Method, apparatus and device for monitoring physical downlink control channel

Abstract

This application discloses a method, apparatus, and device for monitoring a physical downlink control channel (PDCCH), belonging to the field of communications. The method includes: monitoring candidate PDCCHs within a first time interval according to a first mapping rule, where the first time interval includes K time slots or K monitoring spans, and K is an integer greater than or equal to 1; the first mapping rule indicates at least one of the following: the mapping priority of a first SS set within the first time interval; a CORESET monitoring rule when N CORESETs overlap resources during PDCCH monitoring, where N is an integer greater than 1; and a mapping rule for the candidate PDCCHs across time slots or across monitoring spans. The first mapping rule provided in this embodiment is applicable to monitoring candidate PDCCHs that satisfy the mapping rule across more than one time slot or one monitoring span. Furthermore, this application embodiment can also provide a CORESET monitoring rule applicable when multiple CORESET resources conflict.

Description

Technical Field

[0001] This application relates to the field of communications, and more particularly to a method, apparatus, and device for monitoring a physical downlink control channel. Background Technology

[0002] In mobile communication systems, when a User Equipment (UE, also known as a terminal device, terminal, etc.) is configured with more than one Search Space (SS) set, the number of candidate Physical Downlink Control Channel (PDCCH) candidates or Control Channel Elements (CCEs) varies between slots because the monitoring occasion for each SS set is configured independently. Therefore, the number of candidate PDCCHs or CCEs that the network-side equipment (such as a base station) is allowed to configure for the UE per slot or per monitoring span exceeds the UE's capacity limit, i.e., overlooking. For each slot or each monitoring span, the UE and the network-side equipment need to agree on specific SS set mapping rules. Based on these rules, the priority of the SS set is determined, and the candidate PDCCHs and CCEs in each slot or each monitoring span are mapped according to the SS set priority.

[0003] However, the existing SS set mapping rules mentioned above are not applicable to scenarios with repeated PDCCH transmissions, nor are they applicable to candidate PDCCH listening over a period of more than one time slot or one listening span. Summary of the Invention

[0004] This application provides a method, apparatus, and device for monitoring the physical downlink control channel, which can solve the problem that existing SS set mapping rules are not applicable to PDCCH repeated transmission scenarios and are not applicable to candidate PDCCH monitoring over more than one time slot or one monitoring span.

[0005] Firstly, a method for monitoring the physical downlink control channel is provided, applied to a terminal device, the method comprising:

[0006] According to the first mapping rule, candidate physical downlink control channels (PDCCHs) are monitored within a first time interval, the first time interval including K time slots or K monitoring spans, where K is an integer greater than or equal to 1; wherein, the first mapping rule is used to indicate at least one of the following: the mapping priority of the first search space set (SS set) within the first time interval; the CORESET monitoring rule when N control resource sets (CORESET) overlap at the time of PDCCH monitoring, where N is an integer greater than 1; the mapping rule of the candidate PDCCH across time slots or across monitoring spans.

[0007] Secondly, a device for monitoring a physical downlink control channel is provided, the device comprising:

[0008] The monitoring module is configured to monitor candidate physical downlink control channels (PDCCHs) within a first time interval according to a first mapping rule. The first time interval includes K time slots or K monitoring spans, where K is an integer greater than or equal to 1. The first mapping rule is used to indicate at least one of the following: the mapping priority of a first search space set (SS set) within the first time interval; the CORESET monitoring rule when N control resource sets (CORESET) overlap at the time of PDCCH monitoring, where N is an integer greater than 1; and the mapping rule for candidate PDCCHs across time slots or across monitoring spans.

[0009] Thirdly, a terminal device is provided, comprising: a memory, a processor, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method described in the first aspect.

[0010] Fourthly, a method for monitoring the physical downlink control channel is provided, applied to network-side equipment, the method comprising:

[0011] According to the first mapping rule, candidate physical downlink control channels (PDCCHs) are transmitted within a first time interval, the first time interval comprising K time slots or K listening spans, where K is an integer greater than or equal to 1; wherein, the first mapping rule is used to indicate at least one of the following: the mapping priority of the first search space set (SS set) within the first time interval; the CORESET listening rule when N control resource sets (CORESET) overlap at the PDCCH listening time, where N is an integer greater than 1; and the mapping rule of the candidate PDCCH across time slots or across listening spans.

[0012] Fifthly, a device for monitoring a physical downlink control channel is provided, the device comprising:

[0013] The transmission module is configured to transmit candidate physical downlink control channels (PDCCHs) within a first time interval according to a first mapping rule. The first time interval includes K time slots or K listening spans, where K is an integer greater than or equal to 1. The first mapping rule is used to indicate at least one of the following: the mapping priority of a first search space set (SS set) within the first time interval; the CORESET listening rule when N control resource sets (CORESET) overlap during PDCCH listening, where N is an integer greater than 1; and the mapping rule for the candidate PDCCH across time slots or across listening spans.

[0014] A sixth aspect provides a network-side device, including: a memory, a processor, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method described in the fourth aspect.

[0015] In a seventh aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or the program or instructions, when executed by a processor, implement the steps of the method described in the fourth aspect.

[0016] Eighthly, a computer program product is provided, the computer program product including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method as described in the fourth aspect, or the program or instructions, when executed by the processor, implement the steps of the method as described in the fourth aspect.

[0017] In a ninth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a terminal device or network-side device program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the fourth aspect.

[0018] In this embodiment, the terminal device can monitor candidate PDCCHs within K time slots or K monitoring spans (i.e., a first time interval) according to a first mapping rule. The first mapping rule specifies the mapping priority of a first SS set within the first time interval. Furthermore, this first mapping rule applies not only to determining the mapping priority of an SS set within a single time slot or monitoring span and to monitoring candidate PDCCHs, but also to determining the mapping priority of SS sets across multiple time slots or multiple monitoring spans and to monitoring candidate PDCCHs. Specifically, the first mapping rule can be used to indicate at least one of the following: the mapping priority of the first SS set within the aforementioned first time interval; the CORESET monitoring rule when multiple (i.e., N) CORESETs overlap during PDCCH monitoring; and the mapping rule for candidate PDCCHs across time slots or monitoring spans. This embodiment provides a mapping rule (or advance definition rule) applicable to SSsets within one or more time slots or one monitoring span, thus enabling monitoring of candidate PDCCHs across more than one time slot or one monitoring span. In addition, this application embodiment can also provide the CORESET monitoring rules applicable when multiple CORESET resources conflict. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This diagram illustrates a block diagram of a wireless communication system to which embodiments of this application may be applied;

[0021] Figure 2 This is a flowchart illustrating a method for monitoring a physical downlink control channel according to an embodiment of this application.

[0022] Figure 3 This is a flowchart illustrating another method for monitoring the physical downlink control channel in an embodiment of this application.

[0023] Figure 4 This is a schematic diagram of the structure of a monitoring device for a physical downlink control channel according to an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the structure of another physical downlink control channel monitoring device in the embodiments of this application;

[0025] Figure 6 This is a schematic diagram of the structure of a communication device according to an embodiment of this application;

[0026] Figure 7This is a schematic diagram of the structure of a terminal device according to an embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the structure of a network-side device in an embodiment of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0029] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. However, the following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description. These technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0031] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or user equipment (UE). The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device, vehicle UE (VUE), pedestrian UE (PUE), etc. Wearable devices include wristbands, headphones, glasses, etc. It should be noted that the specific type of terminal 11 is not limited in this embodiment. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0032] The sublink feedback resource configuration method provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0033] See Figure 2 As shown in the figure, this application embodiment provides a method for monitoring the physical downlink control channel, which is executed by a terminal device. The method includes the following steps:

[0034] Step 201: According to the first mapping rule, listen to the candidate physical downlink control channel (PDCCH) within a first time interval, the first time interval including K time slots or K listening spans, where K is an integer greater than or equal to 1; wherein, the first mapping rule is used to indicate at least one of the following: the mapping priority of the first search space set (SS set) within the first time interval; the CORESET listening rule when N control resource sets (CORESET) overlap at the time of PDCCH listening, where N is an integer greater than 1; the mapping rule of the candidate PDCCH across time slots or across listening spans.

[0035] Optionally, the first SS set described above satisfies at least one of the following: the first SS set is an SS set on the bandwidth portion BWP; the first SS set is an SS set in the search space group on the BWP; the first SS set includes at least one SS set carrying a duplicate PDCCH; the first SS set does not include an SS set carrying a duplicate PDCCH; wherein the duplicate PDCCH is at least a portion of the candidate PDCCHs.

[0036] Optionally, when the first search space set (SS set) is an SS set on the bandwidth part (BWP), it can be understood that the first SS set is part or all of the SS sets on the BWP of the cell, wherein there can be one or more of the first SS sets. That is, for different BWPs of different cells, the first SS set can be one or more different SS sets, or it can be one or more identical SS sets.

[0037] Further optionally, when the first SS set is an SS set in a search space group on the BWP, it can be understood that the first mapping rule is used to indicate the mapping priority of the first SS set in the search space group within the first time interval. In one example, the first mapping rule is used to indicate the mapping priority of all SS sets (i.e., the first SS set) in the first SS group of the BWP within the first time interval.

