WO2021159981A1 - Downlink control information transmission method, terminal device, and network device - Google Patents

Abstract

Disclosed are a downlink control information transmission method, a terminal device, and a network device. The downlink control information transmission method comprises: acquiring multiple activated transmission configuration indication (TCI) states corresponding to a control resource set (CORESET); and receiving, according to activated TCI states of respective time-frequency resources in the CORESET, downlink control information transmitted on a physical downlink control channel (PDCCH), wherein the activated TCI states of the respective time-frequency resources in the CORESET are determined from the multiple activated TCI states on the basis of a preset time-frequency resource granularity and according to a preset rule.

Description

Downlink control information transmission method, terminal equipment and network equipment

cross reference

The present invention claims the priority of a Chinese patent application filed with the Chinese Patent Office on February 13, 2020, the application number is 202010091456.9, and the invention title is "Downlink control information transmission method, terminal equipment and network equipment". The entire content of the application is approved The citation is incorporated in the present invention.

Technical field

The present invention relates to the field of communications, and in particular to a method for downlink control information, terminal equipment and network equipment.

Background technique

The Physical Downlink Control Channel (PDCCH) is mainly used to transmit network control information and indicate how to transmit downlink or uplink traffic channels. In the New Radio (NR) system, information such as the frequency domain position occupied by the PDCCH on the bandwidth and the number of OFDM symbols occupied in the time domain is encapsulated in the control resource set (CORESET), and the network is the terminal equipment (UE, User Equipment). ) Configure the CORESET resource, and configure the transmission configuration indication (TCI) state of the CORESET to indicate the information of the spatial reception beam corresponding to the CORESET resource.

When the network is configured with multiple Transmit-Receive Points (TRP), the UE may maintain communication links with multiple TRPs at the same time. In an actual scenario, as shown in Figure 1, a certain communication link may be suddenly blocked, resulting in a sudden drop in link performance. In order to improve the transmission performance of the Physical Downlink Control Channel (PDCCH), a reliable transmission scheme is to send the PDCCH on two TRPs at the same time to improve the transmission robustness.

In related technologies, although each CORESET can configure multiple activated TCI states through RRC, the network can only activate one TCI of CORESET through the Media Access Control (MAC) control element (CE). State, but when CORESET is jointly sent on multiple TRPs, the wireless channel characteristics and transmission beams of each TRP are different, corresponding to different TCI states. Therefore, it is necessary to activate multiple activated TCI states for CORESET. When there are multiple activated TCI states corresponding to CORESET, there is no effective solution for how to transmit downlink control information.

Summary of the invention

The purpose of the embodiments of the present invention is to provide a downlink control information transmission method, terminal equipment and network equipment to transmit downlink control information when there are multiple activated TCI states corresponding to CORESET.

In the first aspect, a method for transmitting downlink control information is provided, which is applied to a terminal device. The method includes: acquiring a plurality of activated transmission configuration indication (TCI) states corresponding to a control resource set (CORESET); The activated TCI state of each time-frequency resource receives downlink control information transmitted on the physical downlink control channel (PDCCH); wherein, the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity, And determined in the multiple activated TCI states according to a predetermined rule.

In a second aspect, a downlink control information transmission method is provided, which is applied to a network device. The method includes: sending instruction information to indicate a plurality of activated TCI states corresponding to CORESET; The activated TCI state is the downlink control information transmitted on the PDCCH; wherein, the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity, and is activated in the plurality of time-frequency resources according to a predetermined rule Determined in the TCI status.

In a third aspect, a method for receiving a physical downlink shared channel (PDSCH) is provided, which is applied to a terminal device. The method includes: at least one CORESET in the first CORESET corresponds to multiple activated TCI states, media access control When the layer MAC control unit CE configures multiple code points for the PDSCH, and each of the code points is mapped to a TCI state, if the received downlink control information (DCI) and the time offset between the PDSCH Less than the receiving processing capability threshold reported by the terminal equipment, the TCI state or QCL relationship of the received PDSCH is determined in a predetermined manner, wherein the PDSCH corresponds to the PDSCH, and the first CORESET is the distance from the DCI All CORESETs on the BWP of the carrier bandwidth part of the activated serving cell monitored in the most recent time slot.

In a fourth aspect, a terminal device is provided, including: an acquisition module, configured to acquire multiple activated transmission configuration indications (TCI status) corresponding to a control resource set (CORESET); and a receiving module, configured according to each of the CORESET The activated TCI state of the time-frequency resource receives downlink control information transmitted on the physical downlink control channel (PDCCH); wherein the activated TCI state of each time-frequency resource in the CORESET is based on the preset time-frequency resource granularity, and Determined in the plurality of activated TCI states according to predetermined rules.

In a fifth aspect, a network device is provided, including: a sending module for sending instruction information to indicate multiple activated TCI states corresponding to CORESET; The activated TCI state is the downlink control information transmitted on the PDCCH; wherein, the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity, and the activated TCI state is performed in the plurality of activated TCIs according to predetermined rules. Determined in the state.

In a sixth aspect, a terminal device is provided, including: a first CORESET corresponding to at least one CORESET corresponding to multiple activated TCI states, a media access control layer MAC control unit CE configuring multiple code points for PDSCH, and In the case where each code point is mapped to a TCI state, if the time offset between the received downlink control information DCI and PDSCH is less than the receiving processing capability threshold reported by the terminal device, the predetermined method is used , Determine the TCI state or QCL relationship of the received PDSCH, where the first CORESET is all CORESETs on the active carrier bandwidth part (BWP) of the serving cell monitored in the time slot closest to the DCI.

In a seventh aspect, a network device is provided, including: a memory, a processor, and a computer program stored in the memory and capable of being run on the processor. When the computer program is executed by the processor, the following The steps of the method described in the second aspect.

