Monitoring method, information transmission method, and apparatus, terminal and network-side device

Abstract

The present application belongs to the technical field of communications. Disclosed are a monitoring method, an information transmission method, and an apparatus, and a terminal and a network-side device. The monitoring method comprises: a terminal switching to a target search space group on the basis of a switching criterion; and the terminal monitoring a physical downlink control channel (PDCCH) on at least some frequency-domain units of a serving cell on the basis of the target search space group, wherein the serving cell comprises at least two frequency-domain units, and a control resource set associated with the target search space group is configured on the at least some frequency-domain units.

Description

Listening, information transmission method and device, terminal and network side equipment

[0001] Cross-reference to Related Applications

[0002] The present application claims priority to Chinese Patent Application No. 202410649075.6, filed on May 23, 2024, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present application belongs to the field of communication technology, and specifically relates to a listening, information transmission method, device, terminal and network side equipment. BACKGROUND

[0004] Due to the growth of services, communication systems need more spectrum resources. High frequency bands have larger bandwidths, and accordingly, there will be larger path losses, which have a negative impact on coverage and link stability. Sub-3GHz spectrum has the advantage of small penetration loss, and it plays an important role in cellular network deployment due to its good coverage. On the other hand, compared with C-band, the Sub-3GHz spectrum is fragmentedly allocated to International Mobile Telecommunications (IMT), and due to the competition between mobile operators, the bandwidth of each spectrum block is relatively narrow. On the other hand, almost all operators around the world have multiple Sub-3GHz bands (for example, 700MHz, 800MHz, 900MHz, 1.4GHz, 1.8GHz, 2.1GHz, 2.3GHz or 2.6GHz bands). Therefore, wideband operation on these discontinuous sub-3GHz spectrums will be the key to meet the growing demand for future services. Therefore, a potential solution is to use a flexible serving cell, which can contain multiple scattered spectrum resources to efficiently and flexibly utilize these scattered continuous or discontinuous spectrums. If the terminal listens to the Physical Downlink Control Channel (PDCCH) on these spectrums, it will bring unnecessary terminal power consumption. SUMMARY

[0005] Embodiments of the present application provide a listening, information transmission method, device, terminal and network side equipment to realize the listening of the PDCCH of the flexible serving cell.

[0006] In a first aspect, a listening method is provided, the method comprising:

[0007] The terminal switches to a target search space group based on a switching criterion;

[0008] The terminal listens to a physical downlink control channel (PDCCH) on at least part of frequency domain units of a serving cell according to the target search space group, the serving cell including at least two frequency domain units, and the at least part of frequency domain units being configured with a control resource set associated with the target search space group.

[0009] In a second aspect, a method for information transmission is provided, the method comprising:

[0010] The network-side device sends search space group configuration information to the terminal;

[0011] The search space group configuration information is used to indicate at least one of the following:

[0012] One search space group is associated with one first control resource set, and the first control resource set includes one control resource set or one control resource set combination.

[0013] One search space group is associated with at least two second control resource sets, and the at least two second control resource sets include at least one of the following: at least one control resource set, at least one control resource set combination.

[0014] In a third aspect, a listening device is provided, comprising:

[0015] The first processing module is configured to switch to a target search space group based on a switching criterion.

[0016] The second processing module is configured to listen to a physical downlink control channel (PDCCH) on at least part of frequency domain units of a serving cell according to the target search space group, the serving cell including at least two frequency domain units, and the at least part of frequency domain units being configured with a control resource set associated with the target search space group.

[0017] In a fourth aspect, an information transmission device is provided, comprising:

[0018] The first sending module is configured to send search space group configuration information to the terminal.

[0019] The search space group configuration information is used to indicate at least one of the following:

[0020] One search space group is associated with one first control resource set, and the first control resource set includes one control resource set or one control resource set combination.

[0021] One search space group is associated with at least two second control resource sets, and the at least two second control resource sets include at least one of the following: at least one control resource set, at least one control resource set combination.

[0022] In a fifth aspect, a terminal is provided, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions, when executed by the processor, implement steps of the method according to the first aspect.

[0023] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is configured to switch to a target search space set based on a switching criterion.

[0024] The terminal monitors a physical downlink control channel (PDCCH) on at least part of frequency domain units of a serving cell according to the target search space set, the serving cell comprising at least two frequency domain units, and the at least part of frequency domain units being configured with a control resource set associated with the target search space set.

[0025] In a seventh aspect, a network side device is provided, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions, when executed by the processor, implement steps of the method according to the first aspect.

[0026] In an eighth aspect, a network side device is provided, comprising a processor and a communication interface, wherein the communication interface is configured to send search space set configuration information to a terminal.

[0027] The search space set configuration information is configured to indicate at least one of the following:

[0028] One search space set is associated with one first control resource set, and the first control resource set comprises one control resource set or one control resource set combination.

[0029] One search space set is associated with at least two second control resource sets, and the at least two second control resource sets comprise at least one of the following: at least one control resource set, at least one control resource set combination.

[0030] In a ninth aspect, a readable storage medium is provided, the readable storage medium storing programs or instructions, the programs or instructions, when executed by a processor, implement steps of the method according to the first aspect, or implement steps of the method according to the second aspect.

[0031] In a tenth aspect, a wireless communication system is provided, comprising a terminal and a network side device, the terminal being configured to implement steps of the method according to the first aspect, and the network side device being configured to implement steps of the method according to the second aspect.

[0032] In an eleventh aspect, a chip is provided, which includes a processor and a communication interface, the communication interface and the processor are coupled, the processor is configured to run programs or instructions, and implement the method in the first aspect or implement the method in the second aspect.

[0033] In a twelfth 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 method in the first aspect or the second aspect.

[0034] In the embodiments of the present application, by performing search space group switching based on the switching criterion, and monitoring the PDCCH on the serving cell including at least two frequency domain units according to the target search space group after switching, the transmission of the PDCCH under the non-continuous spectrum can be adapted, the resource utilization rate is improved, the detection performance of the PDCCH is improved, and the terminal power consumption is saved. BRIEF DESCRIPTION OF DRAWINGS

[0035] FIG. 1 is a block diagram of a wireless communication system to which embodiments of the present application can be applied;

[0036] FIG. 2 is a flow diagram of a monitoring method according to an embodiment of the present application;

[0037] FIG. 3 is a schematic diagram of available resources corresponding to the same control resource set associated with the same search space group in different time slots;

[0038] FIG. 4 is a schematic diagram of control resource sets corresponding to before and after search space group switching;

[0039] FIG. 5 is a schematic diagram of control resource sets corresponding to before and after search space group switching;

[0040] FIG. 6 is a schematic diagram of control resource set combination;

[0041] FIG. 7 is a schematic diagram of distribution of control resource sets corresponding to search space groups;

[0042] FIG. 8 is a schematic diagram of distribution of control resource sets corresponding to search space groups;

[0043] FIG. 9 is a flow diagram of an information transmission method according to an embodiment of the present application;

[0044] FIG. 10 is a schematic diagram of modules of a monitoring apparatus according to an embodiment of the present application;

[0045] FIG. 11 is a schematic diagram of modules of an information transmission apparatus according to an embodiment of the present application;

[0046] FIG. 12 is a schematic diagram of a structure of a communication device according to an embodiment of the present application;

[0047] FIG. 13 is a structural schematic diagram of a terminal according to an embodiment of the present application;

[0048] FIG. 14 is a structural schematic diagram of a network-side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0050] The terms "first", "second", and the like in the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are generally a category and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in the present application means at least one of the connected objects. For example, the protection scope of "A or B" at least covers three schemes, namely, scheme one: including A and not including B; scheme two: including B and not including A; scheme three: including A and including B. In addition, the terms "A and / or B", "at least one of A and B", "at least one of A or B" also at least cover the above three schemes, respectively. The character " / " generally represents that the objects before and after are in an "or" relationship.

[0051] The term "indication" in the present application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). The direct indication can be understood as that the sender explicitly informs the receiver of specific information, operations to be performed or requested results, etc. in the indication sent by the sender. The indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or judges and determines the operations to be performed or the requested results according to the judgment result.

[0052] It is worth noting that the technology described in the embodiments of the present application is 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 the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for the purpose of example, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems.

[0053] FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a terminal-side device such as a mobile phone, a Tablet Personal Computer, a Laptop Computer, a notebook computer, a Personal Digital Assistant (PDA), a palmtop computer, a netbook, an Ultra-mobile Personal Computer (UMPC), a Mobile Internet Device (MID), an Augmented Reality (AR) device, a Virtual Reality (VR) device, a robot, a wearable device, a flight vehicle, a Vehicle User Equipment (VUE), a shipboard device, a Pedestrian User Equipment (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture), a game console, a Personal Computer (PC), a kiosk, or a self-service machine. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, etc.), a smart wristband, smart clothes, etc. The vehicle-mounted device can also be referred to as a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. The access network device can also be referred to as a Radio Access Network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a Wireless Local Area Network (WLAN) Access Point (AP), or a Wireless Fidelity (WiFi) node, etc.The base station can be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a relay station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home Node B (HNB), a home evolved Node B, a transmit / receive point (TRP), or some other suitable terminology in the art, and is not limited to a particular technical terminology, provided that the same technical effect is achieved. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0054] The core network device can also be referred to as a core network node, a core network function, or a core network network element, etc., which includes but is not limited to at least one of the following: a mobility management entity (MME), an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), a policy control function (PCF), a policy and charging rules function (PCRF), an edge application server discovery function (EASDF), a unified data management (UDM), a unified data repository (UDR), a home subscriber server (HSS), a centralized network configuration (CNC), a network repository function (NRF), a network exposure function (NEF), a local NEF (L-NEF), a binding support function (BSF), an application function (AF), a location management function (LMF), a gateway mobile location center (GMLC), a network data analytics function (NWDAF), etc. It should be noted that only the core network device in the NR system is taken as an example for introduction in the embodiments of the present application, and the specific type of the core network device is not limited. If the name of the core network device mentioned in the embodiments of the present application changes in the subsequent protocol version (for example, 6G), it is also within the protection scope of the present application.

[0055] Optionally, the core network device can be implemented by one or more function modules in one device, or can be implemented by multiple devices jointly, and the embodiments of the present application do not make a specific limitation in this regard. It can be understood that the above function modules can be network elements in a hardware device, can be software function modules running on a dedicated hardware, or can be virtualized function modules instantiated on a platform (for example, a cloud platform).

[0056] The related art of the embodiments of the present application will be described as follows.

[0057] Mobile communication systems need to adapt to more diverse scenarios and service requirements, for example, the main scenarios of the 5th Generation (5G) communication system include Enhanced Mobile Broadband (eMBB), Ultra-reliable and Low Latency Communications (URLLC), massive Machine Type of Communication (mMTC), which puts forward the requirements of high reliability, low latency, large bandwidth, wide coverage, etc. for the system. For different application scenarios, the transmission bandwidth required by the terminal is different. In New Radio (NR), the base station can schedule the terminal to transmit on different bandwidth parts according to the needs.

[0058] In NR, the network configures one or more bandwidth parts (BWP) and / or performs data transmission for a user equipment (UE). A BWP is a continuous resource in the frequency domain. The UE realizes dynamic bandwidth change by activating different BWPs. As shown in the following figure. At the first time, the UE has a large amount of traffic, and the UE activates a large bandwidth (BWP1); at the second time, the UE has a small amount of traffic, and the UE activates a small bandwidth (BWP2), which can meet the basic communication needs; at the third time, the system finds that there is a large range of frequency selective fading in the bandwidth of BWP1, or the resources in the frequency range of BWP2 are relatively scarce, so the UE is instructed to activate a new bandwidth (BWP3).

[0059] Each BWP can correspond to different configuration parameters, including subcarrier spacing, BWP location and bandwidth, and Cyclic Prefix (CP).

[0060] A control resource set (CORESET) describes the frequency domain characteristics of PDCCH blind detection resources, and a search space represents the time domain characteristics, i.e., a period and an offset, a number of slots monitored in each period, and a starting symbol in each slot.

[0061] A CORESET is a series of physical resource blocks (PRBs) in the frequency domain, and a UE attempts to blindly detect downlink control information (DCI) in the PRBs.

[0062] The PRBs can be continuous or discontinuous.

[0063] One CORESET can occupy one or more continuous symbols in the time domain: {1, 2, 3}. Specifically, when there is one symbol, the resource element group (REG) bundle size can be {2, 6}, and when there are 2 or 3 symbols, the REG bundle size can be equal to the number of time domain symbols or 6.

[0064] One UE can be configured with one or more CORESETs, and each cell per BWP can have a maximum of 3 CORESETs. Specifically, each CORESET can be associated with two search spaces: a common search space (CSS) or a dedicated search space (USS). Each BWP can have a maximum of 3 coreset, and each BWP can have a maximum of 10 search spaces.

[0065] The multiple CORESETs configured for one UE can overlap in the frequency domain or the time domain.

