Transmission method of physical downlink control channel, terminal and network side device

Abstract

The application discloses a physical downlink control channel transmission method, a terminal and a network side device, and belongs to the technical field of wireless communication. The physical downlink control channel transmission method of the application embodiment comprises the following steps: a network side device acquires the mapping mode of a control channel element (CCE) and a resource element group (REG) of a first target CORESET, wherein the mapping mode of the CCE and the REG is a non-interleaved mapping mode; and the network side device transmits a first target PDCCH on the resource corresponding to the first target CORESET in the non-interleaved mapping mode of the CCE and the REG.

Description

Technical Field

[0001] This application belongs to the field of wireless communication technology, specifically relating to a transmission method, terminal, and network-side equipment for a physical downlink control channel. Background Technology

[0002] The minimum system bandwidth required for existing new radio (NR) systems in band 1 (FR1, i.e., 410MHz to 7125MHz) is 5MHz. This system bandwidth of 5MHz is the minimum bandwidth required in the frequency domain to support the synchronization signal, broadcast channel, and control resource set (CORESET) with ID 0 (i.e., CORESET#0) required by the terminal during initial access.

[0003] Future NR systems will evolve further, with plans to deploy in system bandwidths of less than 5MHz. For example, NR systems will be used on some dedicated spectrum in Frequency Division Duplex (FDD) to support railway communications, smart grid control, and public safety. This dedicated spectrum is deployed in the FDD sub-1GHz range, with bandwidths within 3-5MHz (e.g., 3MHz or 3.6MHz). Therefore, the system bandwidth may not be sufficient to support certain core frequency domain resources.

[0004] On the other hand, to meet the needs of vertical industries, in application scenarios such as industrial wireless sensors, video surveillance, and wearable devices, terminals need to reduce complexity in terms of the number of receiving antennas, the number of transmitting antennas, supported bandwidth, and the time and ability of the terminal to process data and signals. Such terminals can be called low-capability terminals (RedcuedCap UE, or simply RedCap UE or RedCap / redcap). Regarding bandwidth, the maximum bandwidth currently supported by redcap UEs on FR1 is 20MHz, and may be 5MHz-10MHz in subsequent systems. Therefore, the frequency domain resources of some cores may exceed the maximum bandwidth supported by the terminal.

[0005] There is currently no clear technical solution on how network-side devices and terminals should transmit the Physical Downlink Control Channel (PDCCH) to accommodate the two situations mentioned above. Summary of the Invention

[0006] This application provides a method for transmitting a physical downlink control channel, a terminal, and a network-side device to adapt to situations where the system bandwidth may not be able to support the frequency domain resources of certain cores or the frequency domain resources of certain cores may exceed the maximum bandwidth that the terminal can support.

[0007] In a first aspect, a method for transmitting a physical downlink control channel is provided, comprising: a network-side device acquiring a non-interleaved mapping method for the control channel element (CCE) and resource element group (REG) of a first target CORESET; the network-side device transmitting a first target PDCCH on the resource corresponding to the first target CORESET using the non-interleaved mapping method of CCE and REG.

[0008] Secondly, a method for transmitting a physical downlink control channel is provided, comprising: a network-side device configuring target parameters for a second target CORESET, wherein the target parameters include a first parameter, the first parameter being a reference parameter for a terminal to determine whether to receive the second target PDCCH; and the network-side device transmitting the second target PDCCH on the resources of the second target CORESET.

[0009] Thirdly, a method for transmitting a physical downlink control channel is provided, comprising: a network-side device selecting at least one CCE aggregation level from multiple target CCE aggregation levels of a target Common Search Space (CSS) set, wherein the target CSS set is configured via searchSpaceSIB1, and the multiple target CCE aggregation levels include: level 1 and level 2; the network-side device transmitting a third target PDCCH on resources of a third target CORESET at the selected at least one CCE aggregation level; wherein the third target CORESET is associated with the target CSS set.

[0010] Fourthly, a method for receiving a physical downlink control channel is provided, comprising: a terminal acquiring a mapping method of CCE and REG of a first target CORESET, wherein the mapping method of CCE and REG includes a non-interleaved mapping method; and, under the condition of satisfying a first target, the terminal receiving and demodulating the resource uplink transmission of the first target PDCCH corresponding to the first target CORESET using the mapping method of CCE and REG as a non-interleaved mapping method.

[0011] Fifthly, a method for receiving a physical downlink control channel is provided, comprising: a terminal acquiring target parameters of a second target CORESET, wherein the target parameters include: a first parameter, the first parameter being a reference parameter for the terminal to determine whether to receive a second target PDCCH; and the terminal determining whether to receive the second target PDCCH transmitted on the resources of the second target CORESET based on the first parameter.

[0012] Sixthly, a method for receiving a physical downlink control channel is provided, comprising: a terminal performing blind detection on a third target PDCCH according to multiple target CCE aggregation levels of a target CSS set, wherein the third target PDCCH is transmitted on resources of a third target CORESET, the target CSS set is configured through searchSpaceSIB1, the third target CORESET is associated with the target CSS set, and the multiple target CCE aggregation levels include: level 1 and level 2.

[0013] A seventh aspect provides a method for receiving a physical downlink control channel, comprising: when a fourth target PDCCH exceeds a target bandwidth, a terminal receives and demodulates a first portion of the fourth target PDCCH, and abandons receiving or demodulating a second portion of the fourth target PDCCH, wherein the first portion is the portion of the fourth target PDCCH transmitted on the target bandwidth, and the second portion is the portion of the fourth target PDCCH transmitted on frequency domain resources exceeding the target bandwidth, the target bandwidth including: the bandwidth of frequency domain units currently deployed in the communication system, and / or, the maximum bandwidth that the terminal can support, the frequency domain unit including one of the following: cell, carrier, frequency band, and bandwidth portion (BWP).

[0014] Eighthly, a transmission apparatus for a physical downlink control channel is provided, comprising: a first acquisition module, configured to acquire a mapping method between CCE and REG of a first target CORESET, wherein the mapping method between CCE and REG is a non-interleaved mapping method; and a first transmission module, configured to transmit a first target physical downlink control channel PDCCH on resources corresponding to the first target CORESET using a non-interleaved mapping method between CCE and REG.

[0015] A ninth aspect provides a transmission apparatus for a physical downlink control channel, comprising: a second configuration module configured to configure target parameters for a second target CORESET, wherein the target parameters include a first parameter, the first parameter being a reference parameter for a terminal to determine whether to receive a second target PDCCH; and a second transmission module configured to transmit the second target PDCCH on resources of the second target CORESET.

[0016] In a tenth aspect, a transmission apparatus for a physical downlink control channel is provided, comprising: a selection module for selecting at least one CCE aggregation level from a plurality of target CCE aggregation levels of a target CSS set, wherein the target CSS set is configured via searchSpaceSIB1, and the plurality of target CCE aggregation levels include: level 1 and level 2; and a third transmission module for transmitting a third target PDCCH on resources of a third target CORESET at the selected at least one CCE aggregation level; wherein the third target CORESET is associated with the target CSS set.

[0017] Eleventhly, a receiving device for a physical downlink control channel is provided, comprising: a first acquisition module, configured to acquire the mapping method of CCE and REG of a first target CORESET, wherein the mapping method of CCE and REG includes: a non-interleaved mapping method; and a first receiving module, configured to, under the condition of satisfying a first target, receive and demodulate the resource uplink transmission of the first target PDCCH corresponding to the first target CORESET with the mapping method of CCE and REG as a non-interleaved mapping method.

[0018] In a twelfth aspect, a receiving apparatus for a physical downlink control channel is provided, comprising: a second acquisition module, configured to acquire target parameters of a second target CORESET, wherein the target parameters include: a first parameter, the first parameter being a reference parameter for the terminal to determine whether to receive a second target PDCCH; and a second receiving module, configured to determine, based on the first parameter, whether to receive the second target PDCCH transmitted on the resources of the second target CORESET.

[0019] In a thirteenth aspect, a receiving apparatus for a physical downlink control channel is provided, comprising: a third acquisition module, configured to acquire multiple target CCE aggregation levels of a target CSS set, wherein the target CSS set is configured via searchSpaceSIB1, and the multiple target CCE aggregation levels include: level 1 and level 2; and a third receiving module, configured to perform blind detection on a third target PDCCH according to the multiple target CCE aggregation levels, wherein the third target PDCCH is transmitted on resources of a third target CORESET, and the third target CORESET is associated with the target CSS set.

