CN115604845A

CN115604845A - Method and apparatus in a node used for wireless communication

Info

Publication number: CN115604845A
Application number: CN202110766059.1A
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: 2021-07-07
Filing date: 2021-07-07
Publication date: 2023-01-13

Abstract

A method and apparatus in a node used for wireless communication is disclosed. A node firstly receives a first signaling in a first time-frequency resource set, wherein the first signaling and a first reference signal resource are quasi co-located; subsequently receiving a MAC layer control unit, the MAC layer control unit indicating a second reference signal resource; and monitoring for a second signaling in at least the latter of the second set of time frequency resources and a third set of time frequency resources, the second signaling being quasi co-located with a third reference signal resource; the first set of time-frequency resources and the second set of time-frequency resources belong to a first cell, and the third set of time-frequency resources belong to a second cell; whether both the first cell and the second cell can be used to schedule a third cell is used to determine whether the third reference signal resource is equal to the second reference signal resource. The application improves the method and the device for updating the TCI state under the M-TRP to optimize the system performance.

Description

Method and apparatus in a node used for wireless communication

Technical Field

The present application relates to transmission methods and apparatus in wireless communication systems, and more particularly, to design schemes and apparatus for control channel transmission in wireless communication.

Background

In 5G NR (New Radio, new wireless), massive MIMO (Multi-Input Multi-Output) is one key technology. In massive MIMO, multiple antennas form a narrow beam pointing in a specific direction by Beamforming (Beamforming) to improve communication quality. In the 5G NR, the base station may update, through a MAC (Medium Access Control) CE (Control Elements), a TCI (Transmission Configuration Indication) used by the terminal to receive a PDCCH (Physical Downlink Control Channel) and a TCI used to receive a PDSCH (Physical Downlink Shared Channel), so as to ensure performance gain due to beamforming.

In The discussion of The NR R17 DSS (Dynamic spectrum sharing) topic, it has been agreed that an SCell (The SCell configured with CCS to PCell/PSCell, serving Cell configured as cross-carrier scheduling Primary Cell/Primary Secondary Cell) can schedule a PCell (Primary Cell) or a PSCell (Primary Secondary Cell). Meanwhile, on RAN1#105-e conference, it is agreed that the terminal can monitor a PDCCH for scheduling a PCell or PSCell in a Search Space (Search Space) located on the PCell or PSCell and a Search Space located on the scell.

Disclosure of Invention

The inventors have found through research that in the inter-cell scenario of M-TRP of R17, the TCI adopted by CORESET (Control Resource Set) in multiple carriers or BWPs is updated simultaneously to improve system performance. Meanwhile, when the terminal simultaneously monitors the search space on the PCell/PSCell and the search space on the scell, the terminal cannot monitor the PDCCH on two carriers with different beams at the same time due to the radio frequency capability of the terminal, and thus the above-described updating method of the TCI for the DSS scenario also needs to be redesigned.

In view of the above, the present application discloses a solution. It should be noted that, although the above description uses massive MIMO (multiple-Input multiple-Output) and beam-based communication scenarios as examples, the present application is also applicable to other scenarios such as LTE (Long-Term Evolution) Multi-antenna system, and achieves technical effects similar to those in massive MIMO and beam-based communication scenarios. Furthermore, the adoption of a unified solution 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. Without conflict, embodiments and features in embodiments in any node of the present application may apply to any other node, and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

In order to solve the above problems, the present application discloses a design method and apparatus for transmission of a control channel and a data channel in a Multi-TRP scenario. It should be noted that, without conflict, the embodiments and features in the embodiments in the user equipment of the present application may be applied to the base station, and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict. Further, although the present application is intended for cellular networks, the present application can also be used for internet of things and car networking. Further, while the present application was originally directed to DSS scenarios, the present application can also be used for non-DSS scenarios. Further, although the present application was originally directed to multi-antenna communication, the present application can also be applied to single-antenna communication. Further, although the original intention of the present application is directed to the terminal and base station scenario, the present application is also applicable to the terminal and terminal, the terminal and relay, the Non-Terrestrial network (NTN), and the communication scenario between the relay and the base station, and similar technical effects in the terminal and base station scenario are obtained. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to the communication scenario of the terminal and the base station) also helps to reduce hardware complexity and cost.

