the coverage performance of the network. Moreover, since the common PDCCH includes the SIB1 PDCCH, OSI PDCCH, Message 2 PDCCH, Message 4 PDCCH, Message B PDCCH, Paging PDCCH, and PDCCH for scheduling retransmission of Message 3, this also enables the terminal to better receive messages during the random access process, thereby improving the random access performance of the terminal.

[0089] As an optional implementation manner, the transmission resource includes at least one of the following:

[0090] Time slot, monitoring opportunity.

[0091] The time slot may be a time slot corresponding to each transmission of the common PDCCH, and the monitoring opportunity may be a monitoring opportunity corresponding to each transmission of the common PDCCH.

[0092] In some embodiments, the time slot includes at least one of the following:

[0093] Physical slot, available slot.

[0094] The physical time slots for repeated transmission of the common PDCCH may be continuous or non-contiguous physical time slots, i.e., the physical time slots include: continuous physical time slots or non-contiguous physical time slots, wherein the time-frequency resource positions of repeated transmission of the common PDCCH in continuous physical time slots may be the same or different. The available time slots for repeated transmission of the common PDCCH may be continuous or non-contiguous available time slots.

[0095] In some implementations, the monitoring opportunity includes at least one of the following:

[0096] Physical PDCCH monitoring occasion, available PDCCH monitoring occasion.

[0097] The physical PDCCH monitoring opportunities for the above-mentioned repeated transmission of the public PDCCH may be continuous or non-continuous physical PDCCH monitoring opportunities, that is, the above-mentioned physical PDCCH monitoring opportunities include: continuous physical PDCCH monitoring opportunities or non-continuous physical PDCCH monitoring opportunities, wherein the time-frequency domain resource positions of the repeated transmission of the public PDCCH within the continuous physical PDCCH monitoring opportunities may be the same or different. The available PDCCH monitoring opportunities for the above-mentioned repeated transmission of the public PDCCH may be continuous or non-continuous available PDCCH monitoring opportunities.

[0098] The available PDCCH monitoring opportunities mentioned above may also be referred to as available PDCCH monitoring opportunities.

[0099] In the above implementation, the time slots or monitoring opportunities for repeated transmission of the common PDCCH may be determined, so that the terminal monitors the common PDCCH based on these time slots or monitoring opportunities, thereby improving the reliability of receiving the common PDCCH.

[0100] Optionally, the continuous physical time slots belong to the same search space, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located; or, the continuous physical time slots belong to multiple search spaces, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located;

[0101] or,

[0102] The consecutive physical PDCCH monitoring opportunities belong to the same search space; or, the consecutive physical PDCCH monitoring opportunities belong to different search spaces.

[0103] The above-mentioned continuous physical time slots belong to the same search space, which can be understood as the terminal monitoring the common PDCCH in continuous physical time slots and at the PDCCH monitoring opportunity of the same search space. This can achieve continuous physical time slot monitoring of the common PDCCH in the same search space, thereby saving the power consumption overhead of the terminal.

[0104] The above-mentioned continuous physical time slots belonging to multiple search spaces can be understood as the terminal monitoring the common PDCCH on continuous physical time slots and at PDCCH monitoring opportunities in different search spaces. This makes the repeated transmission of the common PDCCH more flexible, so that the terminal can more easily monitor the common PDCCH.

[0105] The above-mentioned consecutive physical PDCCH monitoring opportunities belong to the same search space, so that the terminal can monitor the common PDCCH at the consecutive physical PDCCH monitoring opportunities in the same search space, thereby saving power consumption of the terminal.

[0106] The above-mentioned consecutive physical PDCCH monitoring opportunities belong to different search spaces, which can make the common PDCCH repetitive transmission more flexible, so that the terminal can monitor the common PDCCH more easily.

[0107] Optionally, the available time slot satisfies at least one of the following:

[0108] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the SSB is located;

[0109] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where a physical random access channel (PRACH) is located;

[0110] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical uplink shared channel PUSCH of message A is located;

[0111] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to other search spaces, and the other search spaces are different from the search space corresponding to the common PDCCH repeated transmission;

[0112] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to another control resource set CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission;

[0113] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where other common PDCCHs are located;

[0114] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a downlink symbol;

[0115] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a flexible symbol

[0116] The available time slot meeting the at least one determination may be determining the available time slot meeting the at least one determination as the available time slot for repeated transmission of the common PDCCH, or may be determining the symbol for repeated transmission of the common PDCCH in the available time slot based on the at least one determination.

[0117] The available time slot satisfying at least one of the above items may also be referred to as repeated transmission of the common PDCCH satisfying at least one of the above items in the available time slot.

[0118] At least one of the above items may be indicated by the network side or agreed upon in the protocol.

[0119] In this implementation, since the available time slots satisfy at least one of the above items, transmission conflicts can be reduced, and the reliability of the terminal receiving the common PDCCH can be further improved.

[0120] Optionally, the available PDCCH monitoring opportunity satisfies at least one of the following:

[0121] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the SSB is located;

[0122] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the PRACH is located;

[0123] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the message A PUSCH is located;

[0124] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other search spaces, and the other search spaces are different from the search spaces corresponding to the common PDCCH repeated transmissions;

[0125] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other control resource sets CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission;

[0126] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols where other common PDCCHs are located;

[0127] The symbol corresponding to the available PDCCH monitoring opportunity is a downlink symbol;

[0128] The symbols corresponding to the available PDCCH monitoring opportunities are flexible symbols.

[0129] The above-mentioned available PDCCH monitoring timing may be determined by at least one of the above-mentioned conditions as an available PDCCH monitoring timing that meets the above-mentioned conditions as an available PDCCH monitoring timing for repeated transmission of the common PDCCH, or may be determined based on at least one of the above-mentioned conditions as a symbol for repeated transmission of the common PDCCH in the available PDCCH monitoring timing.

[0130] The available time slot satisfying at least one of the above conditions may also be referred to as the common PDCCH repeated transmission satisfying at least one of the above conditions in the available PDCCH monitoring opportunity.

[0131] At least one of the above conditions may be indicated by the network side or agreed upon in the protocol.

[0132] In this implementation, since the available PDCCH monitoring opportunities meet at least one of the above conditions, transmission conflicts can be reduced, and the reliability of the terminal receiving the common PDCCH can be further improved.

[0133] Optionally, in a case where the common PDCCH repeated transmission is repeated transmission between time slots, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following:

[0134] The number of the physical time slots and the number of the available time slots;

[0135] or,

[0136] In the case where the common PDCCH repeated transmission is an inter-opportunity repeated transmission, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following:

[0137] The number of physical PDCCH monitoring opportunities and the number of available PDCCH monitoring opportunities.

[0138] The count of the number of repetitions of the above-mentioned public PDCCH repeated transmission includes the number of physical time slots, which may be that the physical time slots of the public PDCCH repeated transmission are all counted in the count of the configured number of repetitions; the count of the number of repetitions of the above-mentioned public PDCCH repeated transmission includes the number of available time slots, which may be that the available time slots of the public PDCCH repeated transmission are all counted in the count of the configured number of repetitions.

[0139] The count of the number of repetitions of the above-mentioned public PDCCH repeated transmission includes the number of physical PDCCH monitoring opportunities, which can be the physical PDCCH monitoring opportunities of the public PDCCH repeated transmission, all of which are counted in the count of the configured number of repetitions; the count of the number of repetitions of the above-mentioned public PDCCH repeated transmission includes the number of available PDCCH monitoring opportunities, which can be the available PDCCH monitoring opportunities of the public PDCCH repeated transmission, all of which are counted in the count of the configured number of repetitions.

[0140] In this implementation, repetition counting can be performed based on the number of physical time slots, the number of available time slots, the number of physical PDCCH monitoring opportunities, and the number of available PDCCH monitoring opportunities, thereby improving the accuracy of the repetition counting and avoiding terminal mismonitoring.

[0141] Optionally, also include:

[0142] In a case where the transmission resource includes a conflicting time slot in which repeated transmission of the common PDCCH conflicts with other channels, performing the first process or the second process on the conflicting time slot;

[0143] The first processing includes: discarding reception of the common PDCCH repeated transmission in the contention time slot;

[0144] The second processing includes discarding reception of the other channels in the conflict time slot.

[0145] The above-mentioned conflicting time slot is a time slot in which repeated transmission of the common PDCCH conflicts with other channels, and the conflict may be a complete or partial resource overlap.

[0146] The adoption of the first processing or the second processing may be determined based on network side configuration or protocol agreement, or based on channel type.

[0147] Optionally, performing the first processing or the second processing on the conflicting time slot includes:

[0148] In a first case, the first process is performed on the conflicting time slot, where the first case includes at least one of the following:

[0149] The common PDCCH includes a system information block SIB1 PDCCH, and the other channels include SSBs;

[0150] The common PDCCH includes a message 2 PDCCH, and the other channels include at least one of the following: an SSB, a SIB1 PDCCH, a SIB1 PDSCH, a PRACH, a message A PRACH, and a message A PUSCH;

[0151] The common PDCCH includes a message 4 PDCCH or a message B PDCCH, and the other channels include at least one of the following: an SSB, a SIB1 PDCCH, a SIB1 PDSCH, a PRACH, a message A PRACH, a message A PUSCH, a message 2 PDCCH, a message 2 PDSCH, a message 3, and a PDCCH for scheduling retransmission of message 3;

[0152] The common PDCCH includes a PDCCH for scheduling retransmission of message 3, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3;

[0153] The common PDCCH includes a paging PDCCH, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3, PDCCH for scheduling message 3 retransmission, message 4 PDCCH, message 4 PDSCH, and physical uplink shared channel PUCCH for feedback message 4 hybrid automatic repeat request HARQ,

[0154] For another example, in a second case, the second process is performed on the conflicting time slot, and the second case includes at least one of the following:

[0155] The public PDCCH includes SIB1 PDCCH, and the other channels include at least one of the following: other PDCCH, non-SIB1 PDSCH, PRACH, and public PUSCH;

[0156] The common PDCCH includes at least one of a message 2 PDCCH, a message 4 PDCCH, and a message B PDCCH, and the other channels include at least one of the following:

[0157] Other PDCCHs except SIB1 PDCCH;

[0158] Other PDSCHs except SIB1 PDSCH;

[0159] Public PUSCH;

[0160] Dedicated PUCCH.

[0161] In the above implementation, the first processing and the second processing can reduce conflicts, thereby improving the reception reliability of the downlink channel.

[0162] Optionally, the performing of the first processing or the second processing on the conflicting time slot includes:

[0163] According to any of the following rules, the first process or the second process is performed on the conflicting time slot:

[0164] Prioritizing the first transmission of the repeated transmission of the common PDCCH;

[0165] Prioritize transmission of high-priority channels;

[0166] In the case of the same priority, the channel with the earlier generation time is given priority.

[0167] Among them, the priority of the channel can be agreed upon by the protocol or configured on the network side, for example: the priority order is: the first transmission of the common PDCCH repeated transmission > transmission other than the first transmission of the common PDCCH repeated transmission > other PDCCH > PDSCH.

[0168] In this implementation, priority may be given to channels that are transmitted for the first time, have a high priority, or are generated earlier, so as to improve the receiving performance of the terminal downlink channel.

[0169] As an optional implementation manner, the transmission resource includes a transmission resource indicated by at least one of the following:

[0170] Transmission resources indicated by system information;

[0171] The transmission resources indicated by SSB;

[0172] The transmission resources indicated by the PDCCH resource configuration table;

[0173] The transmission resources indicated by CORESET;

[0174] The transmission resources indicated by the search space;

[0175] Transmission resources indicated by PDCCH monitoring opportunity;

[0176] The transmission resource indicated by the PRACH resource;

[0177] The transmission resource indicated by the PRACH format;

[0178] The repetition count type indicates the transmission resource.

[0179] The above system information includes a Master Indication Block (MIB) or a SIB.

[0180] The above indication includes an explicit indication or an implicit indication, for example, a CORESET, a search space, a PDCCH monitoring timing, a PRACH resource, or a PRACH format has an association relationship with the above transmission resource, thereby determining the transmission resource indicated by the CORESET, the search space, the PDCCH monitoring timing, the PRACH resource, or the PRACH format based on the association relationship. The above association relationship may be a protocol agreement or a network side configuration.

[0181] The above-mentioned repetition count type may include a physical time slot-based count type or an available time slot-based count type. In addition, the above-mentioned repetition count type may be a network-side configuration, a protocol agreement, or a default, for example: the counting type is the default physical time slot / physical opportunity-based count of repetitions; or the counting type is the default available time slot / available opportunity-based count of repetitions. For another example: the terminal receives indication information sent by the network-side device, the indication information is used to instruct the terminal to use a counting type when receiving a common PDCCH retransmission, and the counting type includes counting the repetitions based on the physical time slot or the available time slot.

