Pdcch monitoring method, device, system, storage medium and program product

Abstract

The present disclosure provides a PDCCH monitoring method, device, system, storage medium and program product. The method comprises: receiving dynamic information sent by a network device, the dynamic information being used for dynamically indicating a monitoring parameter; and monitoring a PDCCH using the monitoring parameter. In the above embodiment, the network device can dynamically adjust the monitoring parameter used by the terminal through the dynamic information, so that the terminal can monitor the PDCCH based on the dynamically adjusted monitoring parameter, improve the flexibility of the terminal in monitoring the PDCCH, and thus ensure the reliability of communication between the terminal and the network device.

Description

PDCCH monitoring methods, equipment, systems, storage media, and software products Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to methods, devices, systems, storage media, and program products for monitoring the Physical Downlink Control Channel (PDCCH). Background Technology

[0002] With the rapid development of mobile communication technology, monitoring parameters are pre-defined in the terminal by the communication protocol. The terminal then monitors the PDCCH based on the monitoring parameters defined by the communication protocol, and then receives downlink control information (DCI) based on the monitored PDCCH. Summary of the Invention

[0003] When a terminal monitors the PDCCH based on the monitoring parameters specified in the communication protocol, there are situations where the monitoring parameters are too restrictive. How to improve the flexibility of the terminal in using the monitoring parameters is an urgent problem to be solved.

[0004] This disclosure provides a PDCCH monitoring, device, system, storage medium, and program product.

[0005] According to a first aspect of the embodiments of this disclosure, a PDCCH monitoring method is proposed, the method being executed by a terminal, the method comprising:

[0006] Receive dynamic information sent by network devices, the dynamic information being used to dynamically indicate monitoring parameters;

[0007] Use the aforementioned monitoring parameters to monitor PDCCH.

[0008] According to a second aspect of the present disclosure, a PDCCH monitoring method is provided, the method being performed by a network device, the method comprising:

[0009] Send dynamic information to the terminal, the dynamic information being used to dynamically indicate monitoring parameters;

[0010] The monitoring parameters are used by the terminal to monitor the PDCCH.

[0011] According to a third aspect of the present disclosure, a communication device is provided for performing PDCCH monitoring as described in the first or second aspect.

[0012] According to a fourth aspect of the present disclosure, a communication device is provided, comprising:

[0013] The processing module is used to perform the PDCCH monitoring described in the first or second aspect.

[0014] According to a fifth aspect of the present disclosure, a terminal is provided, comprising: one or more processors; wherein the processors are configured to perform any of the methods described in the first aspect.

[0015] According to a sixth aspect of the present disclosure, a network device is provided, comprising: one or more processors; wherein the processors are configured to perform any of the methods described in the second aspect.

[0016] According to a seventh aspect of the present disclosure, a communication system is provided, comprising: a terminal and a network device, wherein the terminal is configured to implement PDCCH monitoring as described in the first aspect, and the network device is configured to perform the method as described in the second aspect.

[0017] According to an eighth aspect of the present disclosure, a storage medium is provided that stores instructions which, when executed on a communication device, cause the communication device to perform the method as described in any one of the first or second aspects.

[0018] In the above embodiments, the network device can dynamically adjust the monitoring parameters used by the terminal through dynamic information, so that the terminal can monitor the PDCCH based on the dynamically adjusted monitoring parameters, thereby improving the flexibility of the terminal in monitoring the PDCCH and ensuring the reliability of communication between the terminal and the network device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0020] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0021] Figure 2A is an interactive schematic diagram of PDCCH monitoring according to an embodiment of the present disclosure;

[0022] Figure 2B is a schematic diagram illustrating PDCCH monitoring according to an embodiment of the present disclosure;

[0023] Figure 3 is a schematic flowchart of PDCCH monitoring according to an embodiment of the present disclosure;

[0024] Figure 4 is a schematic flowchart of PDCCH monitoring according to an embodiment of the present disclosure;

[0025] Figure 5A is a schematic diagram of the structure of the terminal proposed in an embodiment of this disclosure;

[0026] Figure 5B is a schematic diagram of the structure of the network device proposed in an embodiment of this disclosure;

[0027] Figure 6A is a schematic diagram of the structure of the communication device proposed in an embodiment of this disclosure;

[0028] Figure 6B is a schematic diagram of the chip structure proposed in an embodiment of this disclosure. Detailed Implementation

[0029] This disclosure provides a PDCCH monitoring, device, system, storage medium, and program product.

[0030] In a first aspect, embodiments of this disclosure propose a PDCCH monitoring method, which is executed by a terminal and includes:

[0031] Receive dynamic information sent by network devices, the dynamic information being used to dynamically indicate monitoring parameters;

[0032] Use the aforementioned monitoring parameters to monitor PDCCH.

[0033] In the above embodiments, the network device can dynamically adjust the monitoring parameters used by the terminal through dynamic information, so that the terminal can monitor the PDCCH based on the dynamically adjusted monitoring parameters, thereby improving the flexibility of the terminal in monitoring the PDCCH and ensuring the reliability of communication between the terminal and the network device.

[0034] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0035] The network device receives configuration signaling, which is used to configure at least one group, each group including at least one monitoring parameter, and the at least one group corresponds to the search space.

[0036] In the above embodiments, the network device configures at least one group for the terminal, and subsequently, the monitoring parameters indicated by the dynamic information can be selected from at least one group, thereby improving the flexibility of the monitoring parameters indicated by the dynamic information.

[0037] In conjunction with some embodiments of the first aspect, in some embodiments, the dynamic information includes a group identifier, and the monitoring of the PDCCH using the monitoring parameters includes:

[0038] The PDCCH is monitored using monitoring parameters from one of the groups identified by the group identifier among multiple groups.

[0039] In the above embodiments, the monitoring parameters indicated by the dynamic information can be selected from multiple groups, so that the terminal can monitor the PDCCH based on a group indicated by the dynamic information, thereby improving the accuracy of the terminal's monitoring of the PDCCH.

[0040] In conjunction with some embodiments of the first aspect, in some embodiments, the group identifier of one of the multiple groups indicated by the dynamic information is not present in any of the multiple group identifiers configured in any search space; the monitoring parameter used by the terminal is any one of the following:

[0041] The monitoring parameters included in the group previously used in any search space;

[0042] The monitoring parameters included in the group with the largest group identifier among the multiple groups configured in any search space;

[0043] The monitoring parameters included in the group with the smallest group identifier among the multiple groups configured in any search space;

[0044] The monitoring parameters included in the default group used by any search space.

[0045] In the above embodiments, if the group identifier of a group indicated by the dynamic information exceeds the largest group identifier configured in the search space, the monitoring parameters of the previously used, largest, smallest, or default group identifiers in the search space can be selected to expand the way the terminal determines the monitoring parameters and improve the flexibility of the terminal in determining the monitoring parameters.

[0046] In conjunction with some embodiments of the first aspect, in some embodiments, the dynamic information includes parameter values, and the monitoring of the PDCCH using the monitoring parameters includes:

[0047] The PDCCH is monitored using a monitoring parameter indicated by the parameter value.

[0048] In the above embodiments, selecting one monitoring parameter from a group reduces the number of times the terminal monitors the PDCCH compared to all monitoring parameters in a group, thus saving terminal power consumption.

[0049] In conjunction with some embodiments of the first aspect, in some embodiments, the monitoring parameter indicated by the dynamic information is an aggregation level;

[0050] The monitoring of the PDCCH based on the monitoring parameters includes: monitoring the PDCCH using the aggregation level and the number of candidates corresponding to the aggregation level;

[0051] The aggregation level is used to indicate the amount of time-frequency resources occupied by the downlink control information (DCI) carried by the PDCCH, and the candidate number is used to indicate the number of monitoring areas. The monitoring area refers to the area in which the terminal monitors the DCI carried by the PDCCH, and the monitoring area includes the amount of time-frequency resources indicated by the aggregation level.

[0052] In the above embodiments, the terminal determines the aggregation level and number of candidates used when monitoring the PDCCH by using the aggregation level indicated by the network device, thereby improving the accuracy of the aggregation level and number of candidates used by the terminal.

[0053] In conjunction with some embodiments of the first aspect, in some embodiments, the aggregation level indicated by the dynamic information is the largest or smallest aggregation level in the group.

[0054] In the above embodiments, if the aggregation level indicated by the dynamic information received by the terminal is the largest aggregation level in a group, and the number of candidates is the number of candidates corresponding to the largest aggregation level, the indicated largest aggregation level can ensure that the PDCCH can be successfully monitored and the received DCI can be demodulated even when the channel conditions deteriorate in the future.

[0055] If the aggregation level indicated by the dynamic information received by the terminal is the smallest aggregation level in a group, and the number of candidates is the number of candidates corresponding to the smallest aggregation level, the indicated minimum aggregation level can be guaranteed to be used when the channel conditions are good, thus ensuring the reliability of receiving DCI through the monitored PDCCH.

[0056] If the aggregation level indicated by the dynamic information received by the terminal is a predefined aggregation level in a group, the network device can indicate the aggregation level even when the channel conditions are not determined, thus preventing the dynamic information from failing to indicate the aggregation level.

[0057] In addition, the aggregation level used by the terminal can be either the largest or the smallest aggregation level in a group, which improves the flexibility of the aggregation level used by the terminal.

[0058] In the above embodiments, the terminal monitors the PDCCH by using the aggregation level and number of candidates indicated by the network device, thereby improving the accuracy of the aggregation level and number of candidates used by the terminal.

[0059] In conjunction with some embodiments of the first aspect, in some embodiments, the monitoring of the PDCCH includes:

[0060] Monitor the PDCCH in the search space configured on all carriers of the terminal; or,

[0061] Monitor the PDCCH in the search space configured on the carrier where the dynamic information is located;

[0062] Monitor the PDCCH in the search space indicated by the dynamic information.

[0063] In the above embodiments, the terminal can monitor the PDCCH in the search space corresponding to different carriers or in the search space indicated by dynamic information, which expands the types of search spaces that the terminal can monitor the PDCCH and improves the flexibility of the terminal to monitor the PDCCH in different search spaces.

