Communication methods and apparatuses, terminal devices, network side devices and storage medium

Abstract

The present application belongs to the technical field of communications. Disclosed are communication methods and apparatuses, terminal devices, network side devices, and a storage medium. A communication method in the embodiments of the present application comprises: a terminal device sends physical downlink control channel (PDCCH) monitoring capability information to a network side device, the PDCCH monitoring capability information being monitoring capability information in the time granularity of symbol groups.

Description

Communication methods, devices, terminal equipment, network-side equipment, and storage media

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510359882.9, filed on March 25, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to a communication method, apparatus, terminal equipment, network-side equipment, and storage medium. Background Technology

[0004] In 5G New Radio (NR), search space configuration is a crucial concept. In 5G NR, the search space is primarily used for receiving control signals, particularly for blind detection of the Physical Downlink Control Channel (PDCCH).

[0005] Currently, in the Third Generation Partnership Project (3GPP) protocol, one approach is as follows: the monitoring capability granularity of the PDCCH monitoring capability parameters reported by the terminal is at the time slot level. The network side configures the parameters based on the slot search space, typically configuring the period of PDCCH monitoring, the number of slots monitored in one period, and the symbol position of the PDCCH monitoring within a slot at the time slot level. Another approach is as follows: the monitoring capability granularity of the PDCCH monitoring capability parameters reported by the terminal is at the slot group level. The network side configures the parameters based on the slot search space, typically configuring the period of PDCCH monitoring, the bit map of the monitored slots within the slot group, the number of slot groups monitored in one period, and the symbol position of the PDCCH monitoring within a slot at the slot level.

[0006] Therefore, different frameworks are required to configure the search space for different PDCCH monitoring capability parameters, resulting in high complexity in the implementation of terminals and communication protocols. Summary of the Invention

[0007] This application provides a communication method, apparatus, terminal device, network-side device, and storage medium, which can reduce the complexity of terminal and communication protocol implementation.

[0008] Firstly, a communication method is provided, executed by a terminal device, the method comprising: sending physical downlink control channel (PDCCH) monitoring capability information to a network-side device, wherein the PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

[0009] Secondly, a communication method is provided, executed by a network-side device, the method comprising: receiving PDCCH monitoring capability information from a terminal device, wherein the PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

[0010] Thirdly, a communication device is provided, comprising: a transmitting module for transmitting PDCCH monitoring capability information to network-side devices, wherein the PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

[0011] Fourthly, a communication device is provided, comprising: a receiving module for receiving PDCCH monitoring capability information from a terminal device, wherein the PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

[0012] Fifthly, a communication device is provided, the device being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0013] In a sixth aspect, a terminal device is provided, the terminal device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0014] In a seventh aspect, a terminal device is provided, including a processor and a communication interface, wherein the communication interface is used to send PDCCH monitoring capability information to a network-side device, and the PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

[0015] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0016] In a ninth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to receive PDCCH monitoring capability information from a terminal device, the PDCCH monitoring capability information being monitoring capability information with symbol groups as the time granularity.

[0017] In a tenth 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 implement the steps of the method described in the second aspect.

[0018] Eleventhly, a wireless communication system is provided, comprising: a terminal device and a network-side device, wherein the terminal device can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0019] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0020] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the communication method as described in the first aspect, or to implement the steps of the communication method as described in the second aspect.

[0021] In this embodiment, the PDCCH monitoring capability information sent by the terminal device to the network-side device is PDCCH monitoring capability information with symbol group as the time granularity, which improves the flexibility of the definition of PDCCH monitoring capability information, making the PDCCH monitoring capability information applicable to a variety of application scenarios and reducing the complexity of terminal device and communication protocol implementation. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0023] Figure 2 is a flowchart of one of the communication methods provided in an embodiment of this application;

[0024] Figure 3 is a second flowchart of a communication method provided in an embodiment of this application;

[0025] Figure 4 is a flowchart of a communication method provided in an embodiment of this application;

[0026] Figure 5 is a flowchart of a communication method provided in an embodiment of this application;

[0027] Figure 6 is a flowchart of a communication method provided in an embodiment of this application;

[0028] Figure 7 is a schematic diagram of one of the structures of a communication device provided in an embodiment of this application;

[0029] Figure 8 is a second schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0030] Figure 9 is a third schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0031] Figure 10 is a fourth structural schematic diagram of a communication device provided in an embodiment of this application;

[0032] Figure 11 is a schematic diagram of the hardware structure of a communication device provided in an embodiment of this application;

[0033] Figure 12 is a schematic diagram of the hardware structure of a terminal device provided in an embodiment of this application;

[0034] Figure 13 is a schematic diagram of the hardware structure of a network-side device provided in an embodiment of this application. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0036] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0037] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0038] 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), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0039] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment 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 User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0040] The technical solutions provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0041] The search space configuration in 5G NR is a crucial concept, used for the allocation and management of resource blocks. In 5G NR, the search space is primarily used for receiving control signals, particularly for blind detection of the PDCCH. The search space in 5G is divided into two categories: Common Search Space (CSS) and User-Specific Search Space (USS). These two types of search spaces serve different purposes:

[0042] The Common Search Space (CSS) is used to broadcast system information and other public information, applicable to all users. Within the CSS, the control information carried by the PDCCH is identical for all devices. Furthermore, the CSS is configured across multiple subcarriers to increase transmission robustness and coverage.

[0043] The User-Specific Search Space (USS) carries scheduling information for a specific user, particularly scheduling related to user data transmission. The USS is identified by the User Equipment (UE), meaning each user has its own USS configuration. This ensures the efficiency and security of transmitting user-specific information.

[0044] In related technologies, there are two main search space configuration schemes. In one scheme, the period of the monitoring occasion (MO) is configured at the slot level, including the number of slots monitored by the MO in one period and the symbol position of the MO within the slot. In the other scheme, based on the slot group, the period of the MO is configured at the slot level (with periodic constraints), the bitmap of the slot is monitored within the slot group, the number of slot groups monitored by the MO in one period, and the symbol position of the MO within the slot.

[0045] In the 5G NR phase, different frameworks were used to serve different scenarios for different PDCCH capabilities and search space definitions, resulting in high complexity for terminal implementation and protocols. In other words, different frameworks were required to configure the search space for different PDCCH monitoring capability parameters. Therefore, there is an urgent need for a search space configuration scheme that is adaptable to all scenarios.

[0046] Therefore, the embodiments of this application provide a communication method, apparatus, terminal device, network-side device, and storage medium in which the PDCCH monitoring capability information sent by the terminal device to the network-side device is PDCCH monitoring capability information with symbol group as the time granularity. This solves the problem of insufficient flexibility in the definition of PDCCH monitoring capability information, making the PDCCH monitoring capability information applicable to various application scenarios and reducing the complexity of terminal device and communication protocol implementation.

[0047] This application provides a communication method, and Figure 2 shows a flowchart of a communication method provided by this application. As shown in Figure 2, the communication method provided by this application may include the following step 201.

[0048] Step 201: The terminal device sends PDCCH monitoring capability information to the network-side device.

[0049] In some embodiments of this application, the above-mentioned PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

[0050] It is understandable that the above PDCCH monitoring capability information is defined with symbol groups as the time granularity.

[0051] In some embodiments of this application, the above-mentioned PDCCH monitoring capability information refers to information about PDCCH monitoring capability.

[0052] It is understandable that the above-mentioned PDCCH monitoring capability is a monitoring capability with symbol groups as the time granularity.

[0053] In some embodiments of this application, the above-mentioned PDCCH monitoring capability information is used to indicate at least one of the following S1 to S18:

[0054] S1. The symbol group size N of the above time granularity, where N is a positive integer.

[0055] In some embodiments of this application, the symbol group size N refers to the number of symbols in the symbol group being N.

[0056] In some embodiments of this application, the above symbols can be a first time unit, the above symbol group can be a second time unit, the first time unit is a sub-unit of the second time unit, and the duration of the second time unit is greater than the duration of the first time unit.

[0057] In some embodiments of this application, N takes the value of at least one item from the set {4,7,14,28,56,112}.

[0058] In some embodiments of this application, the above-mentioned symbol group includes at least two consecutive symbols.

[0059] In some embodiments of this application, the above-mentioned symbol group is determined based on one of the following:

[0060] If the number of symbols F in a time unit is an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group.

[0061] If the number of symbols F in a time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are used as symbol groups.

[0062] If the number of symbols F in a time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are used as the first symbol group. The first symbol group is not configured with PDCCH monitoring timing.

[0063] For example, starting with symbol 0 in each radio frame (symbol count F, symbol numbers 0, 1, 2, ..., F-1), every N symbols are defined as a symbol group, i.e., (0, 1, ..., N-1), (N, N+1, ..., 2*N-1), ..., (FN, F-N+1, ..., F-1). Here, F is an integer multiple of N. It should be noted that the value of N in this example is a specific value, such as N = 7, 14, 28, or 56.

[0064] For example, starting with symbol 0 in each radio frame or time slot (symbol count S, symbol numbers 0, 1, 2, ..., S-1), every N symbols are sequentially identified as a symbol group. If the remaining symbols in the last radio frame or time slot are less than N, they can be used as a separate symbol group, or not as a symbol group (i.e., PDCCH MO cannot be configured). Here, S is not an integer multiple of N. It should be noted that the value of N in this example is a specific value, for example, N = 4.

[0065] For example, the aforementioned radio frame is the highest-level time unit. A radio frame contains multiple subframes, which are the next-level time units. Subframes are further decomposed into multiple slots or mini-slots. Furthermore, a slot or mini-slot can be considered a basic time unit. Each slot or mini-slot contains multiple Orthogonal Frequency Division Multiplexing (OFDM) symbols.

[0066] S2. The number of symbols L of the Control Resource Set (Coreset) that the terminal device supports configuring, where L is a positive integer.

[0067] In some embodiments of this application, the value of L is at least one item in the set {1,2,3,6,12}.

[0068] S3, PDCCH monitoring timing is the configurable symbol position in each symbol group.

[0069] S4, PDCCH monitoring timing is the configurable starting symbol position in each symbol group.

[0070] In some embodiments of this application, the symbol positions for configurable PDCCH monitoring timing are the same in different symbol groups.

[0071] In some embodiments of this application, the configurable starting symbol position in the above symbol group is the M1th symbol in the symbol group, and the configurable ending symbol position in the symbol group is the M2th symbol in the symbol group, where M1 and M2 are positive integers.

[0072] In some embodiments of this application, the configurable symbol positions in the above-mentioned symbol group satisfy at least one of the following:

[0073] M1 is predefined;

[0074] M2 is predefined;

[0075] The value of M2 is at least one item in the set {2, 13, N-1};

[0076] (M1,M2) takes at least one value from the set {(0,13),(14,27),(28,41),(42,55)}.

[0077] In some embodiments of this application, the PDCCH monitoring capability information can indicate that the configurable symbol positions of the PDCCH MO in each symbol group are from symbol M1 to symbol M2, where 0 <= M1 <= M2 <= N-1;

[0078] Optionally, the terminal device may only report M1.

[0079] Optionally, M1 is a predefined value of the protocol, such as M1 = 0.

[0080] Optionally, M2 is a predefined value in the protocol, such as M2 = 2, 13, or N-1.

[0081] Optionally, the values ​​of M1 and M2 are the same for each symbol group.

[0082] In some embodiments of this application, the PDCCH monitoring capability information can indicate the number of symbols P, i.e., M2-M1+1, contained in the configurable symbol positions of the PDCCH MO in each symbol group.

[0083] S5. The maximum number of PDCCH monitoring time spans that can be configured in each of the above symbol groups.

[0084] In some embodiments of this application, the PDCCH monitoring capability information may indicate the maximum number K of configurable PDCCH monitoring time spans (PDCCH MO spans) from symbol M1 to symbol M2 in each symbol group, where K is a positive integer.

[0085] In some embodiments of this application, the PDCCH monitoring timing span is determined based on the bitmap of the symbol group.

[0086] S6. The maximum number of symbols that can be configured for a single PDCCH monitoring time span in each of the above symbol groups.

[0087] In some embodiments of this application, the PDCCH monitoring capability information may indicate the maximum number of symbols Y, where Y is a positive integer, that can be configured in a PDCCH MO span from symbol M1 to symbol M2 in each symbol group.

[0088] S7. In any symbol group, if the maximum number of configurable PDCCH monitoring time spans is greater than 1, the minimum interval number of adjacent PDCCH monitoring time spans that can be configured in any symbol group.

