CN116158040A

CN116158040A - Channel transmission method, terminal equipment and network equipment

Info

Publication number: CN116158040A
Application number: CN202080103964.2A
Authority: CN
Inventors: 陈文洪; 方昀
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2023-05-23
Also published as: WO2022077346A1

Abstract

The embodiment of the application provides a method for transmitting a channel, terminal equipment and network equipment, and can improve the detection performance of PDCCH. The channel transmission method comprises the following steps: the terminal equipment determines a detection mode adopted by a PDCCH in a target CORESET according to the first configuration information, wherein the target CORESET is configured with a plurality of TCI states; wherein, the detection mode is one of the following three modes: the first way is to detect each PDCCH in the target CORESET using the multiple TCI states; the second mode is to respectively detect different PDCCHs carrying the same information in the target CORESET by adopting the plurality of TCI states; a third way is to detect each PDCCH in the target CORESET with one of the multiple TCI states.

Description

Channel transmission method, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the field of communication, and more particularly, to a channel transmission method, a terminal device and a network device.

Background

In a New Radio (NR) system, multiple Transmission/Reception points (TRP) may transmit the same physical downlink control channel (Physical Downlink Control Channel, PDCCH) to improve the detection performance of the PDCCH. Specifically, according to whether PDCCHs transmitted by different TRPs are transmitted using a single frequency network (Single Frequency Network, SFN), the following two enhancement modes can be classified:

In the first enhancement mode, the plurality of TRPs transmit the PDCCH in the SFN mode, that is, the plurality of TRPs transmit the PDCCH that occupies the same physical resources (such as the same control resource set (Control Resource Set, CORESET) and search space). From the point of view of terminal reception, only one PDCCH needs to be detected. Since the channels between different TRPs and terminals are different, the network device needs to configure multiple transmission configuration indication (Transmission Configuration Indicator, TCI) states for the CORESET where the PDCCH is located, corresponding to the multiple TRPs, respectively. The terminal needs to obtain large-scale parameters of the PDCCH and a channel estimation filter based on a plurality of TCI states, so as to detect the PDCCH. Enhancement mode-a scene (such as high-speed rail) generally used for high-speed transmission, the channel strength of the PDCCH is enhanced by using an SFN transmission mode, and the detection performance is improved.

In the second enhancement mode, the plurality of TRPs transmit the PDCCH in a repeated transmission mode, namely the PDCCH transmitted by the plurality of TRPs carries the same control information, but is transmitted on different time domain resources or frequency domain resources. On the terminal side, it is necessary to receive PDCCHs transmitted by different TRPs, respectively, and combine the received signals or the detected control information, thereby obtaining a final detection result. The network device also needs to configure a plurality of TCI states for CORESET where the PDCCH is located, corresponding to a plurality of TRPs, respectively, and different TCI states are used for detecting repeated transmission of different PDCCHs. The second enhancement mode can be used for a scene of high-reliability low-delay communication (Ultra-Reliable and Low Latency Communication, URLLC), and the same control information is repeatedly transmitted on different resources through different TRPs, so that additional diversity gain is obtained, and the PDCCH detection performance is improved.

However, both enhancements described above need to be implemented by configuring the CORESET with multiple TCI states, i.e., their configuration signaling is similar. In this case, the terminal side cannot know which enhancement mode is adopted by the current network side, and cannot detect the PDCCH in a corresponding mode.

Disclosure of Invention

The embodiment of the application provides a channel transmission method, terminal equipment and network equipment, wherein the terminal equipment can detect PDCCH according to other configurations by adopting a receiving mode corresponding to a network side transmitting mode under the condition that the purpose and application scene of a plurality of currently configured TCI states are not known, so that the detection performance of the PDCCH is improved.

In a first aspect, a method of channel transmission is provided, the method comprising:

the terminal equipment determines a detection mode adopted by a PDCCH in a target CORESET according to the first configuration information, wherein the target CORESET is configured with a plurality of TCI states;

wherein, the detection mode is one of the following three modes:

the first way is to detect each PDCCH in the target CORESET using the multiple TCI states;

the second mode is to respectively detect different PDCCHs carrying the same information in the target CORESET by adopting the plurality of TCI states;

A third way is to detect each PDCCH in the target CORESET with one of the multiple TCI states.

In a second aspect, a method of channel transmission is provided, the method comprising:

the network equipment sends first configuration information and a plurality of TCI states of a target CORESET to the terminal equipment, wherein the first configuration information is used for the terminal equipment to determine a detection mode adopted by a PDCCH in the target CORESET;

wherein, the detection mode is one of the following three modes:

In a third aspect, a terminal device is provided for performing the method in the first aspect.

Specifically, the terminal device comprises functional modules for performing the method in the first aspect described above.

In a fourth aspect, a network device is provided for performing the method in the second aspect.

In particular, the network device comprises functional modules for performing the method in the second aspect described above.

In a fifth aspect, a terminal device is provided comprising a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the first aspect.

In a sixth aspect, a network device is provided that includes a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the second aspect described above.

In a seventh aspect, there is provided an apparatus for implementing the method of any one of the first to second aspects.

Specifically, the device comprises: a processor for calling and running a computer program from a memory, causing a device in which the apparatus is installed to perform the method of any of the first to second aspects as described above.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to execute the method of any one of the first to second aspects.

In a ninth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to second aspects above.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any of the first to second aspects described above.

Through the technical scheme, the terminal equipment can determine the detection mode adopted by the PDCCH in the target CORESET configured with a plurality of TCI states according to the first configuration information. That is, the terminal device may detect the PDCCH according to other configurations by adopting a receiving mode corresponding to the network side transmission mode without knowing the purpose and application scenario of the multiple TCI states configured at present, thereby improving the detection performance of the PDCCH. The problem that the PDCCH cannot be correctly demodulated due to the fact that the PDCCH is detected in an error mode can be effectively avoided.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture to which embodiments of the present application apply.

Fig. 2 is a schematic diagram of physical resources of a PDCCH provided in the present application.

Fig. 3 is a schematic diagram of a correspondence between CORESET and search space provided in the present application.

Fig. 4 is a schematic diagram of a TCI state configuration of a PDSCH provided in the present application.

Fig. 5 is a schematic flow chart of a method for channel transmission according to an embodiment of the present application.

Fig. 6 is a schematic diagram of determining a detection manner according to time domain resource configuration information of a target CORESET according to an embodiment of the present application.

Fig. 7 is a schematic diagram of determining a detection manner according to repeated configuration information of a target CORESET according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a network device provided according to an embodiment of the present application.

Fig. 10 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of an apparatus provided according to an embodiment of the present application.

Fig. 12 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden for the embodiments herein, are intended to be within the scope of the present application.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new Radio, NR system evolution system, LTE over unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR over unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, universal mobile telecommunication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), fifth Generation communication (5 th-Generation, 5G) system, or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, or internet of vehicles (Vehicle to everything, V2X) communication, etc., and the embodiments of the present application may also be applied to these communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, and a Stand Alone (SA) fabric scenario.

Optionally, the communication system in the embodiments of the present application may be applied to unlicensed spectrum, where unlicensed spectrum may also be considered as shared spectrum; alternatively, the communication system in the embodiments of the present application may also be applied to licensed spectrum, where licensed spectrum may also be considered as non-shared spectrum.

Embodiments of the present application describe various embodiments in connection with network devices and terminal devices, where a terminal device may also be referred to as a User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, user Equipment, or the like.

The terminal device may be a STATION (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) STATION, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In embodiments of the present application, the terminal device may be deployed on land, including indoor or outdoor, hand-held, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), or a wireless terminal device in smart home (smart home), and the like.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, where the network device may be an Access Point (AP) in a WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an Access Point, a vehicle device, a wearable device, a network device or a base station (gNB) in an NR network, a network device in a PLMN network of future evolution, or a network device in an NTN network, etc.

By way of example and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite, or the like. Alternatively, the network device may be a base station disposed on land, in a water area, or the like.

In this embodiment of the present application, a network device may provide a service for a cell, where a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to a network device (e.g., a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

Exemplary, a communication system 100 to which embodiments of the present application apply is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area.

Fig. 1 illustrates one network device and two terminal devices by way of example, and alternatively, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage area of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that a device having a communication function in a network/system in an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, where the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The terminology used in the description section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

It should be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, or the like.

In the embodiment of the present application, the "predefining" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, terminal devices and network devices), and the specific implementation of the present application is not limited. Such as predefined may refer to what is defined in the protocol.

In this embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in this application.

For better understanding of the embodiments of the present application, the NR downlink control channels related to the present application are described.