Further, without conflict, the embodiments and features of the embodiments in the first node device of the present application may be applied to the second node device, and vice versa. In particular, the terms (Terminology), noun, function, variable in the present application may be explained (if not specifically stated) with reference to the definitions in the 3GPP Specification protocols TS (Technical Specification) 36 series, TS38 series, TS37 series.

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

receiving a first signaling in a first time-frequency resource set, wherein a demodulation reference signal of a channel occupied by the first signaling and a first reference signal resource are quasi co-located;

receiving a MAC layer control unit, the MAC layer control unit being used to indicate a second reference signal resource;

monitoring a second signaling in at least a third time frequency resource set in a second time frequency resource set and a third time frequency resource set, wherein a demodulation reference signal and a third reference signal resource of a channel occupied by the second signaling are quasi co-located;

wherein the MAC layer control unit is configured to determine a first time, and a starting time of the second set of time-frequency resources is not earlier than the first time; the frequency domain resources occupied by the first time frequency resource set and the frequency domain resources occupied by the second time frequency resource set belong to a first cell, the frequency domain resources occupied by the third time frequency resource set belong to a second cell, and the first cell is different from the second cell; the first signaling and the second signaling are both physical layer signaling; the first set of time-frequency resources and the second set of time-frequency resources are both associated to a first control resource set identity, and the third set of time-frequency resources are both associated to a second control resource identity; the MAC layer control element includes only the former of the first control resource set identity and the second control resource identity; whether both the first cell and the second cell can be used to schedule a third cell is used to determine whether the third reference signal resource is equal to the second reference signal resource.

As an embodiment, one technical feature of the above method is that: when the first cell and the second cell can simultaneously schedule the third cell, the TCI update for CORESET in the first cell can be applied to the update of TCI of all CORESET in the second cell to improve the efficiency of TCI update; in contrast, when the first cell and the second cell are not able to simultaneously schedule the third cell, the TCI update for the CORESET in the first cell cannot be applied to the update of the TCI of all CORESETs in the second cell to guarantee independence of CORESETs on the respective carriers.

According to an aspect of the application, the third reference signal resource is equal to the second reference signal resource when both the first cell and the second cell can be used for scheduling the third cell; the third reference signal resource is independent of the second reference signal resource when the first cell or the second cell is used to schedule the third cell.

According to an aspect of the application, the first cell and the second cell are a first type cell and a second type cell, respectively, or the first cell and the second cell are the second type cell and the first type cell, respectively; the third cell is the first type cell.

According to one aspect of the application, comprising:

transmitting a target information block;

wherein the first set of time-frequency resources and the second set of time-frequency resources are associated to a first search space, the third set of time-frequency resources is associated to a second search space, and time-domain resources occupied by the first search space and time-domain resources occupied by the second search space overlap; the target information block indicates that the first node can simultaneously monitor a physical downlink control channel for scheduling the third cell in the first search space and the second search space.

As an embodiment, one technical feature of the above method is that: the above-described manner of implementing an update of the TCIs of all CORESET in the second Cell with TCI update of CORESET in the first Cell can be employed by the first node only if the first node has the capability to simultaneously monitor two search spaces on the P (S) Cell and scell that overlap in the time domain; whereas for conventional terminals, the TCI update of CORESET is still only for the CORESET indicated by the MAC CE.

According to an aspect of the application, the time domain resources occupied by the second set of time frequency resources and the time domain resources occupied by the third set of time frequency resources overlap.

According to one aspect of the application, comprising:

receiving a first information block and a second information block;

wherein the first information block is used to indicate the first set of control resources and the second information block is used to indicate the second set of control resources; the first set of control resources and the second set of control resources are different.

According to an aspect of the application, the first information block is used to indicate a first type of set of reference signal resources and a second type of set of reference signal resources; the MAC layer control element is configured to indicate the second reference signal resource from the first set of reference signal resources when both the first cell and the second cell can be used for scheduling the third cell; the MAC layer control element is configured to indicate the second reference signal resource from the second set of reference signal resources when the first cell or the second cell is used for scheduling the third cell.

