CN116846432A

CN116846432A - Method and apparatus in a node for wireless communication

Info

Publication number: CN116846432A
Application number: CN202210303706.XA
Authority: CN
Inventors: 蒋琦; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2023-10-03
Also published as: WO2023179471A1

Abstract

A method and apparatus in a node for wireless communication is disclosed. The node first receives first signaling, wherein the first signaling is used for indicating a first index; then detecting a PDCCH candidate in the first resource set pool; the first index is associated to a first reference signal resource, the first resource set pool including a first PDCCH candidate and a second PDCCH candidate; the first PDCCH candidate is connected to the second PDCCH candidate; the first PDCCH candidate and the second PDCCH candidate are respectively connected with a first candidate reference signal resource and a second candidate reference signal resource QCL; whether the first reference signal resource is used to determine one of the first candidate reference signal resource or the second candidate reference signal resource is related to whether the first index is associated with a second reference signal resource. The application improves the application mode of unified TCI to improve the flexibility of the system.

Description

Method and apparatus in a node for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a design scheme and apparatus of control signaling in wireless communication.

Background

In 5G NR (New Radio), massive (Massive) MIMO (Multi-Input Multi-Output) is an important technology. In massive MIMO, a plurality of antennas are formed into narrower beams by Beamforming (Beamforming), which are directed in a specific direction to improve communication quality. In 5G NR, a core (Control Resource Set ) for PDCCH (Physical Downlink Control Channel, physical downlink control channel) monitoring and a Search Space Set (Search Space Set) are defined, each Search Space Set being associated with a core, and PDCCH alternatives in core, when received, use a spatial reception parameter corresponding to a TCI (Transmission Configuration Indication ).

In the discussion of NR R17, for a Multi-TRP (transmit receive node) scenario, to increase the reliability of the PDCCH, a terminal may jointly detect two PDCCH alternatives (candidates) in a set of search spaces that are correlated together to improve performance, where the two PDCCH alternatives may be transmitted with different beams by the two TRPs, respectively. Meanwhile, in the 3GPP RAN (Radio Access Network ) 1#103e conference, a technique of simultaneously updating beams of a control channel and a data channel using physical layer signaling has been adopted.

Disclosure of Invention

The inventors found through research that M-TRP is not supported for use with Unified (Unified) TCI in the current NR system, i.e. when Unified TCI is updated to PDCCH or reception of PDSCH (Physical Downlink Shared Channel ), the scenario of transmitting PDCCH through PDCCH alternative combinations in two CORESET pools under M-TRP is not considered.

In view of the above, the present application discloses a solution. It should be noted that, although the above description uses massive MIMO and beam-based communication scenarios as examples, the present application is also applicable to other scenarios such as LTE multi-antenna systems, and achieves technical effects similar to those in massive MIMO and beam-based communication scenarios. Furthermore, the adoption of unified solutions for different scenarios (including but not limited to massive MIMO, beam-based communication and LTE multi-antenna systems) also helps to reduce hardware complexity and cost. Embodiments of the application and features in embodiments may be applied to any other node and vice versa without conflict. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.

Further, embodiments of the present application and features of embodiments may be applied to a second node device and vice versa without conflict. In particular, the term (Terminology), noun, function, variable in the present application may be interpreted (if not specifically described) with reference to the definitions in the 3GPP specification protocols TS (Technical Specification) series, TS38 series, TS37 series.

The application discloses a method in a first node for wireless communication, comprising the following steps:

receiving first signaling, wherein the first signaling is used for indicating a first index;

detecting a PDCCH candidate in a first resource set pool;

wherein the first index is associated to a first reference signal resource, the first resource set pool comprising a first CORESET and a second CORESET, the first CORESET and the second CORESET comprising a first PDCCH candidate and a second PDCCH candidate, respectively; the first PDCCH candidate is connected to the second PDCCH candidate; demodulation reference signals included in PDCCHs transmitted in the first PDCCH candidate and first candidate reference signal resources are QCL (Quasi Co-located), and demodulation reference signals included in PDCCHs transmitted in the second PDCCH candidate and second candidate reference signal resources are QCL; the first candidate reference signal resource and the second candidate reference signal resource are different; whether the first reference signal resource is used to determine one of the first candidate reference signal resource or the second candidate reference signal resource is related to whether the first index is associated with a second reference signal resource.

As an embodiment, the above method is characterized in that: when a unified TCI update is carried over DCI (Downlink Control Information ), the update is valid for the connected set of search spaces, depending on whether the unified TCI can indicate two TCI-states.

According to one aspect of the application, the first index is associated to a second reference signal resource, and the first and second reference signal resources are used to determine the first and second candidate reference signal resources, respectively; or the first index is not associated to the second reference signal resource, the first reference signal resource is not used to determine at least the latter of the first candidate reference signal resource or the second candidate reference signal resource.

As an embodiment, the above method is characterized in that: when the DCI is capable of indicating two TCIs, the two TCIs are used to update QCL relationships of PDCCH candidates in two connected search space sets, respectively; when the DCI indicates only one TCI, the TCI is not used to update the QCL relation of PDCCH candidates in the two connected search space sets.

According to one aspect of the application, it comprises:

receiving second signaling, the second signaling being used to indicate a second index;

wherein the second signaling is earlier than the first signaling, the second index being associated to third and fourth reference signal resources, the third and fourth reference signal resources being used to determine the first and second candidate reference signal resources, respectively.

As an embodiment, the above method is characterized in that: when there are two DCIs used to update the QCL relationship, the DCI for updating the connected set of search spaces needs to indicate two TCIs, the DCI indicating one TCI is not used to update the QCL relationship of the two connected set of search spaces.

According to an aspect of the application, whether DCI occupying the first PDCCH candidate and DCI occupying the second PDCCH candidate are used to schedule the same channel or signal is related to whether the first index is associated to the second reference signal resource.

As an embodiment, the above method is characterized in that: the DCI for updating the QCL relation can also let two connected sets of search spaces be disconnected.

According to one aspect of the application, it comprises:

receiving a first signal;

wherein the first index is associated only to the first reference signal resource, the first node detects a first DCI in the first resource set pool, the first DCI occupying the first PDCCH candidate and the second PDCCH candidate, the first DCI being used to indicate the first signal, the demodulation reference signal occupied by the first signal being QCL with the first reference signal resource.

According to one aspect of the application, it comprises:

transmitting a first signal;

As an embodiment, the above method is characterized in that: when the DCI indicates only one TCI, the above TCI is used to update the QCL relation of the data channel, and the QCL relation of the control channel is not updated.

According to one aspect of the application, it comprises:

receiving a second signal;

wherein the first index is associated to the first reference signal resource and the second reference signal resource, the first node detects a second DCI in the first resource set pool, the second DCI occupying the first PDCCH candidate and the second PDCCH candidate, the second DCI being used to indicate the second signal, the second signal including a first sub-signal and a second sub-signal, the demodulation reference signal occupied by the first sub-signal being QCL with the first reference signal resource, and the demodulation reference signal occupied by the second sub-signal being QCL with the second reference signal resource.

According to one aspect of the application, it comprises:

transmitting a second signal;

As an embodiment, the above method is characterized in that: when the DCI indicates two TCIs, the two TCIs are used to update both the QCL relationship of the data channel and the QCL relationship of the control channel.

As an embodiment, another technical feature of the above method is that: when the DCI indicates two TCIs, the data channel with updated QCL relation is sent in a space division multiplexing mode.

According to one aspect of the application, it comprises:

transmitting a first information block in a first time-frequency resource block;

wherein the first information block includes HARQ-ACKs for the first signaling or HARQ-ACKs for PDSCH transmissions scheduled by the first signaling; the first index in the first signaling is used to indicate a first TCI state set; when the first index in the first signaling is used to indicate a TCI state for at least one of a first CORESET pool and a second CORESET pool, the first set of TCI states is used to monitor the at least one CORESET in the first CORESET pool and the second CORESET pool from a first time, the first time-frequency resource block is used to determine the first time; the first resource collection pool includes the first CORESET pool including the first CORESET and the second CORESET pool including the second CORESET.

According to one aspect of the application, it comprises:

detecting PDCCH candidates in a second set of resources;

wherein the first index is not associated to the second reference signal resource, the first reference signal resource being used to determine spatial reception parameters of PDCCH candidates included in the second set of resources; the PDCCH candidates included in the second resource set are not connected to any PDCCH candidate other than the second resource set.

As an embodiment, the above method is characterized in that: when the DCI indicates only one TCI, only those QCL relationships that do not relate to PDCCH candidates in the search space set associated with other search space sets are modified by the TCI.