[0089] In some embodiments of this application, the PDCCH monitoring capability information can indicate the minimum interval symbol number X between the configurable PDCCH MO spans from symbol M1 to symbol M2 in each symbol group when the maximum number K>1 of configurable PDCCH MO spans from symbol M1 to symbol M2 in each symbol group is configured.

[0090] S8. The number of configurable symbol positions in each of the above symbol groups.

[0091] S9. Whether the PDCCH monitoring timing for each of the above symbol groups can cross time slot boundaries.

[0092] In some embodiments of this application, PDCCH monitoring capability information can indicate whether the PDCCH MO of each symbol group can cross the slot boundary.

[0093] S10. Whether the position of the PDCCH monitoring time span is consistent between different symbol groups.

[0094] In some embodiments of this application, PDCCH monitoring capability information can indicate whether the PDCCH MO span is in the same position in each symbol group.

[0095] S11. Whether the PDCCH monitoring time span of each of the above symbol groups can cross the time slot boundary.

[0096] In some embodiments of this application, PDCCH monitoring capability information can indicate whether the PDCCH MO span of each symbol group can cross the slot boundary.

[0097] S12. Whether the time slot between the monitoring time spans of different symbol groups is greater than or equal to the symbol group size N.

[0098] In some embodiments of this application, PDCCH monitoring capability information can indicate whether the gap between PDCCH MO spans of different symbol groups is greater than or equal to the size N of the symbol group.

[0099] S13. Whether the interval between two adjacent Downlink Control Information (DCI) messages is greater than or equal to the preset number of symbols G.

[0100] In some embodiments of this application, the aforementioned preset number of symbols is predefined.

[0101] In some embodiments of this application, the two adjacent DCIs described above satisfy at least one of the following:

[0102] Two adjacent DCIs are downlink grant DCIs (Downlink grant DCI, DL grant DCI);

[0103] Two adjacent DCIs are uplink grant DCIs (Uplink grant DCI, UL grant DCI);

[0104] Between two adjacent DCIs, one DCI is the downlink grant DCI, and the other DCI is the uplink grant DCI.

[0105] In some embodiments of this application, the PDCCH monitoring capability information described above can indicate whether the interval between two adjacent DCIs needs to be no less than a preset number of symbols, wherein the two DCIs satisfy at least one of the following:

[0106] Two DCIs are DL grant DCIs;

[0107] Both DCIs are UL-granted DCIs;

[0108] One DCI is DL-granted DCI, and the other DCI is UL-granted DCI.

[0109] In some embodiments of this application, the value of G can be predefined or reported by the terminal device.

[0110] S14. PDCCH monitoring is prohibited across symbol groups.

[0111] In some embodiments of this application, PDCCH monitoring capability information can indicate the size of the PDCCH monitoring capability granularity symbol group, indicating that the PDCCH MO configured by the terminal cannot cross symbol groups.

[0112] The following four embodiments will be used to illustrate the process of determining the PDCCH MO span within a symbol group.

[0113] For example, each symbol group corresponds to a bitmap b(l), where 0 <= l <= N-1. If symbol l in this symbol group has a PDCCH monitoring configuration, then b(l) = 1; otherwise, b(l) = 0. For each symbol group, the first PDCCH MO span starts from the smallest symbol where b(l) = 1 and proceeds Y symbols; the next PDCCH MO span starts from the smallest symbol where b(l) = 1 that is not included in the previous PDCCH MO span and proceeds Y symbols, and this process continues until the end of the symbol group. It should be noted that the PDCCH MO span pattern determined by the method corresponding to this example may be different for symbol groups with monitoring configurations.

[0114] Optionally, the PDCCH MO span defined above cannot cross the slot boundary.

[0115] Optionally, the PDCCH MO span defined above is divided into two independent spans by the slot boundary.

[0116] For example, for all symbol groups with PDCCH monitoring configuration, a bitmap b(l) is obtained, where 0 <= l <= N-1. If symbol l in any symbol group has PDCCH monitoring configuration, then b(l) = 1; otherwise, b(l) = 0. The first PDCCH MO span starts from the smallest symbol with b(l) = 1 and proceeds Y symbols; the next PDCCH MO span starts from the smallest symbol with b(l) = 1 that is not included in the previous PDCCH MO span and proceeds Y symbols, and the above process continues until the end of the symbol group. It should be noted that the PDCCH MO span pattern determined by the method corresponding to this example is the same in all symbol groups with monitoring configuration.

[0117] Optionally, the PDCCH MO span defined above cannot cross the slot boundary.

[0118] Optionally, the PDCCH MO span defined above is divided into two independent spans by the slot boundary.

[0119] For example, for a specific (M1, M2), a bitmap b(l) is obtained for each symbol group, where M1 <= l <= M2. If symbol l in this symbol group has a PDCCH monitoring configuration, then b(l) = 1; otherwise, b(l) = 0. For each symbol group, the first PDCCH MO span starts from the smallest symbol where b(l) = 1 and proceeds Y symbols; the next span starts from the smallest symbol where b(l) = 1 that is not included in the previous PDCCH MO span and proceeds Y symbols, and the above process continues until the end of symbol M2. It should be noted that the PDCCH MO span pattern determined by the method corresponding to this example may be different for symbol groups with monitoring configurations.

[0120] Optionally, the PDCCH MO span defined above cannot cross the slot boundary.

[0121] Optionally, the PDCCH MO span defined above is divided into two independent spans by the slot boundary.

[0122] For example, for a specific (M1, M2), for all symbol groups with PDCCH monitoring configuration, a bitmap b(l) is obtained, where M1 <= l <= M2. If symbol l in any symbol group has PDCCH monitoring configuration, then b(l) = 1; otherwise, b(l) = 0. The first PDCCH MO span starts from the smallest l where b(l) = 1 and proceeds Y symbols; the next PDCCH MO span starts from the smallest l where b(l) = 1 and is not included in the previous PDCCH MO span and proceeds Y symbols. This process continues until symbol M2 ends. It should be noted that the PDCCH MO span pattern determined by the method corresponding to this example is the same for symbol groups with monitoring configuration.

[0123] Optionally, the PDCCH MO span defined above cannot cross the slot boundary.

[0124] Optionally, the PDCCH MO span defined above is divided into two independent spans by the slot boundary.

[0125] In some embodiments of this application, PDCCH monitoring capability information can indicate the size of the PDCCH monitoring capability granularity symbol group, indicating that the PDCCH MO configured by the terminal device cannot cross symbol groups.

[0126] For example, the PDCCH monitoring capability information indicates the size N of the PDCCH monitoring capability granularity symbol group and the configurable symbol positions (M1, M2) of the PDCCH MO in each symbol group. For example, N = 14, (M1, M2) = (0, 2), that is, the number of symbols in each symbol group is 14, and the time domain positions that can be monitored by PDCCH are symbols 0-2 of the symbol group, that is, the first 3 symbols.

[0127] For example, the PDCCH monitoring capability information indicates the size N of the PDCCH monitoring capability granularity symbol group, supports the configurable symbol positions (M1, M2) of PDCCH MO in each symbol group, the terminal device supports the maximum number K of configurable PDCCH MO spans from symbol M1 to symbol M2 in each symbol group, and supports the maximum number of symbols Y of a configurable PDCCH MO span from symbol M1 to symbol M2 in each symbol group. For example, N = 14, (M1, M2) = (0, 13), K = 1, Y = 3, that is, the number of symbols in each symbol group is 14, and the time domain position for PDCCH monitoring is limited to a single span in the symbol group, with a maximum span length of 3 symbols. Or N = 7, (M1, M2) = (0, 6), K = 1, Y = 3, that is, the number of symbols in each symbol group is 7, and the time domain position for PDCCH monitoring is limited to a single span in the symbol group, with a maximum span length of 3 symbols.

[0128] For example, the PDCCH monitoring capability information indicates the size N of the PDCCH monitoring capability granularity symbol group, which supports the configurable symbol position (M1, M2) of PDCCH MO in each symbol group. For example, N = 14, (M1, M2) = (0, 13), that is, the number of symbols in each symbol group is 14, and PDCCH MO can be configured in any symbol in the symbol group.

[0129] For example, the PDCCH monitoring capability information indicates the size N of the PDCCH monitoring capability granularity symbol group. This supports the requirement that the configurable symbol position (M1, M2) of the PDCCH MO in each symbol group and the interval between two adjacent DCIs must be no less than the number of symbols G. For example, N = 14, (M1, M2) = (0, 13), G = 2, that is, the number of symbols in each symbol group is 14. The PDCCH MO can be configured in any symbol of the symbol group, but the interval between two adjacent DCIs must be no less than 2 symbols.

[0130] For example, the PDCCH monitoring capability information indicates the size N of the PDCCH monitoring capability granularity symbol group, supports the configurable symbol positions (M1, M2) of PDCCH MO in each symbol group, the maximum number K of configurable PDCCH MO spans from symbol M1 to symbol M2 in each symbol group supported by the terminal device, the maximum number Y of symbols Y of one configurable PDCCH MO span from symbol M1 to symbol M2 in each symbol group supported, and the minimum number of interval symbols X of configurable PDCCH MO spans from symbol M1 to symbol M2 in each symbol group supported. For example, N = 14, (M1, M2) = (0, 13), K > 1, (X, Y) = (7, 3) or (4, 3).

[0131] S15, the maximum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH monitoring opportunities of repeated PDCCH transmission.

[0132] S16, the minimum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH monitoring opportunities of repeated PDCCH transmission.

[0133] S17. The maximum interval between two adjacent PDCCH monitoring times in multiple PDCCH monitoring times of a two-stage PDCCH.

[0134] The minimum interval between two adjacent PDCCH monitoring times in multiple PDCCH monitoring times of S18, 2-stage PDCCH.

[0135] In some embodiments of this application, as shown in FIG2 and FIG3, the communication method provided in the embodiments of this application may further include the following steps 202 and 203.

[0136] Step 202: The terminal device receives configuration information from the network-side device.

[0137] In some embodiments of this application, the above configuration information is used to configure the search space.

[0138] In some embodiments of this application, the above configuration information includes at least one of the following:

[0139] Temporal location information that can be monitored by PDCCH in the search space;

[0140] Blind detection (BD) information in the search space;

[0141] Search for information about the control-channel element (CCE) in the search space.

[0142] It is understandable that the blind detection information in the search space mentioned above refers to the process by which terminal devices receive control information within the search space through a blind detection mechanism in a 5G NR system. The aforementioned control channel element is the basic unit of the PDCCH and is used to carry DCI.

[0143] In some embodiments of this application, the aforementioned blind detection information is used to indicate the blind detection budget (BD budget), the aforementioned control channel element information is used to indicate the control channel element budget (CCE budget), and the limitations of the blind detection budget and the control channel element budget are applied to the aforementioned symbol group.

[0144] In some embodiments of this application, the aforementioned time-domain location information includes at least one of the following:

[0145] The first number of symbol groups corresponding to one cycle of PDCCH monitoring timing;

[0146] The time domain offset of PDCCH monitoring within the corresponding symbol group;

[0147] The PDCCH monitoring timing corresponds to the bitmap at the time domain position of the corresponding symbol group;

[0148] PDCCH monitoring timing is based on the second number of consecutive symbol groups within a cycle;

[0149] The number of times PDCCH is repeated;

[0150] Types of PDCCH monitoring timing;

[0151] The correlation between PDCCH monitoring timing and other factors.

[0152] In some embodiments of this application, the types of PDCCH monitoring timing mentioned above include at least one of the following:

[0153] Phase 1 (1) st (Stage) PDCCH monitoring timing;

[0154] Phase 2 (2) nd (Stage) PDCCH monitoring timing;

[0155] Timing of two-stage PDCCH monitoring;

[0156] Single-stage PDCCH monitoring timing.

[0157] In some embodiments of this application, the search space is based on the symbol group configuration, the size of which is obtained through network display configuration or terminal reporting capability.

[0158] Step 203: The terminal device monitors the PDCCH based on the configuration information and PDCCH monitoring capability information.

[0159] In some embodiments of this application, the terminal device can perform PDCCH retransmission and PDCCH monitoring based on the search space configuration information received from the network-side device and the PDCCH monitoring capability information sent by the terminal device.

[0160] In some embodiments of this application, the above-mentioned PDCCH monitoring capability information is a set of PDCCH monitoring capability information.

[0161] The terminal device's handling of multiple PDCCH monitoring opportunities during repeated PDCCH transmissions satisfies at least one of the following:

[0162] Multiple PDCCH monitoring opportunities are treated as independent PDCCH monitoring opportunities;

[0163] Multiple PDCCH monitoring opportunities are treated as a whole PDCCH monitoring opportunity.