As an embodiment, one technical feature of the above method is that: the first type of reference signal resource set is used when a plurality of CORESETs on a plurality of carriers are jointly updated, and the second type of reference signal resource set is used when one CORESET on a single carrier is updated; and further ensuring that the MACE layer control unit can update the TCI adopted by CORESET under various scenes.

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

sending a first signaling in a first time-frequency resource set, wherein a demodulation reference signal of a channel occupied by the first signaling and a first reference signal resource are quasi co-located;

a transmitting MAC layer control unit, the MAC layer control unit being used to indicate a second reference signal resource;

sending a second signaling at one of a second time frequency resource set and a third time frequency resource set, wherein a demodulation reference signal and a third reference signal resource of a channel occupied by the second signaling are quasi co-located;

According to one aspect of the application, comprising:

receiving a target information block;

According to one aspect of the application, comprising:

transmitting a first information block and a second information block;

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

a first transceiver, configured to receive a first signaling in a first set of time-frequency resources, where a demodulation reference signal of a channel occupied by the first signaling and a first reference signal resource are quasi co-located;

a first receiver receiving a MAC layer control unit, the MAC layer control unit being used to indicate a second reference signal resource;

the second receiver monitors a second signaling in at least a third time frequency resource set in the second time frequency resource set and the third time frequency resource set, and a demodulation reference signal and a third reference signal resource of a channel occupied by the second signaling are quasi co-located;

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

the second transceiver transmits a first signaling in a first time-frequency resource set, and a demodulation reference signal and a first reference signal resource of a channel occupied by the first signaling are quasi co-located;

a first transmitter to transmit a MAC layer control unit, the MAC layer control unit to be used to indicate a second reference signal resource;

a second transmitter, configured to send a second signaling in one of a second time-frequency resource set and a third time-frequency resource set, where a demodulation reference signal and a third reference signal resource of a channel occupied by the second signaling are quasi co-located;

wherein the MAC layer control unit is configured to determine a first time, and a starting time of the second set of time-frequency resources is not earlier than the first time; the frequency domain resources occupied by the first time frequency resource set and the frequency domain resources occupied by the second time frequency resource set belong to a first cell, the frequency domain resources occupied by the third time frequency resource set belong to a second cell, and the first cell is different from the second cell; the first signaling and the second signaling are both physical layer signaling; the first set of time-frequency resources and the second set of time-frequency resources are both associated to a first control resource set identity, and the third set of time-frequency resources are both associated to a second control resource identity; the MAC layer control unit includes only the former of the first control resource set identity and the second control resource identity; whether both the first cell and the second cell can be used to schedule a third cell is used to determine whether the third reference signal resource is equal to the second reference signal resource.

As an example, compared with the conventional scheme, the method has the following advantages:

when the first and second cells are able to simultaneously schedule the third cell, the TCI update for the CORESET in the first cell can be applied to the update of the TCI of all CORESETs in the second cell to improve the efficiency of TCI updates; in contrast, when the first cell and the second cell are not able to simultaneously schedule the third cell, the TCI update for CORESET in the first cell cannot be applied to the update of the TCI of all CORESETs in the second cell to ensure independence of CORESET on each carrier;

the above-described manner of implementing an update of the TCI of all CORESET in the second Cell with the TCI update of CORESET in the first Cell can only be employed by the first node when the first node has the capability of monitoring two search spaces on the P (S) Cell and the scell simultaneously, which overlap in the time domain; for the traditional terminal, the TCI update of CORESET is still only for CORESET indicated by MAC CE;

the first set of reference signal resources is used when used for multiple CORESET joint updates on multiple carriers, and the second set of reference signal resources is used when used for one CORESET update on a single carrier; and further ensuring that the MACE layer control unit can update the TCI adopted by CORESET in various scenes.