In the NR system, the terminal equipment determines the resource for detecting the PDCCH through the CORESET and the search space configured by the network side. The CORESET is used to determine a frequency domain resource size (e.g., the number of occupied physical resource blocks (physical resource block, PRBs)) and a time domain resource size (e.g., the number of occupied orthogonal frequency division multiplexing (Orthogonal frequency-division multiplexing, OFDM) symbols) of the PDCCH in one slot, including a frequency domain resource start position, a frequency domain resource length, a time domain resource length, and the like. And the search space is used for determining the time domain resource position of the PDCCH, including a time domain resource starting position and a monitoring period. From a CORESET and a search space configuration, the terminal may determine the physical resource location of the detected PDCCH, as the resources identified by shading in fig. 2.

Specifically, the network side configures up to three CORESETs through higher layer signaling, where each CORESET has its own CORESET Identifier (ID). Meanwhile, the network side can also configure at least one search space through high-level signaling, and the configuration parameters of each search space comprise the ID, aggregation level, search space type and the like of the associated CORESET. Each search space can only be associated with one CORESET, but one CORESET can be associated with multiple search spaces, as shown in fig. 3. The Search Space type includes a configuration of whether the Search Space is a public Search Space (Common Search Space, CSS) or a terminal equipment specific Search Space (UE Search Space, USS), and a downlink control information (Downlink Control Information, DCI) format (format) that the terminal needs to detect in the Search Space. If the search space is CSS, a search space type (searchSpaceType) in the search space is configured to be Common (Common), and the corresponding DCI format to be detected includes at least one of DCI format 2_0, DCI format 2_1, DCI format 2_2, DCI format 2_3, DCI format 0_0, DCI format 1_0, and other formats, i.e., the DCI is generally used for transmission of scheduling control information. If the search space is USS, the corresponding DCI formats to be detected include DCI format 0_0 And DCI format 1_0 (formats 0-0-And-1-0), or DCI format 0_1 And DCI format 1_1 (formats 0-1-And-1-1), i.e. the DCI is generally used to schedule uplink or downlink data transmission.

For better understanding of the embodiments of the present application, a Quasi co-located (QCL) indication of downlink signaling related to the present application is described.

In the NR system, the network device may configure a corresponding TCI state for each downlink signal or downlink channel, to indicate a QCL reference signal corresponding to the target downlink signal or the target downlink channel, so that the terminal receives the target downlink signal or the target downlink channel based on the reference signal.

Wherein, a TCI state may comprise the following configuration:

a TCI state ID for identifying a TCI state;

QCL information 1;

QCL information 2.

Wherein, one QCL information further comprises the following information:

the QCL type (type) configuration may be one of QCL type a, QCL type B, QCL type C, QCL type D;

QCL reference signal configuration includes a cell ID where a reference signal is located, a bandwidth Part (BWP) ID, and an identification of the reference signal (which may be a channel state information reference signal (Channel State Information Reference Signal, CSI-RS) resource ID or a synchronization signal block (Synchronization Signal Block, SSB) index).

Wherein the QCL type of at least one of the QCL information 1 and the QCL information 2 must be one of typeA, typeB, typeC, and the QCL type of the other QCL information (if configured) must be QCL type D.

Wherein, the definition of different QCL type configurations is as follows:

'QCL-TypeA': doppler shift (Doppler shift), doppler spread (Doppler spread), average delay (average delay), delay spread (delay spread) };

'QCL-TypeB': { Doppler shift (Doppler shift), doppler spread (Doppler spread) };

'QCL-TypeC': { Doppler shift (Doppler shift), average delay (average delay) };

'QCL-TypeD': spatial reception parameters (Spatial Rx parameter).

If the network device configures the QCL reference signal of the target downlink channel to be the reference SSB or the reference CSI-RS resource through the TCI state and the QCL type is configured to be typeA, typeB or typeC, the terminal device may assume that the target downlink channel is the same as the target macro-scale parameter of the reference SSB or the reference CSI-RS resource, so as to receive with the same corresponding receiving parameter, where the target macro-scale parameter is determined through QCL type configuration. Similarly, if the network device configures the QCL reference signal of the target downlink channel to be the reference SSB or the reference CSI-RS resource through the TCI state and the QCL type is configured to be type D, the terminal device may receive the target downlink channel using the same reception beam (i.e., spatial Rx parameter) as that used to receive the reference SSB or the reference CSI-RS resource. In general, the target downlink channel and its reference SSB or reference CSI-RS resource are transmitted by the same TRP or the same antenna panel (panel) or the same beam on the network side. If the transmission TRP or transmission panel or transmission beam of the two downlink signals or downlink channels are different, different TCI states are typically configured.

For the downlink control channel, the TCI state may be indicated by means of radio resource control (Radio Resource Control, RRC) signaling or RRC signaling+mac signaling. For the downlink data channel, the available set of TCI states is indicated by RRC signaling, part of the TCI states are activated by medium access control (Media Access Control, MAC) layer signaling, and finally one or two TCI states are indicated from the activated TCI states by a TCI state indication field in the DCI for the PDSCH scheduled by the DCI. For example, as shown in fig. 4, the network device indicates N candidate TCI states through RRC signaling, activates K TCI states through MAC signaling, and finally indicates 1 or 2 used TCI states from among the activated TCI states through a TCI state indication field in DCI.

In the NR system, a plurality of TRPs may transmit the same PDCCH to improve the detection performance of the PDCCH. Specifically, according to whether PDCCHs transmitted by different TRPs employ SFN transmission, the following two enhancement modes can be classified:

in the first enhancement mode, the plurality of TRPs transmit the PDCCH in an SFN mode, that is, the PDCCH transmitted by the plurality of TRPs occupies the same physical resource (such as the same CORESET and search space). From the point of view of terminal reception, only one PDCCH needs to be detected. Since the channels between different TRPs and the terminal are different, the network device needs to configure multiple TCI states for the CORESET where the PDCCH is located, corresponding to the multiple TRPs respectively. The terminal needs to obtain large-scale parameters of the PDCCH and a channel estimation filter based on a plurality of TCI states, so as to detect the PDCCH. Enhancement mode-a scene (such as high-speed rail) generally used for high-speed transmission, the channel strength of the PDCCH is enhanced by using an SFN transmission mode, and the detection performance is improved.

In the second enhancement mode, the plurality of TRPs transmit the PDCCH in a repeated transmission mode, namely the PDCCH transmitted by the plurality of TRPs carries the same control information, but is transmitted on different time domain resources or frequency domain resources. On the terminal side, it is necessary to receive PDCCHs transmitted by different TRPs, respectively, and combine the received signals or the detected control information, thereby obtaining a final detection result. The network device also needs to configure a plurality of TCI states for CORESET where the PDCCH is located, corresponding to a plurality of TRPs, respectively, and different TCI states are used for detecting repeated transmission of different PDCCHs. The second enhancement mode can be used for a URLLC scene, and the same control information is repeatedly transmitted on different resources through different TRPs, so that additional diversity gain is obtained, and the PDCCH detection performance is improved.

Both enhancement modes can improve the detection performance of the PDCCH, but the application scene and the transmission mode are different. Correspondingly, the channel estimation and PDCCH detection modes of the terminal are different. However, both enhancements described above need to be implemented by configuring the CORESET with multiple TCI states, i.e., their configuration signaling is similar. In this case, the terminal side cannot know which enhancement mode is adopted by the current network side, and cannot detect the PDCCH in a corresponding mode. If an erroneous approach is taken, the PDCCH transmission reliability is affected.

Based on the above-mentioned problems, the present application proposes a channel transmission scheme, where a terminal device can detect PDCCH according to other configurations by adopting a receiving mode corresponding to a network side transmission mode without knowing the purpose and application scenario of multiple TCI states configured at present, so as to improve the detection performance of PDCCH.

The technical scheme of the present application is described in detail below through specific embodiments.

Fig. 5 is a schematic flow chart of a method 200 of channel transmission according to an embodiment of the present application, as shown in fig. 5, the method 200 may include at least some of the following:

s210, the network equipment sends first configuration information and a plurality of TCI states of a target CORESET to the terminal equipment, wherein the first configuration information is used for determining a detection mode adopted by PDCCH in the target CORESET by the terminal equipment;

s220, the terminal equipment receives the first configuration information and a plurality of TCI states of the target CORESET, which are sent by the network equipment;

s230, the terminal equipment determines a detection mode adopted by the PDCCH in the target CORESET according to the first configuration information.

That is, in the present embodiment, the target CORESET is configured with multiple TCI states.