The application discloses a method in a second node for wireless communication, comprising the following steps:

transmitting first signaling, wherein the first signaling is used for indicating a first index;

transmitting a target PDCCH in a first resource set pool;

wherein the target PDCCH occupies at least one PDCCH candidate in the first resource set pool; the first index is associated to a first reference signal resource, the first resource set pool includes a first CORESET and a second CORESET, the first CORESET and the second CORESET including a first PDCCH candidate and a second PDCCH candidate, respectively; the first PDCCH candidate is connected to the second PDCCH candidate; demodulation reference signals and first candidate reference signal resources included in PDCCH transmitted in the first PDCCH candidate are QCL, and demodulation reference signals and second candidate reference signal resources included in PDCCH transmitted in the second PDCCH candidate are QCL; the first candidate reference signal resource and the second candidate reference signal resource are different; whether the first reference signal resource is used to determine one of the first candidate reference signal resource or the second candidate reference signal resource is related to whether the first index is associated with a second reference signal resource.

According to one aspect of the application, it comprises:

transmitting second signaling, the second signaling being used to indicate a second index;

According to one aspect of the application, it comprises:

transmitting a first signal;

According to one aspect of the application, it comprises:

receiving a first signal;

According to one aspect of the application, it comprises:

transmitting a second signal;

According to one aspect of the application, it comprises:

receiving a second signal;

According to one aspect of the application, it comprises:

receiving a first information block in a first time-frequency resource block;

According to one aspect of the application, it comprises:

transmitting the PDCCH in the second resource set;

wherein the PDCCH occupies one PDCCH candidate in the second resource set; the first index is not associated to the second reference signal resource, the first reference signal resource being used to determine spatial reception parameters of PDCCH candidates included in the second set of resources; the PDCCH candidates included in the second resource set are not connected to any PDCCH candidate other than the second resource set.

The application discloses a first node for wireless communication, comprising:

a first receiver that receives first signaling, the first signaling being used to indicate a first index;

a first transceiver detecting PDCCH candidates in a first resource set pool;

wherein the first index is associated to a first reference signal resource, the first resource set pool comprising a first CORESET and a second CORESET, the first CORESET and the second CORESET comprising a first PDCCH candidate and a second PDCCH candidate, respectively; the first PDCCH candidate is connected to the second PDCCH candidate; demodulation reference signals and first candidate reference signal resources included in PDCCH transmitted in the first PDCCH candidate are QCL, and demodulation reference signals and second candidate reference signal resources included in PDCCH transmitted in the second PDCCH candidate are QCL; the first candidate reference signal resource and the second candidate reference signal resource are different; whether the first reference signal resource is used to determine one of the first candidate reference signal resource or the second candidate reference signal resource is related to whether the first index is associated with a second reference signal resource.

The application discloses a second node for wireless communication, comprising:

a first transmitter that transmits first signaling, the first signaling being used to indicate a first index;

a second transceiver transmitting the target PDCCH in the first resource set pool;

As an embodiment, the present application has advantages over conventional solutions in that: and optimizing a unified DCI updating connection search space set mode under the M-TRP to improve the system flexibility and reduce the signaling overhead.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings in which:

FIG. 1 illustrates a process flow diagram of a first node according to one embodiment of the application;

FIG. 2 shows a schematic diagram of a network architecture according to one embodiment of the application;

fig. 3 shows a schematic diagram of an embodiment of a radio protocol architecture of a user plane and a control plane according to an embodiment of the application;

FIG. 4 shows a schematic diagram of a first communication device and a second communication device according to one embodiment of the application;

figure 5 shows a flow chart of a first signaling according to an embodiment of the application;

figure 6 shows a flow chart of a second signaling according to an embodiment of the application;

FIG. 7 shows a flow chart of a first signal according to one embodiment of the application;

fig. 8 shows a flow chart of a first signal according to another embodiment of the application;

FIG. 9 shows a flow chart of a second signal according to an embodiment of the application;

FIG. 10 shows a flow chart of a second signal according to another embodiment of the application;

FIG. 11 shows a flow diagram of detecting PDCCH candidates according to an embodiment of the present application;

FIG. 12 shows a schematic diagram of a first index according to one embodiment of the application;

FIG. 13 shows a schematic diagram of an application scenario according to one embodiment of the application;

fig. 14 shows a block diagram of a processing arrangement in a first node device according to an embodiment of the application;

fig. 15 shows a block diagram of the processing means in the second node device according to an embodiment of the application.

Detailed Description

The technical scheme of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be arbitrarily combined with each other.

Example 1

Embodiment 1 illustrates a process flow diagram of a first node, as shown in fig. 1. In 100 shown in fig. 1, each block represents a step. In embodiment 1, a first node in the present application receives first signaling in step 101, the first signaling being used to indicate a first index; the PDCCH candidates are detected in a first resource set pool in step 102.

In embodiment 1, the first index is associated to a first reference signal resource, the first resource set pool comprises a first CORESET and a second CORESET, the first CORESET and the second CORESET comprising a first PDCCH candidate and a second PDCCH candidate, respectively; the first PDCCH candidate is connected to the second PDCCH candidate; demodulation reference signals and first candidate reference signal resources included in PDCCH transmitted in the first PDCCH candidate are QCL, and demodulation reference signals and second candidate reference signal resources included in PDCCH transmitted in the second PDCCH candidate are QCL; the first candidate reference signal resource and the second candidate reference signal resource are different; whether the first reference signal resource is used to determine one of the first candidate reference signal resource or the second candidate reference signal resource is related to whether the first index is associated with a second reference signal resource.

As an embodiment, the first signaling is a DCI.

As an embodiment, the physical layer channel occupied by the first signaling includes a PDCCH.

As an embodiment, the first signaling is a Downlink Grant (Downlink Grant).

As an embodiment, the first signaling is an Uplink Grant (Uplink Grant).

As an embodiment, the first index is used to indicate the first reference signal resource.

As an embodiment, the first index is used to indicate the first reference signal resource and the second reference signal resource simultaneously.

As an embodiment, the first index corresponds to a TCI field in one DCI.

As an embodiment, the first index corresponds to an SRI (Sounding Reference Signal Resource Indicator ) field in one DCI.

For one embodiment, the first index is associated with a QCL-Info.

As an embodiment, the first index is associated to two QCL-Info.

As one embodiment, the first index is associated with a DLorJoint-TCIState-Id.

As one example, the first index is associated with a UL-TCIState-Id.

As an embodiment, the first pool of resource sets occupies a positive integer number of REs (Resource Elements, resource units) greater than 1.

As an embodiment, the first set of resource pools includes a first CORESET pool and a second CORESET pool.

As a sub-embodiment of this embodiment, the first CORESET pool comprises K1 CORESETs, the K1 being a positive integer, the first CORESET being one of the K1 CORESETs.

As a sub-embodiment of this embodiment, the second CORESET pool comprises K2 CORESETs, the K2 being a positive integer, the second CORESET being one of the K2 CORESETs.

As an embodiment, the first CORESET and the second CORESET are associated.

As one embodiment, the first and second CORESETs are associated to first and second sets of search spaces, respectively, the first and second sets of search spaces being associated.

As a sub-embodiment of this embodiment, the first set of search spaces and the second set of search spaces employ the same SearchSpaceLinkingId.

As an embodiment, the first PDCCH candidate and the second PDCCH candidate are used for joint PDCCH detection.

As an embodiment, the first PDCCH candidate and the second PDCCH candidate occupy a total of at most 3 PDCCH detections.

As an embodiment, the first PDCCH candidate and the second PDCCH candidate occupy the same number of CCEs (Control Channel Elements ).

As an embodiment, the same DCI is transmitted in the first PDCCH candidate and the second PDCCH candidate.

As an embodiment, the first PDCCH candidate and the second PDCCH candidate employ the same AL (Aggregation Level ).

As an embodiment, the first candidate reference signal resource comprises at least one of CSI-RS (Channel State Information Reference Signal ) resource or SSB (Synchronization Signal/physical broadcast channel Block, synchronization signal/physical broadcast channel block).

As one embodiment, the second candidate reference signal resource comprises at least one of a CSI-RS resource or an SSB.

As an embodiment, the first candidate reference signal resource corresponds to a TCI-State.

As an embodiment, the second candidate reference signal resource corresponds to a TCI-State.

As an embodiment, the first candidate reference signal resource corresponds to a TCI-StateID.

As an embodiment, the second candidate reference signal resource corresponds to a TCI-StateID.

As an embodiment, the first reference signal resource comprises at least one of a CSI-RS resource or an SSB.

As an embodiment, the second reference signal resource comprises at least one of a CSI-RS resource or an SSB.

As an embodiment, the first reference signal resource corresponds to a TCI-State.

As an embodiment, the second reference signal resource corresponds to a TCI-State.

As an embodiment, the first reference signal resource corresponds to a TCI-StateID.

As an embodiment, the second reference signal resource corresponds to a TCI-StateID.

As an embodiment, the first reference signal resource corresponds to one SRI.