In an eighth aspect, a terminal device is provided, including: a memory, a processor, and a computer program stored in the memory and capable of being run on the processor. When the computer program is executed by the processor, the computer program is The steps of the method described in one aspect or the third aspect.

In a ninth aspect, a computer-readable storage medium is provided, and a computer program is stored on the computer-readable storage medium. Steps of the method.

In the embodiment of the present invention, when the CORESET is activated in multiple TCI states, the downlink control information transmitted on the PDCCH is received according to the activated TCI state of each time-frequency resource in the CORESET, where each time-frequency resource in the CORESET The activated TCI state of the resource is based on the preset time-frequency resource granularity and is determined in the multiple activated TCI states according to predetermined rules, so that the downlink control can be transmitted when there are multiple activated TCI states corresponding to CORESET Information, so that the UE can receive the network control information transmitted by each TRP on the CORESET resource, which improves the transmission robustness.

Description of the drawings

The drawings described here are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and the description thereof are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

FIG. 1 is a schematic diagram of a UE maintaining a communication link with multiple TRPs in the related art at the same time;

2 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a structure of a CORESET resource provided by an embodiment of the present invention;

Figure 4a is a schematic diagram of the TCI state configuration of a CORESET resource in an embodiment of the present invention;

Figure 4b is a schematic diagram of the TCI state configuration of another CORESET resource in an embodiment of the present invention;

FIG. 4c is a schematic diagram of another TCI state configuration diagram of a CORESET resource in an embodiment of the present invention;

FIG. 4d is a schematic diagram of another TCI state configuration of a CORESET resource in an embodiment of the present invention;

FIG. 5 is another schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention;

FIG. 6 is a schematic flowchart of a method for receiving PDSCH according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a network device provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of another terminal device according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a network device provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The technical solution of the present invention can be applied to various communication systems, such as: Global System of Mobile Communication (GSM), Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (GSM) system. WCDMA, Wideband Code Division Multiple Access, General Packet Radio Service (GPRS, General Packet Radio Service), Long Term Evolution (LTE, Long Term Evolution)/Enhanced Long Term Evolution (LTE-A, Long Term Evolution Advanced), NR (New Radio) )Wait.

User equipment (UE, User Equipment), also called terminal equipment, mobile terminal (Mobile Terminal), mobile user equipment, etc., can be connected to one or more cores via a radio access network (for example, RAN, Radio Access Network) The user equipment can be a mobile terminal, such as a mobile phone (or “cellular” phone) and a computer with a mobile terminal. For example, it can be a portable, pocket-sized, handheld, built-in computer or vehicle-mounted mobile device. , They exchange language and/or data with the wireless access network.

The base station can be a base station (BTS, Base Transceiver Station) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. The 5G base station (gNB) is not limited in the present invention, but for the convenience of description, the following embodiments take gNB as an example for description.

The technical solutions provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 2 is a schematic flowchart of a method for transmitting downlink control information provided in an embodiment of the present invention. The method 200 may be executed by a terminal device. In other words, the method can be executed by software or hardware installed on the terminal device. As shown in Figure 2, the method may include the following steps.

S210: Acquire multiple activated TCI states corresponding to CORESET.

In the embodiment of the present invention, the network device is configuring CORESET for the UE, and at the same time, the TCI state of the CORESET needs to be configured to indicate the search space (Search Space) bound by the CORESET. In order to enable CORESET to be sent jointly on multiple TRPs, the network side needs to activate multiple activated TCI states for CORESET.

In the embodiment of the present invention, the network device can configure multiple TCI states of one CORESET through radio resource control (RRC) configuration signaling, and activate multiple TCI states of CORESET through MAC CE. For example, for CORESET 1, the network device configures 10 TCI states for the UE through RRC configuration signaling. According to the network setting requirements, the network device activates two of the TCI states through MAC CE. The terminal device can obtain multiple activated TCI states corresponding to CORESET from the MAC CE.

S212: Receive the downlink control information transmitted on the PDCCH according to the activated TCI state of each time-frequency resource in the CORESET. Wherein, the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity, and is determined in the multiple activated TCI states according to a predetermined rule.

In the embodiment of the present invention, in order to adapt to the activation of a CORESET and multiple activated TCI states, the TCI state of each time-frequency resource of the CORESET can be configured based on a preset time-frequency resource granularity and according to a predetermined rule.

Figure 3 is a schematic diagram of the structure of a CORESET time-frequency resource. As shown in Figure 3, the CORESET resource is composed of multiple resource element groups (REG), among which 6 REGs can form a control channel element (CCE), and 6 REG can also form a REG bundle (bundle). Therefore, in a possible implementation manner, the preset time-frequency resource granularity may be a frequency domain granularity based on frequency domain division.

Optionally, the frequency domain granularity based on frequency domain division may include one of the following (1) to (6).

(1) The size of the REG bundle configured by CORESET. That is, the time-frequency resources of CORESET are divided into time-frequency resources one by one according to the size of one REG bundle, and the TCI state is configured for each time-frequency resource.

(2) CCE. That is, each CCE included in CORESET is configured with a TCI state).

(3) REG. That is, configure a TCI state for each REG included in CORESET.

(4) The precoding granularity of CORESET configuration. That is, the time-frequency resources of CORESET are divided into time-frequency resources one by one according to the precoding granularity, and the TCI state is configured for each time-frequency resource.

(5) The aggregation level of the PDCCH configured by CORESET.

(6) Candidate of the PDCCH configured by CORESET.

In another possible implementation manner, the preset time-frequency resource granularity may also be a time-domain granularity based on time-domain division. In this possible implementation manner, the PDCCH information on the CORESET is repeatedly sent on each resource of the time domain granularity based on the time domain division.

Optionally, the time domain granularity based on the time domain division may include one of the following (1) to (3).