[0038] Optionally, if the first SS set includes at least one SS set carrying a duplicate PDCCH, then the duplicate PDCCH can also be understood as a duplicate DCI. Furthermore, a duplicate PDCCH or a duplicate DCI can refer to at least one of the following being identical: identical DCI size, identical DCI format, and identical DCI content. Thus, this embodiment of the application, when monitoring candidate PDCCHs, at least considers the impact of duplicate PDCCH transmission scenarios on SS set mapping priorities, etc., so that the above-mentioned first mapping rule can be used to determine the mapping priority of SS sets carrying duplicate PDCCHs, further applicable to scenarios of duplicate PDCCH transmission. Optionally, the above-mentioned mapping priority can also be called the monitoring priority.

[0039] Optionally, the number of candidate PDCCHs can be one or more.

[0040] In this embodiment, the terminal device can monitor candidate PDCCHs within K time slots or K monitoring spans (i.e., a first time interval) according to a first mapping rule. This first mapping rule specifies the mapping priority of a first SS set within the first time interval. Furthermore, this first mapping rule applies not only to determining the mapping priority of an SS set and monitoring candidate PDCCHs within a single time slot or monitoring span, but also to determining the mapping priority of SS sets and monitoring candidate PDCCHs across multiple time slots or multiple monitoring spans. Specifically, the first mapping rule can be used to indicate at least one of the following: the mapping priority of the first SS set within the aforementioned first time interval; the CORESET monitoring rule when multiple (i.e., N) CORESETs overlap resources during PDCCH monitoring; and the mapping rule for candidate PDCCHs across time slots or monitoring spans. This application provides an SS set mapping rule (or advance constraint rule) applicable to SS sets within one or more time slots or listening spans. This rule is applicable to candidate PDCCH listening over more than one time slot or one listening span, and is suitable for scenarios involving repeated PDCCH transmissions when the first SS set includes at least one SS set carrying duplicate PDCCHs. Furthermore, this embodiment also provides listening rules for CORESETs when multiple CORESET resources conflict.

[0041] Optionally, the candidate PDCCHs within the first time interval may include duplicate candidate PDCCHs or may not include duplicate candidate PDCCHs.

[0042] It should be noted that each candidate PDCCH is carried by its corresponding SS set. The candidate PDCCHs within each of the aforementioned first time intervals can be different or the same. Further optionally, therefore, within different first time intervals, the candidate PDCCHs may or may not contain duplicate PDCCHs. Further optionally, if the candidate PDCCHs within the aforementioned first time intervals contain duplicate candidate PDCCHs, the duplicate candidate PDCCHs may refer to repeatedly sent or repeatedly transmitted candidate PDCCHs. Thus, when monitoring candidate PDCCHs, this embodiment of the application at least considers the impact of PDCCH retransmission scenarios on SS set mapping priorities, etc., so that the aforementioned first mapping rule is further applicable to scenarios of PDCCH retransmission.

[0043] Alternatively, the value of K can be the maximum number of times the PDCCH is repeated across all time slots or across all listening spans of the BWP of the cell.

[0044] Further optionally, the SS set in which the aforementioned candidate PDCCHs are located includes, but is not limited to, a UE-specific search space set (USS set) and / or a common search space set (CSS set). The CSS set can be a Type 3 CSS set.

[0045] Optionally, the PDCCH monitoring method in this application embodiment may further include the following:

[0046] During the first time interval, joint detection and / or independent detection are performed on the candidate PDCCHs. Joint detection is applicable when there are multiple candidate PDCCHs to be monitored.

[0047] For example, if the candidate PDCCH includes a repeated candidate PDCCH that repeats within a first time interval, and the first time interval consists of multiple time slots or multiple listening spans, then joint detection can be performed on the repeated candidate PDCCH within the first time interval.

[0048] Optionally, the N CORESETs may have the same or different quasi-co-location (QCL) type D attribute.

[0049] Optionally, the PDCCH monitoring method in this application embodiment may further include the following:

[0050] Before listening to the candidate physical downlink control channel (PDCCH) within a first time interval according to the first mapping rule, an indication information is reported, which is used to indicate whether the first mapping rule is supported.

[0051] In this embodiment, before detecting (or monitoring) candidate PDCCHs within a first time interval according to the first mapping rule, the terminal device may pre-report whether it supports the first mapping rule, so that the network-side device can configure the SS set according to the specific situation reported by the terminal device. In one example, if the terminal device reports that it supports the first mapping rule within the first time interval, the network-side device can configure the SS set according to the first mapping rule based on the reported content, further enabling the terminal device to detect candidate PDCCHs within the first time interval according to the first mapping rule.

[0052] Further optionally, the above indication information is used to indicate whether the first mapping rule is supported when the first time interval is greater than or equal to two time slots or two listening spans.

[0053] Optionally, in the PDCCH monitoring method of this application embodiment, at least one of the following is configured by the network-side device or agreed upon by the protocol:

[0054] (1) The maximum number of candidate PDCCHs to be monitored within the first time interval. That is, the maximum number of candidate PDCCHs to be monitored within a time slot or a monitoring span can be configured by the network-side device or agreed upon by the protocol, or the maximum number of candidate PDCCHs to be monitored within multiple time slots or multiple monitoring spans can be configured by the network-side device or agreed upon by the protocol.

[0055] (2) The maximum number of non-overlapping Control Channel Elements (CCEs) within the first time interval. That is, the maximum number of non-overlapping CCEs within a time slot or a listening span can be configured by the network-side device or agreed upon by the protocol, or the maximum number of non-overlapping CCEs within multiple time slots or multiple listening spans can be configured by the network-side device or agreed upon by the protocol.

[0056] Optionally, in the PDCCH monitoring method of this application embodiment, when the first mapping rule indicates the mapping priority of the first SSset within the first time interval, the mapping priority of the first SSset within the first time interval is determined by at least one of the following:

[0057] (1) The type of the first SS set. That is, the mapping priority of the SS set can be determined according to the type of the SS set, wherein the type of the first SS set includes CSS set or USS set. In one example, the mapping priority of CSS set can be higher than that of USS set; in another example, the mapping priority of CSS set can be lower than that of USS set.

[0058] (2) The index value of the first SS set. That is, the mapping priority of the SS set can be determined based on the size of the index value of the SS set. In one example, the larger the index value of the SS set, the lower the mapping priority of the SS set. In another example, the smaller the index value of the SS set, the lower the mapping priority of the SS set.

[0059] (3) The number of repetitions of the first SS set. That is, the mapping priority of the SS set can be determined based on the number of repetitions of the SS set. In one example, the greater the number of repetitions of the SS set, the higher the mapping priority of the SS set.

[0060] Optionally, the number of repetitions of the first SS set can take different values ​​in scenarios where repetition occurs in different units, including but not limited to the following cases:

[0061] (a) When the first SS set is repeated in units of SS set, the number of times the first SS set is repeated is equal to the number of times the first SS set is repeated. That is, when the first SS set is repeated according to SS set, the number of times the first SS set is repeated is equal to the number of times the first SS set is repeated.

[0062] (b) When the first SS set is repeated at aggregation level (AL), the number of repetitions of the first SS set is: the largest AL repetition among all AL repetitions configured in the first SS set, or the sum of all AL repetitions configured in the first SS set. In other words, when the first SS set is repeated according to aggregation level (AL), the number of repetitions of the first SS set is: the largest AL repetition among all AL repetitions configured in the first SS set, or the sum of all AL repetitions configured in the first SS set.

[0063] (c) When the first SS set repeats according to the DCI format, the number of repetitions of the first SS set is: the maximum number of repetitions of the DCI format configured in the first SS set, or the sum of the number of repetitions of all DCI formats configured in the first SS set. In other words, when the first SS set repeats according to the DCI format, the number of repetitions of the first SS set is: the maximum number of repetitions of the DCI format configured in the first SS set, or the sum of the number of repetitions of all DCI formats configured in the first SS set.

[0064] Optionally, there may be a mapping relationship between the number of repetitions of the first SS set and its index value. Specifically, the greater the number of repetitions of the first SS set, the greater its index value; or, the smaller the number of repetitions of the first SS set, the greater its index value. Optionally, if multiple SS sets in the first SS set have the same number of repetitions, the mapping order of their index values ​​may be random.

[0065] (4) The number of times the first SS set has been repeated. That is, the mapping priority of the SS set can be determined based on the number of times the SS set has been repeated. In one example, the more times the SS set has been repeated, the lower its mapping priority.

[0066] (5) Network-side device configuration, wherein the first SS set is scrambled by a specific Radio Network Temporary Identifier (RNTI) or contains a specific Downlink Control Information (DCI) format. That is, the mapping priority of the first SS set scrambled by a specific RNTI or containing a specific DCI format can be determined through network-side configuration. In one example, when the first SS set is scrambled by a Paging RNTI (P-RNTI), its mapping priority can be configured to be the lowest by the network-side device.

[0067] (6) The protocol stipulates that the first SS set is scrambled by a specific Radio Network Temporary Identifier (RNTI) or contains a specific Downlink Control Information (DCI) format. In other words, the mapping priority of the first SS set scrambled by a specific RNTI or containing a specific DCI format can be determined by the protocol. In one example, when the first SS set is scrambled by a P-RNTI, its mapping priority can be determined by the protocol to be the lowest.