As an embodiment, the first reference signal resource comprises an SRS resource.

As a sub-embodiment of this embodiment, the first reference signal resource is associated to one of the first candidate reference signal resource or the second candidate reference signal resource.

As an subsidiary embodiment of this sub-embodiment, said first reference signal resource is configured to be associated to said first candidate reference signal resource by RRC (Radio Resource Control ) signaling.

As an subsidiary embodiment of this sub-embodiment, said first reference signal resource is configured to be associated with said second candidate reference signal resource by RRC signaling.

As an subsidiary embodiment of this sub-embodiment, said first reference signal resource is configured to be associated to said first candidate reference signal resource and said second candidate reference signal resource by RRC signaling.

As an embodiment, the second reference signal resource corresponds to one SRI.

As an embodiment, the second reference signal resource comprises an SRS resource.

As a sub-embodiment of this embodiment, the second reference signal resource is associated to one of the first candidate reference signal resource or the second candidate reference signal resource.

As an subsidiary embodiment of this sub-embodiment, said second reference signal resource is configured to be associated to said first candidate reference signal resource by RRC signaling.

As an subsidiary embodiment of this sub-embodiment, said second reference signal resource is configured to be associated with said second candidate reference signal resource by RRC signaling.

As an subsidiary embodiment of this sub-embodiment, said second reference signal resource is configured to be associated to said first candidate reference signal resource and said second candidate reference signal resource by RRC signaling.

As an embodiment, the first candidate reference signal resource is used to determine a spatial reception parameter of a signal transmitted in the first PDCCH candidate.

As an embodiment, the second candidate reference signal resource is used to determine a spatial reception parameter of a signal transmitted in the second PDCCH candidate.

As one example, the Type of QCL in the present application includes QCL Type D.

As one example, the Type of QCL in the present application includes QCL Type a.

As one example, the Type of QCL in the present application includes QCL Type B.

As one example, the Type of QCL in the present application includes QCL Type C.

As an embodiment, the spatial reception parameters in the present application include QCL-Info.

As one example, the meaning that two signals are QCL includes: the large-scale characteristics of the channel experienced by one of the two signals may be inferred from the large-scale characteristics of the channel experienced by the other of the two signals.

As an embodiment, the meaning that the signal and reference signal resources are QCL includes: the large-scale characteristics of the channel experienced by the reference signal transmitted from the reference signal resource may be inferred from the large-scale characteristics of the channel experienced by the signal.

As an embodiment, the meaning that the two reference signal resources are QCLs includes: the large-scale characteristics of the channel experienced by a signal transmitted in one reference signal resource may be inferred from the large-scale characteristics of the channel experienced by a reference signal transmitted in another reference signal resource.

As one example, the large scale characteristics (large scale properties) include one or more of delay spread (delay spread), doppler spread (Doppler shift), doppler shift (Doppler shift), average delay (average delay), or spatial reception parameters (Spatial Rx parameter).

As an embodiment, the spatial reception parameters in the present application include analog beamforming vectors.

As an embodiment, the spatial reception parameters in the present application include digital beamforming vectors.

As an embodiment, the spatial reception parameters in the present application include spatial filtering parameters.

As an embodiment, the QCL in the present application means: quasi Co-Located.

As an embodiment, the QCL in the present application means: quasi Co-Location (Quasi Co-located).

As an embodiment, the QCL of the present application includes QCL parameters.

As an embodiment, the QCL in the present application includes QCL hypothesis (assumption).

As an embodiment, the QCL of the present application includes QCL-Info.

As one embodiment, the QCL of the present application includes a QCL relationship.

As an embodiment, the first PDCCH candidate is any one of a plurality of PDCCH candidates included in the first CORESET.

As an embodiment, the second PDCCH candidate is any one of a plurality of PDCCH candidates included in the second CORESET.

As an embodiment, the first PDCCH candidate is any one of a plurality of PDCCH candidates included in a search space set associated with the first CORESET.

As an embodiment, the second PDCCH candidate is any one of a plurality of PDCCH candidates included in a search space set associated with the second CORESET.

As an embodiment, the first candidate reference signal resource and the second candidate reference signal resource correspond to different TCI-states, respectively.

As an embodiment, the first candidate reference signal resource and the second candidate reference signal resource correspond to different TCI-stateids, respectively.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture, as shown in fig. 2.

Fig. 2 illustrates a diagram of a network architecture 200 of a 5g nr, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced, enhanced Long-Term Evolution) system. The 5G NR or LTE network architecture 200 may be referred to as EPS (Evolved Packet System ) 200 as some other suitable terminology. EPS 200 may include a UE (User Equipment) 201, ng-RAN (next generation radio access Network) 202, epc (Evolved Packet Core )/5G-CN (5G Core Network) 210, hss (Home Subscriber Server ) 220, and internet service 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, EPS provides packet-switched services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this disclosure may be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes NR node bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gNB203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP, or some other suitable terminology. The gNB203 provides the UE201 with an access point to the EPC/5G-CN 210. Examples of UE201 include a cellular telephone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a non-terrestrial base station communication, a satellite mobile communication, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, an drone, an aircraft, a narrowband internet of things device, a machine-type communication device, a land-based vehicle, an automobile, a wearable device, or any other similar functional device. Those of skill in the art may also refer to the UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the EPC/5G-CN 210 through an S1/NG interface. EPC/5G-CN 210 includes MME (Mobility Management Entity )/AMF (Authentication Management Field, authentication management domain)/UPF (User Plane Function ) 211, other MME/AMF/UPF214, S-GW (Service Gateway) 212, and P-GW (Packet Date Network Gateway, packet data network Gateway) 213. The MME/AMF/UPF211 is a control node that handles signaling between the UE201 and the EPC/5G-CN 210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet Protocal, internet protocol) packets are transported through the S-GW212, which S-GW212 itself is connected to P-GW213. The P-GW213 provides UE IP address assignment as well as other functions. The P-GW213 is connected to the internet service 230. Internet services 230 include operator-corresponding internet protocol services, which may include, in particular, the internet, intranets, IMS (IP Multimedia Subsystem ) and packet-switched streaming services.

As an embodiment, the UE201 corresponds to the first node in the present application.

As an embodiment, the UE201 can receive PDCCHs from a plurality of TRPs at the same time.

As an embodiment, the UE201 is a terminal with the capability to monitor multiple beams simultaneously.

As an embodiment, the UE201 is a Massive-MIMO enabled terminal.

As an embodiment, the UE201 is a V2X (Vehicle-to-evaluation) enabled terminal.

As an embodiment, the UE201 is a unified TCI-enabled UE

As an embodiment, the gNB203 corresponds to the second node in the present application.

As an embodiment, the gNB203 can simultaneously transmit PDCCHs originating from a plurality of TRPs.

As an embodiment, the gNB203 supports multi-beam transmission.

As an embodiment, the gNB203 supports Massive-MIMO based transmission.

As an embodiment, the gNB203 includes at least two TRPs.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture of a user plane and a control plane according to the application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, fig. 3 shows the radio protocol architecture for the control plane 300 between a first communication node device (UE, RSU in gNB or V2X) and a second communication node device (gNB, RSU in UE or V2X) in three layers: layer 1, layer 2 and layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY301. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first communication node device and the second communication node device through PHY301. The L2 layer 305 includes a MAC (Medium Access Control ) sublayer 302, an RLC (Radio Link Control, radio link layer control protocol) sublayer 303, and a PDCP (Packet Data Convergence Protocol ) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by ciphering the data packets, and the PDCP sublayer 304 also provides handoff support for the first communication node device to the second communication node device. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out of order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell among the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resouce Control, radio resource control) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second communication node device and the first communication node device. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer), the radio protocol architecture for the first communication node device and the second communication node device in the user plane 350 is substantially the same for the physical layer 351, PDCP sublayer 354 in the L2 layer 355, RLC sublayer 353 in the L2 layer 355 and MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. Also included in the L2 layer 355 in the user plane 350 is an SDAP (Service Data Adaptation Protocol ) sublayer 356, the SDAP sublayer 356 being responsible for mapping between QoS flows and data radio bearers (DRBs, data Radio Bearer) to support diversity of traffic. Although not shown, the first communication node apparatus may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., remote UE, server, etc.).

As an embodiment, the radio protocol architecture in fig. 3 is applicable to the first node in the present application.

As an embodiment, the radio protocol architecture in fig. 3 is applicable to the second node in the present application.

As an embodiment, PDCP304 of the second communication node device is used to generate a schedule for the first communication node device.

As one embodiment, PDCP354 of the second communication node device is used to generate a schedule for the first communication node device.

As an embodiment, the first signaling in the present application is generated in the PHY301 or the PHY351.

As an embodiment, the first signaling in the present application is generated in the MAC302 or the MAC352.