[0020] Fourteenth aspect, a receiving apparatus for a physical downlink control channel is provided, comprising: a determining module, configured to determine that a fourth target PDCCH exceeds a target bandwidth, wherein the target bandwidth includes: the bandwidth of a frequency domain unit currently deployed in the communication system, and / or, the maximum bandwidth supported by the terminal, wherein the frequency domain unit includes one of: cell, carrier, frequency band, and BWP; and a fourth receiving module, configured to, when the fourth target PDCCH exceeds the target bandwidth, receive and demodulate a first portion of the fourth target PDCCH, and abandon receiving or abandoning demodulation of a second portion of the fourth target PDCCH, wherein the first portion is the portion of the fourth target PDCCH transmitted on the target bandwidth, and the second portion is the portion of the fourth target PDCCH transmitted on frequency domain resources exceeding the target bandwidth.

[0021] In a fifteenth aspect, a terminal is provided, the terminal including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein when the program or instructions are executed by the processor, they implement the steps of the method as described in the fourth aspect, or the steps of the method as described in the fifth aspect, or the steps of the method as described in the sixth aspect, or the steps of the method as described in the seventh aspect.

[0022] In a sixteenth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to implement the steps of the method described in the fourth aspect, or the steps of the method described in the fifth aspect, or the steps of the method described in the sixth aspect, or the steps of the method described in the seventh aspect, and the communication interface is configured to communicate with a network-side device.

[0023] In a seventeenth aspect, a network-side device is provided, the network-side device including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein when the program or instructions are executed by the processor, they implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0024] Eighteenthly, a network-side device is provided, including a processor and a communication interface, wherein the processor is configured to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect, and the communication interface is configured to communicate with a terminal.

[0025] In a nineteenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect, or the steps of the method described in the fourth aspect, or the steps of the method described in the fifth aspect, or the steps of the method described in the sixth aspect, or the steps of the method described in the seventh aspect.

[0026] In a twentieth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect, or the steps of the method described in the fourth aspect, or the steps of the method described in the fifth aspect, or the steps of the method described in the sixth aspect, or the steps of the method described in the seventh aspect.

[0027] In a twenty-first aspect, a computer program / program product is provided, the computer program / program product being stored in a non-transient storage medium, the program / program product being executed by at least one processor to implement the steps of the method as described in the first aspect, or the steps of the method as described in the second aspect, or the steps of the method as described in the third aspect, or the steps of the method as described in the fourth aspect, or the steps of the method as described in the fifth aspect, or the steps of the method as described in the sixth aspect, or the steps of the method as described in the seventh aspect.

[0028] In this embodiment of the application, on the one hand, the network-side device obtains the mapping method of CCE and REG of the first target CORESET. The mapping method of CCE and REG is a non-interleaved mapping method. The network-side device transmits the first target PDCCH on the resources corresponding to the first target CORESET in a non-interleaved mapping method. This can control that all or most of the CCEs constituting the first target PDCCH are within the receiving bandwidth of the terminal, thus ensuring the demodulation performance of the first target PDCCH.

[0029] On the other hand, the network-side device can also configure target parameters for the second target CORESET. These target parameters include reference parameters for the terminal to determine whether to receive the second target PDCCH. The network-side device can transmit the second target PDCCH on the resources of the second target CORESET based on these reference parameters, thereby controlling the receiving terminal of the second target PDCCH to receive the second target PDCCH.

[0030] Another aspect is that network-side devices can extend the CCE aggregation level of the CSS set configured in searchSpaceSIB1. When using the CCE aggregation levels of level 1 and level 2, the frequency domain resources occupied by the third target PDCCH transmitted on the resources of the third target CORESET associated with the CSS set can be reduced, so that all or most of the CCEs constituting the third target PDCCH are within the receiving bandwidth of the terminal.

[0031] In addition, embodiments of this application also provide how a terminal can receive a PDCCH when the fourth target PDCCH exceeds the bandwidth of the frequency domain unit currently deployed in the communication system and / or the maximum bandwidth that the terminal can support, so that the terminal can decide whether to receive the PDCCH demodulated on CORESET to reduce unnecessary complexity for the terminal. Attached Figure Description

[0032] Figure 1 This diagram illustrates a wireless communication system to which embodiments of this application may be applied;

[0033] Figure 2 This illustration shows a flowchart of a transmission method for a physical downlink control channel provided in an embodiment of this application;

[0034] Figure 3a A schematic diagram of a CCE to REG mapping is shown;

[0035] Figure 3b This illustrates another CCE to REG mapping diagram;

[0036] Figure 4 This illustration shows a flowchart of a method for receiving a physical downlink control channel according to an embodiment of this application;

[0037] Figure 5 This illustration shows another flowchart of the transmission method for the physical downlink control channel provided in an embodiment of this application;

[0038] Figure 6 This illustration shows another flowchart of the method for receiving the physical downlink control channel provided in an embodiment of this application;

[0039] Figure 7 This illustration shows another flowchart of a method for transmitting a physical downlink control channel according to an embodiment of this application;

[0040] Figure 8 This illustration shows yet another flowchart of a method for receiving a physical downlink control channel provided in an embodiment of this application;

[0041] Figure 9 This illustration shows yet another flowchart of a method for receiving a physical downlink control channel provided in an embodiment of this application;

[0042] Figure 10 This illustration shows a structural schematic diagram of a transmission apparatus for a physical downlink control channel provided in an embodiment of this application;

[0043] Figure 11 This illustration shows another structural diagram of the transmission apparatus for the physical downlink control channel provided in an embodiment of this application;

[0044] Figure 12 This illustration shows yet another structural diagram of the transmission apparatus for the physical downlink control channel provided in an embodiment of this application;

[0045] Figure 13 This illustration shows a schematic diagram of a receiving device for a physical downlink control channel provided in an embodiment of this application.

[0046] Figure 14 This illustration shows another structural diagram of the receiving device for the physical downlink control channel provided in an embodiment of this application;

[0047] Figure 15 This illustration shows yet another structural diagram of a receiving apparatus for a physical downlink control channel provided in an embodiment of this application;

[0048] Figure 16 This illustration shows yet another structural diagram of a receiving apparatus for a physical downlink control channel provided in an embodiment of this application;

[0049] Figure 17 This illustration shows a structural diagram of a communication device provided in an embodiment of this application;

[0050] Figure 18 This illustration shows a hardware structure diagram of a terminal provided in an embodiment of this application;

[0051] Figure 19 This diagram illustrates the hardware structure of a network-side device according to an embodiment of this application. Detailed Implementation

[0052] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0053] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0054] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, 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), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description; however, these technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0055] Figure 1This diagram illustrates a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or user equipment (UE). The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), etc. Wearable devices include smartwatches, wristbands, headphones, glasses, etc. It should be noted that this application does not limit the specific type of terminal 11. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0056] The transmission scheme of the physical downlink control channel provided in this application will be described in detail below with reference to the accompanying drawings, through some embodiments and application scenarios.

[0057] Figure 2 This diagram illustrates a flowchart of a physical downlink control channel transmission method according to an embodiment of this application. This method 200 can be executed by a network-side device. In other words, the method can be executed by software or hardware installed on the network-side device. Figure 2 As shown, the method may include the following steps.

[0058] S210, the network-side device obtains the mapping method of CCE and REG of the first target CORESET, wherein the mapping method of CCE and REG is a non-interleaved mapping method.

[0059] S212, the network-side device transmits the first target PDCCH on the resource corresponding to the first target CORESET using a non-interleaved mapping method for CCE and REG.

[0060] In this embodiment of the application, in order to ensure that all or most of the CCEs of the first target PDCCH transmitted on the resource corresponding to the first target CORESET are within the UE's receiving bandwidth, the mapping method (CCE-REG-MappingType) of the CCEs and REGs of the first target CORESET can be set to a mapping method that only supports non-interleaved mapping.

[0061] For example, as shown in Figure 3(a), if CORESET#0 in 3MHz uses interleaved CCE to REG mapping, CCE#0 will exceed the UE's receiving bandwidth, and the demodulation performance of PDCCH will degrade due to the lack of information carried on CCE#0; while as shown in Figure 3(b), using non-interleaved CCE to REG mapping can better control that all or most of the CCEs constituting PDCCH are within the UE's receiving bandwidth, thus ensuring the demodulation performance of PDCCH.

[0062] Optionally, in this embodiment, the first target CORESET is associated with at least one of the following search space (SS) sets:

[0063] (1) The common search space (CSS) set of PDCCH of type 0, i.e., the Type 0-PDCCH CSS set;

[0064] (2) The CSS set of PDCCH of type 0A, i.e., Type0A-PDCCH CSS set;

[0065] (3) The CSS set of type 1 PDCCH, i.e., Type 1-PDCCH CSS set;

[0066] (4) The CSS set of type 2 PDCCH, i.e., the Type 2-PDCCH CSS set;

[0067] (5) Type 3-PDCCH CSS set;

[0068] (6) UE-specific Search Space (USS) set.

