CN116471691A

CN116471691A - PDCCH resource determining method, terminal and storage medium

Info

Publication number: CN116471691A
Application number: CN202210010393.9A
Authority: CN
Inventors: 吴凯; 王理惠
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2023-07-21
Also published as: WO2023131238A1

Abstract

The application provides a PDCCH resource determining method, a terminal and a storage medium, wherein the PDCCH resource determining method comprises the following steps: determining a first PDCCH resource based on a target object, wherein the first PDCCH resource is a resource for a narrow bandwidth terminal to monitor the first PDCCH, and the target object comprises at least one of the following: indication information of the PBCH; synchronization signal resources, the synchronization signal resources comprising: SSB resources, or PSS resources, or SSS resources; and the second PDCCH resource is indicated by the PBCH and used for the second PDCCH for system information transmission.

Description

PDCCH resource determining method, terminal and storage medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a physical downlink control channel (Physical downlink control channel, PDCCH) resource determination method, a terminal and a storage medium.

Background

In order to support lower cost or lower complexity terminals, narrow bandwidth terminals are defined in some communication systems (e.g., 5G or 6G), such as: terminals with no more than 5MHz capability, or terminals with no more than 10MHz capability. But the PDCCH resources configured in these communication systems are configured for common terminals (i.e. non-narrowband terminals), i.e. the PDCCH resources in these communication systems are resources for common terminals to monitor PDCCH, so that the current resource configuration effect is poor.

Disclosure of Invention

The embodiment of the application provides a PDCCH resource determining method, a terminal and a storage medium, which can solve the problem of relatively poor resource allocation effect.

In a first aspect, a method for determining PDCCH resources is provided, which includes

The terminal determines a first PDCCH resource based on a target object, wherein the first PDCCH resource is a resource for a narrow bandwidth terminal to monitor the first PDCCH, and the target object comprises at least one of the following:

indication information of a physical broadcast channel (Physical broadcast channel, PBCH);

synchronization signal resources, the synchronization signal resources comprising: synchronization signal block (Synchronization Signal Block, SSB) resources, or primary synchronization signal (Primary Synchronization Signal, PSS) resources, or secondary synchronization signal (Secondary Synchronization Signal, SSS) resources;

and the second PDCCH resource is indicated by the PBCH and used for the second PDCCH for system information transmission.

A second aspect provides a PDCCH resource determining apparatus, comprising

A determining module, configured to determine a first PDCCH resource based on a target object, where the first PDCCH resource is a resource for a narrow bandwidth terminal to monitor the first PDCCH, and the target object includes at least one of the following:

Indication information of the PBCH;

synchronization signal resources, the synchronization signal resources comprising: SSB resources, or PSS resources, or SSS resources;

In a third aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the PDCCH resource determination method of the first aspect.

In a fourth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to determine a first PDCCH resource based on a target object, where the first PDCCH resource is a resource for a narrow bandwidth terminal to monitor a first PDCCH, and the target object includes at least one of:

indication information of the PBCH;

In a fifth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the PDCCH resource determination method of the first aspect.

In a sixth aspect, a chip is provided, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the PDCCH resource determining method according to the first aspect.

In a seventh aspect, a computer program/program product is provided, the computer program/program product being stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the PDCCH resource determination method according to the first aspect.

In this embodiment of the present application, a first PDCCH resource is determined based on a target object, where the first PDCCH resource is a resource for a narrow bandwidth terminal to monitor the first PDCCH, and the target object includes at least one of the following: indication information of the PBCH; synchronization signal resources, the synchronization signal resources comprising: SSB resources, or PSS resources, or SSS resources; and the second PDCCH resource is indicated by the PBCH and used for the second PDCCH for system information transmission. Therefore, the resource for the narrow bandwidth terminal to monitor the PDCCH can be determined through the target object, and the resource configuration effect can be improved.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a flowchart of a PDCCH resource determining method provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of a resource relationship provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of another resource relationship provided by embodiments of the present application;

FIG. 5 is a schematic diagram of another resource relationship provided by an embodiment of the present application;

fig. 6 is a block diagram of a PDCCH resource determining apparatus according to an embodiment of the present application;

fig. 7 is a block diagram of a communication device according to an embodiment of the present application;

fig. 8 is a block diagram of a terminal according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems,but also other wireless communication systems such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (SC-carrier Frequency Division Multiple Access), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. In the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

The PDCCH resource determining method, the terminal and the storage medium provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through some embodiments and application scenarios thereof.

Referring to fig. 2, fig. 2 is a flowchart of a PDCCH resource determining method provided in an embodiment of the present application, and as shown in fig. 2, the method includes the following steps:

step 201, the terminal determines a first PDCCH resource based on a target object, where the first PDCCH resource is a resource for the narrow bandwidth terminal to monitor the first PDCCH, and the target object includes at least one of the following:

indication information of the PBCH;

The first PDCCH resource may be a resource for the narrow bandwidth terminal to monitor the first PDCCH, where the narrow bandwidth terminal monitors the PDCCH on the first PDCCH resource.

The PBCH is a PBCH sent by the network side device, the indication information of the PBCH may explicitly or implicitly indicate the first PDCCH resource, and in step 201, the terminal may directly determine the first PDCCH resource according to the indication information of the PBCH.