[0182] The transmission resource indicated by the above-mentioned repetition counting type may be the resource corresponding to the repetition counting type as the above-mentioned transmission resource, for example: the repetition counting type is to count the number of repetitions based on the physical time slot, then the transmission time slot of the common PDCCH is the consecutive N time slots starting from the starting position of the time domain resource of the common PDCCH repeated transmission, N is a positive integer, in addition, if the common PDCCH repeated transmission is an inter-time slot repeated transmission, then N is equal to the repetition number K, K is a positive integer, if the common PDCCH repeated transmission is an intra-time slot repeated transmission, then N is equal to the number of time slots occupied by the time domain resource of the common PDCCH repeated transmission.

[0183] In this implementation, it is possible to determine transmission resources based on a variety of information, and it is also possible to avoid introducing additional signaling, thereby saving transmission overhead.

[0184] As an optional implementation manner, the transmission resource meets one of the following conditions:

[0185] The time slot in which the first transmission of the repeated transmission of the common PDCCH occurs is an available time slot;

[0186] The time slot where the transmission opportunity of the first transmission of the repeated transmission of the common PDCCH is located is an available time slot;

[0187] The time slot where the common PDCCH is repeatedly transmitted is an available time slot;

[0188] The transmission opportunity of the repeated transmission of the common PDCCH is an available transmission opportunity;

[0189] The time slot where the common PDCCH is repeatedly transmitted is a physical time slot;

[0190] The transmission timing of the repeated transmission of the common PDCCH is a physical transmission timing;

[0191] The resources where the public PDCCH is repeatedly transmitted are associated with the SSB.

[0192] The resource where the common PDCCH is repeatedly transmitted is associated with the SSB and includes at least one of the following:

[0193] The time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB;

[0194] The transmission slot in which the common PDCCH is repeatedly transmitted is associated with the SSB.

[0195] In this implementation, the above-mentioned limitation of transmission resources can make repeated transmission of the common PDCCH more reliable.

[0196] In some implementations, the time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB, including at least one of the following:

[0197] In a case where each transmission of the repeated common PDCCH transmission is quasi co-located (QCL) with the same SSB, resources of each transmission of the repeated common PDCCH transmission are associated with a transmission time of the SSB of the same beam;

[0198] In the case where each transmission of the common PDCCH repetition transmission is QCL with different SSBs, resources of each transmission of the common PDCCH repetition transmission are associated with transmission times of the SSBs of different beams.

[0199] The resources of each transmission of the above-mentioned common PDCCH repeated transmission are associated with the transmission time of the SSB of the same beam. The time slot or transmission timing of each transmission of the common PDCCH repeated transmission can be determined based on the transmission time of the SSB of the same beam. For example: the Common PDCCH repeated transmission is associated with the SSB transmission of beam #1, then the resources of each transmission of the common PDCCH can be obtained through the SSB of beam #1, for example, there is a fixed offset.

[0200] The above-mentioned association between the resources of each transmission of the repeated transmission of the common PDCCH and the transmission time of the SSB of different beams can be achieved by determining the resources of each transmission of the repeated transmission of the common PDCCH through the transmission time of the SSB of different beams. For example, the time slot or transmission timing of each transmission of the Common PDCCH is determined relative to the transmission time of the SSB of beam #1, the SSB of beam #2, the SSB of beam #3..., respectively, as if there is a one-to-one correspondence.

[0201] In this implementation, the resources for each transmission of the common PDCCH can be determined through the associated SSB, thereby saving configuration overhead.

[0202] As an optional implementation manner, the transmission characteristic includes at least one of the following:

[0203] Average power, average delay, delay spread, Doppler shift, Doppler spread, spatial Rx parameter, beamforming.

[0204] In some embodiments, the above-mentioned average power, average delay, delay spread, Doppler frequency shift, Doppler spread, spatial reception parameter (spatial Rx parameter), and beam may include: average power, average delay, delay spread, Doppler frequency shift, Doppler spread, spatial reception parameter (spatial Rx parameter), and beam corresponding to each transmission in the common PDCCH repeated transmission.

[0205] The above average power may be the average power of multiple repeated transmissions of the public PDCCH, or the average power of each transmission; the above average delay may be the average delay of multiple repeated transmissions of the public PDCCH, or the average delay of each transmission.

[0206] In the embodiment of the present application, the terminal receiving the common PDCCH based on the transmission characteristics may be receiving the common PDCCH based on a protocol-defined manner of receiving the PDCCH based on the transmission performance.

[0207] In the above embodiment, at least one of the above average power, average delay, delay spread, Doppler frequency shift, Doppler spread, spatial reception parameter, and beam can be indicated by the network side or determined based on protocol agreement.

[0208] In addition, in some implementations, when receiving a common PDCCH, the terminal may use part of the above-mentioned at least one characteristic for reception, or may ignore part of the transmission characteristics, that is, receive the common PDCCH based on the above-mentioned part of the transmission characteristics.

[0209] In this implementation, it is possible to receive the public PDCCH based on at least one of the above-mentioned average power, average delay, delay spread, Doppler frequency shift, Doppler spread, spatial reception parameters, and beam, thereby improving the reception reliability of the public PDCCH.

[0210] As an optional implementation manner, the transmission characteristics of different transmissions of the common PDCCH repeated transmission are as follows:

[0211] have the same transmission characteristics, or have different transmission characteristics.

[0212] The above-mentioned having the same transmission characteristics or having different transmission characteristics may be determined based on the network side configuration or based on the protocol agreement.

[0213] In this implementation, since different transmissions supporting repeated transmission of the public PDCCH have the same transmission characteristics, this can save configuration overhead and reduce the complexity of the terminal receiving the public PDCCH. Different transmissions supporting repeated transmission of the public PDCCH have different transmission characteristics, which can achieve more flexible public PDCCH transmission.

[0214] Optionally, when the transmission characteristics of different transmissions of the common PDCCH repeated transmission are the same, the multiple transmissions of the common PDCCH repeated transmission and at least one downlink reference signal (Reference Signal, RS) are QCL, or the demodulation reference signal (demodulation reference signal, DMRS) antenna port of the common PDCCH repeated transmission and at least one downlink reference signal are QCL;

[0215] or,

[0216] When the transmission characteristics of different transmissions of the public PDCCH repetition are different, the i-th transmission of the public PDCCH repetition and at least one downlink reference signal are QCL, or the DMRS antenna port of the i-th transmission of the public PDCCH repetition and at least one downlink reference signal are QCL, and the value of i is greater than or equal to 1 and less than or equal to the number of repetitions of the public PDCCH.

[0217] Optionally, the downlink reference signal includes at least one of the following:

[0218] The reference signal associated with the repeatedly transmitted PDCCH;

[0219] Reference signal associated with PRACH;

[0220] Reference signal associated with the CORESET where the PDCCH is located;

[0221] a reference signal sent by the serving cell; and

[0222] Reference signal associated with PRACH repetitive transmission;

[0223] The reference signal includes an SSB or a channel state information reference signal (Channel State Information Reference Signal, CSI-RS).

[0224] For example, the SSB included in the downlink reference signal includes at least one of the following:

[0225] The SSB associated with the repeatedly transmitted PDCCH;

[0226] The SSB to which the PRACH is associated;

[0227] The SSB associated with the CORESET where the PDCCH is located;

[0228] SSB sent by the serving cell;

[0229] The PRACH repetitive transmission is associated with the SSB, such as the associated first or last SSB.

[0230] For example, the CSI-RS included in the downlink reference signal includes at least one of the following:

[0231] The CSI-RS associated with the repeatedly transmitted PDCCH;

[0232] CSI-RS associated with PRACH;

[0233] The CSI-RS associated with the CORESET where the PDCCH is located;

[0234] CSI-RS sent by the serving cell;

[0235] The PRACH repeatedly transmits the associated CSI-RS, such as the associated first or last CSI-RS.

[0236] In the above implementation, it is possible to achieve QCL of repeated transmission of the downlink reference signal and the common PDCCH, which can avoid introducing additional configuration signaling and thus save configuration overhead.

[0237] Optionally, when different transmissions of the common PDCCH repeated transmission have different transmission characteristics, the beams of other transmissions of the common PDCCH repeated transmission include at least one of the following:

[0238] Adding a beam determined by the angle offset to the beam of the transmission closest to the other transmissions in the repeated transmission of the common PDCCH;

[0239] beam indicated by the beam pattern;

[0240] The other transmissions are transmissions different from the i-th transmission.

[0241] The above angle offset may be agreed upon by the protocol or configured on the network side.

[0242] The above-mentioned beam pattern may indicate the beam for each transmission.

[0243] In this implementation, the beam for each transmission can be accurately determined, thereby improving the reliability of the terminal receiving the common PDCCH.

[0244] Optionally, in the case where the public PDCCH repeated transmission has transmissions in different beams, the different beams are: multiple beams divided from the downlink beam corresponding to the SSB associated with the public PDCCH repeated transmission.

[0245] Among them, the multiple beams divided from the downlink beam corresponding to the SSB associated with the repeated transmission of the public PDCCH can be called narrow beams or fine beams, specifically narrower / finer beams divided from the downlink beam corresponding to the associated SSB. For example, when the downlink beam corresponding to the associated SSB is a wide beam at 30 degrees, the multiple beams can be three narrow beams pointing to 30 and 30±2 degrees.

[0246] In this embodiment, since different beams in the repeated transmission of the public PDCCH are multiple beams divided from the downlink beam corresponding to the SSB associated with the repeated transmission of the public PDCCH, these multiple beams can be associated with the beam of the same SSB, so that the terminal can better monitor the public PDCCH in these multiple beams.

[0247] As an optional implementation manner, the transmission characteristics of the repeated transmission of the common PDCCH are at least partially the same as the transmission characteristics of the downlink reference signal resources corresponding to the PRACH resources used by the terminal.

[0248] The downlink reference signal resource may include at least one of the following:

[0249] SSB resources, CSI-RS resources.

[0250] The transmission characteristic of the downlink reference signal resource may be a transmission characteristic of transmitting a downlink reference signal on the downlink reference signal resource.

[0251] In this implementation, since the transmission characteristics of the repeated transmission of the common PDCCH are at least partially the same as the transmission characteristics of the downlink reference signal resources corresponding to the PRACH resources used by the terminal, this can save the signaling overhead for configuring the transmission performance.

[0252] As an optional embodiment, when the PRACH used by the terminal adopts repeated transmission, the transmission characteristics of the i-th transmission of the public PDCCH repeated transmission are at least partially the same as the transmission characteristics of the i-th transmission of the PRACH, and the value of i is greater than or equal to 1 and less than or equal to min{the maximum number of repetitions of the public PDCCH, the maximum number of repetitions of the PRACH}.

[0253] The number of repetitions of the public PDCCH repeated transmission is the same as the number of repetitions of the downlink reference signal, or the number of repetitions of the public PDCCH repeated transmission is less than the number of repetitions of the downlink reference signal. For example, when the number of PRACH repetitions is the same as the number of public PDCCH repetitions, the PRACH and public PDCCH transmissions use a one-to-one correspondence with at least partially identical transmission characteristics.

[0254] In some embodiments, if the number of repetitions of the common PDCCH repeated transmission is greater than the number of repetitions of the above-mentioned downlink reference signal, the characteristics of the transmission of the common PDCCH repeated transmission exceeding the number of repetitions of the downlink reference signal can be determined based on the above-mentioned other embodiments, such as network side configuration or protocol agreement.

[0255] In this implementation, since the transmission characteristics of the i-th transmission of the common PDCCH repeated transmission are at least partially the same as the transmission characteristics of the i-th transmission of the PRACH, this can save the signaling overhead for configuring the transmission performance.

[0256] In this embodiment of the present application, a terminal determines a transmission resource or transmission characteristic for repeated transmission of a common PDCCH; the terminal receives the repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic; wherein the common PDCCH includes at least one of the following: SIB1 PDCCH, OSI PDCCH, Message 2 PDCCH, Message 4 PDCCH, Message B PDCCH, Paging PDCCH, and PDCCH for scheduling retransmission of Message 3. This enables the terminal to perform repeated transmission of the common PDCCH, thereby improving network coverage performance.

[0257] For example: before the terminal RRC connection is established, the network side device uses the public PDCCH to send scheduling information of some public messages (such as RMSI / OSI / Paging / Msg2 / MsgB / Msg4). In an embodiment of the present application, in some scenarios (such as the NTN scenario), by scheduling the repeated transmission of the PDCCH of Msg2, the terminal is improved to successfully receive the PDCCH, so as to complete random access and establish an RRC connection.

[0258] Please refer to FIG3 , which is a flowchart of a common PDCCH receiving method provided by an embodiment of the present application. As shown in FIG3 , it includes the following steps:

[0259] Step 301: The network side device determines the transmission resources or transmission characteristics for repeated transmission of the common PDCCH;

[0260] Step 302: The network-side device performs repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic.

[0261] The public PDCCH includes at least one of the following:

[0262] System information block SIB1 PDCCH, other system messages OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, PDCCH for scheduling message 3 retransmission.