[0066] In each CORESET, the mapping of a control channel element (CCE) to a REG can be interleaved or non-interleaved, but only one mapping mode is possible for one CORESET.

[0067] Sub-3GHz spectrum has the advantage of small penetration loss and plays an important role in cellular network deployment due to its good coverage. On the other hand, compared with C-band, the Sub-3GHz spectrum is fragmentedly allocated to IMT, and due to the competition between mobile operators, the bandwidth of each spectrum block is relatively narrow. On the other hand, almost all operators around the world have multiple Sub-3GHz bands (for example, 700MHz, 800MHz, 900MHz, 1.4GHz, 1.8GHz, 2.1GHz, 2.3GHz or 2.6GHz bands). In 4G and 5G related technologies, in order to use scattered spectrum, carrier aggregation (CA) is the traditional solution for operators and terminals to aggregate spectrum, that is, different continuous spectrums are used as a carrier. However, the CA mechanism in the related art regards each carrier as an independent serving cell and assumes that each carrier is independently deployed. The independent management of each carrier brings unnecessary overhead and efficiency loss (such as independent control signaling, common signaling, etc.). This also brings unnecessary processes and delays (such as synchronization, secondary cell (SCell) addition / release / activation / measurement / mobility, etc.). In addition, the CA mechanism is only beneficial to UEs in the radio resource control (RRC) connected mode (RRC_connected), that is, the RRC connection with the network is completed, and is not beneficial to UEs in the radio resource control idle mode / inactive mode (RRC_idle / inactive (for example, initial access / small data transmission (SDT))). If these discontinuous spectrums can be effectively aggregated to form a "single" flexible serving cell with a relatively large bandwidth, all operators can benefit.

[0068] Therefore, 6G will support the design of flexible serving cells in multiple carriers, multiple frequency domain parts, multiple frequency bands or multiple sub-bands. The introduction of flexible cells can flexibly and efficiently utilize adjacent non-continuous spectrums from the perspective of L1 / L2 / L3 signaling, processes and cell management. It is beneficial to UEs in the CONNECTED state and the (idle) IDLE state, thereby improving the user-perceived data rate, energy saving, system capacity and coverage. It also simplifies network management complexity and improves energy efficiency. In addition, these narrow bandwidth carriers cannot carry CCEs with a high aggregation level, for example, a CCE with an aggregation level of 16 needs to occupy a maximum of 96 RBs, which is not conducive to the transmission of control information at the cell edge, reducing coverage. In addition, narrow bandwidth carriers may also bring a higher PDCCH collision probability.

[0069] Currently, the model of the flexible serving cell is divided into two types:

[0070] Type one: multiple bands or carriers or frequency parts or subbands are regarded as independent bandwidth parts (BWP), and multiple BWPs can be activated at the same time;

[0071] Type two: multiple bands or carriers or frequency parts or subbands are regarded as one BWP.

[0072] That is, a flexible serving cell includes at least one frequency domain unit, the frequency domain unit can include at least one of a band, a carrier, a subband, a BWP, and a frequency part, and the at least one frequency domain unit can be discontinuous.

[0073] The listening method, the information transmission method, the device, the terminal, and the network side device provided in the embodiments of the present application will be described in detail in combination with the accompanying drawings and some embodiments and application scenarios.

[0074] As shown in FIG. 2, the present application provides a listening method, comprising:

[0075] Step 201: The terminal switches to a target search space group based on a switching criterion.

[0076] Step 202: The terminal listens to a physical downlink control channel (PDCCH) on at least part of the frequency domain units of a serving cell according to the target search space group, the serving cell includes at least two frequency domain units, and the at least part of the frequency domain units are configured with a control resource set (COSESET) associated with the target search space group.

[0077] It should be noted that the serving cell in the embodiments of the present application can be the flexible serving cell described above. By switching the search space group based on the switching criterion, the terminal listens to the PDCCH on the serving cell including at least two frequency domain units according to the target search space group after switching, which can adapt to the transmission of the PDCCH under the non-continuous spectrum, improve the resource utilization, improve the detection performance of the PDCCH, and save the terminal power consumption.

[0078] Optionally, in one implementation, if the control resource set associated with the target search space group or the frequency domain unit where the control resource set is located is not activated, the terminal activates the control resource set associated with the target search space group or the frequency domain unit where the control resource set is located when it is determined to switch to the target search space group.

[0079] The switching criterion comprises at least one of A11-A14.

[0080] A11, switching to a target search space group according to effectiveness of a resource;

[0081] Optionally, the resource mentioned in the embodiments of the present application comprises at least one of the following:

[0082] A111, a frequency domain unit where a control resource set (CORESET) associated with the search space group is located;

[0083] A112, a control resource set associated with the search space group.

[0084] Optionally, the frequency domain unit mentioned in the embodiments of the present application comprises at least one of the following:

[0085] band, carrier, subband, bandwidth part (BWP), frequency part.

[0086] Optionally, in an implementation manner, the effectiveness of the resource is determined by at least one of the following:

[0087] A1101, determined by activation and / or deactivation indication of the resource;

[0088] For example, the effectiveness of the resource can be determined by activation and / or deactivation of the BWP, and the effectiveness of the resource can also be determined by activation and / or deactivation of the CORESET.

[0089] A1102, determined by signaling configuration or signaling indication corresponding to the resource;

[0090] For example, the effectiveness of the resource can be determined by subband full duplex (SubBand non-overlapping Full Duplex, SBFD) time-frequency resource configuration, the effectiveness of the resource can also be determined by time division duplex (Time Division Duplex, TDD) configuration, and the effectiveness of the resource can also be determined by slot format indication (Slot Format Indicator, SFI).

[0091] For example, the activation and deactivation of the control resource set and the frequency domain unit where the control resource set is located can be consistent or independent. Activating the control resource set is equivalent to activating the frequency domain unit where the control resource set is located, and deactivating the frequency domain unit where the control resource set is located is equivalent to deactivating the control resource set. Deactivating the control resource set does not mean that the frequency domain unit where the control resource set is located is deactivated, and for the same reason, activating the frequency domain unit where the control resource set is located does not mean activating the control resource set. Therefore, the activation or deactivation of the control resource set or the frequency domain unit where the control resource set is located can cause the resources of the control resource set to be valid or invalid, thereby causing the search space group associated with the control resource set to be valid or invalid. For example, search space group 1 is associated with control resource set 1 and control resource set 2, and search space group 2 is associated with control resource set 2. When control resource set 1 or the frequency domain unit where control resource set 1 is located is deactivated, control resource set 1 is unavailable, and search space group 1 is invalid at this time, and search space group 2 can be switched to an effective search space group. In addition, the control resource set resource can also become invalid due to the TDD configuration or the SFI indication. For example, the control resource set in the flexible slot configured in the semi-static common signaling is changed to the UL slot by the semi-static dedicated signaling or the SFI, and the control resource set is an invalid control resource set, and the search space group associated with the control resource set is also invalid.

[0092] Optionally, in an implementation, the activated resource indicated or configured as a downlink transmission direction is determined as a valid resource; that is, in one case in the embodiment of the application, the terminal determines the activated resource indicated or configured as a downlink transmission direction as a valid resource.

[0093] For example, in FIG. 3, the control resource set 1 associated with the search space group 1 is configured in the time slot 1, the time slot 2, the time slot 3 and the time slot 4, when the time slot 2 and the time slot 4 are configured as SBFD time slots (that is, there are both uplink subbands and downlink subbands in the time slot), the control resource set resource overlapping with the UL subband and the guardband is unavailable, and the available resources of the control resource set 1 in different time slots are different. In the time slot 1 and the time slot 3, all the frequency domain resources of the control resource set 1 are available, and in the time slot 2 and the time slot 4, only the control resource set resource overlapping with the downlink (DL) subband is available.

[0094] For example, when there are multiple TRPs in the base station, different TDD configurations or control resource set resources can be configured for each TRP, and when the UE is connected to multiple TRPs at the same time, the control resource sets corresponding to the multiple TRPs are associated with the same search space group. In each time slot, the available control resource set resources are different with the TDD configuration of the TRP. For example, the base station configures a PDCCH monitoring period for the UE, and in each monitoring opportunity, the UE can monitor the PDCCH on different control resource sets or the PDCCH on all control resource sets. If the base station configures a monitoring period of 5 time slots, TRP1 is DL in time slot 5 and time slot 10, TRP2 is UL in time slot 5, and is DL in time slot 10 and time slot 20, then in time slot 5, the UE monitors the PDCCH on the control resource set of TRP1, in time slot 10, the UE monitors the PDCCH on the control resource sets of TRP1 and TRP2, and in time slot 20, the UE monitors the PDCCH on the control resource set of TRP2.

[0095] It should be noted that in this case, the switching of the search space group is performed in time according to the validity of the resource, so as to ensure that the PDCCH monitoring can be accurately performed.

[0096] A12、According to the received switching indication information, switch to the target search space group;

[0097] Optionally, the switching indication information is usually sent by the network side device to the terminal.

[0098] Optionally, the switching indication information can be DCI; further, the DCI can be group common DCI (such as DCI2_0), or scheduling DCI (including at least one of uplink scheduling DCI and downlink scheduling DCI).

[0099] It should be noted that when switching between only two search space groups, different search space groups can be indicated by different values of 1 bit. When switching between multiple search space groups, the corresponding search space groups can be indicated by a bitmap, and each bit indicates a corresponding search space group; or the identification (such as index) of the search space group can also be indicated by N bits, and switch to the corresponding search space group.

[0100] Optionally, in an implementation, if the control resource set associated with the target search space group or the frequency domain unit where the control resource set is located is not activated, when it is determined to switch to the target search space group, the terminal activates the control resource set associated with the target search space group or the frequency domain unit where the control resource set is located.

[0101] It should be noted that in this case, the terminal dynamically switches the search space group based on the indication to ensure that the PDCCH can be timely and accurately monitored.

[0102] A13, switching to a target search space group according to the received scheduling information;

[0103] Optionally, in an implementation, the scheduling information is carried by DCI.

[0104] Optionally, in an implementation, the switching to the target search space group according to the received scheduling information comprises:

[0105] determining the target search space group to be switched to according to the target information;

[0106] The target information comprises at least one of the following:

[0107] A131, the number of frequency domain units scheduled by the scheduling information;

[0108] A132, whether the scheduling information schedules data on all activated frequency domain units.

[0109] For example, in an implementation, if the scheduling information schedules data on at least two frequency domain units, or the scheduling information schedules data on all activated frequency domain units, the terminal switches to one search space group (for example, search space group 1); if the scheduling information schedules data on one frequency domain unit, or the scheduling information does not schedule data on all activated frequency domain units, the terminal switches to another search space group (for example, search space group 2).

[0110] Optionally, in an implementation, if the control resource set associated with the target search space group to be switched to or the frequency domain unit where the control resource set is located is not activated, the terminal activates the control resource set associated with the target search space group or the frequency domain unit where the control resource set is located when determining to switch to the target search space group.

[0111] It should be noted that in this case, the terminal dynamically switches the search space group based on the indication to ensure that the PDCCH can be timely and accurately monitored, which can avoid unnecessary PDCCH monitoring and save terminal power.

[0112] For example, when the UE has multiple activated frequency domain units, if a single DCI schedules multiple frequency domain units, then the UE assumes that the single DCI schedules multiple frequency domain units in the following time period. The single DCI scheduling multiple frequency domain units includes that the single DCI schedules all activated frequency domain units, or the single DCI schedules at least two activated frequency domain units. In this case, the UE only needs to monitor the PDCCH on one frequency domain unit, and does not need to monitor the PDCCH on other frequency domain units, which can save the power consumption of the UE. In this case, the UE can switch from the search space group associated with multiple control resource sets to the search space group associated with one control resource set. The frequency domain unit that the UE needs to monitor can be an anchor frequency domain unit configured by the system, as shown in FIG. 4. In slot 1, the base station schedules three activated frequency domain units by sending a DCI in the second frequency domain unit. In slot 2, the UE switches to the search space group 2, and the control resource set associated with the search space group 2 is on the anchor frequency domain unit (different from the frequency domain unit in which the DCI is sent in slot 1). Alternatively, the frequency domain unit that the UE needs to monitor can be the frequency domain unit in which the DCI is sent, as shown in FIG. 5. The search space group 2 is associated with the control resource set in the second frequency domain unit.

[0113] In addition, the UE can also switch to the search space group associated with multiple control resource sets according to the number of frequency domain units scheduled by the single DCI. For example, when the number of frequency domain units scheduled by the single DCI is less than the number of activated frequency domain units (for the case of the single DCI scheduling all activated frequency domain units), or when the single DCI schedules a single frequency domain unit (for the case of the single DCI scheduling at least two activated frequency domain units), it means that the single DCI scheduling multiple frequency domain units will not occur in the following time period. Therefore, the UE switches to the search space group associated with three control resource sets. The UE monitors the candidate PDCCHs on the three control resource sets in each monitoring opportunity. When the UE monitors the PDCCHs of the control resource set 1 (the control resource set on the first frequency domain unit) and the control resource set 3 (the control resource set on the third frequency domain unit) to schedule the frequency domain units in which the UE is located, respectively, the UE performs transmission on the first and third frequency domain units according to the scheduling information, as shown in FIG. 4 and FIG. 5.