[0069] The CCE-REG-MappingType of the first target CORESET can be configured by the network-side device or specified by the protocol.

[0070] For example, network-side devices can be configured or protocols can specify that, under the condition that the first target condition is met, the mapping method between CCE and REG of the first target CORESET is a non-interleaved mapping method.

[0071] Optionally, the first target condition may include: the frequency domain resources occupied by the first target CORESET exceed the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and BWP.

[0072] For example, the CCE-REG-MappingType of the first target CORESET only supports non-interleaved mapping methods, which are only applicable to the bandwidth of the cell / carrier / frequency band / BWP currently deployed by NR, or the maximum bandwidth that the terminal can support cannot carry all the frequency domain resources of the first target CORESET.

[0073] In this embodiment, the first target CORESET can be CORESET#0. For example, the first target CORESET can be associated with at least one of the search space sets in (1)-(4) above. For example, the network-side device can be configured or the protocol can specify that CCE-REG-MappingType only supports non-interleaved mapping methods that are only applicable to CORESET#0 and the bandwidth on the cell / carrier / frequency band / BWP of the currently deployed NR or the maximum bandwidth that the terminal can support cannot carry all frequency domain resources of CORESET#0.

[0074] For example, CORESET#0 can be configured as follows using ControlResourceSetZero IE:

[0075] -CORESET's RB count The number of signs of CORESET It can be defined according to relevant technologies;

[0076] -exist If the bandwidth exceeds the capacity of the cell or the UE, the UE can use non-interleaved mapping; otherwise, the UE can use interleaved mapping.

[0077] -L = 6;

[0078] -R=2;

[0079] -

[0080] - When CORESET#0 is configured by MIB or SIB1, the UE can use the normal cyclic prefix;

[0081] -UE can use the same precoding in REG bundles.

[0082] Of course, it is not limited to this. The first target CORESET can also be any other CORESET besides CORESET#0, for example, a CORESET associated with the search space set of (5) and / or (6) above.

[0083] In this embodiment, optionally, the time-domain resources occupied by the first target CORESET include 3 Orthogonal Frequency Division Multiplexing (OFDM) symbols, or the time-domain resources of the first target CORESET include 6 OFDM symbols. In this optional implementation, the time-domain resources occupied by the first target CORESET can be increased, thereby ensuring the capacity of the first target PDCCH transmitted on the resources of the first target CORESET.

[0084] In one possible implementation, the first target CORESET is located on the terminal's initial BWP. That is, in this embodiment, the CCE-REG-MappingType only supports non-interleaved mapping on the terminal's initial BWP. For example, during the initial access process of the terminal, the network-side device uses a non-interleaved mapping method from CCE to REG when transmitting the PDCCH.

[0085] In this embodiment of the application, the network-side device configures the mapping method of CCE and REG of the first target CORESET as a non-interleaved mapping method, and transmits the first target PDCCH on the resource corresponding to the first target CORESET in a non-interleaved mapping method. This can control that all or most of the CCEs constituting the first target PDCCH are within the receiving bandwidth of the terminal, thus ensuring the demodulation performance of the first target PDCCH.

[0086] Figure 4 This diagram illustrates a flowchart of a method for receiving a physical downlink control channel according to an embodiment of this application. This method 400 can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal. Figure 4 As shown, the method may include the following steps.

[0087] S410, the terminal obtains the mapping method of CCE and REG of the first target CORESET, wherein the mapping method of CCE and REG includes: non-interleaved mapping method;

[0088] S412, when the first target condition is met, the terminal receives and demodulates the resource corresponding to the first target CORESET and transmits the first target PDCCH on the non-interleaved mapping method of CCE and REG.

[0089] The PDCCH receiving method in this embodiment corresponds to method 200. The network-side device can transmit the first target PDCCH in the manner described in method 200. For details, please refer to the relevant description in method 200.

[0090] In the embodiments of this application, the first target CORESET and the first target PDCCH are the same as the first target CORESET and the first target PDCCH in method 200, and for details, please refer to the description in method 200.

[0091] In an optional embodiment of this application, the first target condition may include: the frequency domain resources occupied by the first target CORESET exceed the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, and the frequency domain units include one of the following: cell, carrier, frequency band, and BWP. The first target condition in this optional embodiment is the same as the first target condition in method 200, and can be found in the description of method 200 for details.

[0092] Optionally, the first target CORESET is located on the initial BWP of the terminal. That is, during initial access, the terminal can receive and demodulate the first target PDCCH using a non-interleaved mapping method, provided that the first target condition is met.

[0093] Optionally, the mapping method between CCE and REG of the first target CORESET is specified by the network-side device configuration or protocol.

[0094] Figure 5 This diagram illustrates another flowchart of a physical downlink control channel transmission method according to an embodiment of this application. This method 500 can be executed by a network-side device. In other words, the method can be executed by software or hardware installed on the network-side device. Figure 5 As shown, the method may include the following steps.

[0095] S510, the network-side device configures target parameters for the second target CORESET, wherein the target parameters include a first parameter, which is a reference parameter for the terminal to determine whether to receive the second target PDCCH.

[0096] S512, the network-side device transmits the second target PDCCH on the resources of the second target CORESET.

[0097] The network-side device can also configure target parameters for the second target CORESET. These target parameters include reference parameters for the terminal to determine whether to receive the second target PDCCH. Based on these reference parameters, the network-side device can control the transmission of the second target PDCCH on the resources of the second target CORESET, thereby controlling the receiving terminal of the second target PDCCH to receive the second target PDCCH.

[0098] In one possible implementation, the first parameter includes a maximum coding rate, wherein the maximum coding rate instructs the terminal to abandon receiving or demodulating the second target PDCCH if the target coding rate of the second target PDCCH is greater than or equal to the maximum coding rate, and to receive and demodulate the second target PDCCH if the target coding rate of the second target PDCCH is less than the maximum coding rate. That is, in this possible implementation, if the actual coding rate of transmitting the second target PDCCH (i.e., the target coding rate) is less than the maximum coding rate, the terminal is instructed to receive and demodulate the second target PDCCH; if the actual coding rate of transmitting the second target PDCCH is greater than or equal to the maximum coding rate, the terminal is instructed to abandon receiving or demodulating the second target PDCCH. The network-side device can control the actual coding rate of transmitting the second target PDCCH based on the maximum coding rate, thereby controlling the terminal to receive the second target PDCCH.

[0099] For example, the first parameter could be the maximum coding rate of the received PDCCH, denoted as C_rmax. When the actual coding rate of the PDCCH is greater than (or greater than) C_rmax, the terminal will give up receiving / demodulating the PDCCH.

[0100] In one possible implementation, the first parameter includes a first number, wherein the first number instructs the terminal to receive and demodulate the second target PDCCH when the second number is greater than or equal to the first number, and to abandon receiving or demodulating the second target PDCCH when the second number is less than the first number. The second number is the number of CCEs or REGs constituting the second target PDCCH and located within the target bandwidth. The target bandwidth includes the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth supported by the terminal. The frequency domain units include one of the following: cell, carrier, frequency band, and BWP. That is, in this possible implementation, if the number of CCEs or REGs actually transmitted within the target bandwidth of the second target PDCCH (i.e., the second number) is less than the first number, the terminal is instructed to abandon receiving or demodulating the second target PDCCH. The network-side device can control the second number based on the first number, thereby controlling the terminal to receive the second target PDCCH.

[0101] For example, the first parameter can be the minimum number of CCEs / REGs required to receive the PDCCH, denoted as N_cce_min or N_reg_min. Different values ​​or ratios can be configured for different aggregation levels (ALs); or a single value or ratio can be configured for all aggregation levels. When the number of CCEs / REGs constituting the PDCCH that are within the bandwidth of the cell / carrier / frequency band / BWP or the maximum bandwidth supported by the terminal is > (or ≥) N_cce_min or N_reg_min, the terminal receives and demodulates the PDCCH; otherwise, the terminal abandons receiving and demodulating the PDCCH.

[0102] In one possible implementation, the first parameter includes: a first ratio, wherein the first ratio indicates that the terminal receives and demodulates the second target PDCCH when the second ratio is greater than or equal to the first ratio, and abandons receiving or demodulating the second target PDCCH when the second ratio is less than the first ratio, wherein the second ratio is the ratio of the number of CCEs or REGs constituting the second target PDCCH and located within the target bandwidth to the total number of all CCEs or REGs constituting the second target PDCCH, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and BWP.