Wherein, the detection mode is one of the following three modes:

Optionally, in the third mode, one TCI state of the plurality of TCI states is a first TCI state of the plurality of TCI states, or one TCI state of the plurality of TCI states is a TCI state with a lowest TCI state index of the plurality of TCI states.

It should be noted that, the first mode and/or the third mode may be similar to the first enhancement mode, and the second mode may be similar to the second enhancement mode.

Specifically, in the first manner, for each PDCCH in the target CORESET, the terminal device uses the multiple TCI states to detect. For example, the terminal device obtains multiple groups of channel large-scale parameters from the multiple TCI states respectively, and obtains a filter for channel estimation according to the large-scale parameters, so as to perform channel estimation of each PDCCH based on the filter and PDCCH DMRS, and obtain a channel of each PDCCH; and detecting the PDCCH based on the obtained PDCCH channel. For another example, the terminal device obtains a plurality of reception beams from the plurality of TCI states, respectively; for each PDCCH, receiving PDCCH based on the received beams respectively; and detecting each PDCCH based on PDCCHs obtained by different receiving beams.

Specifically, in the second mode, the terminal device detects different PDCCHs carrying the same information in the target CORESET by using the multiple TCI states respectively. For example, the network device may configure the CORESET with two TCI states for detecting two different PDCCHs carrying the same information in the target CORESET, respectively. The control information carried in the two PDCCHs are identical, but the time-frequency resources they occupy may be different, e.g., may occupy different OFDM symbols or slots. In another implementation, the two PDCCHs may be PDCCHs of two PDCCH candidates (candidates).

Specifically, in the third mode, the terminal device detects each PDCCH in the target CORESET using only one TCI state of the plurality of TCI states. In other words, other TCI states of the plurality of TCI states are not used for PDCCH detection. For example, the one TCI state may be a first TCI state of the plurality of TCI states, or a second TCI state of the plurality of TCI states, or a TCI state having a lowest TCI state ID of the plurality of TCI states, or a TCI state determined by the terminal from the plurality of TCI states according to other configuration information, and so on. In one embodiment, the network device configures the target CORESET with two TCI states, but the terminal device only adopts the first one of the TCI states, the second TCI state not being used for PDCCH detection.

In one embodiment, the terminal device may determine, according to the first configuration information, a detection manner adopted by the PDCCH in the target CORESET from a first manner and a second manner, that is, the first configuration information is in some configurations, the detection manner is the first manner, and in other configurations, the detection manner is the second manner. Or, the terminal device may determine, according to the first configuration information, a detection mode adopted by the PDCCH in the target CORESET from the first mode and the third mode, that is, the first configuration information is in some configurations, the detection mode is the first mode, and in other configurations, the detection mode is the third mode. Or, the terminal device may determine, according to the first configuration information, a detection mode adopted by the PDCCH in the target CORESET from the second mode and the third mode, that is, the first configuration information is in some configurations, the detection mode is the second mode, and in other configurations, the detection mode is the third mode. Or, the terminal device may determine, according to the first configuration information, a detection manner adopted by the PDCCH in the target CORESET from the first manner, the second manner and the third manner, that is, the first configuration information is in some configurations, the detection manner is in the first manner, in other configurations, the detection manner is in the second manner, and in other configurations, the detection manner is in the third manner.

Optionally, in an embodiment of the present application, the first configuration information includes, but is not limited to, at least one of:

time domain resource configuration information of the target CORESET;

repeated configuration information of the target CORESET;

configuration of a search space associated with the target CORESET;

the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) on the BWP where the target CORESET is located is configured in a transmission manner.

It should be noted that, the terminal device may acquire, based on the first configuration information, a transmission mode of the network side for the PDCCH in the target CORESET, and the terminal device may determine, according to the first configuration information, to detect the PDCCH by using a receiving mode corresponding to the transmission mode of the network side, so as to improve the detection performance of the PDCCH.

Alternatively, in some embodiments, S230 is detailed below by examples 1-4.

Example 1, the first configuration information is time domain resource configuration information of the target CORESET.

Wherein, the time domain resource configuration information indicates one or more groups of time domain resources used for transmitting PDCCH.

Specifically, in example 1, S230 may specifically be:

in the case that the time domain resource configuration information indicates a set of time domain resources for transmitting the PDCCH, the terminal device determines to detect the PDCCH in the target CORESET in the first mode, or the terminal device determines to detect the PDCCH in the target CORESET in the third mode;

In case that multiple sets of time domain resources for transmitting PDCCH are indicated in the time domain resource configuration information, the terminal device determines to detect PDCCH in the target CORESET in the second manner.

Alternatively, in example 1, in the case that multiple sets of time domain resources for transmitting PDCCH are indicated in the time domain resource configuration information, the terminal device uses the multiple TCI states to detect different PDCCHs carrying the same information in the target CORESET on the multiple sets of time domain resources for transmitting PDCCH, respectively.

Alternatively, in example 1, in the case that multiple sets of time domain resources for transmitting PDCCH are indicated in the time domain resource configuration information, different sets of time domain resources for transmitting PDCCH occupy different OFDM symbols in the same time slot, or different sets of time domain resources for transmitting PDCCH occupy adjacent downlink time slots.

Example 2, the first configuration information is repeated configuration information of the target CORESET.

And the repeated configuration information indicates whether the PDCCH is repeatedly transmitted or not.

Specifically, in example 2, S230 may specifically be:

if the repeated configuration information indicates that the PDCCH is not transmitted repeatedly, the terminal equipment determines to detect the PDCCH in the target CORESET in the first mode, or the terminal equipment determines to detect the PDCCH in the target CORESET in the third mode;

In the case that the PDCCH retransmission is instructed through the repetition configuration information, the terminal device determines to detect the PDCCH in the target CORESET in the second manner.

Optionally, in example 2, in the case that PDCCH retransmission is indicated by the repetition configuration information, the terminal device detects different PDCCHs carrying the same information in the target CORESET using the plurality of TCI states, respectively;

wherein, the different PDCCHs occupy different time domain resources, or the different PDCCHs occupy different frequency domain resources, or the different PDCCHs occupy different PDCCH candidates.

Optionally, in example 2, the repetition configuration information is further used to indicate a manner in which the PDCCH in the target CORESET is repeated. For example, it may be used to indicate whether the PDCCH repetition transmission adopts a time-division multiplexing (time-division multiplexing, TDM) manner or a Frequency-division multiplexing (Frequency-division multiplexing, FDM) manner.

Example 3, the first configuration information is a configuration of a search space associated with the target CORESET.

Wherein the configuration of the search space includes N TCI states, where n=0, or n=1, or n=2.

Specifically, in example 3, S230 may specifically include at least one of:

Under the condition that the TCI state is not indicated in the configuration of the search space associated with the target CORESET, the terminal equipment determines to detect the PDCCH in the target CORESET in the first mode, or the terminal equipment determines to detect the PDCCH in the target CORESET in the third mode;

in the case that a TCI state is indicated in the configuration of each search space associated with the target CORESET and the TCI states indicated in the configurations of different search spaces are not identical, the terminal device determines to detect the PDCCH in the target CORESET in the second manner;

in the case that a TCI state is indicated in the configuration of each search space associated with the target CORESET and the TCI states indicated in the configurations of different search spaces are the same, the terminal device determines to detect the PDCCH in the target CORESET in the third mode;

in the case that multiple TCI states are indicated in the configuration of the search space associated with the target CORESET, the terminal device determines to detect PDCCH in the target CORESET in the first manner.

Optionally, in example 3, in case that the TCI state is indicated in the configuration of the target CORESET-associated search space, the terminal device detects the PDCCH in the corresponding search space using the TCI state indicated in the configuration of the target CORESET-associated search space. For example, if TCI state 0 is indicated in the configuration of the first search space associated with the target CORESET and TCI state 1 is indicated in the configuration of the second search space, the terminal device detects the PDCCH in the first search space using TCI state 0 and detects the PDCCH in the second search space using TCI state 1.

Optionally, in example 3, in the case that one TCI state is indicated in the configuration of each search space associated with the target CORESET, and the TCI states indicated in the configurations of different search spaces are not identical, different PDCCHs carrying the same information are carried in the search spaces configured with different TCI states, respectively. At this time, the terminal device adopts the configured TCI states to detect different PDCCHs carrying the same information in the search space configured with the different TCI states.

Optionally, in example 3, the terminal device receives second configuration information sent by the network device, where the second configuration information is used to configure an index of the TCI state employed for the search space associated with the target CORESET.

Example 4, the first configuration information is a transmission mode configuration of a PDSCH on a BWP where the target CORESET is located.