(1) The search space (Search Space, SS) associated with the CORESET. That is, configure the TCI state of each resource of CORESET according to the SS associated with CORESET.

(2) The search space continuously monitors the number of time slots (duration) of the search space set.

(3) The number of locations where CORESET occurs in each time slot in the search space.

In a possible implementation manner, when determining the activated TCI state of each time-frequency resource in the CORESET according to a predetermined rule, it may be based on the number P of multiple activated TCI states and the CORESET time based on the granularity of the time-frequency resource. The quantity Q of frequency resources determines the activated TCI state of each time-frequency resource of CORESET.

For example, if P=Q, each activated TCI state is mapped to each time-frequency resource of CORESET, and the TCI state of each time-frequency resource of CORESET is different. If P<Q, some of the time-frequency resources of CORESET have the same TCI state. The details can be determined according to actual applications.

In a possible implementation manner, the predetermined rule includes: based on the time-frequency resource granularity, each time-frequency resource of the CORESET is configured with multiple activated TCI states on average.

Optionally, in the above average configuration mode, the following configuration mode may be adopted: the first time-frequency resource of the time-frequency resource granularity of the CORESET is the first TCI among the multiple activated TCI states State, the second time-frequency resource of the time-frequency resource granularity of the CORESET is the second TCI state among the multiple activated TCI states, and so on, the Nth time-frequency resource of the CORESET The time-frequency resource of the resource granularity is the Nth TCI state among the plurality of activated TCI states, and the N+1th time-frequency resource of the time-frequency resource granularity of the CORESET is the first TCI state , The N+2th time-frequency resource of the time-frequency resource granularity of the CORESET is the second TCI state, and so on, until the last time-frequency resource of the CORESET granularity of the time-frequency resource is determined The TCI state of the resource, where N is the number of the multiple activated TCI states.

For example, assume that CORESET is configured with two TCI states: TCI state1 and TCI state2. but:

(1) When the time-frequency resource granularity is configured as REG bundle, the time-frequency resource configuration with odd REG bundle index (index) is defined as TCI state1, and the time-frequency resource configuration with even REG bundle index is defined as TCI state2.

(2) When the time-frequency resource granularity is configured as CCE, it is defined that the time-frequency resource with odd CCE index is configured as TCI state1, and the time-frequency resource with even CCE index is configured as TCI state2.

(3) When the time-frequency resource granularity is the PDCCH aggregation level, assume that the CORESET configuration aggregation level is AL, and calculate the PDCCH pre-allocated CCE resources according to the hash formula in the relevant standards. The pre-allocated CCE resources are mapped according to the location of the aggregation level AL/2 CCE resources. Among them, each candidate of the AL is divided into two parts, the first part is configured as TCI state1, and the second part is configured as TCI state2. As shown in Figure 4a.

(4) When the time-frequency resource granularity is configured as the search space associated with CORSET, it is assumed that the number of search spaces associated with the CORESET is the same as the number of TCI states where the CORESET is activated. Define the time-frequency resource configuration of the first search space as TCI state1, and the time-frequency resource configuration of the second search space as TCI state2.

For example, in Figure 4b, the search spaces ss1 and ss2 are sent on different time slots. According to a predetermined rule, the search space ss1 is configured with the first TCI state, and the search space ss2 is configured with the second TCI state. The same PDCCH information is periodically and repeatedly sent on two TCI states, that is, two search spaces.

(5) When the time-frequency resource granularity is the number of time slots of the search space set for continuous monitoring of the search space, for example, in FIG. 4c, the search space for continuously monitoring two slots is currently configured. According to a predetermined rule, the SS on slot n is configured as the first TCI state, and the ss on slot n+1 is configured as the second TCI state. The same PDCCH information is periodically and repeatedly sent on the time slots corresponding to the two TCI states, namely slot n and slot n+1.

(6) When the time-frequency resource granularity is the number of locations or occurrences where CORESET occurs in each time slot in the search space, that is, based on the number of locations where CORESET occurs in each time slot of the SS. As shown in Figure 4d, there are two monitoring occasions in the Search Space of the current slot configuration. According to predetermined rules, occurrence1 is configured as the first TCI state, and occurrence2 is configured as the second TCI state. The same PDCCH information is periodically and repeatedly sent on two TCI states, that is, two occasions.

In the embodiment of the present invention, the predetermined rule may be pre-configured, and both the network device and the terminal device have been known. Alternatively, the predetermined rule may also be agreed in advance by the network device and the terminal device. Alternatively, the predetermined rule may also be configured on the network side, and then notified to the terminal device through signaling. Therefore, in a possible implementation manner, after S212, the method may further include: receiving a second preset signaling sent by the network side, wherein the second preset signaling carries an indication of the predetermined rule The second parameter.

For example, in the case where the resource granularity is divided by time and frequency, if the number of the multiple activated TCI states is 2, the second preset signaling may carry a series of bit sequences to indicate the TCI state of each time-frequency resource . For example, 0 represents TCI state 1, and 1 represents TCI state 2.

In the embodiment of the present invention, the preset time-frequency resource granularity may be pre-configured. For example, the preset time-frequency resource granularity may be configured to CCE through high-level signaling, or it may be network equipment and terminal equipment. Agreed. It may also be selected by the network device according to actual conditions. In this case, the network device needs to notify the terminal device of the preset time-frequency resource granularity of its selection. Therefore, in a possible implementation manner, before S212, the method may further include: receiving a first preset signaling sent by the network side, wherein the first preset signaling carries a command indicating the preset The first parameter of the time-frequency resource granularity.

In the embodiment of the present invention, the terminal device can determine the time-frequency resource granularity used when the network device configures each time-frequency resource of CORESET according to the first parameter.