The synchronization signal resource may be a resource for at least one of a narrowband terminal and a non-narrowband terminal to receive a synchronization signal, for example: at least one of the narrowband terminal and the non-narrowband terminal receives a resource of an SSB, PSS, or SSS. In step 201, the terminal may determine the first PDCCH resource according to a correspondence between the synchronization signal resource and the first PDCCH resource, where the correspondence may be defined or preconfigured by a protocol, or indicated by the PBCH, etc., which is not limited.

The system information may be system information corresponding to a non-narrowband terminal, and the resource of the second PDCCH for system information transmission is a PDCCH resource for receiving the system information by the non-narrowband terminal, where the bandwidth of the terminal is generally larger, for example, the terminal supports a transmission or reception capability of 20MHz bandwidth. In step 201, the terminal may determine the first PDCCH resource according to a correspondence between the second PDCCH resource and the first PDCCH resource, where the correspondence may be defined or preconfigured by a protocol, or indicated by the PBCH, etc., and is not limited thereto.

In this embodiment of the present application, the terminal performing step 201 may be a narrow bandwidth terminal, and the narrow bandwidth terminal is a terminal with capability of not more than 5MHz, or a terminal with capability of not more than 10 MHz.

In the embodiment of the application, the method and the device can determine the resource for the narrow bandwidth terminal to monitor the PDCCH through the target object, so that the resource configuration effect can be improved.

As an alternative embodiment, the method further comprises:

and the terminal monitors the first PDCCH on the first PDCCH resource.

In the embodiment, the method and the device can realize that the narrow bandwidth terminal monitors the first PDCCH on the resource for the narrow bandwidth terminal to monitor the first PDCCH, so that the PDCCH monitoring effect of the narrow bandwidth terminal can be improved.

As an alternative embodiment, the PBCH is further used to indicate the communication resources of the non-narrowband bandwidth terminal.

The communication resources may include: control resources such as resource sets (Control resource set, CORESET) and common search space (Common Search Space, CSS). For example: the PBCH may indicate a legacy (legacy) CORESET #0 and a type 0 (type-0) CSS, and some remaining limited indication information may be used to determine the first PDCCH resource.

In the embodiment, the method can realize that the PBCH indicates the narrow bandwidth terminal to monitor the resource of the first PDCCH and the communication resource of the non-narrow bandwidth terminal, thereby saving transmission resources.

As an optional embodiment, the indication information of the PBCH is used to indicate at least one of the following:

whether the first PDCCH resource exists;

whether to perform the first PDCCH transmission;

frequency domain resources of the first PDCCH;

time domain resources of the first PDCCH;

-a subcarrier spacing (Subcarrier Spacing, SCS) corresponding to the first PDCCH.

The presence or absence of the first PDCCH resource may be whether the terminal is configured with the first PDCCH resource or whether the first PDCCH resource exists in a communication resource corresponding to a network side device that transmits the PBCH. The terminal determines a first PDCCH resource, for example, if the first PDCCH resource is indicated to exist: and determining the first PDCCH resource according to the synchronous signal resource, the second PDCCH resource or other contents indicated by the PBCH.

In some embodiments, the first PDCCH resource may exist by default.

Whether the first PDCCH is transmitted may be whether the network side device that transmits the PBCH transmits the first PDCCH, or indicate whether the terminal transmits the first PDCCH. The terminal determines a first PDCCH resource in case of indicating to perform a first PDCCH transmission, for example: and determining the first PDCCH resource according to the synchronous signal resource, the second PDCCH resource or other contents indicated by the PBCH.

In some embodiments, the first PDCCH transmission may be performed by default.

The indication information of the PBCH may be at least one of the following frequency domain resources of CORESET indicating the first PDCCH:

a starting Resource Block (RB), a number of RBs, a relative position of the starting RB with respect to a starting RB of the SSB/PSS/SSS, and a relative position of the starting RB with respect to an ending RB of the SSB/PSS/SSS.

The SCS corresponding to the PDCCH may be an SCS used for transmitting the first PDCCH, and the terminal may determine the first PDCCH according to a correspondence between the SCS and the first PDCCH resource, where the correspondence may be a protocol definition or a network side device configuration.

In this embodiment, the determination of the first PDCCH resource based on the indication information of the limited PBCH may be implemented.

In this embodiment, in the case that at least one of the above items is not indicated in the PBCH, the content that is not indicated may be defined or preconfigured by a protocol, or may be determined according to other resources or information, for example: and the first PDCCH resource exists by default, the first PDCCH transmission is performed by default, the frequency domain resource of the first PDCCH is determined according to the synchronous signal resource or the second PDCCH resource, the time domain resource of the first PDCCH is determined according to the synchronous signal resource or the second PDCCH resource, and the SCS corresponding to the first PDCCH is determined according to the synchronous signal resource or the second PDCCH resource.

As an optional implementation manner, the first PDCCH resource includes: and the frequency domain resource of CORESET of the first PDCCH.

The CORESET may be CORESET #0 or other CORESET.

In this embodiment, the frequency domain resources of the CORESET of the first PDCCH may be determined, so that the terminal listens to the PDCCH on the CORESET.