The transmission mode is configured to instruct detection of the same PDSCH using multiple TCI states.

Specifically, in example 4, S230 may specifically be:

under the condition that the transmission mode configuration indicates that the same PDSCH is detected by adopting a plurality of TCI states, the terminal equipment determines to detect the PDCCH in the target CORESET by adopting the first mode;

And under the condition that the same PDSCH is not detected by the plurality of TCI states through the transmission mode configuration instruction, the terminal equipment determines to detect the PDCCH in the target CORESET through the second mode, or the terminal equipment determines to detect the PDCCH in the target CORESET through the third mode.

The TCI states of the PDSCH and the PDCCH are independently configured. The plurality of TCI states used for PDSCH detection and the plurality of TCI states used for PDCCH detection may be the same or different.

Alternatively, in example 4, in the case where the transmission scheme configuration indicates that the detection of the same PDSCH is performed using a plurality of TCI states, each demodulation reference signal (Demodulation Reference Signal, DMRS) port of the PDSCH is associated with the plurality of TCI states.

Alternatively, in some embodiments, the terminal device may perform PDCCH detection in the target CORESET based on the determined detection mode.

Optionally, in the case that the terminal device determines to detect the PDCCH in the target CORESET in the second manner, the terminal device performs detection of control information in the PDCCH after combining the PDCCH signals respectively received in the multiple TCI states.

The channel transmission scheme of the present application is described in detail below by way of example 1 to example 4.

In embodiment 1, the network device indicates the first configuration information and a plurality of TCI states corresponding to the target CORESET. The first configuration information is time domain resource configuration information of a target CORESET.

For example, the network device may configure time domain resource configuration information of the target CORESET through RRC signaling and indicate the plurality of TCI states through MAC layer signaling.

Typically, the plurality of TCI states is 2 TCI states.

In embodiment 1, the terminal device determines, according to the first configuration information, a detection manner adopted by the PDCCH in the target CORESET configured with a plurality of TCI states.

Wherein, the detection mode is one of the following three modes:

a third way is to detect each PDCCH in the target CORESET using only one TCI state of the plurality of TCI states.

Specifically, in the first manner, for each PDCCH in the target CORESET, the terminal device uses the multiple TCI states to detect. For example, the terminal device obtains multiple groups of channel large-scale parameters from the multiple TCI states respectively; obtaining a filter for channel estimation according to the large-scale parameters, so as to perform channel estimation based on PDCCH DMRS and obtain a channel of the PDCCH; and detecting the PDCCH based on the obtained PDCCH channel. For another example, the terminal device obtains a plurality of reception beams from the plurality of TCI states, respectively; receiving PDCCH based on the received beams, respectively; and detecting the PDCCH based on the PDCCH obtained by different receiving beams.

Specifically, in the third mode, the terminal device detects each PDCCH in the target CORESET using only one TCI state of the plurality of TCI states. In other words, other TCI states of the plurality of TCI states are not used for PDCCH detection. For example, the one TCI state may be a first TCI state of the plurality of TCI states, or a second TCI state of the plurality of TCI states, or a TCI state of the plurality of TCI states having a lowest TCI state ID, and so on. In one embodiment, the network device configures the target CORESET with two TCI states, but the terminal device only adopts the first one of the TCI states, the second TCI state not being used for PDCCH detection.

Optionally, in an implementation manner of embodiment 1, the terminal device may determine, according to the first configuration information, a detection manner adopted by the PDCCH in the target CORESET from a first manner and a second manner, where the first configuration information indicates a first configuration, and where the first configuration information indicates a second configuration; or, the terminal device may determine, according to the first configuration information, a detection mode adopted by the PDCCH in the target CORESET from a first mode and a third mode, where the first configuration information indicates a third configuration, and where the first configuration information indicates a fourth configuration, the first mode is adopted; or, the terminal device may determine, according to the first configuration information, a detection mode adopted by the PDCCH in the target CORESET from a second mode and a third mode, where the first configuration information indicates a fifth configuration, the second mode is adopted, and where the first configuration information indicates a sixth configuration, the third mode is adopted.

Optionally, in an implementation manner of embodiment 1, when a set of time domain resources for transmitting PDCCH is indicated in the time domain resource configuration information of the target CORESET, the terminal device determines to detect PDCCH in the target CORESET in the first manner, as shown in a in fig. 6, where each set of time domain resources includes two OFDM symbols; when the set of time domain resources used for transmitting the PDCCH is indicated in the time domain resource configuration information of the target CORESET, the terminal device determines to detect the PDCCH in the CORESET in the second manner, as shown by B in fig. 6, and each set of time domain resources includes two OFDM symbols.

Optionally, in another implementation manner of embodiment 1, when a set of time domain resources for transmitting PDCCH is indicated in the time domain resource configuration information of the target CORESET, the terminal device determines to detect PDCCH in the target CORESET in the third mode, as shown in C in fig. 6, where each set of time domain resources includes two OFDM symbols; when the set of time domain resources for transmitting PDCCH is indicated in the time domain resource configuration information of the target CORESET, the terminal device determines to detect PDCCH in the target CORESET in the second manner, as shown in B in fig. 6, and each set of time domain resources includes two OFDM symbols.

Specifically, in embodiment 1, when the time domain resource configuration information of the target CORESET indicates multiple sets of time domain resources for transmitting the PDCCH, the terminal device uses the multiple TCI states to detect different PDCCHs carrying the same information in the multiple sets of time domain resources for transmitting the PDCCH, respectively. Wherein different sets of time domain resources for transmitting PDCCH occupy different OFDM symbols in the same time slot or occupy adjacent downlink time slots, e.g. occupy the same OFDM symbols in adjacent downlink time slots. For example, the network device configures two sets of time domain resources for transmitting the PDCCH, the terminal device detects a first PDCCH using a first TCI state in the first set of time domain resources, and detects a second PDCCH using a second TCI state in the second set of time domain resources, where the first PDCCH and the second PDCCH carry the same control information. Specifically, as shown in B in fig. 6, each set of time domain resources contains two OFDM symbols in different slots.

Optionally, in embodiment 1, the terminal device performs PDCCH detection in the target CORESET in a deterministic manner.

Specifically, when the terminal device determines to detect the PDCCH in the target CORESET in the first manner, the detection method is as described in the first manner.

Specifically, when the terminal device determines that the PDCCH in the target CORESET is detected in the second mode, the terminal device combines the PDCCH signals respectively received in the multiple TCI states, and then detects control information in the PDCCH, where the detection method is as described in the second mode.

Specifically, when the terminal device determines to detect the PDCCH in the target CORESET in the third mode, the detection method is as described in the third mode. At this time, the terminal device detects each PDCCH in the target CORESET using only one TCI state-derived large scale parameter or receive beam.

In embodiment 1, the time domain resource configuration information of the target CORESET is reused to indicate the transmission mode of the PDCCH, and no additional signaling overhead is needed, so that the terminal can detect in a corresponding mode, and error detection of the PDCCH is avoided.

In embodiment 2, the network device indicates the first configuration information and a plurality of TCI states corresponding to the target CORESET. Wherein the first configuration information is repeated configuration information of the target CORESET.

Specifically, the network device may include the repeated configuration information of the target CORESET in the configuration information of the target CORESET. For example, the repetition configuration information may be used to indicate whether the PDCCH in the target CORESET is repeated.

In embodiment 2, the terminal device determines, according to the first configuration information, a detection manner adopted by the PDCCH in the target CORESET configured with a plurality of TCI states.

The description of the detection mode may refer to the related description in embodiment 1, and will not be repeated here.

Alternatively, in one implementation manner of embodiment 2, when no PDCCH retransmission is indicated in the repetition configuration information of the target CORESET, the terminal device determines to detect the PDCCH in the target CORESET in the first manner, as shown in a in fig. 7; when the repeat configuration information of the target CORESET indicates that the PDCCH is repeatedly transmitted, the terminal device determines to detect the PDCCH in the target CORESET in the second manner, as shown in B in fig. 7.

Optionally, in one implementation manner of embodiment 2, when no PDCCH retransmission is indicated in the repetition configuration information of the target CORESET, the terminal device determines to detect the PDCCH in the target CORESET in the third manner, as shown in C in fig. 7; when the repeat configuration information of the target CORESET indicates that the PDCCH is repeatedly transmitted, the terminal device determines to detect the PDCCH in the target CORESET in the second manner, as shown in B in fig. 7.