[0068] Further optionally, when the mapping priority of the SS set is determined by multiple conditions among the above conditions (1), (2), (3), (4), (5), (6), there can also be a priority order among conditions (1), (2), (3), (4), (5), (6). For example, the priority of these conditions can be (1) > (2) > (3) > (4) > (5) > (6), without specific limitation here.

[0069] In one example, the mapping priority of the first SS set within the first time interval is determined by multiple mapping conditions, including the type of the first SS set, the index value of the first SS set, and the number of repetitions of the first SS set. These multiple mapping conditions can be: CSS sets have a higher mapping priority than USS sets among the SS set types; the smaller the index value of an SS set, the higher its mapping priority; and the greater the number of repetitions of an SS set, the higher its mapping priority. The priority order among these multiple mapping conditions is: (1) > (3) > (2). Consider the following SS sets: USS set1, repetition count 2; USS set2, repetition count 3; USS set3, repetition count 2; CSS set1, repetition count 2; CSS set2, repetition count 1. The SS set priority order is uniquely determined according to these three conditions as: CSS set1 > CSS set2 > USS set2 > USS set1 > USS set3.

[0070] In another example, the mapping priority of the first SS set within the first time interval is determined by multiple mapping conditions, including the type of the first SS set, the index value of the first SS set, and the number of completed repetitions of the first SS set. These multiple mapping conditions can be: CSS set has a higher mapping priority than USS set among the agreed SS set types; the smaller the index value of the agreed SS set, the higher its priority; and the larger the number of completed repetitions of the agreed SS set, the lower its priority. And (1) > (4) > (2). Consider the following SS sets: USS set1, completed repetitions 2; USS set2, completed repetitions 3; USS set3, completed repetitions 2; CSS set1, completed repetitions 2; CSS set2, completed repetitions 1. Then, the SS set priority order is uniquely determined according to the above three conditions as: CSS set2 > CSS set1 > USS set1 > USS set2 > USS set2.

[0071] In another example, the mapping priority of the first SS set within the first time interval is determined by multiple mapping conditions, including the type of the first SS set, the index value of the first SS set, the number of repetitions of the first SS set, and the number of completed repetitions of the first SS set. These multiple mapping conditions can be: CSS set has a higher mapping priority than USS set in the SS set type; the smaller the index value of the SS set, the higher its priority; and the larger the number of repetitions and the number of completed repetitions of the SS set, the higher its priority. And (1) > (3) > (4) > (2). Consider the following SS sets: USS set1, 3 repetitions, 2 completed repetitions; USS set2, 3 repetitions, 3 completed repetitions; USS set3, 2 repetitions, 2 completed repetitions; CSS set1, 4 repetitions, 2 completed repetitions; CSS set2, 3 repetitions, 1 completed repetition. The SS set priority order is uniquely determined according to the above three conditions as: CSS set1 > CSS set2 > USS set2 > USS set1 > USS set3.

[0072] It is understood that when determining the mapping priority of the first SS set within the first time interval, at least the number of repetitions of the first SS set and / or the number of completed repetitions of the first SS set should be considered, so that the mapping rule indicating the above mapping priority, i.e. the first mapping rule, can be applied to the scenario of PDCCH repeated transmission (PDCCH enhancement).

[0073] It should be noted that the agreement in the embodiments of this application may refer to a pre-agreed, pre-defined, or pre-specified agreement.

[0074] Optionally, the PDCCH monitoring method in this application embodiment may further include one of the following:

[0075] (1) Based on the number of times the first SS set has been repeated in the first M time slots of the K time slots, adjust the mapping priority of the first SS set in the (M+1)th time slot of the K time slots.

[0076] (2) Based on the number of times the first SS set has been repeated in the first M listening spans of the K listening spans, adjust the mapping priority of the first SS set in the (M+1)th listening span of the K listening spans.

[0077] In this embodiment of the application, during the process of monitoring candidate PDCCHs within K time slots or K monitoring spans according to the aforementioned first mapping rule, the mapping priority of subsequent time slots or monitoring spans within the K time slots or K monitoring spans can be dynamically adjusted based on the number of completed repetitions of the SS set within the first M time slots of the K time slots or M monitoring spans of the K monitoring spans. For example, the mapping priority of the (M+1)th time slot or the (M+1)th monitoring span. That is, when the first time interval includes multiple time slots or multiple monitoring spans, the mapping priority of some time slots or monitoring spans within the first time interval can be dynamically adjusted.

[0078] Where M is an integer less than K, and M+1 is an integer less than or equal to K.

[0079] Optionally, in the PDCCH monitoring method of this application embodiment, the above-mentioned CORESET monitoring rules include:

[0080] At the PDCCH listening time, the first CORESET among the N CORESETs is listened to. The first CORESET is associated with the second SS set. The second SS set is the SS set with the highest mapping priority determined in the first SS set based on the first mapping rule.

[0081] The overbooking rules (i.e. mapping rules) applicable to the PDCCH repetition scheme of this application will be described below with specific examples.

[0082] In a specific example, the protocol stipulates the following mapping priority conditions: (I) the mapping priority of CSS set is higher than that of USS set; (II) the smaller the SS set index, the higher the mapping priority; (III) the higher the repetition number of the PDCCHcandidate mentioned above, the higher the priority of SS set.

[0083] Optionally, in network configuration CSS set 2, PDCCHcandidates with AL=4 are repeatedly transmitted, with a repetition count of 2; in CSS set 1, repeated transmission of PDCCHcandidates is not configured; in USS set 1, all PDCCHcandidates are repeatedly transmitted, with a repetition count of 3; in USS set 3, DCI format 1-1 and DCI format 0-1 are repeatedly transmitted, with a repetition count of 3. Repeated transmission of PDCCHcandidates is not configured in USS set 2. Furthermore, K=1, and the first time interval is one time slot.

[0084] According to the mapping rules in this application embodiment, the order in which the UE detects the search space set within a time slot is as follows:

[0085] Option 1: CSS set2 > CSS set1 > USS set1 > USS set3 > USS set2 (using conditions I, II, and III);

[0086] Option 2: CSS set1 > CSS set2 > USS set1 > USS set2 > USS set3 (using conditions I and II);

[0087] Option 3: USS set 1 > USS set 3 > CSS set 2 > CSS set 1 > USS set 2 (using condition III).

[0088] In another specific example, the protocol stipulates the following mapping priority conditions: (i) the mapping priority of CSS set is higher than that of USS set; (ii) the smaller the SS set index, the higher the mapping priority; (iii) the higher the repetition number of the PDCCHcandidate mentioned above, the higher the priority of SS set; (iv) the number of times the SS set has been detected.

[0089] Optionally, the priority of the current SS set can be determined based on the number of SS sets detected before the current time slot or monitoring span. For example, the network configuration may involve repeated transmission of all PDCCHcandidates in USS set1, with a repetition count of 3, occurring in 3 time slots. The priority of USS set1 in the first time slot of transmission is determined according to conditions i, ii, and iii above. In the next repeated transmission time slot, the priority of USS set1 shifts one position forward (decreases) or one position backward (increases), until the priority of USS set1 is reduced to the lowest or increased to the highest, or until all 3 transmissions have been completed.

[0090] See Figure 3 As shown in the figure, this application embodiment provides a method for monitoring the physical downlink control channel, which is executed by a network-side device. The method includes the following steps:

[0091] Step 301: According to the first mapping rule, transmit candidate physical downlink control channels (PDCCHs) within a first time interval, the first time interval including K time slots or K listening spans, where K is an integer greater than or equal to 1; wherein, the first mapping rule is used to indicate at least one of the following: the mapping priority of the first search space set (SS set) within the first time interval; the CORESET listening rule when N control resource sets (CORESET) overlap at the PDCCH listening time, where N is an integer greater than 1; the mapping rule of the candidate PDCCH across time slots or across listening spans.

[0092] Optionally, the first SS set described above satisfies at least one of the following: the first SS set is an SS set on the bandwidth portion BWP; the first SS set is an SS set in the search space group on the BWP; the first SS set includes at least one SS set carrying a duplicate PDCCH; the first SS set does not include an SS set carrying a duplicate PDCCH; wherein the duplicate PDCCH is at least a portion of the candidate PDCCHs.

[0093] Further optionally, when the first SS set mentioned above is an SS set on a BWP, it can be understood that the first SS set is part or all of the SS sets on the BWP of the cell, wherein there can be one or more of the aforementioned first SS sets. That is to say, for different BWPs of different cells, the first SS set can be one or more different SS sets, or it can be one or more identical SS sets.

[0094] Further optionally, when the first SS set is an SS set in a search space group on the BWP, it can be understood that the first mapping rule is used to indicate the mapping priority of the first SS set in the search space group within the first time interval. In one example, the first mapping rule is used to indicate the mapping priority of all SS sets (i.e., the first SS set) in the first SS group of the BWP within the first time interval.

[0095] Optionally, if the first SS set includes at least one SS set carrying a duplicate PDCCH, then the duplicate PDCCH can also be understood as a duplicate DCI. Furthermore, a duplicate PDCCH or a duplicate DCI can refer to at least one of the following being identical: identical DCI size, identical DCI format, and identical DCI content. Thus, this embodiment of the application, when monitoring candidate PDCCHs, at least considers the impact of duplicate PDCCH transmission scenarios on SS set mapping priorities, etc., so that the above-mentioned first mapping rule can be used to determine the mapping priority of SS sets carrying duplicate PDCCHs, further applicable to scenarios of duplicate PDCCH transmission. Optionally, the above-mentioned mapping priority can also be called the monitoring priority.