Optionally, the frequency domain resource of CORESET of the first PDCCH satisfies at least one of the following:

the frequency domain resource of the CORESET of the first PDCCH comprises all or part of RBs of the synchronization signal resource;

the RB number of the frequency domain resource of CORESET of the first PDCCH is y x N, and N is an integer greater than or equal to 1;

the initial RB index of the frequency domain resource of CORESET of the first PDCCH is y x M, and M is an integer greater than or equal to 0;

the total bandwidth of the synchronization signal resource and the frequency domain resource of the CORESET of the first PDCCH is less than or equal to the bandwidth capability of the narrow bandwidth terminal;

wherein y is a positive integer.

The RB that the frequency domain resource of the CORESET of the first PDCCH includes all or part of the synchronization signal resource may be that the RB occupied by the CORESET of the first PDCCH includes all or part of SSB resource/PSS resource/SSS resource. For example: the RB occupied by CORESET of the first PDCCH includes all frequency domain resources occupied by PSS/SSS and all or part of frequency domain resources occupied by PBCH. The frequency domain resource occupied by the PBCH is greater than or equal to X RBs, where X is a positive integer, for example, x=16.

In this embodiment, since the frequency domain resource of CORESET of the first PDCCH includes all or part of RBs of the synchronization signal resource, it is possible to reduce the frequency switching of the terminal for receiving the PDCCH and the synchronization signal.

Alternatively, in the embodiment of the present application, y is 6 or 12.

In this embodiment, since the RB number of the frequency domain resource of the CORESET of the first PDCCH is y×n, it is ensured that the RB number of the frequency domain resource of the CORESET of the first PDCCH is an integer multiple of y, so that the CORESET of the narrowband terminal and the CORESET of the non-narrowband terminal (legacy terminal) may coexist on the same time resource, so as to improve the resource utilization.

In this embodiment, since the initial RB index of the frequency domain resource of the CORESET of the first PDCCH is y×m, it is ensured that the initial RB index of the CORESET of the first PDCCH is an integer multiple of y, so that the CORESET of the narrowband terminal and the CORESET of the non-narrowband terminal (legacy terminal) may coexist on the same time resource, so as to improve the resource utilization.

In this embodiment, since the total bandwidth of the synchronization signal resource and the frequency domain resource of the CORESET of the first PDCCH is less than or equal to the bandwidth capability of the narrowband terminal, the terminal may not need to perform frequency switching when receiving the synchronization signal and monitoring the first PDCCH, so as to reduce frequency switching of the terminal, and reduce implementation complexity of the terminal.

Optionally, the frequency domain resource of CORESET of the first PDCCH further satisfies at least one of the following:

the frequency domain resource of CORESET of the first PDCCH is a plurality of continuous RBs, the initial RB index is the lowest or highest RB index in candidate RB indexes, and the candidate RB indexes are integer multiples of y;

the number of RBs of the frequency domain resource of CORESET of the first PDCCH is the number of candidate RBs with the largest bandwidth range, and the number of candidate RBs is an integer multiple of y;

the bandwidth range is a bandwidth range supported by the narrow bandwidth terminal.

In this embodiment, the lowest or highest RB index among the candidate RB indexes is implemented, and the frequency domain resource of CORESET of the first PDCCH is the lowest or highest frequency domain resource satisfying the integer multiple of the initial RB index y.

Or the initial RB is an RB which can meet the condition that the RB occupied by CORESET of the first PDCCH comprises all or part of SSB resources/PSS resources/SSS resources; if there are multiple candidate RBs meeting the requirements, the lowest or highest RB is used as the initial RB index of CORESET of the first PDCCH.

Or the initial RB is an RB capable of satisfying the bandwidth capability of the narrowband terminal and the total bandwidth of the synchronization signal resource and the frequency domain resource of the CORESET of the first PDCCH is less than or equal to the bandwidth capability of the narrowband terminal; if there are multiple candidate RBs meeting the requirements, the lowest or highest RB is used as the initial RB index of CORESET of the first PDCCH.

Preferably, the initial RB is an RB satisfying the above-described plurality of conditions. If there are multiple candidate RBs meeting the requirements, the lowest or highest RB is used as the initial RB index of CORESET of the first PDCCH.

The number of RBs of the frequency domain resource of CORESET of the first PDCCH may be the number of RBs candidate with the largest bandwidth range, the number of RBs of the frequency domain resource of CORESET of the first PDCCH may be the maximum y×n RBs less than the bandwidth range, and the value of N may be a positive integer, for example: and if the candidate RB number smaller than the bandwidth range comprises y 1 RBs, y 2 RBs, y 3 RBs and y 4 RBs, determining that the RB number of the frequency domain resource of the CORESET of the first PDCCH is y 4 RBs. Therefore, the RB number of the frequency domain resource of CORESET of the first PDCCH can be maximized, so that the monitoring performance of the narrow bandwidth terminal for monitoring the PDCCH is improved.

Optionally, in the case that the frequency domain resource of CORESET of the first PDCCH includes all or part of RBs of the synchronization signal resource, the frequency domain resource of CORESET of the first PDCCH further includes: and (3) the RBs are expanded in the high-frequency direction or the low-frequency direction of the synchronous signal resource.

In this embodiment, the RBs included in the CORESET of the first PDCCH may include the RB resources occupied by the SSB/PSS/SSS, that is, the same RBs exist in the CORESET of the first PDCCH and the SSB/PSS/SSS resources, in which case the high frequency direction or the low frequency direction of the RBs occupied by the SSB/PSS/SSS is extended up to an integer multiple of y×n RBs.

