Method for determining control channel element (CCE), communication device, communication system, and storage medium

Abstract

The present disclosure relates to a method for determining a control channel element (CCE), a terminal, and a network device. The method comprises: on the basis of one or more configuration parameters of a search space, determining a first parameter, the first parameter being used for determining a CCE occupied by a candidate physical downlink control channel (PDCCH) corresponding to a first aggregation level in the search space. Therefore, the CCE occupied by the candidate PDCCH can be effectively determined on the basis of the configuration parameters of the search space.

Description

Control channel element CCE determination method and communication equipment, communication system, and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a control channel element (CCE) determination method, communication equipment, communication system, and storage medium. Background Art

[0002] The search space of the New Radio Physical Downlink Control Channel (NR-PDCCH) includes a dedicated search space and a public search space. The search space can be configured with a control channel element (CCE), an aggregation level (AL), and the number of candidate PDCCHs corresponding to the AL. The number of CCEs that constitute a candidate PDCCH is called AL. The ALs available for NR PDCCH include 1, 2, 4, 8, and 16. Each aggregation level has a corresponding number of candidate PDCCHs. In the NR system, the ALs supported by most search spaces and the number of candidate PDCCHs corresponding to the AL can be flexibly configured.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide a control channel element CCE determination method, network device, terminal, device, chip system, storage medium, computer program and computer program product, which can be applied in the field of communication technology to solve the technical problem that "the related technology cannot effectively determine the CCE occupied by the candidate PDCCH based on the configuration parameters of the search space".

[0005] The present disclosure proposes a control channel element (CCE) determination method, a communication device, a communication system, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a control channel element CCE determination method is proposed, which is executed by a network device, including: determining a first parameter based on one or more configuration parameters of a search space, wherein the first parameter is used to determine the CCE occupied by a candidate physical downlink control channel PDCCH corresponding to a first aggregation level in the search space.

[0007] According to the second aspect of an embodiment of the present disclosure, a control channel element CCE determination method is proposed, which is executed by a terminal, including: determining a first parameter based on one or more configuration parameters of a search space, wherein the first parameter is used to determine the CCE occupied by a candidate physical downlink control channel PDCCH corresponding to a first aggregation level AL in the search space.

[0008] According to the third aspect of an embodiment of the present disclosure, a method for determining a control channel element CCE is proposed, including: a network device or a terminal determines a first parameter based on one or more configuration parameters of a search space, wherein the first parameter is used to determine the CCE occupied by a candidate physical downlink control channel PDCCH corresponding to a first aggregation level in the search space.

[0009] According to the fourth aspect of an embodiment of the present disclosure, a network device is proposed, including: a processing module, used to determine a first parameter based on one or more configuration parameters of the search space, wherein the first parameter is used to determine the CCE occupied by the candidate physical downlink control channel PDCCH corresponding to the first aggregation level in the search space.

[0010] According to the fifth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: a processing module for determining a first parameter based on one or more configuration parameters of a search space, wherein the first parameter is used to determine the CCE occupied by a candidate physical downlink control channel PDCCH corresponding to a first aggregation level in the search space.

[0011] According to the sixth aspect of an embodiment of the present disclosure, a communication device is proposed, comprising: one or more processors; wherein the processor is used to call instructions so that the communication device executes the control channel element CCE determination method of any one of the first aspect, the second aspect, and the third aspect.

[0012] According to the seventh aspect of an embodiment of the present disclosure, a communication system is proposed, characterized in that it includes a network device and a terminal, wherein the network device is configured to implement the control channel element CCE determination method of the first aspect, and the terminal is configured to implement the control channel element CCE determination method of the second aspect.

[0013] According to the eighth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions, and is characterized in that when the instructions are executed on a communication device, the communication device executes a control channel element CCE determination method as described in any one of the first aspect, the second aspect, and the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background technology, the drawings required for use in the embodiments of the present disclosure or the background technology will be described below.

[0015] FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0016] FIG2A is an interactive schematic diagram illustrating a method for determining a control channel element (CCE) according to an embodiment of the present disclosure;

[0017] FIG2B is an interactive schematic diagram illustrating a method for determining a control channel element (CCE) according to another embodiment of the present disclosure;

[0018] FIG3A is an interactive schematic diagram illustrating a method for determining a control channel element (CCE) according to another embodiment of the present disclosure;

[0019] FIG3B is an interactive schematic diagram illustrating a method for determining a control channel element CCE according to another embodiment of the present disclosure;

[0020] FIG4A is an interactive schematic diagram illustrating a method for determining a control channel element (CCE) according to another embodiment of the present disclosure;

[0021] FIG4B is an interactive schematic diagram illustrating a method for determining a control channel element CCE according to yet another embodiment of the present disclosure;

[0022] FIG5 is an interactive schematic diagram illustrating a method for determining a control channel element CCE according to yet another embodiment of the present disclosure;

[0023] FIG6A is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure;

[0024] FIG6B is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure;

[0025] FIG7A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure;

[0026] FIG7B is a schematic diagram of the structure of the chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] The present disclosure provides a method and apparatus for determining a control channel element (CCE), a communication device, a communication system, and a storage medium. In some embodiments, the terms "control channel element CCE determination method" and "information processing method" and "communication method" are interchangeable; "control channel element CCE determination apparatus" and "information processing apparatus" and "communication apparatus" are interchangeable; and "information processing system" and "communication system" are interchangeable.

[0028] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0029] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0030] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0031] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0032] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0033] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0034] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0035] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0036] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0037] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0038] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0039] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", "above" and the like can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below" and the like can be replaced with each other.

[0040] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0041] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0042] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0043] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0044] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0045] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0046] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1, the communication system 100 may include a terminal 101 and a network device 102. The network device 102 may include at least one of an access network device and a core network device.

[0047] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0048] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB) in a 5G communication system, a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a WiFi system, but is not limited thereto.

[0049] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0050] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0051] In some embodiments, a core network device may be a single device comprising one or more network elements, or may be a plurality of devices or device groups, each comprising all or part of one or more network elements. A network element may be virtual or physical. The core network may, for example, comprise at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0052] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0053] The following embodiments of the present disclosure may be applied to the communication system 100 shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0054] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0055] Optionally, the search space is usually defined in a Control Resource Set (CORESET), which includes multiple CCEs. To determine the CCEs occupied by the search space within a CORESET, a hash function is used in the protocol. The hash function is as follows:

[0056] in, represents the time slot number in the wireless frame, μ represents the subcarrier spacing parameter, f represents the wireless frame, The s in it represents the time slot, L represents the aggregation level, is the randomization parameter, N CCE,p Indicates the number of CCEs contained in the control resource set CORESET p, p represents the index of CORESET, n CI is the carrier number, i is equal to 0, 1, ..., L-1, Indicates the number of candidate PDCCHs with aggregation level L in search space s. CORESET p is associated with search space s. is the carrier n CI The number of candidate PDCCHs with aggregation level L in the search space s, mod represents the remainder function, Indicates rounding down.