As an embodiment, the target PDCCH transmitted in the first resource set pool in the present application is generated in the PHY301 or 351.

As an embodiment, the second signaling in the present application is generated in the PHY301 or the PHY351.

As an embodiment, the second signaling in the present application is generated in the MAC302 or the MAC352.

As an embodiment, the first signal in the present application is generated in the MAC302 or the MAC352.

As an embodiment, the first signal in the present application is generated in the RRC306.

As an embodiment, the second signal in the present application is generated in the MAC302 or the MAC352.

As an embodiment, the second signal in the present application is generated in the RRC306.

As an embodiment, the first information block in the present application is generated in the MAC302 or the MAC352.

As an embodiment, the first information block in the present application is generated in the RRC306.

As an embodiment, the first information block in the present application is generated in the PHY301 or the PHY351.

As an embodiment, the PDCCH transmitted in the second resource set in the present application is generated in the MAC302 or the MAC352.

As an embodiment, the PDCCH transmitted in the second resource set in the present application is generated in the PHY301 or 351.

As an embodiment, the first node is a terminal.

As an embodiment, the second node is a terminal.

As an embodiment, the second node is an RSU (Road Side Unit).

As an embodiment, the second node is a Grouphead.

As an embodiment, the second node is a TRP (Transmitter Receiver Point, transmission reception point).

As an embodiment, the second node is a Cell.

As an embodiment, the second node is an eNB.

As an embodiment, the second node is a base station.

As one embodiment, the second node is used to manage a plurality of TRPs.

As an embodiment, the second node is a node for managing a plurality of cells.

Example 4

Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the application, as shown in fig. 4. Fig. 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

The first communication device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.

The second communication device 410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multi-antenna receive processor 472, a multi-antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

In the transmission from the second communication device 410 to the first communication device 450, upper layer data packets from the core network are provided to a controller/processor 475 at the second communication device 410. The controller/processor 475 implements the functionality of the L2 layer. In the transmission from the second communication device 410 to the first communication device 450, a controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., physical layer). Transmit processor 416 performs coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as mapping of signal clusters based on various modulation schemes, e.g., binary Phase Shift Keying (BPSK), quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM). The multi-antenna transmit processor 471 digitally space-precodes the coded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, to generate one or more spatial streams. A transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate a physical channel carrying the time domain multicarrier symbol stream. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multiple antenna transmit processor 471 to a radio frequency stream and then provides it to a different antenna 420.

In a transmission from the second communication device 410 to the first communication device 450, each receiver 454 receives a signal at the first communication device 450 through its respective antenna 452. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream that is provided to a receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various signal processing functions for the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. The receive processor 456 converts the baseband multicarrier symbol stream after receiving the analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receive processor 456, wherein the reference signal is to be used for channel estimation, and the data signal is subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals that were transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller/processor 459. The controller/processor 459 implements the functions of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In the transmission from the second communication device 410 to the second communication device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the core network. The upper layer packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In the transmission from the first communication device 450 to the second communication device 410, a data source 467 is used at the first communication device 450 to provide upper layer data packets to a controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit functions at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocations, implementing L2 layer functions for the user and control planes. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming, with the multi-antenna transmit processor 457 performing digital multi-antenna spatial precoding, after which the transmit processor 468 modulates the resulting spatial stream into a multi-carrier/single-carrier symbol stream, which is analog precoded/beamformed in the multi-antenna transmit processor 457 before being provided to the different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides it to an antenna 452.

In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the receiving function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals to baseband signals, and provides the baseband signals to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement the functions of the L1 layer. The controller/processor 475 implements L2 layer functions. The controller/processor 475 may be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, a controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the UE 450. Upper layer packets from the controller/processor 475 may be provided to the core network.

As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus of the first communication device 450 to at least: first receiving first signaling, the first signaling being used to indicate a first index; then detecting a PDCCH candidate in the first resource set pool; the first index is associated to a first reference signal resource, the first resource set pool includes a first CORESET and a second CORESET, the first CORESET and the second CORESET including a first PDCCH candidate and a second PDCCH candidate, respectively; the first PDCCH candidate is connected to the second PDCCH candidate; demodulation reference signals and first candidate reference signal resources included in PDCCH transmitted in the first PDCCH candidate are QCL, and demodulation reference signals and second candidate reference signal resources included in PDCCH transmitted in the second PDCCH candidate are QCL; the first candidate reference signal resource and the second candidate reference signal resource are different; whether the first reference signal resource is used to determine one of the first candidate reference signal resource or the second candidate reference signal resource is related to whether the first index is associated with a second reference signal resource.

As an embodiment, the first communication device 450 includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: first receiving first signaling, the first signaling being used to indicate a first index; then detecting a PDCCH candidate in the first resource set pool; the first index is associated to a first reference signal resource, the first resource set pool includes a first CORESET and a second CORESET, the first CORESET and the second CORESET including a first PDCCH candidate and a second PDCCH candidate, respectively; the first PDCCH candidate is connected to the second PDCCH candidate; demodulation reference signals and first candidate reference signal resources included in PDCCH transmitted in the first PDCCH candidate are QCL, and demodulation reference signals and second candidate reference signal resources included in PDCCH transmitted in the second PDCCH candidate are QCL; the first candidate reference signal resource and the second candidate reference signal resource are different; whether the first reference signal resource is used to determine one of the first candidate reference signal resource or the second candidate reference signal resource is related to whether the first index is associated with a second reference signal resource.

As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 410 means at least: first, first signaling is sent, wherein the first signaling is used for indicating a first index; then sending the target PDCCH in the first resource set pool; the target PDCCH occupies at least one PDCCH candidate in the first resource set pool; the first index is associated to a first reference signal resource, the first resource set pool includes a first CORESET and a second CORESET, the first CORESET and the second CORESET including a first PDCCH candidate and a second PDCCH candidate, respectively; the first PDCCH candidate is connected to the second PDCCH candidate; demodulation reference signals and first candidate reference signal resources included in PDCCH transmitted in the first PDCCH candidate are QCL, and demodulation reference signals and second candidate reference signal resources included in PDCCH transmitted in the second PDCCH candidate are QCL; the first candidate reference signal resource and the second candidate reference signal resource are different; whether the first reference signal resource is used to determine one of the first candidate reference signal resource or the second candidate reference signal resource is related to whether the first index is associated with a second reference signal resource.

As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: first, first signaling is sent, wherein the first signaling is used for indicating a first index; then sending the target PDCCH in the first resource set pool; the target PDCCH occupies at least one PDCCH candidate in the first resource set pool; the first index is associated to a first reference signal resource, the first resource set pool includes a first CORESET and a second CORESET, the first CORESET and the second CORESET including a first PDCCH candidate and a second PDCCH candidate, respectively; the first PDCCH candidate is connected to the second PDCCH candidate; demodulation reference signals and first candidate reference signal resources included in PDCCH transmitted in the first PDCCH candidate are QCL, and demodulation reference signals and second candidate reference signal resources included in PDCCH transmitted in the second PDCCH candidate are QCL; the first candidate reference signal resource and the second candidate reference signal resource are different; whether the first reference signal resource is used to determine one of the first candidate reference signal resource or the second candidate reference signal resource is related to whether the first index is associated with a second reference signal resource.

As an embodiment, the first communication device 450 corresponds to a first node in the present application.

As an embodiment, the second communication device 410 corresponds to a second node in the present application.

As an embodiment, the first communication device 450 is a UE.

As an embodiment, the first communication device 450 is a terminal.

As an embodiment, the second communication device 410 is a base station.

As an embodiment, the second communication device 410 is a UE.

As an embodiment, the second communication device 410 is a network device.

As an embodiment, the second communication device 410 is a serving cell.

As an embodiment, the second communication device 410 is a TRP.

As one embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least the first four of the controller/processors 459 are used to receive first signaling; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least the first four of the controller/processors 475 are used to transmit first signaling.

As one embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least the first four of the controller/processors 459 are used to detect PDCCH candidates in a first pool of resource sets; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least the first four of the controllers/processors 475 are used to transmit target PDCCHs in a first pool of resource sets.

As one embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least the first four of the controller/processors 459 are used to receive second signaling; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least the first four of the controller/processor 475 are used to transmit second signaling.

As one embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least the first four of the controller/processors 459 are used to receive a first signal; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least the first four of the controller/processors 475 are used to transmit a first signal.

As one implementation, the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, at least the first four of the controller/processor 459 are used to transmit a first signal; the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least the first four of the controller/processors 475 are used to receive a first signal.

As one embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least the first four of the controller/processor 459 are used to receive a second signal; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least the first four of the controller/processor 475 are used to transmit a second signal.

As one implementation, the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, at least the first four of the controller/processor 459 are used to transmit a second signal; the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least the first four of the controller/processors 475 are used to receive a second signal.