[0096] Optionally, the number of candidate PDCCHs can be one or more.

[0097] In this embodiment, the network-side device can transmit candidate PDCCHs within K time slots or K listening spans (i.e., a first time interval) according to a first mapping rule. The first mapping rule specifies the mapping priority of a first SS set within the first time interval. Furthermore, the first mapping rule applies not only to determining the mapping priority of an SS set and listening to candidate PDCCHs within a single time slot or listening span, but also to determining the mapping priority of SS sets and listening to candidate PDCCHs across multiple time slots or multiple listening spans. Specifically, the first mapping rule can be used to indicate at least one of the following: the mapping priority of the first SS set within the aforementioned first time interval; the CORESET listening rule when multiple (i.e., N) CORESETs overlap resources during PDCCH listening; and the mapping rule for the candidate PDCCHs across time slots or listening spans. This application provides an embodiment of an SSset mapping rule (or advance constraint rule) applicable to SSsets of one or more time slots or one listening span, which is applicable to candidate PDCCH listening over more than one time slot or one listening span. It is also applicable to scenarios involving repeated PDCCH transmissions when the first SSset contains at least one SSset carrying a duplicate PDCCH. Furthermore, this embodiment also provides a listening rule for CORESETs applicable when multiple CORESET resources conflict.

[0098] Optionally, the candidate PDCCHs within the first time interval may include duplicate candidate PDCCHs or may not include duplicate candidate PDCCHs.

[0099] It should be noted that each candidate PDCCH is carried by its corresponding SS set. The candidate PDCCHs within each of the aforementioned first time intervals can be different or the same. Further optionally, therefore, within different first time intervals, the candidate PDCCHs may or may not contain duplicate PDCCHs. Further optionally, if the candidate PDCCHs within the aforementioned first time intervals contain duplicate candidate PDCCHs, the duplicate candidate PDCCHs may refer to repeatedly sent or repeatedly transmitted candidate PDCCHs. Thus, when monitoring candidate PDCCHs, this embodiment of the application at least considers the impact of PDCCH retransmission scenarios on SS set mapping priorities, etc., so that the aforementioned first mapping rule is further applicable to scenarios of PDCCH retransmission.

[0100] Alternatively, the value of K can be the maximum number of times the PDCCH is repeated across all time slots or across all listening spans of the BWP of the cell.

[0101] Further optionally, the SS set containing the aforementioned duplicate candidate PDCCHs includes, but is not limited to, the terminal-specific search space set (USS set) and / or the first type of public search space set (CSS set). The CSS set can be a Type 3 CSS set.

[0102] Optionally, the N CORESETs may have the same or different QCL type D attributes.

[0103] Optionally, the PDCCH monitoring method in this application embodiment may further include at least one of the following:

[0104] (1) Configure the maximum number of candidate PDCCHs to be monitored within the first time interval. That is, the network-side device can configure the maximum number of candidate PDCCHs to be monitored within one time slot or one monitoring span, or the network-side device can configure the maximum number of candidate PDCCHs to be monitored within multiple time slots or multiple monitoring spans.

[0105] (2) Configure the maximum number of non-overlapping Control Channel Units (CCEs) within the first time interval. That is, the network-side device can configure the maximum number of non-overlapping CCEs within one time slot or one listening span, or the network-side device can configure the maximum number of non-overlapping CCEs within multiple time slots or multiple listening spans.

[0106] Optionally, in the PDCCH monitoring method of this application embodiment, when the first mapping rule indicates the mapping priority of the first SSset within the first time interval, the mapping priority of the first SSset within the first time interval is determined by at least one of the following:

[0107] (1) The type of the first SS set. That is, the mapping priority of the SS set can be determined according to the type of the SS set, wherein the type of the first SS set includes CSS set or USS set. In one example, the mapping priority of CSS set can be higher than that of USS set; in another example, the mapping priority of CSS set can be lower than that of USS set.

[0108] (2) The index value of the first SS set. That is, the mapping priority of the SS set can be determined based on the size of the index value of the SS set. In one example, the larger the index value of the SS set, the lower the mapping priority of the SS set. In another example, the smaller the index value of the SS set, the lower the mapping priority of the SS set.

[0109] (3) The number of repetitions of the first SS set. That is, the mapping priority of the SS set can be determined based on the number of repetitions of the SS set. In one example, the greater the number of repetitions of the SS set, the higher the mapping priority of the SS set.

[0110] Optionally, the number of repetitions of the first SS set can take different values ​​in scenarios where repetition occurs in different units, including but not limited to the following cases:

[0111] (a) When the first SS set is repeated in units of SS set, the number of times the first SS set is repeated is equal to the number of times the first SS set is repeated. That is, when the first SS set is repeated according to SS set, the number of times the first SS set is repeated is equal to the number of times the first SS set is repeated.

[0112] (b) When the first SS set is repeated at aggregation level (AL), the number of repetitions of the first SS set is: the largest AL repetition among all AL repetitions configured in the first SS set, or the sum of all AL repetitions configured in the first SS set. In other words, when the first SS set is repeated according to aggregation level (AL), the number of repetitions of the first SS set is: the largest AL repetition among all AL repetitions configured in the first SS set, or the sum of all AL repetitions configured in the first SS set.

[0113] (c) When the first SS set repeats according to the DCI format, the number of repetitions of the first SS set is: the maximum number of repetitions of the DCI format configured in the first SS set, or the sum of the number of repetitions of all DCI formats configured in the first SS set. In other words, when the first SS set repeats according to the DCI format, the number of repetitions of the first SS set is: the maximum number of repetitions of the DCI format configured in the first SS set, or the sum of the number of repetitions of all DCI formats configured in the first SS set.

[0114] Optionally, there may be a mapping relationship between the number of repetitions of the first SS set and its index value. Specifically, the greater the number of repetitions of the first SS set, the greater its index value; or, the smaller the number of repetitions of the first SS set, the greater its index value. Optionally, if multiple SS sets in the first SS set have the same number of repetitions, the mapping order of their index values ​​may be random.

[0115] (4) The number of times the first SS set has been repeated. That is, the mapping priority of the SS set can be determined based on the number of times the SS set has been repeated. In one example, the more times the SS set has been repeated, the lower its mapping priority.

[0116] (5) Network-side device configuration, wherein the first SS set is scrambled by a specific Radio Network Temporary Identifier (RNTI) or contains a specific Downlink Control Information (DCI) format. In other words, the mapping priority of the first SS set scrambled by a specific RNTI or containing a specific DCI format can be determined through network-side configuration. In one example, when the first SS set is scrambled by a P-RNTI, its mapping priority can be configured to be the lowest by the network-side device.

[0117] (6) The protocol stipulates that the first SS set is scrambled by a specific Radio Network Temporary Identifier (RNTI) or contains a specific Downlink Control Information (DCI) format. In other words, the mapping priority of the first SS set scrambled by a specific RNTI or containing a specific DCI format can be determined by the protocol. In one example, when the first SS set is scrambled by a P-RNTI, its mapping priority can be determined by the protocol to be the lowest.

[0118] Further optionally, when the mapping priority of the SS set is determined by multiple conditions among the above conditions (1), (2), (3), (4), (5), (6), there can also be a priority order among conditions (1), (2), (3), (4), (5), (6). For example, the priority of these conditions can be (1) > (2) > (3) > (4) > (5) > (6), without specific limitation here.

[0119] In one example, the mapping priority of the first SS set within the first time interval is determined by multiple mapping conditions, including the type of the first SS set, the index value of the first SS set, and the number of repetitions of the first SS set. These multiple mapping conditions can be: CSS sets have a higher mapping priority than USS sets among the SS set types; the smaller the index value of an SS set, the higher its mapping priority; and the greater the number of repetitions of an SS set, the higher its mapping priority. The priority order among these multiple mapping conditions is: (1) > (3) > (2). Consider the following SS sets: USS set1, repetition count 2; USS set2, repetition count 3; USS set3, repetition count 2; CSS set1, repetition count 2; CSS set2, repetition count 1. The SS set priority order is uniquely determined according to these three conditions as: CSS set1 > CSS set2 > USS set2 > USS set1 > USS set3.

[0120] In another example, the mapping priority of the first SS set within the first time interval is determined by multiple mapping conditions, including the type of the first SS set, the index value of the first SS set, and the number of completed repetitions of the first SS set. These multiple mapping conditions can be: CSS set has a higher mapping priority than USS set among the agreed SS set types; the smaller the index value of the agreed SS set, the higher its priority; and the larger the number of completed repetitions of the agreed SS set, the lower its priority. And (1) > (4) > (2). Consider the following SS sets: USS set1, completed repetitions 2; USS set2, completed repetitions 3; USS set3, completed repetitions 2; CSS set1, completed repetitions 2; CSS set2, completed repetitions 1. Then, the SS set priority order is uniquely determined according to the above three conditions as: CSS set2 > CSS set1 > USS set1 > USS set2 > USS set2.