[0057] Optionally, when calculating the CCEs occupied by the search space, is To determine, among them, Indicates the number of candidate PDCCHs corresponding to the aggregation level L in the search space s on the current primary carrier. That is, the number of candidate PDCCHs corresponding to the aggregation level L in the search space s on the current primary carrier is determined. When DCI format 2-0 with a transmission slot format indicator (SFI) is configured for some search spaces (such as the Common Search Space (CSS)), DCI format 2-0 is a possible downlink control information format (DCI format). At this time, the aggregation level corresponding to DCI format 2-0 and the number of candidate PDCCHs corresponding to the aggregation level are configured by nrofCandidates-SFI. The search space may also contain other DCI formats, such as DCI format 0_0 or DCI format 1-0. The aggregation levels corresponding to these two formats of DCI and the number of candidate PDCCHs corresponding to the aggregation level are configured by nrofCandidates. The aggregation levels used by different DCI formats and the number of candidate PDCCHs used by different DCI formats at the same aggregation level may be different. Therefore, it is necessary to define parameters for determining the CCE occupied by the candidate PDCCH to support the effective determination of the CCE occupied by the candidate PDCCH based on the configuration parameters of the search space.

[0058] In the embodiment of the present disclosure, the above formula can be defined based on one or more configuration parameters of the search space. Based on the redefinition Determine the CCEs occupied by candidate physical downlink control channels (PDCCHs) corresponding to the first aggregation level in the search space. In the disclosed embodiments, there is no need to rely on the number of candidate PDCCHs corresponding to the aggregation level L in the search space s on the current primary carrier, effectively achieving determination of the CCEs occupied by candidate PDCCHs based on the configuration parameters of the search space.

[0059] Optionally, some search spaces may include multiple DCI formats, and the number of ALs and candidate PDCCHs corresponding to different DCI formats may be independently configured.

[0060] Optionally, a candidate PDCCH may also be referred to as a PDCCH candidate.

[0061] Optionally, the degree of aggregation may also be referred to as the aggregation grade or aggregation level.

[0062] Optionally, the configuration parameters of the search space may be, for example, nrofCandidates, nrofCandidates-SFI, etc. nrofCandidates may be used to configure the degree of aggregation and the number of candidate PDCCHs corresponding to the degree of aggregation. Unless the degree of aggregation and the number of candidate PDCCHs corresponding to the degree of aggregation are specified for a certain DCI format, the degree of aggregation and the number of candidate PDCCHs configured by nrofCandidates apply to all DCI formats. nrofCandidates-SFI is used to indicate the degree of aggregation and the number of candidate PDCCHs corresponding to the degree of aggregation under DCI format 2-0. Of course, the search space may also have configuration parameters in any other possible form.

[0063] FIG2A is an interactive diagram illustrating a method for determining a control channel element (CCE) according to an embodiment of the present disclosure. As shown in FIG2A , the present disclosure embodiment relates to a method for determining a control channel element (CCE), which can be used in a communication system 100. The method includes:

[0064] Step S2101: The network device determines a first parameter according to one or more configuration parameters of the search space.

[0065] The search space may have one or more configuration parameters.

[0066] In some embodiments, the configuration parameters are associated with at least one downlink control information (DCI) format, and different configuration parameters are associated with different DCI formats, thereby effectively improving the flexibility and configuration effect of the configuration parameters.

[0067] In some embodiments, the configuration parameters may be associated with one DCI format or multiple DCI formats, and different configuration parameters may be associated with different DCI formats.

[0068] In some embodiments, the configuration parameters are used to configure the terminal with the aggregation level to be monitored based on the DCI format and the number of candidate PDCCHs corresponding to the aggregation level. This allows the terminal to clearly identify the DCI format to be monitored, the aggregation level to be monitored under that DCI format, and the number of candidate PDCCHs corresponding to the aggregation level.

[0069] In some embodiments, the aggregation level required to be monitored based on the DCI format configured for the terminal may be the same as or different from the first aggregation level. There may also be multiple aggregation levels required to be monitored, and the multiple aggregation levels required to be monitored may include the first aggregation level, without limitation.

[0070] In some embodiments, the configuration parameters include any of the following: a first configuration parameter, wherein the first configuration parameter is used to configure the degree of aggregation and the number of candidate PDCCHs corresponding to the degree of aggregation (the number of candidate PDCCHs and the degree of aggregation configured by the first configuration parameter are applicable to all DCI formats, except where a specific value is specified for a certain DCI format, or a specific DCI format is specified for a certain degree of aggregation and the number of candidate PDCCHs); a second configuration parameter, wherein the second configuration parameter is used to configure the degree of aggregation under DCI format 2-0 and the number of candidate PDCCHs corresponding to the degree of aggregation; a third configuration parameter, wherein the third configuration parameter is used to configure the degree of aggregation under DCI format 2-4 and the number of candidate PDCCHs corresponding to the degree of aggregation; a fourth configuration parameter, wherein the fourth configuration parameter is used to configure the degree of aggregation under DCI format 2-5 and the number of candidate PDCCHs corresponding to the degree of aggregation; a fifth configuration parameter, wherein the fifth configuration parameter is used to configure the degree of aggregation under DCI format 2-7 and the number of candidate PDCCHs corresponding to the degree of aggregation. Therefore, the first parameter can be determined based on the one or more configuration parameters mentioned above, so as to accurately and flexibly determine the CCEs occupied by the candidate physical downlink control channels PDCCH corresponding to the first aggregation level in the search space.

[0071] In some embodiments, the first configuration parameter may be, for example, an nrofCandidates parameter in some communication protocols.

[0072] In some embodiments, the second configuration parameter may be, for example, an nrofCandidates-SFI parameter in some communication protocols.

[0073] In some embodiments, the third configuration parameter may be, for example, an nrofCandidates-CI parameter in some communication protocols.

[0074] In some embodiments, the fourth configuration parameter may be, for example, an nrofCandidates-IAB parameter in some communication protocols.

[0075] In some embodiments, the fifth configuration parameter may be, for example, an nrofCandidates-PEI parameter in some communication protocols.

[0076] In some embodiments, the first parameter may be used to indicate the number of candidate PDCCHs in the search space s with an aggregation level of L. That is, the first parameter indicates the search space s, the aggregation level L, and the number of candidate PDCCHs corresponding to the aggregation level L.

[0077] In some embodiments, the first parameter may be used to determine CCEs occupied by candidate physical downlink control channels (PDCCHs) corresponding to the first aggregation level in the search space, so as to effectively determine CCEs occupied by candidate PDCCHs based on configuration parameters of the search space.

[0078] In some embodiments, the first parameter may be, for example,

[0079] in, represents the time slot number in the wireless frame, μ represents the subcarrier spacing parameter, f represents the wireless frame, The s in it represents the time slot, L represents the aggregation level, is the randomization parameter, N CCE,p Indicates the number of CCEs contained in the control resource set CORESET p, p represents the index of CORESET, n CI is the carrier number, i is equal to 0, 1, ..., L-1, Indicates the number of candidate PDCCHs with aggregation level L in search space s. CORESET p is associated with search space s. is the carrier n CI The number of candidate PDCCHs with aggregation level L in the search space s, mod represents the remainder function, Indicates rounding down.