[0263] Optionally, the transmission resource includes at least one of the following:

[0264] Time slot, monitoring opportunity;

[0265] The time slot includes at least one of the following:

[0266] Physical time slots, available time slots;

[0267] The monitoring opportunity includes at least one of the following:

[0268] Physical PDCCH monitoring opportunity, available PDCCH monitoring opportunity.

[0269] Optionally, the physical time slot includes: a continuous physical time slot; or,

[0270] The physical PDCCH monitoring opportunities include: consecutive physical PDCCH monitoring opportunities.

[0271] Optionally, the continuous physical time slots belong to the same search space, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located; or, the continuous physical time slots belong to multiple search spaces, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located;

[0272] or,

[0273] The consecutive physical PDCCH monitoring opportunities belong to the same search space; or, the consecutive physical PDCCH monitoring opportunities belong to different search spaces.

[0274] Optionally, the available time slot satisfies at least one of the following:

[0275] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the synchronization signal block SSB is located;

[0276] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical random access channel PRACH is located;

[0277] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical uplink shared channel PUSCH of message A is located;

[0278] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to other search spaces, and the other search spaces are different from the search space corresponding to the common PDCCH repeated transmission;

[0279] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to another control resource set CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission;

[0280] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where other common PDCCHs are located;

[0281] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a downlink symbol;

[0282] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a flexible symbol.

[0283] Optionally, the available PDCCH monitoring opportunity satisfies at least one of the following:

[0284] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the SSB is located;

[0285] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the PRACH is located;

[0286] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the message A PUSCH is located;

[0287] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other search spaces, and the other search spaces are different from the search spaces corresponding to the common PDCCH repeated transmissions;

[0288] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other control resource sets CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission;

[0289] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols where other common PDCCHs are located;

[0290] The symbol corresponding to the available PDCCH monitoring opportunity is a downlink symbol;

[0291] The symbols corresponding to the available PDCCH monitoring opportunities are flexible symbols.

[0292] Optionally, in a case where the common PDCCH repeated transmission is repeated transmission between time slots, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following:

[0293] The number of the physical time slots and the number of the available time slots;

[0294] or,

[0295] In the case where the common PDCCH repeated transmission is an inter-opportunity repeated transmission, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following:

[0296] The number of physical PDCCH monitoring opportunities and the number of available PDCCH monitoring opportunities.

[0297] Optionally, also include:

[0298] In a case where the transmission resource includes a conflicting time slot in which repeated transmission of the common PDCCH conflicts with other channels, performing the first process or the second process on the conflicting time slot;

[0299] The first processing includes: discarding the common PDCCH repeated transmission in the conflict time slot;

[0300] The second processing includes discarding the other channels in the conflict time slot.

[0301] Optionally, performing the first processing or the second processing on the conflicting time slot includes:

[0302] In a first case, the first process is performed on the conflicting time slot, where the first case includes at least one of the following:

[0303] The common PDCCH includes a system information block SIB1 PDCCH, and the other channels include SSBs;

[0304] The common PDCCH includes a message 2 PDCCH, and the other channels include at least one of the following: an SSB, a SIB1 PDCCH, a SIB1 PDSCH, a PRACH, a message A PRACH, and a message A PUSCH;

[0305] The common PDCCH includes a message 4 PDCCH or a message B PDCCH, and the other channels include at least one of the following: an SSB, a SIB1 PDCCH, a SIB1 PDSCH, a PRACH, a message A PRACH, a message A PUSCH, a message 2 PDCCH, a message 2 PDSCH, a message 3, and a PDCCH for scheduling retransmission of message 3;

[0306] The common PDCCH includes a PDCCH for scheduling retransmission of message 3, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3;

[0307] The common PDCCH includes a paging PDCCH, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3, PDCCH for scheduling message 3 retransmission, message 4 PDCCH, message 4 PDSCH, and physical uplink shared channel PUCCH for feedback message 4 hybrid automatic repeat request HARQ;

[0308] or,

[0309] In a second case, the second process is performed on the conflicting time slot, where the second case includes at least one of the following:

[0310] The public PDCCH includes SIB1 PDCCH, and the other channels include at least one of the following: other PDCCH, non-SIB1 PDSCH, PRACH, and public PUSCH;

[0311] The common PDCCH includes at least one of a message 2 PDCCH, a message 4 PDCCH, and a message B PDCCH, and the other channels include at least one of the following:

[0312] Other PDCCHs except SIB1 PDCCH;

[0313] Other PDSCHs except SIB1 PDSCH;

[0314] Public PUSCH;

[0315] Dedicated PUCCH.

[0316] Optionally, the performing the first processing or the second processing on the conflicting timeslot includes:

[0317] According to any of the following rules, the first process or the second process is performed on the conflicting time slot:

[0318] Prioritizing the first transmission of the repeated transmission of the common PDCCH;

[0319] Prioritize transmission of high-priority channels;

[0320] In the case of the same priority, the channel with the earlier generation time is given priority.

[0321] Optionally, the transmission resource includes a transmission resource indicated by at least one of the following:

[0322] Transmission resources indicated by system information;

[0323] The transmission resources indicated by SSB;

[0324] The transmission resources indicated by the PDCCH resource configuration table;

[0325] The transmission resources indicated by CORESET;

[0326] The transmission resources indicated by the search space;

[0327] Transmission resources indicated by PDCCH monitoring opportunity;

[0328] The transmission resource indicated by the PRACH resource;

[0329] The transmission resource indicated by the PRACH format;

[0330] The repetition count type indicates the transmission resource.

[0331] Optionally, the transmission resource meets one of the following conditions:

[0332] The time slot in which the first transmission of the repeated transmission of the common PDCCH occurs is an available time slot;

[0333] The time slot where the transmission opportunity of the first transmission of the repeated transmission of the common PDCCH is located is an available time slot;

[0334] The time slot where the common PDCCH is repeatedly transmitted is an available time slot;

[0335] The transmission opportunity of the repeated transmission of the common PDCCH is an available transmission opportunity;

[0336] The time slot where the common PDCCH is repeatedly transmitted is a physical time slot;

[0337] The transmission timing of the repeated transmission of the common PDCCH is a physical transmission timing;

[0338] The time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB;

[0339] The transmission timing of the repeated transmission of the common PDCCH is associated with SSB.

[0340] Optionally, the time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB, including at least one of the following:

[0341] In a case where each transmission of the repeated public PDCCH transmission is quasi-co-located with the same SSB, resources of each transmission of the repeated public PDCCH transmission are associated with a transmission time of the SSB of the same beam;

[0342] In the case where each transmission of the common PDCCH repetition transmission is QCL with different SSBs, resources of each transmission of the common PDCCH repetition transmission are associated with transmission times of the SSBs of different beams.

[0343] Optionally, when the transmission characteristics of different transmissions of the common PDCCH repeated transmission are the same, the multiple transmissions of the common PDCCH repeated transmission and at least one downlink reference signal are QCL, or the demodulation reference signal DMRS antenna port of the common PDCCH repeated transmission and at least one downlink reference signal are QCL;

[0344] or,

[0345] When the transmission characteristics of different transmissions of the public PDCCH repetition are different, the i-th transmission of the public PDCCH repetition and at least one downlink reference signal are QCL, or the DMRS antenna port of the i-th transmission of the public PDCCH repetition and at least one downlink reference signal are QCL, and the value of i is greater than or equal to 1 and less than or equal to the number of repetitions of the public PDCCH.

[0346] Optionally, the downlink reference signal includes at least one of the following:

[0347] The reference signal associated with the repeatedly transmitted PDCCH;

[0348] Reference signal associated with PRACH;

[0349] Reference signal associated with the CORESET where the PDCCH is located;

[0350] a reference signal sent by the serving cell; and

[0351] Reference signal associated with PRACH repetitive transmission;

[0352] The reference signal includes SSB or CSI-RS.

[0353] Optionally, when different transmissions of the common PDCCH repeated transmission have different transmission characteristics, the beams of other transmissions of the common PDCCH repeated transmission include at least one of the following:

[0354] Adding a beam determined by the angle offset to the beam of the transmission closest to the other transmissions in the repeated transmission of the common PDCCH;

[0355] beam indicated by the beam pattern;

[0356] The other transmissions are transmissions different from the i-th transmission.

[0357] Optionally, in the case where there is transmission of different beams in the repeated transmission of the public PDCCH, the different beams are: multiple beams divided from the downlink beam corresponding to the SSB associated with the repeated transmission of the public PDCCH.

[0358] Optionally, a transmission characteristic of the repeated transmission of the common PDCCH is at least partially the same as a transmission characteristic of a downlink reference signal resource corresponding to a PRACH resource used by the terminal.

[0359] Optionally, in the case where the PRACH used by the terminal adopts repeated transmission, the transmission characteristics of the i-th transmission of the public PDCCH repeated transmission are at least partially the same as the transmission characteristics of the i-th transmission of the PRACH, and the value of i is greater than or equal to 1 and less than or equal to min{the maximum number of repetitions of the public PDCCH, the maximum number of repetitions of PRACH}.

[0360] It should be noted that this embodiment is an implementation of the network side device corresponding to the embodiment shown in Figure 2. Its specific implementation can refer to the relevant description of the embodiment shown in Figure 2. In order to avoid repeated description, this embodiment will not be repeated.

[0361] The following describes the method provided in the embodiments of the present application through multiple examples:

[0362] Example 1:

[0363] This embodiment mainly describes the transmission resource determination of common PDCCH repetition, which is as follows:

[0364] In some embodiments, the slots for repeated Common PDCCH transmissions are determined based on physical slots, which may be consecutive physical slots, for example, at least one of the following:

[0365] Consecutive physical slots are used for PDCCH repetition, where the resources and resource elements (REs) of the PDCCH repetitions within the consecutive physical slots may be the same or different.

[0366] Consecutive physical slots of PDCCH monitoring occasions belonging to the same search space are used for PDCCH repetition;

[0367] Consecutive physical slots of PDCCH monitoring occasions belonging to multiple search spaces are used for PDCCH repetition.

[0368] In addition, for inter-slot repetition, these physical slots are counted in the configured repetition count.

[0369] In some embodiments, the PDCCH occasion for repeated Common PDCCH transmission is determined based on physical PDCCH monitoring occasions, which may be consecutive physical PDCCH monitoring occasions, such as at least one of the following:

[0370] Consecutive physical PDCCH monitoring occasions are used for PDCCH repetition. The symbols and RE positions of the PDCCH repetitions in the consecutive physical PDCCH monitoring occasions may be the same or different.

[0371] Consecutive physical PDCCH monitoring occasions containing the same search space are used for PDCCH repetition transmission;

[0372] Continuous physical PDCCH monitoring occasions containing multiple search spaces are used for PDCCH repetition transmission.

[0373] Furthermore, for inter-occasion repetition, these physical PDCCH monitoring occasions are counted in the configured number of repetitions.

[0374] In some embodiments, conflict resolution between physical slot-based Common PDCCH repetition and other channels includes at least one of the following:

[0375] When there is a conflict with other channels, the current Common PDCCH repetition is discarded; for example: when the Common PDCCH is SIB1 PDCCH, the other channel may be SSB; for another example: when the Common PDCCH is Msg2 PDCCH, the other channel may be one or more of SSB, SIB1 PDCCH / PDSCH, PRACH, MsgA PRACH\PUSCH; for another example: when the Common PDCCH is Msg4 PDCCH or MsgB PDCCH, the other channel may be one or more of SSB, SIB1 PDCCH / PDSCH, PRACH, MsgA PRACH\PUSCH, Msg2 PDCCH / PDSCH, Msg3, and PDCCH for scheduling Msg3 retransmission; for another example: when the Common PDCCH is PDCCH for scheduling Msg3 retransmission, the other channel may be SSB, SIB1 PDCCH / PDSCH, PRACH, MsgA PRACH\PUSCH One or more of PRACH\PUSCH, Msg2 PDCCH / PDSCH, and Msg3. For another example, when the Common PDCCH is a Paging PDCCH, the other channels may be one or more of SSB, SIB1 PDCCH / PDSCH, PRACH, MsgA PRACH\PUSCH, Msg2 PDCCH / PDSCH, Msg3, PDCCH for scheduling Msg3 retransmission, Msg4 PDCCH\PDSCH, and PUCCH for Msg4 HARQ feedback.

[0376] When there is a conflict with other channels, Common PDCCH repetition is given priority and other channels are discarded; for example, when the Common PDCCH is SIB1 PDCCH, the other channels may be one or more of other PDCCHs, other (non-SIB1) PDSCHs, PRACHs, and Common PUSCHs; for another example, when the Common PDCCH is Msg2 PDCCH, Msg4 PDCCH, or MsgB PDCCH, the other channels may be one or more of other PDCCHs other than SIB1 PDCCH, other PDSCHs other than SIB1 PDSCH, Common PUSCH, and dedicated PUCCH;

[0377] Whether to discard Common PDCCH repetition when it conflicts with other channels depends on one or more of the following rules:

[0378] Whether it is the first Common PDCCH repetition transmission, first common PDCCH repetition is prioritized;

[0379] Define the priority of conflicting channels (the priority can be configured by the network or specified in advance by the protocol), and determine which channel to drop based on the priority, for example, the priority is: Common PDCCH repetition first transmission > transmission other than Common PDCCH repetition first transmission > other PDCCH > PDSCH;

[0380] If the priorities are the same, the transmission with an earlier generation time will be given priority.