Drawings

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

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

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

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

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

fig. 5 shows a flow diagram of first signaling according to an embodiment of the application;

fig. 6 shows a schematic diagram of a first set of time-frequency resources and a second set of time-frequency resources according to an embodiment of the present application;

fig. 7 shows a schematic diagram of a second set of time-frequency resources and a third set of time-frequency resources according to an embodiment of the application;

fig. 8 shows a schematic diagram of a first cell and a second cell according to an embodiment of the application;

fig. 9 shows a schematic diagram of a given set of reference signal resources according to an embodiment of the present application;

FIG. 10 shows a block diagram of a processing arrangement in a first node device according to an embodiment of the present application;

fig. 11 shows a block diagram of a processing apparatus in a second node device according to an embodiment of the present application.

Detailed Description

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

Example 1

Embodiment 1 illustrates a processing 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 a first signaling in a first set of time-frequency resources in step 101, where a demodulation reference signal of a channel occupied by the first signaling and a first reference signal resource are quasi co-located; receiving a MAC layer control element in step 102, the MAC layer control element being used to indicate a second reference signal resource; in step 103, a second signaling is monitored in the second set of time frequency resources and at least a third set of time frequency resources in the third set of time frequency resources, and a demodulation reference signal and a third reference signal resource of a channel occupied by the second signaling are quasi co-located.

In embodiment 1, the MAC layer controlling unit is configured to determine a first time, where a starting time of the second set of time-frequency resources is not earlier than the first time; the frequency domain resources occupied by the first time frequency resource set and the frequency domain resources occupied by the second time frequency resource set belong to a first cell, the frequency domain resources occupied by the third time frequency resource set belong to a second cell, and the first cell is different from the second cell; the first signaling and the second signaling are both physical layer signaling; the first set of time-frequency resources and the second set of time-frequency resources are both associated to a first control resource set identity, and the third set of time-frequency resources are both associated to a second control resource identity; the MAC layer control element includes only the former of the first control resource set identity and the second control resource identity; whether both the first cell and the second cell can be used to schedule a third cell is used to determine whether the third reference signal resource is equal to the second reference signal resource.

As an embodiment, the first set of time and frequency resources occupies REs (Resource elements) that are greater than 1 and are positive integers.

As an embodiment, the time domain resource occupied by the first time frequency resource set is a time domain resource occupied by a CORESET.

As an embodiment, the time domain resource occupied by the first set of time and frequency resources is a time domain resource occupied by a CORESET.

As an embodiment, the time domain resource occupied by the first set of time frequency resources belongs to a time domain resource occupied by a search space.

As an embodiment, the second set of time-frequency resources occupies REs larger than a positive integer of 1.

As an embodiment, the time domain resource occupied by the second time frequency resource set is a time domain resource occupied by a CORESET.

As an embodiment, the time domain resource occupied by the second time-frequency resource set belongs to a time domain resource occupied by a search space.

As an embodiment, the first set of time-frequency resources and the second set of time-frequency resources belong to two different time slots in a time domain respectively.

As an embodiment, the third set of time-frequency resources occupies REs larger than a positive integer of 1.

As an embodiment, the time domain resource occupied by the third time frequency resource set is a time domain resource occupied by a CORESET.

As an embodiment, the time domain resource occupied by the third time-frequency resource set belongs to a time domain resource occupied by a search space.

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

As an embodiment, the first signaling is a DCI (Downlink control information).

For one embodiment, the first Reference signal resource includes a CSI-RS (Channel-State Information Reference Signals) resource.

As one embodiment, the first Reference Signal resource includes a DMRS (Demodulation Reference Signal) resource.

As an embodiment, the first Reference Signal resource includes an SRS (Sounding Reference Signal) resource.

For one embodiment, the first reference signal resource includes an SSB (SS/PBCH Block, synchronization signal/physical broadcast channel Block).

For one embodiment, the first reference signal resource corresponds to a TCI.

For one embodiment, the first reference signal resource corresponds to a TCI-State.

For one embodiment, the first reference signal resource corresponds to a TCI-StateId.

As an embodiment, the MAC layer control unit is TCI State Indication for UE-specific PDCCH MAC CE in TS 38.321.

For one embodiment, the second reference signal resource includes a CSI-RS resource.

As one embodiment, the second reference signal resource includes a DMRS resource.

In one embodiment, the second reference signal resource includes an SRS resource.

For one embodiment, the second reference signal resource includes an SSB.

For one embodiment, the second reference signal resource corresponds to a TCI.