[0080] In some embodiments, the network device may determine the first parameter based on a configuration parameter of the search space. Alternatively, the first parameter may be determined based on multiple configuration parameters of the search space. The configuration parameter may specifically include a configuration parameter of the first aggregation level. This can effectively improve the accuracy and flexibility of determining the first parameter.

[0081] In some embodiments, the network device may determine the method for determining the first parameter based on the number of configuration parameters included in the search space, and determine the first parameter based on the determination method.

[0082] In some embodiments, when the number of configuration parameters including the first aggregation level is one, the first parameter is determined based on the configuration parameter including the first aggregation level. For example, if the search space has one configuration parameter, and the configuration parameter configures at least one DCI format, at least one aggregation level for each DCI format, and the number of candidate PDCCHs corresponding to each aggregation level, and the at least one aggregation level includes the first aggregation level, the first parameter may be determined based on the one configuration parameter. For example, the first aggregation level and the number of candidate PDCCHs corresponding to the first aggregation level in the one configuration parameter are used as the first parameter.

[0083] In some embodiments, when there are multiple configuration parameters including the first aggregation level, the first parameter is determined based on a target configuration parameter among the multiple configuration parameters including the first aggregation level. For example, the search space has multiple configuration parameters, and each configuration parameter is configured with at least one DCI format, at least one aggregation level under each DCI format, and the number of candidate PDCCHs corresponding to each aggregation level, and at least one aggregation level in each configuration parameter includes the first aggregation level. In this case, the first parameter can be determined based on the target configuration parameter among the multiple configuration parameters. For example, the number of candidate PDCCHs corresponding to the first aggregation level in each configuration parameter can be determined, and a number of candidate PDCCHs can be selected from the multiple numbers of candidate PDCCHs, and the first aggregation level and the selected number of candidate PDCCHs corresponding to the first aggregation level can be used as the first parameter.

[0084] Therefore, when there is only one configuration parameter including the first degree of aggregation, the first parameter is determined based on the configuration parameter including the first degree of aggregation; when there are multiple configuration parameters including the first degree of aggregation, the first parameter is determined based on the target configuration parameter among the multiple configuration parameters including the first degree of aggregation. This effectively improves the flexibility and accuracy of first parameter determination, effectively adapts to the actual situation of configuration parameters in the search space, and expands the scope of application.

[0085] In some embodiments, the target configuration parameter is the configuration parameter with the largest value for the number of candidate PDCCHs corresponding to the first aggregation level among multiple configuration parameters including the first aggregation level. For example, the number of candidate PDCCHs corresponding to the first aggregation level in each configuration parameter can be determined, and the number of candidate PDCCHs with the largest number can be selected from the multiple numbers of candidate PDCCHs. The configuration parameter to which the selected number of candidate PDCCHs belongs is used as the target configuration parameter. This effectively improves the accuracy of determining the target configuration parameter, further supporting improvements in the accuracy of determining the first parameter.

[0086] In some embodiments, the search space is a common search space, thereby enabling the determination of CCEs occupied by candidate PDCCHs based on configuration parameters of the common search space.

[0087] In some embodiments, the search space is a Type 3 Common Search Space (Type3 CSS).

[0088] In step S2102, the network device determines, according to the first parameter, CCEs occupied by candidate physical downlink control channels PDCCH corresponding to the first aggregation level in the search space.

[0089] In some embodiments, after determining the first parameter, the network device may further refer to the first parameter to determine CCEs occupied by candidate physical downlink control channels PDCCH corresponding to the first aggregation level in the search space.

[0090] In some embodiments, the network device determines Afterwards, you can refer to To determine CCEs occupied by candidate physical downlink control channels PDCCH corresponding to the first aggregation level in the search space.

[0091] In some embodiments, the following formula can be used for processing In order to determine the CCEs occupied by the candidate physical downlink control channel PDCCH corresponding to the first aggregation level in the search space. The first parameter is

[0092] in, represents the time slot number in the wireless frame, μ represents the subcarrier spacing parameter, f represents the wireless frame, The s in it represents the time slot, L represents the aggregation level, is the randomization parameter, N CCE,p Indicates the number of CCEs contained in the control resource set CORESET p, p represents the index of CORESET, n CI is the carrier number, i is equal to 0, 1, ..., L-1, Indicates the number of candidate PDCCHs with aggregation level L in search space s. CORESET p is associated with search space s. is the carrier n CI The number of candidate PDCCHs with aggregation level L in the search space s, mod represents the remainder function, Indicates rounding down.

[0093] Therefore, support based on The CCEs occupied by the candidate physical downlink control channels PDCCH corresponding to the first aggregation level in the search space can be accurately and flexibly determined.

[0094] Step S2103 : The network device determines a transmission resource location of the target DCI format from the first N candidate resource locations among the M candidate resource locations.

[0095] In some embodiments, after determining the first parameter, if the network device determines that M is greater than N, it may further determine the transmission resource location of the target DCI format from the first N candidate resource locations among the M candidate resource locations. M is equal to the number of candidate PDCCHs corresponding to the first aggregation level indicated by the first parameter, and N is equal to the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal. This enables accurate determination of the transmission resource location of the target DCI format.

[0096] In some embodiments, the target DCI format may be any possible DCI format.

[0097] In some embodiments, the candidate resource location refers to the location of the CCE resource occupied by the candidate PDCCH.

[0098] In some embodiments, M is the same as the number of candidate PDCCHs corresponding to the first aggregation level indicated by the first parameter, indicating that the number of candidate PDCCHs corresponding to the aggregation level L (the aggregation level L may be the first aggregation level) indicated by the first parameter is M. Since the first parameter indicates the number of candidate PDCCHs with the aggregation level L in the search space s. When the number of candidate PDCCHs corresponding to the aggregation level L indicated by the first parameter is M, each candidate PDCCH includes L CCEs (see the definition of the aggregation level L), and each CCE corresponds to one CCE resource position, the CCE resource position of the L CCEs included in each candidate PDCCH can be used as a candidate resource position, thereby determining M candidate resource positions based on the first parameter.

[0099] In some embodiments, N is the same as the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal, indicating that the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal is N. When the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal is N, each candidate PDCCH includes L CCEs (see the definition of the aggregation level L), and each CCE corresponds to one CCE resource position. The CCE resource position of the L CCEs included in each candidate PDCCH can be used as a candidate resource position. Thus, based on the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal, N candidate resource positions can be correspondingly determined.

[0100] Step S2104: The network device transmits DCI in the target DCI format based on the transmission resource location.

[0101] In some embodiments, the network device may determine a transmission resource location of the target DCI format from the first N candidate resource locations of the M candidate resource locations of the candidate PDCCH indicated by the first parameter, and transmit DCI of the target DCI format based on the CCE resources of the transmission resource location. For example, after determining the transmission resource location, the network device may transmit DCI of the target DCI format to the terminal based on the CCE resources at the transmission resource location.