[0114] A14、in the case where the blind detection budget or the control channel unit CCE budget does not meet the first threshold, switching to a target search space group;

[0115] Optionally, in an implementation, in this case, the number of candidate PDCCHs corresponding to the target search space group to which the UE switches is less than the number of candidate PDCCHs corresponding to the search space group before the switching.

[0116] Optionally, the number of candidate PDCCHs corresponding to the target search space group to which the terminal switches is less than the number of candidate PDCCHs corresponding to the search space group before switching, and the method further comprises at least one of the following:

[0117] A141, the number of control resource sets or time-frequency resources associated with the target search space group to which the terminal switches is less than the number of control resource sets or time-frequency resources associated with the search space group before switching.

[0118] A142, the aggregation level of the target search space group to which the terminal switches is greater than the aggregation level of the search space group before switching.

[0119] It should be noted that in this case, the switching of the search space group is performed in time when the blind detection budget or the CCE budget does not meet the requirements, so as to ensure that the PDCCH can be accurately monitored, improve the monitoring performance of the PDCCH, and avoid canceling the monitoring of all PDCCHs corresponding to the search space group exceeding the blind detection budget or the CCE budget without switching the search space group.

[0120] Optionally, in an implementation, the method further comprises:

[0121] Step 301: In the case where the blind detection budget or the CCE budget does not meet the second threshold, the terminal cancels the monitoring of the PDCCH exceeding the blind detection budget or the CCE budget.

[0122] It should be noted that step 301 can be implemented independently without relying on steps 201 and 202, and optionally, the method further comprises: in the case where the blind detection budget or the CCE budget meets the second threshold, the terminal monitors the PDCCH exceeding the blind detection budget or the CCE budget.

[0123] Optionally, in an implementation, the canceling of the monitoring of the PDCCH exceeding the blind detection budget or the CCE budget comprises at least one of the following:

[0124] A21, monitoring the PDCCH on the frequency domain unit according to the first rule, and canceling the monitoring of the candidate PDCCH exceeding the blind detection budget or the CCE budget;

[0125] The first rule comprises any one of the following: the number from large to small, and the number from small to large.

[0126] Optionally, in an implementation, the specific implementation of canceling the monitoring of the candidate PDCCH exceeding the blind detection budget or the CCE budget comprises:

[0127] canceling the candidate PDCCH exceeding the blind detection budget or the CCE budget in the target frequency domain unit and the candidate PDCCH on the frequency domain unit after the target frequency domain unit;

[0128] wherein a part of the candidate PDCCHs in the target frequency domain unit does not exceed the blind detection budget or the CCE budget, and another part of the candidate PDCCHs in the target frequency domain unit exceeds the blind detection budget or the CCE budget.

[0129] In this case, it can be understood that the terminal does not cancel the monitoring of all candidate PDCCHs corresponding to the entire search space group, but only cancels the monitoring of a part of candidate PDCCHs exceeding the blind detection budget or the CCE budget, i.e., only cancels the candidate PDCCHs in the frequency domain unit exceeding the blind detection budget or the CCE budget.

[0130] A22, according to the second rule, monitoring the PDCCH on the control resource set, canceling the PDCCH monitoring on the control resource set exceeding the blind detection budget or the CCE budget;

[0131] The second rule includes any one of the following: the number from large to small, the number from small to large.

[0132] Optionally, in an implementation manner, the canceling the PDCCH monitoring on the control resource set exceeding the blind detection budget or the CCE budget includes:

[0133] canceling the PDCCH monitoring on the target control resource set and the control resource set after the target control resource set;

[0134] wherein a part of the PDCCHs in the target control resource set does not exceed the blind detection budget or the CCE budget, and another part of the PDCCHs in the target control resource set exceeds the blind detection budget or the CCE budget.

[0135] In this case, it can be understood that only a part of the control resource sets associated with the search space group is canceled, i.e., only the control resource set corresponding to all PDCCHs exceeding the blind detection budget or the CCE budget is canceled.

[0136] It should be noted that in this case, the monitoring of a part of PDCCHs is canceled when the blind detection budget or the CCE budget does not meet the requirements, so as to avoid canceling the monitoring of all candidate PDCCHs corresponding to the search space group due to the budget, and improve the monitoring performance of PDCCH.

[0137] When multiple control resource sets are associated with a search space group, discarding the search space group can cause serious waste of PDCCH resources. Therefore, switching to a search space group that meets a preset condition can be performed, for example, the target search space group is associated with a smaller number of control resource sets, or the control resource set has less frequency domain resource, a higher aggregation level, and the like. Further, if the search space group is not switched, the candidate PDCCH can be monitored according to the priority order until the preset condition is not met. For example, the search space group is associated with control resource set 1, control resource set 2, and control resource set 3. Control resource set 1 and control resource set 3 are on frequency domain unit 2, and control resource set 2 is on frequency domain unit 1. The corresponding PDCCH can be monitored according to a specific rule. For example, only the PDCCH is monitored according to the control resource set number from small to large, and then the PDCCH on control resource set 1 is monitored, and then the PDCCH on control resource set 2 is monitored, and so on. If the PDCCH is monitored according to the sequence number of the frequency domain unit and the sequence number of the control resource set from small to large, the PDCCH on control resource set 2 on frequency domain unit 1 is monitored first, and then the PDCCH on control resource set 1 and control resource set on frequency domain unit 2 is monitored. Assuming that in the latter case, after the UE monitors the PDCCH on control resource set 1, the blind detection budget is not enough to monitor the PDCCH on control resource set 3, the monitoring of the PDCCH on control resource set 3 is cancelled.

[0138] Optionally, in an implementation, the target search space group mentioned in the embodiments of the present application includes at least one search space.

[0139] Optionally, the target search space group in the embodiments of the present application can be replaced by a target search space, a target search space set, a target search space set group, or a target search space set (group) combination.

[0140] Optionally, the target search space set in the embodiments of the present application includes at least one search space; the target search space set group includes at least one search space; and the target search space set (group) combination includes at least one search space.

[0141] It should be noted that in order to ensure that the terminal can accurately switch the search space group, the terminal should also know the specific configuration of the search space group. Optionally, in an implementation, the method further includes:

[0142] receiving search space group configuration information sent by a network side device;

[0143] The search space group configuration information is used to indicate at least one of the following:

[0144] C11, one search space group is associated with one first control resource set, and the first control resource set includes one control resource set or one control resource set combination;

[0145] It should be noted that one control resource set can be understood as one independent control resource set, and one control resource set combination can be understood as a combination of at least two independent control resource sets, that is, at least two independent control resource sets are included in one control resource set combination. For example, each control resource set combination can contain F control resource sets in it, 1<F<=E, optionally, when a search space group is associated with E independent control resource sets. Optionally, the control resource set combination can also be called a concatenated control resource set.

[0146] Optionally, in one implementation, in this case, different frequency domain resource parts of one search space group are associated with different spatial domain information at different time instants or at the same time instant.

[0147] Wherein, the different frequency domain resource parts are determined by the availability of the resources in the first control resource set.

[0148] Optionally, in the case where the configured first control resource set overlaps with the unavailable resources, the available resources of the first control resource set are the remaining resources after excluding the overlapping part from the configured control resource set.

[0149] Optionally, the spatial domain information in the embodiments of the present application includes but is not limited to at least one of the following: transmit-receive point (Transmit-Receive Point, TRP) information, beam identification information, spatial relation information, spatial domain transmission filter information, spatial domain reception filter information, spatial filter information, transmission configuration indicator (Transmission Configuration Indicator, TCI) state information, quasi co-location (Quasi co-location, QCL) information, QCL parameters.

[0150] C12, one search space group is associated with at least two second control resource sets, and the at least two second control resource sets include at least one of the following: at least one control resource set, at least one control resource set combination;

[0151] For example, as shown in FIG. 6, when a search space group is associated with independent control resource set 1, control resource set 2 and control resource set 3, the search space group can also be associated with a concatenated control resource set of the three control resource sets, i.e., a control resource set combination, such as concatenated control resource set combination 1 or control resource set combination 2 in FIG. 6. For each control resource set combination, an identifier of the corresponding control resource set combination, monitoring slot periodicity and offset information (monitoringSlotPeriodicityAndOffset) of the search space group, etc. can be configured. The identifier of the control resource set combination can be uniformly numbered with the independent control resource set combination, for example, the identifier of control resource set combination 1 can be 4, and the identifier of control resource set combination 2 can be 5. Each control resource set combination can contain part or all of the independent control resource sets.

[0152] Optionally, in an implementation, in this case, the one search space group associated with at least two second control resource sets satisfies at least one of the following:

[0153] C121、In the same time, one search space group is associated with at least two second control resource sets;

[0154] C122、In the same time, one search space group is associated with only one second control resource set, and in different time or in the same time for different spatial information, one search space group is associated with different second control resource sets;

[0155] C123、In different time or in the same time for different spatial information, the number of second control resource sets associated with one search space group is different.

[0156] Optionally, in an implementation, the search space group configuration information includes the related parameters of the search space group, and the related parameters of the search space group are configured by at least one of the following:

[0157] D11、In the case that one search space group is associated with at least two second control resource sets, the value of the control resource set identifier associated with the search space group contains the identifier of at least two second control resource sets;

[0158] Optionally, in an implementation, the control resource set identifier associated with the search space group can be for a cell, i.e., all control resource sets configured for each terminal in the cell are uniformly identified and allocated.

[0159] Optionally, in an implementation, in the case that the related parameters of the search space group indicate the control resource set identifier associated with the search space group, the related parameters of the search space group further include:

[0160] The indication information is used to indicate a frequency domain unit where the control resource set associated with the search space group is located.

[0161] That is, in this case, when the control resource set identification associated with the search space group is indicated, the frequency domain unit where the search space is located can also be indicated at the same time, for example, the indication information includes the identification information of the frequency domain unit.

[0162] D12, the value of the target parameter includes one or at least two, and the target parameter includes at least one of the following: monitoring slot periodicity and offset information (monitoringSlotPeriodicityAndOffset) of the search space group, duration of the search space group, monitoring symbols within the slot (monitoringSymbolsWithinSlot) of the search space group, and the number of candidate PDCCHs corresponding to each aggregation level corresponding to the search space group (nrofCandidates);

[0163] Optionally, in this case, one implementation is that the at least two target parameters correspond to at least two control resource sets associated with the search space group or at least two parts of resources of one control resource set associated with the search space group.

[0164] For example, the at least two values of the monitoring slot periodicity and offset information of the search space group correspond to at least two control resource sets associated with the search space group, or correspond to at least two parts of resources of one control resource set.

[0165] Optionally, the period and offset corresponding to the search space group when associating different control resource sets are different.

[0166] Optionally, in one implementation, the available time of the at least two control resource sets or at least two parts of resources of one control resource set is not the same.

[0167] For example, when one search space group is associated with at least two independent control resource sets, the association can be performed in the manner of FIG. 4 or FIG. 5.

[0168] In FIG. 7, search space group 1 is associated with control resource set 1 and control resource set 2, and search space group 1 corresponds to one monitoring period and offset, and in each period, the UE monitors candidate PDCCHs on control resource set 1 and control resource set 2. In FIG. 8, search space group 1 is associated with control resource set 1 and control resource set 2, but control resource set 1 and control resource set 2 in search space group 1 correspond to one monitoring period and offset respectively, so the UE can monitor candidate PDCCHs on different control resource sets in different slots. That is, the search space group configures two monitoringSlotPeriodicityAndOffset. For example, the UE monitors candidate PDCCHs on control resource set 1 in slot 1 and slot 3, and monitors candidate PDCCHs on control resource set 2 in slot 2 and slot 4. Further, if the monitoring periods and offsets of control resource set 1 and control resource set 2 in search space group 1 correspond to overlapping slots, the UE simultaneously monitors candidate PDCCHs on control resource set 1 and control resource set 2 in the corresponding slots. For example, the UE monitors candidate PDCCHs on control resource set 1 in slot 5 and slot 10, and monitors candidate PDCCHs on control resource set 2 in slot 10 and slot 20, so the UE simultaneously monitors candidate PDCCHs on control resource set 1 and control resource set 2 in slot 10.

[0169] Optionally, the maximum number of candidate PDCCHs corresponding to each aggregation level of the search space group is determined according to the number of control resource sets associated with the search space group, and can be increased in multiples of the number of control resource sets.

[0170] Optionally, the maximum number of aggregation levels is determined according to the number of control resource sets associated with the search space group or the number of control resource sets in the combination of associated control resource sets, and can be increased in multiples of the number of control resource sets, and the value of the aggregation level can be {1, 2, 4, 8, 16, 32, 64…}.