In the embodiment of the present invention, the network device can notify the terminal device of multiple TCI states in which CORESET is activated through the downlink MAC CE. Therefore, in a possible implementation manner, the above-mentioned first parameter is also sent to the terminal device through the MAC CE, or, the above-mentioned first parameter can also be transmitted by using signaling different from the signaling for notifying the multiple TCI states that CORESET is activated. For example, the MAC CE instructs the terminal device to activate multiple TCI states of some CORESETs, for example, CORESET ID=1 to activate two TCI states. At the same time, other signaling is used to instruct the time-frequency resource of CORESET to configure two TCI states based on a certain resource granularity according to corresponding rules.

In the embodiment of the present invention, the first parameter indicating the preset time-frequency resource granularity may be indicated in an agreed manner, such as one of the foregoing various time-frequency resource granularity. Alternatively, the parameter value of the parameter may also be empty, indicating that all the multiple activated TCI states are configured for all the time-frequency resources of the CORESET.

In a possible implementation manner, the foregoing first preset signaling may also not carry a parameter indicating the granularity of the preset time-frequency resource. In this case, the network device is instructed to be all the time-frequency resources of the CORESET. All of the multiple activated TCI states are configured.

For example, if the CORESET corresponds to multiple activated TCI states, the first parameter of the first preset information is empty or does not carry the first parameter, which may indicate that all the time-frequency resources of the CORESET are configured for the multiple activated TCIs at the same time. Activate the TCI state.

According to the technical solution provided by the embodiment of the present invention, when CORESET is activated in multiple TCI states, the downlink control information transmitted on the PDCCH is received according to the activated TCI state of each time-frequency resource in the CORESET, where the CORESET is The activated TCI state of each time-frequency resource is based on the preset time-frequency resource granularity and is determined in the multiple activated TCI states according to predetermined rules, so that when CORESET corresponds to multiple activated TCI states, The downlink control information is transmitted so that the UE can receive the network control information transmitted by each TRP on the CORESET resource, which improves the transmission robustness.

FIG. 5 is a schematic flowchart of another method for transmitting downlink control information according to an embodiment of the present invention. The method 500 may be executed by a network device. In other words, the method can be executed by software or hardware installed on a network device. As shown in Figure 5, the method may include the following steps.

S510: Send instruction information to indicate multiple activated TCI states corresponding to CORESET.

S512, according to the activated TCI state of each time-frequency resource in the CORESET, downlink control information transmitted on the PDCCH. Wherein, the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity and is determined in the multiple activated TCI states according to a predetermined rule.

Wherein, the preset time-frequency resource granularity and the predetermined rule are the same as those in the method 200, and refer to the description in the method 200 for details.

In the embodiment of the present invention, the predetermined time-frequency resource granularity may be pre-configured by the network side through high-level signaling, or may be determined by the terminal device in advance with the network device, or may be determined by the network device and sent to the terminal device. of. If it is determined by the network device and sent to the terminal device, in a possible implementation manner, before S512, the method may further include: sending the first preset signaling, wherein the first preset signaling is The first parameter indicating the granularity of the preset time-frequency resource is carried.

In a possible implementation manner, the parameter value of the first parameter carried in the first preset signaling may be null. In this case, it indicates that all the time-frequency resources of the CORESET of the terminal device are Configure all the multiple activated TCI states.

The indication information indicating that the multiple activated TCI states of the CORESET are activated and the above-mentioned first parameter may be carried in the same signaling for notification, or may be notified through different signaling. For example, the network device can indicate the multiple activated TCI status indication information indicating that the CORESET is activated, and the first parameter is indicated to the terminal device through MAC CE, or it can be notified through different signaling. For details, please refer to the above method. Related description in 200.

In the embodiment of the present invention, the terminal device may determine the quasi-collocation (QCL) of the received PDCCH based on the activated TCI state of each time-frequency resource of the CORESET, and then receive the QCL transmitted on the PDCCH based on the QCL of the received PDCCH. Downlink control information.

In the embodiment of the present invention, the predetermined rule may be pre-agreed with the terminal device, or pre-configured, or may also be indicated to the terminal device after the network device determines it. Therefore, in a possible implementation manner, before S512, the method may further include: sending a second preset signaling, wherein the second preset signaling carries a second parameter indicating the predetermined rule .

Through the technical solution provided by the embodiment of the present invention, when the network device transmits downlink control information, it determines the activated TCI state of each time-frequency resource configuration of CORESET based on the preset time-frequency resource granularity and predetermined rules, so that it can correspond to CORESET When there are multiple activated TCI states, downlink control information is transmitted.

In the related art, the PDCCH schedules the physical downlink shared channel (PDSCH), and the downlink control information (DCI) sent by the network device to the UE through the PDCCH indicates the spatial reception beam information (ie, the TCI state) of the PDSCH scheduled by the PDCCH. Therefore, only after the UE monitors the DCI can it correctly interpret the TCI state and determine the receiving beam used to receive the PDSCH scheduled by the PDCCH. However, it takes a certain time for the UE to detect DCI and switch beams according to the TCI indication, such as the threshold timeDurationForQCL. If the time offset between DCI and its scheduled PDSCH is the last symbol of the PDCCH where DCI is located and the first of its scheduled PDSCH If the time interval between the symbols is greater than or equal to the threshold timeDurationForQCL, the UE cannot determine the TCI state or QCL relationship of the received PDSCH.

In view of the foregoing problems, an embodiment of the present invention provides a PDSCH receiving method.

FIG. 6 is a schematic flowchart of a method for receiving PDSCH according to an embodiment of the present invention. The method 600 may be executed by a terminal device. In other words, the method can be executed by software or hardware installed on the terminal device. As shown in Figure 6, the method may include the following steps.