[0164] The target PDCCH monitoring time among multiple PDCCH monitoring times is treated as the effective PDCCH monitoring time.

[0165] In some embodiments of this application, the aforementioned set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter.

[0166] It should be noted that any one of S1 to S18 indicated by the above PDCCH monitoring capability information is a PDCCH monitoring capability parameter.

[0167] In some embodiments of this application, the target PDCCH monitoring timing includes at least one of the following:

[0168] The first PDCCH monitoring opportunity among the aforementioned multiple PDCCH monitoring opportunities;

[0169] The last PDCCH monitoring opportunity among the aforementioned multiple PDCCH monitoring opportunities;

[0170] The first PDCCH monitoring timing and the last PDCCH monitoring timing mentioned above.

[0171] For example, the PDCCH monitoring capability information is a set of PDCCH monitoring capability information, and multiple MOs that repeat in PDCCH are treated as independent MOs to meet the PDCCH monitoring capability parameters.

[0172] For example, the PDCCH monitoring capability information is a set of PDCCH monitoring capability information, and multiple MOs that repeat PDCCH are treated as a whole as a single MO to meet the PDCCH monitoring capability parameters.

[0173] For example, the PDCCH monitoring capability information is a set of PDCCH monitoring capability information. The target MO among the multiple MOs that repeat PDCCH is treated as an independent and valid MO to satisfy the PDCCH monitoring capability. The target MO is at least one of the following: the first MO among the multiple MOs, the last MO among the multiple MOs, or the first MO and the last MO among the multiple MOs.

[0174] In some embodiments of this application, the above-mentioned PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information, each set of PDCCH monitoring capability information containing at least one PDCCH monitoring capability parameter.

[0175] In some embodiments of this application, one set of PDCCH monitoring capability information is PDCCH monitoring capability information without PDCCH duplication; the other set of PDCCH monitoring capability information is PDCCH monitoring capability information with PDCCH duplication configured; and some PDCCH monitoring capability parameters are different in each of the two sets of PDCCH monitoring capability information.

[0176] For example, the PDCCH monitoring capability information consists of multiple sets of PDCCH monitoring capability information. The MO that is not configured to repeat or not repeat PDCCH corresponds to one set of PDCCH monitoring capability information, and the MO that is configured to repeat or repeat PDCCH corresponds to another set or more sets of PDCCH monitoring capability information. The multiple sets of PDCCH monitoring capability information correspond to at least one different PDCCH monitoring capability parameter.

[0177] In some embodiments of this application, the first blind detection information and the second blind detection information of the terminal device are different.

[0178] In some embodiments of this application, the first blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is configured; the second blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is not configured.

[0179] In some embodiments of this application, the first blind detection information and the second blind detection information are predefined, or the first blind detection information and the first ratio are reported by the terminal device or are predefined.

[0180] In some embodiments of this application, the first ratio is the ratio between the second blind detection information and the first blind detection information.

[0181] For example, when PDCCH repetition is configured, the maximum BD / CCE capability of the symbol group and the maximum BD / CCE capability of the symbol group without PDCCH repetition correspond to different capability parameters R1 and R2, respectively. R1 and R2 are reported / predefined, or R2 = k * R1, where k and R1 are reported by the UE or predefined by the protocol.

[0182] In some embodiments of this application, the third blind detection information and the fourth blind detection information of the terminal device are different.

[0183] In some embodiments of this application, the third blind detection information is the maximum blind detection information corresponding to the symbol group configured with PDCCH repetition, and the fourth blind detection information is the maximum blind detection information corresponding to the symbol group without PDCCH repetition.

[0184] In some embodiments of this application, the aforementioned third blind detection information and the aforementioned fourth blind detection information are predefined, or the aforementioned third blind detection information and the second ratio are predefined.

[0185] In some embodiments of this application, the second ratio is the ratio between the fourth blind detection information and the third blind detection information.

[0186] For example, when PDCCH repetition is configured, the maximum BD / CCE capability of the symbol group with PDCCH repetition and the maximum BD / CCE capability of the symbol group without PDCCH repetition correspond to different capability parameters R1 and R2, respectively. R1 and R2 are reported / predefined, or R2 = k * R1, where k and R1 are reported by the UE or predefined by the protocol.

[0187] It should be noted that for the case of PDCCH repetition, the maximum or minimum gap between each repetition can be reported additionally. For example, the minimum gap can be 0sym, the maximum gap can be 7sym (in which case it is a repetition within an intra-slot), or the minimum gap can be 14sym (in which case it is a repetition between inter-slots).

[0188] It should be noted that, when PDCCH repetition is configured, the configuration information used to configure the search space mentioned above includes at least one of the following parameters:

[0189] The period of the symbol group containing PDCCH MO;

[0190] Temporal offset of the symbol group containing PDCCH MO;

[0191] The bitmap corresponding to the time-domain position of PDCCH MO in the symbol group;

[0192] PDCCH MO is the number of consecutive symbol groups within one period;

[0193] The number of times PDCCH is repeated.

[0194] The communication method provided in this application introduces a new definition method relative to the non-repeating scenario in the case of PDCCH repetition, thereby achieving the benefits of balancing the implementation complexity of terminal devices and improving the flexibility of PDCCH transmission.

[0195] In some embodiments of this application, the above-mentioned PDCCH monitoring capability information is a set of PDCCH monitoring capability information.

[0196] The terminal device's processing of the two PDCCH monitoring timings corresponding to the received two-stage DCI satisfies at least one of the following:

[0197] The two PDCCH monitoring opportunities are treated as independent PDCCH monitoring opportunities;

[0198] The two PDCCH monitoring times are treated as a whole PDCCH monitoring time.

[0199] The target PDCCH monitoring time from the two DCCH monitoring times is treated as the effective PDCCH monitoring time.

[0200] In some embodiments of this application, the two PDCCH monitoring times mentioned above are the PDCCH monitoring times when two PDCCHs are repeatedly transmitted in a two-stage DCI.

[0201] In some embodiments of this application, a set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter.

[0202] It should be noted that any one of S1 to S18 indicated by the above PDCCH monitoring capability information is a PDCCH monitoring capability parameter.

[0203] In some embodiments of this application, the target PDCCH monitoring timing includes at least one of the following:

[0204] The first of the two PDCCH monitoring opportunities mentioned above;

[0205] The last of the two PDCCH monitoring opportunities mentioned above;

[0206] The first PDCCH monitoring timing and the last PDCCH monitoring timing mentioned above.

[0207] For example, the PDCCH monitoring capability information is a set of PDCCH monitoring capability information, and the two PDCCH MOs corresponding to the 2-stage DCI are configured as independent MOs to meet the PDCCH monitoring capability parameters.

[0208] For example, the PDCCH monitoring capability information is a set of PDCCH monitoring capability information. The two PDCCH MOs corresponding to the 2-stage DCI are configured as a whole and processed as a single MO to meet the PDCCH monitoring capability parameters.

[0209] For example, the PDCCH monitoring capability information is a set of PDCCH monitoring capability information. The target MO of the two PDCCH MOs corresponding to the 2-stage DCI is configured as an independent and effective MO to satisfy the PDCCH monitoring capability. The target MO is at least one of the following: the first MO, the last MO.

[0210] In some embodiments of this application, the above-mentioned PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information.

[0211] In some embodiments of this application, the two sets of PDCCH monitoring capability information mentioned above include any one of the following:

[0212] The first set of PDCCH monitoring capability information and the second set of PDCCH monitoring capability information;

[0213] The third set of PDCCH monitoring capability information and the fourth set of PDCCH monitoring capability information.

[0214] In some embodiments of this application, the first set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to single-stage DCI; the second set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to dual-stage DCI.

[0215] In some embodiments of this application, the third set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to the first stage DCI in the dual-stage DCI; the fourth set of PDCCH monitoring timing is the PDCCH monitoring capability information corresponding to the second stage DCI in the dual-stage DCI.

[0216] In some embodiments of this application, each set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter, and the first set of PDCCH monitoring capability information is different from the second set of PDCCH monitoring capability information.

[0217] In some embodiments of this application, each set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter, and the third set of PDCCH monitoring capability information is different from the fourth set of PDCCH monitoring capability information.

[0218] For example, the PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information, 1 st stage PDCCH MO corresponds to a set of PDCCH monitoring capability information, 2 nd stage PDCCH MO corresponds to another set or more sets of PDCCH monitoring capability information, and these multiple sets of PDCCH monitoring capability information correspond to at least one different PDCCH monitoring capability parameter.

[0219] For example, the PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information. A single-stage PDCCH MO corresponds to one set of PDCCH monitoring capability information, and a two-stage PDCCH MO corresponds to one set of PDCCH monitoring capability information.

[0220] It should be noted that, when the two PDCCH monitoring times mentioned above are the PDCCH monitoring times for repeated transmission of two PDCCHs in a two-stage DCI, the configuration information used to configure the search space includes at least one of the following parameters:

[0221] The period of the symbol group containing PDCCH MO;

[0222] Temporal offset of the symbol group containing PDCCH MO;

[0223] The bitmap corresponding to the time-domain position of PDCCH MO in the symbol group;

[0224] PDCCH MO is the number of consecutive symbol groups within one period;

[0225] PDCCH MO type (1) st stage or 2 nd stage);

[0226] The relationship between PDCCH MO.

[0227] The communication method provided in this application embodiment provides the PDCCH monitoring capability or BD / CCE budget for joint monitoring when both single-stage PDCCH MO and 2-stage PDCCH MO exist simultaneously.

[0228] The communication method provided in this application, in the scenario of 2-DCI containing two PDCCHs, introduces a new definition method relative to the 1-stage DCI scenario, achieving the benefits of balancing terminal implementation complexity and improving PDCCH transmission flexibility.

[0229] In the communication method provided in this application embodiment, the terminal device sends PDCCH monitoring capability information with symbol group as the time granularity to the network side device, thereby solving the problem of insufficient flexibility in defining PDCCH monitoring capability information, making the PDCCH monitoring capability information applicable to a variety of application scenarios, and reducing the complexity of terminal device and communication protocol implementation.

[0230] This application provides a communication method, and Figure 4 shows a flowchart of a communication method provided by this application. As shown in Figure 4, the communication method provided by this application may include the following step 301.

[0231] Step 301: The network-side device receives PDCCH monitoring capability information from the terminal device.

[0232] In some embodiments of this application, the above-mentioned PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

[0233] In some embodiments of this application, the above-mentioned PDCCH monitoring capability information is used to indicate at least one of the following S1 to S18:

[0234] S1. The symbol group size N of the above time granularity, where N is a positive integer.

[0235] In some embodiments of this application, N takes the value of at least one item from the set {4,7,14,28,56,112}.

[0236] In some embodiments of this application, the above-mentioned symbol group includes at least two consecutive symbols.

[0237] In some embodiments of this application, the above-mentioned symbol group is determined based on one of the following:

[0238] If the number of symbols F in a time unit is an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group.

[0239] If the number of symbols F in a time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are used as symbol groups.

[0240] If the number of symbols F in a time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are used as the first symbol group. The first symbol group is not configured with PDCCH monitoring timing.

[0241] S2. The number of symbols L of the control resource set that the terminal device supports configuring, where L is a positive integer.

[0242] In some embodiments of this application, the value of L is at least one item in the set {1,2,3,6,12}.

[0243] S3, PDCCH monitoring timing is the configurable symbol position in each symbol group.

[0244] S4, PDCCH monitoring timing is the configurable starting symbol position in each symbol group;

[0245] In some embodiments of this application, the symbol positions for configurable PDCCH monitoring timing are the same in different symbol groups.

[0246] In some embodiments of this application, the configurable starting symbol position in the above symbol group is the M1th symbol in the symbol group, and the configurable ending symbol position in the symbol group is the M2th symbol in the symbol group, where M1 and M2 are positive integers.

[0247] In some embodiments of this application, the configurable symbol positions in the above-mentioned symbol group satisfy at least one of the following:

[0248] M1 is predefined;

[0249] M2 is predefined;

[0250] The value of M2 is at least one item in the set {2, 13, N-1};

[0251] (M1,M2) takes at least one value from the set {(0,13),(14,27),(28,41),(42,55)}.

[0252] S5. The maximum number of PDCCH monitoring time spans that can be configured in each of the above symbol groups.

[0253] In some embodiments of this application, the PDCCH monitoring timing span is determined based on the bitmap of the symbol group.

[0254] S6. The maximum number of symbols that can be configured for a single PDCCH monitoring time span in each of the above symbol groups.