[0171] Optionally, in an implementation, the maximum number of control resource sets and search space groups is determined according to at least one of the following:

[0172] E11, for a frequency domain unit with continuous frequency domain resources, or when the terminal can only activate one frequency domain unit at the same time, the maximum number of control resource sets corresponding to each frequency domain unit is a first value, and the maximum number of search space groups corresponding to each frequency domain unit is a second value;

[0173] It should be noted that the first value is a pre-defined maximum number of control resource sets corresponding to one frequency domain unit, for example, the first value can be 3; and the second value is a pre-defined maximum number of search space groups corresponding to one frequency domain unit, for example, the second value can be 10.

[0174] E12, for the first frequency domain units that are discontinuous in frequency domain resources, a maximum number of control resource sets corresponding to each first frequency domain unit is determined based on a first value and K, and a maximum number of search space sets corresponding to each first frequency domain unit is determined based on a second value and K, K being less than or equal to a number of second frequency domain units within the discontinuous first frequency domain units;

[0175] Optionally, the second frequency domain unit is a frequency domain unit smaller than a unit of the first frequency domain unit, and the first frequency domain unit may, for example, be a BWP, and the second frequency domain unit may be a sub-band.

[0176] For example, the maximum number of control resource sets corresponding to each first frequency domain unit is equal to a product of the first value and K, and the maximum number of search space sets corresponding to each first frequency domain unit is equal to a product of the second value and K.

[0177] E13, for the first frequency domain units that are discontinuous in frequency domain resources, a maximum number of control resource sets corresponding to each first frequency domain unit is determined based on a first value and M, and a maximum number of search space sets corresponding to each first frequency domain unit is determined based on a second value and M, M being less than or equal to a number of second frequency domain units within the discontinuous first frequency domain units that have a bandwidth exceeding a first preset value;

[0178] Optionally, the first preset value may be in units of MHz or PRB, and the value of the first preset value is different under different units; for example, M is less than or equal to a number of second frequency domain units within the discontinuous first frequency domain units that have a bandwidth exceeding X1 MHz or Y1 PRBs.

[0179] For example, the maximum number of control resource sets corresponding to each first frequency domain unit is equal to a product of the first value and M, and the maximum number of search space sets corresponding to each first frequency domain unit is equal to a product of the second value and M.

[0180] E14, when a terminal can simultaneously activate N frequency domain units, a maximum number of control resource sets that the terminal can be configured with is determined based on a first value and N, and a maximum number of search space sets is determined based on a second value and N, N being an integer greater than or equal to 2;

[0181] For example, the maximum number of control resource sets that the terminal can be configured with is equal to a product of the first value and N, and the maximum number of search space sets that the terminal can be configured with is equal to a product of the second value and N.

[0182] E15, when a terminal can simultaneously activate P frequency domain units, a maximum number of control resource sets that the terminal can be configured with is determined based on a first value and Q, and a maximum number of search space sets is determined based on a second value and Q, P being an integer greater than or equal to 2, and Q being a number of frequency domain units among the P frequency domain units that have a bandwidth exceeding a second preset value;

[0183] Optionally, the second preset value can be in MHz or PRB, and the value of the second preset value is different under different units; for example, Q is the number of frequency domain units whose bandwidth exceeds X2 MHz or Y2 PRBs.

[0184] For example, the maximum number of control resource sets that the terminal can configure is equal to the product of the first value and Q, and the maximum number of search space groups that the terminal can configure is equal to the product of the second value and Q.

[0185] It should be noted that, by flexibly configuring and switching the search space group, the embodiments of the present application can fully improve the resource utilization, improve the PDCCH transmission performance, and further improve the overall performance of the system.

[0186] As shown in FIG. 9, the embodiments of the present application provide an information transmission method, comprising:

[0187] Step 901, a network side device sends search space group configuration information to a terminal;

[0188] The search space group configuration information is used to indicate at least one of the following:

[0189] One search space group is associated with one first control resource set, and the first control resource set includes one control resource set or one control resource set combination.

[0190] One search space group is associated with at least two second control resource sets, and the at least two second control resource sets include at least one of the following: at least one control resource set, at least one control resource set combination.

[0191] Optionally, in the case where one search space group is associated with one control resource set, one search space group is associated with different frequency domain resource parts of the same first control resource set at different time instants or for different spatial domain information at the same time instant.

[0192] The different frequency domain resource parts are determined by the availability of the resources in the first control resource set.

[0193] Optionally, in the case where the configured first control resource set overlaps with the unavailable resources, the available resources of the first control resource set are the remaining resources after excluding the overlapping part with the unavailable resources in the configured control resource set.

[0194] Optionally, the one search space group being associated with at least two second control resource sets satisfies at least one of the following:

[0195] At the same time instant, one search space group is associated with at least two second control resource sets.

[0196] In the same moment, one search space group is only associated with one second control resource set, in different moments or in the same moment for different spatial information, one search space group is associated with different second control resource sets;

[0197] In different moments or in the same moment for different spatial information, the number of second control resource sets associated with one search space group is different.

[0198] Optionally, the search space group configuration information includes the related parameters of the search space group, and the related parameters of the search space group are configured by at least one of the following:

[0199] In the case that one search space group is associated with at least two second control resource sets, the value of the control resource set identifier associated with the search space group contains the identifier of at least two second control resource sets;

[0200] The value of the target parameter includes one or at least two, and the target parameter includes at least one of the following: monitoring slot period and offset information of the search space group, sustainable time of the search space group, monitoring symbol in the slot of the search space group, and the number of candidate PDCCHs corresponding to each aggregation level corresponding to the search space group.

[0201] Optionally, in the case that the related parameters of the search space group indicate the control resource set identifier associated with the search space group, the related parameters of the search space group further include:

[0202] Indicating information, the indicating information is used to indicate the frequency domain unit where the control resource set associated with the search space group is located.

[0203] Optionally, in the case that the value of the target parameter includes at least two, the at least two target parameters correspond to at least two control resource sets associated with the search space group or at least two parts of resources of one control resource set associated with the search space group respectively.

[0204] Optionally, the available time of the at least two control resource sets or the at least two parts of resources of one control resource set is different.

[0205] Optionally, the period and offset corresponding to the search space group when associating different control resource sets are different.

[0206] Optionally, the maximum value of the number of candidate PDCCHs corresponding to each aggregation level corresponding to the search space group is determined according to the number of control resource sets associated with the search space group.

[0207] Optionally, the maximum number of control resource sets and search space groups is determined according to at least one of the following:

[0208] For a frequency domain unit with continuous frequency domain resources, or when the terminal can only activate one frequency domain unit at the same time, the maximum number of control resource sets corresponding to each frequency domain unit is a first value, and the maximum number of search space groups corresponding to each frequency domain unit is a second value;

[0209] For a first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and K, and the maximum number of search space groups corresponding to each first frequency domain unit is determined based on the second value and K, K being less than or equal to the number of second frequency domain units within the non-continuous first frequency domain unit;

[0210] For a first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and M, and the maximum number of search space groups corresponding to each first frequency domain unit is determined based on the second value and M, M being less than or equal to the number of second frequency domain units within the non-continuous first frequency domain unit with a bandwidth exceeding a first preset value;

[0211] When the terminal can simultaneously activate N frequency domain units, the maximum number of control resource sets that the terminal can configure is determined based on the first value and N, and the maximum number of search space groups is determined based on the second value and N, N being an integer greater than or equal to 2;

[0212] When the terminal can simultaneously activate P frequency domain units, the maximum number of control resource sets that the terminal can configure is determined based on the first value and Q, and the maximum number of search space groups is determined based on the second value and Q, P being an integer greater than or equal to 2, and Q being the number of frequency domain units with a bandwidth exceeding a second preset value among the P frequency domain units.

[0213] Optionally, the method further comprises:

[0214] The network side device sends switching indication information to the terminal, the switching indication information being used to instruct the terminal to switch to a target search space group.

[0215] Optionally, the frequency domain unit comprises at least one of the following:

[0216] A frequency band, a carrier, a sub-band, a BWP, a frequency domain part.

[0217] It should be noted that all the descriptions above about the network side device are applicable to the embodiments of the information transmission method applied to the network side device, and can achieve the same technical effects, which will not be repeated here.

[0218] Embodiments of the present application also provide a listening device, which can be a communication device or a component in a communication device, such as a chip, for example. The communication device can be a terminal. Exemplarily, the terminal can include but is not limited to the types of terminal 11 listed above.

[0219] Embodiments of the present application further provide an information transmission apparatus. As an example, the information transmission apparatus can be a communication device or a component in a communication device, such as a chip. The communication device can be a network-side device or a server, etc. For example, the network-side device can include, but is not limited to, the types of network-side device 12 listed above, and embodiments of the present application are not limited in this regard.

[0220] The apparatus can include a receiving module, a sending module and a processing module. The receiving module, the sending module and the processing module can be implemented by software or by hardware. When implemented by hardware, the processing module can be implemented by a processor. For example, the processor can include a general-purpose processor, a special-purpose processor, etc., such as a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), an artificial intelligent (AI) processor, a graphics processing unit (GPU), an application specific integrated circuit (ASIC), a network processor (NP), a field programmable gate array (FPGA) or other programmable logic device, a gate circuit, a transistor, a discrete hardware component, etc. The receiving module and the sending module can be implemented by a communication interface, which can include one or more of a transceiver, a pin, a circuit, a bus, a radio frequency unit, etc.

[0221] Specifically, referring to FIG. 10, when the monitoring apparatus is a terminal or a component in a terminal, the monitoring apparatus 1000 includes a first processing module 1001 configured to switch, by the terminal, to a target search space set based on a switching criterion.

[0222] A second processing module configured to monitor, according to the target search space set, a physical downlink control channel (PDCCH) on at least part of frequency domain units of a serving cell, the serving cell including at least two frequency domain units, and a control resource set (CORESET) associated with the target search space set being configured on the at least part of frequency domain units.

[0223] Optionally, the switching criterion includes at least one of the following:

[0224] switching to the target search space set according to availability of a resource;

[0225] switching to the target search space set according to reception of switching indication information;

[0226] switch to a target search space set according to the received scheduling information;

[0227] switch to a target search space set in a case that a blind detection budget or a control channel element (CCE) budget does not satisfy a first threshold.

[0228] Optionally, the apparatus further includes:

[0229] a third processing module, configured to cancel monitoring of PDCCHs exceeding the blind detection budget or the CCE budget in a case that the blind detection budget or the CCE budget does not satisfy a second threshold.

[0230] Optionally, the validity of the resource is determined by at least one of the following:

[0231] by an activation and / or deactivation indication of the resource;

[0232] by a signaling configuration or a signaling indication corresponding to the resource.

[0233] Optionally, a resource that is activated and indicated or configured as a downlink transmission direction is determined as a valid resource.

[0234] Optionally, the specific implementation of switching to a target search space set according to the received scheduling information includes:

[0235] determining the target search space set to which to switch according to the target information;

[0236] The target information includes at least one of the following:

[0237] a number of frequency domain units scheduled by the scheduling information;

[0238] whether the scheduling information schedules data on all activated frequency domain units.

[0239] Optionally, the apparatus further includes:

[0240] a fourth processing module, configured to activate a control resource set associated with the target search space set or a frequency domain unit in which the control resource set is located, if the control resource set associated with the target search space set or the frequency domain unit in which the control resource set is located is not activated, when determining to switch to the target search space set.

[0241] Optionally, in a case that the switching criterion includes: switching to a target search space set in a case that a blind detection budget or a control channel element (CCE) budget does not satisfy a first threshold, a number of candidate PDCCHs corresponding to the target search space set to which to switch is less than a number of candidate PDCCHs corresponding to a search space set before switching.

[0242] Optionally, the number of candidate PDCCHs corresponding to the target search space group after switching is less than the number of candidate PDCCHs corresponding to the search space group before switching, including at least one of the following:

[0243] The number of control resource sets or time-frequency resources associated with the target search space group after switching is less than the number of control resource sets or time-frequency resources associated with the search space group before switching.

[0244] The aggregation level of the target search space group after switching is greater than the aggregation level of the search space group before switching.

[0245] Optionally, the cancellation of monitoring of PDCCHs exceeding the blind detection budget or the CCE budget includes at least one of the following:

[0246] Monitoring PDCCHs on the frequency domain unit according to a first rule, and canceling monitoring of candidate PDCCHs exceeding the blind detection budget or the CCE budget;

[0247] Monitoring PDCCHs on the control resource set according to a second rule, and canceling monitoring of PDCCHs on the control resource set exceeding the blind detection budget or the CCE budget;

[0248] The first rule includes any one of the following: descending order of number, ascending order of number; the second rule includes any one of the following: descending order of number, ascending order of number.