[0064] In conjunction with some embodiments of the first aspect, in some embodiments, the search space indicated by the dynamic information is the search space indicated by at least one search space identifier associated with the dynamic information; or,

[0065] The dynamic information includes at least one index, and each index indicates a search space.

[0066] In the above embodiments, the search space indicated by dynamic information can also have different indication methods, thus expanding the ways in which the search space is indicated by dynamic information.

[0067] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0068] Upon receiving the dynamic information, a timer is started. The timer is used to indicate the duration for which the terminal monitors the PDCCH using the monitoring parameters indicated by the dynamic information.

[0069] After the timer expires, the PDCCH is monitored using predefined monitoring parameters.

[0070] In the above embodiments, a timer is used to define the effective duration of the monitoring parameters indicated by the dynamic information. This enables the monitoring parameters indicated by the dynamic information to be effective for a certain period of time, and then to revert to the predefined monitoring parameters to continue monitoring the PDCCH after a certain period of time, thereby improving the stability of monitoring the PDCCH using the monitoring parameters.

[0071] In conjunction with some embodiments of the first aspect, in some embodiments, the dynamic information is physical layer PHY information or media access control (MAC) information.

[0072] In conjunction with some embodiments of the first aspect, in some embodiments, the terminal is in an RRC connection state.

[0073] Secondly, embodiments of this disclosure provide a PDCCH monitoring method, which is performed by a network device and includes:

[0074] Send dynamic information to the terminal, the dynamic information being used to dynamically indicate monitoring parameters;

[0075] The monitoring parameters indicated by the dynamic information are used by the terminal to monitor the PDCCH.

[0076] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0077] A configuration signaling message is sent to the terminal. The configuration signaling message is used to configure at least one group, each group including at least one monitoring parameter, and the at least one group has a corresponding relationship with the search space.

[0078] In conjunction with some embodiments of the second aspect, in some embodiments, the dynamic information includes a group identifier, which identifies monitoring parameters in a group used by the terminal to monitor the PDCCH.

[0079] In conjunction with some embodiments of the second aspect, in some embodiments, the group identifier of one of the multiple groups indicated by the dynamic information is not present in any of the multiple group identifiers configured in any search space; the monitoring parameter used by the terminal is any one of the following:

[0080] The monitoring parameters included in the group previously used in any search space;

[0081] The monitoring parameters included in the group with the largest group identifier among the multiple groups configured in any search space;

[0082] The monitoring parameters included in the group with the smallest group identifier among the multiple groups configured in any search space;

[0083] The monitoring parameters included in the default group used by any search space.

[0084] In conjunction with some embodiments of the second aspect, in some embodiments, the dynamic information includes parameter values, which indicate a monitoring parameter used by the terminal to monitor the PDCHH.

[0085] In conjunction with some embodiments of the second aspect, in some embodiments, the monitoring parameter is an aggregate level;

[0086] The aggregation level and the number of candidates corresponding to the aggregation level are used by the terminal to monitor the PDCCH;

[0087] The aggregation level is used to indicate the amount of time-frequency resources occupied by the downlink control information (DCI) carried by the PDCCH. The number of candidates corresponding to the aggregation level is used to indicate the number of monitoring areas. The monitoring area refers to the area in which the terminal monitors the DCI carried by the PDCCH. The monitoring area includes the number of time-frequency resources indicated by the aggregation level.

[0088] In conjunction with some embodiments of the second aspect, in some embodiments, the aggregation level is the largest or smallest aggregation level in the group.

[0089] In conjunction with some embodiments of the second aspect, in some embodiments, the PDCCH in the search space configured on all carriers of the terminal is monitored by the terminal; or,

[0090] The PDCCH in the search space configured on the carrier where the dynamic information is located is monitored by the terminal;

[0091] The PDCCH in the search space indicated by the dynamic information is monitored by the terminal.

[0092] In conjunction with some embodiments of the second aspect, in some embodiments, the search space indicated by the dynamic information is the search space indicated by at least one search space identifier associated with the dynamic information; or,

[0093] The dynamic information includes at least one index, and each index indicates a search space.

[0094] In conjunction with some embodiments of the second aspect, in some embodiments, the dynamic information is physical layer PHY information or media access control (MAC) information.

[0095] Thirdly, embodiments of this disclosure provide a communication device for performing PDCCH monitoring as described in the first or second aspect.

[0096] Fourthly, embodiments of this disclosure provide a communication device, which includes at least one of a transceiver module and a processing module; wherein the communication device is used to execute an optional implementation of the first aspect or the second aspect.

[0097] Fifthly, embodiments of this disclosure provide a terminal, including: one or more processors; wherein the processors are configured to perform the method described in any one of the first aspects.

[0098] In a sixth aspect, embodiments of this disclosure provide a network device, including: one or more processors; wherein the processors are configured to perform the method described in any one of the second aspects.

[0099] In a seventh aspect, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of the first or second aspects.

[0100] Eighthly, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method as described in either the first or second aspect.

[0101] In a ninth aspect, embodiments of this disclosure provide a computer program that, when run on a communication device, causes the communication device to perform the method described in either the first or second aspect.

[0102] In a tenth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described in either the first or second aspect.

[0103] It is understood that the aforementioned communication equipment, communication system, storage medium, program product, etc., are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0104] This disclosure provides a PDCCH monitoring device, system, storage medium, and program product. In some embodiments, the terms PDCCH monitoring, PDCCH listening method, PDCCH blind detection method, blind detection method, and listening method are interchangeable.

[0105] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular 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 particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments. In all embodiments of this disclosure, unless otherwise specified or logically conflicting, the terminology and / or descriptions between the embodiments are consistent and can be mutually referenced. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0106] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0107] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0108] In the embodiments disclosed herein, "multiple" refers to two or more.

[0109] In some embodiments, the terms “at least one of A or B, at least one of A and B”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0110] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of whether there is a branch B); in some embodiments, B (execute B regardless of whether there is a branch A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, both A and B are executed. The same applies when there are more branches such as A, B, C, etc.

[0111] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execute A regardless of whether a branch B exists); in some embodiments, B (execute B regardless of whether a branch A exists); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, and C.

[0112] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "symbol," the ordinal number preceding "symbol" in "first symbol" and "second symbol" does not restrict the position or order of the "symbols." "First" and "second" do not restrict whether the "symbols" they modify are in the same message, nor do they restrict the order of "first symbol" and "second symbol." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, objects modified by different prefixes can be the same or different. For example, if the descriptive object is a "device," then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the descriptive object is "information," then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0113] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0114] In some embodiments, terms such as “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “when…”, “if…”, etc. can be used interchangeably. These descriptions all refer to the device making a corresponding action under certain objective circumstances. They do not necessarily limit the time, nor do they require the device to make a judgment action when implementing it, nor do they mean that there must be other limitations.

[0115] In some embodiments, the terms “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 lower than,” and “above” can be used interchangeably, as can the terms “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,” and “below”.

[0116] In some embodiments, devices, etc., may be interpreted as physical or virtual, and their names are not limited to those described in the embodiments. Terms such as “device,” “equipment,” “circuit,” “network element,” “network function,” “network device,” “function,” “node,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” and “subject” are interchangeable.

[0117] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0118] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / 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," and "bandwidth part (BWP)" can be used interchangeably.

[0119] In some embodiments, the terms "terminal", "terminal device", "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", and "client" can be used interchangeably.

[0120] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0121] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal.

[0122] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0123] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0124] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0125] Figure 1 is a schematic diagram of the architecture of a sensory system according to an embodiment of the present disclosure.

[0126] As shown in Figure 1, the communication system 100 includes a terminal 101, an access network device 102, and a core network device 103.

[0127] In some embodiments, terminal 101 includes, for example, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home, but is not limited thereto.

[0128] In some embodiments, the access network device 102 may be a node or device that connects a terminal to a wireless network. The access network device may include at least one of the following in a 5G communication system: an evolved Node B (eNB), a next-generation eNB (ng-eNB), a next-generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (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 RAN, a cloud RAN, a base station in other communication systems, and an access node in a Wi-Fi system, but is not limited thereto.

[0129] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0130] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0131] In some embodiments, the core network device 103 may be a single device, including a first network element 1031, a second network element 1032, etc., or it may be multiple devices or a group of devices, each including all or part of the first network element 1031, the second network element 1032, etc. Network elements may be virtual or physical. The core network may include, for example, at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), and 6G Core Network (6GCN).

[0132] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0133] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1 are illustrative. The communication system may include all or some of the main bodies in FIG1, or may include other main bodies outside of FIG1. ​​The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0134] The embodiments disclosed herein 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), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a 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, systems utilizing other PDCCH monitoring, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0135] In some embodiments, the terminal may monitor the PDCCH sent by the network device, wherein the PDCCH includes DCI, which can also be understood as the terminal monitoring the PDCCH to receive the DCI carried by the PDCCH.

[0136] It should be noted that terminal monitoring of the PDCCH can be referred to as PDCCH blind detection. The energy consumption of PDCCH blind detection is an important registered component of terminal energy consumption. In 5G communication systems, for terminals entering the RRC connected state, network devices can configure one or more search spaces (SS) for the terminal. For each search space, the following parameters can be configured:

[0137] (1) Search Space ID. The Search Space ID is used to identify the search space.

[0138] (2) Types of search spaces. The search space types include common search space (CSS) and UE-specific search space (USS). Optionally, if the search space type is CSS, it can only be used to transmit common DCI (used to indicate some control information) or predefined fallback format scheduling DCI (used to schedule PDSCH or PUSCH). If the search space type is USS, it can be used to transmit predefined fallback format scheduling DCI or non-fallback format scheduling DCI (non-fallback format scheduling DCI is also used to schedule Physical Downlink Shared Channel (PDSCH) or Physical Uplink Shared Channel (PUSCH), but some information fields in the non-fallback format scheduling DCI are terminal-specific, such as Precoding Matrix Indicator (PMI), Layer, and other parameters.

[0139] (3) One or more DCI formats that need to be blindly checked in the search space.