[0121] In another example, the mapping priority of the first SS set within the first time interval is determined by multiple mapping conditions, including the type of the first SS set, the index value of the first SS set, the number of repetitions of the first SS set, and the number of completed repetitions of the first SS set. These multiple mapping conditions can be: CSS set has a higher mapping priority than USS set in the SS set type; the smaller the index value of the SS set, the higher its priority; and the larger the number of repetitions and the number of completed repetitions of the SS set, the higher its priority. And (1) > (3) > (4) > (2). Consider the following SS sets: USS set1, 3 repetitions, 2 completed repetitions; USS set2, 3 repetitions, 3 completed repetitions; USS set3, 2 repetitions, 2 completed repetitions; CSS set1, 4 repetitions, 2 completed repetitions; CSS set2, 3 repetitions, 1 completed repetition. The SS set priority order is uniquely determined according to the above three conditions as: CSS set1 > CSS set2 > USS set2 > USS set1 > USS set3.

[0122] It is understood that when determining the mapping priority of the first SS set within the first time interval, at least the number of repetitions of the first SS set and / or the number of completed repetitions of the first SS set should be considered, so that the mapping rule indicating the above mapping priority, i.e. the first mapping rule, can be applied to the scenario of PDCCH repeated transmission (PDCCH enhancement).

[0123] It should be noted that the agreement in the embodiments of this application may refer to a pre-agreed, pre-defined, or pre-specified agreement.

[0124] Optionally, in the PDCCH monitoring method of this application embodiment, the above-mentioned CORESET monitoring rules include:

[0125] At the PDCCH listening time, the first CORESET among the N CORESETs is listened to. The first CORESET is associated with the second SS set. The second SS set is the SS set with the highest mapping priority determined in the first SS set based on the first mapping rule.

[0126] Optionally, the PDCCH monitoring method in this application embodiment may further include the following:

[0127] Before transmitting the candidate physical downlink control channel (PDCCH) within a first time interval according to the first mapping rule, the terminal device reports indication information, which is used to indicate whether the terminal device supports the first mapping rule.

[0128] In this embodiment of the application, before transmitting the candidate physical downlink control channel (PDCCH) within the first time interval according to the first mapping rule, the terminal device can be informed in advance whether it supports the first mapping rule, so as to configure the SS set according to the specific situation reported by the terminal device.

[0129] Further optionally, the indication information is used to indicate whether the terminal device supports the first mapping rule when the first time interval is greater than or equal to two time slots or two listening spans.

[0130] It should be noted that the physical downlink control channel monitoring method executed by the terminal device provided in this application embodiment can be executed by a physical downlink control channel monitoring device, or by a control module in the physical downlink control channel monitoring device for executing the physical downlink control channel monitoring method. This application embodiment uses the execution of the physical downlink control channel monitoring method by a physical downlink control channel monitoring device as an example to illustrate the physical downlink control channel monitoring device provided in this application embodiment.

[0131] See Figure 4 As shown, this application embodiment provides a physical downlink control channel monitoring device 400, which includes:

[0132] The monitoring module 401 is configured to monitor candidate physical downlink control channels (PDCCHs) within a first time interval according to a first mapping rule. The first time interval includes K time slots or K monitoring spans, where K is an integer greater than or equal to 1. The first mapping rule is used to indicate at least one of the following: the mapping priority of a first search space set (SS set) within the first time interval; the CORESET monitoring rule when N control resource sets (CORESET) overlap at the time of PDCCH monitoring, where N is an integer greater than 1; and the mapping rule for candidate PDCCHs across time slots or across monitoring spans.

[0133] Optionally, in the physical downlink control channel monitoring device 400 of this application embodiment, the aforementioned first SS set satisfies at least one of the following:

[0134] The first SS set is an SS set on the bandwidth portion BWP; the first SS set is an SS set in the search space group on the BWP; the first SS set includes at least one SS set carrying a duplicate PDCCH; the first SS set does not include an SS set carrying a duplicate PDCCH; wherein the duplicate PDCCH is at least a portion of the candidate PDCCHs.

[0135] Optionally, in the physical downlink control channel monitoring device 400 of this application embodiment, at least one of the following is configured by the network-side device or agreed upon by the protocol:

[0136] The maximum number of candidate PDCCHs to be monitored within the first time interval; the maximum number of non-overlapping Control Channel Elements (CCEs) within the first time interval.

[0137] Optionally, in the physical downlink control channel monitoring device 400 of this application embodiment, the mapping priority of the first SS set within the first time interval is determined by at least one of the following:

[0138] The type of the first SS set; the index value of the first SS set; the number of repetitions of the first SS set; the number of completed repetitions of the first SS set; network-side device configuration or protocol agreement, wherein the first SS set is scrambled by a specific Radio Network Temporary Identifier (RNTI) or contains a specific Downlink Control Information (DCI) format.

[0139] Optionally, in the physical downlink control channel monitoring device 400 of this application embodiment, when the first SSset is repeated according to SS set, the number of repetitions of the first SS set is equal to the number of repetitions of the first SS set; when the first SS set is repeated according to aggregation level AL, the number of repetitions of the first SS set is: the largest number of AL repetitions among all ALs configured in the first SS set, or the sum of the number of repetitions of all ALs configured in the first SS set; when the first SS set is repeated according to DCI format, the number of repetitions of the first SS set is: the largest number of DCI format repetitions among all DCI format repetitions configured in the first SS set, or the sum of the number of repetitions of all DCI formats configured in the first SS set.

[0140] Optionally, in the physical downlink control channel monitoring device 400 of this application embodiment, if the number of repetitions of the first SSset is greater, the index value of the first SSset is greater; or if the number of repetitions of the first SSset is smaller, the index value of the first SSset is greater.

[0141] Optionally, the physical downlink control channel monitoring device 400 in this embodiment may further include a processing module, which is used to perform one of the following operations:

[0142] Based on the number of times the first SS set has been repeated in the first M time slots of the K time slots, adjust the mapping priority of the first SS set in the (M+1)th time slot of the K time slots; based on the number of times the first SS set has been repeated in the first M listening spans of the K listening spans, adjust the mapping priority of the first SS set in the (M+1)th listening span of the K listening spans.

[0143] Optionally, in the physical downlink control channel monitoring device 400 of this application embodiment, the above-mentioned N CORESETs have the same or different quasi-co-located QCL type D attributes.

[0144] Optionally, in the physical downlink control channel monitoring device 400 of this application embodiment, the above-mentioned CORESET monitoring rules include:

[0145] At the PDCCH listening time, the first CORESET among the N CORESETs is listened to. The first CORESET is associated with the second SS set. The second SS set is the SS set with the highest mapping priority determined in the first SS set based on the first mapping rule.

[0146] Optionally, the physical downlink control channel monitoring device 400 in this embodiment may further include:

[0147] The reporting module is used to report indication information before listening to the candidate physical downlink control channel (PDCCH) within a first time interval according to the first mapping rule. The indication information is used to indicate whether the terminal device supports the first mapping rule.

[0148] Optionally, in the physical downlink control channel monitoring device 400 of this application embodiment, the above-mentioned indication information is used to indicate whether the terminal device supports the first mapping rule when the first time interval is greater than or equal to two time slots or two monitoring spans.

[0149] Optionally, in the physical downlink control channel monitoring device 400 of this application embodiment, the above-mentioned candidate PDCCH includes duplicate candidate PDCCH.

[0150] Optionally, the physical downlink control channel monitoring device 400 in this embodiment may further include:

[0151] The detection module is used to perform joint detection and / or independent detection on the candidate PDCCH within the first time interval.

[0152] Optionally, in the physical downlink control channel monitoring device 400 of this application embodiment, the SS set where the above-mentioned candidate PDCCH is located includes the terminal-specific search space set USS set and / or the public search space set CSS set.

[0153] In this embodiment, the terminal device can monitor candidate PDCCHs within K time slots or K monitoring spans (i.e., a first time interval) according to a first mapping rule. This first mapping rule specifies the mapping priority of a first SS set within the first time interval. Furthermore, this first mapping rule applies not only to determining the mapping priority of an SS set and monitoring candidate PDCCHs within a single time slot or monitoring span, but also to determining the mapping priority of SS sets and monitoring candidate PDCCHs across multiple time slots or multiple monitoring spans. Specifically, the first mapping rule can be used to indicate at least one of the following: the mapping priority of the first SS set within the aforementioned first time interval; the CORESET monitoring rule when multiple (i.e., N) CORESETs overlap resources during PDCCH monitoring; and the mapping rule for candidate PDCCHs across time slots or monitoring spans. This application provides an embodiment of an SSset mapping rule (or advance constraint rule) applicable to SSsets of one or more time slots or one listening span, which is applicable to candidate PDCCH listening over more than one time slot or one listening span. It is also applicable to scenarios involving repeated PDCCH transmissions when the first SSset contains at least one SSset carrying a duplicate PDCCH. Furthermore, this embodiment also provides a listening rule for CORESETs applicable when multiple CORESET resources conflict.

[0154] The device for monitoring the physical downlink control channel in this application embodiment can be a device, or a component, integrated circuit, or chip in a terminal device. This device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminal 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not impose specific limitations.

[0155] The physical downlink control channel monitoring device in this application embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit the specific operating system used.