[0249] Optionally, the cancellation of monitoring of candidate PDCCHs exceeding the blind detection budget or the CCE budget includes:

[0250] Canceling candidate PDCCHs in the target frequency domain unit and candidate PDCCHs on the frequency domain unit after the target frequency domain unit exceeding the blind detection budget or the CCE budget;

[0251] Wherein, a part of the candidate PDCCHs in the target frequency domain unit do not exceed the blind detection budget or the CCE budget, and another part of the candidate PDCCHs in the target frequency domain unit exceed the blind detection budget or the CCE budget.

[0252] Optionally, the cancellation of monitoring of PDCCHs on the control resource set exceeding the blind detection budget or the CCE budget includes:

[0253] Canceling monitoring of PDCCHs on the target control resource set and the control resource set after the target control resource set;

[0254] Wherein, a part of the PDCCHs in the target control resource set do not exceed the blind detection budget or the CCE budget, and another part of the PDCCHs in the target control resource set exceed the blind detection budget or the CCE budget.

[0255] Optionally, the apparatus further comprises:

[0256] a receiving module, configured to receive search space set configuration information sent by a network side device;

[0257] The search space set configuration information is used to indicate at least one of the following:

[0258] One search space set is associated with one first control resource set, and the first control resource set comprises one control resource set or one control resource set combination.

[0259] One search space set is associated with at least two second control resource sets, and the at least two second control resource sets comprise at least one of the following: at least one control resource set, at least one control resource set combination.

[0260] Optionally, in the case where one search space set is associated with one first control resource set, one search space set is associated with different frequency domain resource parts of the same first control resource set at different time instants or for different spatial domain information at the same time instant.

[0261] The different frequency domain resource parts are determined by the availability of resources in the first control resource set.

[0262] Optionally, in the case where the configured first control resource set overlaps with unavailable resources, the available resources of the first control resource set are the remaining resources after excluding the overlapping part from the configured control resource set.

[0263] Optionally, the case where one search space set is associated with at least two second control resource sets satisfies at least one of the following:

[0264] At the same time instant, one search space set is associated with at least two second control resource sets.

[0265] At the same time instant, one search space set is associated with only one second control resource set, and at different time instants or for different spatial domain information at the same time instant, one search space set is associated with different second control resource sets.

[0266] At different time instants or for different spatial domain information at the same time instant, the number of second control resource sets associated with one search space set is different.

[0267] Optionally, the search space set configuration information comprises the related parameters of the search space set, and the related parameters of the search space set are configured by at least one of the following:

[0268] In the case where one search space set is associated with at least two second control resource sets, the value of the control resource set identifier associated with the search space set comprises the identifiers of the at least two second control resource sets.

[0269] The value of the target parameter includes one or at least two, and the target parameter includes at least one of the following: monitoring slot period and offset information of the search space group, sustainable time of the search space group, monitoring symbol in the time slot of the search space group, and the number of candidate PDCCHs corresponding to each aggregation level corresponding to the search space group.

[0270] Optionally, in the case that the related parameters of the search space group are indicated in the case that the control resource set identification associated with the search space group is indicated, the related parameters of the search space group further include:

[0271] Indication information, the indication information is used to indicate the frequency domain unit where the control resource set associated with the search space group is located.

[0272] Optionally, in the case that the value of the target parameter includes at least two, the at least two target parameters correspond to at least two control resource sets associated with the search space group or at least two partial resources of one control resource set associated with the search space group.

[0273] Optionally, the available time of the at least two control resource sets or the at least two partial resources of one control resource set is different.

[0274] Optionally, the period and offset corresponding to the search space group are different when the search space group is associated with different control resource sets.

[0275] Optionally, the maximum value of the number of candidate PDCCHs corresponding to each aggregation level corresponding to the search space group is determined according to the number of control resource sets associated with the search space group.

[0276] Optionally, the maximum number of control resource sets and search space groups is determined according to at least one of the following:

[0277] For a frequency domain resource continuous frequency domain unit, or when the terminal can only activate one frequency domain unit at the same time, the maximum number of control resource sets corresponding to each frequency domain unit is a first value, and the maximum number of search space groups corresponding to each frequency domain unit is a second value.

[0278] For a first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on a first value and K, and the maximum number of search space groups corresponding to each first frequency domain unit is determined based on a second value and K, K is less than or equal to the number of second frequency domain units within the non-continuous first frequency domain unit.

[0279] For the first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and M, and the maximum number of search space groups corresponding to each first frequency domain unit is determined based on the second value and M, M is less than or equal to the number of second frequency domain units with bandwidths exceeding the first preset value in the non-continuous first frequency domain units;

[0280] When the terminal can simultaneously activate N frequency domain units, the maximum number of control resource sets that the terminal can configure is determined based on the first value and N, and the maximum number of search space groups is determined based on the second value and N, N is an integer greater than or equal to 2;

[0281] When the terminal can simultaneously activate P frequency domain units, the maximum number of control resource sets that the terminal can configure is determined based on the first value and Q, and the maximum number of search space groups is determined based on the second value and Q, P is an integer greater than or equal to 2, and Q is the number of frequency domain units with bandwidths exceeding the second preset value in the P frequency domain units.

[0282] Optionally, the frequency domain unit includes at least one of the following:

[0283] Frequency band, carrier, sub-band, bandwidth part (BWP), frequency domain part.

[0284] The monitoring device provided by the embodiments of the present application can implement each process implemented by the method embodiment of FIG. 2 and achieve the same technical effects. To avoid repetition, details are not described here.

[0285] Referring to FIG. 11, when the information transmission device is a network side device or a component in the network side device, the information transmission device 1100 includes a first sending module 1101 configured to send search space group configuration information to a terminal;

[0286] The search space group configuration information is used to indicate at least one of the following:

[0287] One search space group is associated with one first control resource set, and the first control resource set includes one control resource set or one control resource set combination.

[0288] One search space group is associated with at least two second control resource sets, and the at least two second control resource sets include at least one of the following: at least one control resource set, at least one control resource set combination.

[0289] Optionally, in the case where one search space group is associated with one control resource set, one search space group is associated with different frequency domain resource parts of the same first control resource set at different time instants or for different spatial domain information at the same time instant.

[0290] The different frequency domain resource parts are determined by the availability of resources in the first control resource set.

[0291] Optionally, in case that the configured first control resource set overlaps with the unavailable resource, the available resource of the first control resource set is the remaining resource after excluding the overlapping part with the unavailable resource in the configured control resource set.

[0292] Optionally, the at least one of the following is satisfied in case that one search space set is associated with at least two second control resource sets:

[0293] In the same time instant, one search space set is associated with at least two second control resource sets.

[0294] In the same time instant, one search space set is associated with only one second control resource set, and in different time instants or in the same time instant, one search space set is associated with different second control resource sets for different spatial domain information.

[0295] In different time instants or in the same time instant, one search space set is associated with different numbers of second control resource sets for different spatial domain information.

[0296] Optionally, the search space set related parameters in the search space set configuration information are configured by at least one of the following:

[0297] In case that one search space set is associated with at least two second control resource sets, the value of the control resource set identifier associated with the search space set contains the identifiers of the at least two second control resource sets.

[0298] The value of the target parameter includes one or at least two, and the target parameter includes at least one of the following: the monitoring slot period and offset information of the search space set, the available time of the search space set, the monitoring symbol in the time slot of the search space set, and the number of candidate PDCCHs corresponding to each aggregation level of the search space set.

[0299] Optionally, in case that the search space set related parameters indicate the control resource set identifier associated with the search space set, the search space set related parameters further include:

[0300] Indication information, which is used to indicate the frequency domain unit where the control resource set associated with the search space set is located.

[0301] Optionally, in case that the value of the target parameter includes at least two, the at least two target parameters correspond to at least two control resource sets associated with the search space set or at least two parts of resources of one control resource set associated with the search space set respectively.

[0302] Optionally, the available time of the at least two control resource sets or the at least two parts of resources of one control resource set is different.

[0303] Optionally, the search space group corresponds to different periodicity and offset when associated with different control resource sets.

[0304] Optionally, the maximum number of candidate PDCCHs corresponding to each aggregation level of the search space group is determined according to the number of control resource sets associated with the search space group.

[0305] Optionally, the maximum number of control resource sets and the maximum number of search space groups are determined according to at least one of the following:

[0306] For a frequency domain unit with continuous frequency domain resources, or when the terminal can only activate one frequency domain unit at the same time, the maximum number of control resource sets corresponding to each frequency domain unit is a first value, and the maximum number of search space groups corresponding to each frequency domain unit is a second value.

[0307] For a first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and K, and the maximum number of search space groups corresponding to each first frequency domain unit is determined based on the second value and K, K being less than or equal to the number of second frequency domain units within the non-continuous first frequency domain unit.

[0308] For a first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and M, and the maximum number of search space groups corresponding to each first frequency domain unit is determined based on the second value and M, M being less than or equal to the number of second frequency domain units within the non-continuous first frequency domain unit with a bandwidth exceeding a first preset value.

[0309] When the terminal can activate N frequency domain units at the same time, the maximum number of control resource sets that the terminal can configure is determined based on the first value and N, and the maximum number of search space groups is determined based on the second value and N, N being an integer greater than or equal to 2.

[0310] When the terminal can activate P frequency domain units at the same time, the maximum number of control resource sets that the terminal can configure is determined based on the first value and Q, and the maximum number of search space groups is determined based on the second value and Q, P being an integer greater than or equal to 2, and Q being the number of frequency domain units with a bandwidth exceeding a second preset value among the P frequency domain units.

[0311] Optionally, the apparatus further comprises:

[0312] The second sending module is configured to send switching indication information to the terminal, the switching indication information being used to instruct the terminal to switch to a target search space group.

[0313] Optionally, the frequency domain unit comprises at least one of the following:

[0314] Frequency band, carrier, sub-band, BWP, frequency domain part.

[0315] The information transmission apparatus provided in the embodiments of the present application can implement each process of the method embodiment of Figure 9 and achieve the same technical effects. To avoid repetition, details are not described herein.

[0316] Optionally, as shown in Figure 12, the embodiments of the present application further provide a communication device 1200, which comprises a processor 1201 and a memory 1202, and the memory 1202 stores programs or instructions executable on the processor 1201. For example, when the communication device 1200 is a terminal, the programs or instructions, when executed by the processor 1201, implement each step of the above-mentioned monitoring method embodiments and can achieve the same technical effects. When the communication device 1200 is a network side device, the programs or instructions, when executed by the processor 1201, implement each step of the above-mentioned information transmission method embodiments and can achieve the same technical effects. To avoid repetition, details are not described herein.

[0317] Preferably, the embodiments of the present application further provide a terminal, which comprises a processor, a memory, programs or instructions stored in the memory and executable on the processor, and the programs or instructions, when executed by the processor, implement each process of the above-mentioned monitoring method embodiments and can achieve the same technical effects. The terminal can be the monitoring apparatus shown in Figure 10. Specifically, Figure 13 is a schematic diagram of a hardware structure of a terminal implementing the embodiments of the present application.

[0318] The terminal 1300 comprises, but is not limited to, at least part of components such as a radio frequency unit 1301, a network module 1302, an audio output unit 1303, an input unit 1304, a sensor 1305, a display unit 1306, a user input unit 1307, an interface unit 1308, a memory 1309, and a processor 1310.

[0319] Those skilled in the art can understand that the terminal 1300 can further comprise a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 1310 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 13 does not constitute a limitation on the terminal, and the terminal can comprise more or fewer components than those shown, or combine certain components, or different component arrangements, which are not described herein.

[0320] It should be understood that in the embodiments of the present application, the input unit 1304 can include a graphics processor 13041 and a microphone 13042, and the graphics processor 13041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1306 can include a display panel 13061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 1307 includes at least one of a touch panel 13071 and other input devices 13072. The touch panel 13071 is also called a touch screen. The touch panel 13071 can include two parts of a touch detection device and a touch controller. The other input devices 13072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), a trackball, a mouse, a joystick, and the like, which will not be described here.

[0321] In the embodiments of the present application, after the radio frequency unit 1301 receives the downlink data from the access network device, it can be transmitted to the processor 1310 for processing. In addition, the radio frequency unit 1301 can send uplink data to the network side device. Generally, the radio frequency unit 1301 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0322] The memory 1309 can be used to store software programs or instructions and various data. The memory 1309 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, at least one application program required by a function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 1309 can include a volatile memory or a non-volatile memory, or the memory 1309 can include both volatile and non-volatile memories. The non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM), a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synch link DRAM (SLDRAM), and a Direct Rambus RAM (DRRAM). The memory 1309 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[0323] The processor 1310 can include one or more processing units; optionally, the processor 1310 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 1310.

[0324] The processor 1310 is configured to switch to a target search space group based on a switching criterion.

[0325] According to the target search space group, a physical downlink control channel (PDCCH) is monitored on at least part of frequency domain units of a serving cell, the serving cell including at least two frequency domain units, and the at least part of frequency domain units being configured with a control resource set (CORESET) associated with the target search space group.