As one implementation, the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, at least the first four of the controller/processor 459 are used to transmit a first block of information in a first block of time-frequency resources; the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least the first four of the controllers/processors 475 are used to receive a first block of information in a first block of time-frequency resources.

As one embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least the first four of the controller/processors 459 are used to detect PDCCH candidates in a second set of resources; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least the first four of the controller/processors 475 are used to transmit PDCCHs in a second set of resources.

Example 5

Embodiment 5 illustrates a flow chart of a first signaling, as shown in fig. 5. In fig. 5, the first node U1 and the second node N2 communicate via a wireless link. It is specifically explained that the order in the present embodiment is not limited to the order of signal transmission and the order of implementation in the present application. The embodiment, sub-embodiment and subsidiary embodiment in embodiment 5 can be used in any of embodiments 6 to 11 without conflict; also, without conflict, the embodiments, sub-embodiments and sub-embodiments of any one of embodiments 6 to 11 can be used for embodiment 5.

For the followingFirst node U1Receiving a first signaling in step S10; transmitting a first information block in a first time-frequency resource block in step S11; the PDCCH candidates are detected in the first resource set pool in step S12.

For the followingSecond node N2Transmitting a first signaling in step S20; receiving a first information block in a first time-frequency resource block in step S21; the target PDCCH is transmitted in the first resource set pool in step S22.

In embodiment 5, the first signaling is used to indicate a first index; the target PDCCH occupies at least one PDCCH candidate in the first resource set pool; the first index is associated to a first reference signal resource, the first resource set pool includes a first CORESET and a second CORESET, the first CORESET and the second CORESET including a first PDCCH candidate and a second PDCCH candidate, respectively; the first PDCCH candidate is connected to the second PDCCH candidate; demodulation reference signals and first candidate reference signal resources included in PDCCH transmitted in the first PDCCH candidate are QCL, and demodulation reference signals and second candidate reference signal resources included in PDCCH transmitted in the second PDCCH candidate are QCL; the first candidate reference signal resource and the second candidate reference signal resource are different; whether the first reference signal resource is used to determine one of the first candidate reference signal resource or the second candidate reference signal resource, in relation to whether the first index is associated with a second reference signal resource; the first information block includes HARQ-ACKs for the first signaling or HARQ-ACKs for PDSCH transmissions scheduled by the first signaling; the first index in the first signaling is used to indicate a first TCI state set; when the first index in the first signaling is used to indicate a TCI state for at least one of a first CORESET pool and a second CORESET pool, the first set of TCI states is used to monitor the at least one CORESET in the first CORESET pool and the second CORESET pool from a first time, the first time-frequency resource block is used to determine the first time; the first resource collection pool includes the first CORESET pool including the first CORESET and the second CORESET pool including the second CORESET.

As an embodiment, the step S12 includes detecting the target PDCCH in at least one PDCCH candidate included in the first resource set pool.

As an embodiment, the first index is a non-negative integer.

Typically, the first index is associated to a second reference signal resource, and the first reference signal resource and the second reference signal resource are used to determine the first candidate reference signal resource and the second candidate reference signal resource, respectively; or the first index is not associated to the second reference signal resource, the first reference signal resource is not used to determine at least the latter of the first candidate reference signal resource or the second candidate reference signal resource.

As an embodiment, the first index is associated to the first and second reference signal resources simultaneously, which are used for determining the first and second candidate reference signal resources, respectively.

As a sub-embodiment of this embodiment, the first reference signal resource is associated to a TCI-State, and the TCI-State associated with the first reference signal resource is used to indicate the TCI-State associated with the first candidate reference signal resource.

As a sub-embodiment of this embodiment, the second reference signal resource is associated to a TCI-State, and the TCI-State associated with the second reference signal resource is used to indicate the TCI-State associated with the second candidate reference signal resource.

As a sub-embodiment of this embodiment, the first reference signal resource is associated to one SRI, and the TCI-State associated with the SRI with which the first reference signal resource is associated is used to indicate the TCI-State associated with the first candidate reference signal resource.

As a sub-embodiment of this embodiment, the second reference signal resource is associated to one SRI, and the TCI-State associated with the SRI with which the second reference signal resource is associated is used to indicate the TCI-State associated with the second candidate reference signal resource.

As an embodiment, the first index is not associated to the second reference signal resource, the first reference signal resource is not used to determine either of the first candidate reference signal resource or the second candidate reference signal resource.

As an embodiment, the first reference signal resource is used only for determining the first candidate reference signal resource of the first candidate reference signal resource and the second candidate reference signal resource.

As an embodiment, the first resource set pool includes a first CORESET pool and a second CORESET pool.

As an embodiment, the first reference signal resource and the first candidate reference signal resource belong to a first type of reference signal resource set, and the first type of reference signal resource set includes a plurality of reference signal resources.

As a sub-embodiment of this embodiment, the first type of reference signal resource set is associated to the first CORESET pool.

As a sub-embodiment of this embodiment, the second reference signal resource is a reference signal resource other than the plurality of reference signal resources comprised by the first type of reference signal resource set.

As one embodiment, the first index is one of L1 candidate indexes, and the L1 candidate indexes at least include a first candidate index and a second candidate index.

As a sub-embodiment of this embodiment, the first candidate index is associated with a TCI-State.

As an adjunct embodiment to this sub-embodiment, the TCI-State associated with the first candidate index is associated with the first CORESET pool.

As an adjunct embodiment to this sub-embodiment, the TCI-State associated with the first candidate index is associated with the second CORESET pool.

As a sub-embodiment of this embodiment, the second candidate index is associated to two TCI-states.

As an subsidiary embodiment of this sub-embodiment, the two TCI-states associated with the first candidate index are associated to the first CORESET pool and the second CORESET pool, respectively.

Typically, whether DCI occupying the first PDCCH candidate and DCI occupying the second PDCCH candidate are used to schedule the same channel or signal is related to whether the first index is associated with the second reference signal resource.

As an embodiment, the first index is associated to the first reference signal resource only, and the DCI occupying the first PDCCH candidate and the DCI occupying the second PDCCH candidate are not used to schedule the same channel or signal.

As a sub-embodiment of this embodiment, when the first index is associated only to the first reference signal resource, the first signaling is used to disconnect the set of search spaces associated with the first CORESET from the set of search spaces associated with the second CORESET.

As an embodiment, the first index is associated to the first reference signal resource and the second reference signal resource, and the DCI occupying the first PDCCH candidate and the DCI occupying the second PDCCH candidate are used to schedule the same channel or signal.

As an embodiment, the first index is associated to the first reference signal resource only, and the first node relinquishes detection in the second PDCCH candidate.

As an embodiment, the above "not used for scheduling the same channel" means: the DCI occupying the first PDCCH candidate and the DCI occupying the second PDCCH candidate are not used to indicate the same set of time-frequency resources.

As an embodiment, the above "not used for scheduling the same channel" means: the DCI occupying the first PDCCH candidate and the DCI occupying the second PDCCH candidate are not used to indicate the same PDSCH.

As an embodiment, the above "not used for scheduling the same channel" means: the DCI occupying the first PDCCH candidate and the DCI occupying the second PDCCH candidate are not used to indicate the same PUSCH.

As an embodiment, the above "not used for scheduling the same channel" means: the DCI occupying the first PDCCH candidate and the DCI occupying the second PDCCH candidate are not used to indicate data occupying the same HARQ process number.

Example 6

Embodiment 6 illustrates a flow chart of a second signaling, as shown in fig. 6. In fig. 6, the first node U3 and the second node N4 communicate via a wireless link. It is specifically explained that the order in the present embodiment is not limited to the order of signal transmission and the order of implementation in the present application. The embodiment, sub-embodiment and subsidiary embodiment in embodiment 6 can be used in any of embodiments 5 to 11 without conflict; also, without conflict, the embodiments, sub-embodiments and sub-embodiments of any one of embodiments 5 to 11 can be used for embodiment 6.

For the followingFirst node U3In step S30, a second signaling is received.

For the followingSecond node N4The second signaling is sent in step S40.

In embodiment 6, the second signaling is used to indicate a second index; the second signaling is earlier than the first signaling, the second index being associated to third and fourth reference signal resources, the third and fourth reference signal resources being used to determine the first and second candidate reference signal resources, respectively.

As an embodiment, the second signaling is a DCI.

As an embodiment, the physical layer channel occupied by the second signaling includes PDCCH.

As an embodiment, the second signaling is a downlink grant.

As an embodiment, the second signaling is an uplink grant.

As an embodiment, the second index is used to indicate the first reference signal resource.

As an embodiment, the second index is used to indicate both the first reference signal resource and the second reference signal resource.

As an embodiment, the second index corresponds to a TCI field in one DCI.

As an embodiment, the second index corresponds to an SRI field in one DCI.