[0156] The physical downlink control channel monitoring device provided in this application embodiment can achieve... Figure 2 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0157] It should be noted that the physical downlink control channel monitoring method executed by a network-side device provided in this application embodiment can be implemented by a physical downlink control channel monitoring device, or by a control module within that device for executing the physical downlink control channel monitoring method. This application embodiment uses the execution of the physical downlink control channel monitoring method by a physical downlink control channel monitoring device as an example to illustrate the physical downlink control channel monitoring device provided in this application embodiment.

[0158] See Figure 5 As shown, this application embodiment provides a physical downlink control channel monitoring device 500, which includes:

[0159] The transmission module 501 is configured to transmit candidate physical downlink control channels (PDCCHs) within a first time interval according to a first mapping rule. The first time interval includes K time slots or K listening spans, where K is an integer greater than or equal to 1. The first mapping rule is used to indicate at least one of the following: the mapping priority of a first search space set (SS set) within the first time interval; the CORESET listening rule when N control resource sets (CORESET) overlap at the time of PDCCH listening, where N is an integer greater than 1; and the mapping rule of the candidate PDCCH across time slots or across listening spans.

[0160] Optionally, in the physical downlink control channel monitoring device 500 of this application embodiment, the aforementioned first SS set satisfies at least one of the following:

[0161] The first SS set is an SS set on the bandwidth portion BWP; the first SS set is an SS set in the search space group on the BWP; the first SS set includes at least one SS set carrying a duplicate PDCCH; the first SS set does not include an SS set carrying a duplicate PDCCH; wherein the duplicate PDCCH is at least a portion of the candidate PDCCHs.

[0162] Optionally, the physical downlink control channel monitoring device 500 in this embodiment may further include a configuration module, the configuration module being used for:

[0163] Configure the maximum number of candidate PDCCHs to be monitored within the first time interval; and / or configure the maximum number of non-overlapping Control Channel Units (CCEs) within the first time interval.

[0164] Optionally, in the physical downlink control channel monitoring device 500 of this application embodiment, the mapping priority of the first SS set within the first time interval is determined by at least one of the following:

[0165] The type of the first SS set; the index value of the first SS set; the number of repetitions of the first SS set; the number of completed repetitions of the first SS set; network-side device configuration or protocol agreement, wherein the first SS set is scrambled by a specific Radio Network Temporary Identifier (RNTI) or contains a specific Downlink Control Information (DCI) format.

[0166] Optionally, in the physical downlink control channel monitoring device 500 of this application embodiment, when the first SSset is repeated according to SS set, the number of repetitions of the first SS set is equal to the number of repetitions of the first SS set; when the first SS set is repeated according to aggregation level AL, the number of repetitions of the first SS set is: the largest number of AL repetitions among all ALs configured in the first SS set, or the sum of the number of repetitions of all ALs configured in the first SS set; when the first SS set is repeated according to DCI format, the number of repetitions of the first SS set is: the largest number of DCI format repetitions among all DCI format repetitions configured in the first SS set, or the sum of the number of repetitions of all DCI formats configured in the first SS set.

[0167] Optionally, in the physical downlink control channel monitoring device 500 of this application embodiment, if the number of repetitions of the first SSset is greater, the index value of the first SSset is greater; or if the number of repetitions of the first SSset is smaller, the index value of the first SSset is greater.

[0168] Optionally, in the physical downlink control channel monitoring device 500 of this application embodiment, the above-mentioned N CORESETs have the same or different quasi-co-located QCL type D attribute.

[0169] Optionally, in the physical downlink control channel monitoring device 500 of this application embodiment, the above-mentioned CORESET monitoring rules include:

[0170] At the PDCCH listening time, the first CORESET among the N CORESETs is listened to. The first CORESET is associated with the second SS set. The second SS set is the SS set with the highest mapping priority determined in the first SS set based on the first mapping rule.

[0171] Optionally, the physical downlink control channel monitoring device 500 in this application embodiment may further include:

[0172] The receiving module is configured to receive indication information reported by the terminal device before transmitting the candidate physical downlink control channel (PDCCH) within a first time interval according to the first mapping rule. The indication information is used to indicate whether the terminal device supports the first mapping rule.

[0173] Optionally, in the physical downlink control channel monitoring device 500 of this application embodiment, the indication information is used to indicate whether the terminal device supports the first mapping rule when the first time interval is greater than or equal to two time slots or two monitoring spans.

[0174] Optionally, in the physical downlink control channel monitoring device 500 of this application embodiment, the above-mentioned candidate PDCCH includes duplicate candidate PDCCH.

[0175] Optionally, in the physical downlink control channel monitoring device 500 of this application embodiment, the SS set where the above-mentioned candidate PDCCH is located is the terminal-specific search space set USS set and / or the public search space set CSS set.

[0176] In this embodiment, the network-side device can transmit candidate PDCCHs within K time slots or K listening spans (i.e., a first time interval) according to a first mapping rule. The first mapping rule specifies the mapping priority of a first SS set within the first time interval. Furthermore, the first mapping rule applies not only to determining the mapping priority of an SS set and listening to candidate PDCCHs within a single time slot or listening span, but also to determining the mapping priority of SS sets and listening to candidate PDCCHs across multiple time slots or multiple listening spans. Specifically, the first mapping rule can be used to indicate at least one of the following: the mapping priority of the first SS set within the aforementioned first time interval; the CORESET listening rule when multiple (i.e., N) CORESETs overlap resources during PDCCH listening; and the mapping rule for the candidate PDCCH across time slots or across listening spans. This application provides an embodiment of an SSset mapping rule (or advance constraint rule) applicable to SSsets of one or more time slots or one listening span, which is applicable to candidate PDCCH listening over more than one time slot or one listening span. It is also applicable to scenarios involving repeated PDCCH transmissions when the first SSset contains at least one SSset carrying a duplicate PDCCH. Furthermore, this embodiment also provides a listening rule for CORESETs applicable when multiple CORESET resources conflict.

[0177] The device for monitoring the physical downlink control channel in this application embodiment can be a device, or it can be a component, integrated circuit, or chip in a network-side device. The device can be a network-side device. For example, the network-side device can include, but is not limited to, the type of network-side device 12 listed above.

[0178] The physical downlink control channel monitoring device in this application embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit the specific operating system used.

[0179] The physical downlink control channel monitoring device provided in this application embodiment can achieve... Figure 3 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0180] Optional, such as Figure 6 As shown, this application embodiment also provides a communication device 600, including a processor 601, a memory 602, and a program or instructions stored in the memory 602 and executable on the processor 601. For example, when the communication device 600 is a terminal, the program or instructions executed by the processor 601 implement the above-mentioned... Figure 2The various processes of the corresponding physical downlink control channel monitoring method embodiments can achieve the same technical effect. When the communication device 600 is a network-side device, the above-mentioned procedures are implemented when the program or instruction is executed by the processor 601. Figure 3 The various processes of the corresponding physical downlink control channel monitoring method embodiments can achieve the same technical effect, and will not be described again here to avoid repetition.

[0181] Figure 7 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0182] The terminal 700 includes, but is not limited to, components such as: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, and processor 710.

[0183] Those skilled in the art will understand that the terminal 700 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 710 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 7 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0184] It should be understood that, in this embodiment, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042. The GPU 7041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0185] In this embodiment, the radio frequency unit 701 receives downlink data from the network-side device and processes it for the processor 710; additionally, it sends uplink data to the network-side device. Typically, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0186] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 709 may include high-speed random access memory and non-volatile memory, wherein the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0187] Processor 710 may include one or more processing units; optionally, processor 710 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 710.

[0188] The processor 710 is configured to monitor candidate physical downlink control channels (PDCCHs) within a first time interval according to a first mapping rule. The first time interval includes K time slots or K monitoring spans, where K is an integer greater than or equal to 1. The first mapping rule is used to indicate at least one of the following: the mapping priority of a first search space set (SS set) within the first time interval; the CORESET monitoring rule when N control resource sets (CORESET) overlap at the time of PDCCH monitoring, where N is an integer greater than 1; and the mapping rule for candidate PDCCHs across time slots or across monitoring spans.

[0189] In this embodiment, the terminal device can monitor candidate PDCCHs within K time slots or K monitoring spans (i.e., a first time interval) according to a first mapping rule. The first mapping rule specifies the mapping priority of a first SS set within the first time interval. Furthermore, this first mapping rule applies not only to determining the mapping priority of an SS set within a single time slot or monitoring span and to monitoring candidate PDCCHs, but also to determining the mapping priority of SS sets across multiple time slots or multiple monitoring spans and to monitoring candidate PDCCHs. Specifically, the first mapping rule can be used to indicate at least one of the following: the mapping priority of the first SS set within the aforementioned first time interval; the CORESET monitoring rule when multiple (i.e., N) CORESETs overlap during PDCCH monitoring; and the mapping rule for candidate PDCCHs across time slots or monitoring spans. This embodiment provides a mapping rule (or advance definition rule) applicable to SSsets within one or more time slots or one monitoring span, thus enabling monitoring of candidate PDCCHs across more than one time slot or one monitoring span. In addition, this embodiment can also provide the applicable CORESET listening rules when multiple CORESET resources conflict.