Specifically, in embodiment 2, when the repetition configuration information of the target CORESET indicates that PDCCH repetition is performed, the terminal device uses the multiple TCI states to detect different PDCCHs carrying the same information in the target CORESET, where the different PDCCHs occupy different time domain resources or frequency domain resources or PDCCH candidates (candidates). For example, the terminal device detects a first PDCCH using a first TCI state, detects a second PDCCH using a second TCI state, where the first PDCCH and the second PDCCH carry the same control information and occupy different OFDM symbols, as shown in B in fig. 7.

Optionally, in embodiment 2, the repetition configuration information of the target CORESET is further used to indicate a manner in which the PDCCH in the target CORESET is repeatedly transmitted. For example, the repetition configuration information of the target CORESET may include two bits of information, where one bit indicates that PDCCH repetition is not performed, one bit indicates that PDCCH repetition is performed using different time domain resources, one bit indicates that PDCCH repetition is performed using different frequency domain resources, and another bit is reserved.

Optionally, in embodiment 2, the terminal device performs PDCCH detection in the target CORESET in a deterministic manner.

The specific detection method is described in embodiment 1, and will not be described herein.

In embodiment 2, the repeated configuration information of the target CORESET is reused to indicate the transmission mode of the PDCCH, and no additional signaling overhead is needed, so that the terminal can detect in a corresponding mode, and error detection of the PDCCH is avoided.

Embodiment 3, the network device indicates the first configuration information and a plurality of TCI states corresponding to the target CORESET. Wherein the first configuration information is a configuration of a search space associated with the target CORESET.

In one embodiment, the network device may include, in the configuration information of the search space associated with the target CORESET, indication information of a TCI state index for indicating an index of a TCI state used for the PDCCH in the search space among the plurality of TCI states. Different search spaces associated with the target CORESET can be configured with the same TCI state index, and also can be configured with different TCI state indexes; the same number of TCI state indexes may be configured, or a different number of TCI state indexes may be configured. For example, the number may be 0, 1 or 2.

In embodiment 3, the terminal device determines, according to the first configuration information, a detection manner adopted by the PDCCH in the target CORESET configured with a plurality of TCI states.

Alternatively, in one implementation of embodiment 3, the terminal device may determine the detection manner adopted by the PDCCH in the target CORESET configured with multiple TCI states by using a combination of:

in the first mode, when no TCI state is indicated in the configuration of the search space associated with the target CORESET, the terminal device determines to detect the PDCCH in the target CORESET in the first mode.

In the second mode, when no TCI state is indicated in the configuration of the search space associated with the target CORESET, the terminal device determines to detect the PDCCH in the target CORESET in the third mode.

And in a third mode, when 1 TCI state is indicated in the configuration of each search space associated with the target CORESET and the TCI states indicated in the configurations of different search spaces are not completely the same, the terminal equipment determines to detect the PDCCH in the target CORESET in a second mode. For example, one TCI state is indicated in both the first search space and the second search space associated with the target CORESET, where TCI state 0 is indicated in the first search space configuration and TCI state 1 is indicated in the second search space configuration.

In a fourth mode, when 1 TCI state is indicated in the configuration of each search space associated with the target CORESET and the TCI states indicated in the configurations of different search spaces are the same, the terminal device determines to detect the PDCCH in the target CORESET in the third mode. For example, TCI state 0 is indicated in the configuration of all search spaces associated with the target CORESET.

In a fifth mode, when 2 TCI states are indicated in the configuration of the search space associated with the target CORESET, the terminal device determines to detect the PDCCH in the target CORESET in the first mode. For example, TCI state 0 and TCI state 1 are indicated in the configuration of all search spaces associated with the target CORESET.

Optionally, in one implementation of embodiment 3, the terminal device detects the PDCCH in the corresponding search space using the TCI state indicated in the configuration of the search space associated with the target CORESET. For example, if TCI state 0 is indicated in the configuration of the first search space associated with the target CORESET and TCI state 1 is indicated in the configuration of the second search space, the terminal device detects the PDCCH in the first search space using TCI state 0 and detects the PDCCH in the second search space using TCI state 1.

Optionally, in one implementation manner of embodiment 3, when 1 TCI state is indicated in the configuration of each search space associated with the target CORESET, and the TCI states indicated in the configurations of different search spaces are not completely the same, different PDCCHs carrying the same information are respectively carried in the search spaces configured with different TCI states. At this time, the terminal device adopts the configured TCI states to detect different PDCCHs carrying the same information in the search space configured with the different TCI states.

Optionally, in embodiment 3, the terminal device performs PDCCH detection in the target CORESET in a deterministic manner.

In embodiment 3, the configuration of each search space associated with the target CORESET is reused to indicate the transmission mode of the PDCCH, and no additional signaling overhead is needed, so that the terminal can detect in a corresponding mode, and error detection of the PDCCH is avoided.

In embodiment 4, the network device indicates the first configuration information and a plurality of TCI states corresponding to the target CORESET. The first configuration information is a transmission mode configuration of a PDSCH on a BWP where the target CORESET is located.

Specifically, the network device may configure a corresponding transmission manner for the PDSCH on one BWP through physical layer signaling or higher layer signaling. For example, the transmission scheme is to detect the same PDSCH using a plurality of TCI states. At this time, the terminal device may consider that the PDCCH on the same BWP also uses a similar transmission scheme, so as to perform detection in the first scheme.

In embodiment 4, the terminal device determines, according to the first configuration information, a detection manner adopted by the PDCCH in the target CORESET configured with a plurality of TCI states.

Optionally, in an implementation manner of embodiment 4, when the transmission mode configuration of the PDSCH on the BWP where the target CORESET is located indicates that the detection of the same PDSCH is performed using multiple TCI states, the terminal device determines to detect the PDCCH in the target CORESET in the first manner; otherwise, the terminal equipment determines to detect the PDCCH in the target CORESET in the second mode.

Optionally, in another implementation manner of embodiment 4, when the transmission mode configuration of the PDSCH on the BWP where the target CORESET is located indicates that the detection of the same PDSCH is performed using multiple TCI states, the terminal device determines to detect the PDCCH in the target CORESET in the first manner; otherwise, the terminal equipment determines to detect the PDCCH in the target CORESET in the third mode.

Specifically, in embodiment 4, the network device may associate multiple TCI states for each DMRS port of the PDSCH to indicate that the terminal device needs to use the multiple TCI states to detect the same PDSCH at this time. Accordingly, in the above-described determination condition, "detection of the same PDSCH using a plurality of TCI states" may be replaced by "association of a plurality of TCI states for each DMRS port of the PDSCH".

Optionally, in embodiment 4, the terminal device performs PDCCH detection in the target CORESET in a deterministic manner.

In embodiment 4, the transmission mode configuration of the PDSCH is reused to indicate the transmission mode of the PDCCH by utilizing the consistency of the transmission scheme and the application scene of the PDSCH and the PDCCH, and no extra signaling overhead is needed, so that the terminal can detect in a corresponding mode, and error detection of the PDCCH is avoided.

Therefore, in the embodiment of the present application, the terminal device may determine, according to the first configuration information, a detection manner adopted by the PDCCH in the target CORESET configured with the multiple TCI states. That is, the terminal device may detect the PDCCH according to other configurations by adopting a receiving mode corresponding to the network side transmission mode without knowing the purpose and application scenario of the multiple TCI states configured at present, thereby improving the detection performance of the PDCCH. The problem that the PDCCH cannot be correctly demodulated due to the fact that the PDCCH is detected in an error mode can be effectively avoided.

The method embodiments of the present application are described in detail above with reference to fig. 5 to 7, and the apparatus embodiments of the present application are described in detail below with reference to fig. 8 to 12, it being understood that the apparatus embodiments and the method embodiments correspond to each other, and similar descriptions may refer to the method embodiments.

Fig. 8 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As shown in fig. 8, the terminal device 300 includes:

a processing unit 310, configured to determine, according to the first configuration information, a detection manner adopted by a PDCCH in a target control resource set CORESET, where the target CORESET is configured with a plurality of transmission configuration indicators TCI states;

wherein, the detection mode is one of the following three modes:

Optionally, the first configuration information includes at least one of:

time domain resource configuration information of the target CORESET;

repeated configuration information of the target CORESET;

configuration of a search space associated with the target CORESET;

the transmission mode configuration of the physical downlink shared channel PDSCH on the bandwidth part BWP where the target CORESET is located.

Optionally, the first configuration information is time domain resource configuration information of the target CORESET;

The processing unit 310 specifically is configured to:

determining to detect the PDCCH in the target CORESET in the first mode or determining to detect the PDCCH in the target CORESET in the third mode under the condition that a set of time domain resources for transmitting the PDCCH is indicated in the time domain resource configuration information;

in the case where multiple sets of time domain resources for transmitting PDCCH are indicated in the time domain resource configuration information, it is determined to detect PDCCH in the target CORESET in the second manner.