[0381] In some embodiments, the slot for Common PDCCH repetition transmission is determined based on available slots, and only available slots are used for PDCCH repetition.

[0382] Furthermore, for inter-slot repetition, these available slots will be counted in the configured number of repetitions.

[0383] In some embodiments, the available time slots for common PDCCH repetition are determined based on at least one of the following:

[0384] The symbol where the Common PDCCH is located does not overlap with the SSB;

[0385] The symbol of the Common PDCCH does not overlap with the PRACH;

[0386] The symbol of the Common PDCCH does not overlap with the MsgA PUSCH;

[0387] The symbol where the Common PDCCH is located does not overlap with other search spaces;

[0388] The symbol where the Common PDCCH is located does not overlap with other CORESETs;

[0389] The symbol where the Common PDCCH is located does not overlap with the Common PDCCH;

[0390] The symbol where the Common PDCCH is located is a Downlink symbol, for example, the DL symbols are determined based on a time division duplex-uplink-downlink common configuration (TDD-UL-DL-ConfigCommon);

[0391] The symbol where the Common PDCCH is located is a flexible symbol.

[0392] In some embodiments, the PDCCH occasion for Common PDCCH repetition transmission is determined based on the available occasion, and only the available occasion is used for PDCCH repetition.

[0393] Furthermore, for inter-occasion repetition, only these available occasions will be counted in the configured number of repetitions.

[0394] In some embodiments, the available time slot for common PDCCH repetition is determined based on at least one of the following:

[0395] The symbol of the Common PDCCH occasion does not overlap with the SSB;

[0396] The symbol of the Common PDCCH occasion does not overlap with the PRACH;

[0397] The symbol of the Common PDCCH occasion does not overlap with the MsgA PUSCH;

[0398] The symbol of the Common PDCCH occasion does not overlap with other search spaces;

[0399] The symbol of the Common PDCCH occasion does not overlap with other CORESETs;

[0400] The symbol of the Common PDCCH occasion does not overlap with the Common PDCCH;

[0401] The symbols of the Common PDCCH occasion are Downlink symbols, for example, the DL symbols are determined based on TDD-UL-DL-ConfigCommon;

[0402] The symbols of the Common PDCCH occasion are flexible symbols and do not overlap with SSB and PRACH.

[0403] In some embodiments, the Common PDCCH repetition based on available time slots / available opportunities or physical time slots / physical opportunities may be determined by one or more of the following methods:

[0404] Indicated by system information (MIB or SIB);

[0405] Instructed by SSB;

[0406] Indicated by the PDCCH resource configuration table indicated by the MIB;

[0407] Indicated by a specific CORESET or search space or PDCCH MO;

[0408] Indicated by different PRACH resource / format.

[0409] In some embodiments, the time slots / opportunities used for common PDCCH repetition meet one or more of the following rules:

[0410] The slot / occasion of the first common PDCCH repetition must be an available slot or a non-available slot;

[0411] The slot / occasion of the common PDCCH repetition must all be available slot / occasion;

[0412] The slot / occasion of the common PDCCH repetition must be a physical slot / occasion;

[0413] The slot / occasion of the common PDCCH repetition may be an available slot / occasion or a physical slot / occasion.

[0414] In some embodiments, the time slot / timing of the Common PDCCH repetition is related to the SSB, and the relationship between the time slot / timing of the Common PDCCH repetition and the SSB includes one or more of the following:

[0415] If the Common PDCCH repetition is associated with the same SSB (each repetition is QCL with the same SSB), the resource location of the slot / occasion of the Common PDCCH repetition is related to the transmission time of the SSB of the same beam; for example: the Common PDCCH repetition is associated with the SSB transmission of beam#1, then the resources of each Common PDCCH repetition transmission can be obtained through the SSB of beam#1, such as there is a fixed offset.

[0416] If the Common PDCCH repetition is associated with different SSBs (each repetition and different SSBs are QCL), the resource location of the slot / occasion of the Common PDCCH repetition is related to the transmission time of the SSBs of different beams. For example, the resources of each transmission of the Common PDCCH repetition are determined relative to the transmission time of the SSB of beam#1, the SSB of beam#2, the SSB of beam#3, etc., respectively, such that there is a one-to-one correspondence.

[0417] Example 2:

[0418] This embodiment mainly describes the transmission characteristics of Common PDCCH repetition, which are as follows:

[0419] In some embodiments, a transmission characteristic of a common PDCCH repetitive transmission is determined. The transmission characteristic includes at least one of the following:

[0420] Average power, average delay, delay spread, Doppler shift, Doppler spread, spatial Rx parameter, and corresponding transmission beam.

[0421] In some embodiments, the transmission characteristics of the different Common PDCCH repetition transmissions are the same, for example:

[0422] The PDCCH repetition or its DMRS antenna port and at least one downlink reference signal among a plurality of downlink reference signals are quasi-co-located, wherein the downlink reference signal includes an SSB and / or a CSI-RS. The SSB includes at least one of the following:

[0423] The SSB and / or CSI-RS associated with the repeatedly transmitted PDCCH;

[0424] The SSB and / or CSI-RS associated with the corresponding PRACH;

[0425] The SSB and / or CSI-RS associated with CORESET#0 where the PDCCH is located;

[0426] All SSBs sent by the serving cell;

[0427] One of the downlink reference signals associated with the related PRACH repeated transmission, for example, the first or the last one.

[0428] In some embodiments, the transmission characteristics of the different Common PDCCH repetition transmissions may be different, for example:

[0429] A certain transmission (e.g., a first transmission) of the Common PDCCH repetition or a DMRS antenna port of the PDCCH and at least one downlink reference signal among multiple downlink reference signals are quasi-co-located, wherein the downlink reference signal includes an SSB and / or a CSI-RS, and the SSB and / or CSI-RS includes at least one of the following:

[0430] The SSB and / or CSI-RS associated with the repeatedly transmitted PDCCH;

[0431] The SSB and / or CSI-RS associated with the corresponding PRACH;

[0432] The SSB and / or CSI-RS associated with CORESET#0 where the PDCCH is located;

[0433] All SSBs sent by the serving cell;

[0434] One of the downlink reference signals associated with the related PRACH repeated transmission, such as the first or the last one.

[0435] Determination of other transmission beams in the Common PDCCH repetition includes at least one of the following:

[0436] Obtained by adding a fixed angle to the most recent Common PDCCH repetition transmission beam.

[0437] The beam transmitted by the Common PDCCH repetition follows a predefined beam pattern.

[0438] The different beams transmitted in different Common PDCCH repetitions are narrow beams, which are narrower / finer beams divided from the downlink beam corresponding to the associated SSB. For example, if the downlink beam corresponding to the associated SSB is a wide beam at 30 degrees, the narrow beams can be three narrow beams pointing at 30 and 30±2 degrees.

[0439] In some embodiments, the common PDCCH repeated transmission has at least partially the same transmission characteristics as the SSB or CSI-RS resources corresponding to the PRACH resources used by the terminal.

[0440] In some embodiments, if the PRACH resource used by the UE uses repeated transmission, the DMRS port of each repetition of the common PDCCH repeated transmission and the SSB or CSI-RS resource corresponding to each repetition of the PRACH resource used by the terminal have at least partially the same transmission characteristics. The PRACH repetition and the PDCCH repetition transmission use at least partially the same transmission characteristics according to a certain specific correspondence. For example, when the number of PRACH repetitions is the same as the number of PDCCH repetitions, the two transmissions use the at least partially the same transmission characteristics in a one-to-one correspondence.

[0441] The public PDCCH receiving method provided in the embodiment of the present application can be executed by a public PDCCH receiving apparatus. In the embodiment of the present application, the public PDCCH receiving apparatus performing the public PDCCH receiving method is taken as an example to illustrate the public PDCCH receiving apparatus provided in the embodiment of the present application.

[0442] Please refer to FIG. 4 , which is a structural diagram of a device for processing PDCCH repeated transmission provided in an embodiment of the present application. As shown in FIG. 4 , the device 400 for processing PDCCH repeated transmission includes:

[0443] Determination module 401, configured to determine transmission resources or transmission characteristics for repeated transmission of a common PDCCH;

[0444] A receiving module 402 is configured to receive the common PDCCH repeated transmission based on the transmission resource or the transmission characteristic;

[0445] The public PDCCH includes at least one of the following:

[0446] System information block SIB1 PDCCH, other system messages OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, PDCCH for scheduling message 3 retransmission.

[0447] Optionally, the transmission resource includes at least one of the following:

[0448] Time slot, monitoring opportunity;

[0449] The time slot includes at least one of the following:

[0450] Physical time slots, available time slots;

[0451] The monitoring opportunity includes at least one of the following:

[0452] Physical PDCCH monitoring opportunity, available PDCCH monitoring opportunity.

[0453] Optionally, the physical time slot includes: a continuous physical time slot; or,

[0454] The physical PDCCH monitoring opportunities include: consecutive physical PDCCH monitoring opportunities.

[0455] Optionally, the continuous physical time slots belong to the same search space, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located; or, the continuous physical time slots belong to multiple search spaces, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located;

[0456] or,

[0457] The consecutive physical PDCCH monitoring opportunities belong to the same search space; or, the consecutive physical PDCCH monitoring opportunities belong to different search spaces.

[0458] Optionally, the available time slot satisfies at least one of the following:

[0459] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the synchronization signal block SSB is located;

[0460] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical random access channel PRACH is located;

[0461] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical uplink shared channel PUSCH of message A is located;

[0462] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to other search spaces, and the other search spaces are different from the search space corresponding to the common PDCCH repeated transmission;

[0463] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to another control resource set CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission;

[0464] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where other common PDCCHs are located;

[0465] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a downlink symbol;

[0466] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a flexible symbol.

[0467] Optionally, the available PDCCH monitoring opportunity satisfies at least one of the following:

[0468] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the SSB is located;

[0469] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the PRACH is located;

[0470] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the message A PUSCH is located;

[0471] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other search spaces, and the other search spaces are different from the search spaces corresponding to the common PDCCH repeated transmissions;

[0472] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other control resource sets CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission;

[0473] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols where other common PDCCHs are located;

[0474] The symbol corresponding to the available PDCCH monitoring opportunity is a downlink symbol;

[0475] The symbols corresponding to the available PDCCH monitoring opportunities are flexible symbols.

[0476] Optionally, in a case where the common PDCCH repeated transmission is repeated transmission between time slots, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following:

[0477] The number of the physical time slots and the number of the available time slots;

[0478] or,

[0479] In the case where the common PDCCH repeated transmission is an inter-opportunity repeated transmission, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following:

[0480] The number of physical PDCCH monitoring opportunities and the number of available PDCCH monitoring opportunities.

[0481] Optionally, also include:

[0482] an execution module, configured to, when the transmission resource includes a conflicting time slot in which repeated transmission of the common PDCCH conflicts with other channels, perform the first processing or the second processing on the conflicting time slot;

[0483] The first processing includes: discarding reception of the common PDCCH repeated transmission in the contention time slot;

[0484] The second processing includes discarding reception of the other channels in the conflict time slot.

[0485] Optionally, performing the first processing or the second processing on the conflicting time slot includes:

[0486] In a first case, the first process is performed on the conflicting time slot, where the first case includes at least one of the following:

[0487] The common PDCCH includes a system information block SIB1 PDCCH, and the other channels include SSBs;

[0488] The common PDCCH includes a message 2 PDCCH, and the other channels include at least one of the following: an SSB, a SIB1 PDCCH, a SIB1 PDSCH, a PRACH, a message A PRACH, and a message A PUSCH;

[0489] The common PDCCH includes a message 4 PDCCH or a message B PDCCH, and the other channels include at least one of the following: an SSB, a SIB1 PDCCH, a SIB1 PDSCH, a PRACH, a message A PRACH, a message A PUSCH, a message 2 PDCCH, a message 2 PDSCH, a message 3, and a PDCCH for scheduling retransmission of message 3;

[0490] The common PDCCH includes a PDCCH for scheduling retransmission of message 3, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3;

[0491] The common PDCCH includes a paging PDCCH, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3, PDCCH for scheduling message 3 retransmission, message 4 PDCCH, message 4 PDSCH, and physical uplink shared channel PUCCH for feedback message 4 hybrid automatic repeat request HARQ;

[0492] or,

[0493] In a second case, the second process is performed on the conflicting time slot, where the second case includes at least one of the following:

[0494] The public PDCCH includes SIB1 PDCCH, and the other channels include at least one of the following: other PDCCH, non-SIB1 PDSCH, PRACH, and public PUSCH;

[0495] The common PDCCH includes at least one of a message 2 PDCCH, a message 4 PDCCH, and a message B PDCCH, and the other channels include at least one of the following:

[0496] Other PDCCHs except SIB1 PDCCH;

[0497] Other PDSCHs except SIB1 PDSCH;

[0498] Public PUSCH;

[0499] Dedicated PUCCH.