[0140] (4) Possible aggregation levels (AL) in the search space that require blind detection. The aggregation level is used to represent the amount of time-frequency resources occupied by a DCI, such as AL=2, AL=4, AL=8, AL=16, etc.

[0141] (5) The number of candidates N corresponding to each AL in the search space. That is, for the AL corresponding to this number of candidates, the terminal needs to perform DCI blind detection of the AL on at most N different time-frequency resources.

[0142] (6) For a specific DCI format in the search space, configure the number of ALs and candidates that need to be blindly checked separately for that DCI format.

[0143] In some embodiments, the signaling for configuring the network device with the AL and its corresponding number of candidates is as follows:

[0144] Optionally, if the terminal needs to blindly detect more DCI formats in the search space, and the number of ALs and candidates for the DCIs increases, then the energy consumption of the terminal for PDCCH monitoring in that search space will be greater. Without loss of generality, assume that K DCI formats are configured in the search space, and the Kth DCI format is configured with M... k There are ALs, each AL is configured with Given 1 candidate time-frequency resource location, the maximum number of blind checks for PDCCH in a search space is (assuming each DCI requires only 1 RNTI attempt):

[0145] In 5G communication systems, for terminals that are idle / inactive during RRC (Registered Radio Control), it is necessary to monitor scheduling system information (including SIB1 and other System Information (SI)), paging, paging early indication (PEI), and scheduling instructions during the Random Access Channel (RACH) reception process. Therefore, blind PDCCH detection needs to be performed in the cell CSS (Cellular Cell CSS). The relevant cell CSS in 5G NR is described below:

[0146] 1. Type0-PDCCH CSS, used for transmission scheduling SIB1 PDCCH, is only configured on the primary cell of the Master Cell Group (MCG).

[0147] 2. Type 0A-PDCCH CSS, used for transmitting and scheduling PDCCHs of other SIs, is only configured on the primary cell of the MCG.

[0148] 3. Type 1-PDCCH CSS is used to schedule the PDCCH of Msg2 / Msg4 / MsgB during random access in the transmission scheduling process. This CSS is configured on the primary cell.

[0149] 4. Type2-PDCCH CSS, used for transmitting scheduling paging PDSCH PDCCH, is only configured on the primary cell of the MCG.

[0150] 5. Type2A-PDCCH CSS is used for advance indication of transmission scheduling paging (PEI). PEI is DCI 2-7 and is only configured on the main cell of the MCG.

[0151] In some embodiments, the number of ALs and candidates for blind PDCCH detection in the search space of Type 0 / 0A / 2 / 2A in the communication protocol are shown in Table 1:

[0152] Table 1

[0153] One reason why the aggregation level and number of candidates are defined directly in the communication protocol instead of using network device configuration is that when the terminal first monitors and schedules the Type 0 CSS of SIB1, it has not yet obtained information from the network device about the AL and number of candidates in the CSS, so it cannot receive the network device configuration and instead defines it directly in the protocol.

[0154] In RRC idle state, the terminal needs to first listen to the synchronization signal and MIB information to obtain the time-frequency location information of the Type 0 CSS. The DCI in the Type 0 CSS schedules SIB1, and SIB1 indicates the frequency domain location of the Type 0A-PDCCH CSS, Type 1-PDCCH CSS, Type 2-PDCCH CSS, and Type 2A-PDCCH CSS. The UE obtains the configuration information of the CSSs of the other types by receiving SIB1, and then can receive the corresponding DCI and further receive the corresponding PDSCH from these CSSs.

[0155] In some embodiments, configuring or defining multiple ALs for a search space is to facilitate adaptive link scheduling. For example, when channel conditions are good, the coding rate of the DCI can be higher, thus occupying less time-frequency resources, and a lower AL can be used; when channel conditions are poor, the coding rate of the DCI can be lower, thus occupying more time-frequency resources, and a higher AL can be used. Configuring multiple different time-frequency resource carrying positions (i.e., candidate number > 1) for one AL of a DCI in the search space is based on the following two purposes:

[0156] The first purpose is to facilitate inter-UE multiplexing in time and frequency resources.

[0157] While these search spaces can be configured independently, this doesn't mean their time-frequency resources won't overlap. In many cases, to avoid resource fragmentation, base stations may configure overlapping time-frequency resources for CSS and UE USS, or multiple UE USS may have overlapping time-frequency resource configurations. To minimize the probability of conflicts between different UE DCIs on overlapping time-frequency resources, an AL can have multiple different time-frequency resource carrying locations. This allows the base station to flexibly adjust the time-frequency resource locations of multiple UE DCIs, minimizing the probability of conflicts between different UEs.

[0158] The second purpose is to facilitate intra-UE multiplexing in time and frequency resources.

[0159] In a search space, a UE may need to blindly detect multiple DCI formats. Different DCI formats may have the same or different bit sizes, and the ALs they use may be the same or different. If it is necessary to distinguish these two DCIs in terms of time and frequency resources, then an AL also needs to have multiple different time and frequency positions.

[0160] Figure 2A is an interactive schematic diagram of PDCCH monitoring according to an embodiment of the present disclosure. As shown in Figure 2A, the embodiments of the present disclosure relate to PDCCH monitoring, and the above method includes:

[0161] Step S2101: The network device sends a configuration signaling message to the terminal.

[0162] In some embodiments, the terminal receives configuration signaling sent by the network device. It should be noted that the names of the configuration signaling are not limited in this disclosure embodiment, and may include, for example, configuration information, set configuration information, parameter configuration information, set configuration signaling, parameter configuration signaling, etc.

[0163] In some embodiments, the configuration signaling is used to configure at least one group, each group including at least one monitoring parameter, and at least one group corresponds to a search space. Alternatively, the configuration signaling is used to configure a parameter set, and the parameter set corresponds to a search space. This correspondence between the parameter set and the search space can also be described as each search space being configured with a corresponding parameter set, or as a one-to-one correspondence between the search space and the parameter set.

[0164] For example, search space 1 corresponds to parameter set A, search space 2 corresponds to parameter set B, and search space 3 corresponds to parameter set C. Furthermore, the embodiments disclosed herein are merely examples illustrating the correspondence between search spaces and parameter sets, and do not limit the scope of the correspondence between search spaces and parameter sets.

[0165] In some embodiments, the terminal is in a Radio Resource Control (RRC) connected state. Optionally, the terminal and the network device are in a connected state, therefore the information sent between the terminal and the network device is terminal-specific signaling. Alternatively, the configuration signaling sent by the network device corresponds to a dedicated terminal. For example, the configuration signaling in the embodiments of this disclosure is RRC signaling.

[0166] In step S2102, the network device sends dynamic information to the terminal.

[0167] In some embodiments, the terminal receives dynamic information sent by the network device. It should be noted that the names of the dynamic information are not limited in this disclosure, and may include, for example, indication information, dynamic indication information, parameter indication information, etc.

[0168] Dynamic information is used to dynamically indicate monitoring parameters. Alternatively, it can be understood as the network device instructing the monitoring parameters used by the terminal to be adjusted at any time via dynamic information. Upon receiving this dynamic information, the terminal can then determine the dynamically indicated monitoring parameters. Furthermore, dynamically indicating monitoring parameters can also be understood as allowing the network device to dynamically / at any time adjust the monitoring parameters used by the terminal, thus enabling real-time changes to the terminal's monitoring parameters.

[0169] In some embodiments, the monitoring parameter includes an aggregation level and a candidate number. There is a one-to-one correspondence between the aggregation level and the candidate number. For example, aggregation level 16 corresponds to candidate number 1, aggregation level 8 corresponds to candidate number 4, and aggregation level 16 corresponds to candidate number 2. The aggregation level indicates the amount of time-frequency resources occupied by a DCI, and the candidate number corresponding to the aggregation level indicates the maximum number of resource locations when monitoring a DCI in the PDCCH. The number of time-frequency resources included in these resource locations is the same as the number of time-frequency resources indicated by the aggregation level.

[0170] In this embodiment of the disclosure, after receiving dynamic information sent by the network device, the terminal can determine the monitoring parameters indicated by the dynamic information based on the received dynamic information.

[0171] In some embodiments, the monitoring parameters indicated by the dynamic information are a portion of at least one group of monitoring parameters configured by configuration signaling. The network device can configure a parameter set for the terminal via configuration signaling. This parameter set includes at least one group, and each group includes at least one monitoring parameter. Optionally, the name of the parameter set is not limited in this disclosure embodiment; it may be, for example, a parameter combination, a monitoring parameter combination, or a monitoring parameter set. Optionally, the name of the group is not limited in this disclosure embodiment; it may be, for example, a parameter group or a monitoring parameter group. Alternatively, a group can also be understood as a set of monitoring parameters; that is, a set of monitoring parameters can be a group, and each set of monitoring parameters includes at least one monitoring parameter. For example, a parameter set includes at least one set of monitoring parameters, and each set of monitoring parameters includes at least one monitoring parameter.

[0172] The parameter set is illustrated below with examples. For instance, a signaling configuration group is set up, and a group includes multiple monitoring parameters. Taking the aggregation level (AL) and the corresponding candidate number as an example, a group may include (AL / candidate number) = (4 / 4), (AL / candidate number) = (8 / 2), and (AL / candidate number) = (16 / 1). Alternatively, a group may include (AL / candidate number) = (4 / 8), (AL / candidate number) = (8 / 4), and (AL / candidate number) = (16 / 2). Other forms are also possible, and this embodiment is not limited to these forms.

[0173] For example, multiple groups can be configured for signaling, each group including multiple monitoring parameters. Taking the aggregation level (AL) and the corresponding candidate number for each aggregation level as an example, the following explanation is provided:

[0174] The first group includes:

[0175] (AL / number of candidates) = (4 / 4), and

[0176] (AL / number of candidates) = (8 / 2), and

[0177] (AL / number of candidates) = (16 / 1).

[0178] The second group includes:

[0179] (AL / number of candidates) = (4 / 8).

[0180] The third group includes:

[0181] (AL / number of candidates) = (16 / 2).