S610: In the case that at least one CORESET in the first CORESET corresponds to multiple activated TCI states, the MAC CE configures multiple code points for the PDSCH, and each of the code points maps a TCI state, if the received When the time offset between the downlink control information (DCI) and the corresponding PDSCH is less than the receiving processing capability threshold reported by the terminal device, the TCI state or QCL relationship of the received PDSCH is determined according to a predetermined manner, where: The first CORESET is all CORESETs on the bandwidth part (Bandwidth Part, BWP) of the active carrier of the serving cell monitored in the time slot closest to the DCI.

In a possible implementation manner, determining the TCI state or QCL relationship of the received PDSCH according to a predetermined manner includes: determining the TCI state and/or QCL relationship of the received PDSCH according to the TCI state of the target CORESET, wherein The target CORESET belongs to one of the first CORESETs, where the first CORESET is all CORESETs on the bandwidth part (Bandwidth Part, BWP) of the monitored serving cell activated in the time slot.

In a possible implementation, the target CORESET can include one of the following:

(1) If there is at least one second CORESET in the first CORESET, the target CORESET is the CORESET with the smallest CORESET identifier in the second CORESET, and the second CORESET is configured with only one TCI state; correspondingly Ground, the UE may determine that the TCI state of the received PDSCH and the TCI state of the target CORESET are in a QCL relationship.

(2) If each first CORESET is configured with multiple activated TCI states, the target CORESET is the CORESET with the smallest CORESET identifier in the first CORESET; correspondingly, the UE can determine to receive the TCI of the PDSCH The state is in a QCL relationship with the first TCI state of the target CORESET or the TCI state with the smallest identifier.

(3) The first CORESET includes at least one third CORESET, the target CORESET is the CORESET with the smallest CORESET identifier in the third CORESET, and the third CORESET is configured with multiple activated TCI states. Correspondingly, the UE may determine that the multiple activated TCI states receiving the PDSCH and the multiple activated TCI states of the target CORESET are in a one-to-one mapping QCL relationship.

In a possible implementation, the TCI status or QCL relationship of the received PDSCH can also be determined based on the TCI status of the code point. Therefore, in this possible implementation manner, according to a predetermined manner, determining the TCI state or QCL relationship of the received PDSCH may include: determining that the TCI state of the received PDSCH and the TCI state of the target code point are in a QCL relationship, where The target code point is the code point with the smallest index among the multiple code points. That is, the target code point is the code point with the smallest index configured for the PDSCH in the MAC CE.

In the embodiment of the present invention, when the control resource set (CORESET) may activate multiple TCI states, and the offset between the DCI received by the terminal device and the corresponding PDSCH is less than the receiving processing capability threshold reported by the terminal device, the terminal device The TCI status of CORESET and the TCI status of PDSCH or the TCI status of codepoints determine the TCI or QCL of the received PDSCH. This can solve the problem of receiving PDSCH when the offset is less than the receiving processing capability threshold reported by the terminal device.

FIG. 7 is a schematic structural diagram of a network device provided by an embodiment of the present invention. As shown in FIG. 7, the network device 700 includes: a sending module 710, configured to send instruction information to indicate multiple activated TCI states corresponding to CORESET The transmission module 720 is used to transmit downlink control information on the PDCCH according to the activated TCI state of each time-frequency resource in the CORESET; wherein, the activated TCI state of each time-frequency resource in the CORESET is based on a preset The time-frequency resource granularity is determined in the multiple activated TCI states according to a predetermined rule.

In a possible implementation, the sending module 710 is further configured to send first preset signaling, where the first preset signaling carries a first parameter indicating the preset time-frequency resource granularity.

In a possible implementation manner, the sending module 710 is further configured to send second preset signaling, where the second preset signaling carries a second parameter indicating the predetermined rule.

The network device provided by the embodiment of the present invention can implement the various processes implemented by the network device in the foregoing method embodiments of FIG. 2 to FIG. 6 and achieve the same effect. To avoid repetition, details are not described herein again.

FIG. 8 is a schematic structural diagram of a terminal device provided by an embodiment of the present invention. As shown in FIG. 8, the terminal device 800 includes: an acquiring module 810, configured to acquire multiple activated transmission configuration indications corresponding to a control resource set (CORESET) (TCI) status; and a receiving module 820, used for receiving module, used to receive the downlink control information transmitted on the physical downlink control channel (PDCCH) according to the activated TCI status of each time-frequency resource in the CORESET; The activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity and is determined in the multiple activated TCI states according to a predetermined rule.

In a possible implementation manner, the preset time-frequency resource granularity includes: frequency domain granularity based on frequency domain division, or time domain granularity based on time domain division.

In a possible implementation, the frequency domain granularity based on frequency domain division includes one of the following:

The size of the resource element group (REG) bundle configured in CORESET;

Precoding granularity configured in CORESET;

The aggregation level of the physical downlink control channel (PDCCH) configured in CORESET;

PDCCH alternatives configured in CORESET;

REG;

Control Channel Element (CCE).

In a possible implementation, the time domain granularity based on time domain division includes one of the following:

The search space associated with the CORESET;

The search space continuously monitors the number of time slots in the search space set;

The number of positions where CORESET occurs in each time slot in the search space.

In a possible implementation manner, the predetermined rule includes:

Based on the time-frequency resource granularity, each time-frequency resource of the CORESET is configured with multiple activated TCI states on average.

In a possible implementation manner, each time-frequency resource of the CORESET averagely configures multiple activated TCI states, including:

The first time-frequency resource of the time-frequency resource granularity of the CORESET is the first TCI state among the multiple activated TCI states, and the second time-frequency resource of the CORESET is the time-frequency resource granularity of the time-frequency resource. The resource is the second TCI state among the multiple activated TCI states, and so on, the Nth time-frequency resource of the time-frequency resource granularity of the CORESET is the second TCI state among the multiple activated TCI states. N TCI states, the N+1th time-frequency resource of the time-frequency resource granularity of the CORESET is the first TCI state, and the N+2th time-frequency resource granularity of the CORESET is the time-frequency resource granularity The frequency resource is the second TCI state, and the cycle continues until the last time-frequency resource of the time-frequency resource granularity of the CORESET, where N is the number of the multiple activated TCI states.