[0326] Optionally, the switching criterion includes at least one of:

[0327] According to the validity of the resource, switching to the target search space group;

[0328] According to the received switching indication information, switching to the target search space group;

[0329] According to the received scheduling information, switching to the target search space group;

[0330] In a case where a blind detection budget or a control channel element (CCE) budget does not satisfy a first threshold, switching to the target search space group.

[0331] Optionally, the processor is further configured to:

[0332] In a case where the blind detection budget or the CCE budget does not satisfy a second threshold, canceling monitoring of the PDCCH exceeding the blind detection budget or the CCE budget.

[0333] Optionally, the validity of the resource is determined by at least one of:

[0334] Determination by an activation and / or deactivation indication of the resource;

[0335] Determination by signaling configuration or signaling indication corresponding to the resource.

[0336] Optionally, a resource that is activated and indicated or configured as a downlink transmission direction is determined as a valid resource.

[0337] Optionally, the processor 1310 is configured to:

[0338] According to the target information, determining the target search space group to which to switch;

[0339] The target information includes at least one of:

[0340] The number of frequency domain units scheduled by the scheduling information;

[0341] Whether the scheduling information schedules data on all activated frequency domain units.

[0342] Optionally, the processor 1310 is further configured to:

[0343] If a control resource set associated with the target search space group or a frequency domain unit where the control resource set is located is not activated, the terminal activates the control resource set associated with the target search space group or the frequency domain unit where the control resource set is located when determining to switch to the target search space group.

[0344] Optionally, in a case where the switching criterion includes: in a case where a blind detection budget or a control channel element (CCE) budget does not satisfy a first threshold, switching to a target search space group, a number of candidate PDCCHs corresponding to the target search space group to which the switching is performed is less than a number of candidate PDCCHs corresponding to a search space group before the switching.

[0345] Optionally, the number of candidate PDCCHs corresponding to the target search space group to which the switching is performed is less than the number of candidate PDCCHs corresponding to the search space group before the switching, includes at least one of:

[0346] a number of control resource sets associated with the target search space group to which the switching is performed or time-frequency resources is less than a number of control resource sets associated with the search space group before the switching or time-frequency resources;

[0347] an aggregation level of the target search space group to which the switching is performed is greater than an aggregation level of the search space group before the switching.

[0348] Optionally, the canceling of monitoring of the PDCCHs exceeding the blind detection budget or the CCE budget includes at least one of:

[0349] monitoring the PDCCHs on the frequency domain units according to a first rule, and canceling monitoring of the candidate PDCCHs exceeding the blind detection budget or the CCE budget;

[0350] monitoring the PDCCHs on the control resource sets according to a second rule, and canceling monitoring of the PDCCHs on the control resource sets exceeding the blind detection budget or the CCE budget;

[0351] The first rule includes any one of: a number from large to small, and a number from small to large. The second rule includes any one of: a number from large to small, and a number from small to large.

[0352] Optionally, the canceling of monitoring of the candidate PDCCHs exceeding the blind detection budget or the CCE budget includes:

[0353] canceling the candidate PDCCHs exceeding the blind detection budget or the CCE budget in the target frequency domain unit and the candidate PDCCHs on the frequency domain units after the target frequency domain unit;

[0354] The part of the candidate PDCCHs in the target frequency domain unit does not exceed the blind detection budget or the CCE budget, and the other part of the candidate PDCCHs in the target frequency domain unit exceeds the blind detection budget or the CCE budget.

[0355] Optionally, the PDCCH monitoring on the control resource set exceeding the blind detection budget or the CCE budget is canceled, including:

[0356] The PDCCH monitoring on the target control resource set and the control resource set after the target control resource set is canceled.

[0357] The part of the PDCCHs in the target control resource set does not exceed the blind detection budget or the CCE budget, and the other part of the PDCCHs in the target control resource set exceeds the blind detection budget or the CCE budget.

[0358] Optionally, the radio frequency unit 1301 is configured to:

[0359] Receive the search space group configuration information sent by the network side device;

[0360] The search space group configuration information is used to indicate at least one of the following:

[0361] One search space group is associated with one first control resource set, and the first control resource set includes one control resource set or one control resource set combination.

[0362] One search space group is associated with at least two second control resource sets, and the at least two second control resource sets include at least one of the following: at least one control resource set, at least one control resource set combination.

[0363] Optionally, in the case that one search space group is associated with one first control resource set, one search space group is associated with different frequency domain resource parts of the same first control resource set at different time instants or for different spatial domain information at the same time instant.

[0364] The different frequency domain resource parts are determined by the availability of the resources in the first control resource set.

[0365] Optionally, in the case that the configured first control resource set overlaps with the unavailable resources, the available resources of the first control resource set are the remaining resources after excluding the overlapping part with the unavailable resources in the configured control resource set.

[0366] Optionally, the one search space group being associated with at least two second control resource sets satisfies at least one of the following:

[0367] At the same time instant, one search space group is associated with at least two second control resource sets.

[0368] In the same moment, one search space group is only associated with one second control resource set, in different moments or in the same moment for different spatial domain information, one search space group is associated with different second control resource sets;

[0369] In different moments or in the same moment for different spatial domain information, the number of second control resource sets associated with one search space group is different.

[0370] Optionally, the search space group configuration information includes the related parameters of the search space group, and the related parameters of the search space group are configured by at least one of the following:

[0371] In the case that one search space group is associated with at least two second control resource sets, the value of the control resource set identifier associated with the search space group contains the identifier of at least two second control resource sets;

[0372] The value of the target parameter includes one or at least two, and the target parameter includes at least one of the following: monitoring slot period and offset information of the search space group, sustainable time of the search space group, monitoring symbol in the slot of the search space group, and the number of candidate PDCCHs corresponding to each aggregation level corresponding to the search space group.

[0373] Optionally, in the case that the related parameters of the search space group indicate the control resource set identifier associated with the search space group, the related parameters of the search space group further include:

[0374] Indicating information, the indicating information is used to indicate the frequency domain unit where the control resource set associated with the search space group is located.

[0375] Optionally, in the case that the value of the target parameter includes at least two, the at least two target parameters correspond to at least two control resource sets associated with the search space group or at least two parts of resources of one control resource set associated with the search space group respectively.

[0376] Optionally, the available time of the at least two control resource sets or the at least two parts of resources of one control resource set is different.

[0377] Optionally, the period and offset corresponding to the search space group are different when the search space group is associated with different control resource sets.

[0378] Optionally, the maximum value of the number of candidate PDCCHs corresponding to each aggregation level corresponding to the search space group is determined according to the number of control resource sets associated with the search space group.

[0379] Optionally, the maximum number of control resource sets and search space groups is determined according to at least one of the following:

[0380] For a frequency domain unit with continuous frequency domain resources, or when the terminal can only activate one frequency domain unit at the same time, the maximum number of control resource sets corresponding to each frequency domain unit is a first value, and the maximum number of search space groups corresponding to each frequency domain unit is a second value;

[0381] For a first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and K, and the maximum number of search space groups corresponding to each first frequency domain unit is determined based on the second value and K, K being less than or equal to the number of second frequency domain units within the non-continuous first frequency domain unit;

[0382] For a first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and M, and the maximum number of search space groups corresponding to each first frequency domain unit is determined based on the second value and M, M being less than or equal to the number of second frequency domain units within the non-continuous first frequency domain unit with a bandwidth exceeding a first preset value;

[0383] When the terminal can activate N frequency domain units at the same time, the maximum number of control resource sets that the terminal can configure is determined based on the first value and N, and the maximum number of search space groups is determined based on the second value and N, N being an integer greater than or equal to 2;

[0384] When the terminal can activate P frequency domain units at the same time, the maximum number of control resource sets that the terminal can configure is determined based on the first value and Q, and the maximum number of search space groups is determined based on the second value and Q, P being an integer greater than or equal to 2, and Q being the number of frequency domain units with a bandwidth exceeding a second preset value among the P frequency domain units.

[0385] Optionally, the frequency domain unit includes at least one of the following:

[0386] A frequency band, a carrier, a sub-band, a bandwidth part (BWP), and a frequency domain part.

[0387] It can be understood that the implementation process of each implementation manner mentioned in the embodiment can refer to the related description of the terminal side in the method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0388] The embodiment of the present application also provides a terminal, comprising a processor and a communication interface, the processor is used to switch to a target search space group based on a switching criterion;

[0389] According to the target search space group, a physical downlink control channel (PDCCH) is monitored on at least part of the frequency domain units of a serving cell, the serving cell including at least two frequency domain units, and the at least part of the frequency domain units being configured with a control resource set (COSESET) associated with the target search space group.

[0390] Optionally, the switching criterion includes at least one of the following:

[0391] switch to the target search space set according to validity of the resource;

[0392] switch to the target search space set according to the received switching indication information;

[0393] switch to the target search space set according to the received scheduling information;

[0394] switch to the target search space set in a case where a blind detection budget or a control channel element (CCE) budget does not satisfy a first threshold.

[0395] Optionally, the processor is further configured to:

[0396] cancel monitoring of the PDCCHs exceeding the blind detection budget or the CCE budget in a case where the blind detection budget or the CCE budget does not satisfy a second threshold.

[0397] Optionally, the validity of the resource is determined by at least one of the following:

[0398] determination by an activation and / or deactivation indication of the resource;

[0399] determination by a signaling configuration or a signaling indication corresponding to the resource.

[0400] Optionally, the resource activated and indicated or configured as a downlink transmission direction is determined as a valid resource.

[0401] Optionally, the processor is configured to:

[0402] determine the target search space set to switch to according to the target information;

[0403] The target information includes at least one of the following:

[0404] a number of frequency domain units scheduled by the scheduling information;

[0405] whether the scheduling information schedules data on all activated frequency domain units.

[0406] Optionally, the processor is further configured to:

[0407] If a control resource set associated with the target search space set or a frequency domain unit where the control resource set is located is not activated, the terminal activates the control resource set associated with the target search space set or the frequency domain unit where the control resource set is located when determining to switch to the target search space set.

[0408] Optionally, in a case that the switching criterion comprises: in a case that the blind detection budget or the control channel element (CCE) budget does not satisfy a first threshold, switching to a target search space set, a number of candidate PDCCHs corresponding to the target search space set to which the switching is performed is less than a number of candidate PDCCHs corresponding to a search space set before the switching.

[0409] Optionally, the number of candidate PDCCHs corresponding to the target search space set to which the switching is performed is less than the number of candidate PDCCHs corresponding to the search space set before the switching, comprises at least one of:

[0410] a number of control resource sets or time-frequency resources associated with the target search space set to which the switching is performed is less than a number of control resource sets or time-frequency resources associated with the search space set before the switching;

[0411] an aggregation level of the target search space set to which the switching is performed is greater than an aggregation level of the search space set before the switching.

[0412] Optionally, the cancelling of monitoring of the PDCCHs exceeding the blind detection budget or the CCE budget comprises at least one of:

[0413] monitoring the PDCCHs on the frequency domain units according to a first rule, and cancelling monitoring of the candidate PDCCHs exceeding the blind detection budget or the CCE budget;

[0414] monitoring the PDCCHs on the control resource sets according to a second rule, and cancelling monitoring of the PDCCHs on the control resource sets exceeding the blind detection budget or the CCE budget;

[0415] The first rule comprises any one of: descending order of numbers, ascending order of numbers; and the second rule comprises any one of: descending order of numbers, ascending order of numbers.

[0416] Optionally, the cancelling of monitoring of the candidate PDCCHs exceeding the blind detection budget or the CCE budget comprises:

[0417] cancelling the candidate PDCCHs exceeding the blind detection budget or the CCE budget in a target frequency domain unit and the candidate PDCCHs on frequency domain units after the target frequency domain unit;

[0418] The target frequency domain unit includes a part of the candidate PDCCHs not exceeding the blind detection budget or the CCE budget and another part of the candidate PDCCHs exceeding the blind detection budget or the CCE budget.

[0419] Optionally, the cancelling of monitoring of the PDCCHs on the control resource sets exceeding the blind detection budget or the CCE budget comprises:

[0420] cancel PDCCH monitoring on the target control resource set and a control resource set after the target control resource set;

[0421] wherein a part of the PDCCHs in the target control resource set does not exceed the blind detection budget or the CCE budget, and another part of the PDCCHs in the target control resource set exceeds the blind detection budget or the CCE budget.

[0422] Optionally, the communication interface is configured to:

[0423] receive search space set configuration information sent by the network side device;

[0424] wherein the search space set configuration information is configured to indicate at least one of the following:

[0425] one search space set is associated with one first control resource set, and the first control resource set comprises one control resource set or one control resource set combination;

[0426] one search space set is associated with at least two second control resource sets, and the at least two second control resource sets comprise at least one of the following: at least one control resource set, at least one control resource set combination.