[0182] Other forms are also possible, and this disclosure does not limit the specific embodiments.

[0183] Optionally, if the configuration signaling configures a group, the terminal will by default use all monitoring parameters from one of the groups included in the parameter set to monitor the PDCCH before receiving dynamic information. Optionally, if the configuration signaling configures multiple groups, the terminal will by default use all monitoring parameters from one of the multiple groups included in the parameter set to monitor the PDCCH before receiving dynamic information.

[0184] Step S2103: After receiving the dynamic information, the terminal starts a timer.

[0185] In some embodiments, the terminal starts a timer after receiving dynamic information.

[0186] In some embodiments, the timer is used to indicate the duration for which the terminal monitors the PDCCH using monitoring parameters indicated by dynamic information. Alternatively, the timer is used to indicate the effective duration of the monitoring parameters indicated by dynamic information.

[0187] In this embodiment of the disclosure, the monitoring parameters indicated by the dynamic information are valid for a certain period of time. Therefore, after receiving the dynamic information, the terminal needs to start a timer accordingly. Before the timer expires, the terminal uses the monitoring parameters indicated by the dynamic information to monitor the PDCCH. After the timer expires, the terminal stops using the monitoring parameters indicated by the dynamic information.

[0188] Optionally, the timer can be represented as a timer. For example, the terminal starts the timer after receiving dynamic information.

[0189] It should be noted that the embodiments disclosed herein are illustrated using a timer as an example. In another embodiment, the terminal does not have a timer. Instead, it uses the monitoring parameters indicated by the dynamic information to monitor the PDCCH for a certain period of time, starting from when the terminal receives dynamic information. After a certain period of time, it stops using the monitoring parameters indicated by the dynamic information.

[0190] It should be noted that step S2103 in this embodiment is an optional step. In another embodiment, step S2103 may be omitted, and step S2104 may be executed directly. Correspondingly, this embodiment does not execute step S2103, nor will it execute step S2105. Alternatively, if this embodiment does not include step S2103, it can be understood that after the terminal receives the dynamic information, the monitoring parameter indicated by the dynamic information does not have a valid duration, and the terminal can continuously use the monitoring parameter indicated by the dynamic information.

[0191] Step S2104: The terminal uses monitoring parameters to monitor the PDCCH.

[0192] In this embodiment of the disclosure, after receiving dynamic information, the terminal can determine the monitoring parameters indicated by the dynamic information, and then use the monitoring parameters indicated by the dynamic information to monitor the PDCCH.

[0193] In some embodiments, the network device configures multiple groups via configuration signaling. Alternatively, the parameter set includes multiple groups. Each group includes multiple monitoring parameters, and the monitoring parameters indicated by the dynamic information are all the monitoring parameters included in one of the multiple groups. In embodiments of this disclosure, the terminal can determine a group indicated by the received dynamic information based on the dynamic information, and then monitor the PDCCH based on the monitoring parameters included in that group.

[0194] Optionally, the dynamic information includes a group identifier, which is used to identify a group. For example, the group identifier includes a certain number of bits to indicate the position of a group indicated by the dynamic information among multiple groups. For example, the configuration signaling configures two groups, namely group one and group two, and the index indication information is 1 bit. For example, if the 1 bit is 0, it indicates group one, and if the 1 bit is 1, it indicates group two.

[0195] Optionally, among the multiple groups configured in this signaling configuration, there is a default group. This default group is the group used by the terminal before receiving dynamic information, and the terminal will switch to using the group indicated by the dynamic information after receiving dynamic information. Alternatively, this default group can also be understood as a predefined group.

[0196] In general, the default group among multiple groups is the one that monitors the PDCCH the most times. However, when the network device sends dynamic information, it will indicate the group that monitors the PDCCH less frequently to reduce the number of times the terminal monitors the PDCCH, thereby reducing terminal power consumption. For example, the configuration signaling may include at least two groups: the first group has (AL / candidate number) = (4 / 4), (AL / candidate number) = (8 / 2), and (AL / candidate number) = (16 / 1); the second group has (AL / candidate number) = (16 / 2). The terminal defaults to using the first group, while the dynamic information indicates the second group. If the terminal uses the first group, it monitors the PDCCH 4+2+1=7 times, while using the second group, it monitors the PDCCH 2 times. Therefore, the terminal can reduce the number of times by 7-2=5, saving terminal power consumption.

[0197] In other cases, the default group among multiple groups is the one with the fewest PDCCH monitoring counts. When the network device sends dynamic information, it indicates the group with the most PDCCH monitoring counts. In this situation, the aggregation level of the group with the fewest PDCCH monitoring counts will be higher, while the aggregation level of the group with the most PDCCH monitoring counts will be lower. Therefore, to accommodate a large number of terminals within the cell, the group with the most PDCCH monitoring counts can be used, improving the flexibility of terminal PDCCH monitoring and reducing interference between different terminals. For example, the first group has (AL / candidate number) = (4 / 4) and (AL / candidate number) = (8 / 2), and the second group has (AL / candidate number) = (16 / 2). The terminal defaults to using the second group, where AL is 16, while the dynamic information indicates the first group. The aggregation levels only include 4 and 8, which can reduce interference between multiple terminals and improve the flexibility of terminal PDCCH monitoring.

[0198] In some embodiments, the terminal has multiple search spaces, and different search spaces correspond to different groups. In one case, there may be multiple groups corresponding to some search spaces without monitoring parameters with dynamic information indication. In this case, the terminal needs to determine the monitoring parameters used by the terminal through other means.

[0199] In some embodiments, the group identifier of one of the multiple groups indicated by dynamic information is not present among the multiple group identifiers configured in any search space. The monitoring parameters used by the terminal are any of the following:

[0200] The first type: the monitoring parameters included in any group used before any search space.

[0201] In this embodiment of the disclosure, before the terminal receives dynamic information, the terminal also uses monitoring parameters to monitor the PDCCH in any search space, so the terminal can continue to use the monitoring parameters included in the group previously used in any search space.

[0202] The second type: The monitoring parameters included in the group with the largest group identifier among multiple groups configured in any search space.

[0203] In this embodiment of the disclosure, any search space is configured with multiple groups, and the terminal can select the monitoring parameters included in the group with the largest group identifier from the multiple groups configured in any search space.

[0204] The third type: The monitoring parameters included in the group with the smallest group identifier among multiple groups configured in any search space.

[0205] In this embodiment of the disclosure, any search space is configured with multiple groups, and the terminal can select the monitoring parameters included in the group with the smallest group identifier from the multiple groups configured in any search space.

[0206] The fourth type: The monitoring parameters included in the default group used by any search space.

[0207] In this embodiment of the disclosure, the terminal will have a predefined group in any search space, and the terminal can use the monitoring parameters included in the default group.

[0208] In some embodiments, at least one group of configuration signaling configurations includes a group, and the monitoring parameter indicated by the dynamic information is one of the multiple monitoring parameters included in the group. Since the monitoring parameter indicated by the dynamic information may include an aggregation level, or it may include an aggregation level and the number of candidates corresponding to that aggregation level, different scenarios will be described below.

[0209] Optionally, if the monitoring parameter indicated by the dynamic information is an aggregation level, the terminal can use the aggregation level and the corresponding number of candidates to monitor the PDCCH. For example, the dynamic information includes a parameter value, which is a certain number of bits. The terminal determines the indicated aggregation level based on the certain number of bits indicated by the parameter value, and can also determine the corresponding number of candidates based on the indicated aggregation level. Here, the certain number of bits is greater than or equal to 1. For example, if the dynamic information includes 1 bit, and the 1 bit is 0, the terminal can select the largest aggregation level in a group and select the candidate number corresponding to the largest aggregation level. If the 1 bit is 1, the terminal can select the smallest aggregation level in a group and select the candidate number corresponding to the smallest aggregation level. As another example, if the dynamic information includes 2 bits, and both bits are 00, the terminal can select the largest aggregation level in a group and select the candidate number corresponding to the largest aggregation level. If both bits are 01, the terminal can select the smallest aggregation level in a group and select the candidate number corresponding to the smallest aggregation level. If both bits are 10, the terminal selects a predefined monitoring parameter.

[0210] Optionally, the aggregation level indicated by the dynamic information is either the highest or lowest aggregation level in a group. Where the aggregation level indicated by the dynamic information is the highest aggregation level in a group, the terminal uses the highest aggregation level and the corresponding number of candidates to monitor the PDCCH. For example, if a group configured by the signaling includes (AL / candidate number) = (4 / 4), (AL / candidate number) = (8 / 2), and (AL / candidate number) = (16 / 1), and the highest aggregation level indicated by the dynamic information is 16, then the number of candidates corresponding to 16 is 1. Therefore, the terminal uses (AL / candidate number) = (16 / 1) to monitor the PDCCH.

[0211] In the above embodiments, if the aggregation level indicated by the dynamic information received by the terminal is the largest aggregation level in a group, and the number of candidates is the number of candidates corresponding to the largest aggregation level, the indicated largest aggregation level can ensure that the PDCCH can be successfully monitored and the received DCI can be demodulated even when the channel conditions deteriorate in the future.

[0212] Alternatively, the aggregation level indicated by the dynamic information is the lowest aggregation level in a group. Correspondingly, the terminal uses the lowest aggregation level and the number of candidates corresponding to the lowest aggregation level to monitor the PDCCH. For example, a group configured by the signaling includes (AL / number of candidates) = (4 / 4), (AL / number of candidates) = (8 / 2), and (AL / number of candidates) = (16 / 1). The highest aggregation level indicated by the dynamic information is 4, so the number of candidates corresponding to 4 is 4. Therefore, the terminal uses (AL / number of candidates) = (4 / 4) to monitor the PDCCH.

[0213] In the above embodiments, if the aggregation level indicated by the dynamic information received by the terminal is the smallest aggregation level in a group, and the number of candidates is the number of candidates corresponding to the smallest aggregation level, the indicated smallest aggregation level can be guaranteed to be used when the channel conditions are good, thus ensuring the reliability of receiving DCI through the monitored PDCCH.