The RB that can be extended in the high frequency direction or the low frequency direction of the synchronization signal resource can improve flexibility of frequency domain resource allocation of CORESET of the first PDCCH.

Optionally, the frequency domain resources of CORESET of the first PDCCH are: and taking the target RB of the synchronous signal resource as a frequency domain resource determined by reference.

The target RB may be a start RB or an end RB of the SSB/PSS/SSS resource, so that the frequency domain resource of the CORESET of the first PDCCH may be determined with reference to the position of the start RB or the end RB of the SSB/PSS/SSS resource.

Optionally, the frequency domain resources of CORESET in the first PDCCH are: under the condition that the target RB of the synchronous signal resource is taken as a frequency domain resource determined by reference, the position relation between the frequency domain resource of CORESET of the first PDCCH and the target RB of the synchronous signal resource is determined by at least one of the following steps:

indication information of PBCH and indication information in SSB index.

In this embodiment, the indication of the above positional relationship by the indication information of the PBCH may be implemented, so that the introduction of other messages may be avoided, so as to save transmission overhead. And the indication information in the SSB index indicates the position relation, so that the SSB index can be reused, namely the indication information in the SSB index can indicate the SSB index and the position relation, and signaling overhead is saved. For example: the SSB index may be an SSB index carried by the indication information in the PBCH, so that the relative position relationship of the indication information of the PBCH can be reused, so as to save the overhead of the PBCH, for example, using bit indication in the SSB index bit field in the PBCH.

As an optional implementation manner, the first PDCCH resource includes at least one of the following:

the frequency domain resource of the first PDCCH is determined according to the frequency domain resource of the second PDCCH;

and determining the time domain resource of the first PDCCH according to the time domain resource of the second PDCCH.

The frequency domain resource of the first PDCCH determined according to the frequency domain resource of the second PDCCH may be a frequency domain resource determined according to a frequency domain location relationship of the frequency domain resource of the second PDCCH, for example: determining the initial/final RB index of the first PDCCH according to the initial/final RB index of the second PDCCH; the time domain resource of the first PDCCH determined according to the time domain resource of the second PDCCH may be a time domain resource determined according to a time domain position relationship of the time domain resource of the second PDCCH.

The frequency domain position relationship and the time domain position relationship may be defined by a protocol, or dynamically indicated, for example: indicated by at least one of:

indication information of PBCH and indication information in SSB index.

In this embodiment, since the frequency domain resource and the time domain resource of the first PDCCH are determined according to the frequency domain resource and the time domain resource of the second PDCCH, configuration overhead can be reduced.

Optionally, an offset value of an RB start/end RB index of the frequency domain resource of the first PDCCH relative to an RB start/end RB index in the frequency domain resource of the second PDCCH is y×k, y is a positive integer, and K is an integer greater than or equal to 0.

The offset value of the RB start/end RB index of the frequency domain resource of the first PDCCH with respect to the RB start/end RB index of the frequency domain resource of the second PDCCH may be y×k, or the offset value of the RB start RB index of the frequency domain resource of the first PDCCH with respect to the RB start/end RB index of the frequency domain resource of the second PDCCH may be y×k.

Because the offset value is y×k, the offset of the frequency domain resource of the first PDCCH and the frequency domain resource of the second PDCCH may meet the protocol requirement, so that the first PDCCH transmission and the second PDCCH transmission coexist, so as to improve the transmission performance of the PDCCH.

As an optional implementation manner, when the indication information of the PBCH indicates that the first PDCCH is transmitted and the frequency domain resource of the second PDCCH is less than or equal to the target bandwidth, the frequency domain resource of the first PDCCH is the frequency domain resource of the second PDCCH.

The target bandwidth may be a bandwidth supported by a narrow bandwidth terminal, for example: 5MHz or 10MHz.

In this embodiment, in the above case, the frequency domain resource of the first PDCCH may be the frequency domain resource of the second PDCCH, so as to save resource overhead.

As an alternative embodiment, the positional relationship between the time domain resources of the first PDCCH and the time domain resources of the second PDCCH is determined by at least one of:

indication information of PBCH and indication information in SSB index.

The above-mentioned positional relationship may be a time domain offset, wherein the time domain offset value is in units of frames, subframes, slots, or symbols.

In this embodiment, the time domain resource monitored by the first PDCCH may be indicated by the bit in the PBCH, and the time domain resource monitored by the first PDCCH may be indicated by the indication information using the SSB index field in the PBCH, so as to save the overhead of the PBCH.

As an alternative embodiment, the number of symbols of the time domain resource of the first PDCCH is the same as the number of symbols of the time domain resource of the second PDCCH;

and/or

And the monitoring time domain position of a first SSB index associated with the first PDCCH is the same as the monitoring time domain position of a second PDCCH associated with the first SSB index.

In this embodiment, the number of symbols of the first PDCCH and the number of symbols of the associated SSB index of the second PDCCH may be the same, so that configuration overhead for determining the first PDCCH resource may be saved.

As an alternative embodiment, the SCS corresponding to the first PDCCH is the same as the SCS corresponding to the second PDCCH; or alternatively

The SCS corresponding to the first PDCCH is the same as the SCS corresponding to the SSB.

The SCS corresponding to the second PDCCH may be indicated by a PBCH.