Optionally, the terminal device 300 further includes: a communication unit 320, wherein,

in the case that multiple sets of time domain resources for transmitting PDCCH are indicated in the time domain resource configuration information, the communication unit 320 is configured to detect different PDCCHs carrying the same information in the target CORESET on the multiple sets of time domain resources for transmitting PDCCH, respectively, using the multiple TCI states.

Optionally, in the case that the time domain resource configuration information indicates multiple groups of time domain resources for transmitting the PDCCH, different groups of time domain resources for transmitting the PDCCH occupy different orthogonal frequency division multiplexing OFDM symbols in the same time slot, or different groups of time domain resources for transmitting the PDCCH occupy adjacent downlink time slots.

Optionally, the first configuration information is repeated configuration information of the target CORESET;

the processing unit 310 specifically is configured to:

if the repeated configuration information indicates that the PDCCH is not transmitted repeatedly, determining to detect the PDCCH in the target CORESET in the first mode, or determining to detect the PDCCH in the target CORESET in the third mode;

and determining to detect the PDCCH in the target CORESET in the second mode when the repeated transmission of the PDCCH is indicated by the repeated configuration information.

under the condition that the repeated configuration information indicates to carry out PDCCH repeated transmission, the communication unit is used for respectively detecting different PDCCHs carrying the same information in the target CORESET by adopting the plurality of TCI states;

Optionally, the repetition configuration information is further used to indicate a manner of performing repeated transmission on the PDCCH in the target CORESET.

Optionally, the first configuration information is a configuration of a search space associated with the target CORESET;

The processing unit 310 determines, according to the first configuration information, a detection mode adopted by the PDCCH in the target CORESET, including at least one of the following:

in the case that no TCI state is indicated in the configuration of the search space associated with the target CORESET, the processing unit 310 determines to detect the PDCCH in the target CORESET in the first manner, or the processing unit 310 determines to detect the PDCCH in the target CORESET in the third manner;

in the case that one TCI state is indicated in the configuration of each search space associated with the target CORESET and the TCI states indicated in the configurations of different search spaces are not exactly the same, the processing unit 310 determines to detect the PDCCH in the target CORESET in the second manner;

in the case that one TCI state is indicated in the configuration of each search space associated with the target CORESET and the TCI states indicated in the configuration of different search spaces are the same, the processing unit 310 determines to detect the PDCCH in the target CORESET in the third mode;

in the event that multiple TCI states are indicated in the configuration of the search space associated with the target CORESET, the processing element 310 determines to detect PDCCH in the target CORESET in the first manner.

in case the TCI state is indicated in the configuration of the target CORESET-associated search space, the communication unit 320 is configured to detect the PDCCH in the corresponding search space with the TCI state indicated in the configuration of the target CORESET-associated search space.

Optionally, in the case that a TCI state is indicated in the configuration of each search space associated with the target CORESET, and the TCI states indicated in the configurations of different search spaces are not identical, different PDCCHs carrying the same information are respectively carried in the search spaces configured with different TCI states.

Optionally, the terminal device 300 further includes:

a communication unit 320, configured to receive second configuration information, where the second configuration information is used to configure an index of the TCI state used for the search space associated with the target CORESET.

Optionally, the first configuration information is a transmission mode configuration of a PDSCH on a BWP where the target CORESET is located;

the processing unit 310 specifically is configured to:

determining to detect the PDCCH in the target CORESET in the first mode under the condition that the transmission mode configuration indicates that the same PDSCH is detected by adopting a plurality of TCI states;

And if the transmission mode configuration indicates that the detection of the same PDSCH is performed by adopting a plurality of TCI states, determining to detect the PDCCH in the target CORESET by adopting the second mode, or determining to detect the PDCCH in the target CORESET by adopting the third mode.

Optionally, in the case that the transmission mode configuration indicates that the detection of the same PDSCH is performed using multiple TCI states, each demodulation reference signal DMRS port of the PDSCH is associated with the multiple TCI states.

Optionally, the terminal device 300 further includes:

and a communication unit 320, configured to, when the terminal device determines to detect the PDCCH in the target CORESET in the second manner, combine the PDCCH signals respectively received in the multiple TCI states, and then detect control information in the PDCCH.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 300 are respectively for implementing the corresponding flow of the terminal device in the method 200 shown in fig. 5, which is not described herein for brevity.

Fig. 9 shows a schematic block diagram of a network device 400 according to an embodiment of the present application. As shown in fig. 9, the network device 400 includes:

a communication unit 410, configured to send first configuration information and a plurality of transmission configuration indicators TCI status of a target control resource set CORESET to a terminal device, where the first configuration information is used for the terminal device to determine a detection mode adopted by a physical downlink control channel PDCCH in the target CORESET;

wherein, the detection mode is one of the following three modes:

Optionally, the first configuration information includes at least one of:

time domain resource configuration information of the target CORESET;

repeated configuration information of the target CORESET;

configuration of a search space associated with the target CORESET;

Optionally, the first configuration information is time domain resource configuration information of the target CORESET, and one or more groups of time domain resources for transmitting PDCCH are indicated in the time domain resource configuration information.

Optionally, the first configuration information is repeated configuration information of the target CORESET, and the repeated configuration information indicates whether PDCCH retransmission is performed.

Optionally, the first configuration information is a configuration of a search space associated with the target CORESET, and the configuration of the search space includes N TCI states, where n=0, n=1, or n=2.

Optionally, the first configuration information is configured for a transmission mode of a PDSCH on a BWP where the target CORESET is located, and the transmission mode is configured to indicate that multiple TCI states are used for detecting the same PDSCH.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip.

It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the network device 400 are respectively for implementing the corresponding flow of the network device in the method 200 shown in fig. 5, and are not further described herein for brevity.

Fig. 10 is a schematic structural diagram of a communication device 500 provided in an embodiment of the present application. The communication device 500 shown in fig. 10 comprises a processor 510, from which the processor 510 may call and run a computer program to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 10, the communication device 500 may further comprise a memory 520. Wherein the processor 510 may call and run a computer program from the memory 520 to implement the methods in embodiments of the present application.

Wherein the memory 520 may be a separate device from the processor 510 or may be integrated into the processor 510.

Optionally, as shown in fig. 10, the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

Wherein the transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include antennas, the number of which may be one or more.

Optionally, the communication device 500 may be specifically a network device in the embodiment of the present application, and the communication device 500 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 500 may be specifically a mobile terminal/terminal device in the embodiment of the present application, and the communication device 500 may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Fig. 11 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 600 shown in fig. 11 includes a processor 610, and the processor 610 may call and run a computer program from a memory to implement the methods in the embodiments of the present application.

Optionally, as shown in fig. 11, the apparatus 600 may further comprise a memory 620. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the methods in embodiments of the present application.

The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

Optionally, the apparatus 600 may further comprise an input interface 630. The processor 610 may control the input interface 630 to communicate with other devices or chips, and in particular, may acquire information or data sent by the other devices or chips.

Optionally, the apparatus 600 may further comprise an output interface 640. Wherein the processor 610 may control the output interface 640 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the apparatus may be applied to a network device in the embodiments of the present application, and the apparatus may implement a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the apparatus may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Alternatively, the device mentioned in the embodiments of the present application may also be a chip. For example, a system-on-chip or a system-on-chip, etc.

Fig. 12 is a schematic block diagram of a communication system 700 provided in an embodiment of the present application. As shown in fig. 12, the communication system 700 includes a terminal device 710 and a network device 720.