[0214] Alternatively, the aggregation level indicated by the dynamic information may be a predefined aggregation level within a group. Correspondingly, the terminal uses the predefined aggregation level and the number of candidates corresponding to the predefined aggregation level to monitor the PDCCH. For example, a group configured by the signaling includes (AL / number of candidates) = (4 / 4), (AL / number of candidates) = (8 / 2), and (AL / number of candidates) = (16 / 1). The predefined aggregation level indicated by the dynamic information is 8, and the number of candidates corresponding to 8 is 2. Therefore, the terminal uses (AL / number of candidates) = (8 / 2) to monitor the PDCCH.

[0215] In the above embodiments, if the aggregation level indicated by the dynamic information received by the terminal is a predefined aggregation level in a group, the network device can indicate the aggregation level even when the channel conditions are not determined, thus preventing the dynamic information from failing to indicate the aggregation level.

[0216] It should be noted that this embodiment of the disclosure uses the dynamic information indicating one monitoring parameter in a group as an example for illustration. In another embodiment, the dynamic information may also indicate some monitoring parameters in a group, that is, the number of monitoring parameters indicated by the dynamic information is not one, but multiple. For example, the aggregation level indicated by the dynamic information is the first two largest aggregation levels in a group, or the first two smallest aggregation levels in a group, or other cases, which are not limited in this embodiment of the disclosure.

[0217] In this embodiment of the disclosure, before receiving dynamic information, the terminal uses all the monitoring parameters in a group configured by the configuration signaling by default. After receiving dynamic information, it uses some of the monitoring parameters in a group configured by the configuration signaling. When the terminal uses all the monitoring parameters in a group configured by the configuration signaling, the maximum number of times it monitors the PDCCH will be higher than the maximum number of times it monitors the PDCCH using the monitoring parameters indicated by the dynamic information. Therefore, when the terminal monitors the PDCCH using the monitoring parameters indicated by the dynamic information, it will save terminal power consumption.

[0218] For example, as shown in Figure 2B, assuming that a group defined by the communication protocol includes (AL / candidate number) = (16 / 2), (AL / candidate number) = (8 / 4), and (AL / candidate number) = (4 / 8), the left side shows that when the terminal uses this group to monitor the PDCCH, the number of monitoring times is 2+4+8=14. During data transmission and reception, the network device can dynamically instruct the terminal to use (AL / candidate number) = (16 / 1) to monitor the PDCCH based on the real-time situation. For example, the right side shows that the number of monitoring times using (AL / candidate number) = (16 / 1) to monitor the PDCCH is 1. Therefore, the terminal can reduce the number of monitoring times by 14-1=13, which can save the terminal's energy consumption for monitoring the PDCCH.

[0219] In some embodiments, the monitoring parameters indicated by the dynamic information are aggregation level and candidate quantity, with a one-to-one correspondence between the aggregation level and the candidate quantity. The terminal can use the aggregation level and candidate quantity indicated by the dynamic information to monitor the PDCCH. For example, the dynamic information includes a certain number of bits. The terminal determines the indicated aggregation level based on this certain number of bits, and can also determine the corresponding candidate quantity based on the indicated aggregation level. The certain number of bits is greater than or equal to 1. For example, if the dynamic information includes 1 bit, and 1 bit is 0, the terminal can select the largest aggregation level and the corresponding candidate quantity in a group. If 1 bit is 1, the terminal can select the smallest aggregation level and the corresponding candidate quantity in a group. As another example, if the dynamic information includes 2 bits, and both bits are 00, the terminal can select the largest aggregation level and the corresponding candidate quantity in a group. If both bits are 01, the terminal can select the smallest aggregation level and the corresponding candidate quantity in a group. If both bits are 10, the terminal selects a predefined monitoring parameter.

[0220] Optionally, the aggregation level indicated by the dynamic information is the highest aggregation level in a group and the number of candidates corresponding to the highest aggregation level; for example, a group configured by the signaling includes (AL / number of candidates) = (4 / 4), (AL / number of candidates) = (8 / 2), and (AL / number of candidates) = (16 / 1). The highest aggregation level indicated by the dynamic information is 16, and the number of candidates indicated by the dynamic information is 1, which corresponds to the number of candidates for aggregation level 16. Therefore, the terminal uses (AL / number of candidates) = (16 / 1) to monitor the PDCCH.

[0221] In the above embodiments, if the aggregation level indicated by the dynamic information received by the terminal is the largest aggregation level in the group, the number of candidates indicated by the dynamic information is the number of candidates corresponding to the largest aggregation level. The indicated largest aggregation level can ensure that the PDCCH can be monitored and the received DCI can be demodulated smoothly even when the channel conditions deteriorate in the future.

[0222] Alternatively, the aggregation level indicated by the dynamic information is the smallest aggregation level in a group and the number of candidates corresponding to the smallest aggregation level. For example, a group configured by the signaling includes (AL / number of candidates) = (4 / 4), (AL / number of candidates) = (8 / 2), and (AL / number of candidates) = (16 / 1). The largest aggregation level indicated by the dynamic information is 4, and the number of candidates indicated by the dynamic information is the number of candidates corresponding to aggregation level 4, which is 4. Therefore, the terminal uses (AL / number of candidates) = (4 / 4) to monitor the PDCCH.

[0223] In the above embodiments, if the aggregation level indicated by the dynamic information received by the terminal is the smallest aggregation level in a group, and the number of candidates is the number of candidates corresponding to the smallest aggregation level, the indicated smallest aggregation level can be guaranteed to be used when the channel conditions are good, thus ensuring the reliability of receiving DCI through the monitored PDCCH.

[0224] Alternatively, the aggregation level indicated by the dynamic information is a predefined aggregation level in a group and the number of candidates corresponding to the predefined aggregation level. For example, a group configured by the signaling includes (AL / number of candidates) = (4 / 4), (AL / number of candidates) = (8 / 2), and (AL / number of candidates) = (16 / 1). The predefined aggregation level indicated by the dynamic information is 8. Then the number of candidates indicated by the dynamic information is 2, which corresponds to aggregation level 8. Therefore, the terminal uses (AL / number of candidates) = (8 / 2) to monitor the PDCCH.

[0225] In the above embodiments, if the aggregation level indicated by the dynamic information received by the terminal is a predefined aggregation level in a group, the network device can indicate the aggregation level even when the channel conditions are not determined, thus preventing the dynamic information from failing to indicate the aggregation level.

[0226] In some embodiments, the terminal can monitor the PDCCH for different search spaces.

[0227] Optionally, the terminal monitors the PDCCH in the search space configured on all carriers of the terminal. Alternatively, the terminal monitors the PDCCH in the search space configured on the carrier where the dynamic information is located. Optionally, the terminal monitors the PDCCH in the search space indicated by the dynamic information.

[0228] Specifically, if the terminal monitors the PDCCH in the search space indicated by dynamic information, and the search space indicated by the dynamic information exists in different ways. For example, the search space indicated by the dynamic information is the search space indicated by at least one search space identifier associated with the dynamic information. Each piece of dynamic information is associated with at least one search space identifier, and the monitoring parameters of the dynamic information indication are effective for the search space indicated by at least one search space identifier.

[0229] For example, dynamic information includes at least one index, with each index indicating a search space. This index is represented in bitmap form, with each bit associated with a search space. It should be noted that when using a bitmap, each search space can have two groups, or each group can contain two monitored parameters. Alternatively, the index can be represented in bit block map form, with each bit block comprising multiple bits and each bit block associated with a search space. It should be noted that each search space can have more than two groups, or each group can contain more than two monitored parameters.

[0230] It should be noted that the execution order of steps S2103 and S2104 is not limited. Step S2103 can be executed after step S2104, or steps S2103 and S2104 can be executed simultaneously.

[0231] In some embodiments, the dynamic information is PHY information or MAC information.

[0232] Step S2105: After the timer expires, the terminal uses predefined monitoring parameters to monitor the PDCCH.

[0233] In this embodiment of the disclosure, when the timer expires, it indicates that the monitoring parameters indicated by the dynamic information have failed, so the terminal needs to revert to monitoring the PDCCH using predefined monitoring parameters.

[0234] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0235] In some embodiments, “get,” “obtain,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.

[0236] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0237] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0238] The PDCCH monitoring involved in the embodiments of this disclosure may include at least one of steps S2101 to S2105. For example, at least one of steps S2101 to S2105 may be implemented as a standalone embodiment.

[0239] In some embodiments, at least one of steps S2101 to S2105 is optional, and one or more of these steps may be omitted or substituted in different embodiments. In some embodiments, refer to the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, which will not be repeated here.

[0240] Figure 3 is a schematic flowchart of PDCCH monitoring according to an embodiment of the present disclosure. As shown in Figure 3, the embodiment of the present disclosure relates to PDCCH monitoring, and the above method includes:

[0241] Step S3101: The network device sends dynamic information to the terminal.

[0242] In some embodiments, dynamic information is used to dynamically indicate monitoring parameters.

[0243] In some embodiments, the implementation of step S3101 can be referred to the implementation of step S2102 in FIG2A, and will not be repeated here.

[0244] In some embodiments, the method further includes:

[0245] The network device receives configuration signaling, which is used to configure at least one group, each group including at least one monitoring parameter, and the at least one group corresponds to the search space.

[0246] In some embodiments, the dynamic information includes a group identifier, and monitoring the PDCCH using the monitoring parameters includes:

[0247] The PDCCH is monitored using monitoring parameters in a group identified by the group identifier.

[0248] In some embodiments, the group identifier of one of the multiple groups indicated by the dynamic information is not present in any of the multiple group identifiers configured in any search space; the monitoring parameter used by the terminal is any one of the following:

[0249] The monitoring parameters included in the group previously used in any search space;

[0250] The monitoring parameters included in the group with the largest group identifier among the multiple groups configured in any search space;

[0251] The monitoring parameters included in the group with the smallest group identifier among the multiple groups configured in any search space;

[0252] The monitoring parameters included in the default group used by any search space.