In a possible implementation manner, the receiving module 820 is further configured to receive first preset signaling sent by the network side, where the first preset signaling carries an indication of the preset time-frequency resource granularity The first parameter.

In a possible implementation manner, if the first parameter is empty, it indicates that all the time-frequency resources of the CORESET are configured with all the multiple activated TCI states.

In a possible implementation manner, the receiving module 820 is further configured to receive second preset signaling sent by the network side, where the second preset signaling carries a second parameter indicating the predetermined rule.

The terminal device provided by the embodiment of the present invention can implement each process implemented by the terminal device in each method embodiment of FIG. 2 to FIG. 5, and achieve the same effect. To avoid repetition, details are not described herein again.

Fig. 9 is a schematic structural diagram of another terminal device provided by an embodiment of the present invention. As shown in Fig. 9, the network device 900 includes: a determining module 910, configured to have at least one CORESET in the first CORESET corresponding to multiple passives. When the TCI state is activated, the MAC control unit CE of the media access control layer configures multiple code points for the PDSCH, and each of the code points is mapped to a TCI state, if the received downlink control information DCI and PDSCH is If the time offset is less than the receiving processing capability threshold reported by the terminal device, the TCI state or QCL relationship of the received PDSCH is determined in a predetermined manner, wherein the first CORESET is the time closest to the DCI All CORESETs on the BWP of the carrier bandwidth part of the activated serving cell monitored on the slot.

In a possible implementation manner, the determining module 910 determining the TCI state or QCL relationship of the received PDSCH according to a predetermined manner includes:

According to the TCI state of the target CORESET, determine the TCI state and/or QCL relationship of the received PDSCH, where the target CORESET belongs to one of the first CORESETs, and the first CORESET is the monitoring in the time slot All CORESETs on the BWP of the activated carrier bandwidth of the serving cell.

In a possible implementation manner, the target CORESET includes one of the following:

If there is at least one second CORESET in the first CORESET, the target CORESET is the CORESET with the smallest CORESET identifier in the first CORESET, wherein only one TCI state is configured in the second CORESET;

If each of the first CORESETs is configured with multiple activated TCI states, the target CORESET is the CORESET with the smallest CORESET identifier among the first CORESETs;

The first CORESET includes at least one third CORESET, the target CORESET is the CORESET with the smallest CORESET identifier in the third CORESET, and the third CORESET is configured with multiple activated TCI states.

In a possible implementation manner, the determining module 910 determines the TCI state and/or QCL relationship of receiving the PDSCH according to the TCI state of the target CORESET, including:

If the target CORESET is the CORESET with the smallest CORESET identifier in the second CORESET, it is determined that the TCI state of the received PDSCH and the TCI state of the target CORESET are in a QCL relationship;

If the target CORESET is the CORESET with the smallest CORESET identifier among the first CORESETs, determining that the TCI state of the received PDSCH and the first TCI state of the target CORESET or the TCI state with the smallest identifier are in a QCL relationship;

If the target CORESET is the CORESET with the smallest CORESET identifier in the third CORESET, it is determined that the multiple activated TCI states receiving the PDSCH and the multiple activated TCI states of the target CORESET are a one-to-one mapping QCL relationship .

In a possible implementation manner, the determining module 910 determines the TCI state or QCL relationship of the received PDSCH in a predetermined manner including: determining that the TCI state of the received PDSCH and the TCI state of the target code point are in a QCL relationship, where The target code point is the code point with the smallest index among the multiple code points.

The terminal device provided by the embodiment of the present invention can implement each process implemented by the terminal device in the method embodiment of FIG. 6 and achieve the same effect. To avoid repetition, details are not described herein again.

Fig. 10 is a block diagram of a terminal device according to another embodiment of the present invention. The terminal device 1000 shown in FIG. 10 includes: at least one processor 1001, a memory 1002, at least one network interface 1004, and a user interface 1003. The various components in the terminal device 1000 are coupled together through the bus system 1005. It can be understood that the bus system 1005 is used to implement connection and communication between these components. In addition to the data bus, the bus system 1005 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear description, various buses are marked as the bus system 1005 in FIG. 10.

Wherein, the user interface 1003 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.).

It can be understood that the memory 1002 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Link Dynamic Random Access Memory (Synch Link DRAM, SLDRAM) ) And Direct Rambus RAM (DRRAM). The memory 1002 of the system and method described in the embodiment of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

In some embodiments, the memory 1002 stores the following elements, executable modules or data structures, or a subset of them, or an extended set of them: operating system 10021 and application programs 10022.

Among them, the operating system 10021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 10022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services. The program for implementing the method of the embodiment of the present invention may be included in the application program 10022.

In the embodiment of the present invention, the terminal device 1000 further includes: a computer program that is stored in the memory 1002 and can be run on the processor 1001. When the computer program is executed by the processor 1001, the following steps are implemented: acquiring the control resource set CORESET corresponding to the Each activated transmission configuration indicates the TCI status; according to the activated TCI status of each time-frequency resource in the CORESET, the downlink control information transmitted on the physical downlink control channel PDCCH is received; wherein, each time-frequency resource in the CORESET is activated The TCI state is based on a preset time-frequency resource granularity, and is determined in the multiple activated TCI states according to a predetermined rule. Or, at least one CORESET in the first CORESET corresponds to multiple activated TCI states, the MAC control unit CE of the media access control layer configures multiple code points for the PDSCH, and each of the code points is mapped to a TCI state. In this case, if the time offset between the received downlink control information DCI and PDSCH is less than the receiving processing capability threshold reported by the terminal device, the TCI status or QCL relationship of the received PDSCH is determined according to a predetermined manner Wherein, the PDSCH corresponds to the PDSCH, and the first CORESET is all CORESETs on the BWP of the activated carrier bandwidth of the serving cell monitored on the time slot closest to the DCI.