In this embodiment, since the SCS corresponding to the first PDCCH is the same as the SCS corresponding to the second PDCCH, or the SCS corresponding to the first PDCCH is the same as the SCS corresponding to the SSB, the configuration overhead of the first PDCCH may be saved.

In some embodiments, the terminal determines the configuration of coreset#0 by receiving the indication information of PBCH in SSB, and receives the second PDCCH listening configuration of system information, where the indication information of PBCH may indicate the configuration of the frequency domain resource that the second PDCCH listens to, such as including at least one of a starting RB and an RB number, where the maximum frequency domain bandwidth supported in some systems is generally close to and slightly lower than 20MHz; the above system information may indicate the configuration of slots and symbols monitored by the second PDCCH.

In some embodiments, due to the introduction of the narrow bandwidth terminal, the transmission of the first PDCCH needs to be completed within a narrower bandwidth, and in the case that the indication information in some PBCHs mostly already carries a large amount of other indication information, and the indication information of the second PDCCH transmission, the determination of the first PDCCH transmission related information may be given according to the limited indication information. If the first PDCCH, the SSB and the second PDCCH satisfy a certain positional relationship, the reception of the terminal is simplified, or multiplexing and coexistence between signals are realized.

In some embodiments, another description method of the frequency domain resource of the first PDCCH may be a CORESET resource of the first PDCCH, which are all resources in units of RBs; preferably, it is a continuous RB resource.

In some embodiments, CORESET resources may be used as frequency domain resources of BWP, so determining CORESET to which the first PDCCH listens in the present application may be described as determining BWP frequency domain resources.

The PDCCH resource determining method provided in the embodiment of the present application is illustrated by the following embodiments:

embodiment one:

the embodiment mainly describes that the frequency domain resource of the first PDCCH is determined according to the frequency domain resource of the second PDCCH as a reference, and the method specifically can be as follows:

in order to send the first PDCCH, the network side device may include corresponding indication information in the PBCH, to indicate whether the first PDCCH is sent; determining a CORESET (which may be hereinafter described as a first CORESET) frequency domain resource of the first PDCCH by an implicit method; alternatively, the RB number of CORESET of the first PDCCH may be indicated.

Wherein, the frequency domain resource of PDCCH is the RB resource occupied by CORESET; since protocol definition in some scenarios, the number of RBs occupied by CORESET is an integer multiple of 6, and the index of the starting RB is also an integer multiple of 6, the RB resources of CORESET monitored by the first PDCCH also satisfy the above-mentioned constraint, so as to achieve the purpose of coexistence with other PDCCH transmissions;

for terminals with bandwidth capability of x=5mhz or less, CORESET should occupy 24 RBs in the case of 15kHz subcarrier spacing; in the case of 30kHz subcarrier spacing, CORESET should occupy 12 RBs, where the bandwidth of the corresponding CORESET is 30khz×12×12=4.32 MHz, which is the maximum number of RBs less than 5MHz and an integer multiple of 6.

The CORESET start RB of the first PDCCH may be implicitly determined, for example: the CORESET start RB of the first PDCCH may satisfy at least one of the following conditions:

an RB that can contain either SSB or PSS/SSS occupancy;

the initial RB offset is an integer multiple of 6 RBs compared to the initial RB offset of the second PDCCH;

the start RB is the RB whose index value satisfies the above condition is the lowest or highest.

For example: as shown in fig. 3, since the initial RB of CORESET (CORESET # 0) of the second PDCCH is an integer multiple of 6, the initial RB of CORESET of the second PDCCH is a reference point, and thus the initial RB position of the first PDCCH can be determined while satisfying the RB index of 6.

Example 2:

the embodiment is mainly illustrated by displaying the first CORESET (i.e. the CORESET of the first PDCCH) frequency domain resource, which may specifically include the following two ways:

mode 1: displaying the position of the indication relative to CORESET #0

The frequency domain relative position relationship of the CORESET of the first PDCCH with respect to the starting RB or ending RB of CORESET #0 may be indicated in the PBCH; the relative positional relationship is in units of 6 RBs. The relative offset values are indicated in a plurality of values, e.g. 4 offset values { k1 x 6, k2 x 6, k3 x 6, k4 x 6} may be indicated by 2 bits. k1..k 4 may be predefined, e.g., {0,1,2,3}, {1,2,3,4}, {0,2,4,6}, etc.;

The indication may be by a bit in the PBCH. For example, up to 4 offset values may be indicated by 2 bits in SSB index in PBCH; or may indicate more possible offset values in combination with other bits in the PBCH, e.g. 2 bits in SSB index in combination with another 1 bit may indicate a maximum of 8 offset values;

the method can indicate a plurality of possible offset values through the PBCH, so that the position of CORESET of the first PDCCH can be indicated more flexibly; the bandwidth of the first CORESET may or may not include SSB/PSS/SSS resources.

In this embodiment, the offset value of 6 RBs is a frequency offset value with the subcarrier spacing of coreset#0 as a unit; the offset value is not necessarily in units of 6 RBs if other subcarrier spacing is in units. For example, if the subcarrier spacing of CORESET #0 is 30kHz and the unit indicating the offset value is 15kHz and the subcarrier spacing of CORESET #0 and the first CORESET is 30kHz, then the offset value and need be integer multiples of 12 RBs.