The terminal device 710 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 may be configured to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, which is not described herein for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device in the embodiments of the present application, and the computer program instructions cause the computer to execute corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the present application, where the computer program when run on a computer causes the computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, and for brevity, will not be described herein.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. For such understanding, the technical solutions of the present application may be embodied in essence or in a part contributing to the prior art or in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of channel transmission, comprising:

the method comprises the steps that a terminal device determines a detection mode adopted by a physical downlink control channel PDCCH in a target control resource set CORESET according to first configuration information, wherein the target CORESET is configured with a plurality of transmission configuration indication TCI states;

wherein, the detection mode is one of the following three modes:

the first way is to detect each PDCCH in the target CORESET using the multiple TCI states;

the second mode is to respectively detect different PDCCHs carrying the same information in the target CORESET by adopting the plurality of TCI states;

a third way is to detect each PDCCH in the target CORESET with one of the plurality of TCI states.
The method of claim 1, wherein the first configuration information comprises at least one of:

Time domain resource configuration information of the target CORESET;

repeated configuration information of the target CORESET;

configuration of a search space associated with the target CORESET;

and configuring the transmission mode of the physical downlink shared channel PDSCH on the BWP of the bandwidth part where the target CORESET is located.
The method according to claim 1 or 2, wherein the first configuration information is time domain resource configuration information of the target CORESET;

the terminal equipment determines a detection mode adopted by the PDCCH in the target CORESET according to the first configuration information, and comprises the following steps:

under the condition that a group of time domain resources for transmitting PDCCH is indicated in the time domain resource configuration information, the terminal equipment determines to detect the PDCCH in the target CORESET in the first mode, or the terminal equipment determines to detect the PDCCH in the target CORESET in the third mode;

and under the condition that a plurality of groups of time domain resources for transmitting PDCCH are indicated in the time domain resource configuration information, the terminal equipment determines to detect the PDCCH in the target CORESET in the second mode.
A method as claimed in claim 3, wherein the method further comprises:

And under the condition that a plurality of groups of time domain resources for transmitting PDCCH are indicated in the time domain resource configuration information, the terminal equipment adopts the plurality of TCI states to detect different PDCCHs carrying the same information in the target CORESET on the plurality of groups of time domain resources for transmitting PDCCH.
The method of claim 3 or 4, wherein in case that the time domain resource configuration information indicates multiple sets of time domain resources for transmitting PDCCH, different sets of time domain resources for transmitting PDCCH occupy different orthogonal frequency division multiplexing OFDM symbols in the same time slot, or different sets of time domain resources for transmitting PDCCH occupy adjacent downlink time slots.
The method of claim 1 or 2, wherein the first configuration information is repeated configuration information of the target CORESET;

the terminal equipment determines a detection mode adopted by the PDCCH in the target CORESET according to the first configuration information, and comprises the following steps:

under the condition that the repeated transmission of the PDCCH is not indicated by the repeated configuration information, the terminal equipment determines to detect the PDCCH in the target CORESET in the first mode, or the terminal equipment determines to detect the PDCCH in the target CORESET in the third mode;

And under the condition that the repeated configuration information indicates the PDCCH to be repeatedly transmitted, the terminal equipment determines to detect the PDCCH in the target CORESET in the second mode.
The method of claim 6, wherein the method further comprises:

under the condition that the repeated configuration information indicates that the PDCCH is repeatedly transmitted, the terminal equipment respectively detects different PDCCHs carrying the same information in the target CORESET by adopting the plurality of TCI states;

wherein, the different PDCCHs occupy different time domain resources, or the different PDCCHs occupy different frequency domain resources, or the different PDCCHs occupy different PDCCH candidates.
The method of claim 6 or 7, wherein the repetition configuration information is further used to indicate a manner in which PDCCH in the target CORESET is repeated.
The method of claim 1 or 2, wherein the first configuration information is a configuration of a search space associated with the target CORESET;

the terminal equipment determines a detection mode adopted by the PDCCH in the target CORESET according to the first configuration information, and the detection mode comprises at least one of the following steps:

Under the condition that the TCI state is not indicated in the configuration of the search space associated with the target CORESET, the terminal equipment determines to detect the PDCCH in the target CORESET in the first mode, or the terminal equipment determines to detect the PDCCH in the target CORESET in the third mode;

in the case that a TCI state is indicated in the configuration of each search space associated with the target CORESET and the TCI states indicated in the configurations of different search spaces are not identical, the terminal device determines to detect the PDCCH in the target CORESET in the second manner;

in the case that a TCI state is indicated in the configuration of each search space associated with the target CORESET and the TCI states indicated in the configurations of different search spaces are the same, the terminal device determines to detect the PDCCH in the target CORESET in the third mode;

in case a plurality of TCI states are indicated in the configuration of the search space associated with the target CORESET, the terminal device determines to detect the PDCCH in the target CORESET in the first manner.
The method of claim 9, wherein the method further comprises:

And under the condition that the TCI state is indicated in the configuration of the search space related to the target CORESET, the terminal equipment detects the PDCCH in the corresponding search space by adopting the TCI state indicated in the configuration of the search space related to the target CORESET.
The method according to claim 9 or 10, characterized in that in case that one TCI state is indicated in the configuration of each search space associated with the target CORESET and the TCI states indicated in the configuration of different search spaces are not identical, different PDCCHs carrying the same information are carried in the search spaces configured with different TCI states, respectively.
The method of any one of claims 9 to 11, wherein the method further comprises:

the terminal equipment receives second configuration information, wherein the second configuration information is used for configuring an index of a TCI state adopted for a search space associated with the target CORESET.
The method according to claim 1 or 2, wherein the first configuration information is a transmission mode configuration of a PDSCH on a BWP where the target CORESET is located;

the terminal equipment determines a detection mode adopted by the PDCCH in the target CORESET according to the first configuration information, and comprises the following steps:

Under the condition that the transmission mode configuration indicates that the same PDSCH is detected by adopting a plurality of TCI states, the terminal equipment determines to detect the PDCCH in the target CORESET by adopting the first mode;

and under the condition that the transmission mode configuration indicates that the detection of the same PDSCH is performed by adopting a plurality of TCI states, the terminal equipment determines to detect the PDCCH in the target CORESET by adopting the second mode, or the terminal equipment determines to detect the PDCCH in the target CORESET by adopting the third mode.
The method of claim 13, wherein each demodulation reference signal, DMRS, port of the PDSCH is associated with multiple TCI states if the transmission mode configuration indicates detection of the same PDSCH with the multiple TCI states.
The method according to any one of claim 1 to 14, wherein,

in the third aspect, one TCI state of the plurality of TCI states is a first TCI state of the plurality of TCI states, or one TCI state of the plurality of TCI states is a TCI state with a lowest TCI state index of the plurality of TCI states.
The method of any one of claims 1 to 15, wherein the method further comprises:

And under the condition that the terminal equipment determines to detect the PDCCH in the target CORESET in the second mode, the terminal equipment combines the PDCCH signals respectively received in the plurality of TCI states and then detects the control information in the PDCCH.
A method of channel transmission, comprising:

the network equipment sends first configuration information and a plurality of transmission configuration indicators TCI states of a target control resource set CORESET to the terminal equipment, wherein the first configuration information is used for the terminal equipment to determine a detection mode adopted by a physical downlink control channel PDCCH in the target CORESET;

wherein, the detection mode is one of the following three modes:

the first way is to detect each PDCCH in the target CORESET using the multiple TCI states;

the second mode is to respectively detect different PDCCHs carrying the same information in the target CORESET by adopting the plurality of TCI states;

a third way is to detect each PDCCH in the target CORESET with one of the plurality of TCI states.
The method of claim 17, wherein the first configuration information comprises at least one of:

Time domain resource configuration information of the target CORESET;

repeated configuration information of the target CORESET;

configuration of a search space associated with the target CORESET;

and configuring the transmission mode of the physical downlink shared channel PDSCH on the BWP of the bandwidth part where the target CORESET is located.
The method of claim 17 or 18, wherein the first configuration information is time domain resource configuration information of the target CORESET, and one or more sets of time domain resources for transmitting PDCCH are indicated in the time domain resource configuration information.
The method of claim 17 or 18, wherein the first configuration information is repetition configuration information of the target CORESET, and wherein the repetition configuration information indicates whether PDCCH repetition transmission is performed.
The method of claim 20 wherein the duplicate configuration information is further used to indicate a manner in which PDCCH in the target CORESET is to be retransmitted.
The method of claim 17 or 18, wherein the first configuration information is a configuration of a search space associated with the target CORESET, and the configuration of the search space includes N TCI states, where n=0, or n=1, or n=2.
The method of claim 17 or 18, wherein the first configuration information is a transmission scheme configuration of a PDSCH on a BWP where the target CORESET is located, and the transmission scheme configuration is used to indicate that detection of the same PDSCH is performed using multiple TCI states.
The method according to any one of claim 17 to 23,

in the third aspect, one TCI state of the plurality of TCI states is a first TCI state of the plurality of TCI states, or one TCI state of the plurality of TCI states is a TCI state with a lowest TCI state index of the plurality of TCI states.
A terminal device, comprising:

the processing unit is used for determining a detection mode adopted by a physical downlink control channel PDCCH in a target control resource set CORESET according to the first configuration information, wherein the target CORESET is configured with a plurality of transmission configuration indication TCI states;

wherein, the detection mode is one of the following three modes:

the first way is to detect each PDCCH in the target CORESET using the multiple TCI states;

the second mode is to respectively detect different PDCCHs carrying the same information in the target CORESET by adopting the plurality of TCI states;