[0253] In some embodiments, the dynamic information includes parameter values, and monitoring the PDCCH using the monitoring parameters includes:

[0254] The PDCCH is monitored using a monitoring parameter indicated by the parameter value.

[0255] In some embodiments, the monitoring parameter is an aggregation level;

[0256] The monitoring of the PDCCH based on the monitoring parameters includes: monitoring the PDCCH using the aggregation level and the number of candidates corresponding to the aggregation level;

[0257] The aggregation level is used to indicate the amount of time-frequency resources occupied by the downlink control information (DCI) carried by the PDCCH. The number of candidates corresponding to the aggregation level is used to indicate the number of monitoring areas. The monitoring area refers to the area in which the terminal monitors the DCI carried by the PDCCH. The monitoring area includes the number of time-frequency resources indicated by the aggregation level.

[0258] In some embodiments, the aggregation level is the largest or smallest aggregation level in the group.

[0259] In some embodiments, monitoring the PDCCH includes:

[0260] Monitor the PDCCH in the search space configured on all carriers of the terminal; or,

[0261] Monitor the PDCCH in the search space configured on the carrier where the dynamic information is located;

[0262] Monitor the PDCCH in the search space indicated by the dynamic information.

[0263] In some embodiments, the search space indicated by the dynamic information is a search space indicated by at least one search space identifier associated with the dynamic information; or,

[0264] The dynamic information includes at least one index, and each index indicates a search space.

[0265] In some embodiments, the method further includes:

[0266] Upon receiving the dynamic information, a timer is started. The timer is used to indicate the duration for which the terminal monitors the PDCCH using the monitoring parameters indicated by the dynamic information.

[0267] After the timer expires, the PDCCH is monitored using predefined monitoring parameters.

[0268] In some embodiments, the dynamic information is physical layer PHY information or media access control (MAC) information.

[0269] In some embodiments, the terminal is in RRC connection state.

[0270] Step S3102: The terminal receives dynamic information sent by the network device.

[0271] In some embodiments, the implementation of step S3102 can be found in the implementation of step S2102 in FIG2A, and will not be repeated here.

[0272] Step S3103: The terminal uses monitoring parameters to monitor the PDCCH.

[0273] In some embodiments, the method further includes:

[0274] A configuration signaling message is sent to the terminal. The configuration signaling message is used to configure at least one group, each group including at least one monitoring parameter, and the at least one group has a corresponding relationship with the search space.

[0275] In some embodiments, the dynamic information includes a group identifier, which identifies monitoring parameters in a group used by the terminal to monitor the PDCCH.

[0276] In some embodiments, the group identifier of one of the multiple groups indicated by the dynamic information is not present in any of the multiple group identifiers configured in any search space; the monitoring parameter used by the terminal is any one of the following:

[0277] The monitoring parameters included in the group previously used in any search space;

[0278] The monitoring parameters included in the group with the largest group identifier among the multiple groups configured in any search space;

[0279] The monitoring parameters included in the group with the smallest group identifier among the multiple groups configured in any search space;

[0280] The monitoring parameters included in the default group used by any search space.

[0281] In some embodiments, the dynamic information includes parameter values, which indicate a monitoring parameter used by the terminal to monitor the PDCHH.

[0282] In some embodiments, the monitoring parameter is an aggregation level;

[0283] The aggregation level and the number of candidates corresponding to the aggregation level are used by the terminal to monitor the PDCCH;

[0284] The aggregation level is used to indicate the amount of time-frequency resources occupied by the downlink control information (DCI) carried by the PDCCH. The number of candidates corresponding to the aggregation level is used to indicate the number of monitoring areas. The monitoring area refers to the area in which the terminal monitors the DCI carried by the PDCCH. The monitoring area includes the number of time-frequency resources indicated by the aggregation level.

[0285] In some embodiments, the aggregation level is the largest or smallest aggregation level in the group.

[0286] In some embodiments, the PDCCH in the search space configured on all carriers of the terminal is monitored by the terminal; or,

[0287] The PDCCH in the search space configured on the carrier where the dynamic information is located is monitored by the terminal;

[0288] The PDCCH in the search space indicated by the dynamic information is monitored by the terminal.

[0289] In some embodiments, the search space indicated by the dynamic information is a search space indicated by at least one search space identifier associated with the dynamic information; or,

[0290] The dynamic information includes at least one index, and each index indicates a search space.

[0291] In some embodiments, the dynamic information is physical layer PHY information or media access control (MAC) information.

[0292] Figure 4 is a schematic flowchart of PDCCH monitoring according to an embodiment of the present disclosure. As shown in Figure 4, the present disclosure relates to PDCCH monitoring, and the above method includes:

[0293] In step S4101, for a UE that has entered the RRC connected state, the base station can dynamically adjust the number of AL / candidates for PDCCH blind detection.

[0294] In this case, the blind detection of PDCCH is similar to the monitoring of PDCCH in the above embodiments, AL is the aggregation level in the above embodiments, and the number of candidates is the number of candidates in the above embodiments.

[0295] Optionally, when the traffic load at the base station is low or the UE has energy-saving requirements, the UE can be dynamically instructed to use another set of AL / candidate numbers to listen to the PDCCH, which requires fewer blind detections, thereby reducing the UE's PDCCH blind detection overhead.

[0296] For example, for a UE's search space, suppose the base station configures the original PDCCH blind detection AL / candidate number as follows via RRC: (AL / candidate number) = (4 / 8), (AL / candidate number) = (8 / 4), and (AL / candidate number) = (16 / 2). During data transmission and reception, the base station can dynamically instruct the UE to only listen to AL=16 in this search space, and its set time-frequency resource location is only 1. Comparing these two scenarios, assuming the UE only monitors 1 DCI format and 1 RNTI, the UE can save 8+4+2-1=13 PDCCH blind detection attempts.

[0297] In step S4102, the UE performs a blind PDCCH test based on the adjusted AL / candidate number.

[0298] Step S4102 is similar to the terminal monitoring PDCCH in step S2103 above.

[0299] Example 1:

[0300] In some embodiments, for a search space, the base station semi-statically configures N sets of AL / candidate quantity parameters via higher-layer signaling (note: each set of AL / candidate quantity can include one or more ALs, and each AL corresponds to one or more candidate quantities). One set of AL / candidate quantity parameters is predefined in these N sets of configurations. When no other indication is received, the UE will apply this predefined set of AL / candidate quantity parameters to perform PDCCH blind detection.

[0301] The base station can use PHY (physical layer) or MAC layer signaling to dynamically indicate the AL / candidate number parameters of the search space to be applied.

[0302] 1. For example, using Bits are used to indicate which of the N sets of ALs / candidates is being used.

[0303] The application scope of dynamic indication signaling can be:

[0304] a) The signaling of the dynamic indication is effective for the configuration search space on all carriers of the UE. Furthermore, the search space can be limited to the search space configured by the base station for the UE through UE-specific signaling.

[0305] b) The dynamic indication signaling takes effect for the search space configured for the UE on the carrier where the dynamic signaling is located, and does not take effect for the search spaces on other carriers of the UE. Further, it can be specified that the search space is configured for the UE by the base station through UE specific signaling. In the above a) and b), it is possible that there are N sets of AL / candidate quantities in some search spaces, but only M (M < N) sets of AL / candidate quantity configurations in some search spaces. For example, for search space 1, it is configured with N = 4 sets of AL / candidate quantities, and for search space 2, it is configured with M = 2 sets of AL / candidate quantities. When the instruction of the dynamic indication indicates that the third set of AL / candidate quantities is to be applied, the behavior of the UE can be:

[0306] i. Apply the third set of AL / candidate quantities to search space 1 for PDCCH monitoring. For search space 2, since the AL / candidate quantity index indicated by the instruction exceeds the maximum index of the AL / candidate quantities in this search space, the UE continues to use the AL / candidate quantities previously used in search space 2 for PDCCH monitoring.

[0307] ii. Apply the third set of AL / candidate quantities to search space 1 for PDCCH monitoring. For search space 2, since the AL / candidate quantity index indicated by the instruction exceeds the maximum index of the AL / candidate quantities in this search space, the UE will apply the AL / candidate quantity with the maximum index in search space 2 for PDCCH monitoring.

[0308] iii. Apply the third set of AL / candidate quantities to search space 1 for PDCCH monitoring. For search space 2, since the AL / candidate quantity index indicated by the instruction exceeds the maximum index of the AL / candidate quantities in this search space, the UE will apply the AL / candidate quantity with the minimum index in search space 2 for PDCCH monitoring.

[0309] iv. Apply the third set of AL / candidate quantities to search space 1 for PDCCH monitoring. For search space 2, since the AL / candidate quantity index indicated by the instruction exceeds the maximum index of the AL / candidate quantities in this search space, the UE will apply the default AL / candidate quantity in search space 2 for PDCCH monitoring. The default AL / candidate quantity can be configured by the network. For example, the network configures "default AL / candidate quantity" for search

[0310] c) The dynamic indication signaling only takes effect for specific search spaces. There is a predefined correspondence between it and the search spaces. For example:

[0311] i. If a dynamic indication signaling is associated with the labels of one or more search spaces, then the dynamic indication signaling is only effective for the search spaces indicated by the one or more labels.

[0312] ii. Dynamic indication signaling uses a bitmap approach, where each bit is associated with a search space. Each bit block indicates the AL / candidate count index applied to that search space. (Suitable for N=2 cases)

[0313] iii. Dynamic indication signaling uses a bit block map approach, where each bit block is associated with a search space. Each bit block indicates the AL / candidate count index applied to that search space (suitable for cases where N>2).

[0314] Example 2:

[0315] In some embodiments, for a search space, the base station semi-statically configures N sets of AL candidate numbers via higher-layer signaling (Note: each set of AL / candidate numbers can include one or more ALs, and each AL corresponds to one or more candidate numbers). One set of AL / candidate numbers is predefined in this N-set configuration. When no other indication is received, the UE will apply this predefined set of AL / candidate numbers for PDCCH blind detection. Each time the dynamic indication signaling is received, the UE starts a timer, which decrements in the time domain. When the timer expires, the UE falls back to the predefined AL / candidate number.