Mode 2: displaying the position of the indication relative to the SSB

The frequency domain relative position relationship of the initial RB or the end RB of the first PDCCH with respect to the SSB/PSS/SSS resources may be indicated in the PBCH; in some indication information of the PBCH, a frequency domain resource indication of coreset#0 is already contained, and is a frequency domain resource determined by a relative position with the SSB; thus, on this basis, the frequency domain resources of the first CORESET may be further indicated;

example 3:

the embodiment mainly uses the frequency domain resource according to the SSB/PSS/SSS as a reference, and implicitly determines the frequency domain resource of the first PDCCH for illustration, which may be specifically as follows:

if the frequency domain resource of CORESET is satisfied, the SSB/PSS/SSS resource is completely contained in the bandwidth of CORESET, or the sum of the bandwidths of CORESET and SSB/PSS/SSS resource is less than or equal to the bandwidth capability of the terminal, then the terminal does not need to modify the received frequency position when receiving, thereby reducing power consumption, time delay and implementation complexity.

When the subcarrier spacing of the SSB is 30kHz, the bandwidth of the SSB is 30khz×12×20=7.2 MHz, and exceeds the terminal bandwidth capability of 5MHz, then in order to avoid the frequency switching of the terminal, one method is that the bandwidth of the first CORESET can include the bandwidth of the PSS/SSS; another approach is that the total bandwidth of the first CORESET and PSS/SSS resources is within 5MHz of the bandwidth.

Mode 1: the first CORESET includes the bandwidth of PSS/SSS

Since the number of Resource Elements (REs) occupied by PSS/SSS is 127, the number of RBs occupied by PSS/SSS is 11 or 12 RBs depending on the starting position of SSB mapping.

If the bandwidth occupied by PSS/SSS is 12 RBs, the transmission resource of CORESET is the same resource of 12 RBs;

if the PSS/SSS occupies 11 RBs, the transmission resource of CORESET is the 11 RBs, and further expands 1 RB toward the high frequency direction or 1 RB toward the low frequency direction.

Mode 2: the total bandwidth of the first CORESET and PSS/SSS is less than 5MHz

The frequency domain location of the first CORESET as described above can better coexist with other PDCCH transmissions if it is satisfied that the starting RB is an integer multiple of 6 RBs. The index of the initial RB is not necessarily equal to an integer multiple of 6, which is occupied by the PSS/SSS; then, if the initial RB index of the first CORESET still needs to be satisfied to be an integer multiple of 6, the total signal bandwidth of CORESET and PSS/SSS will be extended; then it is also necessary to ensure that the total signal bandwidth is less than or equal to 5MHz;

FIGS. 4 and 5 list some frequency-adjacent positional relationships of PSS/SSS and the first CORESET in the case where PSS/SSS is transmitted on 11 and 12 RBs;

By referring to fig. 4 and 5, where the reference RB is an RB in the resource grid satisfying an integer multiple of 6 in RB index, it can be seen from fig. 4 and 5 that in case of different offset values {0,1,2,3,4,5} of SSB and reference RB, most deployments can satisfy PSS/SSS and the total bandwidth of the first CORESET is less than 5MHz.

Since the index value of the start RB of CORESET #0 is an integer multiple of 6, and the start RB of CORESET #0 is determined based on the start RB of SSB, the mapping position of PSS/SSS in SSB is determined, and the terminal can determine the positional relationship between the start RB of PSS/SSS and the reference RB based on these information.

The terminal can determine the RB resource of the first COESET meeting the condition according to the rule based on the relative position relation of the PSS/SSS and the reference RB, namely, the position requiring the initial RB of the first COESET to meet the PSS/SSS and the total bandwidth of the first COESET is smaller than 5 MHz; as shown in fig. 5, if the start RB and the reference RB of the PSS and the SSS are offset by 5 RBs, the start RB of the second CORESET is the second RB occupied by the PSS/SSS, in which case it can be ensured that the total bandwidth occupied is less than 5MHz. And a unique one of the second CORESETs can be determined.

It should be noted that, in fig. 4 and fig. 5, although the total number of RBs occupied by PSS/SSS is 12 RBs and the bandwidth occupied by 12 RBs is 5.04MHz in some cases, since PSS/SSS does not occupy 12 REs in the initial RB or the last RB, the total bandwidth may still be less than 5MHz.

Therefore, only the indication in the PBCH contains the first CORESET, and the terminal can determine the frequency domain position of the first CORESET according to the implicit rule;

it should be noted that, although the offset values of the PSS/SSS and the reference RB are not appropriate due to the positional relationship between some SSBs and RB resource cells, the total bandwidth of PSS/sss+coreset smaller than 5MHz cannot be found, but the network implementation may appropriately adjust the positions of SSBs or resource cells, so that the terminal may determine the first CORESET position meeting the conditions through the above rule.

In this embodiment, the offset value of 6 RBs is a frequency offset value with the subcarrier spacing of coreset#0 as a unit; the offset value is not necessarily in units of 6 RBs if other subcarrier spacing is in units. For example, if the subcarrier spacing of CORESET #0 is 30kHz and the unit indicating the offset value is 15kHz and the subcarrier spacing of CORESET #0 and the second CORESET is 30kHz, then the offset value and need be integer multiples of 12 RBs.