[0102] Step S2105 : The terminal detects DCI based on the target DCI format at the first N candidate resource locations among the M candidate resource locations.

[0103] In some embodiments, the terminal may determine the first parameter, or the network device may indicate the first parameter to the terminal. The manner in which the terminal determines the first parameter may be the same as the manner in which the network device determines the first parameter, and will not be repeated here.

[0104] In some embodiments, the terminal may detect DCI based on the target DCI format at the first N candidate resource locations among M candidate resource locations, where, if it is determined that M is greater than N, M is the same as the number of candidate PDCCHs corresponding to the first aggregation level indicated by the first parameter, and N is the same as the number of candidate PDCCHs corresponding to the first aggregation level configured for the terminal in the target DCI format. This enables accurate detection of DCI in the target DCI format and effectively improves DCI detection efficiency.

[0105] The control channel element (CCE) determination method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2105. For example, step S2101 may be implemented as an independent embodiment, step S2102 may be implemented as an independent embodiment, and so on, but are not limited thereto. Steps S2101+S2102 may be implemented as independent embodiments, and steps S2101+S2102+S2103 may be implemented as independent embodiments, but are not limited thereto.

[0106] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0107] Therefore, this embodiment can support network devices to effectively determine the CCEs occupied by candidate PDCCHs based on the configuration parameters of the search space. It can also effectively improve the flexibility and configuration effect of the configuration parameters. This allows the terminal to clearly determine the DCI format to be monitored, the aggregation level to be monitored under the DCI format, and the number of candidate PDCCHs corresponding to the aggregation level. The first parameter can be determined based on one or more configuration parameters to accurately and flexibly determine the CCEs occupied by candidate physical downlink control channels (PDCCHs) corresponding to the first aggregation level in the search space. After determining the first parameter corresponding to the first aggregation level, the network device can clearly determine the CCEs occupied by candidate physical downlink control channels (PDCCHs) corresponding to the first aggregation level in the search space, and then determine the resource location of the CCE in the control resource set (CORESET) associated with the search space as the candidate resource location. This achieves accurate determination of the transmission resource location of the target DCI format. After determining the transmission resource location, the network device can transmit DCI of the target DCI format to the terminal based on the CCE resources at the transmission resource location. The terminal can detect DCI based on the target DCI format at the first N candidate resource positions among the M candidate resource positions, thereby accurately detecting DCI in the target DCI format and effectively improving DCI detection efficiency.

[0108] FIG2B is an interactive diagram illustrating a method for determining a control channel element (CCE) according to another embodiment of the present disclosure. As shown in FIG2B , the present disclosure embodiment relates to a method for determining a control channel element (CCE), which can be used in a communication system 100. The method includes:

[0109] In step S2201 , the network device determines a transmission resource location of a target DCI format from the first N candidate resource locations among M candidate resource locations.

[0110] Wherein, M is the same as the number of candidate PDCCHs corresponding to the first aggregation level indicated by the first parameter, and N is the same as the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal, thereby accurately determining the transmission resource location of the target DCI format.

[0111] The first parameter is determined based on one or more configuration parameters of the search space.

[0112] Step S2202: The network device transmits DCI in a target DCI format based on a transmission resource location.

[0113] Step S2203: The terminal determines a first parameter according to one or more configuration parameters of the search space.

[0114] Step S2204: The terminal determines, according to the first parameter, CCEs occupied by candidate physical downlink control channels PDCCH corresponding to the first aggregation level in the search space.

[0115] In some embodiments, the first parameter is used to determine CCEs occupied by candidate physical downlink control channels PDCCH corresponding to the first aggregation level AL in the search space.

[0116] In some embodiments, the configuration parameter is associated with at least one downlink control information DCI format, and different configuration parameters are associated with different DCI formats.

[0117] In some embodiments, the configuration parameters are used to configure the terminal with the aggregation level to be monitored based on the DCI format and the number of candidate PDCCHs corresponding to the aggregation level.

[0118] In some embodiments, determining the first parameter based on a configuration parameter of the search space includes:

[0119] In a case where the number of configuration parameters including the first aggregation level is one, the first parameter is determined based on the configuration parameters including the first aggregation level.

[0120] In some embodiments, determining the first parameter based on multiple configuration parameters of the search space includes:

[0121] In the case that there are multiple configuration parameters including the first aggregation level, the first parameter is determined according to the target configuration parameter among the multiple configuration parameters including the first aggregation level.

[0122] In some embodiments, the target configuration parameter is a configuration parameter having the largest number of candidate PDCCHs corresponding to the first aggregation level among a plurality of configuration parameters including the first aggregation level.

[0123] In some embodiments, the search space is a public search space.

[0124] In some embodiments, the search space is a type 3 public search space.

[0125] In some embodiments, the first parameter is

[0126] Among them, represents the time slot number in the wireless frame, μ represents the subcarrier spacing parameter, f represents the wireless frame, The s in it represents the time slot, L represents the aggregation level, is the randomization parameter, N CCE,p Indicates the number of CCEs contained in the control resource set CORESET p, p represents the index of CORESET, nCI is the carrier number, i is equal to 0, 1, ..., L-1, Indicates the number of candidate PDCCHs with aggregation level L in search space s. CORESET p is associated with search space s. is the carrier n CI The number of candidate PDCCHs with aggregation level L in the search space s, mod represents the remainder function, Indicates rounding down.

[0127] In some embodiments, the configuration parameters include any of the following:

[0128] A first configuration parameter, wherein the first configuration parameter is used to configure an aggregation level and a number of candidate PDCCHs corresponding to the aggregation level;

[0129] A second configuration parameter, wherein the second configuration parameter is used to configure the aggregation level under DCI format 2-0 and the number of candidate PDCCHs corresponding to the aggregation level;

[0130] A third configuration parameter, wherein the third configuration parameter is used to configure the aggregation level under DCI formats 2-4 and the number of candidate PDCCHs corresponding to the aggregation level;

[0131] A fourth configuration parameter, wherein the fourth configuration parameter is used to configure the aggregation level under DCI formats 2-5 and the number of candidate PDCCHs corresponding to the aggregation level;

[0132] A fifth configuration parameter, wherein the fifth configuration parameter is used to configure the aggregation level under DCI formats 2-7 and the number of candidate PDCCHs corresponding to the aggregation level.

[0133] The implementation process of the terminal executing the step of determining the first parameter according to one or more configuration parameters of the search space, and determining the CCE occupied by the candidate physical downlink control channel PDCCH corresponding to the first aggregation level in the search space according to the first parameter can be specifically referred to the implementation process of the network device, which will not be repeated here.

[0134] Step S2205 : The terminal detects DCI based on the target DCI format at the first N candidate resource locations among the M candidate resource locations.

[0135] In some embodiments, the candidate resource location refers to the location of the CCE resource occupied by the candidate PDCCH.