[0316] 1. Assuming the search space contains N non-default ALs / number of candidates, you can use... bit or Bits are used to indicate which of the N sets of ALs / candidates is being used.

[0317] 2. The application scope of this dynamic indication signaling and its corresponding timer can be:

[0318] a) The dynamic indication signaling and its corresponding timer are effective for the configuration search space on all carriers of the UE. Furthermore, the search space can be limited to the search space configured by the base station for the UE through UE-specific signaling.

[0319] b) The dynamically indicated signaling and its corresponding timer are effective for the search space configured for the UE on the carrier where the dynamic signaling is located, and are not effective for the search space on other carriers of the UE. Further, the search space can be defined as the one configured by the base station for the UE through UE-specific signaling. In the above a) and b), it is possible that there are N sets of AL / candidate quantities in some search spaces, but only M (M < N) sets of AL / candidate quantity configurations in some search spaces. For example, for search space 1, it is configured with N = 4 sets of AL / candidate quantities, and for search space 2, it is configured with M = 2 sets of AL / candidate quantities. When the instruction of the dynamic indication indicates that the third set of AL / candidate quantities is to be applied, the behavior of the UE can be:

[0320] i. Apply the third set of AL / candidate quantities to search space 1 for PDCCH monitoring. For search space 2, since the AL / candidate quantity index indicated by the instruction exceeds the maximum index of the AL / candidate quantities in this search space, the UE continues to use the AL / candidate quantities previously used in search space 2 for PDCCH monitoring

[0321] ii. Apply the third set of AL / candidate quantities to search space 1 for PDCCH monitoring. For search space 2, since the AL / candidate quantity index indicated by the instruction exceeds the maximum index of the AL / candidate quantities in this search space, the UE will apply the AL / candidate quantity with the maximum index in search space 2 for PDCCH monitoring

[0322] iii. Apply the third set of AL / candidate quantities to search space 1 for PDCCH monitoring. For search space 2, since the AL / candidate quantity index indicated by the instruction exceeds the maximum index of the AL / candidate quantities in this search space, the UE will apply the AL / candidate quantity with the minimum index in search space 2 for PDCCH monitoring.

[0323] iv. Apply the third set of AL / candidate quantities to search space 1 for PDCCH monitoring. For search space 2, since the AL / candidate quantity index indicated by the instruction exceeds the maximum index of the AL / candidate quantities in this search space, the UE will apply the default AL / candidate quantity in search space 2 for PDCCH monitoring.

[0324] c) The dynamically indicated signaling is only effective for specific search spaces, and there is a predefined correspondence between it and the search spaces. For example:

[0325] i. The label of one or more search spaces associated with the dynamically indicated signaling, then the dynamically indicated signaling and its corresponding timer are only effective for the one or more search spaces indicated by the label.

[0326] ii. Dynamic indication signaling uses a bitmap approach, with each bit associated with a search space. Each bit indicates the AL / candidate number parameter index applied to that search space. (Suitable for N=2 cases)

[0327] iii. Dynamic indication signaling uses a bit block map approach, where each bit block is associated with a search space. Each bit block indicates the AL / candidate number parameter index applied to that search space. (Suitable for cases where N>2)

[0328] iv. In this case, the timer only applies to that specific search space. If multiple search spaces are involved, their timers can be the same or independent.

[0329] Example 3:

[0330] In some embodiments, for a search space, the base station semi-statically configures a set of ALs / candidates (which may contain one or more ALs, and each AL corresponds to one or more candidate numbers) via higher-layer signaling. In the absence of other indications, the UE will apply this predefined set of ALs / candidates to perform PDCCH blind detection.

[0331] 1. The base station uses signaling from the PHY layer or MAC layer to dynamically indicate the AL / candidate number parameter of the search space to be blindly detected.

[0332] 1. This dynamic indication signaling uses M (M>=1) bits to indicate the number of ALs / candidates to be applied to the search space for blind detection. The AL parameter to be applied is one or more ALs from the aforementioned set of ALs / candidates, or a default value defined by the protocol, such as AL=16, or, for example, the maximum value of all ALs in the search space configuration; the number of candidates to be applied is the number of candidates corresponding to the one or more ALs, or a default value defined by the protocol, such as candidate number=1.

[0333] 2. The application scope of this dynamic indication signaling can be:

[0334] a) The signaling of the dynamic indication is effective for the configuration search space on all carriers of the UE. Furthermore, the search space can be limited to the search space configured by the base station for the UE through UE-specific signaling.

[0335] b) The signaling of the dynamic indication is effective for the search space configured for the UE on the carrier where the dynamic signaling is located, but not for the search space on other carriers of the UE. Furthermore, the search space can be limited to the one configured for the UE by the base station through UE-specific signaling.

[0336] c) Dynamic instruction signaling only applies to specific search spaces. There is a predefined correspondence between the instruction and the search space, for example:

[0337] i. If a dynamic indication signaling is associated with the labels of one or more search spaces, then the dynamic indication signaling is only effective for the search spaces indicated by the one or more labels.

[0338] ii. Dynamic indication signaling uses a bitmap approach, with each bit associated with a search space. Each bit indicates the AL / candidate number index applied to that search space. That is, each search space only requires one bit to indicate the AL / candidate number to be applied, suitable for cases where there are only two AL / candidate number combinations in a set of parameters within the search space. It is also suitable for cases where the PDCCH blind detection parameters to be applied are the protocol-defined default AL / candidate number.

[0339] iii. Dynamic indication signaling uses a bit block map approach, where each bit block is associated with a search space. Each bit block indicates the index of the number of ALs / candidates to be applied in that search space. That is, each search space requires >1 bit to indicate the number of ALs / candidates to be applied, which is suitable for cases where there are >2 combinations of ALs / candidates in one set of parameters in the search space.

[0340] Example 4:

[0341] In some embodiments, for a search space, the base station semi-statically configures a set of AL / candidate numbers via higher-layer signaling (the set of AL / candidate numbers may contain one or more ALs, and each AL corresponds to one or more candidates). In the absence of other indications, the UE will apply this predefined set of AL / candidate number parameters to perform PDCCH blind detection.

[0342] The base station uses signaling at the PHY layer or MAC layer to dynamically indicate the number of ALs / candidates to be applied in the search space. Each time the UE receives this dynamic indication signaling, it starts a timer, which decrements in the time domain. When the timer expires, the UE returns to the predefined number of ALs / candidates.

[0343] 1. This dynamic indication signaling uses M (M>=1) bits to indicate the number of ALs / candidates to be applied to the search space for blind detection. The AL parameter to be applied is one or more ALs from the aforementioned set of ALs / candidates, or a default value defined by the protocol, such as AL=16, or, for example, the maximum value of all ALs in the search space configuration; the number of candidates to be applied is the number of candidates corresponding to the one or more ALs, or a default value defined by the protocol, such as candidate number=1.

[0344] 2. The application scope of this dynamic indication signaling and its corresponding timer can be:

[0345] a) The dynamic indication signaling and its corresponding timer are effective for the configuration search space on all carriers of the UE. Furthermore, the search space can be limited to the search space configured by the base station for the UE through UE-specific signaling.

[0346] b) The dynamic indication signaling and its corresponding timer are effective for the search space configured for the UE on the carrier where the dynamic signaling is located, but are not effective for the search space on other carriers of the UE. Furthermore, the search space can be limited to the one configured for the UE by the base station through UE-specific signaling.

[0347] c) Dynamic indication signaling and its corresponding timer only apply to specific search spaces. There is a predefined correspondence between them and the search space, for example:

[0348] i. If a dynamic indication signaling is associated with the labels of one or more search spaces, then the dynamic indication signaling and its corresponding timer are only effective for the search spaces indicated by the one or more labels.

[0349] ii. Dynamic indication signaling uses a bitmap approach, with each bit associated with a search space. Each bit indicates the AL / candidate number index applied to that search space. That is, each search space only requires one bit to indicate the AL / candidate number to be applied, suitable for cases where there are only two AL / candidate number combinations in a set of parameters within the search space. It is also suitable for cases where the PDCCH blind detection parameters to be applied are the protocol-defined default AL / candidate number.

[0350] iii. Dynamic indication signaling uses a bit block map approach, where each bit block is associated with a search space. Each bit block indicates the index of the number of ALs / candidates to be applied in that search space. That is, each search space requires more than 1 bit to indicate the number of ALs / candidates to be applied, which is suitable for cases where there are more than 2 types of ALs / candidates in one set of parameters in the search space.

[0351] iv. In this case, the timer only applies to that specific search space. If multiple search spaces are involved, their timers can be the same or independent.

[0352] This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Furthermore, another apparatus is proposed that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0353] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0354] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, 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 relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using 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 configuring the hardware circuit 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. Furthermore, 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), or a Deep Learning Processing Unit (DPU).

[0355] Figure 5A is a schematic diagram of the structure of a terminal according to an embodiment of this disclosure. Terminal 5100 is used to execute any of the above methods. In some embodiments, as shown in Figure 5A, terminal 5100 may include at least one of a transceiver module 5101, a processing module 5102, etc. In some embodiments, transceiver module 5101 is used to receive dynamic information sent by a network device, the dynamic information being used to dynamically indicate monitoring parameters; processing module 5102 is used to monitor the PDCCH using the monitoring parameters.

[0356] Figure 5B is a schematic diagram of the structure of a network device according to an embodiment of this disclosure. The network device 5200 is used to perform any of the above methods. In some embodiments, as shown in Figure 5B, the network device 5200 may include at least one of a transceiver module 5201, a processing module 5202, etc. In some embodiments, the transceiver module 5201 is used to send dynamic information to a terminal, the dynamic information being used to dynamically indicate monitoring parameters; the monitoring parameters are used by the terminal to monitor the PDCCH.

[0357] Optionally, the transceiver module described above is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal in any of the above methods, which will not be elaborated here. Optionally, the processing module described above is used to perform at least one of the other steps performed by the terminal in any of the above methods, which will not be elaborated here.