[0500] Optionally, the performing the first processing or the second processing on the conflicting timeslot includes:

[0501] According to any of the following rules, the first process or the second process is performed on the conflicting time slot:

[0502] Prioritizing the first transmission of the repeated transmission of the common PDCCH;

[0503] Prioritize transmission of high-priority channels;

[0504] In the case of the same priority, the channel with the earlier generation time is given priority.

[0505] Optionally, the transmission resource includes a transmission resource indicated by at least one of the following:

[0506] Transmission resources indicated by system information;

[0507] The transmission resources indicated by SSB;

[0508] The transmission resources indicated by the PDCCH resource configuration table;

[0509] The transmission resources indicated by CORESET;

[0510] The transmission resources indicated by the search space;

[0511] Transmission resources indicated by PDCCH monitoring opportunity;

[0512] The transmission resource indicated by the PRACH resource;

[0513] The transmission resource indicated by the PRACH format;

[0514] The repetition count type indicates the transmission resource.

[0515] Optionally, the transmission resource meets one of the following conditions:

[0516] The time slot in which the first transmission of the repeated transmission of the common PDCCH occurs is an available time slot;

[0517] The time slot where the transmission opportunity of the first transmission of the repeated transmission of the common PDCCH is located is an available time slot;

[0518] The time slot where the common PDCCH is repeatedly transmitted is an available time slot;

[0519] The transmission opportunity of the repeated transmission of the common PDCCH is an available transmission opportunity;

[0520] The time slot where the common PDCCH is repeatedly transmitted is a physical time slot;

[0521] The transmission timing of the repeated transmission of the common PDCCH is a physical transmission timing;

[0522] The time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB;

[0523] The transmission timing of the repeated transmission of the common PDCCH is associated with SSB.

[0524] Optionally, the time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB, including at least one of the following:

[0525] In a case where each transmission of the repeated public PDCCH transmission is quasi-co-located with the same SSB, resources of each transmission of the repeated public PDCCH transmission are associated with a transmission time of the SSB of the same beam;

[0526] In the case where each transmission of the common PDCCH repetition transmission is QCL with different SSBs, resources of each transmission of the common PDCCH repetition transmission are associated with transmission times of the SSBs of different beams.

[0527] Optionally, when the transmission characteristics of different transmissions of the common PDCCH repeated transmission are the same, the multiple transmissions of the common PDCCH repeated transmission and at least one downlink reference signal are QCL, or the demodulation reference signal DMRS antenna port of the common PDCCH repeated transmission and at least one downlink reference signal are QCL;

[0528] or,

[0529] When the transmission characteristics of different transmissions of the public PDCCH repetition are different, the i-th transmission of the public PDCCH repetition and at least one downlink reference signal are QCL, or the DMRS antenna port of the i-th transmission of the public PDCCH repetition and at least one downlink reference are QCL, and the value of i is greater than or equal to 1 and less than or equal to the number of repetitions of the public PDCCH.

[0530] Optionally, the downlink reference signal includes at least one of the following:

[0531] The reference signal associated with the repeatedly transmitted PDCCH;

[0532] Reference signal associated with PRACH;

[0533] Reference signal associated with the CORESET where the PDCCH is located;

[0534] a reference signal sent by the serving cell; and

[0535] Reference signal associated with PRACH repetitive transmission;

[0536] The reference signal includes SSB or CSI-RS.

[0537] Optionally, when different transmissions of the common PDCCH repeated transmission have different transmission characteristics, the beams of other transmissions of the common PDCCH repeated transmission include at least one of the following:

[0538] Adding a beam determined by the angle offset to the beam of the transmission closest to the other transmissions in the repeated transmission of the common PDCCH;

[0539] beam indicated by the beam pattern;

[0540] The other transmissions are transmissions different from the i-th transmission.

[0541] Optionally, in the case where there is transmission of different beams in the repeated transmission of the public PDCCH, the different beams are: multiple beams divided from the downlink beam corresponding to the SSB associated with the repeated transmission of the public PDCCH.

[0542] Optionally, a transmission characteristic of the repeated transmission of the common PDCCH is at least partially the same as a transmission characteristic of a downlink reference signal resource corresponding to a PRACH resource used by the terminal.

[0543] Optionally, in the case where the PRACH used by the terminal adopts repeated transmission, the transmission characteristics of the i-th transmission of the public PDCCH repeated transmission are at least partially the same as the transmission characteristics of the i-th transmission of the PRACH, and the value of i is greater than or equal to 1 and less than or equal to min{the maximum number of repetitions of the public PDCCH, the maximum number of repetitions of PRACH}.

[0544] The above-mentioned public PDCCH receiving device can improve the coverage performance of the network.

[0545] In the embodiments of the present application, the public PDCCH receiving device can be an electronic device, such as an electronic device with an operating system, or a component of the electronic device, such as an integrated circuit or chip. For example, 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 terminals listed in the embodiments of the present application. Other devices can include servers, network attached storage (NAS), etc., and are not specifically limited in the embodiments of the present application.

[0546] The public PDCCH receiving device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 2 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0547] The public PDCCH transmission method provided in the embodiment of the present application can be executed by a public PDCCH transmission device. In the embodiment of the present application, the public PDCCH transmission device performing the public PDCCH transmission method is taken as an example to illustrate the public PDCCH transmission device provided in the embodiment of the present application.

[0548] Please refer to FIG5 , which is a structural diagram of a common PDCCH transmitting apparatus provided in an embodiment of the present application. As shown in FIG5 , the common PDCCH transmitting apparatus 500 includes:

[0549] A determination module 501 is configured to determine transmission resources or transmission characteristics for repeated transmission of a common PDCCH;

[0550] An execution module 502 is configured to perform repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic;

[0551] The public PDCCH includes at least one of the following:

[0552] System information block SIB1 PDCCH, other system messages OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, PDCCH for scheduling message 3 retransmission.

[0553] Optionally, the transmission resource includes at least one of the following:

[0554] Time slot, monitoring opportunity;

[0555] The time slot includes at least one of the following:

[0556] Physical time slots, available time slots;

[0557] The monitoring opportunity includes at least one of the following:

[0558] Physical PDCCH monitoring opportunity, available PDCCH monitoring opportunity.

[0559] Optionally, the physical time slot includes: a continuous physical time slot; or,

[0560] The physical PDCCH monitoring opportunities include: consecutive physical PDCCH monitoring opportunities.

[0561] Optionally, the continuous physical time slots belong to the same search space, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located; or, the continuous physical time slots belong to multiple search spaces, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located;

[0562] or,

[0563] The consecutive physical PDCCH monitoring opportunities belong to the same search space; or, the consecutive physical PDCCH monitoring opportunities belong to different search spaces.

[0564] Optionally, the available time slot satisfies at least one of the following:

[0565] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the synchronization signal block SSB is located;

[0566] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical random access channel PRACH is located;

[0567] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical uplink shared channel PUSCH of message A is located;

[0568] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to other search spaces, and the other search spaces are different from the search space corresponding to the common PDCCH repeated transmission;

[0569] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to another control resource set CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission;

[0570] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where other common PDCCHs are located;

[0571] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a downlink symbol;

[0572] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a flexible symbol.

[0573] Optionally, the available PDCCH monitoring opportunity satisfies at least one of the following:

[0574] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the SSB is located;

[0575] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the PRACH is located;

[0576] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the message A PUSCH is located;

[0577] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other search spaces, and the other search spaces are different from the search spaces corresponding to the common PDCCH repeated transmissions;

[0578] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other control resource sets CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission;

[0579] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols where other common PDCCHs are located;

[0580] The symbol corresponding to the available PDCCH monitoring opportunity is a downlink symbol;

[0581] The symbols corresponding to the available PDCCH monitoring opportunities are flexible symbols.

[0582] Optionally, in a case where the common PDCCH repeated transmission is repeated transmission between time slots, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following:

[0583] The number of the physical time slots and the number of the available time slots;

[0584] or,

[0585] In the case where the common PDCCH repeated transmission is an inter-opportunity repeated transmission, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following:

[0586] The number of physical PDCCH monitoring opportunities and the number of available PDCCH monitoring opportunities.

[0587] Optionally, also include:

[0588] a discarding module, configured to, when the transmission resource includes a conflicting time slot in which repeated transmission of the common PDCCH conflicts with other channels, perform the first processing or the second processing on the conflicting time slot;

[0589] The first processing includes: discarding the common PDCCH repeated transmission in the conflict time slot;

[0590] The second processing includes discarding the other channels in the conflict time slot.

[0591] Optionally, performing the first processing or the second processing on the conflicting time slot includes:

[0592] In a first case, the first process is performed on the conflicting time slot, where the first case includes at least one of the following:

[0593] The common PDCCH includes a system information block SIB1 PDCCH, and the other channels include SSBs;

[0594] The common PDCCH includes a message 2 PDCCH, and the other channels include at least one of the following: an SSB, a SIB1 PDCCH, a SIB1 PDSCH, a PRACH, a message A PRACH, and a message A PUSCH;

[0595] The common PDCCH includes a message 4 PDCCH or a message B PDCCH, and the other channels include at least one of the following: an SSB, a SIB1 PDCCH, a SIB1 PDSCH, a PRACH, a message A PRACH, a message A PUSCH, a message 2 PDCCH, a message 2 PDSCH, a message 3, and a PDCCH for scheduling retransmission of message 3;

[0596] The common PDCCH includes a PDCCH for scheduling retransmission of message 3, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3;

[0597] The common PDCCH includes a paging PDCCH, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3, PDCCH for scheduling message 3 retransmission, message 4 PDCCH, message 4 PDSCH, and physical uplink shared channel PUCCH for feedback message 4 hybrid automatic repeat request HARQ;

[0598] or,

[0599] In a second case, the second process is performed on the conflicting time slot, where the second case includes at least one of the following:

[0600] The public PDCCH includes SIB1 PDCCH, and the other channels include at least one of the following: other PDCCH, non-SIB1 PDSCH, PRACH, and public PUSCH;

[0601] The common PDCCH includes at least one of a message 2 PDCCH, a message 4 PDCCH, and a message B PDCCH, and the other channels include at least one of the following:

[0602] Other PDCCHs except SIB1 PDCCH;

[0603] Other PDSCHs except SIB1 PDSCH;

[0604] Public PUSCH;

[0605] Dedicated PUCCH.

[0606] Optionally, the performing the first processing or the second processing on the conflicting timeslot includes:

[0607] According to any of the following rules, the first process or the second process is performed on the conflicting time slot:

[0608] Prioritizing the first transmission of the repeated transmission of the common PDCCH;

[0609] Prioritize transmission of high-priority channels;

[0610] In the case of the same priority, the channel with the earlier generation time is given priority.

[0611] Optionally, the transmission resource includes a transmission resource indicated by at least one of the following:

[0612] Transmission resources indicated by system information;

[0613] The transmission resources indicated by SSB;

[0614] The transmission resources indicated by the PDCCH resource configuration table;

[0615] The transmission resources indicated by CORESET;

[0616] The transmission resources indicated by the search space;

[0617] Transmission resources indicated by PDCCH monitoring opportunity;

[0618] The transmission resource indicated by the PRACH resource;

[0619] The transmission resource indicated by the PRACH format;

[0620] The repetition count type indicates the transmission resource.

[0621] Optionally, the transmission resource meets one of the following conditions:

[0622] The time slot in which the first transmission of the repeated transmission of the common PDCCH occurs is an available time slot;

[0623] The time slot where the transmission opportunity of the first transmission of the repeated transmission of the common PDCCH is located is an available time slot;

[0624] The time slot where the common PDCCH is repeatedly transmitted is an available time slot;

[0625] The transmission opportunity of the repeated transmission of the common PDCCH is an available transmission opportunity;

[0626] The time slot where the common PDCCH is repeatedly transmitted is a physical time slot;

[0627] The transmission timing of the repeated transmission of the common PDCCH is a physical transmission timing;

[0628] The time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB;

[0629] The transmission timing of the repeated transmission of the common PDCCH is associated with SSB.

[0630] Optionally, the time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB, including at least one of the following:

[0631] In a case where each transmission of the repeated public PDCCH transmission is quasi-co-located with the same SSB, resources of each transmission of the repeated public PDCCH transmission are associated with a transmission time of the SSB of the same beam;

[0632] In the case where each transmission of the common PDCCH repetition transmission is QCL with different SSBs, resources of each transmission of the common PDCCH repetition transmission are associated with transmission times of the SSBs of different beams.