[0190] Optionally, the radio frequency unit 701 is configured to report indication information before listening to the candidate physical downlink control channel (PDCCH) within a first time interval according to the first mapping rule, the indication information being used to indicate whether the first mapping rule is supported.

[0191] In this embodiment, before detecting (or monitoring) candidate PDCCHs within a first time interval according to the first mapping rule, the terminal device may pre-report whether it supports the first mapping rule, so that the network-side device can configure the SS set according to the specific situation reported by the terminal device. In one example, if the terminal device reports that it supports the first mapping rule within the first time interval, the network-side device can configure the SS set according to the first mapping rule based on the reported content, further enabling the terminal device to detect candidate PDCCHs within the first time interval according to the first mapping rule.

[0192] Optionally, the processor 710 is configured to perform one of the following operations: adjust the mapping priority of the first SS set in the (M+1)th time slot of the K time slots based on the number of completed repetitions of the first SS set in the first M time slots of the K time slots; adjust the mapping priority of the first SS set in the (M+1)th listening span of the K listening span based on the number of completed repetitions of the first SS set in the first M listening spans of the K listening spans.

[0193] In this embodiment of the application, during the process of monitoring candidate PDCCHs within K time slots or K monitoring spans according to the aforementioned first mapping rule, the mapping priority of subsequent time slots or monitoring spans within the K time slots or K monitoring spans can be dynamically adjusted based on the number of completed repetitions of the SS set within the first M time slots of the K time slots or M monitoring spans of the K monitoring spans. For example, the mapping priority of the (M+1)th time slot or the (M+1)th monitoring span. That is, when the first time interval includes multiple time slots or multiple monitoring spans, the mapping priority of some time slots or monitoring spans within the first time interval can be dynamically adjusted.

[0194] This application also provides a network-side device. For example... Figure 8 As shown, the network device 800 includes an antenna 801, a radio frequency (RF) device 802, and a baseband device 803. The antenna 801 is connected to the RF device 802. In the uplink direction, the RF device 802 receives information through the antenna 801 and transmits the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information to be transmitted and sends it to the RF device 802. The RF device 802 processes the received information and then transmits it through the antenna 801.

[0195] The aforementioned frequency band processing device can be located in the baseband device 803. The method executed by the network-side device in the above embodiments can be implemented in the baseband device 803, which includes a processor 804 and a memory 805.

[0196] The baseband device 803 may, for example, include at least one baseband board on which multiple chips are disposed, such as... Figure 8 As shown, one of the chips, for example, is a processor 804, which is connected to a memory 805 to call the program in the memory 805 and execute the network device operations shown in the above method embodiment.

[0197] The baseband device 803 may also include a network interface 806 for exchanging information with the radio frequency device 802, such as a common public radio interface (CPRI).

[0198] Specifically, the network-side device in this embodiment of the invention further includes: instructions or programs stored in memory 805 and executable on processor 804, wherein processor 804 calls the instructions or programs in memory 805 to execute... Figure 5 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0199] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of any of the above-described physical downlink control channel monitoring method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0200] The processor mentioned above is the processor in the terminal or network-side device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0201] This application also provides a computer program product, which includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, they implement the various processes of the above-described corresponding physical downlink control channel monitoring method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0202] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions for terminal devices or network-side devices to implement the various processes of the above-mentioned corresponding physical downlink control channel monitoring method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0203] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0204] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0205] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0206] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for monitoring the physical downlink control channel, applied to a terminal device, characterized in that, The method includes: According to the first mapping rule, the candidate physical downlink control channel (PDCCH) is monitored within the first time interval, which includes K time slots or K monitoring spans, where K is an integer greater than or equal to 1. Wherein, the first mapping rule is used to indicate the mapping priority of the first search space set SS set within the first time interval; the first SS set includes at least one SS set carrying a repeated PDCCH, wherein the repeated PDCCH is at least a portion of the candidate PDCCH; The mapping priority of the first SS set within the first time interval is determined by at least one of the following: The index value of the first SS set; The number of times the PDCCH carried by the first SS set is repeated; Specifically, if the number of times the PDCCH carried by the first SS set is repeated is greater, then the index value of the first SS set is greater; or, if the number of times the PDCCH carried by the first SS set is repeated is less, then the index value of the first SS set is greater.

2. The method according to claim 1, characterized in that, The first mapping rule is also used to indicate at least one of the following: The CORESET listening rules when N control resource sets CORESET overlap during PDCCH listening, where N is an integer greater than 1; The mapping rules for candidate PDCCH across time slots or across listening spans.

3. The method according to claim 1, characterized in that, The first SS set satisfies at least one of the following: The first SS set is the SS set on the bandwidth portion of the BWP; The first SS set is the SS set in the search space group on BWP.

4. The method according to claim 1, characterized in that, At least one of the following is configured by the network-side device or agreed upon by the protocol: The maximum number of candidate PDCCHs to be monitored within the first time interval; The maximum number of non-overlapping Control Channel Units (CCEs) within the first time interval.

5. The method according to claim 1, characterized in that, The mapping priority of the first SS set within the first time interval is further determined by at least one of the following: The type of the first SS set; The number of times the PDCCH carried by the first SS set has been repeated; Network-side device configuration or protocol agreement; wherein, the first SS set is scrambled by a specific radio network temporary identifier RNTI or contains a specific downlink control information format DCI format.

6. The method according to claim 5, characterized in that, When the first SS set is repeated according to the SS set, the number of times the PDCCH carried by the first SS set is repeated is equal to the number of times the PDCCH carried by the first SS set is repeated. When the first SS set is repeated according to the aggregation level AL, the number of repetitions of the PDCCH carried by the first SS set is: the largest AL repetition among all the AL repetitions configured in the first SS set, or the sum of all the AL repetitions configured in the first SS set. When the first SS set repeats according to the DCI format, the number of times the PDCCH carried by the first SS set is repeated is: the largest number of times the DCI format is repeated among all the DCI formats configured in the first SS set, or the sum of the number of times the DCI formats are repeated in the first SS set.

7. The method according to claim 5, characterized in that, The method also includes one of the following: Based on the number of times the PDCCH carried by the first SS set has been repeated in the first M time slots of the K time slots, adjust the mapping priority of the first SS set in the (M+1)th time slot of the K time slots; Based on the number of times the PDCCH carried by the first SS set has been repeated in the first M listening spans of the K listening spans, adjust the mapping priority of the first SS set on the (M+1)th listening span of the K listening spans.

8. The method according to claim 2, characterized in that, The N CORESETs have the same or different quasi-co-located QCL type D attribute.

9. The method according to claim 2, characterized in that, The CORESET monitoring rules include: At the PDCCH listening time, the first CORESET among the N CORESETs is listened to. The first CORESET is associated with the second SS set. The second SS set is the SS set with the highest mapping priority determined in the first SS set based on the first mapping rule.

10. The method according to claim 1, characterized in that, Before listening to the candidate physical downlink control channel (PDCCH) within the first time interval according to the first mapping rule, the method further includes: The system reports instruction information, which is used to indicate whether the terminal device supports the first mapping rule.

11. The method according to claim 10, characterized in that, The indication information is used to indicate whether the terminal device supports the first mapping rule when the first time interval is greater than or equal to two time slots or two listening spans.

12. The method according to claim 1, characterized in that, The candidate PDCCH contains duplicate candidate PDCCHs.

13. The method according to claim 1 or 12, characterized in that, The method further includes: During the first time interval, the candidate PDCCH is jointly detected and / or independently detected.

14. The method according to claim 1, characterized in that, The SS set to which the candidate PDCCH is located includes the terminal-specific search space set USS set and / or the public search space set CSS set.

15. A method for monitoring the physical downlink control channel, applied to network-side equipment, characterized in that, The method includes: According to the first mapping rule, candidate physical downlink control channels (PDCCHs) are transmitted within a first time interval, which includes K time slots or K listening spans, where K is an integer greater than or equal to 1. Wherein, the first mapping rule is used to indicate the mapping priority of the first search space set SS set within the first time interval; the first SS set includes at least one SS set carrying a repeated PDCCH, wherein the repeated PDCCH is at least a portion of the candidate PDCCH; The mapping priority of the first SS set within the first time interval is determined by at least one of the following: The index value of the first SS set; The number of times the PDCCH carried by the first SS set is repeated; Specifically, if the number of times the PDCCH carried by the first SS set is repeated is greater, then the index value of the first SS set is greater; or, if the number of times the PDCCH carried by the first SS set is repeated is less, then the index value of the first SS set is greater.

16. The method according to claim 15, characterized in that, The first mapping rule is also used to indicate at least one of the following: The CORESET listening rules when N control resource sets CORESET overlap during PDCCH listening, where N is an integer greater than 1; The mapping rules for candidate PDCCH across time slots or across listening spans.

17. The method according to claim 15, characterized in that, The first SS set satisfies at least one of the following: The first SS set is the SS set on the bandwidth portion of the BWP; The first SS set is the SS set in the search space group on BWP.

18. The method according to claim 15, characterized in that, The method further includes: Configure the maximum number of candidate PDCCHs to be monitored within the first time interval; and / or The maximum number of Control Channel Units (CCEs) configured to not overlap within the first time interval.