[0103] For example, the first parameter can be the minimum proportion of CCEs / REGs for receiving the PDCCH, denoted as R_cce_min or R_reg_min. Different values ​​or proportions can be configured for different aggregation levels (ALs). Alternatively, a single value or proportion can be configured for all aggregation levels. When (the number of CCEs / REGs constituting the PDCCH that are within the bandwidth of the cell / carrier / frequency band / BWP or the maximum bandwidth supported by the terminal) divided by (the total number of CCEs / REGs constituting the PDCCH) > (or ≥) R_cce_min or R_reg_min, the terminal receives and demodulates the PDCCH; otherwise, the terminal abandons receiving and demodulating the PDCCH.

[0104] Optionally, the number of the first parameters is the same as the number of aggregation levels supported by the second target PDCCH, each aggregation level corresponds to one first parameter, and different aggregation levels correspond to different first parameters.

[0105] For example, in Table 1, different N_cce_min are configured (or defined) for different aggregation levels AL.

[0106] Table 1.

[0107] PDCCH uses AL N_cce_min AL=1 1 AL=2 2 AL=4 2 AL=8 6 AL=16 8

[0108] Alternatively, the different aggregation levels supported by the second target PDCCH may correspond to the same first parameter.

[0109] For example, different aggregation levels (ALs) can be configured / defined with the same ratio, such as R_cce_min = 0.5, then the number of CCEs constituting the PDCCH is shown in Table 2.

[0110] Table 2.

[0111]

[0112] In this embodiment, optionally, the time-domain resources occupied by the second target CORESET include x OFDM symbols, where x is an integer greater than 3 and less than or equal to 14, and x is an integer multiple of y, where y is the number of OFDM symbols contained in a REG. Optionally, y = 6; x = 6, 12. This optional implementation increases the time-domain resources occupied by the second target CORESET, ensuring the capacity of the second target PDCCH.

[0113] Optionally, among the above possible implementations, the target parameter may further include: a second parameter, wherein the second parameter is used to notify the terminal how to receive the second target PDCCH when the second target condition is met.

[0114] Optionally, the method of receiving the second target PDCCH may include, but is not limited to, rate matching or puncturing. When the terminal determines to receive and demodulate the second target PDCCH according to the first parameter, it may receive the second target PDCCH in the manner indicated by the second parameter.

[0115] Optionally, the second target condition includes: the frequency domain resources for transmitting the second target PDCCH exceed the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, and the frequency domain units include one of the following: cell, carrier, frequency band, and BWP. This second target condition is similar to the first target condition in the above embodiments.

[0116] Optionally, the second target CORESET is located on the initial BWP of the terminal. That is, the network-side device transmits the second target PDCCH on the initial BWP of the terminal in the manner described above.

[0117] Optionally, the second target CORESET is associated with at least one of the following search space SS sets:

[0118] (1) The CSS set of PDCCH of type 0;

[0119] (2) CSS set of PDCCH of type 0A;

[0120] (3) The CSS set of PDCCH of type 1;

[0121] (4) The CSS set of PDCCH of type 2;

[0122] (5) The CSS set of PDCCH of type 3;

[0123] (6) USS set.

[0124] In this embodiment of the application, the second target CORESET can be CORESET#0. For example, the second target CORESET can be associated with at least one of the search space sets in (1)-(4) above. Of course, it is not limited to this. The second target CORESET can also be other CORESETs besides CORESET#0, for example, a CORESET associated with the search space sets in (5) and / or (6) above.

[0125] Figure 6 This diagram illustrates another flowchart of a method for receiving the physical downlink control channel according to an embodiment of this application. This method 600 can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal. Figure 6 As shown, the method may include the following steps.

[0126] S610, the terminal obtains the target parameters of the second target CORESET, wherein the target parameters include: a first parameter, the first parameter being a reference parameter for the terminal to determine whether to receive the second target PDCCH;

[0127] S612, the terminal determines, based on the first parameter, whether to receive the second target PDCCH transmitted on the resources of the second target CORESET.

[0128] The method for receiving the physical downlink control channel in this embodiment is the same as the method executed by the terminal corresponding to the above method 500. The relevant content is the same as that of method 500. For details, please refer to the description in method 500.

[0129] In one possible implementation, the first parameter includes a maximum coding rate; the terminal determines whether to receive the second target PDCCH transmitted on the resources of the second target CORESET based on the first parameter, including: if the target coding rate of the second target PDCCH is greater than or equal to the maximum coding rate, the terminal abandons receiving or abandons demodulating the second target PDCCH; if the target coding rate of the second target PDCCH is less than the maximum coding rate, the terminal receives and demodulates the second target PDCCH.

[0130] In one possible implementation, the first parameter may include: a first number; the terminal determines whether to receive the second target PDCCH transmitted on the resources of the second target CORESET based on the first parameter, including: if the second number is greater than or equal to the first number, the terminal receives and demodulates the second target PDCCH, wherein the second number is the number of CCEs or REGs constituting the second target PDCCH and located within the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, the frequency domain units including one of the following: cell, carrier, frequency band, and BWP; if the second number is less than the first number, the terminal abandons receiving or abandons demodulating the second target PDCCH.

[0131] In one possible implementation, the first parameter includes a first ratio; the terminal determines whether to receive the second target PDCCH transmitted on the resources of the second target CORESET based on the first parameter, including: if the second ratio is greater than or equal to the first ratio, the terminal receives and demodulates the second target PDCCH, wherein the second ratio is the ratio of the number of CCEs or REGs constituting the second target PDCCH and located within the target bandwidth to the total number of all CCEs or REGs constituting the second target PDCCH, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, the frequency domain units including one of the following: cell, carrier, frequency band, and BWP; if the second ratio is less than the first ratio, the terminal abandons receiving or abandons demodulating the second target PDCCH.

[0132] In this embodiment of the application, the target parameter may be configured by the network-side device or specified by the protocol.

[0133] In one possible implementation of this application embodiment, the terminal does not expect to receive PDCCHs with frequency domain resources exceeding the target bandwidth. The target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth supported by the terminal. The frequency domain units include one of the following: cell, carrier, frequency band, and BWP. The terminal's reluctance to receive PDCCHs with frequency domain resources exceeding the target bandwidth is a restriction on network-side transmission. If the network side transmits a PDCCH with frequency domain resources exceeding the target bandwidth, the terminal considers this an error and abandons reception. In other words, the terminal can ignore the target parameters transmitted by the network-side device; if the network side transmits a PDCCH with frequency domain resources exceeding the target bandwidth, the terminal considers this an error and abandons reception.

[0134] In one possible implementation, the target parameter further includes a second parameter, wherein the second parameter is used to notify the terminal how to receive the second target PDCCH when the second target condition is met.

[0135] Optionally, the second target condition includes: the frequency domain resources for transmitting the second target PDCCH exceed the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, and the frequency domain units include one of the following: cell, carrier, frequency band, and BWP.

[0136] Optionally, the second target PDCCH includes PDCCHs transmitted in at least one of the following ways:

[0137] CSS set for PDCCH of type 0;

[0138] A CSS set for PDCCH of type 0A;

[0139] The CSS set for type 1 PDCCH;

[0140] The CSS set for type 2 PDCCH;

[0141] The CSS set for type 3 PDCCH;

[0142] USS set.

[0143] Figure 7 This diagram illustrates yet another flow chart of a physical downlink control channel transmission method according to an embodiment of this application. This method 700 can be executed by a network-side device. In other words, the method can be executed by software or hardware installed on the network-side device. Figure 7 As shown, the method may include the following steps.

[0144] S710, the network-side device selects at least one CCE aggregation level from multiple target CCE aggregation levels of the target CSS set, wherein the target CSS set is configured via searchSpaceSIB1, and the multiple target CCE aggregation levels include: level 1 and level 2.

[0145] S712, the network-side device transmits a third target PDCCH on the resources of the third target CORESET at the selected at least one CCE aggregation level; wherein the third target CORESET is associated with the target CSS set.

[0146] In this embodiment of the application, the network-side device can extend the CCE aggregation level of the CSS set configured in searchSpaceSIB1. When using the CCE aggregation levels of level 1 and level 2, the frequency domain resources occupied by the third target PDCCH transmitted on the resources of the third target CORESET associated with the CSS set can be reduced, so that all or most of the CCEs constituting the third target PDCCH are within the receiving bandwidth of the terminal.

[0147] In one possible implementation, the multiple target CCE aggregation levels are defined by the protocol.

[0148] In another possible implementation, where the plurality of target CCE aggregation levels are configured by the network-side device, the method further includes, before the network-side device selects at least one CCE aggregation level from the plurality of target CCE aggregation levels of the target CSS set, the network-side device configuring the plurality of target CCE aggregation levels and the maximum number of PDCCH candidates corresponding to each target CCE aggregation level for the target CSS set.

[0149] In one possible implementation, before the network-side device selects at least one CCE aggregation level from multiple target CCE aggregation levels of the target CSS set, the method further includes: the network-side device instructing the target CCE aggregation level to be used under a third objective condition; or, the network-side device determining, according to a protocol, that the target CCE aggregation level is used under a third objective condition.