[0633] Optionally, when the transmission characteristics of different transmissions of the common PDCCH repeated transmission are the same, the multiple transmissions of the common PDCCH repeated transmission and at least one downlink reference signal are QCL, or the demodulation reference signal DMRS antenna port of the common PDCCH repeated transmission and at least one downlink reference signal are QCL;

[0634] or,

[0635] When the transmission characteristics of different transmissions of the public PDCCH repetition are different, the i-th transmission of the public PDCCH repetition and at least one downlink reference signal are QCL, or the DMRS antenna port of the i-th transmission of the public PDCCH repetition and at least one downlink reference signal are QCL, and the value of i is greater than or equal to 1 and less than or equal to the number of repetitions of the public PDCCH.

[0636] Optionally, the downlink reference signal includes at least one of the following:

[0637] The reference signal associated with the repeatedly transmitted PDCCH;

[0638] Reference signal associated with PRACH;

[0639] Reference signal associated with the CORESET where the PDCCH is located;

[0640] a reference signal sent by the serving cell; and

[0641] Reference signal associated with PRACH repetitive transmission;

[0642] The reference signal includes SSB or CSI-RS.

[0643] Optionally, when different transmissions of the common PDCCH repeated transmission have different transmission characteristics, the beams of other transmissions of the common PDCCH repeated transmission include at least one of the following:

[0644] Adding a beam determined by the angle offset to the beam of the transmission closest to the other transmissions in the repeated transmission of the common PDCCH;

[0645] beam indicated by the beam pattern;

[0646] The other transmissions are transmissions different from the i-th transmission.

[0647] Optionally, in the case where there is transmission of different beams in the repeated transmission of the public PDCCH, the different beams are: multiple beams divided from the downlink beam corresponding to the SSB associated with the repeated transmission of the public PDCCH.

[0648] Optionally, a transmission characteristic of the repeated transmission of the common PDCCH is at least partially the same as a transmission characteristic of a downlink reference signal resource corresponding to a PRACH resource used by the terminal.

[0649] Optionally, in the case where the PRACH used by the terminal adopts repeated transmission, the transmission characteristics of the i-th transmission of the public PDCCH repeated transmission are at least partially the same as the transmission characteristics of the i-th transmission of the PRACH, and the value of i is greater than or equal to 1 and less than or equal to min{the maximum number of repetitions of the public PDCCH, the maximum number of repetitions of PRACH}.

[0650] The above-mentioned common PDCCH sending device can improve the coverage performance of the network.

[0651] The PDCCH retransmission processing device in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in the electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or a network-side device.

[0652] The processing device for repeated transmission of PDCCH provided in the embodiment of the present application can implement the various processes implemented in the method embodiment shown in Figure 3 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0653] Optionally, as shown in Figure 6, an embodiment of the present application further provides a communication device 600, including a processor 601 and a memory 602, wherein the memory 602 stores a program or instruction that can be run on the processor 601. For example, when the communication device 600 is a terminal, the program or instruction is executed by the processor 601 to implement the various steps of the embodiment of the method for processing repeated transmission of PDCCH on the terminal side, and can achieve the same technical effect. When the communication device 600 is a network side device, the program or instruction is executed by the processor 601 to implement the various steps of the embodiment of the method for processing repeated transmission of PDCCH on the network side, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0654] An embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the processor is used to determine the transmission resources or transmission characteristics of the repeated transmission of a common PDCCH, and the communication interface is used to receive the repeated transmission of the common PDCCH based on the transmission resources or the transmission characteristics; wherein the common PDCCH includes at least one of the following: system information block SIB1 PDCCH, other system message OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, and PDCCH for scheduling message 3 retransmission.

[0655] As shown in Figure 7, the terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709 and at least some of the components of the processor 710.

[0656] Those skilled in the art will appreciate that terminal 700 may further include a power supply (such as a battery) to power various components. The power supply may be logically connected to processor 710 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The communication device structure shown in FIG7 does not limit the communication device. The communication device may include more or fewer components than shown, or may combine certain components or arrange the components differently, which will not be described in detail here.

[0657] It should be understood that in an embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and the graphics processor 7041 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 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 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.

[0658] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 701 may transmit the data to the processor 710 for processing. Furthermore, the RF unit 701 may send uplink data to the network-side device. Typically, the RF unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0659] The memory 709 can be used to store software programs or instructions and various data. The memory 709 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 709 may include a volatile memory or a non-volatile memory, or the memory 709 may include both volatile and non-volatile memories. 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 709 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0660] Processor 710 may include one or more processing units. Optionally, processor 710 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 710.

[0661] Processor 710 is configured to determine transmission resources or transmission characteristics for repeated transmission of a common PDCCH;

[0662] The radio frequency unit 701 is configured to receive the repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic;

[0663] The public PDCCH includes at least one of the following:

[0664] System information block SIB1 PDCCH, other system messages OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, PDCCH for scheduling message 3 retransmission.

[0665] Optionally, the transmission resource includes at least one of the following:

[0666] Time slot, monitoring opportunity;

[0667] The time slot includes at least one of the following:

[0668] Physical time slots, available time slots;

[0669] The monitoring opportunity includes at least one of the following:

[0670] Physical PDCCH monitoring opportunity, available PDCCH monitoring opportunity.

[0671] Optionally, the physical time slot includes: a continuous physical time slot; or,

[0672] The physical PDCCH monitoring opportunities include: consecutive physical PDCCH monitoring opportunities.

[0673] Optionally, the continuous physical time slots belong to the same search space, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located; or, the continuous physical time slots belong to multiple search spaces, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located;

[0674] or,

[0675] The consecutive physical PDCCH monitoring opportunities belong to the same search space; or, the consecutive physical PDCCH monitoring opportunities belong to different search spaces.

[0676] Optionally, the available time slot satisfies at least one of the following:

[0677] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the synchronization signal block SSB is located;

[0678] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical random access channel PRACH is located;

[0679] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical uplink shared channel PUSCH of message A is located;

[0680] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to other search spaces, and the other search spaces are different from the search space corresponding to the common PDCCH repeated transmission;

[0681] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to another control resource set CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission;

[0682] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where other common PDCCHs are located;

[0683] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a downlink symbol;

[0684] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a flexible symbol.

[0685] Optionally, the available PDCCH monitoring opportunity satisfies at least one of the following:

[0686] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the SSB is located;

[0687] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the PRACH is located;

[0688] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the message A PUSCH is located;

[0689] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other search spaces, and the other search spaces are different from the search spaces corresponding to the common PDCCH repeated transmissions;

[0690] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other control resource sets CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission;

[0691] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols where other common PDCCHs are located;

[0692] The symbol corresponding to the available PDCCH monitoring opportunity is a downlink symbol;

[0693] The symbols corresponding to the available PDCCH monitoring opportunities are flexible symbols.

[0694] Optionally, in a case where the common PDCCH repeated transmission is repeated transmission between time slots, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following:

[0695] The number of the physical time slots and the number of the available time slots;

[0696] or,

[0697] In the case where the common PDCCH repeated transmission is an inter-opportunity repeated transmission, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following:

[0698] The number of physical PDCCH monitoring opportunities and the number of available PDCCH monitoring opportunities.

[0699] Optionally, the processor 710 is further configured to: when the transmission resource includes a conflicting time slot in which repeated transmission of the common PDCCH conflicts with other channels, perform the first processing or the second processing on the conflicting time slot;

[0700] The first processing includes: discarding reception of the common PDCCH repeated transmission in the contention time slot;

[0701] The second processing includes discarding reception of the other channels in the conflict time slot.

[0702] Optionally, performing the first processing or the second processing on the conflicting time slot includes:

[0703] In a first case, the first process is performed on the conflicting time slot, where the first case includes at least one of the following:

[0704] The common PDCCH includes a system information block SIB1 PDCCH, and the other channels include SSBs;

[0705] The common PDCCH includes a message 2 PDCCH, and the other channels include at least one of the following: an SSB, a SIB1 PDCCH, a SIB1 PDSCH, a PRACH, a message A PRACH, and a message A PUSCH;

[0706] The common PDCCH includes a message 4 PDCCH or a message B PDCCH, and the other channels include at least one of the following: an SSB, a SIB1 PDCCH, a SIB1 PDSCH, a PRACH, a message A PRACH, a message A PUSCH, a message 2 PDCCH, a message 2 PDSCH, a message 3, and a PDCCH for scheduling retransmission of message 3;

[0707] The common PDCCH includes a PDCCH for scheduling retransmission of message 3, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3;

[0708] The common PDCCH includes a paging PDCCH, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3, PDCCH for scheduling message 3 retransmission, message 4 PDCCH, message 4 PDSCH, and physical uplink shared channel PUCCH for feedback message 4 hybrid automatic repeat request HARQ;

[0709] or,

[0710] In a second case, the second process is performed on the conflicting time slot, where the second case includes at least one of the following:

[0711] The public PDCCH includes SIB1 PDCCH, and the other channels include at least one of the following: other PDCCH, non-SIB1 PDSCH, PRACH, and public PUSCH;

[0712] The common PDCCH includes at least one of a message 2 PDCCH, a message 4 PDCCH, and a message B PDCCH, and the other channels include at least one of the following:

[0713] Other PDCCHs except SIB1 PDCCH;

[0714] Other PDSCHs except SIB1 PDSCH;

[0715] Public PUSCH;

[0716] Dedicated PUCCH.

[0717] Optionally, the performing the first processing or the second processing on the conflicting timeslot includes:

[0718] According to any of the following rules, the first process or the second process is performed on the conflicting time slot:

[0719] Prioritizing the first transmission of the repeated transmission of the common PDCCH;

[0720] Prioritize transmission of high-priority channels;

[0721] In the case of the same priority, the channel with the earlier generation time is given priority.

[0722] Optionally, the transmission resource includes a transmission resource indicated by at least one of the following:

[0723] Transmission resources indicated by system information;

[0724] The transmission resources indicated by SSB;

[0725] The transmission resources indicated by the PDCCH resource configuration table;

[0726] The transmission resources indicated by CORESET;

[0727] The transmission resources indicated by the search space;

[0728] Transmission resources indicated by PDCCH monitoring opportunity;

[0729] The transmission resource indicated by the PRACH resource;

[0730] The transmission resource indicated by the PRACH format;

[0731] The repetition count type indicates the transmission resource.

[0732] Optionally, the transmission resource meets one of the following conditions:

[0733] The time slot in which the first transmission of the repeated transmission of the common PDCCH occurs is an available time slot;

[0734] The time slot where the transmission opportunity of the first transmission of the repeated transmission of the common PDCCH is located is an available time slot;

[0735] The time slot where the common PDCCH is repeatedly transmitted is an available time slot;

[0736] The transmission opportunity of the repeated transmission of the common PDCCH is an available transmission opportunity;

[0737] The time slot where the common PDCCH is repeatedly transmitted is a physical time slot;

[0738] The transmission timing of the repeated transmission of the common PDCCH is a physical transmission timing;

[0739] The time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB;

[0740] The transmission timing of the repeated transmission of the common PDCCH is associated with SSB.

[0741] Optionally, the time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB, including at least one of the following:

[0742] In a case where each transmission of the repeated public PDCCH transmission is quasi-co-located with the same SSB, resources of each transmission of the repeated public PDCCH transmission are associated with a transmission time of the SSB of the same beam;

[0743] In the case where each transmission of the common PDCCH repetition transmission is QCL with different SSBs, resources of each transmission of the common PDCCH repetition transmission are associated with transmission times of the SSBs of different beams.

[0744] Optionally, when the transmission characteristics of different transmissions of the common PDCCH repeated transmission are the same, the multiple transmissions of the common PDCCH repeated transmission and at least one downlink reference signal are QCL, or the demodulation reference signal DMRS antenna port of the common PDCCH repeated transmission and at least one downlink reference signal are QCL;

[0745] or,

[0746] When the transmission characteristics of different transmissions of the public PDCCH repetition are different, the i-th transmission of the public PDCCH repetition and at least one downlink reference signal are QCL, or the DMRS antenna port of the i-th transmission of the public PDCCH repetition and at least one downlink reference are QCL, and the value of i is greater than or equal to 1 and less than or equal to the number of repetitions of the public PDCCH.

[0747] Optionally, the downlink reference signal includes at least one of the following:

[0748] The reference signal associated with the repeatedly transmitted PDCCH;

[0749] Reference signal associated with PRACH;

[0750] Reference signal associated with the CORESET where the PDCCH is located;

[0751] a reference signal sent by the serving cell; and

[0752] Reference signal associated with PRACH repetitive transmission;

[0753] The reference signal includes SSB or CSI-RS.

[0754] Optionally, when different transmissions of the common PDCCH repeated transmission have different transmission characteristics, the beams of other transmissions of the common PDCCH repeated transmission include at least one of the following:

[0755] Adding a beam determined by the angle offset to the beam of the transmission closest to the other transmissions in the repeated transmission of the common PDCCH;

[0756] beam indicated by the beam pattern;

[0757] The other transmissions are transmissions different from the i-th transmission.