[0255] S7. In any symbol group, if the maximum number of configurable PDCCH monitoring time spans is greater than 1, the minimum interval number of adjacent PDCCH monitoring time spans that can be configured in any symbol group.

[0256] S8. The number of configurable symbol positions in each of the above symbol groups.

[0257] S9. Whether the PDCCH monitoring timing for each of the above symbol groups can cross time slot boundaries.

[0258] S10. Whether the position of the PDCCH monitoring time span is consistent between different symbol groups.

[0259] S11. Whether the PDCCH monitoring time span of each of the above symbol groups can cross the time slot boundary.

[0260] S12. Whether the time slot between the monitoring time spans of different symbol groups is greater than or equal to the symbol group size N.

[0261] S13. Whether the interval between two adjacent downlink control information (DCI) is greater than or equal to the preset number of symbols.

[0262] In some embodiments of this application, the aforementioned preset number of symbols is predefined.

[0263] In some embodiments of this application, the two adjacent DCIs described above satisfy at least one of the following:

[0264] Two adjacent DCIs are downlink authorized DCIs;

[0265] Two adjacent DCIs are uplink authorized DCIs;

[0266] Between two adjacent DCIs, one DCI is the downlink grant DCI, and the other DCI is the uplink grant DCI.

[0267] S14. PDCCH monitoring is prohibited across symbol groups.

[0268] S15, the maximum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH monitoring opportunities of repeated PDCCH transmission.

[0269] S16, the minimum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH monitoring opportunities of repeated PDCCH transmission.

[0270] S17. The maximum interval between two adjacent PDCCH monitoring times in multiple PDCCH monitoring times of a dual-stage PDCCH.

[0271] S18. The minimum interval between two adjacent PDCCH monitoring times in a dual-stage PDCCH.

[0272] It should be noted that the explanation of the PDCCH monitoring capability information in step 301 above can be found in the detailed explanation of the PDCCH monitoring capability information and related information in step 201 above. To avoid repetition, it will not be repeated here.

[0273] In some embodiments of this application, as shown in FIG4 and FIG5, the communication method provided in the embodiments of this application may further include the following step 302.

[0274] Step 302: The network-side device sends configuration information to the terminal device.

[0275] In some embodiments of this application, the above configuration information is used to configure the search space.

[0276] In some embodiments of this application, the above configuration information includes at least one of the following:

[0277] Temporal location information that can be monitored by PDCCH in the search space;

[0278] Blind search information in the search space;

[0279] Search space for CCE information.

[0280] In some embodiments of this application, the aforementioned time-domain location information includes at least one of the following:

[0281] The first number of symbol groups corresponding to one cycle of PDCCH monitoring timing;

[0282] The time domain offset of PDCCH monitoring within the corresponding symbol group;

[0283] The PDCCH monitoring timing corresponds to the bitmap at the time domain position of the corresponding symbol group;

[0284] PDCCH monitoring timing is based on the second number of consecutive symbol groups within a cycle;

[0285] The number of times PDCCH is repeated;

[0286] Types of PDCCH monitoring timing;

[0287] The correlation between PDCCH monitoring timing and other factors.

[0288] In some embodiments of this application, the types of PDCCH monitoring timing mentioned above include at least one of the following:

[0289] Timing of PDCCH monitoring in the first phase;

[0290] Timing of PDCCH monitoring in the second phase;

[0291] Timing of two-stage PDCCH monitoring;

[0292] Single-stage PDCCH monitoring timing.

[0293] It should be noted that the relevant explanations of the configuration information in step 302 above can be found in the detailed explanations of the configuration information and related information in steps 202 and 203 above. To avoid repetition, they will not be repeated here.

[0294] In some embodiments of this application, the above-mentioned PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information, each set of PDCCH monitoring capability information containing at least one PDCCH monitoring capability parameter.

[0295] In some embodiments of this application, one set of PDCCH monitoring capability information is PDCCH monitoring capability information without PDCCH duplication; the other set of PDCCH monitoring capability information is PDCCH monitoring capability information with PDCCH duplication configured; and some PDCCH monitoring capability parameters are different in each of the two sets of PDCCH monitoring capability information.

[0296] It should be noted that any one of S1 to S18 indicated by the above PDCCH monitoring capability information is a PDCCH monitoring capability parameter.

[0297] In some embodiments of this application, the first blind detection information and the second blind detection information of the terminal device are different.

[0298] In some embodiments of this application, the first blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is configured; the second blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is not configured.

[0299] In some embodiments of this application, the first blind detection information and the second blind detection information are reported by the terminal device or predefined, or the first blind detection information and the first ratio are reported by the terminal device or predefined.

[0300] In some embodiments of this application, the first ratio is the ratio between the second blind detection information and the first blind detection information.

[0301] In some embodiments of this application, the third blind detection information and the fourth blind detection information of the terminal device are different.

[0302] In some embodiments of this application, the third blind detection information is the maximum blind detection information corresponding to the symbol group configured with PDCCH repetition, and the fourth blind detection information is the maximum blind detection information corresponding to the symbol group without PDCCH repetition.

[0303] In some embodiments of this application, the aforementioned third blind detection information and the aforementioned fourth blind detection information are reported by the terminal device or predefined, or the aforementioned third blind detection information and the second ratio are reported by the terminal device or predefined.

[0304] In some embodiments of this application, the second ratio is the ratio between the fourth blind detection information and the third blind detection information.

[0305] In some embodiments of this application, the above-mentioned PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information.

[0306] In some embodiments of this application, the two sets of PDCCH monitoring capability information mentioned above include any one of the following:

[0307] The first set of PDCCH monitoring capability information and the second set of PDCCH monitoring capability information;

[0308] The third set of PDCCH monitoring capability information and the fourth set of PDCCH monitoring capability information.

[0309] In some embodiments of this application, the first set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to single-stage DCI; the second set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to dual-stage DCI.

[0310] In some embodiments of this application, the third set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to the first stage DCI in the dual-stage DCI; the fourth set of PDCCH monitoring timing is the PDCCH monitoring capability information corresponding to the second stage DCI in the dual-stage DCI.

[0311] In some embodiments of this application, each set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter, and the first set of PDCCH monitoring capability information is different from the second set of PDCCH monitoring capability information.

[0312] In some embodiments of this application, each set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter. The third set of PDCCH monitoring capability information and the fourth set of PDCCH monitoring capability information have different PDCCH monitoring capability parameters.

[0313] It should be noted that the explanations of various blind detection information and various PDCCH monitoring capability information in this embodiment can be found in the detailed explanations of various blind detection information and various PDCCH monitoring capability information in steps 201 to 203 above. To avoid repetition, they will not be repeated here.

[0314] In the communication method provided in this application embodiment, since the PDCCH monitoring capability information received by the network-side device from the terminal device is PDCCH monitoring capability information with symbol group as the time granularity, the problem of insufficient flexibility in defining PDCCH monitoring capability information is solved, making the PDCCH monitoring capability information applicable to a variety of application scenarios and reducing the complexity of terminal device and communication protocol implementation.

[0315] This application provides a communication method, and Figure 6 shows a flowchart of a communication method provided by this application. As shown in Figure 6, the communication method provided by this application may include the following steps 401 to 405.

[0316] Step 401: The terminal device sends PDCCH monitoring capability information to the network-side device.

[0317] Step 402: The network-side device receives the PDCCH monitoring capability information sent by the terminal device.

[0318] Step 403: The network-side device sends configuration information to the terminal device.

[0319] Step 404: The terminal device receives the configuration information sent by the network-side device.

[0320] Step 405: The terminal device monitors the PDCCH based on the above configuration information and PDCCH monitoring capability information.

[0321] It should be noted that the explanations of the PDCCH monitoring capability information in steps 401 and 402 above can be found in the detailed explanation of the PDCCH monitoring capability information and related information in step 201 above. To avoid repetition, they will not be repeated here. Similarly, the explanations of the configuration information in steps 403 and 404 above can be found in the detailed explanations of the configuration information and related information in steps 202 and 203 above. To avoid repetition, they will not be repeated here.

[0322] The communication method provided in this application embodiment sends PDCCH monitoring capability information to the network-side device in the form of symbol groups as the time granularity, thereby solving the problem of insufficient flexibility in the definition of PDCCH monitoring capability information, making the PDCCH monitoring capability information applicable to various application scenarios, and reducing the complexity of terminal device and communication protocol implementation.

[0323] The communication method provided in this application introduces the granularity of reportable symbol groups when defining PDCCH monitoring capabilities, thereby solving the problem of insufficient flexibility in defining PDCCH monitoring capabilities. This makes it applicable to various application scenarios and reduces terminal implementation and protocol complexity. Furthermore, a new definition method is proposed for scenarios involving PDCCH repetition and 2-stage DCI to balance terminal implementation complexity and improve PDCCH transmission flexibility.

[0324] The communication method provided in this application can be executed by a communication device. This application uses the example of a communication device executing the communication method to illustrate the communication device provided in this application.

[0325] This application provides a communication device. As an example, the communication device may be a communication equipment or a component within a communication equipment, such as a chip. The communication equipment may be a terminal device, a network-side device, or a server, etc. For example, the terminal device may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0326] The communication device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0327] Specifically, referring to Figure 7, when the communication device is a terminal device or a component in a terminal device, the communication device 700 includes:

[0328] The sending module 701 is used to send PDCCH monitoring capability information to the network-side device. The PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

[0329] In some embodiments of this application, the PDCCH monitoring capability information is used to indicate at least one of the following:

[0330] The symbol group size N of the time granularity is a positive integer;

[0331] The communication device supports the configuration of a control resource set with a number of symbols L, where L is a positive integer;

[0332] PDCCH monitoring timing is available at configurable symbol locations within each symbol group;

[0333] PDCCH monitoring timing is the configurable starting symbol position in each symbol group;

[0334] The maximum number of configurable PDCCH monitoring time spans in each symbol group;

[0335] The maximum number of symbols that can be configured for a single PDCCH monitoring time span in each symbol group;

[0336] In any symbol group, if the maximum number of configurable PDCCH monitoring timing spans in the configurable symbol positions is greater than 1, the minimum interval number of adjacent PDCCH monitoring timing spans in the configurable symbol positions in the symbol group.

[0337] The number of configurable symbol positions in each symbol group;

[0338] Whether the PDCCH monitoring timing for each symbol group can cross time slot boundaries;

[0339] Whether the timing span of PDCCH monitoring is consistent across different symbol groups;

[0340] Whether the PDCCH monitoring time span of each symbol group can cross the time slot boundary;

[0341] Whether the time slot between the monitoring timing spans of different symbol groups is greater than or equal to the symbol group size N;

[0342] Whether the interval between two adjacent downlink control information (DCI) is greater than or equal to a preset number of symbols, where the preset number of symbols is predefined;

[0343] PDCCH monitoring should not be performed across symbol groups;

[0344] The maximum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH repeated transmissions;

[0345] The minimum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH repeated transmissions;

[0346] The maximum interval between two adjacent PDCCH monitoring times in a two-stage PDCCH;

[0347] The minimum interval between two adjacent PDCCH monitoring times in a two-stage PDCCH.

[0348] In some embodiments of this application, N takes the value of at least one item from the set {4,7,14,28,56,112}.

[0349] In some embodiments of this application, the symbol positions for configurable PDCCH monitoring timing are the same in different symbol groups.

[0350] In some embodiments of this application, the configurable starting symbol position in the symbol group is the M1th symbol in the symbol group, and the configurable ending symbol position in the symbol group is the M2th symbol in the symbol group, where M1 and M2 are positive integers;

[0351] The configurable symbol positions in the symbol group satisfy at least one of the following:

[0352] M1 is predefined;

[0353] M2 is predefined;

[0354] The value of M2 is at least one item in the set {2, 13, N-1};

[0355] (M1,M2) takes at least one value from the set {(0,13),(14,27),(28,41),(42,55)}.

[0356] In some embodiments of this application, the value of L is at least one item in the set {1,2,3,6,12}.

[0357] In some embodiments of this application, the two adjacent DCIs satisfy at least one of the following:

[0358] The two adjacent DCIs are downlink authorized DCIs;

[0359] The two adjacent DCIs are uplink authorized DCIs;

[0360] One of the two adjacent DCIs is the downlink license DCI, and the other of the two adjacent DCIs is the uplink license DCI.

[0361] In some embodiments of this application, the PDCCH monitoring timing span is determined based on the bitmap of the symbol group.

[0362] In some embodiments of this application, the symbol group comprises at least two consecutive symbols.