[0150] In one possible implementation, the third target condition may include: the frequency domain resources occupied by the third target CORESET exceed the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and BWP.

[0151] In this embodiment, the existing CCE aggregation level of the target CSS set can be extended by adding Level 1 and Level 2, as well as the maximum number of PDCCH candidates corresponding to Level 1 and Level 2 respectively. As shown in Table 3, the applicable situations of Level 1 and Level 2 are noted in the table.

[0152] Table 3.

[0153]

[0154] Alternatively, you can add CCE aggregation levels for the target CSS set and the maximum number of PDCCH candidates corresponding to each CCE aggregation level. When the third objective condition is met, select one or more CCE aggregation levels from the newly added CCE aggregation levels and the maximum number of PDCCH candidates corresponding to each CCE aggregation level. The newly added CCE aggregation levels for the target CSS set and the maximum number of PDCCH candidates corresponding to each CCE aggregation level can be shown in Table 4.

[0155] Table 4.

[0156] CCE aggregation level Candidates 1 6 2 3 4 1

[0157] In the embodiments of this application, as shown in Table 5, the target CCE aggregation level may further include level 6.

[0158] Table 5.

[0159] CCE aggregation level Candidates 1 6 2 3 4 1 6 1

[0160] In one possible implementation, the third target CORESET is located on the terminal's initial BWP. For example, on the terminal's initial BWP, the network-side device can select at least one of CCE aggregation levels 1, 2, and 6 to transmit the third target PDCCH.

[0161] In one possible implementation, the third target CORESET is associated with at least one of the following search space SS sets:

[0162] CSS set for PDCCH of type 0;

[0163] A CSS set for PDCCH of type 0A;

[0164] The CSS set for type 1 PDCCH;

[0165] The CSS set for type 2 PDCCH;

[0166] The CSS set for type 3 PDCCH;

[0167] USS set.

[0168] In the embodiments of this application, the third target CORESET can be CORESET#0. For example, the third target CORESET can be associated with at least one of the search space sets in (1)-(4) above. Of course, it is not limited to this. The third target CORESET can also be other CORESETs besides CORESET#0, for example, CORESETs associated with the search space sets in (5) and / or (6) above.

[0169] Figure 8 This diagram illustrates yet another flowchart of a method for receiving the physical downlink control channel according to an embodiment of this application. This method 800 can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal. Figure 8 As shown, the method may include the following steps.

[0170] S810, the terminal performs blind detection on the third target PDCCH according to multiple target CCE aggregation levels of the target CSS set, wherein the third target PDCCH is transmitted on the resources of the third target CORESET, the target CSS set is configured through searchSpaceSIB1, the third target CORESET is associated with the target CSS set, and the multiple target CCE aggregation levels include: level 1 and level 2.

[0171] The embodiments of this application are terminal execution methods corresponding to method 700, and have content corresponding to method 700. For details, please refer to the relevant description of method 700, which will not be repeated here.

[0172] In one possible implementation, the terminal performs blind detection of the third target PDCCH according to multiple target CCE aggregation levels of the target CSS set, including:

[0173] The terminal performs a blind detection of the third target PDCCH according to the aggregation level of the multiple target CCEs specified in the protocol; or...

[0174] The terminal performs a blind detection of the third target PDCCH according to the aggregation level of the multiple target CCEs configured by the network-side equipment.

[0175] In one possible implementation, the terminal performs blind detection of the third target PDCCH according to multiple target CCE aggregation levels of the target CSS set, including:

[0176] According to the instructions or protocol of the network-side device, the terminal performs blind detection on the third target PDCCH according to the aggregation level of multiple target CCEs in the target CSS set, provided that the third target condition is met.

[0177] In one possible implementation, the third target condition may include: the frequency domain resources occupied by the third target CORESET exceed the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and BWP.

[0178] In one possible implementation, the target CCE aggregation level also includes level 6.

[0179] Figure 9 This diagram illustrates yet another flowchart of a method for receiving the physical downlink control channel according to an embodiment of this application. This method 900 can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal. Figure 9 As shown, the method may include the following steps.

[0180] S910, when the fourth target PDCCH exceeds the target bandwidth, the terminal receives and demodulates the first part of the fourth target PDCCH, and abandons receiving or demodulating the second part of the fourth target PDCCH. The first part is the portion of the fourth target PDCCH transmitted on the target bandwidth, and the second part is the portion of the fourth target PDCCH transmitted on frequency domain resources exceeding the target bandwidth. The target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support. The frequency domain units include one of the following: cell, carrier, frequency band, and BWP.

[0181] In the embodiments of this application, the terminal can unconditionally receive and demodulate the complete PDCCH and part of the PDCCH transmitted within the bandwidth range of the cell / carrier / frequency band / BWP or within the maximum bandwidth supported by the terminal.

[0182] In this application embodiment, the fourth target PDCCH may include a PDCCH transmitted on at least one of the following:

[0183] CSS set for PDCCH of type 0;

[0184] A CSS set for PDCCH of type 0A;

[0185] The CSS set for type 1 PDCCH;

[0186] The CSS set for type 2 PDCCH;

[0187] The CSS set for type 3 PDCCH;

[0188] USS set.

[0189] In the embodiments of this application, the fourth target CORESET can be CORESET#0. For example, the fourth target CORESET can be associated with at least one of the search space sets in (1)-(4) above. Of course, it is not limited to this. The fourth target CORESET can also be other CORESETs besides CORESET#0, for example, CORESETs associated with the search space sets in (5) and / or (6) above.

[0190] It should be noted that the terminal can be configured with methods 400, 600, 800 and 900 simultaneously, and different methods will be executed under different circumstances. For example, for PDCCH transmitted in Type 0 / 0A / 1 / 2-PDCCH CSS set, method 900 is used; for PDCCH transmitted in Type 3 CSS set or USS, methods 400, 600 and 800 are used.

[0191] It should be noted that the physical downlink control channel transmission method provided in this application embodiment can be executed by a physical downlink control channel transmission device, or by a control module within the physical downlink control channel transmission device for executing the physical downlink control channel transmission method. This application embodiment uses the execution of the physical downlink control channel transmission method by a physical downlink control channel transmission device as an example to illustrate the physical downlink control channel transmission device provided in this application embodiment.

[0192] Figure 10 A schematic diagram of a transmission apparatus for the physical downlink control channel provided in an embodiment of this application is shown below. Figure 10 As shown, the device 1000 mainly includes: a first acquisition module 1001 and a first transmission module 1002. The first acquisition module 1001 is used to acquire the mapping method between CCE and REG of the first target CORESET, wherein the mapping method between CCE and REG is a non-interleaved mapping method; the first transmission module 1002 is used to transmit the first target physical downlink control channel (PDCCH) on the resources corresponding to the first target CORESET using the non-interleaved mapping method between CCE and REG.

[0193] In one possible implementation, the first target CORESET is associated with at least one of the following search space SS sets:

[0194] The public search space CSS set of type 0 PDCCH;

[0195] A CSS set for PDCCH of type 0A;

[0196] The CSS set for type 1 PDCCH;

[0197] The CSS set for type 2 PDCCH;

[0198] The CSS set for type 3 PDCCH;

[0199] Terminal-specific search space (USS) set.

[0200] In one possible implementation, the network-side device configuration or protocol specifies that, under the condition of satisfying the first target condition, the mapping method between CCE and REG of the first target CORESET is a non-interleaved mapping method.

[0201] In one possible implementation, the first objective condition includes:

[0202] The frequency domain resources occupied by the first target CORESET exceed the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and bandwidth portion (BWP).

[0203] In one possible implementation, the time-domain resources occupied by the first target CORESET include 3 orthogonal frequency division multiplexing (OFDM) symbols, or the time-domain resources of the first target CORESET include 6 OFDM symbols.

[0204] In one possible implementation, the first target CORESET is located on the initial BWP of the terminal.

[0205] Figure 11 Another schematic diagram of the transmission apparatus for the physical downlink control channel provided in the embodiments of this application is shown below. Figure 11 As shown, the device 1100 mainly includes: a first configuration module 1101 and a second transmission module 1102. The first configuration module 1101 is used to configure target parameters for a second target CORESET, wherein the target parameters include a first parameter, which is a reference parameter for the terminal to determine whether to receive the second target PDCCH; the second transmission module 1102 is used to transmit the second target PDCCH on the resources of the second target CORESET.

[0206] In one possible implementation, the first parameter includes: a maximum coding rate, wherein the maximum coding rate indicates that if the target coding rate of the second target PDCCH is greater than or equal to the maximum coding rate, the terminal will abandon receiving or abandon demodulating the second target PDCCH, and if the target coding rate of the second target PDCCH is less than the maximum coding rate, the terminal will receive and demodulate the second target PDCCH.