[0758] Optionally, in the case where there is transmission of different beams in the repeated transmission of the public PDCCH, the different beams are: multiple beams divided from the downlink beam corresponding to the SSB associated with the repeated transmission of the public PDCCH.

[0759] Optionally, a transmission characteristic of the repeated transmission of the common PDCCH is at least partially the same as a transmission characteristic of a downlink reference signal resource corresponding to a PRACH resource used by the terminal.

[0760] Optionally, when the PRACH used by the terminal adopts repeated transmission, the transmission characteristics of the i-th transmission of the public PDCCH repeated transmission are at least partially the same as the transmission characteristics of the i-th transmission of the PRACH, and the value of i is greater than or equal to 1 and less than or equal to min{the maximum number of repetitions of the public PDCCH, the maximum number of repetitions of PRACH}.

[0761] The above terminals can improve the coverage performance of the network.

[0762] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0763] An embodiment of the present application also provides a network-side device, including a processor and a communication interface, wherein the processor is used to determine the transmission resources or transmission characteristics of the repeated transmission of the common PDCCH, and the communication interface is used to perform the repeated transmission of the common PDCCH based on the transmission resources or the transmission characteristics; wherein the common PDCCH includes at least one of the following: system information block SIB1 PDCCH, other system message OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, and PDCCH for scheduling message 3 retransmission.

[0764] As shown in Figure 8 , network-side device 800 includes an antenna 801, a radio frequency device 802, a baseband device 803, a processor 804, and a memory 805. Antenna 801 is connected to radio frequency device 802. In the uplink direction, radio frequency device 802 receives information via antenna 801 and sends the received information to baseband device 803 for processing. In the downlink direction, baseband device 803 processes the information to be transmitted and sends it to radio frequency device 802. Radio frequency device 802 processes the received information and then sends it through antenna 801.

[0765] The method executed by the radio access network device in the above embodiment may be implemented in the baseband device 803 , which includes a baseband processor.

[0766] The baseband device 803 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 8, one of which is, for example, a baseband processor, which is connected to the memory 805 through a bus interface to call the program in the memory 805 and execute the network device operations shown in the above method embodiment.

[0767] The radio access network device may further include a network interface 806, which is, for example, a common public radio interface (CPRI).

[0768] Specifically, the network side device 800 of the embodiment of the present application also includes: instructions or programs stored in the memory 805 and can be run on the processor 804. The processor 804 calls the instructions or programs in the memory 805 to execute the methods executed by each module shown in Figure 5 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0769] The processor 804 is configured to determine the transmission resource or transmission characteristics for repeated transmission of the common PDCCH.

[0770] A radio frequency device 802 is configured to perform repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic;

[0771] Optionally, the transmission resource includes at least one of the following:

[0772] Time slot, monitoring opportunity;

[0773] The time slot includes at least one of the following:

[0774] Physical time slots, available time slots;

[0775] The monitoring opportunity includes at least one of the following:

[0776] Physical PDCCH monitoring opportunity, available PDCCH monitoring opportunity.

[0777] Optionally, the physical time slot includes: a continuous physical time slot; or,

[0778] The physical PDCCH monitoring opportunities include: consecutive physical PDCCH monitoring opportunities.

[0779] Optionally, the continuous physical time slots belong to the same search space, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located; or, the continuous physical time slots belong to multiple search spaces, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located;

[0780] or,

[0781] The consecutive physical PDCCH monitoring opportunities belong to the same search space; or, the consecutive physical PDCCH monitoring opportunities belong to different search spaces.

[0782] Optionally, the available time slot satisfies at least one of the following:

[0783] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the synchronization signal block SSB is located;

[0784] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical random access channel PRACH is located;

[0785] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical uplink shared channel PUSCH of message A is located;

[0786] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to other search spaces, and the other search spaces are different from the search space corresponding to the common PDCCH repeated transmission;

[0787] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to another control resource set CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission;

[0788] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where other common PDCCHs are located;

[0789] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a downlink symbol;

[0790] In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a flexible symbol.

[0791] Optionally, the available PDCCH monitoring opportunity satisfies at least one of the following:

[0792] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the SSB is located;

[0793] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the PRACH is located;

[0794] The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the message A PUSCH is located;

[0795] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other search spaces, and the other search spaces are different from the search spaces corresponding to the common PDCCH repeated transmissions;

[0796] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other control resource sets CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission;

[0797] The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols where other common PDCCHs are located;

[0798] The symbol corresponding to the available PDCCH monitoring opportunity is a downlink symbol;

[0799] The symbols corresponding to the available PDCCH monitoring opportunities are flexible symbols.

[0800] Optionally, in a case where the common PDCCH repeated transmission is repeated transmission between time slots, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following:

[0801] The number of the physical time slots and the number of the available time slots;

[0802] or,

[0803] In the case where the common PDCCH repeated transmission is an inter-opportunity repeated transmission, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following:

[0804] The number of physical PDCCH monitoring opportunities and the number of available PDCCH monitoring opportunities.

[0805] Optionally, the processor 804 is further configured to:

[0806] In a case where the transmission resource includes a conflicting time slot in which repeated transmission of the common PDCCH conflicts with other channels, performing the first process or the second process on the conflicting time slot;

[0807] The first processing includes: discarding the common PDCCH repeated transmission in the conflict time slot;

[0808] The second processing includes discarding the other channels in the conflict time slot.

[0809] Optionally, performing the first processing or the second processing on the conflicting time slot includes:

[0810] In a first case, the first process is performed on the conflicting time slot, where the first case includes at least one of the following:

[0811] The common PDCCH includes a system information block SIB1 PDCCH, and the other channels include SSBs;

[0812] The common PDCCH includes a message 2 PDCCH, and the other channels include at least one of the following: an SSB, a SIB1 PDCCH, a SIB1 PDSCH, a PRACH, a message A PRACH, and a message A PUSCH;

[0813] The common PDCCH includes a message 4 PDCCH or a message B PDCCH, and the other channels include at least one of the following: an SSB, a SIB1 PDCCH, a SIB1 PDSCH, a PRACH, a message A PRACH, a message A PUSCH, a message 2 PDCCH, a message 2 PDSCH, a message 3, and a PDCCH for scheduling retransmission of message 3;

[0814] The common PDCCH includes a PDCCH for scheduling retransmission of message 3, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3;

[0815] The common PDCCH includes a paging PDCCH, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3, PDCCH for scheduling message 3 retransmission, message 4 PDCCH, message 4 PDSCH, and physical uplink shared channel PUCCH for feedback message 4 hybrid automatic repeat request HARQ;

[0816] or,

[0817] In a second case, the second process is performed on the conflicting time slot, where the second case includes at least one of the following:

[0818] The public PDCCH includes SIB1 PDCCH, and the other channels include at least one of the following: other PDCCH, non-SIB1 PDSCH, PRACH, and public PUSCH;

[0819] The common PDCCH includes at least one of a message 2 PDCCH, a message 4 PDCCH, and a message B PDCCH, and the other channels include at least one of the following:

[0820] Other PDCCHs except SIB1 PDCCH;

[0821] Other PDSCHs except SIB1 PDSCH;

[0822] Public PUSCH;

[0823] Dedicated PUCCH.

[0824] Optionally, the performing the first processing or the second processing on the conflicting timeslot includes:

[0825] According to any of the following rules, the first process or the second process is performed on the conflicting time slot:

[0826] Prioritizing the first transmission of the repeated transmission of the common PDCCH;

[0827] Prioritize transmission of high-priority channels;

[0828] In the case of the same priority, the channel with the earlier generation time is given priority.

[0829] Optionally, the transmission resource includes a transmission resource indicated by at least one of the following:

[0830] Transmission resources indicated by system information;

[0831] The transmission resources indicated by SSB;

[0832] The transmission resources indicated by the PDCCH resource configuration table;

[0833] The transmission resources indicated by CORESET;

[0834] The transmission resources indicated by the search space;

[0835] Transmission resources indicated by PDCCH monitoring opportunity;

[0836] The transmission resource indicated by the PRACH resource;

[0837] The transmission resource indicated by the PRACH format;

[0838] The repetition count type indicates the transmission resource.

[0839] Optionally, the transmission resource meets one of the following conditions:

[0840] The time slot in which the first transmission of the repeated transmission of the common PDCCH occurs is an available time slot;

[0841] The time slot where the transmission opportunity of the first transmission of the repeated transmission of the common PDCCH is located is an available time slot;

[0842] The time slot where the common PDCCH is repeatedly transmitted is an available time slot;

[0843] The transmission opportunity of the repeated transmission of the common PDCCH is an available transmission opportunity;

[0844] The time slot where the common PDCCH is repeatedly transmitted is a physical time slot;

[0845] The transmission timing of the repeated transmission of the common PDCCH is a physical transmission timing;

[0846] The time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB;

[0847] The transmission timing of the repeated transmission of the common PDCCH is associated with SSB.

[0848] Optionally, the time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB, including at least one of the following:

[0849] In a case where each transmission of the repeated public PDCCH transmission is quasi-co-located with the same SSB, resources of each transmission of the repeated public PDCCH transmission are associated with a transmission time of the SSB of the same beam;

[0850] In the case where each transmission of the common PDCCH repetition transmission is QCL with different SSBs, resources of each transmission of the common PDCCH repetition transmission are associated with transmission times of the SSBs of different beams.

[0851] Optionally, when the transmission characteristics of different transmissions of the common PDCCH repeated transmission are the same, the multiple transmissions of the common PDCCH repeated transmission and at least one downlink reference signal are QCL, or the demodulation reference signal DMRS antenna port of the common PDCCH repeated transmission and at least one downlink reference signal are QCL;

[0852] or,

[0853] When the transmission characteristics of different transmissions of the public PDCCH repetition are different, the i-th transmission of the public PDCCH repetition and at least one downlink reference signal are QCL, or the DMRS antenna port of the i-th transmission of the public PDCCH repetition and at least one downlink reference signal are QCL, and the value of i is greater than or equal to 1 and less than or equal to the number of repetitions of the public PDCCH.

[0854] Optionally, the downlink reference signal includes at least one of the following:

[0855] The reference signal associated with the repeatedly transmitted PDCCH;

[0856] Reference signal associated with PRACH;

[0857] Reference signal associated with the CORESET where the PDCCH is located;

[0858] a reference signal sent by the serving cell; and

[0859] Reference signal associated with PRACH repetitive transmission;

[0860] The reference signal includes SSB or CSI-RS.

[0861] Optionally, when different transmissions of the common PDCCH repeated transmission have different transmission characteristics, the beams of other transmissions of the common PDCCH repeated transmission include at least one of the following:

[0862] Adding a beam determined by the angle offset to the beam of the transmission closest to the other transmissions in the repeated transmission of the common PDCCH;

[0863] beam indicated by the beam pattern;

[0864] The other transmissions are transmissions different from the i-th transmission.

[0865] Optionally, in the case where there is transmission of different beams in the repeated transmission of the public PDCCH, the different beams are: multiple beams divided from the downlink beam corresponding to the SSB associated with the repeated transmission of the public PDCCH.

[0866] Optionally, a transmission characteristic of the repeated transmission of the common PDCCH is at least partially the same as a transmission characteristic of a downlink reference signal resource corresponding to a PRACH resource used by the terminal.

[0867] Optionally, in the case where the PRACH used by the terminal adopts repeated transmission, the transmission characteristics of the i-th transmission of the public PDCCH repeated transmission are at least partially the same as the transmission characteristics of the i-th transmission of the PRACH, and the value of i is greater than or equal to 1 and less than or equal to min{the maximum number of repetitions of the public PDCCH, the maximum number of repetitions of PRACH}.

[0868] The above network-side equipment can improve the coverage performance of the network.

[0869] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned public PDCCH receiving method or public PDCCH sending method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0870] 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.

[0871] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned public PDCCH receiving method or public PDCCH sending method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0872] 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.

[0873] 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 public PDCCH reception method or public PDCCH transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0874] 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 execute the steps of the public PDCCH receiving method provided in the embodiment of the present application, and the network side device can be used to execute the steps of the public PDCCH sending method provided in the embodiment of the present application.

[0875] 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.

[0876] 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.

[0877] 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 receiving a common physical downlink control channel PDCCH, comprising: The terminal determines the transmission resources or transmission characteristics of the common PDCCH repeated transmission; The terminal receives the common PDCCH repeated transmission based on the transmission resource or the transmission characteristic; The public PDCCH includes at least one of the following: System information block SIB1 PDCCH, other system messages OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, and PDCCH for scheduling message 3 retransmission.

2. The method of claim 1, wherein: The transmission resource includes at least one of the following: Time slot, monitoring opportunity; The time slot includes at least one of the following: Physical time slots, available time slots; The monitoring opportunity includes at least one of the following: Physical PDCCH monitoring opportunity, available PDCCH monitoring opportunity.