[0427] Optionally, in the case where one search space set is associated with one first control resource set, at different time instants or for different spatial domain information, one search space set is associated with different frequency domain resource parts of the same first control resource set;

[0428] wherein the different frequency domain resource parts are determined by the availability of resources in the first control resource set.

[0429] Optionally, in the case where the configured first control resource set overlaps with the unavailable resources, the available resources of the first control resource set are the remaining resources after excluding the overlapping part from the configured control resource set.

[0430] Optionally, the case where one search space set is associated with at least two second control resource sets satisfies at least one of the following:

[0431] at the same time instant, one search space set is associated with at least two second control resource sets;

[0432] at the same time instant, one search space set is associated with only one second control resource set, and at different time instants or for different spatial domain information, one search space set is associated with different second control resource sets;

[0433] at different time instants or for different spatial domain information, the number of second control resource sets associated with one search space set is different.

[0434] Optionally, the search space group related parameters in the search space group configuration information comprise at least one of the following:

[0435] In a case where one search space group is associated with at least two second control resource sets, a value of the control resource set identifier associated with the search space group comprises identifiers of the at least two second control resource sets;

[0436] The value of the target parameter comprises one or at least two, and the target parameter comprises at least one of the following: monitoring slot period and offset information of the search space group, sustainable time of the search space group, monitoring symbol in a slot of the search space group, and the number of candidate PDCCHs corresponding to each aggregation level of the search space group.

[0437] Optionally, in a case where the search space group related parameters indicate the control resource set identifier associated with the search space group, the search space group related parameters further comprise:

[0438] Indicating information for indicating a frequency domain unit in which the control resource set associated with the search space group is located.

[0439] Optionally, in a case where the value of the target parameter comprises at least two, the at least two target parameters correspond to at least two control resource sets associated with the search space group or at least two partial resources of one control resource set associated with the search space group respectively.

[0440] Optionally, the available time of the at least two control resource sets or the at least two partial resources of one control resource set is different.

[0441] Optionally, the period and offset corresponding to the search space group are different when the search space group is associated with different control resource sets.

[0442] Optionally, the maximum value of the number of candidate PDCCHs corresponding to each aggregation level of the search space group is determined according to the number of control resource sets associated with the search space group.

[0443] Optionally, the maximum number of control resource sets and search space groups is determined according to at least one of the following:

[0444] For a frequency domain unit with continuous frequency domain resources, or when the terminal can only activate one frequency domain unit at the same time, the maximum number of control resource sets corresponding to each frequency domain unit is a first value, and the maximum number of search space groups corresponding to each frequency domain unit is a second value.

[0445] For the first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and K, and the maximum number of corresponding search space groups is determined based on the second value and K, K is less than or equal to the number of second frequency domain units in the non-continuous first frequency domain unit;

[0446] For the first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and M, and the maximum number of corresponding search space groups is determined based on the second value and M, M is less than or equal to the number of second frequency domain units with bandwidth exceeding the first preset value in the non-continuous first frequency domain unit;

[0447] When the terminal can simultaneously activate N frequency domain units, the maximum number of control resource sets that the terminal can configure is determined based on the first value and N, and the maximum number of search space groups is determined based on the second value and N, N is an integer greater than or equal to 2;

[0448] When the terminal can simultaneously activate P frequency domain units, the maximum number of control resource sets that the terminal can configure is determined based on the first value and Q, and the maximum number of search space groups is determined based on the second value and Q, P is an integer greater than or equal to 2, and Q is the number of frequency domain units with bandwidth exceeding the second preset value in the P frequency domain units.

[0449] Optionally, the frequency domain unit includes at least one of the following:

[0450] Frequency band, carrier, sub-band, bandwidth part (BWP), frequency domain part.

[0451] Embodiments of the present application also provide a network side device, which can be the information transmission apparatus shown in FIG. 11. As shown in FIG. 14, the network side device 1400 includes an antenna 1401, a radio frequency device 1402, a baseband device 1403, a processor 1404 and a memory 1405. The antenna 1401 is connected with the radio frequency device 1402. In the uplink direction, the radio frequency device 1402 receives information through the antenna 1401 and sends the received information to the baseband device 1403 for processing. In the downlink direction, the baseband device 1403 processes the information to be sent and sends it to the radio frequency device 1402, and the radio frequency device 1402 processes the received information and sends it out through the antenna 1401.

[0452] The method performed by the network side device in the above embodiments can be implemented in the baseband device 1403, which includes a baseband processor.

[0453] The baseband device 1403 can include at least one baseband board on which a plurality of chips are disposed, as shown in FIG. 14, one of the chips being, for example, a baseband processor connected with the memory 1405 through a bus interface to invoke a program in the memory 1405 to perform the network-side device operation shown in the above method embodiment.

[0454] The network-side device can further include a network interface 1406, which is, for example, a common public radio interface (CPRI).

[0455] Specifically, the network-side device 1400 of the embodiment of the present application further includes instructions or programs stored in the memory 1405 and executable on the processor 1404, and the processor 1404 invokes the instructions or programs in the memory 1405 to perform the method executed by the modules shown in FIG. 11 and achieve the same technical effects, and thus repeated description is omitted.

[0456] The embodiment of the present application further provides a network-side device, including a processor and a communication interface, the communication interface being configured to send search space group configuration information to a terminal;

[0457] The search space group configuration information is configured to indicate at least one of the following:

[0458] One search space group is associated with one first control resource set, and the first control resource set includes one control resource set or one control resource set combination.

[0459] One search space group is associated with at least two second control resource sets, and the at least two second control resource sets include at least one of the following: at least one control resource set, at least one control resource set combination.

[0460] Optionally, in the case where one search space group is associated with one control resource set, one search space group is associated with different frequency domain resource parts of the same first control resource set at different time instants or for different spatial domain information at the same time instant.

[0461] The different frequency domain resource parts are determined by the availability of the resources in the first control resource set.

[0462] Optionally, in the case where the configured first control resource set overlaps with unavailable resources, the available resources of the first control resource set are the remaining resources after excluding the overlapping part from the configured control resource set.

[0463] Optionally, the case where one search space group is associated with at least two second control resource sets satisfies at least one of the following:

[0464] In the same moment, one search space group is associated with at least two second control resource sets;

[0465] In the same moment, one search space group is associated with one second control resource set, and in different moments or in the same moment for different spatial domain information, one search space group is associated with different second control resource sets;

[0466] In different moments or in the same moment for different spatial domain information, the number of second control resource sets associated with one search space group is different.

[0467] Optionally, the search space group configuration information includes the related parameters of the search space group, and the related parameters of the search space group are configured by at least one of the following:

[0468] In the case that one search space group is associated with at least two second control resource sets, the value of the control resource set identifier associated with the search space group contains the identifiers of the at least two second control resource sets;

[0469] The value of the target parameter includes one or at least two, and the target parameter includes at least one of the following: monitoring slot period and offset information of the search space group, sustainable time of the search space group, monitoring symbol in the slot of the search space group, and the number of candidate PDCCHs corresponding to each aggregation level corresponding to the search space group.

[0470] Optionally, in the case that the related parameters of the search space group indicate the control resource set identifier associated with the search space group, the related parameters of the search space group further include:

[0471] Indicating information, the indicating information is used to indicate the frequency domain unit where the control resource set associated with the search space group is located.

[0472] Optionally, in the case that the value of the target parameter includes at least two, the at least two target parameters correspond to at least two control resource sets associated with the search space group or at least two parts of resources of one control resource set associated with the search space group respectively.

[0473] Optionally, the available time of the at least two control resource sets or the at least two parts of resources of one control resource set is different.

[0474] Optionally, the period and offset corresponding to the search space group are different when the search space group is associated with different control resource sets.

[0475] Optionally, the maximum value of the number of candidate PDCCHs corresponding to each aggregation level corresponding to the search space group is determined according to the number of control resource sets associated with the search space group.

[0476] Optionally, the maximum number of control resource sets and search space groups is determined according to at least one of the following:

[0477] For a frequency domain unit with continuous frequency domain resources, or when the terminal can only activate one frequency domain unit at the same time, the maximum number of control resource sets corresponding to each frequency domain unit is a first value, and the maximum number of search space groups corresponding to each frequency domain unit is a second value.

[0478] For a first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and K, and the maximum number of search space groups corresponding to each first frequency domain unit is determined based on the second value and K, K being less than or equal to the number of second frequency domain units within the non-continuous first frequency domain unit.

[0479] For a first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and M, and the maximum number of search space groups corresponding to each first frequency domain unit is determined based on the second value and M, M being less than or equal to the number of second frequency domain units within the non-continuous first frequency domain unit with a bandwidth exceeding a first preset value.

[0480] When the terminal can activate N frequency domain units at the same time, the maximum number of control resource sets that the terminal can be configured is determined based on the first value and N, and the maximum number of search space groups is determined based on the second value and N, N being an integer greater than or equal to 2.

[0481] When the terminal can activate P frequency domain units at the same time, the maximum number of control resource sets that the terminal can be configured is determined based on the first value and Q, and the maximum number of search space groups is determined based on the second value and Q, P being an integer greater than or equal to 2, and Q being the number of frequency domain units with a bandwidth exceeding a second preset value among the P frequency domain units.

[0482] Optionally, the communication interface is further configured to:

[0483] send switching indication information to the terminal, the switching indication information being used to instruct the terminal to switch to a target search space group.

[0484] Optionally, the frequency domain unit includes at least one of the following:

[0485] a frequency band, a carrier, a sub-band, a BWP, a frequency domain part.

[0486] Embodiments of the present application also provide a readable storage medium having a program or instructions stored thereon, which, when executed by a processor, implements each process of the above-mentioned monitoring method or information transmission method embodiments and achieves the same technical effects. To avoid repetition, details are not described here.

[0487] The processor is the processor in the terminal or the network side device in the above-mentioned embodiments. The readable storage medium can be non-volatile and non-transient. The readable storage medium can include a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0488] The embodiment of the present application further provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, the processor is used to run programs or instructions, realizes each process of the above-mentioned monitoring method or information transmission method embodiment, and can achieve the same technical effects. To avoid repetition, details are not described herein.

[0489] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0490] The embodiment of the present application further provides a computer program / program product, which is stored in a storage medium, and is executed by at least one processor to realize each process of the above-mentioned monitoring method or information transmission method embodiment, and can achieve the same technical effects. To avoid repetition, details are not described herein.

[0491] The embodiment of the present application further provides a communication system, which comprises a terminal and a network side device, wherein the terminal can be used to execute the steps of the above-mentioned monitoring method, and the network side device can be used to execute the steps of the above-mentioned information transmission method.

[0492] It should be noted that in this document, the term "comprising" or "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus including the element. In addition, it should be pointed out that the scope of the method and apparatus in the embodiment of the present application is not limited to the order of functions shown or discussed, but can also include functions performed in a substantially simultaneous manner or in the opposite order, for example, the described method can be performed in an order different from that described, and various steps can be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0493] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned example methods can be realized by means of a computer software product and a general hardware platform as necessary, and of course can also be realized by hardware. The computer software product is stored in a storage medium (such as a ROM, a RAM, a magnetic disc, an optical disc, etc.), and includes a plurality of instructions for enabling a terminal or a network side device to execute the method described in each embodiment of the present application.

[0494] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative rather than limiting. Those skilled in the art can make many forms of embodiments under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims, and these embodiments all belong to the protection of the present application.

Claims

1. A method of monitoring, comprising: a terminal switching to a target search space set based on a switching criterion; the terminal monitoring a physical downlink control channel (PDCCH) on at least part of frequency domain units of a serving cell according to the target search space set, the serving cell comprising at least two frequency domain units, and the at least part of frequency domain units being configured with a control resource set associated with the target search space set.

2. The method of claim 1, wherein, the switching criterion comprising at least one of: switching to the target search space set according to availability of resources; switching to the target search space set according to reception of switching indication information; switching to the target search space set according to reception of scheduling information; switching to the target search space set in a case where a blind detection budget or a control channel element (CCE) budget does not satisfy a first threshold. 3.The method of any one of claims 1 or 2, further comprising: the terminal cancelling monitoring of PDCCHs exceeding the blind detection budget or the CCE budget in a case where a blind detection budget or a CCE budget does not satisfy a second threshold.

4. The method of claim 2, wherein, the availability of the resources being determined by at least one of: determination by activation and / or deactivation indication of the resources; determination by signaling configuration or signaling indication corresponding to the resources.

5. The method of claim 4, wherein, determination of resources that are activated and indicated or configured as downlink transmission direction as available resources.

6. The method of claim 2, wherein, the switching to the target search space set according to reception of the scheduling information comprising: determination of the target search space set to switch to according to target information; wherein the target information comprises at least one of: a number of frequency domain units scheduled by the scheduling information; whether the scheduling information schedules data on all activated frequency domain units. 7.The method of any one of claims 1-6, further comprising: the terminal activating a control resource set associated with the target search space set or frequency domain units where the control resource set is located in a case where the control resource set associated with the target search space set or the frequency domain units where the control resource set is located is not activated when determining to switch to the target search space set.