[0136] In some embodiments, M is the same as the number of candidate PDCCHs corresponding to the first aggregation level indicated by the first parameter, indicating that the number of candidate PDCCHs corresponding to the aggregation level L indicated by the first parameter is M. Since the first parameter indicates the number of candidate PDCCHs with the aggregation level L in the search space s. When the number of candidate PDCCHs corresponding to the aggregation level L indicated by the first parameter is M, each candidate PDCCH includes L CCEs (see the definition of the aggregation level L), and each CCE corresponds to one CCE resource position, then the CCE resource position of the L CCEs included in each candidate PDCCH can be used as a candidate resource position, thereby determining M candidate resource positions based on the first parameter.

[0137] In some embodiments, N is the same as the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal, indicating that the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal is N. When the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal is N, each candidate PDCCH includes L CCEs (see the definition of the aggregation level L), and each CCE corresponds to one CCE resource position. The CCE resource position of the L CCEs included in each candidate PDCCH can be used as a candidate resource position. Thus, based on the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal, N candidate resource positions can be correspondingly determined.

[0138] The control channel element (CCE) determination method involved in the embodiments of the present disclosure may include at least one of steps S2201 to S2205. For example, step S2201 may be implemented as an independent embodiment, step S2202 may be implemented as an independent embodiment, and so on, but the present invention is not limited thereto. Steps S2201+S2202 may be implemented as independent embodiments, and steps S2201+S2202+S2203 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0139] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0140] Therefore, this embodiment can support the terminal to effectively determine the CCEs occupied by candidate PDCCHs based on the configuration parameters of the search space. It can also effectively improve the flexibility and configuration effect of the configuration parameters. This allows the terminal to clearly determine the DCI format to be monitored, the aggregation level to be monitored under the DCI format, and the number of candidate PDCCHs corresponding to the aggregation level. The first parameter can be determined based on one or more configuration parameters to accurately and flexibly determine the CCEs occupied by candidate physical downlink control channels (PDCCHs) corresponding to the first aggregation level in the search space. After determining the first parameter corresponding to the first aggregation level, the network device can clearly determine the CCEs occupied by candidate physical downlink control channels (PDCCHs) corresponding to the first aggregation level in the search space, and then determine the resource location of the CCE in the control resource set (CORESET) associated with the search space as the candidate resource location. This achieves accurate determination of the transmission resource location of the target DCI format. After determining the transmission resource location, the network device can transmit DCI of the target DCI format to the terminal based on the CCE resources at the transmission resource location. The terminal can detect DCI based on the target DCI format at the first N candidate resource positions among the M candidate resource positions, thereby accurately detecting DCI in the target DCI format and effectively improving DCI detection efficiency.

[0141] FIG3A is an interactive diagram illustrating a method for determining a control channel element (CCE) according to another embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a method for determining a control channel element (CCE), which can be used in a network device. The method includes:

[0142] Step S3101: Determine a first parameter according to one or more configuration parameters of the search space, wherein the first parameter is used to determine CCEs occupied by candidate physical downlink control channels PDCCH corresponding to a first aggregation level in the search space.

[0143] The control channel element CCE determination method involved in the embodiment of the present disclosure may include step S3101. For example, step S3101 may be implemented as an independent embodiment, but is not limited thereto.

[0144] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0145] FIG3B is an interactive diagram illustrating a method for determining a control channel element (CCE) according to another embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a method for determining a control channel element (CCE), which can be used in a network device. The method includes:

[0146] Step S3201: Determine a first parameter according to one or more configuration parameters of the search space, wherein the first parameter is used to determine CCEs occupied by candidate physical downlink control channels PDCCH corresponding to a first aggregation level in the search space.

[0147] Step S3202, when M is greater than N, determine the transmission resource position of the target DCI format from the first N candidate resource positions among the M candidate resource positions; wherein the transmission resource position is used to transmit the DCI of the target DCI format, M is the same as the number of candidate PDCCHs corresponding to the first aggregation level indicated by the first parameter, and N is the same as the number of candidate PDCCHs corresponding to the first aggregation level configured for the terminal and the target DCI format.

[0148] The control channel element (CCE) determination method involved in the embodiments of the present disclosure may include at least one of steps S3201 and S3202. For example, step S3201 may be implemented as an independent embodiment, step S3202 may be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S3201 and S3202 may be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0149] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0150] FIG4A is an interactive diagram illustrating a method for determining a control channel element (CCE) according to another embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to a method for determining a control channel element (CCE), which can be used in a terminal. The method includes:

[0151] Step S4101: Determine a first parameter according to one or more configuration parameters of a search space, wherein the first parameter is used to determine CCEs occupied by candidate physical downlink control channels PDCCH corresponding to a first aggregation level in the search space.

[0152] The control channel element CCE determination method involved in the embodiment of the present disclosure may include step S4101. For example, step S4101 may be implemented as an independent embodiment, but is not limited thereto.

[0153] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0154] FIG4B is an interactive diagram illustrating a method for determining a control channel element (CCE) according to another embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to a method for determining a control channel element (CCE), which can be used in a terminal. The method includes:

[0155] Step S4201: Determine a first parameter according to one or more configuration parameters of the search space, wherein the first parameter is used to determine CCEs occupied by candidate physical downlink control channels PDCCH corresponding to a first aggregation level in the search space.

[0156] Step S4202, when M is greater than N, the first N candidate resource positions among the M candidate resource positions are detected DCI based on the target DCI format; wherein M is the same as the number of candidate PDCCHs corresponding to the first aggregation level indicated by the first parameter, and N is the same as the number of candidate PDCCHs corresponding to the first aggregation level configured for the terminal and the target DCI format.

[0157] The control channel element (CCE) determination method involved in the embodiments of the present disclosure may include at least one of steps S4201 and S4202. For example, step S4201 may be implemented as an independent embodiment, step S4202 may be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S4201 and S4202 may be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0158] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0159] FIG5 is an interactive diagram illustrating a method for determining a control channel element (CCE) according to another embodiment of the present disclosure. As shown in FIG5 , the embodiment of the present disclosure relates to a method for determining a control channel element (CCE), which can be used in a communication system. The method includes:

[0160] In step S5101, a network device or a terminal determines a first parameter according to one or more configuration parameters of a search space, wherein the first parameter is used to determine CCEs occupied by candidate physical downlink control channels (PDCCHs) corresponding to a first aggregation level in the search space.

[0161] The control channel element CCE determination method involved in the embodiment of the present disclosure may include step S5101. For example, step S5101 may be implemented as an independent embodiment, but is not limited thereto.

[0162] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0163] The following is an exemplary introduction to the above method.

[0164] Optional embodiment:

[0165] In the embodiments of the present disclosure, a common search space (CSS) is used as an example. When the CSS contains multiple DCI formats and the ALs corresponding to each DCI format are different, or the number of PDCCH candidates corresponding to the same AL is different, a method is proposed to determine the CCEs occupied by candidate physical downlink control channels (PDCCHs) corresponding to a certain aggregation level in the search space.