[0358] Figure 6A is a schematic diagram of the structure of the communication device 6100 proposed in an embodiment of this disclosure. The communication device 6100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a sensing function device, a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 6100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0359] As shown in Figure 6A, the communication device 6100 is used to execute any of the above methods. In some embodiments, the communication device 6100 includes one or more processors 6101. The processor 6101 may be a general-purpose processor or a dedicated processor, such as 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 sensing devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 6100 is used to execute any of the above methods. Optionally, one or more processors 6101 are used to invoke instructions to cause the communication device 6100 to execute any of the above methods.

[0360] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps such as sending and / or receiving in the above-described method, and the processor 6101 performs at least one of the other steps. In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., can be used interchangeably; the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0361] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data and / or instructions. Optionally, one or more processors 6101 are used to invoke instructions stored in the memory 6103 to cause the communication device 6100 to perform any of the above methods. Optionally, all or part of the memory 6103 may also be located outside the communication device 6100. In an optional embodiment, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuit 6104 is connected to the memory 6102 and can be used to receive data and / or instructions from the memory 6102 or other devices, and can be used to send data and / or instructions to the memory 6103 or other devices. For example, the interface circuit 6104 can read data and / or instructions stored in the memory 6103 and send the data and / or instructions to the processor 6101.

[0362] The communication device 6100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 6100 described in this disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited by FIG. 6A. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data, programs and / or instructions; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (6) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (7) others, etc.

[0363] Figure 6B is a schematic diagram of the structure of chip 6200 according to an embodiment of this disclosure. For cases where the communication device 6100 can be a chip or a chip system, please refer to the schematic diagram of chip 6200 shown in Figure 6B, but it is not limited thereto.

[0364] Chip 6200 includes one or more processors 6201. Chip 6200 is used to perform any of the methods described above.

[0365] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data and / or instructions. Optionally, all or part of the memories 6203 may be located outside of chip 6200. Optionally, interface circuit 6202 is connected to memory 6203, and interface circuit 6202 can be used to receive data and / or instructions from memory 6203 or other devices, and interface circuit 6202 can be used to send data and / or instructions to memory 6203 or other devices. For example, interface circuit 6202 can read data and / or instructions stored in memory 6203 and send the data and / or instructions to processor 6201.

[0366] In some embodiments, the interface circuit 6202 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method. For example, the interface circuit 6202 performing the communication steps, such as sending and / or receiving, in the above-described method means that the interface circuit 6202 performs data and / or instruction interaction between the processor 6201, the chip 6200, the memory 6203, or the transceiver device. In some embodiments, the processor 6201 performs at least one of the other steps.

[0367] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0368] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform 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 not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0369] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.

[0370] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods. Industrial applicability

[0371] Network devices can dynamically indicate monitoring parameters to terminals through dynamic information. Terminals can then monitor the PDCCH based on these dynamically indicated parameters, which improves the flexibility of the monitoring parameters used by the terminal when monitoring the PDCCH and thus ensures the reliability of communication between the terminal and the network device.

Claims

1. A method for monitoring the Physical Downlink Control Channel (PDCCH), wherein, The method is executed by a terminal, and the method includes: Receive dynamic information sent by network devices, the dynamic information being used to dynamically indicate monitoring parameters; Use the monitoring parameters to monitor PDCCH.

2. The method according to claim 1, wherein, The method further includes: The network device receives configuration signaling, which is used to configure at least one group, each group including at least one monitoring parameter, and the at least one group corresponds to the search space.

3. The method according to claim 1 or 2, wherein, The dynamic information includes a group identifier, and the monitoring of the PDCCH using the monitoring parameters includes: The PDCCH is monitored using monitoring parameters in a group identified by the group identifier.

4. The method according to claim 3, wherein, The group identifier of one of the multiple groups indicated by the dynamic information is not present in any of the multiple group identifiers configured in any search space; the monitoring parameter used by the terminal is any one of the following: The monitoring parameters included in the group previously used in any search space; The monitoring parameters included in the group with the largest group identifier among the multiple groups configured in any search space; The monitoring parameters included in the group with the smallest group identifier among the multiple groups configured in any search space; The monitoring parameters included in the default group used by any search space.

5. The method according to claim 1 or 2, wherein, The dynamic information includes parameter values, and the monitoring of the PDCCH using the monitoring parameters includes: The PDCCH is monitored using a monitoring parameter indicated by the parameter value.

6. The method according to claim 5, wherein, The monitoring parameters are aggregated levels; The monitoring of the PDCCH based on the monitoring parameters includes: monitoring the PDCCH using the aggregation level and the number of candidates corresponding to the aggregation level; The aggregation level is used to indicate the amount of time-frequency resources occupied by the downlink control information (DCI) carried by the PDCCH. The number of candidates corresponding to the aggregation level is used to indicate the number of monitoring areas. The monitoring area refers to the area in which the terminal monitors the DCI carried by the PDCCH. The monitoring area includes the number of time-frequency resources indicated by the aggregation level.

7. The method according to claim 6, wherein, The aggregation level is the largest or smallest aggregation level in the group.

8. The method according to any one of claims 1 to 7, wherein, The monitoring of PDCCH includes: Monitor the PDCCH in the search space configured on all carriers of the terminal; or, Monitor the PDCCH in the search space configured on the carrier where the dynamic information is located; Monitor the PDCCH in the search space indicated by the dynamic information.

9. The method according to claim 8, wherein, The search space indicated by the dynamic information is the search space indicated by at least one search space identifier associated with the dynamic information; or, The dynamic information includes at least one index, and each index indicates a search space.

10. The method according to any one of claims 1 to 9, wherein The method further includes: Upon receiving the dynamic information, a timer is started. The timer is used to indicate the duration for which the terminal monitors the PDCCH using the monitoring parameters indicated by the dynamic information. After the timer expires, the PDCCH is monitored using predefined monitoring parameters.

11. The method according to any one of claims 1 to 10, wherein, The dynamic information is either physical layer PHY information or media access control (MAC) information.

12. The method according to any one of claims 1 to 11, wherein The terminal is in RRC connection state.

13. A method for monitoring the Physical Downlink Control Channel (PDCCH), wherein, The method is performed by a network device, and the method includes: Send dynamic information to the terminal, the dynamic information being used to dynamically indicate monitoring parameters; The monitoring parameters are used by the terminal to monitor the PDCCH.

14. The method according to claim 13, wherein, The method further includes: A configuration signaling message is sent to the terminal. The configuration signaling message is used to configure at least one group, each group including at least one monitoring parameter, and the at least one group has a corresponding relationship with the search space.

15. The method according to claim 13 or 14, wherein, The dynamic information includes a group identifier, and the monitoring parameters in a group identified by the group identifier are used by the terminal to monitor the PDCCH.

16. The method according to claim 15, wherein, The group identifier of one of the multiple groups indicated by the dynamic information is not present in any of the multiple group identifiers configured in any search space; the monitoring parameter used by the terminal is any one of the following: The monitoring parameters included in the group previously used in any search space; The monitoring parameters included in the group with the largest group identifier among the multiple groups configured in any search space; The monitoring parameters included in the group with the smallest group identifier among the multiple groups configured in any search space; The monitoring parameters included in the default group used by any search space.

17. The method according to any one of claim 13 or 14, wherein, The dynamic information includes parameter values, which indicate a monitoring parameter used by the terminal to monitor the PDCHH.

18. The method according to claim 17, wherein, The monitoring parameters are aggregated levels; The aggregation level and the number of candidates corresponding to the aggregation level are used by the terminal to monitor the PDCCH; The aggregation level is used to indicate the amount of time-frequency resources occupied by the downlink control information (DCI) carried by the PDCCH. The number of candidates corresponding to the aggregation level is used to indicate the number of monitoring areas. The monitoring area refers to the area in which the terminal monitors the DCI carried by the PDCCH. The monitoring area includes the number of time-frequency resources indicated by the aggregation level.

19. The method according to claim 18, wherein, The aggregation level is the largest or smallest aggregation level in the group.

20. The method according to any one of claims 13 to 19, wherein, The PDCCH in the search space configured on all carriers of the terminal is monitored by the terminal; or, The PDCCH in the search space configured on the carrier where the dynamic information is located is monitored by the terminal; The PDCCH in the search space indicated by the dynamic information is monitored by the terminal.

21. The method according to claim 20, wherein, The search space indicated by the dynamic information is the search space indicated by at least one search space identifier associated with the dynamic information; or, The dynamic information includes at least one index, and each index indicates a search space.

22. The method according to any one of claims 13 to 21, wherein, The dynamic information is either physical layer PHY information or media access control (MAC) information.

23. A physical downlink control channel (PDCCH) monitoring device, wherein, The device includes: The transceiver module is used to receive dynamic information sent by network devices, and the dynamic information is used to dynamically indicate monitoring parameters; A processing module is used to monitor the PDCCH using the monitoring parameters.

24. A physical downlink control channel (PDCCH) monitoring device, wherein, The device includes: The transceiver module is used to send dynamic information to the terminal, and the dynamic information is used to dynamically indicate monitoring parameters; The monitoring parameters are used by the terminal to monitor the PDCCH.

25. A terminal, wherein, The terminal is used to perform the method according to any one of claims 1 to 12.

26. A network device, wherein, The network device is used to perform the method according to any one of claims 13 to 22.

27. A communication system comprising a terminal and network equipment, wherein, The terminal is configured to implement the method as described in any one of claims 1 to 12; The network device is configured to implement the method as described in any one of claims 13 to 22.

28. A storage medium storing instructions, wherein, When the instructions are executed on the communication device, the communication device performs the method as described in any one of claims 1 to 12.

29. A storage medium storing instructions, wherein, When the instructions are executed on the communication device, the communication device causes the communication device to perform the method as described in any one of claims 13 to 22.

30. A program product comprising at least one of a program and instructions, wherein, When at least one of the programs or instructions is executed by the communication device, it implements the method as described in any one of claims 1 to 12.

31. A program product comprising at least one of a program and instructions, wherein, When at least one of the programs or instructions is executed by a communication device, it implements the method as described in any one of claims 13 to 22.

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