The method disclosed in the foregoing embodiment of the present invention may be applied to the processor 1001 or implemented by the processor 1001. The processor 1001 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 1001 or instructions in the form of software. The foregoing processor 1001 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present invention may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a computer-readable storage medium that is mature in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The computer-readable storage medium is located in the memory 1002, and the processor 1001 reads information in the memory 1002, and completes the steps of the foregoing method in combination with its hardware. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 1001, each step in the above-mentioned method 500 or method 600 is implemented, and the same effect is achieved.

It can be understood that the embodiments described in the embodiments of the present invention may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing equipment (DSP Device, DSPD), programmable Logic device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and others for performing the functions described in the present invention Electronic unit or its combination.

For software implementation, the technology described in the embodiments of the present invention can be implemented by modules (for example, procedures, functions, etc.) that execute the functions described in the embodiments of the present invention. The software codes can be stored in the memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

The terminal device 1000 can implement each process implemented by the terminal device in the foregoing method 200 to method 600, and in order to avoid repetition, details are not described herein again.

Please refer to FIG. 11. FIG. 11 is a structural diagram of a network device applied in an embodiment of the present invention, which can implement various details in the method 300 and achieve the same effect. As shown in FIG. 11, the network device 1100 includes: a processor 1101, a transceiver 1102, a memory 1103, a user interface 1104, and a bus interface, where:

In the embodiment of the present invention, the network side device 1100 further includes: a computer program that is stored in the memory 1103 and can run on the processor 1101, and the computer program is executed by the processor 1101 to implement the following steps:

Send instruction information to indicate the multiple activated TCI states corresponding to CORESET; according to the activated TCI state of each time-frequency resource in the CORESET, the downlink control information transmitted on the PDCCH; wherein, each time-frequency resource in the CORESET The activated TCI state is based on a preset time-frequency resource granularity, and is determined among the multiple activated TCI states according to a predetermined rule.

In FIG. 11, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1101 and various circuits of the memory represented by the memory 1103 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 1102 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium. For different user equipment, the user interface 1104 may also be an interface capable of connecting externally and internally with the required equipment. The connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 can store data used by the processor 1101 when performing operations.

The network device 1100 can implement each process implemented by the network device in the foregoing method 200 to method 600, and achieve the same effect. To avoid repetition, details are not described herein again.

The embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, each process of the foregoing method 200, method 500, or method 600 embodiments is implemented. And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disk, or optical disk, etc.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements that are not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element.

Through the description of the above implementation manners, those skilled in the art can clearly understand that the above-mentioned embodiment method can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present invention.

The embodiments of the present invention are described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present invention, many forms can be made without departing from the purpose of the present invention and the scope of protection of the claims, and they all fall within the protection of the present invention.

Claims (23)

1. A method for transmitting downlink control information is applied to terminal equipment, and the method includes:

   Acquire multiple activated transmission configuration indication TCI states corresponding to the control resource set CORESET;

   Receive the downlink control information transmitted on the physical downlink control channel PDCCH according to the activated TCI state of each time-frequency resource in the CORESET; wherein, the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency The resource granularity is determined in the multiple activated TCI states according to predetermined rules.
2. The method according to claim 1, wherein the preset time-frequency resource granularity comprises: frequency domain granularity based on frequency domain division, or time domain granularity based on time domain division.
3. The method according to claim 2, wherein the frequency domain granularity based on frequency domain division includes one of the following:

   The size of the resource element group REG bundle configured in CORESET;

   Precoding granularity configured in CORESET;

   The aggregation level of the physical downlink control channel PDCCH configured in CORESET;

   PDCCH alternatives configured in CORESET;

   REG;

   Control channel element CCE.
4. The method according to claim 2, wherein the time domain granularity based on the time domain division comprises one of the following:

   The search space associated with the CORESET;

   The search space continuously monitors the number of time slots in the search space set;

   The number of positions where CORESET occurs in each time slot in the search space.
5. The method of claim 1, wherein the predetermined rule comprises:

   Based on the time-frequency resource granularity, each time-frequency resource of the CORESET is configured with multiple activated TCI states on average.
6. The method according to claim 5, wherein each time-frequency resource of the CORESET is configured to average a plurality of the activated TCI states, comprising:

   The first time-frequency resource of the time-frequency resource granularity of the CORESET is the first TCI state among the multiple activated TCI states, and the second time-frequency resource of the CORESET is the time-frequency resource granularity of the time-frequency resource. The resource is the second TCI state among the multiple activated TCI states, and so on, the Nth time-frequency resource of the time-frequency resource granularity of the CORESET is the second TCI state among the multiple activated TCI states. N TCI states, the N+1th time-frequency resource of the time-frequency resource granularity of the CORESET is the first TCI state, and the N+2th time-frequency resource granularity of the CORESET is the time-frequency resource granularity The frequency resource is the second TCI state, and the cycle continues until the last time-frequency resource of the time-frequency resource granularity of the CORESET, where N is the number of the multiple activated TCI states.
7. The method according to any one of claims 1 to 6, wherein, before receiving the downlink control information transmitted on the physical downlink control channel PDCCH according to the activated TCI state of each time-frequency resource in the CORESET, the method The method further includes: receiving first preset signaling sent by the network side, where the first preset signaling carries a first parameter indicating the preset time-frequency resource granularity.
8. 7. The method of claim 7, wherein if the first parameter is empty, it indicates that all the time-frequency resources of the CORESET are configured with all the multiple activated TCI states.
9. The method according to any one of claims 1 to 6, wherein, before receiving the downlink control information transmitted on the physical downlink control channel PDCCH according to the activated TCI state of each time-frequency resource in the CORESET, the method The method further includes: receiving a second preset signaling sent by the network side, wherein the second preset signaling carries a second parameter indicating the predetermined rule.
10. A method for transmitting downlink control information is applied to network equipment, and the method includes:

    Send instruction information to indicate multiple activated TCI states corresponding to CORESET;

    The downlink control information transmitted on the PDCCH according to the activated TCI state of each time-frequency resource in the CORESET; wherein the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity, and Determined in the plurality of activated TCI states according to predetermined rules.
11. The method according to claim 10, wherein, before the downlink control information transmitted on the PDCCH according to the activated TCI state of each time-frequency resource in the CORESET, the method further comprises:

    Sending the first preset signaling, where the first preset signaling carries a first parameter indicating the granularity of the preset time-frequency resource.
12. The method according to claim 10, wherein, before the downlink control information transmitted on the PDCCH according to the activated TCI state of each time-frequency resource in the CORESET, the method further comprises:

    Sending second preset signaling, where the second preset signaling carries a second parameter indicating the predetermined rule.
13. A method for receiving physical downlink shared channel PDSCH, which is applied to terminal equipment, and the method includes:

    In the case where at least one CORESET in the first CORESET corresponds to multiple activated TCI states, the media access control layer MAC control unit CE configures multiple code points for the PDSCH, and each of the code points maps a TCI state respectively If the time offset between the received downlink control information DCI and PDSCH is less than the receiving processing capability threshold reported by the terminal device, the TCI state or QCL relationship of the received PDSCH is determined according to a predetermined manner, where The DCI corresponds to the PDSCH, and the first CORESET is all CORESETs on the BWP of the active carrier bandwidth of the service cell monitored on the time slot closest to the DCI.
14. The method of claim 13, wherein, in a predetermined manner, determining the TCI state or QCL relationship of the received PDSCH comprises:

    According to the TCI state of the target CORESET, it is determined to receive the TCI state and/or QCL relationship of the PDSCH, where the target CORESET belongs to one of the first CORESETs.
15. The method of claim 14, wherein the target CORESET includes one of the following:

    If there is at least one second CORESET in the first CORESET, the target CORESET is the CORESET with the smallest CORESET identifier in the first CORESET, where only one TCI state is configured in the second CORESET;

    If each of the first CORESETs is configured with multiple activated TCI states, the target CORESET is the CORESET with the smallest CORESET identifier among the first CORESETs;

    The first CORESET includes at least one third CORESET, the target CORESET is the CORESET with the smallest CORESET identifier in the third CORESET, and the third CORESET is configured with multiple activated TCI states.
16. The method according to claim 15, wherein determining the TCI state and/or QCL relationship of receiving the PDSCH according to the TCI state of the target CORESET comprises:

    If the target CORESET is the CORESET with the smallest CORESET identifier in the second CORESET, it is determined that the TCI state of the received PDSCH and the TCI state of the target CORESET are in a QCL relationship;

    If the target CORESET is the CORESET with the smallest CORESET identifier among the first CORESETs, determining that the TCI state of the received PDSCH and the first TCI state of the target CORESET or the TCI state with the smallest identifier are in a QCL relationship;

    If the target CORESET is the CORESET with the smallest CORESET identifier in the third CORESET, it is determined that the multiple activated TCI states receiving the PDSCH and the multiple activated TCI states of the target CORESET are a one-to-one mapping QCL relationship .
17. The method of claim 13, wherein, in a predetermined manner, determining the TCI state or QCL relationship of the received PDSCH comprises:

    It is determined that the TCI state of the received PDSCH and the TCI state of the target code point are in a QCL relationship, where the target code point is the code point with the smallest index among the multiple code points.
18. A terminal device, including:

    The acquiring module is used to acquire multiple activated transmission configuration indication TCI states corresponding to the control resource set CORESET;

    The receiving module is configured to receive the downlink control information transmitted on the physical downlink control channel PDCCH according to the activated TCI state of each time-frequency resource in the CORESET; wherein, the activated TCI state of each time-frequency resource in the CORESET is based on The preset time-frequency resource granularity is determined in the multiple activated TCI states according to a predetermined rule.
19. A network device including:

    The sending module is used to send instruction information to indicate the state of multiple activated TCIs corresponding to CORESET;

    The transmission module is used to transmit downlink control information on the PDCCH according to the activated TCI state of each time-frequency resource in the CORESET; wherein, the activated TCI state of each time-frequency resource in the CORESET is based on a preset time The frequency resource granularity is determined in the multiple activated TCI states according to a predetermined rule.
20. A terminal device, including:

    The determining module is used for at least one CORESET in the first CORESET corresponding to multiple activated TCI states, the MAC control unit CE of the media access control layer configures multiple code points for the PDSCH, and each of the code points is mapped to one In the case of the TCI state, if the time offset between the received downlink control information DCI and the PDSCH is less than the receiving processing capability threshold reported by the terminal device, the TCI state of the received PDSCH is determined according to a predetermined manner Or QCL relationship, where the first CORESET is all CORESETs monitored in the time slot closest to the DCI.
21. A terminal device includes: a memory, a processor, and a computer program stored on the memory and capable of running on the processor, and the computer program is implemented when the processor is executed:

    The steps of the method according to any one of claims 1 to 9; or

    The steps of the method according to any one of claims 13 to 17.
22. A network device, comprising: a memory, a processor, and a computer program stored on the memory and capable of running on the processor, the computer program being executed by the processor is implemented as in claims 10 to 12 Any of the steps of the method.
23. A computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the following is achieved:

    The steps of the method according to any one of claims 1 to 9; or

    The steps of the method according to any one of claims 10 to 12;

    The steps of the method according to any one of claims 13 to 17.

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