Example 4:

the embodiment mainly uses the time domain resource of the first PDCCH as a reference to determine the frequency domain resource of the second PDCCH for illustration, and specifically can be as follows:

in addition to indicating the frequency domain resource of the first CORESET, the terminal may also determine the time resource monitored by the first PDCCH; in order to avoid PDCCH listening at the same listening occasion (monitoring occasion, MO) as the second PDCCH, the MO of the first PDCCH may be determined from the relative offset of the MO of the second PDCCH;

For example, the MO of the first PDCCH may be in symbols, slots, subframes, milliseconds, frames, fields according to a time offset of the second PDCCH;

the offset may be indicated by a bit in the PBCH. For example, up to 4 offset values may be indicated by 2 bits in SSB index in PBCH; or may indicate more possible offset values in combination with other bits in the PBCH, e.g. 2 bits in SSB index in combination with another 1 bit may indicate a maximum of 8 offset values.

In the embodiment of the invention, the terminal supporting the narrowband terminal capability and the time domain resource and the frequency domain resource monitored by the PDCCH are determined based on the indication information of the limited PBCH, and in some embodiments, the coexistence of the PDCCH transmission of the narrowband terminal and other terminals can be realized, or the frequency switching of the terminal is reduced, so that the realization complexity of the terminal is reduced.

Referring to fig. 6, fig. 6 is a block diagram of a PDCCH resource determining apparatus provided in an embodiment of the present application, as shown in fig. 6, including:

a determining module 601, configured to determine a first PDCCH resource based on a target object, where the first PDCCH resource is a resource for a narrow bandwidth terminal to monitor the first PDCCH, and the target object includes at least one of the following:

Indication information of a physical broadcast channel PBCH;

synchronization signal resources, the synchronization signal resources comprising: a synchronization signal block SSB resource, or a primary synchronization signal PSS resource, or a secondary synchronization signal SSS resource;

Optionally, the PBCH is further configured to indicate a communication resource of the non-narrowband terminal.

Optionally, the indication information of the PBCH is used to indicate at least one of the following:

whether the first PDCCH resource exists;

whether to perform the first PDCCH transmission;

frequency domain resources of the first PDCCH;

time domain resources of the first PDCCH;

and a subcarrier interval SCS corresponding to the first PDCCH.

Optionally, the first PDCCH resource includes: and the control resource set CORESET of the first PDCCH comprises frequency domain resources.

the frequency domain resource of the CORESET of the first PDCCH comprises all or part of the resource block RB of the synchronization signal resource;

wherein y is a positive integer.

Alternatively, y is 6 or 12.

indication information of PBCH and indication information in SSB index.

Optionally, the first PDCCH resource includes at least one of:

Optionally, the indication information of the PBCH indicates the first PDCCH to transmit, and when the frequency domain resource of the second PDCCH is less than or equal to the target bandwidth, the frequency domain resource of the first PDCCH is the frequency domain resource of the second PDCCH.

Optionally, the positional relationship between the time domain resource of the first PDCCH and the time domain resource of the second PDCCH is determined by at least one of: indication information of PBCH and indication information in SSB index;

And/or the number of the groups of groups,

the number of symbols of the time domain resource of the first PDCCH is the same as the number of symbols of the time domain resource of the second PDCCH; and/or

Optionally, the SCS corresponding to the first PDCCH is the same as the SCS corresponding to the second PDCCH; or alternatively

Optionally, the above device further comprises at least one of the following:

and the monitoring module is used for monitoring the first PDCCH on the first PDCCH resource.

The PDCCH resource determining device can improve the resource allocation effect.

The PDCCH resource determining apparatus in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the terminals may include, but are not limited to, the types of terminals listed in embodiments of the present application, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the present application are not specifically limited.

The PDCCH resource determining apparatus provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 2, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Optionally, as shown in fig. 7, the embodiment of the present application further provides a communication device 700, including a processor 701 and a memory 702, where the memory 702 stores a program or instructions that can be executed on the processor 701, for example, when the communication device 700 is a terminal, the program or instructions implement, when executed by the processor 701, the steps of the embodiment of the communication operation execution method described above, and achieve the same technical effects.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor or the communication interface is used for determining a first PDCCH resource based on a target object, the first PDCCH resource is a resource for a narrow bandwidth terminal to monitor the first PDCCH, and the target object comprises at least one of the following: indication information of the PBCH; synchronization signal resources, the synchronization signal resources comprising: SSB resources, or PSS resources, or SSS resources; and the second PDCCH resource is indicated by the PBCH and used for the second PDCCH for system information transmission. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 8 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 800 includes, but is not limited to: at least part of the components of the radio frequency unit 801, the network module 802, the audio output unit 803, the input unit 804, the sensor 805, the display unit 806, the user input unit 807, the interface unit 808, the memory 809, and the processor 810, etc.

Those skilled in the art will appreciate that the terminal 800 may further include a power source (e.g., a battery) for powering the various components, and that the power source may be logically coupled to the processor 810 by a power management system for performing functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 8 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 804 may include a graphics processing unit (Graphics Processing Unit, GPU) 8041 and a microphone 8042, with the graphics processing unit 8041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 807 includes at least one of a touch panel 8071 and other input devices 8072. Touch panel 8071, also referred to as a touch screen. The touch panel 8071 may include two parts, a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 801 may transmit the downlink data to the processor 810 for processing; in addition, the radio frequency unit 801 may send uplink data to the network side device. In general, the radio frequency unit 801 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 809 may be used to store software programs or instructions and various data. The memory 809 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 809 may include volatile memory or nonvolatile memory, or the memory 809 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 809 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 810 may include one or more processing units; optionally, the processor 810 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 810.