For one embodiment, the second index is associated with two QCL-Info.

As one embodiment, the second index is associated to two TCI-states.

As one embodiment, the second index is associated with a DLorJoint-TCIState-Id.

As one example, the second index is associated with a UL-TCIState-Id.

As an embodiment, the third reference signal resource comprises at least one of a CSI-RS resource or an SSB.

As an embodiment, the fourth reference signal resource comprises at least one of a CSI-RS resource or an SSB.

As an embodiment, the third reference signal resource corresponds to a TCI-State.

As an embodiment, the fourth reference signal resource corresponds to a TCI-State.

As an embodiment, the third reference signal resource corresponds to a TCI-StateID.

As an embodiment, the fourth reference signal resource corresponds to a TCI-StateID.

As an embodiment, the third reference signal resource corresponds to one SRI.

As an embodiment, the third reference signal resource comprises an SRS resource.

As an embodiment, the fourth reference signal resource corresponds to one SRI.

As an embodiment, the fourth reference signal resource comprises an SRS resource.

As an embodiment, the third reference signal resource is associated to a TCI-State, and the TCI-State associated with the third reference signal resource is used to indicate the TCI-State associated with the first candidate reference signal resource.

As an embodiment, the fourth reference signal resource is associated to one TCI-State, and the TCI-State associated with the fourth reference signal resource is used to indicate the TCI-State associated with the first candidate reference signal resource.

As an embodiment, the third reference signal resource is associated to one SRI, and the TCI-State associated with the SRI associated with the third reference signal resource is used to indicate the TCI-State associated with the first candidate reference signal resource.

As an embodiment, the fourth reference signal resource is associated to one SRI, and the TCI-State associated with the SRI associated with the fourth reference signal resource is used to indicate the TCI-State associated with the second candidate reference signal resource.

As an embodiment, the time domain resources occupied by the second signaling are earlier than the time domain resources occupied by the first signaling.

As an embodiment, the second signaling is received earlier than the first signaling.

As an embodiment, the second signaling is sent earlier than the first signaling.

As an example, the step S30 is located before the step S10 in example 5.

As an example, the step S40 is located before the step S20 in example 5.

Example 7

Embodiment 7 illustrates a flow chart of a first signal, as shown in fig. 7. In fig. 7, the first node U5 and the second node N6 communicate via a wireless link. It is specifically explained that the order in the present embodiment is not limited to the order of signal transmission and the order of implementation in the present application. The embodiment, sub-embodiment and subsidiary embodiment in embodiment 7 can be used in any of embodiments 5 to 11 without conflict; also, without conflict, the embodiments, sub-embodiments and sub-embodiments of any one of embodiments 5 to 11 can be used for embodiment 7.

For the followingFirst node U5The first signal is received in step S50.

For the followingSecond node N6The first signal is transmitted in step S60.

In embodiment 7, the first index is associated with only the first reference signal resource, the first node detects a first DCI in the first resource set pool, the first DCI occupying the first PDCCH candidate and the second PDCCH candidate, the first DCI being used to indicate the first signal, the demodulation reference signal occupied by the first signal being QCL with the first reference signal resource.

As an embodiment, the first DCI is a downlink grant.

As an embodiment, the first DCI is used to indicate time domain resources occupied by the first signal.

As an embodiment, the first DCI is used to indicate frequency domain resources occupied by the first signal.

As an embodiment, the first DCI is used to indicate a HARQ (Hybrid Automatic Repeat reQuestt, hybrid automatic repeat request) process number occupied by the first signal.

As one embodiment, the first DCI is used to indicate an MCS (Modulation and Coding Scheme ) employed by the first signal.

As an embodiment, the first DCI is not used to indicate spatial reception parameters employed by the first signal.

As a sub-embodiment of this embodiment, the first DCI includes a TCI field, and the TCI field included in the first DCI is not used to indicate spatial reception parameters used by the first signal.

As a sub-embodiment of this embodiment, the first reference signal resource is used to determine spatial reception parameters of the first signal, and the first reference signal resource is not used to determine spatial reception parameters of the first CORESET and the second CORESET.

As an embodiment, the physical layer channel occupied by the first signal includes PDSCH.

As an embodiment, the transport channel occupied by the first signal includes DL-SCH (Downlink Shared Channel ).

As an embodiment, the first signal is generated by a TB (Transport Block).

As an example, the step S50 is located after the step S12 in example 5.

As an example, the step S60 is located after the step S22 in example 5.

Example 8

Embodiment 8 illustrates another flow chart of the first signal, as shown in fig. 8. In fig. 8, the first node U7 communicates with the second node N8 via a wireless link. It is specifically explained that the order in the present embodiment is not limited to the order of signal transmission and the order of implementation in the present application. The embodiment, sub-embodiment and subsidiary embodiment in embodiment 8 can be used in any of embodiments 5 to 11 without conflict; likewise, without conflict, embodiments, sub-embodiments and sub-embodiments of any one of embodiments 5 to 11 can be used for embodiment 8.

For the followingFirst node U7 The first signal is transmitted in step S70.

For the followingSecond node N8The first signal is received in step S80.

As an embodiment, the first DCI is an uplink grant.

As an embodiment, the first DCI is used to indicate a HARQ process number occupied by the first signal.

As one embodiment, the first DCI is used to indicate an MCS employed by the first signal.

As an embodiment, the physical layer channel occupied by the first signal includes PUSCH.

As an embodiment, the transport channel occupied by the first signal includes UL-SCH (Uplink Shared Channel, downlink shared channel).

As an embodiment, the first signal is generated by one TB.

As an example, the step S70 is located after the step S12 in example 5.

As an example, the step S80 is located after the step S22 in example 5.

Example 9

Embodiment 9 illustrates a flow chart of a second signal, as shown in fig. 9. In fig. 9, the first node U9 and the second node N10 communicate via a wireless link. It is specifically explained that the order in the present embodiment is not limited to the order of signal transmission and the order of implementation in the present application. The embodiment, sub-embodiment and subsidiary embodiment in embodiment 9 can be used in any of embodiments 5 to 11 without conflict; also, without conflict, the embodiments, sub-embodiments and sub-embodiments of any one of embodiments 5 to 11 can be used for embodiment 9.

For the followingFirst node U9The second signal is received in step S90.

For the followingSecond node N10The second signal is transmitted in step S100.

In embodiment 9, the first index is associated to the first reference signal resource and the second reference signal resource, the first node detects a second DCI in the first resource set pool, the second DCI occupying the first PDCCH candidate and the second PDCCH candidate, the second DCI being used to indicate the second signal, the second signal including a first sub-signal and a second sub-signal, the demodulation reference signal occupied by the first sub-signal being QCL with the first reference signal resource, and the demodulation reference signal occupied by the second sub-signal being QCL with the second reference signal resource.

As an embodiment, the second DCI is a downlink grant.

As an embodiment, the second DCI is used to indicate time domain resources occupied by the second signal.

As an embodiment, the second DCI is used to indicate frequency domain resources occupied by the second signal.

As an embodiment, the second DCI is used to indicate a HARQ process number occupied by the second signal.

As an embodiment, the second DCI is used to indicate an MCS employed by the second signal.

As an embodiment, the second DCI is not used to indicate spatial reception parameters employed by the second signal.

As a sub-embodiment of this embodiment, the second DCI includes a TCI field, and the TCI field included in the second DCI is not used to indicate spatial reception parameters used by the second signal.

As an embodiment, the first reference signal resource is used for determining spatial reception parameters of the first sub-signal and the second reference signal resource is used for determining spatial reception parameters of the second sub-signal.

As an embodiment, the first sub-signal and the signal transmitted in the first CORESET are QCL.

As an embodiment, the second sub-signal and the signal transmitted in the second CORESET are QCL.

As an embodiment, the physical layer channel occupied by the first sub-signal includes PDSCH.

As an embodiment, the transport channel occupied by the first sub-signal comprises a DL-SCH.

As an embodiment, the first sub-signal is generated by one TB.

As an embodiment, the physical layer channel occupied by the second sub-signal includes PDSCH.

As an embodiment, the transport channel occupied by the second sub-signal comprises DL-SCH.

As an embodiment, the second sub-signal is generated by one TB.

As an embodiment, the first sub-signal and the second sub-signal are generated by the same TB.

As an embodiment, the first sub-signal and the second sub-signal are generated by two different TBs.

As an embodiment, the first sub-signal and the second sub-signal occupy the same time-frequency resource.

As an example, the step S90 is located after the step S12 in example 5.

As an example, the step S100 is located after the step S22 in example 5.