8. The method of claim 2, wherein, in a case where the switching criterion comprises switching to the target search space set in a case where a blind detection budget or a control channel element (CCE) budget does not satisfy a first threshold, a number of candidate PDCCHs corresponding to the target search space set to switch to is less than a number of candidate PDCCHs corresponding to a search space set before switching.

9. The method of claim 8, wherein, the number of candidate PDCCHs corresponding to the target search space set to switch to being less than the number of candidate PDCCHs corresponding to the search space set before switching comprising at least one of: a number of control resource sets or time-frequency resources associated with the target search space set to switch to being less than a number of control resource sets or time-frequency resources associated with the search space set before switching; an aggregation level of the target search space set to switch to being greater than an aggregation level of the search space set before switching.

10. The method of claim 3, wherein, the cancelling monitoring of PDCCHs exceeding the blind detection budget or the CCE budget comprising at least one of: monitoring PDCCHs on frequency domain units according to a first rule and cancelling monitoring of candidate PDCCHs exceeding the blind detection budget or the CCE budget; monitor PDCCH on the control resource set according to the second rule, cancel monitoring PDCCH on the control resource set exceeding the blind detection budget or the CCE budget; The first rule includes any one of the following: number from large to small, number from small to large; the second rule includes any one of the following: number from large to small, number from small to large.

11. The method of claim 10, wherein, The cancel monitoring of the candidate PDCCH exceeding the blind detection budget or the CCE budget includes: Cancel monitoring of the candidate PDCCH exceeding the blind detection budget or the CCE budget in the target frequency domain unit and the candidate PDCCH on the frequency domain unit after the target frequency domain unit; Wherein, a part of the candidate PDCCH in the target frequency domain unit does not exceed the blind detection budget or the CCE budget, and another part of the candidate PDCCH in the target frequency domain unit exceeds the blind detection budget or the CCE budget.

12. The method of claim 10, wherein, The cancel monitoring of the PDCCH on the control resource set exceeding the blind detection budget or the CCE budget includes: Cancel monitoring of the PDCCH on the target control resource set and the control resource set after the target control resource set; Wherein, a part of the PDCCH in the target control resource set does not exceed the blind detection budget or the CCE budget, and another part of the PDCCH in the target control resource set exceeds the blind detection budget or the CCE budget.

13. The method of any one of claims 1-12, further comprising: receiving search space set configuration information sent by a network side device; The search space set configuration information is used to indicate at least one of the following: One search space set is associated with one first control resource set, and the first control resource set includes one control resource set or one control resource set combination; One search space set is associated with at least two second control resource sets, and the at least two second control resource sets include at least one of the following: at least one control resource set, at least one control resource set combination.

14. The method of claim 13, wherein, In the case where one search space set is associated with one first control resource set, one search space set is associated with different frequency domain resource parts of the same first control resource set at different times or for different spatial domain information at the same time; Wherein, different frequency domain resource parts are determined by the availability of resources in the first control resource set.

15. The method of claim 14, wherein, In the case where the configured first control resource set overlaps with the unavailable resources, the available resources of the first control resource set are the remaining resources after excluding the overlapping part with the unavailable resources in the configured control resource set.

16. The method of claim 13, wherein, The one search space set associated with at least two second control resource sets satisfies at least one of the following: At the same time, one search space set is associated with at least two second control resource sets; At the same time, one search space set is associated with only one second control resource set, and one search space set is associated with different second control resource sets at different times or for different spatial domain information at the same time; At different times or for different spatial domain information at the same time, the number of second control resource sets associated with one search space set is different.

17. The method of any one of claims 13-16, wherein, The search space set configuration information includes the related parameters of the search space set, and the related parameters of the search space set are configured by at least one of the following: In a case that one search space set is associated with at least two second control resource sets, a value of a search space set associated control resource set identifier contains identifiers of the at least two second control resource sets; A value of a target parameter includes one or at least two, and the target parameter includes at least one of the following: monitoring slot period and offset information of a search space set, sustainable time of a search space set, monitoring symbol in a time slot of a search space set, and a number of candidate PDCCHs corresponding to each aggregation level corresponding to a search space set.

18. The method of claim 17, wherein, In a case that the related parameters of the search space set indicate the control resource set identifier associated with the search space set, the related parameters of the search space set further include: Indication information for indicating a frequency domain unit where the control resource set associated with the search space set is located.

19. The method of claim 17, wherein, In a case that the value of the target parameter includes at least two, the at least two target parameters correspond to at least two control resource sets associated with the search space set or at least two parts of a control resource set associated with the search space set, respectively.

20. The method of claim 19, wherein, The available time of the at least two control resource sets or the at least two parts of the control resource set is different.

21. The method of claim 19, wherein, The period and offset corresponding to the search space set are different when the search space set is associated with different control resource sets.

22. The method of claim 19, wherein, The maximum value of the number of candidate PDCCHs corresponding to each aggregation level corresponding to the search space set is determined according to the number of control resource sets associated with the search space set.

23. The method of any one of claims 1-22, wherein, The maximum number of control resource sets and search space sets is determined according to at least one of the following: For a frequency domain resource continuous frequency domain unit, or when a terminal can only activate one frequency domain unit at the same time, the maximum number of control resource sets corresponding to each frequency domain unit is a first value, and the maximum number of search space sets corresponding to each frequency domain unit is a second value; For a first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and K, and the maximum number of search space sets corresponding to each first frequency domain unit is determined based on the second value and K, K is less than or equal to the number of second frequency domain units within the first frequency domain unit with non-continuous frequency domain resources; For a first frequency domain unit with non-continuous frequency domain resources, the maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and M, and the maximum number of search space sets corresponding to each first frequency domain unit is determined based on the second value and M, M is less than or equal to the number of second frequency domain units within the first frequency domain unit with non-continuous frequency domain resources, and the bandwidth of the second frequency domain unit exceeds a first preset value; When a terminal can activate N frequency domain units at the same time, the maximum number of control resource sets that the terminal can configure is determined based on the first value and N, and the maximum number of search space sets is determined based on the second value and N, N is an integer greater than or equal to 2; When a terminal can activate P frequency domain units at the same time, the maximum number of control resource sets that the terminal can configure is determined based on the first value and Q, and the maximum number of search space sets is determined based on the second value and Q, P is an integer greater than or equal to 2, and Q is the number of frequency domain units with a bandwidth exceeding a second preset value in the P frequency domain units.

24. The method of any one of claims 1-23, wherein, The frequency domain unit includes at least one of the following: Frequency band, carrier, sub-band, bandwidth part BWP, and frequency domain part.

25. An information transmission method, comprising: The network-side device sends search space group configuration information to the terminal; The search space group configuration information is used to indicate at least one of the following: One search space group is associated with one first control resource set, and the first control resource set includes one control resource set or one control resource set combination. One search space group is associated with at least two second control resource sets, and the at least two second control resource sets include at least one of the following: at least one control resource set or at least one control resource set combination.

26. The method of claim 25, wherein, In the case where one search space group is associated with one control resource set, at different time instants or for different spatial domain information, one search space group is associated with different frequency domain resource parts of the same first control resource set. The different frequency domain resource parts are determined by the availability of resources in the first control resource set.

27. The method of claim 26, wherein, In the case where the configured first control resource set overlaps with unavailable resources, the available resources of the first control resource set are the remaining resources after excluding the overlapping part from the configured control resource set.

28. The method of claim 25, wherein, The at least two second control resource sets associated with one search space group satisfy at least one of the following: At the same time instant, one search space group is associated with at least two second control resource sets. At the same time instant, one search space group is associated with only one second control resource set, and at different time instants or for different spatial domain information, one search space group is associated with different second control resource sets. At different time instants or for different spatial domain information, the number of second control resource sets associated with one search space group is different.

29. The method of any one of claims 25-28, wherein, The search space group configuration information includes the related parameters of the search space group, and the related parameters of the search space group are configured by at least one of the following: In the case where one search space group is associated with at least two second control resource sets, the value of the control resource set identifier associated with the search space group includes the identifiers of the at least two second control resource sets. The value of the target parameter includes one or at least two, and the target parameter includes at least one of the following: monitoring slot period and offset information of the search space group, sustainable time of the search space group, monitoring symbol within the slot of the search space group, and the number of candidate PDCCHs corresponding to each aggregation level of the search space group.

30. The method of claim 29, wherein, In the case where the search space group configuration information includes the identifier of the control resource set associated with the search space group, the search space group configuration information further includes: Indicating information used to indicate the frequency domain unit where the control resource set associated with the search space group is located.

31. The method of claim 29, wherein, In the case where the value of the target parameter includes at least two, the at least two target parameters correspond to at least two control resource sets associated with the search space group or at least two parts of one control resource set associated with the search space group, respectively.

32. The method of claim 31, wherein, The available time of the at least two control resource sets or the at least two parts of one control resource set is different.

33. The method of claim 31, wherein, The period and offset corresponding to the search space group associated with different control resource sets are different.

34. The method of claim 31, wherein, A maximum value of a number of candidate PDCCHs corresponding to each aggregation level corresponding to the search space group is determined according to a number of control resource sets associated with the search space group.

35. The method of any one of claims 25-34, wherein, A maximum number of control resource sets and a maximum number of search space groups are determined according to at least one of the following: For a frequency domain unit that is continuous in frequency domain resources, or when the terminal can only activate one frequency domain unit at the same time, a maximum number of control resource sets corresponding to each frequency domain unit is a first value, and a maximum number of search space groups corresponding to each frequency domain unit is a second value; For a first frequency domain unit that is discontinuous in frequency domain resources, a maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and K, and a maximum number of search space groups corresponding to each first frequency domain unit is determined based on the second value and K, K being less than or equal to a number of second frequency domain units within the discontinuous first frequency domain unit; For a first frequency domain unit that is discontinuous in frequency domain resources, a maximum number of control resource sets corresponding to each first frequency domain unit is determined based on the first value and M, and a maximum number of search space groups corresponding to each first frequency domain unit is determined based on the second value and M, M being less than or equal to a number of second frequency domain units within the discontinuous first frequency domain unit, the second frequency domain units having a bandwidth exceeding a first preset value; When the terminal can simultaneously activate N frequency domain units, a maximum number of control resource sets that the terminal can be configured is determined based on the first value and N, and a maximum number of search space groups is determined based on the second value and N, N being an integer greater than or equal to 2; When the terminal can simultaneously activate P frequency domain units, a maximum number of control resource sets that the terminal can be configured is determined based on the first value and Q, and a maximum number of search space groups is determined based on the second value and Q, P being an integer greater than or equal to 2, and Q being a number of frequency domain units having a bandwidth exceeding a second preset value among the P frequency domain units.

36. The method of claim 25, further comprising: receiving, by the terminal, handover indication information from a network side device, the handover indication information indicating that the terminal is to handover to a target search space group.

37. The method of claim 30 or 35, wherein, The frequency domain unit includes at least one of the following: a frequency band, a carrier, a sub-band, a BWP, a frequency domain part.

38. An apparatus for monitoring, comprising: a first processing module configured to handover to a target search space group based on a handover criterion; a second processing module configured to monitor a physical downlink control channel (PDCCH) on at least part of frequency domain units of a serving cell according to the target search space group, the serving cell including at least two frequency domain units, and the at least part of frequency domain units being configured with a control resource set associated with the target search space group.

39. The apparatus of claim 38, further comprising: a receiving module configured to receive search space group configuration information sent by a network side device; wherein the search space group configuration information indicates at least one of the following: one search space group is associated with one first control resource set, the first control resource set including one control resource set or one control resource set combination; one search space group is associated with at least two second control resource sets, the at least two second control resource sets including at least one of the following: at least one control resource set, at least one control resource set combination. 40.A terminal, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions, when executed by the processor, implement steps of the monitoring method according to any one of claims 1 to 24. 41.An apparatus for information transmission, comprising: a first sending module configured to send search space group configuration information to a terminal; wherein the search space group configuration information is used to indicate at least one of the following: one search space group is associated with one first control resource set, the first control resource set comprising one control resource set or one control resource set combination; one search space group is associated with at least two second control resource sets, the at least two second control resource sets comprising at least one of the following: at least one control resource set, at least one control resource set combination. 42.The apparatus of claim 41, further comprising: a second sending module configured to send switching indication information to the terminal, the switching indication information being used to indicate that the terminal switches to a target search space group. 43.A network side device, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions, when executed by the processor, implement steps of the information transmission method according to any one of claims 25 to 37. 44.A readable storage medium, the readable storage medium storing programs or instructions, the programs or instructions, when executed by a processor, implement steps of the monitoring method according to any one of claims 1 to 24 or steps of the information transmission method according to any one of claims 25 to 37. 45.A computer program product, comprising computer instructions, the computer instructions, when executed by a processor, implement steps of the monitoring method according to any one of claims 1 to 24 or steps of the information transmission method according to any one of claims 25 to 37.

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