[0363] In some embodiments of this application, the symbol group is determined based on one of the following:

[0364] If the number of symbols F in a time unit is an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group.

[0365] If the number of symbols F in the time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are used as the symbol group.

[0366] If the number of symbols F in the time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are taken as the first symbol group. The first symbol group is not configured with PDCCH monitoring timing.

[0367] In some embodiments of this application, as shown in FIG7 and FIG8, the communication device 700 may further include:

[0368] The receiving module 702 is configured to receive configuration information from the network-side device, the configuration information being used to configure the search space;

[0369] The processing module 703 is used to monitor the PDCCH based on the configuration information and the PDCCH monitoring capability information.

[0370] In some embodiments of this application, the configuration information includes at least one of the following:

[0371] The search space contains temporal location information for PDCCH monitoring;

[0372] Blind detection information of the search space;

[0373] The control channel element information of the search space.

[0374] In some embodiments of this application, the time-domain location information includes at least one of the following:

[0375] The first number of symbol groups corresponding to one cycle of PDCCH monitoring timing;

[0376] The time domain offset of PDCCH monitoring within the corresponding symbol group;

[0377] The PDCCH monitoring timing corresponds to the bitmap at the time domain position of the corresponding symbol group;

[0378] PDCCH monitoring timing is based on the second number of consecutive symbol groups within a cycle;

[0379] The number of times PDCCH is repeated;

[0380] Types of PDCCH monitoring timing;

[0381] The correlation between PDCCH monitoring timing and other factors.

[0382] In some embodiments of this application, the type of PDCCH monitoring timing includes at least one of the following:

[0383] Timing of PDCCH monitoring in the first phase;

[0384] Timing of PDCCH monitoring in the second phase;

[0385] Timing of two-stage PDCCH monitoring;

[0386] Single-stage PDCCH monitoring timing.

[0387] In some embodiments of this application, the PDCCH monitoring capability information is a set of PDCCH monitoring capability information;

[0388] Referring to Figure 7 and Figure 8, the communication device 700 may further include a processing module 703, wherein the processing module 703 processes multiple PDCCH monitoring opportunities of repeatedly transmitted received PDCCHs to satisfy at least one of the following:

[0389] Each of the multiple PDCCH monitoring opportunities is treated as an independent PDCCH monitoring opportunity.

[0390] The multiple PDCCH monitoring opportunities are treated as a whole PDCCH monitoring opportunity.

[0391] The target PDCCH monitoring time among the multiple PDCCH monitoring times is treated as a valid PDCCH monitoring time.

[0392] In some embodiments of this application, the timing of the target PDCCH monitoring includes at least one of the following:

[0393] The first PDCCH monitoring time among the multiple PDCCH monitoring times;

[0394] The last PDCCH monitoring time among the multiple PDCCH monitoring times;

[0395] The first PDCCH monitoring timing and the last PDCCH monitoring timing.

[0396] In some embodiments of this application, the PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information, each set of PDCCH monitoring capability information containing at least one PDCCH monitoring capability parameter;

[0397] Among them, one set of PDCCH monitoring capability information is PDCCH monitoring capability information without PDCCH duplication configured; the other set of PDCCH monitoring capability information is PDCCH monitoring capability information with PDCCH duplication configured; some PDCCH monitoring capability parameters are different in each set of PDCCH monitoring capability information.

[0398] In some embodiments of this application, the first blind detection information and the second blind detection information of the communication device are different;

[0399] Wherein, the first blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is configured; the second blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is not configured.

[0400] In some embodiments of this application, the first blind detection information and the second blind detection information are predefined, or the first blind detection information and the first ratio are predefined, and the first ratio is the ratio between the second blind detection information and the first blind detection information.

[0401] In some embodiments of this application, the third blind detection information and the fourth blind detection information of the communication device are different;

[0402] The third blind detection information is the maximum blind detection information corresponding to the symbol group with PDCCH repetition configured, and the fourth blind detection information is the maximum blind detection information corresponding to the symbol group without PDCCH repetition configured.

[0403] In some embodiments of this application, the third blind detection information and the fourth blind detection information are predefined, or the third blind detection information and the second ratio are predefined, and the second ratio is the ratio between the fourth blind detection information and the third blind detection information.

[0404] In some embodiments of this application, the PDCCH monitoring capability information is a set of PDCCH monitoring capability information;

[0405] Referring to Figure 7 and Figure 8, the communication device 700 may further include a processing module 703, wherein the processing module 703 processes the two PDCCH monitoring opportunities corresponding to the received dual-stage DCI to satisfy at least one of the following:

[0406] The two PDCCH monitoring opportunities are treated as independent PDCCH monitoring opportunities;

[0407] The two PDCCH monitoring opportunities are treated as a whole PDCCH monitoring opportunity.

[0408] The target PDCCH monitoring time among the two DCCH monitoring times is treated as a valid PDCCH monitoring time.

[0409] The two PDCCH monitoring timings are the PDCCH monitoring timings during the repeated transmission of two PDCCHs in the two-stage DCI.

[0410] In some embodiments of this application, the timing of the target PDCCH monitoring includes at least one of the following:

[0411] The first of the two PDCCH monitoring opportunities;

[0412] The last of the two PDCCH monitoring opportunities;

[0413] The first PDCCH monitoring timing and the last PDCCH monitoring timing.

[0414] In some embodiments of this application, the PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information;

[0415] The two sets of PDCCH monitoring capability information include any one of the following:

[0416] The first set of PDCCH monitoring capability information and the second set of PDCCH monitoring capability information;

[0417] The third set of PDCCH monitoring capability information and the fourth set of PDCCH monitoring capability information;

[0418] The first set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to single-stage DCI; the second set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to dual-stage DCI.

[0419] The third set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to the first stage DCI in the dual-stage DCI; the fourth set of PDCCH monitoring timing is the PDCCH monitoring capability information corresponding to the second stage DCI in the dual-stage DCI.

[0420] In some embodiments of this application, each set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter, and the first set of PDCCH monitoring capability information is different from the second set of PDCCH monitoring capability information in terms of at least one PDCCH monitoring capability parameter.

[0421] In some embodiments of this application, each set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter, and the third set of PDCCH monitoring capability information is different from at least one PDCCH monitoring capability parameter in the fourth set of PDCCH monitoring capability information.

[0422] In the communication device provided in this application embodiment, the PDCCH monitoring capability information sent by the communication device to the network-side device is PDCCH monitoring capability information with symbol group as the time granularity, thereby solving the problem of insufficient flexibility in the definition of PDCCH monitoring capability information, making the PDCCH monitoring capability information applicable to a variety of application scenarios, and reducing the complexity of the communication device and communication protocol implementation.

[0423] The communication device provided in this application embodiment can implement the various processes implemented by the terminal device in the method embodiments of Figures 2, 3, and 6, and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0424] Referring to Figure 9, when the communication device is a network-side device or a component within a network-side device, the communication device 900 includes:

[0425] The receiving module 901 is used to receive PDCCH monitoring capability information from the terminal device, wherein the PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

[0426] In some embodiments of this application, as shown in FIG9 and FIG10, the communication device 900 may further include:

[0427] The sending module 902 is used to send configuration information to the terminal device, the configuration information being used to configure the search space;

[0428] The configuration information includes at least one of the following:

[0429] The search space contains temporal location information for PDCCH monitoring;

[0430] Blind detection information of the search space;

[0431] The control channel element information of the search space.

[0432] In some embodiments of this application, the time-domain location information includes at least one of the following:

[0433] The first number of symbol groups corresponding to one cycle of PDCCH monitoring timing;

[0434] The time domain offset of PDCCH monitoring within the corresponding symbol group;

[0435] The PDCCH monitoring timing corresponds to the bitmap at the time domain position of the corresponding symbol group;

[0436] PDCCH monitoring timing is based on the second number of consecutive symbol groups within a cycle;

[0437] The number of times PDCCH is repeated;

[0438] Types of PDCCH monitoring timing;

[0439] The correlation between PDCCH monitoring timing and other factors.

[0440] In some embodiments of this application, the type of PDCCH monitoring timing includes at least one of the following:

[0441] Timing of PDCCH monitoring in the first phase;

[0442] Timing of PDCCH monitoring in the second phase;

[0443] Timing of two-stage PDCCH monitoring;

[0444] Single-stage PDCCH monitoring timing.

[0445] In some embodiments of this application, the PDCCH monitoring capability information is used to indicate at least one of the following:

[0446] The symbol group size N of the time granularity is a positive integer;

[0447] The terminal device supports the configuration of the number of symbols L of the control resource set, where L is a positive integer;

[0448] PDCCH monitoring timing is available at configurable symbol locations within each symbol group;

[0449] PDCCH monitoring timing is the configurable starting symbol position in each symbol group;

[0450] The maximum number of configurable PDCCH monitoring time spans in each symbol group;

[0451] The maximum number of symbols that can be configured for a single PDCCH monitoring time span in each symbol group;

[0452] In any symbol group, if the maximum number of configurable PDCCH monitoring timing spans in the configurable symbol positions is greater than 1, the minimum interval number of adjacent PDCCH monitoring timing spans in the configurable symbol positions in the symbol group.

[0453] The number of configurable symbol positions in each symbol group;

[0454] Whether the PDCCH monitoring timing for each symbol group can cross time slot boundaries;

[0455] Whether the timing span of PDCCH monitoring is consistent across different symbol groups;

[0456] Whether the PDCCH monitoring time span of each symbol group can cross the time slot boundary;

[0457] Whether the time slot between the monitoring timing spans of different symbol groups is greater than or equal to the symbol group size N;

[0458] Whether the interval between two adjacent downlink control information (DCI) is greater than or equal to a preset number of symbols, where the preset number of symbols is predefined;

[0459] PDCCH monitoring should not be performed across symbol groups;

[0460] The maximum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH repeated transmissions;

[0461] The minimum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH repeated transmissions;

[0462] The maximum interval between two adjacent PDCCH monitoring times in a two-stage PDCCH;

[0463] The minimum interval between two adjacent PDCCH monitoring times in a two-stage PDCCH.

[0464] In some embodiments of this application, N takes the value of at least one item from the set {4,7,14,28,56,112}.

[0465] In some embodiments of this application, the symbol positions for configurable PDCCH monitoring timing are the same in different symbol groups.

[0466] In some embodiments of this application, the configurable starting symbol position in the symbol group is the M1th symbol in the symbol group, and the configurable ending symbol position in the symbol group is the M2th symbol in the symbol group, where M1 and M2 are positive integers;

[0467] The configurable symbol positions in the symbol group satisfy at least one of the following:

[0468] M1 is predefined;

[0469] M2 is predefined;

[0470] The value of M2 is at least one item in the set {2, 13, N-1};

[0471] (M1,M2) takes at least one value from the set {(0,13),(14,27),(28,41),(42,55)}.

[0472] In some embodiments of this application, the value of L is at least one item in the set {1,2,3,6,12}.

[0473] In some embodiments of this application, the two adjacent DCIs satisfy at least one of the following:

[0474] The two adjacent DCIs are downlink authorized DCIs;

[0475] The two adjacent DCIs are uplink authorized DCIs;

[0476] One of the two adjacent DCIs is the downlink license DCI, and the other of the two adjacent DCIs is the uplink license DCI.

[0477] In some embodiments of this application, the PDCCH monitoring timing span is determined based on the bitmap of the symbol group.

[0478] In some embodiments of this application, the symbol group comprises at least two consecutive symbols.

[0479] In some embodiments of this application, the symbol group is determined based on one of the following:

[0480] If the number of symbols F in a time unit is an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group.

[0481] If the number of symbols F in the time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are used as the symbol group.

[0482] If the number of symbols F in the time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are taken as the first symbol group. The first symbol group is not configured with PDCCH monitoring timing.

[0483] In some embodiments of this application, the PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information, each set of PDCCH monitoring capability information containing at least one PDCCH monitoring capability parameter;

[0484] Among them, one set of PDCCH monitoring capability information is PDCCH monitoring capability information without PDCCH duplication configured; the other set of PDCCH monitoring capability information is PDCCH monitoring capability information with PDCCH duplication configured; some PDCCH monitoring capability parameters are different in each set of PDCCH monitoring capability information.

[0485] In some embodiments of this application, the first blind detection information and the second blind detection information of the terminal device are different;

[0486] Wherein, the first blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is configured; the second blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is not configured.

[0487] In some embodiments of this application, the first blind detection information and the second blind detection information are reported by the terminal device or predefined, or the first blind detection information and the first ratio are reported by the terminal device or predefined, and the first ratio is the ratio between the second blind detection information and the first blind detection information.