[0166] Network device side:

[0167] (1) A method for determining a CCE for a candidate PDCCH position corresponding to a first aggregation level in a search space is provided, the method being used in a network device, and comprising: determining a first parameter, the first parameter being determined based on at least one parameter (an optional example of a configuration parameter) in a first configuration parameter set for the search space. The first parameter is used to determine a CCE for a candidate PDCCH position corresponding to the first aggregation level in the search space.

[0168] (2) Each parameter in the first configuration parameter set is related to at least one DCI format. Different parameters correspond to different DCI formats.

[0169] (3) Each parameter in the first configuration parameter set is used to configure at least the number of PDCCH candidates to be monitored when performing corresponding DCI format monitoring on the terminal side for one DCI format.

[0170] (4) In response to the first configuration parameter set for the search space including only one parameter, the CCE position of the search space is determined according to the included parameter.

[0171] (5) In response to the search space first configuration parameter set including more than one parameter, the first parameter is determined according to the larger value of the multiple parameters.

[0172] (6) The search space type is CSS, which can be further limited to type 3 CSS.

[0173] (7) The first parameter is the following formula

[0174] (8) The parameters that may be included in the first configuration parameter set include at least one of the following parameters:

[0175] -nrofCandidates;

[0176] -nrofCandidates-SFI;

[0177] -dci-Format2-4, which can be indicated by nrofCandidates-CI;

[0178] -dci-Format2-5, which can be indicated by nrofCandidates-IAB;

[0179] -dci-Format2-7, which can be indicated by nrofCandidates-PEI.

[0180] (9) In response to the number M of candidate PDCCHs corresponding to the first aggregation level determined by the network being greater than the number N of PDCCH candidates corresponding to the first aggregation level of the DCI format configured for the terminal to monitor, the network device determines a transmission position of the target DCI format in the first N candidate positions among the M candidate positions.

[0181] Terminal side:

[0182] The process of determining the first parameter of the search space is consistent with that on the network device side and will not be repeated here.

[0183] (9) According to (1) to (8), in response to the determined number M of candidate PDCCHs corresponding to the first aggregation level being greater than the number N of PDCCH candidates corresponding to the first aggregation level configured for the DCI format to be monitored by the terminal, the terminal detects the target DCI format in the first N candidate positions among the M candidate positions.

[0184] Example:

[0185] DCI format 2-0 is transmitted in Type 3 CSS. DCI 0_0 and / or DCI1_0 can also be transmitted in Type 3 CSS.

[0186] Among them, for DCI format 2-0 on the terminal side, the number of PDCCH candidates that the terminal needs to monitor can be determined according to nrofCandidates-SFI, and DCI 0_0 and / or DCI 1_0 is determined by nrofCandidates.

[0187] (Example 1) Case 1: The search space contains only DCI2-0. In this case, the first configuration parameter set of the search space may include {nrofCandidates-SFI}. In this case, the first parameter Determined by the number of PDCCH candidates supported by nrofCandidates-SFI. Alternatively, the first configuration parameter set for the search space may include {nrofCandidates, nrofCandidates-SFI}, but the number of PDCCH candidates indicated in nrofCandidates is 0, and at least one of the PDCCH candidates indicated by nrofCandidates-SFI is greater than 1. In this case, the first parameter is still determined based on the value indicated by nrofCandidates-SFI.

[0188] (Example 2) Case 2: The search space contains DCI 2-0 and other DCI formats, but the two DCI formats correspond to different CCE Aggregation levels. For example, the CCE AL configured for DCI 2-0 is 8, but the CCE AL configured for other DCI formats are 2 and 4. Then, for CCE AL 8, the first parameter Determined by the value indicated by nrofCandidates-SFI. For CCE AL2, 4, the first parameter is determined according to the value indicated by nrofCandidates

[0189] (Example 3) Case 3: The search space contains DCI 2-0 and other DCI formats, and both formats contain the same CCE aggregation level. For example, the CCE AL configured for DCI 2-0 is 8, and the CCE AL configured for other DCIs also contains AL=8. In this case, the first parameter is determined based on the maximum PDCCH candidate configured by the two. For example, when the number of PDCCH candidates configured by other DCI formats is larger, the first parameter is determined according to the nrofCandidates parameter. When the terminal is detecting DCI2-0, it only detects the first one or the first two PDCCH candidates according to the indication in nrofCandidates-SFI.

[0190] The above three examples can be extended to other DCI formats.

[0191] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., a RAN) in any of the above methods.

[0192] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0193] In the embodiment of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and execution capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit, and the logical relationship of the above hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by a processor as an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0194] FIG6A is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure. As shown in FIG6A , the network device 6100 may include at least one of a transceiver module 6101 and a processing module 6102. The network device 6100 may include:

[0195] The processing module 6101 is configured to determine a first parameter according to one or more configuration parameters of the search space, wherein the first parameter is used to determine CCEs occupied by candidate physical downlink control channels PDCCH corresponding to a first aggregation level in the search space.

[0196] In some embodiments of the present disclosure, a configuration parameter is associated with at least one downlink control information DCI format, and different configuration parameters are associated with different DCI formats.

[0197] In some embodiments of the present disclosure, the configuration parameters are used to configure the aggregation level to be monitored based on the DCI format and the number of candidate PDCCHs corresponding to the aggregation level for the terminal.

[0198] In some embodiments of the present disclosure, the processing module 6101 is further configured to:

[0199] In a case where the number of configuration parameters including the first aggregation level is one, the first parameter is determined based on the configuration parameters including the first aggregation level.

[0200] In some embodiments of the present disclosure, the processing module 6101 is further configured to:

[0201] In the case that there are multiple configuration parameters including the first aggregation level, the first parameter is determined according to the target configuration parameter among the multiple configuration parameters including the first aggregation level.

[0202] In some embodiments of the present disclosure, the target configuration parameter is a configuration parameter having the largest number of candidate PDCCHs corresponding to the first aggregation level among multiple configuration parameters including the first aggregation level.

[0203] In some embodiments of the present disclosure, the search space is a public search space.

[0204] In some embodiments of the present disclosure, the search space is a type 3 public search space.

[0205] In some embodiments of the present disclosure, the first parameter is

[0206] in, represents the time slot number in the wireless frame, μ represents the subcarrier spacing parameter, f represents the wireless frame, The s in it represents the time slot, L represents the aggregation level, is the randomization parameter, N CCE,p Indicates the number of CCEs contained in the control resource set CORESET p, p represents the index of CORESET, n CI is the carrier number, i is equal to 0, 1, ..., L-1, Indicates the number of candidate PDCCHs with aggregation level L in search space s. CORESET p is associated with search space s. is the carrier n CI The number of candidate PDCCHs with aggregation level L in the search space s, mod represents the remainder function, Indicates rounding down.