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

For one embodiment, the second reference signal resource corresponds to a TCI-StateId.

As an embodiment, the MAC layer control unit is configured to indicate a ControlResourceSetId of the CORESET associated with the first set of time frequency resources.

As an embodiment, the MAC layer control unit does not include a ControlResourceSetId of the CORESET associated with the third set of time-frequency resources.

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

As an embodiment, the second signaling is a DCI.

As an embodiment, starting from the first time instant, the first node assumes that demodulation reference signals received on a PDCCH in a first set of control resources and the second reference signal resources are quasi co-located, the first set of control resources being a set of control resources associated with the first set of time-frequency resources.

As an embodiment, the first time is a starting time of a slot.

As an embodiment, the demodulation reference signal of the channel occupied by the first signaling and the first reference signal resource are Quasi Co-located and correspond to QCL (Quasi Co-located ) -type d.

As an embodiment, the demodulation reference signal and the third reference signal resource of the channel occupied by the second signaling correspond to quasi co-located QCL-type.

As an embodiment, the first cell is a serving cell.

As an embodiment, the second cell is a serving cell.

As an embodiment, the third cell is a serving cell.

As an embodiment, the first cell is a PSCell or a PCell and the second cell is an SsCell.

As an embodiment, the second cell is a PSCell or a PCell and the first cell is an SsCell.

As an embodiment, the third cell is a PSCell or a PCell.

As an example, the above phrase that the first cell and the second cell have different meanings includes: the first cell and the second cell occupy different frequency domain resources, respectively.

As an example, the above phrase that the first cell and the second cell have different meanings includes: the first cell and the second cell correspond to different SCellIndex respectively.

As an example, the above phrase that the first cell and the second cell have different meanings includes: the first cell and the second cell correspond to different SerlcelIndex respectively.

As an example, the above phrase that the first cell and the second cell have different meanings includes: the first Cell and the second Cell respectively correspond to different PCIs (Physical Cell identities).

As an example, the above phrase that the first cell and the second cell have different meanings includes: the first cell and the second cell correspond to different CIFs (Carrier Indicator fields), respectively.

For one embodiment, the third reference signal resource includes a CSI-RS resource.

As one embodiment, the third reference signal resource includes a DMRS resource.

In one embodiment, the third reference signal resource includes an SRS resource.

For one embodiment, the third reference signal resource comprises an SSB.

For one embodiment, the third reference signal resource corresponds to a TCI.

For one embodiment, the third reference signal resource corresponds to a TCI-State.

For one embodiment, the third reference signal resource corresponds to a TCI-StateId.

As one embodiment, the receiving first signaling in a first set of time-frequency resources comprises blind detecting the first signaling in the first set of time-frequency resources.

As one embodiment, said receiving first signaling in a first set of time-frequency resources comprises demodulating said first signaling in said first set of time-frequency resources.

As one embodiment, the receiving the first signaling in the first set of time-frequency resources includes acquiring the first signaling through coherent detection in the first set of time-frequency resources.

As an embodiment, the first node does not know the positions of the REs occupied by the first signaling in the first set of time-frequency resources before receiving the first signaling.

As one embodiment, the receiving second signaling in the second set of time frequency resources comprises blind detecting the second signaling in the second set of time frequency resources.

As an embodiment, the monitoring for second signaling in at least a third one of the second and third sets of time frequency resources comprises demodulating the second signaling in at least the third set of time frequency resources.

As an embodiment, the monitoring the second signaling in at least a third one of the second set of time frequency resources and the third set of time frequency resources includes obtaining the second signaling by coherent detection in at least the third set of time frequency resources.

As an embodiment, the first node does not know whether the second signaling is in the second set of time-frequency resources or the third set of time-frequency resources before receiving the second signaling.

As an embodiment, the first node does not know the positions of the REs occupied by the second signaling in the second set of time-frequency resources or the third set of time-frequency resources before receiving the second signaling.

As an embodiment, the QCL Type of the demodulation reference signal and the first reference signal resource of the channel occupied by the first signaling is QCL Type D.

As an embodiment, the QCL Type of the demodulation reference signal and the first reference signal resource of the channel occupied by the first signaling is QCL Type a.