Example 10

Embodiment 10 illustrates a flowchart of another second signal, as shown in fig. 10. In fig. 10, the first node U110 and the second node N120 communicate via a wireless link. It is specifically explained that the order in the present embodiment is not limited to the order of signal transmission and the order of implementation in the present application. Without conflict, the embodiments, sub-embodiments and subsidiary embodiments of embodiment 10 can be used with any of embodiments 5 to 11; likewise, without conflict, embodiments, sub-embodiments and sub-embodiments of any one of embodiments 5 to 11 can be used for embodiment 10.

For the followingFirst node U11The second signal is transmitted in step S110.

For the followingSecond node N12The second signal is received in step S120.

In embodiment 10, the first index is associated to the first reference signal resource and the second reference signal resource, the first node detects a second DCI in the first resource set pool, the second DCI occupying the first PDCCH candidate and the second PDCCH candidate, the second DCI being used to indicate the second signal, the second signal including a first sub-signal and a second sub-signal, the demodulation reference signal occupied by the first sub-signal being QCL with the first reference signal resource, and the demodulation reference signal occupied by the second sub-signal being QCL with the second reference signal resource.

As an embodiment, the second DCI is an uplink grant.

As an embodiment, the physical layer channel occupied by the first sub-signal includes PUSCH.

As an embodiment, the transport channel occupied by the first sub-signal comprises UL-SCH.

As an embodiment, the first sub-signal is generated by one TB.

As an embodiment, the physical layer channel occupied by the second sub-signal includes PUSCH.

As an embodiment, the transport channel occupied by the second sub-signal comprises UL-SCH.

As an embodiment, the second sub-signal is generated by one TB.

As an example, the step S110 is located after the step S12 in example 5.

As an example, the step S120 is located after the step S22 in example 5.

Example 11

Embodiment 11 illustrates a flowchart for detecting PDCCH candidates, as shown in fig. 11. In fig. 11, the first node U13 and the second node N14 communicate via a wireless link. It is specifically explained that the order in the present embodiment is not limited to the order of signal transmission and the order of implementation in the present application. Without conflict, embodiments, sub-embodiments and sub-embodiments of embodiment 11 can be used with any of embodiments 5 to 10; also, without conflict, the embodiments, sub-embodiments and sub-embodiments of any one of embodiments 5 to 10 can be used for embodiment 11.

For the followingFirst node U13The PDCCH candidates are detected in the second set of resources in step S130.

For the followingSecond node N14In step S140, the PDCCH is transmitted in the second set of resources.

In embodiment 6, the PDCCH occupies one PDCCH candidate in the second resource set; the first index is not associated to the second reference signal resource, the first reference signal resource being used to determine spatial reception parameters of PDCCH candidates included in the second set of resources; the PDCCH candidates included in the second resource set are not connected to any PDCCH candidate other than the second resource set.

As an embodiment, the second set of resources comprises CORESET.

As one embodiment, the second set of resources includes a set of search spaces.

As an embodiment, the demodulation reference signals of the PDCCH transmitted in the first and second resource sets are QCL.

As one embodiment, the second set of resources is a given set of search spaces that is unconnected to any other set of search spaces.

As one embodiment, the second set of resources is a given CORESET, the set of search spaces associated with the given CORESET being unconnected to any other set of search spaces.

As an embodiment, the second set of resources belongs to the first CORESET pool.

As an embodiment, the second set of resources belongs to the second CORESET pool.

Example 12

Embodiment 12 illustrates a schematic diagram of a first index, as shown in fig. 12. In fig. 12, the first index is one of L1 candidate indexes in the graph, where the L1 candidate indexes include Q1 first-class indexes and Q2 second-class indexes; both Q1 and Q2 are positive integers, and the sum of Q1 and Q2 is equal to L1. Any one of the Q1 first-type indexes is associated with only one reference signal resource, and any one of the Q2 second-type indexes is associated with two reference signal resources.

As an embodiment, when the first index is one of the Q1 first type indexes, the first index is used only to indicate the first reference signal resource.

As one embodiment, when the first index is one of the Q2 second type indexes, the first index is used to indicate the first reference signal resource and the second reference signal resource.

As an example, L1 is equal to one of 2,4,8 or 16.

As an example, L1 is equal to 8.

As an example, L1 is equal to 16.

As an embodiment, the reference signal resource associated with any one of the Q1 first-type indexes includes at least one of CSI-RS resource or SSB.

As an embodiment, the reference signal resource associated with any one of the Q1 first-type indexes includes an SRS resource.

As an embodiment, the two reference signal resources associated with any of the Q2 second-type indexes respectively include at least one of CSI-RS resources or SSBs.

As an embodiment, the two reference signal resources associated with any one of the Q2 second-type indexes respectively include SRS resources.

Example 13

Embodiment 13 illustrates a schematic diagram of an application scenario, as shown in fig. 13. In fig. 13, a first CORESET pool and the second CORESET pool are respectively configured to a first TRP and a second TRP of a first cell, and the first node receives PDCCHs from both TRPs at the same time; the first reference signal resource is associated to the first CORESET pool and the second reference signal resource is associated to the second CORESET pool.

As one embodiment, the first TRP and the second TRP respectively employ two different CORESET Pool Index.

As one embodiment, the first TRP and the second TRP are connected by an X2 interface.

As one embodiment, a wired connection exists between the first TRP and the second TRP.

Example 14

Embodiment 14 illustrates a block diagram of the structure in a first node, as shown in fig. 14. In fig. 14, a first node 1400 includes a first receiver 1401 and a first transceiver 1402.

A first receiver 1401 that receives first signaling, the first signaling being used to indicate a first index;

a first transceiver 1402 detecting PDCCH candidates in a first resource set pool;

in embodiment 14, the first index is associated with a first reference signal resource, the first resource set pool includes a first CORESET and a second CORESET, the first CORESET and the second CORESET including a first PDCCH candidate and a second PDCCH candidate, respectively; the first PDCCH candidate is connected to the second PDCCH candidate; demodulation reference signals and first candidate reference signal resources included in PDCCH transmitted in the first PDCCH candidate are QCL, and demodulation reference signals and second candidate reference signal resources included in PDCCH transmitted in the second PDCCH candidate are QCL; the first candidate reference signal resource and the second candidate reference signal resource are different; whether the first reference signal resource is used to determine one of the first candidate reference signal resource or the second candidate reference signal resource is related to whether the first index is associated with a second reference signal resource.

As one embodiment, the first index is associated to a second reference signal resource, and the first and second reference signal resources are used to determine the first and second candidate reference signal resources, respectively; or the first index is not associated to the second reference signal resource, the first reference signal resource is not used to determine at least the latter of the first candidate reference signal resource or the second candidate reference signal resource.

For one embodiment, the first receiver 1401 receives second signaling, the second signaling being used to indicate a second index; the second signaling is earlier than the first signaling, the second index being associated to third and fourth reference signal resources, the third and fourth reference signal resources being used to determine the first and second candidate reference signal resources, respectively.

As an embodiment, whether DCI occupying the first PDCCH candidate and DCI occupying the second PDCCH candidate are used to schedule the same channel or signal relates to whether the first index is associated to the second reference signal resource.

As one embodiment, the first transceiver 1402 receives a first signal; the first index is associated only to the first reference signal resource, the first node detects a first DCI in the first resource set pool, the first DCI occupying the first PDCCH candidate and the second PDCCH candidate, the first DCI being used to indicate the first signal, a demodulation reference signal occupied by the first signal being QCL with the first reference signal resource.

As an embodiment, the first transceiver 1402 sends a first signal; the first index is associated only to the first reference signal resource, the first node detects a first DCI in the first resource set pool, the first DCI occupying the first PDCCH candidate and the second PDCCH candidate, the first DCI being used to indicate the first signal, a demodulation reference signal occupied by the first signal being QCL with the first reference signal resource.

As one embodiment, the first transceiver 1402 receives a second signal; the first index is associated to the first reference signal resource and the second reference signal resource, the first node detects a second DCI in the first resource set pool, the second DCI occupying the first PDCCH candidate and the second PDCCH candidate, the second DCI being used to indicate the second signal, the second signal including a first sub-signal and a second sub-signal, the demodulation reference signal occupied by the first sub-signal being QCL with the first reference signal resource, and the demodulation reference signal occupied by the second sub-signal being QCL with the second reference signal resource.

As one embodiment, the first transceiver 1402 transmits a second signal; the first index is associated to the first reference signal resource and the second reference signal resource, the first node detects a second DCI in the first resource set pool, the second DCI occupying the first PDCCH candidate and the second PDCCH candidate, the second DCI being used to indicate the second signal, the second signal including a first sub-signal and a second sub-signal, the demodulation reference signal occupied by the first sub-signal being QCL with the first reference signal resource, and the demodulation reference signal occupied by the second sub-signal being QCL with the second reference signal resource.