A third way is to detect each PDCCH in the target CORESET with one of the plurality of TCI states.
The terminal device of claim 25, wherein the first configuration information includes at least one of:

time domain resource configuration information of the target CORESET;

repeated configuration information of the target CORESET;

configuration of a search space associated with the target CORESET;

and configuring the transmission mode of the physical downlink shared channel PDSCH on the BWP of the bandwidth part where the target CORESET is located.
The terminal device according to claim 25 or 26, wherein the first configuration information is time domain resource configuration information of the target CORESET;

the processing unit is specifically configured to:

determining to detect the PDCCH in the target CORESET in the first mode or determining to detect the PDCCH in the target CORESET in the third mode under the condition that a group of time domain resources for transmitting the PDCCH is indicated in the time domain resource configuration information;

and determining to detect the PDCCH in the target CORESET in the second mode under the condition that a plurality of groups of time domain resources for transmitting the PDCCH are indicated in the time domain resource configuration information.
The terminal device of claim 27, wherein the terminal device further comprises: a communication unit, wherein,

and under the condition that a plurality of groups of time domain resources for transmitting PDCCH are indicated in the time domain resource configuration information, the communication unit is used for adopting the plurality of TCI states to detect different PDCCHs carrying the same information in the target CORESET on the plurality of groups of time domain resources for transmitting PDCCH.
The terminal device of claim 27 or 28, wherein, in the case where multiple sets of time domain resources for transmitting PDCCH are indicated in the time domain resource configuration information, different sets of time domain resources for transmitting PDCCH occupy different orthogonal frequency division multiplexing, OFDM, symbols in the same time slot, or different sets of time domain resources for transmitting PDCCH occupy adjacent downlink time slots.
The terminal device according to claim 25 or 26, wherein the first configuration information is repeated configuration information of the target CORESET;

the processing unit is specifically configured to:

determining to detect the PDCCH in the target CORESET in the first mode or determining to detect the PDCCH in the target CORESET in the third mode under the condition that the repeated transmission of the PDCCH is not indicated by the repeated configuration information;

And determining to detect the PDCCH in the target CORESET in the second mode under the condition that the repeated transmission of the PDCCH is indicated by the repeated configuration information.
The terminal device of claim 30, wherein the terminal device further comprises: a communication unit, wherein,

the communication unit is used for respectively detecting different PDCCHs carrying the same information in the target CORESET by adopting the plurality of TCI states under the condition that the repeated configuration information indicates the PDCCH to be repeatedly transmitted;

wherein, the different PDCCHs occupy different time domain resources, or the different PDCCHs occupy different frequency domain resources, or the different PDCCHs occupy different PDCCH candidates.
The terminal device of claim 30 or 31, wherein the repetition configuration information is further used to indicate a manner in which PDCCH in the target CORESET is repeated.
A terminal device according to claim 25 or 26, wherein the first configuration information is a configuration of a search space associated with the target CORESET;

the processing unit determines a detection mode adopted by the PDCCH in the target CORESET according to the first configuration information, and the detection mode comprises at least one of the following steps:

In the case that no TCI state is indicated in the configuration of the search space associated with the target CORESET, the processing unit determines to detect the PDCCH in the target CORESET in the first mode, or the processing unit determines to detect the PDCCH in the target CORESET in the third mode;

in the case that one TCI state is indicated in the configuration of each search space associated with the target CORESET and the TCI states indicated in the configurations of different search spaces are not identical, the processing unit determines to detect the PDCCH in the target CORESET in the second manner;

in the case that one TCI state is indicated in the configuration of each search space associated with the target CORESET and the TCI states indicated in the configurations of different search spaces are the same, the processing unit determines to detect the PDCCH in the target CORESET in the third mode;

in the case that multiple TCI states are indicated in the configuration of the search space associated with the target CORESET, the processing unit determines to detect PDCCH in the target CORESET in the first manner.
The terminal device of claim 33, wherein the terminal device further comprises: a communication unit, wherein,

In case a TCI state is indicated in the configuration of the target CORESET-associated search space, the communication unit is configured to detect a PDCCH in the corresponding search space using the TCI state indicated in the configuration of the target CORESET-associated search space.
The terminal device according to claim 33 or 34, wherein in case that one TCI state is indicated in the configuration of each search space associated with the target CORESET and the TCI states indicated in the configuration of different search spaces are not identical, different PDCCHs carrying the same information are carried in the search spaces configured with different TCI states, respectively.
The terminal device according to any of the claims 33 to 35, wherein the terminal device further comprises:

and the communication unit is used for receiving second configuration information, wherein the second configuration information is used for configuring the index of the adopted TCI state for the search space associated with the target CORESET.
The terminal device according to claim 25 or 26, wherein the first configuration information is a transmission mode configuration of a PDSCH on a BWP where the target CORESET is located;

the processing unit is specifically configured to:

determining to detect the PDCCH in the target CORESET in the first mode under the condition that the transmission mode configuration indicates that the detection of the same PDSCH is performed by adopting a plurality of TCI states;

And under the condition that the same PDSCH is not detected by the plurality of TCI states through the transmission mode configuration instruction, determining to detect the PDCCH in the target CORESET through the second mode, or determining to detect the PDCCH in the target CORESET through the third mode.
The terminal device of claim 37, wherein each demodulation reference signal, DMRS, port of the PDSCH is associated with multiple TCI states if the transmission mode configuration indicates detection of the same PDSCH with the multiple TCI states.
The terminal device according to any of the claims 25 to 38, characterized in that,

in the third aspect, one TCI state of the plurality of TCI states is a first TCI state of the plurality of TCI states, or one TCI state of the plurality of TCI states is a TCI state with a lowest TCI state index of the plurality of TCI states.
The terminal device according to any of the claims 25 to 39, wherein the terminal device further comprises:

and the communication unit is used for combining the PDCCH signals respectively received by the plurality of TCI states and then detecting the control information in the PDCCH when the terminal equipment determines that the PDCCH in the target CORESET is detected by adopting the second mode.
A network device, comprising:

a communication unit, configured to send first configuration information and a plurality of transmission configuration indicators TCI of a target control resource set CORESET to a terminal device, where the first configuration information is used for the terminal device to determine a detection mode adopted by a physical downlink control channel PDCCH in the target CORESET;

wherein, the detection mode is one of the following three modes:

the first way is to detect each PDCCH in the target CORESET using the multiple TCI states;

the second mode is to respectively detect different PDCCHs carrying the same information in the target CORESET by adopting the plurality of TCI states;

a third way is to detect each PDCCH in the target CORESET with one of the plurality of TCI states.
The network device of claim 41, wherein the first configuration information comprises at least one of:

time domain resource configuration information of the target CORESET;

repeated configuration information of the target CORESET;

configuration of a search space associated with the target CORESET;

and configuring the transmission mode of the physical downlink shared channel PDSCH on the BWP of the bandwidth part where the target CORESET is located.
The network device of claim 41 or 42, wherein the first configuration information is time domain resource configuration information of the target CORESET, and one or more sets of time domain resources for transmitting PDCCH are indicated in the time domain resource configuration information.
The network device of claim 41 or 42, wherein the first configuration information is repetition configuration information of the target CORESET, and wherein the repetition configuration information indicates whether PDCCH repetition transmission is performed.
The network device of claim 44, wherein the duplicate configuration information is further for indicating a manner in which the PDCCH in the target CORESET is to be retransmitted.
The network device of claim 41 or 42, wherein the first configuration information is a configuration of a search space associated with the target CORESET, and the configuration of the search space includes N TCI states, where n=0, or n=1, or n=2.
The network device of claim 41 or 46, wherein the first configuration information is a transmission scheme configuration of a PDSCH on a BWP where the target CORESET is located, and the transmission scheme configuration is used to indicate that multiple TCI states are used for detection of a same PDSCH.
The network device of any one of claims 41 to 47,

in the third aspect, one TCI state of the plurality of TCI states is a first TCI state of the plurality of TCI states, or one TCI state of the plurality of TCI states is a TCI state with a lowest TCI state index of the plurality of TCI states.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory to perform the method of any of claims 1 to 16.
A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 17 to 24.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 16.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 17 to 24.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 16.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 17 to 24.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 16.
A computer program product comprising computer program instructions which cause a computer to perform the method of any of claims 17 to 24.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 16.
A computer program, characterized in that the computer program causes a computer to perform the method of any of claims 17 to 24.