19. The method according to claim 15, characterized in that, The mapping priority of the first SS set within the first time interval is further determined by at least one of the following: The type of the first SS set; The number of times the PDCCH carried by the first SS set has been repeated; The network-side device configuration or protocol agreement stipulates that the first SS set is scrambled by a specific radio network temporary identifier RNTI or contains a specific downlink control information format DCI format.

20. The method according to claim 19, characterized in that, When the first SS set is repeated according to the SS set, the number of times the PDCCH carried by the first SS set is repeated is equal to the number of times the PDCCH carried by the first SS set is repeated. When the first SS set is repeated according to the aggregation level AL, the number of repetitions of the PDCCH carried by the first SS set is: the largest AL repetition among all the AL repetitions configured in the first SS set, or the sum of all the AL repetitions configured in the first SS set. When the first SS set repeats according to the DCI format, the number of times the PDCCH carried by the first SS set is repeated is: the largest number of times the DCI format is repeated among all the DCI formats configured in the first SS set, or the sum of the number of times the DCI formats are repeated in the first SS set.

21. The method according to claim 16, characterized in that, The N CORESETs have the same or different quasi-co-located QCL type D attribute.

22. The method according to claim 16, characterized in that, The CORESET monitoring rules include: At the PDCCH listening time, the first CORESET among the N CORESETs is listened to. The first CORESET is associated with the second SS set. The second SS set is the SS set with the highest mapping priority determined in the first SS set based on the first mapping rule.

23. The method according to claim 15, characterized in that, Before transmitting the candidate physical downlink control channel (PDCCH) within the first time interval according to the first mapping rule, the method further includes: The terminal device receives an indication message, which indicates whether the terminal device supports the first mapping rule.

24. The method according to claim 23, characterized in that, The indication information is used to indicate whether the terminal device supports the first mapping rule when the first time interval is greater than or equal to two time slots or two listening spans.

25. The method according to claim 15, characterized in that, The candidate PDCCH contains duplicate candidate PDCCHs.

26. The method according to claim 15, characterized in that, The SS set to which the candidate PDCCH is located is the terminal-specific search space set USS set and / or the public search space set CSS set.

27. A device for monitoring a physical downlink control channel, applied to a terminal device, characterized in that, include: The monitoring module is used to monitor candidate physical downlink control channels (PDCCH) within a first time interval according to a first mapping rule. The first time interval includes K time slots or K monitoring spans, where K is an integer greater than or equal to 1. Wherein, the first mapping rule is used to indicate the mapping priority of the first search space set SS set within the first time interval; the first SS set includes at least one SS set carrying a repeated PDCCH, wherein the repeated PDCCH is at least a portion of the candidate PDCCH; The mapping priority of the first SS set within the first time interval is determined by at least one of the following: The index value of the first SS set; The number of times the PDCCH carried by the first SS set is repeated; Specifically, if the number of times the PDCCH carried by the first SS set is repeated is greater, then the index value of the first SS set is greater; or, if the number of times the PDCCH carried by the first SS set is repeated is smaller, then the index value of the first SS set is greater.

28. The apparatus according to claim 27, characterized in that, The first mapping rule is also used to indicate at least one of the following: The CORESET listening rules when N control resource sets CORESET overlap during PDCCH listening, where N is an integer greater than 1; The mapping rules for candidate PDCCH across time slots or across listening spans.

29. The apparatus according to claim 27, characterized in that, The first SS set satisfies at least one of the following: The first SS set is the SS set on the bandwidth portion of the BWP; The first SS set is the SS set in the search space group on BWP.

30. The apparatus according to claim 27, characterized in that, The mapping priority of the first SS set within the first time interval is further determined by at least one of the following: The type of the first SS set; The number of times the PDCCH carried by the first SS set has been repeated; The network-side device configuration or protocol agreement stipulates that the first SS set is scrambled by a specific radio network temporary identifier RNTI or contains a specific downlink control information format DCI format.

31. The apparatus according to claim 27, characterized in that, When the first SS set is repeated according to the SS set, the number of times the PDCCH carried by the first SS set is repeated is equal to the number of times the PDCCH carried by the first SS set is repeated. When the first SS set is repeated according to the aggregation level AL, the number of repetitions of the PDCCH carried by the first SS set is: the largest AL repetition among all the AL repetitions configured in the first SS set, or the sum of all the AL repetitions configured in the first SS set. When the first SS set repeats according to the DCI format, the number of times the PDCCH carried by the first SS set is repeated is: the largest number of times the DCI format is repeated among all the DCI formats configured in the first SS set, or the sum of the number of times the DCI formats are repeated in the first SS set.

32. The apparatus according to claim 31, characterized in that, The device further includes a processing module, the processing module being configured to perform one of the following operations: Based on the number of times the PDCCH carried by the first SS set has been repeated in the first M time slots of the K time slots, adjust the mapping priority of the first SS set in the (M+1)th time slot of the K time slots; Based on the number of times the PDCCH carried by the first SS set has been repeated in the first M listening spans of the K listening spans, adjust the mapping priority of the first SS set on the (M+1)th listening span of the K listening spans.

33. The apparatus according to claim 28, characterized in that, The CORESET monitoring rules include: At the PDCCH listening time, the first CORESET among the N CORESETs is listened to. The first CORESET is associated with the second SS set. The second SS set is the SS set with the highest mapping priority determined in the first SS set based on the first mapping rule.

34. The apparatus according to claim 27, characterized in that, The device further includes: The reporting module is used to report indication information before listening to the candidate physical downlink control channel (PDCCH) within a first time interval according to the first mapping rule. The indication information is used to indicate whether the terminal device supports the first mapping rule.

35. The apparatus according to claim 27, characterized in that, The device further includes: The detection module is used to perform joint detection and / or independent detection on the candidate PDCCH within the first time interval.

36. A device for monitoring a physical downlink control channel, characterized in that, include: The transmission module is used to transmit candidate physical downlink control channels (PDCCHs) within a first time interval according to a first mapping rule. The first time interval includes K time slots or K listening spans, where K is an integer greater than or equal to 1. Wherein, the first mapping rule is used to indicate the mapping priority of the first search space set SS set within the first time interval; the first SS set includes at least one SS set carrying a repeated PDCCH, wherein the repeated PDCCH is at least a portion of the candidate PDCCH; The mapping priority of the first SS set within the first time interval is determined by at least one of the following: The index value of the first SS set; The number of times the PDCCH carried by the first SS set is repeated; Specifically, if the number of times the PDCCH carried by the first SS set is repeated is greater, then the index value of the first SS set is greater; or, if the number of times the PDCCH carried by the first SS set is repeated is less, then the index value of the first SS set is greater.

37. The apparatus according to claim 36, characterized in that, The first mapping rule is also used to indicate at least one of the following: The CORESET listening rules when N control resource sets CORESET overlap during PDCCH listening, where N is an integer greater than 1; The mapping rules for candidate PDCCH across time slots or across listening spans.

38. The apparatus according to claim 36, characterized in that, The first SS set satisfies at least one of the following: The first SS set is the SS set on the bandwidth portion of the BWP; The first SS set is the SS set in the search space group on BWP.

39. The apparatus according to claim 36, characterized in that, The device further includes a configuration module, the configuration module being used for: Configure the maximum number of candidate PDCCHs to be monitored within the first time interval; and / or The maximum number of Control Channel Units (CCEs) configured to not overlap within the first time interval.

40. The apparatus according to claim 36, characterized in that, The mapping priority of the first SS set within the first time interval is further determined by at least one of the following: The type of the first SS set; The number of times the PDCCH carried by the first SS set has been repeated; The network-side device configuration or protocol agreement stipulates that the first SS set is scrambled by a specific radio network temporary identifier RNTI or contains a specific downlink control information format DCI format.

41. The apparatus according to claim 40, characterized in that, When the first SS set is repeated according to the SS set, the number of times the PDCCH carried by the first SS set is repeated is equal to the number of times the PDCCH carried by the first SS set is repeated. When the first SS set is repeated according to the aggregation level AL, the number of repetitions of the PDCCH carried by the first SS set is: the largest AL repetition among all the AL repetitions configured in the first SS set, or the sum of all the AL repetitions configured in the first SS set. When the first SS set repeats according to the DCI format, the number of times the PDCCH carried by the first SS set is repeated is: the largest number of times the DCI format is repeated among all the DCI formats configured in the first SS set, or the sum of the number of times the DCI formats are repeated in the first SS set.

42. The apparatus according to claim 37, characterized in that, The CORESET monitoring rules include: At the PDCCH listening time, the first CORESET among the N CORESETs is listened to. The first CORESET is associated with the second SS set. The second SS set is the SS set with the highest mapping priority determined in the first SS set based on the first mapping rule.

43. The apparatus according to claim 36, characterized in that, The device further includes: The receiving module is configured to receive indication information reported by the terminal device before transmitting the candidate physical downlink control channel (PDCCH) within a first time interval according to the first mapping rule. The indication information is used to indicate whether the terminal device supports the first mapping rule.

44. A terminal device, characterized in that, include: A memory, a processor, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method as described in any one of claims 1 to 14.

45. A network-side device, characterized in that, include: A memory, a processor, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method as described in any one of claims 15 to 26.

46. ​​A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the method as described in any one of claims 1 to 14, or the steps of the method as described in any one of claims 15 to 26.

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