As an embodiment, the first transceiver 1402 sends a first information block in a first time-frequency resource block; the first information block includes HARQ-ACKs for the first signaling or HARQ-ACKs for PDSCH transmissions scheduled by the first signaling; the first index in the first signaling is used to indicate a first TCI state set; when the first index in the first signaling is used to indicate a TCI state for at least one of a first CORESET pool and a second CORESET pool, the first set of TCI states is used to monitor the at least one CORESET in the first CORESET pool and the second CORESET pool from a first time, the first time-frequency resource block is used to determine the first time; the first resource collection pool includes the first CORESET pool including the first CORESET and the second CORESET pool including the second CORESET.

As one embodiment, the first transceiver 1402 detects PDCCH candidates in a second set of resources; the first index is not associated to the second reference signal resource, the first reference signal resource being used to determine spatial reception parameters of PDCCH candidates included in the second set of resources; the PDCCH candidates included in the second resource set are not connected to any PDCCH candidate other than the second resource set.

As an example, the first receiver 1401 includes at least the first 4 of the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456, and the controller/processor 459 in example 4.

As one example, the first transceiver 1402 includes at least the first 6 of the antenna 452, the receiver/transmitter 454, the multi-antenna receive processor 458, the multi-antenna transmit processor 457, the receive processor 456, the transmit processor 468, and the controller/processor 459 of example 4.

Example 15

Embodiment 15 illustrates a block diagram of the structure in a second node, as shown in fig. 15. In fig. 15, a second node 1500 includes a first transmitter 1501 and a second transceiver 1502.

A first transmitter 1501 transmitting first signaling, the first signaling being used to indicate a first index;

A second transceiver 1502 that transmits a target PDCCH in a first resource set pool;

in embodiment 15, the target PDCCH occupies at least one PDCCH candidate in the first resource set pool; the first index is associated to a first reference signal resource, the first resource set pool includes a first CORESET and a second CORESET, the first CORESET and the second CORESET including a first PDCCH candidate and a second PDCCH candidate, respectively; the first PDCCH candidate is connected to the second PDCCH candidate; demodulation reference signals and first candidate reference signal resources included in PDCCH transmitted in the first PDCCH candidate are QCL, and demodulation reference signals and second candidate reference signal resources included in PDCCH transmitted in the second PDCCH candidate are QCL; the first candidate reference signal resource and the second candidate reference signal resource are different; whether the first reference signal resource is used to determine one of the first candidate reference signal resource or the second candidate reference signal resource is related to whether the first index is associated with a second reference signal resource.

As an embodiment, the first transmitter 1501 sends second signaling, which is used to indicate a second index; the second signaling is earlier than the first signaling, the second index being associated to third and fourth reference signal resources, the third and fourth reference signal resources being used to determine the first and second candidate reference signal resources, respectively.

For one embodiment, the second transceiver 1502 transmits a first signal; the first index is associated only to the first reference signal resource, the first node detects a first DCI in the first resource set pool, the first DCI occupying the first PDCCH candidate and the second PDCCH candidate, the first DCI being used to indicate the first signal, a demodulation reference signal occupied by the first signal being QCL with the first reference signal resource.

For one embodiment, the second transceiver 1502 receives a first signal; the first index is associated only to the first reference signal resource, the first node detects a first DCI in the first resource set pool, the first DCI occupying the first PDCCH candidate and the second PDCCH candidate, the first DCI being used to indicate the first signal, a demodulation reference signal occupied by the first signal being QCL with the first reference signal resource.

For one embodiment, the second transceiver 1502 transmits a second signal; the first index is associated to the first reference signal resource and the second reference signal resource, the first node detects a second DCI in the first resource set pool, the second DCI occupying the first PDCCH candidate and the second PDCCH candidate, the second DCI being used to indicate the second signal, the second signal including a first sub-signal and a second sub-signal, the demodulation reference signal occupied by the first sub-signal being QCL with the first reference signal resource, and the demodulation reference signal occupied by the second sub-signal being QCL with the second reference signal resource.

For one embodiment, the second transceiver 1502 receives a second signal; the first index is associated to the first reference signal resource and the second reference signal resource, the first node detects a second DCI in the first resource set pool, the second DCI occupying the first PDCCH candidate and the second PDCCH candidate, the second DCI being used to indicate the second signal, the second signal including a first sub-signal and a second sub-signal, the demodulation reference signal occupied by the first sub-signal being QCL with the first reference signal resource, and the demodulation reference signal occupied by the second sub-signal being QCL with the second reference signal resource.

As an embodiment, the second transceiver 1502 receives a first information block in a first time-frequency resource block; the first information block includes HARQ-ACKs for the first signaling or HARQ-ACKs for PDSCH transmissions scheduled by the first signaling; the first index in the first signaling is used to indicate a first TCI state set; when the first index in the first signaling is used to indicate a TCI state for at least one of a first CORESET pool and a second CORESET pool, the first set of TCI states is used to monitor the at least one CORESET in the first CORESET pool and the second CORESET pool from a first time, the first time-frequency resource block is used to determine the first time; the first resource collection pool includes the first CORESET pool including the first CORESET and the second CORESET pool including the second CORESET.

As an embodiment, the second transceiver 1502 sends PDCCH in a second set of resources; the PDCCH occupies one PDCCH candidate in the second resource set; the first index is not associated to the second reference signal resource, the first reference signal resource being used to determine spatial reception parameters of PDCCH candidates included in the second set of resources; the PDCCH candidates included in the second resource set are not connected to any PDCCH candidate other than the second resource set.

As one example, the first transmitter 1501 includes at least the first 4 of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 of example 4.

As one example, the second transceiver 1502 includes at least the first 6 of the antenna 420, the transmitter/receiver 418, the multi-antenna transmit processor 471, the multi-antenna receive processor 472, the transmit processor 416, the receive processor 470, and the controller/processor 475 of example 4.

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described methods may be implemented by a program that instructs associated hardware, and the program may be stored on a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment may be implemented in a hardware form or may be implemented in a software functional module form, and the present application is not limited to any specific combination of software and hardware. The first node in the present application includes, but is not limited to, a mobile phone, a tablet computer, a notebook, an internet card, a low power device, an eMTC device, an NB-IoT device, a vehicle-mounted communication device, a vehicle, an RSU, an aircraft, an airplane, an unmanned plane, a remote control airplane, and other wireless communication devices. The second node in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a small cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission receiving node TRP, a GNSS, a relay satellite, a satellite base station, an air base station, an RSU, a drone, a test device, a transceiver device or a signaling tester for example, which simulates a function of a part of a base station, and the like.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A first node for use in wireless communications, comprising:

a first transceiver detecting PDCCH candidates in a first resource set pool;

2. The first node of claim 1, wherein the first index is associated to a second reference signal resource, and wherein the first reference signal resource and the second reference signal resource are used to determine the first candidate reference signal resource and the second candidate reference signal resource, respectively; or the first index is not associated to the second reference signal resource, the first reference signal resource is not used to determine at least the latter of the first candidate reference signal resource or the second candidate reference signal resource.

3. The first node according to claim 1 or 2, characterized by comprising:

the first receiver receiving second signaling, the second signaling being used to indicate a second index;

4. A first node according to any of claims 1-3, characterized in that whether DCI occupying the first PDCCH candidate and DCI occupying the second PDCCH candidate are used to schedule the same channel or signal is related to whether the first index is associated to the second reference signal resource.

5. The first node according to claim 3 or 4, characterized by comprising:

the first transceiver operating on a first signal;

wherein the first index is associated only to the first reference signal resource, the first node detects a first DCI in the first resource set pool, the first DCI occupying the first PDCCH candidate and the second PDCCH candidate, the first DCI being used to indicate the first signal, the demodulation reference signal occupied by the first signal being QCL with the first reference signal resource; the operation is a reception or the operation is a transmission.

6. The first node according to any of claims 1 to 4, characterized by comprising:

the first transceiver operating on a second signal;

wherein the first index is associated to the first reference signal resource and the second reference signal resource, the first node detects a second DCI in the first resource set pool, the second DCI occupying the first PDCCH candidate and the second PDCCH candidate, the second DCI being used to indicate the second signal, the second signal including a first sub-signal and a second sub-signal, the demodulation reference signal occupied by the first sub-signal being QCL with the first reference signal resource, the demodulation reference signal occupied by the second sub-signal being QCL with the second reference signal resource; the operation is a reception or the operation is a transmission.

7. The first node device according to any of claims 1 to 6, characterized by comprising:

the first transceiver transmits a first information block in a first time-frequency resource block;

8. The first node device according to any of claims 1 to 7, characterized by comprising:

The first transceiver detecting PDCCH candidates in a second set of resources;

9. A second node for use in wireless communications, comprising:

10. A method in a first node for use in wireless communications, comprising:

detecting a PDCCH candidate in a first resource set pool;

11. A method in a second node for use in wireless communications, comprising:

transmitting a target PDCCH in a first resource set pool;