[0488] In some embodiments of this application, the third blind detection information and the fourth blind detection information of the terminal device are different;

[0489] The third blind detection information is the maximum blind detection information corresponding to the symbol group with PDCCH repetition configured, and the fourth blind detection information is the maximum blind detection information corresponding to the symbol group without PDCCH repetition configured.

[0490] In some embodiments of this application, the third blind detection information and the fourth blind detection information are reported by the terminal device or predefined, or the third blind detection information and the second ratio are reported by the terminal device or predefined, and the second ratio is the ratio between the fourth blind detection information and the third blind detection information.

[0491] In some embodiments of this application, the PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information;

[0492] The two sets of PDCCH monitoring capability information include any one of the following:

[0493] The first set of PDCCH monitoring capability information and the second set of PDCCH monitoring capability information;

[0494] The third set of PDCCH monitoring capability information and the fourth set of PDCCH monitoring capability information;

[0495] The first set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to single-stage DCI; the second set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to dual-stage DCI.

[0496] The third set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to the first stage DCI in the dual-stage DCI; the fourth set of PDCCH monitoring timing is the PDCCH monitoring capability information corresponding to the second stage DCI in the dual-stage DCI.

[0497] In some embodiments of this application, each set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter, and the first set of PDCCH monitoring capability information is different from the second set of PDCCH monitoring capability information in terms of at least one PDCCH monitoring capability parameter.

[0498] In some embodiments of this application, each set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter, and the third set of PDCCH monitoring capability information is different from at least one PDCCH monitoring capability parameter in the fourth set of PDCCH monitoring capability information.

[0499] In the communication device provided in this application embodiment, since the PDCCH monitoring capability information received by the communication device from the terminal device is PDCCH monitoring capability information with symbol group as the time granularity, the problem of insufficient flexibility in defining PDCCH monitoring capability information is solved, so that the PDCCH monitoring capability information can be applied to a variety of application scenarios, and the complexity of terminal device and communication protocol implementation is reduced.

[0500] The communication device provided in this application embodiment can implement the various processes implemented by the network-side device in the method embodiments of Figures 4 to 6, and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0501] As shown in Figure 11, this application embodiment also provides a communication device 1100, including a processor 1101 and a memory 1102. The memory 1102 stores a program or instructions that can run on the processor 1101. For example, when the communication device 1100 is a terminal device, the program or instructions executed by the processor 1101 implement the various steps of the above-described communication method embodiment and achieve the same technical effect. When the communication device 1100 is a network-side device, the program or instructions executed by the processor 1101 implement the various steps of the above-described communication method embodiment and achieve the same technical effect. To avoid repetition, this will not be described again here.

[0502] This application also provides a terminal device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps executed by the terminal device in the method embodiments shown in Figures 2, 3, and 6. This terminal device embodiment corresponds to the above-described terminal-side method embodiments. All implementation processes and methods of the above-described method embodiments can be applied to this terminal device embodiment and achieve the same technical effects. The terminal device can be the communication device shown in Figure 7 or Figure 8. Specifically, Figure 12 is a schematic diagram of the hardware structure of a terminal device implementing an embodiment of this application.

[0503] The terminal device 1200 includes, but is not limited to, at least some of the following components: radio frequency unit 1201, network module 1202, audio output unit 1203, input unit 1204, sensor 1205, display unit 1206, user input unit 1207, interface unit 1208, memory 1209, and processor 1210.

[0504] Those skilled in the art will understand that the terminal device 1200 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 1210 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal device structure shown in Figure 12 does not constitute a limitation on the terminal device. The terminal device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0505] It should be understood that, in this embodiment, the input unit 1204 may include a graphics processor 12041 and a microphone 12042. The graphics processor 12041 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 1206 may include a display panel 12061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1207 includes a touch panel 12071 and at least one of other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include a touch detection device and a touch controller. Other input devices 12072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0506] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1201 can transmit it to the processor 1210 for processing; in addition, the radio frequency unit 1201 can send uplink data to the network-side device. Typically, the radio frequency unit 1201 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0507] The memory 1209 can be used to store software programs or instructions, as well as various data. The memory 1209 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first 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 1209 may include volatile memory or non-volatile memory. 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. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1209 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0508] Processor 1210 may include one or more processing units; optionally, processor 1210 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1210.

[0509] The radio frequency unit 1201 is used to send PDCCH monitoring capability information to the network-side equipment. The PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

[0510] In some embodiments of this application, the PDCCH monitoring capability information is used to indicate at least one of the following:

[0511] The symbol group size N of the time granularity is a positive integer;

[0512] The terminal device supports the configuration of the number of symbols L of the control resource set, where L is a positive integer;

[0513] PDCCH monitoring timing is available at configurable symbol locations within each symbol group;

[0514] PDCCH monitoring timing is the configurable starting symbol position in each symbol group;

[0515] The maximum number of configurable PDCCH monitoring time spans in each symbol group;

[0516] The maximum number of symbols that can be configured for a single PDCCH monitoring time span in each symbol group;

[0517] In any symbol group, if the maximum number of configurable PDCCH monitoring timing spans in the configurable symbol positions is greater than 1, the minimum interval number of adjacent PDCCH monitoring timing spans in the configurable symbol positions in the symbol group.

[0518] The number of configurable symbol positions in each symbol group;

[0519] Whether the PDCCH monitoring timing for each symbol group can cross time slot boundaries;

[0520] Whether the timing span of PDCCH monitoring is consistent across different symbol groups;

[0521] Whether the PDCCH monitoring time span of each symbol group can cross the time slot boundary;

[0522] Whether the time slot between the monitoring timing spans of different symbol groups is greater than or equal to the symbol group size N;

[0523] Whether the interval between two adjacent downlink control information (DCI) is greater than or equal to a preset number of symbols, where the preset number of symbols is predefined;

[0524] PDCCH monitoring should not be performed across symbol groups;

[0525] The maximum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH repeated transmissions;

[0526] The minimum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH repeated transmissions;

[0527] The maximum interval between two adjacent PDCCH monitoring times in a two-stage PDCCH;

[0528] The minimum interval between two adjacent PDCCH monitoring times in a two-stage PDCCH.

[0529] In some embodiments of this application, N takes the value of at least one item from the set {4,7,14,28,56,112}.

[0530] In some embodiments of this application, the symbol positions for configurable PDCCH monitoring timing are the same in different symbol groups.

[0531] In some embodiments of this application, the configurable starting symbol position in the symbol group is the M1th symbol in the symbol group, and the configurable ending symbol position in the symbol group is the M2th symbol in the symbol group, where M1 and M2 are positive integers;

[0532] The configurable symbol positions in the symbol group satisfy at least one of the following:

[0533] M1 is predefined;

[0534] M2 is predefined;

[0535] The value of M2 is at least one item in the set {2, 13, N-1};

[0536] (M1,M2) takes at least one value from the set {(0,13),(14,27),(28,41),(42,55)}.

[0537] In some embodiments of this application, the value of L is at least one item in the set {1,2,3,6,12}.

[0538] In some embodiments of this application, the two adjacent DCIs satisfy at least one of the following:

[0539] The two adjacent DCIs are downlink authorized DCIs;

[0540] The two adjacent DCIs are uplink authorized DCIs;

[0541] One of the two adjacent DCIs is the downlink license DCI, and the other of the two adjacent DCIs is the uplink license DCI.

[0542] In some embodiments of this application, the PDCCH monitoring timing span is determined based on the bitmap of the symbol group.

[0543] In some embodiments of this application, the symbol group comprises at least two consecutive symbols.

[0544] In some embodiments of this application, the symbol group is determined based on one of the following:

[0545] If the number of symbols F in a time unit is an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group.

[0546] If the number of symbols F in the time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are used as the symbol group.

[0547] If the number of symbols F in the time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are taken as the first symbol group. The first symbol group is not configured with PDCCH monitoring timing.

[0548] In some embodiments of this application, the radio frequency unit 1201 is further configured to receive configuration information from the network-side device, the configuration information being used to configure the search space; the processor 1210 is configured to monitor the PDCCH based on the configuration information and the PDCCH monitoring capability information.

[0549] In some embodiments of this application, the configuration information includes at least one of the following:

[0550] The search space contains temporal location information for PDCCH monitoring;

[0551] Blind detection information of the search space;

[0552] The control channel element information of the search space.

[0553] In some embodiments of this application, the time-domain location information includes at least one of the following:

[0554] The first number of symbol groups corresponding to one cycle of PDCCH monitoring timing;

[0555] The time domain offset of PDCCH monitoring within the corresponding symbol group;

[0556] The PDCCH monitoring timing corresponds to the bitmap at the time domain position of the corresponding symbol group;

[0557] PDCCH monitoring timing is based on the second number of consecutive symbol groups within a cycle;

[0558] The number of times PDCCH is repeated;

[0559] Types of PDCCH monitoring timing;

[0560] The correlation between PDCCH monitoring timing and other factors.

[0561] In some embodiments of this application, the type of PDCCH monitoring timing includes at least one of the following:

[0562] Timing of PDCCH monitoring in the first phase;

[0563] Timing of PDCCH monitoring in the second phase;

[0564] Timing of two-stage PDCCH monitoring;

[0565] Single-stage PDCCH monitoring timing.

[0566] In some embodiments of this application, the PDCCH monitoring capability information is a set of PDCCH monitoring capability information;

[0567] The terminal device's processing of multiple PDCCH monitoring opportunities during repeated PDCCH transmissions satisfies at least one of the following:

[0568] Each of the multiple PDCCH monitoring opportunities is treated as an independent PDCCH monitoring opportunity.

[0569] The multiple PDCCH monitoring opportunities are treated as a whole PDCCH monitoring opportunity.

[0570] The target PDCCH monitoring time among the multiple PDCCH monitoring times is treated as a valid PDCCH monitoring time.

[0571] In some embodiments of this application, the timing of the target PDCCH monitoring includes at least one of the following:

[0572] The first PDCCH monitoring time among the multiple PDCCH monitoring times;

[0573] The last PDCCH monitoring time among the multiple PDCCH monitoring times;

[0574] The first PDCCH monitoring timing and the last PDCCH monitoring timing.

[0575] In some embodiments of this application, the PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information, each set of PDCCH monitoring capability information containing at least one PDCCH monitoring capability parameter;

[0576] Among them, one set of PDCCH monitoring capability information is PDCCH monitoring capability information without PDCCH duplication configured; the other set of PDCCH monitoring capability information is PDCCH monitoring capability information with PDCCH duplication configured; some PDCCH monitoring capability parameters are different in each set of PDCCH monitoring capability information.

[0577] In some embodiments of this application, the first blind detection information and the second blind detection information of the terminal device are different;

[0578] Wherein, the first blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is configured; the second blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is not configured.

[0579] In some embodiments of this application, the first blind detection information and the second blind detection information are predefined, or the first blind detection information and the first ratio are predefined, and the first ratio is the ratio between the second blind detection information and the first blind detection information.

[0580] In some embodiments of this application, the third blind detection information and the fourth blind detection information of the terminal device are different;

[0581] The third blind detection information is the maximum blind detection information corresponding to the symbol group with PDCCH repetition configured, and the fourth blind detection information is the maximum blind detection information corresponding to the symbol group without PDCCH repetition configured.

[0582] In some embodiments of this application, the third blind detection information and the fourth blind detection information are predefined, or the third blind detection information and the second ratio are predefined, and the second ratio is the ratio between the fourth blind detection information and the third blind detection information.

[0583] In some embodiments of this application, the PDCCH monitoring capability information is a set of PDCCH monitoring capability information;

[0584] The terminal device's processing of the two PDCCH monitoring opportunities corresponding to the received two-stage DCI satisfies at least one of the following:

[0585] The two PDCCH monitoring opportunities are treated as independent PDCCH monitoring opportunities;

[0586] The two PDCCH monitoring opportunities are treated as a whole PDCCH monitoring opportunity.

[0587] The target PDCCH monitoring time among the two DCCH monitoring times is treated as a valid PDCCH monitoring time.

[0588] The two PDCCH monitoring timings are the PDCCH monitoring timings during the repeated transmission of two PDCCHs in the two-stage DCI.

[0589] In some embodiments of this application, the timing of the target PDCCH monitoring includes at least one of the following:

[0590] The first of the two PDCCH monitoring opportunities;

[0591] The last of the two PDCCH monitoring opportunities;

[0592] The first PDCCH monitoring timing and the last PDCCH monitoring timing.