3. The method of claim 2, wherein: The physical time slots include: continuous physical time slots; or, The physical PDCCH monitoring opportunities include: consecutive physical PDCCH monitoring opportunities.

4. The method of claim 3, wherein: The continuous physical time slots belong to the same search space, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located; or, the continuous physical time slots belong to multiple search spaces, and the continuous physical time slots are physical time slots where the PDCCH monitoring opportunity is located; or, The consecutive physical PDCCH monitoring opportunities belong to the same search space; or, the consecutive physical PDCCH monitoring opportunities belong to different search spaces.

5. The method according to any one of claims 2 to 4, wherein: The available time slot satisfies at least one of the following: In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the synchronization signal block SSB is located; In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical random access channel PRACH is located; In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where the physical uplink shared channel PUSCH of message A is located; In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to other search spaces, and the other search spaces are different from the search spaces corresponding to the common PDCCH repeated transmission; In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol corresponding to other control resource sets CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission; In the available time slot, the symbol where the common PDCCH is repeatedly transmitted does not overlap with the symbol where other common PDCCHs are located; In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a downlink symbol; In the available time slot, the symbol where the common PDCCH is repeatedly transmitted is a flexible symbol.

6. The method according to any one of claims 2 to 5, wherein: The available PDCCH monitoring opportunity satisfies at least one of the following: The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the SSB is located; The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the PRACH is located; The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where the message A PUSCH is located; The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other search spaces, and the other search spaces are different from the search spaces corresponding to the common PDCCH repeated transmissions; The symbols corresponding to the available PDCCH monitoring opportunities do not overlap with symbols corresponding to other control resource sets CORESET, and the other CORESET is different from the CORESET corresponding to the common PDCCH repeated transmission; The symbol corresponding to the available PDCCH monitoring opportunity does not overlap with the symbol where other common PDCCHs are located; The symbol corresponding to the available PDCCH monitoring opportunity is a downlink symbol; The symbols corresponding to the available PDCCH monitoring opportunities are flexible symbols.

7. The method according to any one of claims 2 to 6, wherein: In the case where the common PDCCH repetitive transmission is a repetitive transmission between time slots, the count of the number of repetitions of the common PDCCH repetitive transmission includes at least one of the following: The number of the physical time slots and the number of the available time slots; or, In the case where the common PDCCH repeated transmission is repeated transmission between opportunities, the count of the number of repetitions of the common PDCCH repeated transmission includes at least one of the following: The number of the physical PDCCH monitoring opportunities and the number of the available PDCCH monitoring opportunities.

8. The method according to any one of claims 1 to 7, wherein: Also includes: In a case where the transmission resource includes a conflicting time slot in which repeated transmission of the common PDCCH conflicts with other channels, performing the first processing or the second processing on the conflicting time slot; The first processing includes: discarding reception of the common PDCCH repeated transmission in the conflict time slot; The second process includes discarding reception of the other channels in the conflict time slot.

9. The method of claim 8, wherein: Performing a first process or a second process on the conflicting time slot includes: In a first case, the first processing is performed for the conflicting time slot, and the first case includes at least one of the following: The common PDCCH includes a system information block SIB1 PDCCH, and the other channels include SSB; The common PDCCH includes a message 2 PDCCH, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH; The common PDCCH includes a message 4 PDCCH or a message B PDCCH, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3, and a PDCCH for scheduling retransmission of message 3; The common PDCCH includes a PDCCH for scheduling retransmission of message 3, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3; The common PDCCH includes a paging PDCCH, and the other channels include at least one of the following: SSB, SIB1 PDCCH, SIB1 PDSCH, PRACH, message A PRACH, message A PUSCH, message 2 PDCCH, message 2 PDSCH, message 3, PDCCH for scheduling message 3 retransmission, message 4 PDCCH, message 4 PDSCH, and physical uplink shared channel PUCCH for feedback message 4 hybrid automatic repeat request HARQ; or, In a second case, the second process is performed for the conflicting time slot, and the second case includes at least one of the following: The public PDCCH includes SIB1 PDCCH, and the other channels include at least one of the following: other PDCCH, non-SIB1 PDSCH, PRACH, and public PUSCH; The common PDCCH includes at least one of message 2 PDCCH, message 4 PDCCH, and message B PDCCH, and the other channels include at least one of the following: Other PDCCHs except SIB1 PDCCH; Other PDSCHs except SIB1 PDSCH; Public PUSCH; Dedicated PUCCH.

10. The method of claim 8, wherein: The performing the first processing or the second processing on the conflicting time slot includes: According to any of the following rules, the first process or the second process is performed on the conflicting time slot: Prioritizing the first transmission of the common PDCCH repeated transmission; Prioritize transmission of high priority channels; In case of the same priority, the channel with earlier generation time will be given priority.

11. The method according to any one of claims 1 to 10, wherein: The transmission resource includes a transmission resource indicated by at least one of the following: transmission resources indicated by system information; The transmission resource indicated by SSB; The transmission resources indicated by the PDCCH resource configuration table; The transmission resources indicated by CORESET; The transmission resources indicated by the search space; The transmission resources indicated by the PDCCH monitoring opportunity; The transmission resource indicated by the PRACH resource; The transmission resource indicated by the PRACH format; The repetition count type indicates the transmission resource.

12. The method according to any one of claims 1 to 11, wherein: The transmission resource meets one of the following conditions: The time slot where the first transmission of the common PDCCH repeated transmission occurs is an available time slot; The time slot where the transmission timing of the first transmission of the repeated transmission of the common PDCCH is located is an available time slot; The time slot where the common PDCCH is repeatedly transmitted is an available time slot; The transmission timing of the repeated transmission of the common PDCCH is an available transmission timing; The time slot where the common PDCCH is repeatedly transmitted is a physical time slot; The transmission timing of the repeated transmission of the common PDCCH is a physical transmission timing; The time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB; The transmission timing of the repeated transmission of the common PDCCH is SSB associated.

13. The method of claim 12, wherein: The time slot in which the common PDCCH is repeatedly transmitted is associated with the SSB, including at least one of the following: In the case where each transmission of the common PDCCH repetitive transmission is quasi co-located QCL with the same SSB, the resource of each transmission of the common PDCCH repetitive transmission is associated with the transmission time of the SSB of the same beam; In the case where each transmission of the common PDCCH repetition transmission is QCL with different SSBs, resources of each transmission of the common PDCCH repetition transmission are associated with transmission time of the SSBs of different beams.

14. The method according to any one of claims 1 to 13, wherein: When the transmission characteristics of different transmissions of the common PDCCH repeated transmission are the same, the multiple transmissions of the common PDCCH repeated transmission and at least one downlink reference signal are QCL, or the demodulation reference signal DMRS antenna port of the common PDCCH repeated transmission and at least one downlink reference signal are QCL; or, When the transmission characteristics of different transmissions of the common PDCCH repetition are different, the i-th transmission of the common PDCCH repetition and at least one downlink reference signal are QCL, or the DMRS antenna port of the i-th transmission of the common PDCCH repetition and at least one downlink reference signal are QCL, and the value of i is greater than or equal to 1 and less than or equal to the number of repetitions of the common PDCCH.

15. The method of claim 14, wherein: The downlink reference signal includes at least one of the following: The reference signal associated with the repeatedly transmitted PDCCH; Reference signal associated with PRACH; The reference signal associated with the CORESET where the PDCCH is located; A reference signal sent by the serving cell; as well as, The reference signal associated with the PRACH repetitive transmission; The reference signal includes SSB or channel state information reference signal CSI-RS.

16. The method according to any one of claims 14 to 15, wherein: In the case where the transmission characteristics of different transmissions of the common PDCCH repeated transmission are different, the beams of other transmissions of the common PDCCH repeated transmission include at least one of the following: Adding a beam determined by an angle offset to a beam of a transmission closest to the other transmissions in the repeated transmission of the common PDCCH; beam pattern indicating the beam; The other transmissions are transmissions different from the i-th transmission.

17. The method according to any one of claims 14 to 16, wherein: In the case where the common PDCCH repeated transmission has transmissions in different beams, the different beams are: multiple beams divided from a downlink beam corresponding to an SSB associated with the common PDCCH repeated transmission.

18. The method according to any one of claims 1 to 17, wherein: The transmission characteristic of the repeated transmission of the common PDCCH is at least partially the same as the transmission characteristic of the downlink reference signal resource corresponding to the PRACH resource used by the terminal.

19. The method according to any one of claims 1 to 18, wherein: In the case where the PRACH used by the terminal adopts repeated transmission, the transmission characteristics of the i-th transmission of the common PDCCH repeated transmission are at least partially the same as the transmission characteristics of the i-th transmission of the PRACH, and the value of i is greater than or equal to 1 and less than or equal to min{the maximum number of repetitions of the common PDCCH, the maximum number of repetitions of the PRACH}.

20. A method for transmitting a common physical downlink control channel PDCCH, comprising: The network side device determines the transmission resources or transmission characteristics of the common PDCCH repeated transmission; The network side device performs repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic; The public PDCCH includes at least one of the following: System information block SIB1 PDCCH, other system messages OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, and PDCCH for scheduling message 3 retransmission.

21. The method of claim 20, wherein: The transmission resource includes at least one of the following: Time slot, monitoring opportunity; The time slot includes at least one of the following: Physical time slots, available time slots; The monitoring opportunity includes at least one of the following: Physical PDCCH monitoring opportunity, available PDCCH monitoring opportunity.

22. The method of claim 20 or 21, wherein: Also includes: In a case where the transmission resource includes a conflicting time slot in which repeated transmission of the common PDCCH conflicts with other channels, performing the first processing or the second processing on the conflicting time slot; The first processing includes: discarding the common PDCCH repeated transmission in the conflict time slot; The second process includes discarding the other channels in the conflict time slot.

23. The method of any one of claims 20 to 22, wherein: The transmission resource includes a transmission resource indicated by at least one of the following: transmission resources indicated by system information; The transmission resource indicated by SSB; The transmission resources indicated by the PDCCH resource configuration table; The transmission resources indicated by CORESET; The transmission resources indicated by the search space; The transmission resources indicated by the PDCCH monitoring opportunity; The transmission resource indicated by the PRACH resource; The transmission resource indicated by the PRACH format; The repetition count type indicates the transmission resource.

24. The method of any one of claims 20 to 23, wherein: The transmission resource meets one of the following conditions: The time slot where the first transmission of the common PDCCH repeated transmission occurs is an available time slot; The time slot where the transmission timing of the first transmission of the repeated transmission of the common PDCCH is located is an available time slot; The time slot where the common PDCCH is repeatedly transmitted is an available time slot; The transmission timing of the repeated transmission of the common PDCCH is an available transmission timing; The time slot where the common PDCCH is repeatedly transmitted is a physical time slot; The transmission timing of the repeated transmission of the common PDCCH is a physical transmission timing; The resources where the common PDCCH is repeatedly transmitted are associated with the SSB.

25. The method of any one of claims 20 to 24, wherein: When the transmission characteristics of different transmissions of the common PDCCH repeated transmission are the same, the multiple transmissions of the common PDCCH repeated transmission and at least one downlink reference signal are QCL, or the demodulation reference signal DMRS antenna port of the common PDCCH repeated transmission and at least one downlink reference signal are QCL; or, When the transmission characteristics of different transmissions of the common PDCCH repetition are different, the i-th transmission of the common PDCCH repetition and at least one downlink reference signal are QCL, or the DMRS antenna port of the i-th transmission of the common PDCCH repetition and at least one downlink reference signal are QCL, and the value of i is greater than or equal to 1 and less than or equal to the number of repetitions of the common PDCCH.

26. A common physical downlink control channel PDCCH receiving device, comprising: A determination module, used to determine the transmission resources or transmission characteristics of the common PDCCH repeated transmission; A receiving module, configured to receive the common PDCCH repeated transmission based on the transmission resource or the transmission characteristic; The public PDCCH includes at least one of the following: System information block SIB1 PDCCH, other system messages OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, and PDCCH for scheduling message 3 retransmission.

27. A common physical downlink control channel PDCCH sending device, comprising: A determination module, used to determine the transmission resources or transmission characteristics of the common PDCCH repeated transmission; An execution module, configured to execute repeated transmission of the common PDCCH based on the transmission resource or the transmission characteristic; The public PDCCH includes at least one of the following: System information block SIB1 PDCCH, other system messages OSI PDCCH, message 2 PDCCH, message 4 PDCCH, message B PDCCH, paging PDCCH, and PDCCH for scheduling message 3 retransmission.

28. 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 common PDCCH reception method according to any one of claims 1 to 19 are implemented.

29. A network side device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the common PDCCH sending method as described in any one of claims 20 to 25 are implemented.

30. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the public PDCCH receiving method as described in any one of claims 1 to 19, or implements the steps of the public PDCCH sending method as described in any one of claims 20 to 25.

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