[0207] In one possible implementation, the first parameter includes: a first number, wherein the first number indicates that the terminal receives and demodulates the second target PDCCH when the second number is greater than or equal to the first number, and abandons receiving or demodulating the second target PDCCH when the second number is less than the first number, wherein the second number is the number of CCEs or REGs constituting the second target PDCCH and located within the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and BWP.

[0208] In one possible implementation, the first parameter includes: a first ratio, wherein the first ratio indicates that the terminal receives and demodulates the second target PDCCH when the second ratio is greater than or equal to the first ratio, and abandons receiving or demodulating the second target PDCCH when the second ratio is less than the first ratio, wherein the second ratio is the ratio of the number of CCEs or REGs constituting the second target PDCCH and located within the target bandwidth to the total number of all CCEs or REGs constituting the second target PDCCH, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and BWP.

[0209] In one possible implementation, the number of the first parameters is the same as the number of aggregation levels supported by the second target PDCCH, with each aggregation level corresponding to one first parameter, and different aggregation levels corresponding to different first parameters.

[0210] In one possible implementation, the different aggregation levels supported by the second target PDCCH correspond to the same first parameter.

[0211] In one possible implementation, the time-domain resources occupied by the second target CORESET include x OFDM symbols, where x is an integer greater than 3 and less than or equal to 14, and x is an integer multiple of y, where y is the number of OFDM symbols contained in a REG.

[0212] In one possible implementation, the target parameter further includes a second parameter, wherein the second parameter is used to notify the terminal how to receive the second target PDCCH when the second target condition is met.

[0213] In one possible implementation, the second objective condition includes:

[0214] The frequency domain resources for transmitting the second target PDCCH exceed the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, and the frequency domain units include one of the following: cell, carrier, frequency band, and BWP.

[0215] In one possible implementation, the second target PDCCH can be received by either rate matching or puncturing.

[0216] In one possible implementation, the second target CORESET is located on the initial BWP of the terminal.

[0217] In one possible implementation, the second target CORESET is associated with at least one of the following search space SS sets:

[0218] CSS set for PDCCH of type 0;

[0219] A CSS set for PDCCH of type 0A;

[0220] The CSS set for type 1 PDCCH;

[0221] The CSS set for type 2 PDCCH;

[0222] The CSS set for type 3 PDCCH;

[0223] USS set.

[0224] In one possible implementation, the second target CORESET includes CORESET#0.

[0225] In one possible implementation, the second target CORESET includes CORESET other than CORESET#0.

[0226] Figure 12 Another schematic diagram of the transmission apparatus for the physical downlink control channel provided in the embodiments of this application is shown below. Figure 12 As shown, the device 1200 mainly includes a selection module 1201 and a third transmission module 1202. The selection module 1201 is used to select at least one CCE aggregation level from multiple target CCE aggregation levels of a target CSS set, wherein the target CSS set is configured via searchSpaceSIB1, and the multiple target CCE aggregation levels include level 1 and level 2. The third transmission module 1202 is used to transmit a third target PDCCH on the resources of a third target CORESET at the selected at least one CCE aggregation level; wherein the third target CORESET is associated with the target CSS set.

[0227] In one possible implementation, the multiple target CCE aggregation levels are defined by the protocol.

[0228] In one possible implementation, the device further includes:

[0229] The configuration module is used to configure the multiple target CCE aggregation levels and the maximum number of PDCCH candidates corresponding to each target CCE aggregation level for the target CSS set.

[0230] In one possible implementation, the selection module 1201 is also used for:

[0231] The target CCE aggregation level is indicated to be used under the condition that the third objective is met; or,

[0232] According to the agreement, the target CCE aggregation level is determined to be used under the condition of satisfying the third objective.

[0233] In one possible implementation, the third objective condition includes:

[0234] The frequency domain resources occupied by the third target CORESET exceed the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and bandwidth portion BWP.

[0235] In one possible implementation, the target CCE aggregation level also includes level 6.

[0236] In one possible implementation, the third target CORESET is located on the initial BWP of the terminal.

[0237] In one possible implementation, the third target CORESET is associated with at least one of the following search space SS sets:

[0238] CSS set for PDCCH of type 0;

[0239] A CSS set for PDCCH of type 0A;

[0240] The CSS set for type 1 PDCCH;

[0241] The CSS set for type 2 PDCCH;

[0242] The CSS set for type 3 PDCCH;

[0243] USS set.

[0244] In one possible implementation, the third target CORESET includes CORESET#0.

[0245] In one possible implementation, the third target CORESET includes CORESETs other than CORESET#0.

[0246] The transmission device for the physical downlink control channel in this application embodiment can be a device, or it can be a component, integrated circuit, or chip in a network-side device. For example, the network-side device can be, but is not limited to, the type of network-side device 12 listed above, and this application embodiment does not specifically limit it.

[0247] The transmission device for the physical downlink control channel in this application embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit the specific operating system used.

[0248] The transmission apparatus for the physical downlink control channel provided in this application embodiment can achieve Figures 2 to 9 The various processes implemented by the network-side device in the method embodiment achieve the same technical effect, and will not be described again here to avoid repetition.

[0249] Figure 13 This invention provides a schematic diagram of the structure of a receiving apparatus for a physical downlink control channel, as shown in the embodiment of this application. Figure 13 As shown, the device 1300 mainly includes a second acquisition module 1301 and a first receiving module 1302. The second acquisition module 1301 is used to acquire the mapping method between CCE and REG of the first target CORESET, wherein the mapping method between CCE and REG includes a non-interleaved mapping method. The first receiving module 1302 is used, under the condition of satisfying the first target, to receive and demodulate the first target PDCCH transmitted on the resource corresponding to the first target CORESET, using the non-interleaved mapping method between CCE and REG.

[0250] In one possible implementation, the first objective condition includes:

[0251] The frequency domain resources occupied by the first target CORESET exceed the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and bandwidth portion (BWP).

[0252] In one possible implementation, the first target CORESET is located on the initial BWP of the terminal.

[0253] In one possible implementation, the mapping method between the CCE and REG of the first target CORESET is specified by the network-side device configuration or protocol.

[0254] Figure 14 This invention provides another schematic diagram of the receiving apparatus for the physical downlink control channel, as shown in the embodiment of this application. Figure 14As shown, the device 1400 mainly includes: a third acquisition module 1401 and a second receiving module 1402. The third acquisition module 1401 is used to acquire target parameters of the second target CORESET, wherein the target parameters include: a first parameter, which is a reference parameter for the terminal to determine whether to receive the second target PDCCH; the second receiving module 1402 is used to determine, based on the first parameter, whether to receive the second target PDCCH transmitted on the resources of the second target CORESET.

[0255] In one possible implementation, the first parameter includes: maximum coding rate;

[0256] The second receiving module 1402 determines whether to receive the second target PDCCH transmitted on the resources of the second target CORESET based on the first parameter, including:

[0257] If the target coding rate of the second target PDCCH is greater than or equal to the maximum coding rate, the reception or demodulation of the second target PDCCH shall be abandoned.

[0258] If the target coding rate of the second target PDCCH is less than the maximum coding rate, the second target PDCCH is received and demodulated.

[0259] In one possible implementation, the first parameter includes: a first number;

[0260] The second receiving module 1402 determines whether to receive the second target PDCCH transmitted on the resources of the second target CORESET based on the first parameter, including:

[0261] When the second number is greater than or equal to the first number, the second target PDCCH is received and demodulated, wherein the second number is the number of CCEs or REGs constituting the second target PDCCH and located within the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and BWP;

[0262] If the second number is less than the first number, then the reception or demodulation of the second target PDCCH is abandoned.

[0263] In one possible implementation, the first parameter includes: a first ratio;

[0264] The second receiving module 1402 determines whether to receive the second target PDCCH transmitted on the resources of the second target CORESET based on the first parameter, including:

[0265] When the second ratio is greater than or equal to the first ratio, the second target PDCCH is received and demodulated, wherein the second ratio is the ratio of the number of CCEs or REGs constituting the second target PDCCH and located within the target bandwidth to the total number of CCEs or REGs constituting the second target PDCCH, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and BWP;

[0266] If the second ratio is less than the first ratio, then the reception or demodulation of the second target PDCCH is abandoned.

[0267] In one possible implementation, the target parameters are configured by the network-side device or specified by the protocol.

[0268] In one possible implementation, the device does not expect to receive PDCCH with frequency domain resources exceeding a target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, the frequency domain units including one of: cell, carrier, frequency band, and BWP.

[0269] In one possible implementation, the target parameter further includes a second parameter, wherein the second parameter is used to notify the terminal how to receive the second target PDCCH when the second target condition is met.