[0593] In some embodiments of this application, the PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information;

[0594] The two sets of PDCCH monitoring capability information include any one of the following:

[0595] The first set of PDCCH monitoring capability information and the second set of PDCCH monitoring capability information;

[0596] The third set of PDCCH monitoring capability information and the fourth set of PDCCH monitoring capability information; wherein, the first set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to the single-stage DCI; the second set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to the dual-stage DCI; the third set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to the first stage DCI in the dual-stage DCI; and the fourth set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to the second stage DCI in the dual-stage DCI.

[0597] In some embodiments of this application, each set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter, and the first set of PDCCH monitoring capability information is different from the second set of PDCCH monitoring capability information in terms of at least one PDCCH monitoring capability parameter.

[0598] In some embodiments of this application, each set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter, and the third set of PDCCH monitoring capability information is different from at least one PDCCH monitoring capability parameter in the fourth set of PDCCH monitoring capability information.

[0599] In the terminal device provided in this application embodiment, the PDCCH monitoring capability information sent by the terminal device to the network-side device is PDCCH monitoring capability information with symbol group as the time granularity, thereby solving the problem of insufficient flexibility in the definition of PDCCH monitoring capability information, making the PDCCH monitoring capability information applicable to a variety of application scenarios, and reducing the complexity of terminal device and communication protocol implementation.

[0600] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the communication method in the method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be described again here.

[0601] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps executed by the network-side device in the method embodiments shown in Figures 4 to 6. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effects.

[0602] Specifically, this application embodiment also provides a network-side device, which can be the communication device shown in FIG9 or FIG10. As shown in FIG13, the network-side device 1300 includes: an antenna 1301, a radio frequency device 1302, a baseband device 1303, a processor 1304, and a memory 1305. The antenna 1301 is connected to the radio frequency device 1302. In the uplink direction, the radio frequency device 1302 receives information through the antenna 1301 and sends the received information to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes the information to be transmitted and sends it to the radio frequency device 1302, which processes the received information and then transmits it through the antenna 1301.

[0603] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1303, which includes a baseband processor.

[0604] The baseband device 1303 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG13. One of the chips is, for example, a baseband processor, which is connected to the memory 1305 via a bus interface to call the program or instructions in the memory 1305 to execute the network-side device operation shown in the above method embodiment.

[0605] The network-side device may also include a network interface 1306, such as a Common Public Radio Interface (CPRI).

[0606] The radio frequency device 1302 is used to receive PDCCH monitoring capability information from the terminal device. The PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

[0607] In some embodiments of this application, the radio frequency device 1302 is used to send configuration information to the terminal device, the configuration information being used to configure the search space;

[0608] The configuration information includes at least one of the following:

[0609] The search space contains temporal location information for PDCCH monitoring;

[0610] Blind detection information of the search space;

[0611] The control channel element information of the search space.

[0612] In some embodiments of this application, the time-domain location information includes at least one of the following:

[0613] The first number of symbol groups corresponding to one cycle of PDCCH monitoring timing;

[0614] The time domain offset of PDCCH monitoring within the corresponding symbol group;

[0615] The PDCCH monitoring timing corresponds to the bitmap at the time domain position of the corresponding symbol group;

[0616] PDCCH monitoring timing is based on the second number of consecutive symbol groups within a cycle;

[0617] The number of times PDCCH is repeated;

[0618] Types of PDCCH monitoring timing;

[0619] The correlation between PDCCH monitoring timing and other factors.

[0620] In some embodiments of this application, the type of PDCCH monitoring timing includes at least one of the following:

[0621] Timing of PDCCH monitoring in the first phase;

[0622] Timing of PDCCH monitoring in the second phase;

[0623] Timing of two-stage PDCCH monitoring;

[0624] Single-stage PDCCH monitoring timing.

[0625] In some embodiments of this application, the PDCCH monitoring capability information is used to indicate at least one of the following:

[0626] The symbol group size N of the time granularity is a positive integer;

[0627] The terminal device supports the configuration of the number of symbols L of the control resource set, where L is a positive integer;

[0628] PDCCH monitoring timing is available at configurable symbol locations within each symbol group;

[0629] PDCCH monitoring timing is the configurable starting symbol position in each symbol group;

[0630] The maximum number of configurable PDCCH monitoring time spans in each symbol group;

[0631] The maximum number of symbols that can be configured for a single PDCCH monitoring time span in each symbol group;

[0632] In any symbol group, if the maximum number of configurable PDCCH monitoring timing spans in the configurable symbol positions is greater than 1, the minimum interval number of adjacent PDCCH monitoring timing spans in the configurable symbol positions in the symbol group.

[0633] The number of configurable symbol positions in each symbol group;

[0634] Whether the PDCCH monitoring timing for each symbol group can cross time slot boundaries;

[0635] Whether the timing span of PDCCH monitoring is consistent across different symbol groups;

[0636] Whether the PDCCH monitoring time span of each symbol group can cross the time slot boundary;

[0637] Whether the time slot between the monitoring timing spans of different symbol groups is greater than or equal to the symbol group size N;

[0638] Whether the interval between two adjacent downlink control information (DCI) is greater than or equal to a preset number of symbols, where the preset number of symbols is predefined;

[0639] PDCCH monitoring should not be performed across symbol groups;

[0640] The maximum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH repeated transmissions;

[0641] The minimum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH repeated transmissions;

[0642] The maximum interval between two adjacent PDCCH monitoring times in a two-stage PDCCH;

[0643] The minimum interval between two adjacent PDCCH monitoring times in a two-stage PDCCH.

[0644] In some embodiments of this application, N takes the value of at least one item from the set {4,7,14,28,56,112}.

[0645] In some embodiments of this application, the symbol positions for configurable PDCCH monitoring timing are the same in different symbol groups.

[0646] In some embodiments of this application, the configurable starting symbol position in the symbol group is the M1th symbol in the symbol group, and the configurable ending symbol position in the symbol group is the M2th symbol in the symbol group, where M1 and M2 are positive integers;

[0647] The configurable symbol positions in the symbol group satisfy at least one of the following:

[0648] M1 is predefined;

[0649] M2 is predefined;

[0650] The value of M2 is at least one item in the set {2, 13, N-1};

[0651] (M1,M2) takes at least one value from the set {(0,13),(14,27),(28,41),(42,55)}.

[0652] In some embodiments of this application, the value of L is at least one item in the set {1,2,3,6,12}.

[0653] In some embodiments of this application, the two adjacent DCIs satisfy at least one of the following:

[0654] The two adjacent DCIs are downlink authorized DCIs;

[0655] The two adjacent DCIs are uplink authorized DCIs;

[0656] One of the two adjacent DCIs is the downlink license DCI, and the other of the two adjacent DCIs is the uplink license DCI.

[0657] In some embodiments of this application, the PDCCH monitoring timing span is determined based on the bitmap of the symbol group.

[0658] In some embodiments of this application, the symbol group comprises at least two consecutive symbols.

[0659] In some embodiments of this application, the symbol group is determined based on one of the following:

[0660] If the number of symbols F in a time unit is an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group.

[0661] If the number of symbols F in the time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are used as the symbol group.

[0662] If the number of symbols F in the time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are taken as the first symbol group. The first symbol group is not configured with PDCCH monitoring timing.

[0663] In some embodiments of this application, the PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information, each set of PDCCH monitoring capability information containing at least one PDCCH monitoring capability parameter;

[0664] Among them, one set of PDCCH monitoring capability information is PDCCH monitoring capability information without PDCCH duplication configured; the other set of PDCCH monitoring capability information is PDCCH monitoring capability information with PDCCH duplication configured; some PDCCH monitoring capability parameters are different in each set of PDCCH monitoring capability information.

[0665] In some embodiments of this application, the first blind detection information and the second blind detection information of the terminal device are different;

[0666] Wherein, the first blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is configured; the second blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is not configured.

[0667] In some embodiments of this application, the first blind detection information and the second blind detection information are reported by the terminal device or predefined, or the first blind detection information and the first ratio are reported by the terminal device or predefined, and the first ratio is the ratio between the second blind detection information and the first blind detection information.

[0668] In some embodiments of this application, the third blind detection information and the fourth blind detection information of the terminal device are different;

[0669] The third blind detection information is the maximum blind detection information corresponding to the symbol group with PDCCH repetition configured, and the fourth blind detection information is the maximum blind detection information corresponding to the symbol group without PDCCH repetition configured.

[0670] In some embodiments of this application, the third blind detection information and the fourth blind detection information are reported by the terminal device or predefined, or the third blind detection information and the second ratio are reported by the terminal device or predefined, and the second ratio is the ratio between the fourth blind detection information and the third blind detection information.

[0671] In some embodiments of this application, the PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information;

[0672] The two sets of PDCCH monitoring capability information include any one of the following:

[0673] The first set of PDCCH monitoring capability information and the second set of PDCCH monitoring capability information;

[0674] The third set of PDCCH monitoring capability information and the fourth set of PDCCH monitoring capability information;

[0675] The first set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to single-stage DCI; the second set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to dual-stage DCI.

[0676] The third set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to the first stage DCI in the dual-stage DCI; the fourth set of PDCCH monitoring timing is the PDCCH monitoring capability information corresponding to the second stage DCI in the dual-stage DCI.

[0677] In some embodiments of this application, each set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter, and the first set of PDCCH monitoring capability information is different from the second set of PDCCH monitoring capability information in terms of at least one PDCCH monitoring capability parameter.

[0678] In some embodiments of this application, each set of PDCCH monitoring capability information includes at least one PDCCH monitoring capability parameter, and the third set of PDCCH monitoring capability information is different from at least one PDCCH monitoring capability parameter in the fourth set of PDCCH monitoring capability information.

[0679] In the network-side device provided in this application embodiment, since the PDCCH monitoring capability information received by the network-side device from the terminal device is PDCCH monitoring capability information with symbol group as the time granularity, the problem of insufficient flexibility in defining PDCCH monitoring capability information is solved, making the PDCCH monitoring capability information applicable to a variety of application scenarios and reducing the complexity of terminal device and communication protocol implementation.

[0680] In addition, the network-side device 1300 of this application embodiment also includes: a program or instructions stored in the memory 1305 and executable on the processor 1304. The processor 1304 calls the program or instructions in the memory 1305 to execute the methods executed by the modules shown in FIG9 and FIG10 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0681] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described communication method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0682] The processor mentioned above is either the processor in the terminal device or the processor in the 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. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0683] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described communication method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0684] 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.

[0685] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described communication method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0686] This application also provides a communication system, including: a terminal device and a network-side device, wherein the terminal device can be used to perform the steps of the communication method described above, and the network-side device can be used to perform the steps of the communication method described above.

[0687] 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.

[0688] From 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 computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0689] 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 implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A communication method, comprising: The terminal device sends Physical Downlink Control Channel (PDCCH) monitoring capability information to the network-side device. The PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

2. The method according to claim 1, wherein, The PDCCH monitoring capability information is used to indicate at least one of the following: The symbol set size is N, where N is a positive integer; The terminal device supports the configuration of the number of symbols L of the control resource set, where L is a positive integer; PDCCH monitoring timing is available at configurable symbol locations within each symbol group; PDCCH monitoring timing is the configurable starting symbol position in each symbol group; The maximum number of configurable PDCCH monitoring time spans in each symbol group; The maximum number of symbols that can be configured for a single PDCCH monitoring time span in each symbol group; In any symbol group, if the maximum number of configurable PDCCH monitoring timing spans in the configurable symbol positions is greater than 1, the minimum interval number of adjacent PDCCH monitoring timing spans in the configurable symbol positions in the symbol group. The number of configurable symbol positions in each symbol group; Whether the PDCCH monitoring timing for each symbol group can cross time slot boundaries; Whether the timing span of PDCCH monitoring is consistent across different symbol groups; Whether the PDCCH monitoring time span of each symbol group can cross the time slot boundary; Whether the time slot between the monitoring timing spans of different symbol groups is greater than or equal to the symbol group size N; Whether the interval between two adjacent downlink control information (DCI) is greater than or equal to a preset number of symbols, wherein the preset number of symbols is predefined; PDCCH monitoring should not be performed across symbol groups; The maximum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH repeated transmissions; The minimum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH repeated transmissions; The maximum interval between two adjacent PDCCH monitoring times in a two-stage PDCCH; The minimum interval between two adjacent PDCCH monitoring times in a two-stage PDCCH.

3. The method according to claim 2, wherein, N takes the value of at least one item from the set {4,7,14,28,56,112}.

4. The method according to claim 2, wherein, The symbol positions for configurable PDCCH monitoring timing are the same in different symbol groups.