[0207] In some embodiments of the present disclosure, the configuration parameters include any of the following:

[0208] A first configuration parameter, wherein the first configuration parameter is used to configure an aggregation level and a number of candidate PDCCHs corresponding to the aggregation level;

[0209] A second configuration parameter, wherein the second configuration parameter is used to configure the aggregation level under DCI format 2-0 and the number of candidate PDCCHs corresponding to the aggregation level;

[0210] A third configuration parameter, wherein the third configuration parameter is used to configure the aggregation level under DCI formats 2-4 and the number of candidate PDCCHs corresponding to the aggregation level;

[0211] A fourth configuration parameter, wherein the fourth configuration parameter is used to configure the aggregation level under DCI formats 2-5 and the number of candidate PDCCHs corresponding to the aggregation level;

[0212] A fifth configuration parameter, wherein the fifth configuration parameter is used to configure the aggregation level under DCI formats 2-7 and the number of candidate PDCCHs corresponding to the aggregation level.

[0213] In some embodiments of the present disclosure, the processing module 6101 is further configured to:

[0214] When M is greater than N, the transmission resource position of the target DCI format is determined from the first N candidate resource positions among the M candidate resource positions; wherein the transmission resource position is used to transmit the DCI of the target DCI format, M is the same as the number of candidate PDCCHs corresponding to the first aggregation level indicated by the first parameter, and N is the same as the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal.

[0215] FIG6B is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in FIG6B , the terminal 6200 may include at least one of a transceiver module 6201 and a processing module 6202. The terminal 6200 may include:

[0216] The processing module 6201 is configured to determine a first parameter according to one or more configuration parameters of the search space, wherein the first parameter is used to determine CCEs occupied by candidate physical downlink control channels PDCCH corresponding to a first aggregation level in the search space.

[0217] In some embodiments of the present disclosure, a configuration parameter is associated with at least one downlink control information DCI format, and different configuration parameters are associated with different DCI formats.

[0218] In some embodiments of the present disclosure, the configuration parameters are used to configure the aggregation level to be monitored based on the DCI format and the number of candidate PDCCHs corresponding to the aggregation level for the terminal.

[0219] In some embodiments of the present disclosure, the processing module 6201 is further configured to:

[0220] In a case where the number of configuration parameters including the first aggregation level is one, the first parameter is determined based on the configuration parameters including the first aggregation level.

[0221] In some embodiments of the present disclosure, the processing module 6201 is further configured to:

[0222] In the case that there are multiple configuration parameters including the first aggregation level, the first parameter is determined according to the target configuration parameter among the multiple configuration parameters including the first aggregation level.

[0223] In some embodiments of the present disclosure, the target configuration parameter is a configuration parameter having the largest number of candidate PDCCHs corresponding to the first aggregation level among multiple configuration parameters including the first aggregation level.

[0224] In some embodiments of the present disclosure, the search space is a public search space.

[0225] In some embodiments of the present disclosure, the search space is a type 3 public search space.

[0226] In some embodiments of the present disclosure, the first parameter is

[0227] in, represents the time slot number in the wireless frame, μ represents the subcarrier spacing parameter, f represents the wireless frame, The s in it represents the time slot, L represents the aggregation level, is the randomization parameter, N CCE,p Indicates the number of CCEs contained in the control resource set CORESET p, p represents the index of CORESET, n CI is the carrier number, i is equal to 0, 1, ..., L-1, Indicates the number of candidate PDCCHs with aggregation level L in search space s. CORESET p is associated with search space s. is the carrier n CI The number of candidate PDCCHs with aggregation level L in the search space s, mod represents the remainder function, Indicates rounding down.

[0228] In some embodiments of the present disclosure, the configuration parameters include any of the following:

[0229] A first configuration parameter, wherein the first configuration parameter is used to configure an aggregation level and a number of candidate PDCCHs corresponding to the aggregation level;

[0230] A second configuration parameter, wherein the second configuration parameter is used to configure the aggregation level under DCI format 2-0 and the number of candidate PDCCHs corresponding to the aggregation level;

[0231] A third configuration parameter, wherein the third configuration parameter is used to configure the aggregation level under DCI formats 2-4 and the number of candidate PDCCHs corresponding to the aggregation level;

[0232] A fourth configuration parameter, wherein the fourth configuration parameter is used to configure the aggregation level under DCI formats 2-5 and the number of candidate PDCCHs corresponding to the aggregation level;

[0233] A fifth configuration parameter, wherein the fifth configuration parameter is used to configure the aggregation level under DCI formats 2-7 and the number of candidate PDCCHs corresponding to the aggregation level.

[0234] In some embodiments of the present disclosure, the processing module 6201 is further configured to:

[0235] When M is greater than N, detecting DCI based on the target DCI format at the first N candidate resource positions among the M candidate resource positions;

[0236] Here, M is the same as the number of candidate PDCCHs corresponding to the first aggregation level indicated by the first parameter, and N is the same as the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal.

[0237] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0238] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0239] Figure 7A is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure. Communication device 7100 can be a terminal, a network device, a chip, a chip system, or a processor that supports a terminal implementing any of the above methods, or a chip, a chip system, or a processor that supports a network device implementing any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0240] As shown in FIG7A , the communication device 7100 includes one or more processors 7101. The processor 7101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control a communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The communication device 7100 is used to perform any of the above methods.

[0241] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memories 7102 may be located outside the communication device 7100.

[0242] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the transceiver 7103 performs at least one of the communication steps of sending and / or receiving in the above method, and the processor 7101 performs the other steps.

[0243] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0244] In some embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuit 7104 is connected to the memory 7102. The interface circuit 7104 may be configured to receive signals from the memory 7102 or other devices, and may be configured to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0245] The communication device 7100 described in the above embodiments may be a terminal, a network device, or a third entity, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7A . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0246] FIG7B is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0247] The chip 7200 includes one or more processors 7201 , and the chip 7200 is configured to execute any of the above methods.

[0248] In some embodiments, the chip 7200 further includes one or more interface circuits 7202. Optionally, the interface circuit 7202 is connected to the memory 7203. The interface circuit 7202 can be used to receive signals from the memory 7203 or other devices, and can be used to send signals to the memory 7203 or other devices. For example, the interface circuit 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201.

[0249] In some embodiments, the interface circuit 7202 performs at least one of the communication steps, such as sending and / or receiving, in the above method, while the processor 7201 performs the other steps. In some embodiments, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable. In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Optionally, all or part of the memories 7203 may be located outside the chip 7200.

[0250] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0251] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0252] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0253] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0254] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0255] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0256] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A method for determining a control channel element CCE, characterized in that, executed by a network device, the method includes: Determine a first parameter according to one or more configuration parameters of a search space, where the first parameter is used to determine the CCE occupied by a candidate physical downlink control channel PDCCH corresponding to a first aggregation level in the search space.

2. The method according to claim 1, characterized in that, The configuration parameter is associated with at least one downlink control information DCI format, and the DCI formats associated with different configuration parameters are different.

3. The method according to any one of claims 1-2, characterized in that, The configuration parameter is used to configure the aggregation level required to be monitored based on the DCI format for the terminal and the number of candidate PDCCHs corresponding to the aggregation level.

4. The method according to any one of claims 1-3, characterized in that, Determine a first parameter according to a configuration parameter of a search space, including: When the number of configuration parameters including the first aggregation level is one, determine the first parameter according to the configuration parameter including the first aggregation level.