[0270] In one possible implementation, the second objective condition includes:

[0271] The frequency domain resources for transmitting the second target PDCCH exceed the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, and the frequency domain units include one of the following: cell, carrier, frequency band, and BWP.

[0272] In one possible implementation, the second target PDCCH includes PDCCHs transmitted in at least one of the following ways:

[0273] CSS set for PDCCH of type 0;

[0274] A CSS set for PDCCH of type 0A;

[0275] The CSS set for type 1 PDCCH;

[0276] The CSS set for type 2 PDCCH;

[0277] The CSS set for type 3 PDCCH;

[0278] USS set.

[0279] Figure 15 This invention provides another schematic diagram of the receiving apparatus for the physical downlink control channel, as shown in the embodiment of this application. Figure 15 As shown, the device 1500 mainly includes: a fourth acquisition module 1501 and a third receiving module 1502. The fourth acquisition module 1501 is used to acquire multiple target CCE aggregation levels of a target CSS set, wherein the target CSS set is configured via searchSpaceSIB1, and the multiple target CCE aggregation levels include level 1 and level 2. The third receiving module 1502 is used to perform blind detection on a third target PDCCH according to the multiple target CCE aggregation levels, wherein the third target PDCCH is transmitted on resources of a third target CORESET, and the third target CORESET is associated with the target CSS set.

[0280] In one possible implementation, the third receiving module 1502 performs blind detection on the third target PDCCH according to multiple target CCE aggregation levels of the target CSS set, including:

[0281] A blind test is performed on the third target PDCCH according to the aggregation levels of the multiple target CCEs specified in the agreement; or...

[0282] Blindly test the third target PDCCH according to the aggregation level of the multiple target CCEs configured on the network-side equipment.

[0283] In one possible implementation, the third receiving module 1502 performs blind detection on the third target PDCCH according to multiple target CCE aggregation levels of the target CSS set, including:

[0284] According to the instructions or protocol of the network-side equipment, and provided that the third target condition is met, the third target PDCCH is blindly checked according to the aggregation level of multiple target CCEs in the target CSS set.

[0285] In one possible implementation, the third objective condition includes:

[0286] The frequency domain resources occupied by the third target CORESET exceed the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and bandwidth portion BWP.

[0287] In one possible implementation, the target CCE aggregation level also includes level 6.

[0288] Figure 16 This invention provides another schematic diagram of the receiving apparatus for the physical downlink control channel, as shown in the embodiment of this application. Figure 16 As shown, the device 1600 mainly includes: a determining module 1601 and a fourth receiving module 1602. The determining module 1601 is used to determine that the fourth target PDCCH exceeds the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain unit currently deployed in the communication system, and / or the maximum bandwidth supported by the terminal, wherein the frequency domain unit includes one of the following: cell, carrier, frequency band, and bandwidth portion (BWP); the fourth receiving module 1602 is used to, when the fourth target PDCCH exceeds the target bandwidth, receive and demodulate a first portion of the fourth target PDCCH, and abandon receiving or abandoning demodulating a second portion of the fourth target PDCCH, wherein the first portion is the portion of the fourth target PDCCH transmitted on the target bandwidth, and the second portion is the portion of the fourth target PDCCH transmitted on frequency domain resources exceeding the target bandwidth.

[0289] In one possible implementation, the fourth target PDCCH includes a PDCCH transmitted on at least one of the following:

[0290] CSS set for PDCCH of type 0;

[0291] A CSS set for PDCCH of type 0A;

[0292] The CSS set for type 1 PDCCH;

[0293] The CSS set for type 2 PDCCH;

[0294] The CSS set for type 3 PDCCH;

[0295] USS set.

[0296] Optional, such as Figure 17As shown, this application embodiment also provides a communication device 1700, including a processor 1701, a memory 1702, and a program or instructions stored in the memory 1702 and executable on the processor 1701. For example, when the communication device 1700 is a terminal, the program or instructions executed by the processor 1701 implement the various processes of the above-described physical downlink control channel reception method embodiment, and achieve the same technical effect. When the communication device 1700 is a network-side device, the program or instructions executed by the processor 1701 implement the various processes of the above-described physical downlink control channel transmission method embodiment, and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0297] This application also provides a terminal, including a processor and a communication interface. The processor is used to implement the various processes of the above-described physical downlink control channel receiving method embodiment, and the communication interface is used to communicate with network-side devices. This terminal embodiment corresponds to the above-described terminal-side method embodiment; all implementation processes and methods of the above method embodiments can be applied to this terminal embodiment and achieve the same technical effects. Specifically, Figure 18 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0298] The terminal 1800 includes, but is not limited to, the following components: radio frequency unit 1801, network module 1802, audio output unit 1803, input unit 1804, sensor 1805, display unit 1806, user input unit 1807, interface unit 1808, memory 1809, and processor 1810.

[0299] Those skilled in the art will understand that the terminal 1800 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1810 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 18 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0300] It should be understood that, in this embodiment, the input unit 1804 may include a graphics processing unit (GPU) 18041 and a microphone 18042. The GPU 18041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1806 may include a display panel 18061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1807 includes a touch panel 18071 and other input devices 18072. The touch panel 18071 is also called a touch screen. The touch panel 18071 may include a touch detection device and a touch controller. Other input devices 18072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0301] In this embodiment, the radio frequency unit 1801 receives downlink data from the network-side device and processes it for the processor 1810; additionally, it sends uplink data to the network-side device. Typically, the radio frequency unit 1801 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0302] The memory 1809 can be used to store software programs or instructions and various data. The memory 1809 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1809 may include high-speed random access memory and non-transient memory, which may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-transient solid-state storage device.

[0303] Processor 1810 may include one or more processing units; optionally, processor 1810 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1810.

[0304] The processor 1810 is used for:

[0305] Obtain the mapping method of CCE and REG for the first target CORESET, wherein the mapping method of CCE and REG includes: a non-interleaved mapping method; under the condition of satisfying the first target, using the non-interleaved mapping method of CCE and REG, receive and demodulate the resource on-transmitter of the first target PDCCH corresponding to the first target CORESET; or,

[0306] Obtain target parameters for the second target CORESET, wherein the target parameters include: a first parameter, which is a reference parameter for the terminal to determine whether to receive the second target PDCCH; and, based on the first parameter, determine whether to receive the second target PDCCH transmitted on the resources of the second target CORESET; or,

[0307] Obtain multiple target CCE aggregation levels for the target CSS set, wherein the target CSS set is configured via searchSpaceSIB1, and the multiple target CCE aggregation levels include: level 1 and level 2; perform blind detection on a third target PDCCH according to the multiple target CCE aggregation levels, wherein the third target PDCCH is transmitted on resources of a third target CORESET, and the third target CORESET is associated with the target CSS set; or,

[0308] If the fourth target PDCCH exceeds the target bandwidth, the system receives and demodulates the first part of the fourth target PDCCH, and abandons receiving or demodulating the second part of the fourth target PDCCH. The first part is the portion of the fourth target PDCCH transmitted on the target bandwidth, and the second part is the portion of the fourth target PDCCH transmitted on frequency domain resources exceeding the target bandwidth. The target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support. The frequency domain units include one of the following: cell, carrier, frequency band, and bandwidth portion (BWP).

[0309] This application also provides a network-side device, including a processor and a communication interface. The processor is used to implement the various processes of the above-described physical downlink control channel transmission method embodiment, and the communication interface is used to communicate with a terminal. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above method embodiments can be applied to this network-side device embodiment and achieve the same technical effects.

[0310] Specifically, embodiments of this application also provide a network-side device. For example... Figure 19As shown, the network device 1900 includes an antenna 1901, a radio frequency (RF) device 1902, and a baseband device 1903. The antenna 1901 is connected to the RF device 1902. In the uplink direction, the RF device 1902 receives information through the antenna 1901 and transmits the received information to the baseband device 1903 for processing. In the downlink direction, the baseband device 1903 processes the information to be transmitted and sends it to the RF device 1902. The RF device 1902 processes the received information and transmits it through the antenna 1901.

[0311] The aforementioned frequency band processing device can be located in the baseband device 1903. The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1903, which includes a processor 1904 and a memory 1905.

[0312] The baseband device 1903 may, for example, include at least one baseband board on which multiple chips are disposed, such as... Figure 19 As shown, one of the chips, for example, is a processor 1904, which is connected to a memory 1905 to call the program in the memory 1905 and execute the network device operation shown in the above method embodiment.

[0313] The baseband device 1903 may also include a network interface 1906 for exchanging information with the radio frequency device 1902, such as a common public radio interface (CPRI).