5. The method according to any one of claims 2 to 4, wherein, The configurable starting symbol position in the symbol group is the M1th symbol in the symbol group, and the configurable ending symbol position in the symbol group is the M2th symbol in the symbol group, where M1 and M2 are positive integers; The configurable symbol positions in the symbol group satisfy at least one of the following: M1 is predefined; M2 is predefined; The value of M2 is at least one item in the set {2, 13, N-1}; (M1,M2) takes at least one value from the set {(0,13),(14,27),(28,41),(42,55)}.

6. The method according to claim 2, wherein, L takes the value of at least one item from the set {1,2,3,6,12}.

7. The method according to claim 2, wherein, The two adjacent DCIs satisfy at least one of the following: The two adjacent DCIs are downlink authorized DCIs; The two adjacent DCIs are uplink authorized DCIs; One of the two adjacent DCIs is the downlink license DCI, and the other of the two adjacent DCIs is the uplink license DCI.

8. The method according to claim 2, wherein, The PDCCH monitoring timing span is determined based on the bitmap of the symbol group.

9. The method according to any one of claims 1 to 8, wherein, The symbol group comprises at least two consecutive symbols.

10. The method according to claim 9, wherein, The symbol group is determined based on one of the following: If the number of symbols F in a time unit is an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group. If the number of symbols F in the time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are used as the symbol group. If the number of symbols F in the time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are taken as the first symbol group. The first symbol group is not configured with PDCCH monitoring timing.

11. The method according to claim 1, wherein, The method further includes: The terminal device receives configuration information from the network-side device, and the configuration information is used to configure the search space. The terminal device monitors the PDCCH based on the configuration information and the PDCCH monitoring capability information.

12. The method according to claim 11, wherein, The configuration information includes at least one of the following: The search space contains temporal location information for PDCCH monitoring; Blind detection information of the search space; The control channel element information of the search space.

13. The method according to claim 12, wherein, The time-domain location information includes at least one of the following: The first number of symbol groups corresponding to one cycle of PDCCH monitoring timing; The timing of PDCCH monitoring is offset within the corresponding symbol group in the time domain. The PDCCH monitoring timing is based on the bitmap corresponding to the time domain position of the corresponding symbol group; PDCCH monitoring timing is based on the second number of consecutive symbol groups within a cycle; The number of times PDCCH is repeated; Types of PDCCH monitoring timing; The correlation between PDCCH monitoring timing and other factors.

14. The method according to claim 13, wherein, The types of PDCCH monitoring timing include at least one of the following: Timing of PDCCH monitoring in the first phase; Timing of PDCCH monitoring in the second phase; Timing of two-stage PDCCH monitoring; Single-stage PDCCH monitoring timing.

15. The method according to claim 1, wherein, The PDCCH monitoring capability information is a set of PDCCH monitoring capability information; The terminal device's processing of multiple PDCCH monitoring opportunities during repeated PDCCH transmissions satisfies at least one of the following: Each of the multiple PDCCH monitoring opportunities is treated as an independent PDCCH monitoring opportunity. The multiple PDCCH monitoring opportunities are treated as a whole PDCCH monitoring opportunity. The target PDCCH monitoring time among the multiple PDCCH monitoring times is treated as a valid PDCCH monitoring time.

16. The method according to claim 15, wherein, The target PDCCH monitoring timing includes at least one of the following: The first PDCCH monitoring time among the multiple PDCCH monitoring times; The last PDCCH monitoring time among the multiple PDCCH monitoring times; The first PDCCH monitoring timing and the last PDCCH monitoring timing.

17. The method according to claim 1, wherein, The PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information, each set of PDCCH monitoring capability information containing at least one PDCCH monitoring capability parameter; Among them, one set of PDCCH monitoring capability information is PDCCH monitoring capability information without PDCCH duplication configured; the other set of PDCCH monitoring capability information is PDCCH monitoring capability information with PDCCH duplication configured; some PDCCH monitoring capability parameters are different in each set of PDCCH monitoring capability information.

18. The method according to claim 1, wherein, The first blind detection information and the second blind detection information of the terminal device are different; Wherein, the first blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is configured; the second blind detection information is the maximum blind detection information corresponding to each symbol group when PDCCH repetition is not configured.

19. The method according to claim 18, wherein, The first blind detection information and the second blind detection information are predefined, or the first blind detection information and the first ratio are predefined, and the first ratio is the ratio between the second blind detection information and the first blind detection information.

20. The method according to claim 1, wherein, The third and fourth blind detection information of the terminal device are different; The third blind detection information is the maximum blind detection information corresponding to the symbol group with PDCCH repetition configured, and the fourth blind detection information is the maximum blind detection information corresponding to the symbol group without PDCCH repetition configured.

21. The method according to claim 20, wherein, The third blind detection information and the fourth blind detection information are predefined, or the third blind detection information and the second ratio are predefined, and the second ratio is the ratio between the fourth blind detection information and the third blind detection information.

22. The method according to claim 1, wherein, The PDCCH monitoring capability information is a set of PDCCH monitoring capability information; The terminal device's processing of the two PDCCH monitoring opportunities corresponding to the received two-stage DCI satisfies at least one of the following: The two PDCCH monitoring opportunities are treated as independent PDCCH monitoring opportunities; The two PDCCH monitoring opportunities are treated as a whole PDCCH monitoring opportunity. The target PDCCH monitoring time among the two DCCH monitoring times is treated as a valid PDCCH monitoring time. The two PDCCH monitoring timings are the PDCCH monitoring timings during the repeated transmission of two PDCCHs in the two-stage DCI.

23. The method according to claim 22, wherein, The target PDCCH monitoring timing includes at least one of the following: The first of the two PDCCH monitoring opportunities; The last of the two PDCCH monitoring opportunities; The first PDCCH monitoring timing and the last PDCCH monitoring timing.

24. The method according to claim 1, wherein, The PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information. The two sets of PDCCH monitoring capability information include any one of the following: The first set of PDCCH monitoring capability information and the second set of PDCCH monitoring capability information; The third set of PDCCH monitoring capability information and the fourth set of PDCCH monitoring capability information; The first set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to single-stage DCI; the second set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to dual-stage DCI. The third set of PDCCH monitoring capability information is the PDCCH monitoring capability information corresponding to the first stage DCI in the dual-stage DCI; the fourth set of PDCCH monitoring timing is the PDCCH monitoring capability information corresponding to the second stage DCI in the dual-stage DCI.

25. The method according to claim 24, wherein, Each set of PDCCH monitoring capability information contains at least one PDCCH monitoring capability parameter, and at least one PDCCH monitoring capability parameter in the first set of PDCCH monitoring capability information is different from that in the second set of PDCCH monitoring capability information.

26. The method of claim 24, wherein, Each set of PDCCH monitoring capability information contains at least one PDCCH monitoring capability parameter, and the third set of PDCCH monitoring capability information is different from the fourth set of PDCCH monitoring capability information in terms of at least one PDCCH monitoring capability parameter.

27. A communication method, the method comprising: The network-side device receives PDCCH monitoring capability information from the terminal device. The PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

28. The method according to claim 27, wherein, The method further includes: The network-side device sends configuration information to the terminal device, the configuration information being used to configure the search space; The configuration information includes at least one of the following: The search space contains temporal location information for PDCCH monitoring; Blind detection information of the search space; The control channel element information of the search space.

29. The method according to claim 28, wherein, The time-domain location information includes at least one of the following: The first number of symbol groups corresponding to one cycle of PDCCH monitoring timing; The timing of PDCCH monitoring is offset within the corresponding symbol group in the time domain. The PDCCH monitoring timing is based on the bitmap corresponding to the time domain position of the corresponding symbol group; PDCCH monitoring timing is based on the second number of consecutive symbol groups within a cycle; The number of times PDCCH is repeated; Types of PDCCH monitoring timing; The correlation between PDCCH monitoring timing and other factors.

30. The method according to claim 29, wherein, The types of PDCCH monitoring timing include at least one of the following: Timing of PDCCH monitoring in the first phase; Timing of PDCCH monitoring in the second phase; Timing of two-stage PDCCH monitoring; Single-stage PDCCH monitoring timing.

31. The method according to claim 27, wherein, The PDCCH monitoring capability information is used to indicate at least one of the following: The symbol group size N of the time granularity is a positive integer; The terminal device supports the configuration of the number of symbols L of the control resource set, where L is a positive integer; PDCCH monitoring timing is available at configurable symbol locations within each symbol group; PDCCH monitoring timing is the configurable starting symbol position in each symbol group; The maximum number of configurable PDCCH monitoring time spans in each symbol group; The maximum number of symbols that can be configured for a single PDCCH monitoring time span in each symbol group; In any symbol group, if the maximum number of configurable PDCCH monitoring timing spans in the configurable symbol positions is greater than 1, the minimum interval number of adjacent PDCCH monitoring timing spans in the configurable symbol positions in the symbol group. The number of configurable symbol positions in each symbol group; Whether the PDCCH monitoring timing for each symbol group can cross time slot boundaries; Whether the timing span of PDCCH monitoring is consistent across different symbol groups; Whether the PDCCH monitoring time span of each symbol group can cross the time slot boundary; Whether the time slot between the monitoring timing spans of different symbol groups is greater than or equal to the symbol group size N; Whether the interval between two adjacent downlink control information (DCI) is greater than or equal to a preset number of symbols, wherein the preset number of symbols is predefined; PDCCH monitoring should not be performed across symbol groups; The maximum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH repeated transmissions; The minimum interval between two adjacent PDCCH monitoring opportunities in multiple PDCCH repeated transmissions; The maximum interval between two adjacent PDCCH monitoring times in a two-stage PDCCH; The minimum interval between two adjacent PDCCH monitoring times in a two-stage PDCCH.

32. The method according to claim 31, wherein, N takes the value of at least one item from the set {4,7,14,28,56,112}.

33. The method according to claim 31, wherein, The symbol positions for configurable PDCCH monitoring timing are the same in different symbol groups.

34. The method according to any one of claims 31 to 33, wherein, The configurable starting symbol position in the symbol group is the M1th symbol in the symbol group, and the configurable ending symbol position in the symbol group is the M2th symbol in the symbol group, where M1 and M2 are positive integers; The configurable symbol positions in the symbol group satisfy at least one of the following: M1 is predefined; M2 is predefined; The value of M2 is at least one item in the set {2, 13, N-1}; (M1,M2) takes at least one value from the set {(0,13),(14,27),(28,41),(42,55)}.

35. The method according to claim 31, wherein, L takes the value of at least one item from the set {1,2,3,6,12}.

36. The method according to claim 31, wherein, The two adjacent DCIs satisfy at least one of the following: The two adjacent DCIs are downlink authorized DCIs; The two adjacent DCIs are uplink authorized DCIs; One of the two adjacent DCIs is the downlink license DCI, and the other of the two adjacent DCIs is the uplink license DCI.

37. The method according to claim 31, wherein, The PDCCH monitoring timing span is determined based on the bitmap of the symbol group.

38. The method according to any one of claims 27 to 37, wherein, The symbol group comprises at least two consecutive symbols.

39. The method according to claim 38, wherein, The symbol group is determined based on one of the following: If the number of symbols F in a time unit is an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group. If the number of symbols F in the time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are used as the symbol group. If the number of symbols F in the time unit is not an integer multiple of the symbol group size N, then starting from the first symbol of the time unit, every N symbols are determined as a symbol group, and the remaining symbols are taken as the first symbol group. The first symbol group is not configured with PDCCH monitoring timing.

40. The method of claim 27, wherein, The PDCCH monitoring capability information consists of two sets of PDCCH monitoring capability information, each set of PDCCH monitoring capability information containing at least one PDCCH monitoring capability parameter; Among them, one set of PDCCH monitoring capability information is PDCCH monitoring capability information without PDCCH duplication configured; the other set of PDCCH monitoring capability information is PDCCH monitoring capability information with PDCCH duplication configured; some PDCCH monitoring capability parameters are different in each set of PDCCH monitoring capability information.

41. A communication device, comprising: The sending module is used to send PDCCH monitoring capability information to network-side devices. The PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

42. A communication device, comprising: The receiving module is used to receive PDCCH monitoring capability information from the terminal device, wherein the PDCCH monitoring capability information is monitoring capability information with symbol groups as the time granularity.

43. A terminal device comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the communication method as described in any one of claims 1 to 26.

44. A network-side device, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the communication method as claimed in any one of claims 27 to 40.

45. A readable storage medium storing a program or instructions that, when executed by a processor, implement the communication method as described in any one of claims 1-26, or implement the steps of the communication method as described in any one of claims 27-40.

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