The processor 810 is configured to determine a first PDCCH resource based on a target object, where the first PDCCH resource is a resource for a narrow bandwidth terminal to monitor the first PDCCH, and the target object includes at least one of the following:

indication information of a physical broadcast channel PBCH;

whether the first PDCCH resource exists;

Whether to perform the first PDCCH transmission;

frequency domain resources of the first PDCCH;

time domain resources of the first PDCCH;

and a subcarrier interval SCS corresponding to the first PDCCH.

wherein y is a positive integer.

Alternatively, y is 6 or 12.

indication information of PBCH and indication information in SSB index.

Optionally, the first PDCCH resource includes at least one of:

and/or the number of the groups of groups,

Optionally, the above device further comprises at least one of the following:

The terminal can improve the resource allocation effect.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the processes of the embodiment of the PDCCH resource determination method are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is configured to run a program or an instruction, implement each process of the embodiment of the PDCCH resource determining method, and achieve the same technical effect, so as to avoid repetition, and not be repeated here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the PDCCH resource determination method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated here.

The embodiment of the application also provides a transmission determining system, which comprises: the terminal and the network side device, the terminal can be used for executing the steps of the PDCCH resource determining method.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. The method for determining the PDCCH resource of the physical downlink control channel is characterized by comprising the following steps of

indication information of a physical broadcast channel PBCH;

2. The method of claim 1, wherein the PBCH is further used to indicate communication resources for non-narrowband terminals.

3. The method of claim 1, wherein the indication information of the PBCH is used to indicate at least one of:

whether the first PDCCH resource exists;

whether to perform the first PDCCH transmission;

frequency domain resources of the first PDCCH;

time domain resources of the first PDCCH;

and a subcarrier interval SCS corresponding to the first PDCCH.

4. The method of any of claims 1-3, wherein the first PDCCH resource comprises: and the control resource set CORESET of the first PDCCH comprises frequency domain resources.

5. The method of claim 4, wherein frequency domain resources of CORESET of the first PDCCH satisfy at least one of:

wherein y is a positive integer.

6. The method of claim 5, wherein the frequency domain resources of CORESET of the first PDCCH further satisfy at least one of:

7. The method of claim 5, wherein in the case where the frequency domain resources of CORESET of the first PDCCH include all or part of RBs of the synchronization signal resources, the frequency domain resources of CORESET of the first PDCCH further comprise: and (3) the RBs are expanded in the high-frequency direction or the low-frequency direction of the synchronous signal resource.

8. The method of claim 5, wherein y is 6 or 12.

9. The method of claim 4, wherein the frequency domain resources of CORESET of the first PDCCH are: and taking the target RB of the synchronous signal resource as a frequency domain resource determined by reference.

10. The method of claim 7, wherein frequency domain resources of CORESET at the first PDCCH are: under the condition that the target RB of the synchronous signal resource is taken as a frequency domain resource determined by reference, the position relation between the frequency domain resource of CORESET of the first PDCCH and the target RB of the synchronous signal resource is determined by at least one of the following steps:

indication information of PBCH and indication information in SSB index.

11. The method of any of claims 1-3, wherein the first PDCCH resource comprises at least one of:

12. The method of claim 10, wherein an offset value of an RB start/end RB index of the frequency domain resource of the first PDCCH relative to an RB start/end RB index in the frequency domain resource of the second PDCCH is y x K, y being a positive integer, K being an integer greater than or equal to 0.

13. The method of any one of claims 1 to 3, wherein the frequency domain resource of the first PDCCH is the frequency domain resource of the second PDCCH in a case where the first PDCCH transmission is indicated in the indication information of the PBCH and the frequency domain resource of the second PDCCH is less than or equal to a target bandwidth.

14. The method of any of claims 1 to 3, wherein a positional relationship between time domain resources of the first PDCCH and time domain resources of the second PDCCH is determined by at least one of: indication information of PBCH and indication information in SSB index;

and/or the number of the groups of groups,

the number of symbols of the time domain resource of the first PDCCH is the same as the number of symbols of the time domain resource of the second PDCCH;

And/or

15. The method according to any one of claims 1 to 3, wherein SCS corresponding to the first PDCCH is identical to SCS corresponding to the second PDCCH; or alternatively

16. The physical downlink control channel PDCCH resource determining device is characterized by comprising

indication information of a physical broadcast channel PBCH;

17. The apparatus of claim 16, wherein the PBCH is further for indicating communication resources for non-narrowband terminals.

18. The apparatus of claim 16, wherein the indication information of the PBCH is used to indicate at least one of:

whether the first PDCCH resource exists;

whether to perform the first PDCCH transmission;

frequency domain resources of the first PDCCH;

time domain resources of the first PDCCH;

and a subcarrier interval SCS corresponding to the first PDCCH.

19. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, performs the steps of the PDCCH resource determination method of any of claims 1 to 15.

20. A readable storage medium, characterized in that it stores thereon a program or instructions that, when executed by a processor, implement the steps of the PDCCH resource determination method of any of claims 1 to 15.