5. The method according to any one of claims 1-3, characterized in that, Determine a first parameter according to multiple configuration parameters of a search space, including: When the number of configuration parameters including the first aggregation level is multiple, determine the first parameter according to the target configuration parameter among the multiple configuration parameters including the first aggregation level.

6. The method according to claim 5, characterized in that, The target configuration parameter is the configuration parameter with the largest value of the number of candidate PDCCHs corresponding to the first aggregation level among the multiple configuration parameters including the first aggregation level.

7. The method according to any one of claims 1-6, characterized in that, The search space is a common search space.

8. The method according to any one of claims 1-7, characterized in that, The search space is a type 3 common search space.

9. The method according to any one of claims 1-8, characterized in that, The first parameter is in the following arithmetic formula Among them, Indicates the time slot number within a radio frame, μ represents the subcarrier spacing parameter, and f represents the radio frame. where s represents the time slot and L represents the aggregation degree, is a randomization parameter, N CCE,p represents the number of CCEs included in the control resource set CORESET p, where p represents the index of CORESET, n CI is the carrier number, i equals 0, 1,..., L - 1, Indicates the number of candidate PDCCHs with an aggregation level of L in the search space s, where CORESET p is associated with the search space s, For carrier n CI is the number of candidate PDCCHs with aggregation level L in search space s, where mod represents the modulo function Denotes rounding down.

10. The method according to any one of claims 1-9, characterized in that, The configuration parameter includes any one of the following: A first configuration parameter, where the first configuration parameter is used to configure the aggregation level and the number of candidate PDCCHs corresponding to the aggregation level; A second configuration parameter, where the second configuration parameter is used to configure the aggregation level and the number of candidate PDCCHs corresponding to the aggregation level under DCI format 2-0; A third configuration parameter, where the third configuration parameter is used to configure the aggregation level and the number of candidate PDCCHs corresponding to the aggregation level under DCI format 2-4; A fourth configuration parameter, where the fourth configuration parameter is used to configure the aggregation level and the number of candidate PDCCHs corresponding to the aggregation level under DCI format 2-5; A fifth configuration parameter, where the fifth configuration parameter is used to configure the aggregation level and the number of candidate PDCCHs corresponding to the aggregation level under DCI format 2-7.

11. The method according to any one of claims 1-10, It is characterized in that the method further includes: when M is greater than N, determining a transmission resource location of a target DCI format from the first N candidate resource locations among the M candidate resource locations; wherein, the transmission resource location is used to transmit DCI of the target DCI format, M is the same as the number of candidate PDCCHs corresponding to the first aggregation level indicated by the first parameter, and N is the same as the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal.

12. A method for determining a control channel element CCE, It is characterized in that being executed by a terminal, the method includes: determining a first parameter according to one or more configuration parameters of a search space, wherein the first parameter is used to determine the CCEs occupied by candidate physical downlink control channels PDCCHs corresponding to a first aggregation level AL in the search space.

13. The method according to claim 12, It is characterized in that the configuration parameter is associated with at least one downlink control information DCI format, and the DCI formats associated with different configuration parameters are different.

14. The method according to any one of claims 12-13, It is characterized in that the configuration parameter is used to configure, for the terminal, the aggregation level required to be monitored based on the DCI format and the number of candidate PDCCHs corresponding to the aggregation level.

15. The method according to any one of claims 12-14, It is characterized in that determining a first parameter according to a configuration parameter of a search space includes: when the number of configuration parameters including the first aggregation level is one, determining the first parameter according to the configuration parameter including the first aggregation level.

16. The method according to any one of claims 12-14, It is characterized in that determining a first parameter according to multiple configuration parameters of a search space includes: when the number of configuration parameters including the first aggregation level is multiple, determining the first parameter according to a target configuration parameter among the multiple configuration parameters including the first aggregation level.

17. The method according to claim 16, It is characterized in that the target configuration parameter is the configuration parameter with the largest value of the number of candidate PDCCHs corresponding to the first aggregation level among the multiple configuration parameters including the first aggregation level.

18. The method according to any one of claims 12-17, It is characterized in that the search space is a common search space.

19. The method according to any one of claims 12-18, It is characterized in that the search space is a type 3 common search space.

20. The method according to any one of claims 12-19, It is characterized in that The first parameter is in the following arithmetic formula Among them, Indicates the time slot number within a radio frame, μ represents the subcarrier spacing parameter, and f represents the radio frame. where s represents a time slot and L represents the degree of aggregation, is a randomization parameter, N CCE,p represents the number of CCEs included in the control resource set CORESET p, where p represents the index of CORESET, n CI is the carrier number, and i is equal to 0, 1,..., L - 1 Indicates the number of candidate PDCCHs with an aggregation level of L in the search space s, where CORESET p is associated with the search space s. For carrier n CI The number of candidate PDCCHs with aggregation level L in search space s, where mod represents the remainder function represents rounding down.

21. The method according to any one of claims 12-20, It is characterized in that the configuration parameter includes any one of the following: a first configuration parameter, wherein the first configuration parameter is used to configure the aggregation level and the number of candidate PDCCHs corresponding to the aggregation level; a second configuration parameter, wherein the second configuration parameter is used to configure the aggregation level and the number of candidate PDCCHs corresponding to the aggregation level under DCI format 2-0; A third configuration parameter, where the third configuration parameter is used to configure the aggregation level in DCI format 2-4 and the number of candidate PDCCHs corresponding to the aggregation level; A fourth configuration parameter, where the fourth configuration parameter is used to configure the aggregation level in DCI format 2-5 and the number of candidate PDCCHs corresponding to the aggregation level; A fifth configuration parameter, where the fifth configuration parameter is used to configure the aggregation level in DCI format 2-7 and the number of candidate PDCCHs corresponding to the aggregation level.

22. The method according to any one of claims 12-21, characterized in that, the method further includes: When M is greater than N, detecting DCI at the first N candidate resource positions among the M candidate resource positions based on the target DCI format; wherein, the M is the same as the number of candidate PDCCHs corresponding to the first aggregation level indicated by the first parameter, and the N is the same as the number of candidate PDCCHs corresponding to the first aggregation level of the target DCI format configured for the terminal.

23. A network device, characterized in that, the network device includes: A processing module, configured to determine a first parameter according to one or more configuration parameters of a search space, where the first parameter is used to determine the CCEs occupied by candidate physical downlink control channels PDCCHs corresponding to a first aggregation level in the search space.

24. A terminal, characterized in that, the terminal includes: A processing module, configured to determine a first parameter according to one or more configuration parameters of a search space, where the first parameter is used to determine the CCEs occupied by candidate physical downlink control channels PDCCHs corresponding to a first aggregation level in the search space.

25. A communication device, characterized in that, includes: One or more processors; wherein, the processor is configured to execute the control channel element CCE determination method according to any one of claims 1-22.

26. A storage medium, the storage medium stores instructions, characterized in that, when the instructions run on the communication device, the communication device is caused to execute the control channel element CCE determination method according to any one of claims 1-22. ​

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