[0314] Specifically, the network-side device in this embodiment of the invention further includes: instructions or programs stored in memory 1905 and executable on processor 1904, wherein processor 1904 calls the instructions or programs in memory 1905 to execute... Figures 10 to 12 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0315] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described physical downlink control channel transmission method embodiment or the various processes of the above-described physical downlink control channel reception method embodiment, and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0316] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0317] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described physical downlink control channel transmission method embodiment, or to implement the various processes of the above-described physical downlink control channel reception method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0318] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0319] This application also provides a computer program / program product, which is stored in a non-transient storage medium. The program / program product is executed by at least one processor to implement the various processes of the above-described physical downlink control channel transmission method embodiment, or to implement the various processes of the above-described physical downlink control channel reception method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0320] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0321] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0322] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for transmitting a physical downlink control channel, characterized in that, include: The network-side device obtains the mapping method of the control channel unit (CCE) and resource unit group (REG) of the first target control resource set (CORESET). Under the condition of satisfying the first target, the mapping method of the CCE and REG of the first target CORESET is a non-interleaved mapping method. The network-side device uses a non-interleaved mapping method for CCE and REG to transmit the first target physical downlink control channel (PDCCH) on the resources corresponding to the first target CORESET. Wherein, the first target CORESET is associated with at least one of the following search space SS sets: The public search space CSS set of type 0 PDCCH; A CSS set for PDCCH of type 0A; The CSS set for type 1 PDCCH; Type 2 PDCCH CSS set; The first target condition includes: the frequency domain resources occupied by the first target CORESET exceed the target bandwidth.

2. The method according to claim 1, characterized in that, The first target CORESET is also associated with at least one of the following search space SS sets: Type 3 PDCCH CSS set; Terminal-specific search space (USS) set.

3. The method according to claim 2, characterized in that, The target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and bandwidth portion (BWP).

4. The method according to any one of claims 1 to 3, characterized in that, The time-domain resources occupied by the first target CORESET include 3 orthogonal frequency division multiplexing (OFDM) symbols, or the time-domain resources of the first target CORESET include 6 OFDM symbols.

5. The method according to any one of claims 1 to 3, characterized in that, The first target CORESET is located on the initial BWP of the terminal.

6. The method according to claim 1, characterized in that, The first target CORESET is CORESET#0.

7. A method for receiving a physical downlink control channel, characterized in that, include: The terminal obtains the mapping method of CCE and REG of the first target CORESET, wherein the mapping method of CCE and REG includes: non-interleaved mapping method; Under the condition that the first target condition is met, the terminal receives and demodulates the resource corresponding to the first target CORESET and transmits the first target PDCCH on the non-interleaved mapping method of CCE and REG. Wherein, the first target CORESET is associated with at least one of the following search space SS sets: The public search space CSS set of type 0 PDCCH; A CSS set for PDCCH of type 0A; The CSS set for type 1 PDCCH; Type 2 PDCCH CSS set; The first target condition includes: the frequency domain resources occupied by the first target CORESET exceed the target bandwidth.

8. The method according to claim 7, characterized in that, The target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and bandwidth portion (BWP).

9. The method according to claim 7, characterized in that, The first target CORESET is located on the initial BWP of the terminal.

10. The method according to claim 7, characterized in that, The first target CORESET is CORESET#0.

11. The method according to claim 7, characterized in that, The mapping method between CCE and REG of the first target CORESET is specified by the network-side device configuration or protocol.

12. A method for receiving a physical downlink control channel, characterized in that, include: When the fourth target PDCCH exceeds the target bandwidth, the terminal receives and demodulates the first part of the fourth target PDCCH, and abandons receiving or demodulating the second part of the fourth target PDCCH. The first part is the portion of the fourth target PDCCH transmitted on the target bandwidth, and the second part is the portion of the fourth target PDCCH transmitted on frequency domain resources exceeding the target bandwidth. The target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support. The frequency domain units include one of the following: cell, carrier, frequency band, and bandwidth portion (BWP). The fourth target PDCCH includes PDCCHs transmitted on at least one of the following: CSS set for PDCCH of type 0; A CSS set for PDCCH of type 0A; The CSS set for type 1 PDCCH; The CSS set for PDCCH of type 2.

13. The method according to claim 12, characterized in that, The fourth target PDCCH also includes a PDCCH transmitted on at least one of the following: Type 3 PDCCH CSS set; USS set.

14. The method according to claim 12, characterized in that, At least one of the CSS sets of type 0 PDCCH, type 0A PDCCH, type 1 PDCCH, or type 2 PDCCH is associated with a fourth target CORESET, wherein the fourth target CORESET is CORESET#0.

15. A transmission apparatus for a physical downlink control channel, characterized in that, include: The first acquisition module is used to acquire the mapping method of CCE and REG of the first target CORESET, wherein, under the condition of the first target, the mapping method of CCE and REG of the first target CORESET is a non-interleaved mapping method. The first transmission module is used to transmit the first target physical downlink control channel (PDCCH) on the resources corresponding to the first target CORESET using a non-interleaved mapping method between CCE and REG. Wherein, the first target CORESET is associated with at least one of the following search space SS sets: The public search space CSS set of type 0 PDCCH; A CSS set for PDCCH of type 0A; The CSS set for type 1 PDCCH; Type 2 PDCCH CSS set; The first target condition includes: the frequency domain resources occupied by the first target CORESET exceed the target bandwidth.

16. The apparatus according to claim 15, characterized in that, The first target CORESET is also associated with at least one of the following search space SS sets: Type 3 PDCCH CSS set; Terminal-specific search space (USS) set.

17. The apparatus according to claim 16, characterized in that, The target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and bandwidth portion (BWP).

18. The apparatus according to any one of claims 15 to 17, characterized in that, The time-domain resources occupied by the first target CORESET include 3 orthogonal frequency division multiplexing (OFDM) symbols, or the time-domain resources of the first target CORESET include 6 OFDM symbols.

19. The apparatus according to any one of claims 15 to 17, characterized in that, The first target CORESET is located on the initial BWP of the terminal.

20. The apparatus according to any one of claims 15 to 17, characterized in that, Its features are, The first target CORESET is CORESET#0.

21. A receiving device for a physical downlink control channel, characterized in that, include: The second acquisition module is used to acquire the mapping method of CCE and REG of the first target CORESET, wherein the mapping method of CCE and REG includes: non-interleaved mapping method; The first receiving module is configured to receive and demodulate the first target PDCCH transmitted on the resource corresponding to the first target CORESET, using a non-interleaved mapping method for CCE and REG, when the first target condition is met. Wherein, the first target CORESET is associated with at least one of the following search space SS sets: The public search space CSS set of type 0 PDCCH; A CSS set for PDCCH of type 0A; The CSS set for type 1 PDCCH; Type 2 PDCCH CSS set; The first target condition includes: the frequency domain resources occupied by the first target CORESET exceed the target bandwidth.

22. The apparatus according to claim 21, characterized in that, The target bandwidth includes: the bandwidth of the frequency domain units currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain units include one of the following: cell, carrier, frequency band, and bandwidth portion (BWP).

23. The apparatus according to claim 21, characterized in that, The first target CORESET is located on the initial BWP of the terminal.

24. The apparatus according to claim 21, characterized in that, The first target CORESET is CORESET#0.

25. The apparatus according to claim 21, characterized in that, The mapping method between CCE and REG of the first target CORESET is specified by the network-side device configuration or protocol.

26. A receiving device for a physical downlink control channel, characterized in that, include: The determination module is used to determine that the fourth target PDCCH exceeds the target bandwidth, wherein the target bandwidth includes: the bandwidth of the frequency domain unit currently deployed in the communication system, and / or the maximum bandwidth that the terminal can support, wherein the frequency domain unit includes one of the following: cell, carrier, frequency band, and bandwidth portion (BWP); The fourth receiving module is configured to receive and demodulate a first part of the fourth target PDCCH and abandon receiving or demodulating a second part of the fourth target PDCCH when the fourth target PDCCH exceeds the target bandwidth, wherein the first part is the portion of the fourth target PDCCH transmitted on the target bandwidth, and the second part is the portion of the fourth target PDCCH transmitted on frequency domain resources exceeding the target bandwidth; The fourth target PDCCH includes PDCCHs transmitted on at least one of the following: CSS set for PDCCH of type 0; A CSS set for PDCCH of type 0A; The CSS set for type 1 PDCCH; The CSS set for PDCCH of type 2.

27. A terminal, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method for receiving a physical downlink control channel as described in any one of claims 7 to 12.

28. A network-side device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the transmission method for the physical downlink control channel as described in any one of claims 1 to 6.

29. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the transmission method of the physical downlink control channel as described in any one of claims 1 to 6, or the steps of the reception method of the physical downlink control channel as described in any one of claims 7 to 12.

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