As an embodiment, the QCL Type of the demodulation reference signal and the first reference signal resource of the channel occupied by the first signaling is QCL Type B.

As an embodiment, the QCL Type of the demodulation reference signal and the first reference signal resource of the channel occupied by the first signaling is QCL Type C.

As an embodiment, the QCL Type of the demodulation reference signal and the third reference signal resource of the channel occupied by the second signaling is QCL Type D.

As an embodiment, the QCL Type of the demodulation reference signal and the third reference signal resource of the channel occupied by the second signaling is QCL Type a.

As an embodiment, the QCL Type of the demodulation reference signal and the third reference signal resource of the channel occupied by the second signaling is QCL Type B.

As an embodiment, the QCL Type of the demodulation reference signal and the third reference signal resource of the channel occupied by the second signaling is QCL Type C.

As an embodiment, the physical layer channel occupied by the MAC layer control element includes a PDSCH.

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 for the 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems. The 5G NR or LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200 or some other suitable terminology. The EPS 200 may include a UE (User Equipment) 201, an nr-RAN (next generation radio access Network) 202, an epc (Evolved Packet Core)/5G-CN (5G-Core Network,5G Core Network) 210, an hss (Home Subscriber Server) 220, and an internet service 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the EPS provides packet-switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit-switched services or other cellular networks. The NR-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 gnbs 203 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 an access point for the UE201 to the EPC/5G-CN 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a drone, an aircraft, a narrowband internet of things device, a machine type communication device, a terrestrial vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to 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 via an S1/NG interface. The EPC/5G-CN 210 includes MME (Mobility Management Entity)/AMF (Authentication Management Domain)/UPF (User Plane Function) 211, other MMEs/AMF/UPF 214, S-GW (Service Gateway) 212, and P-GW (Packet data Network Gateway) 213.MME/AMF/UPF211 is a control node that handles signaling between UE201 and EPC/5G-CN 210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and 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. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a packet-switched streaming service.

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

As an embodiment, the UE201 can receive PDCCH from multiple TRPs simultaneously.

As an embodiment, the UE201 can receive CSI-RSs from multiple TRPs simultaneously.

As an embodiment, the UE201 can receive SSBs from multiple TRPs simultaneously.

As an embodiment, the UE201 is a terminal with the capability of monitoring multiple beams simultaneously.

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

As an embodiment, the UE201 supports simultaneous monitoring of multiple search spaces scheduling one carrier on two different carriers.

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

As an embodiment, the gNB203 can simultaneously transmit PDCCHs originating from multiple TRPs.

As an embodiment, a plurality of TRPs included in the gNB203 can simultaneously transmit CSI-RSs.

As an embodiment, a plurality of TRPs included in the gNB203 can simultaneously transmit SSBs.

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

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

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

As an embodiment, the at least two TRPs included in the gNB203 are connected by an Ideal Backhaul link (Ideal Backhaul).

As an embodiment, the gNB203 controls a plurality of cells to provide services for the terminal.

As an embodiment, the gNB203 supports sending PDCCH for scheduling one carrier in multiple search spaces on two different carriers.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture for the control plane 300 between a first communication node device (UE, RSU in gbb or V2X) and a second communication node device (gbb, 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 the PHY301 and is responsible for the link between the first communication node device and the second communication node device through the PHY301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) 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 data packets, and the PDCP sublayer 304 also provides handover support for a first communication node device to a second communication node device. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of 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 various radio resources (e.g., resource blocks) in one cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. A RRC (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 comprises layer 1 (L1 layer) and layer 2 (L2 layer), the radio protocol architecture in the user plane 350 for the first and second communication node devices is substantially the same for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355 and the 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 packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes a Service Data Adaptation Protocol (SDAP) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support Service diversity. Although not shown, the first communication node device 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., far end UE, server, etc.).

As an example, the wireless protocol architecture in fig. 3 is applicable to the first node in this application.

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

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

As an embodiment, the PDCP354 of the second communication node device is used for generating a schedule for the first communication node device.

For one embodiment, the first signaling is generated from the PHY301 or the PHY351.

For one embodiment, the first signaling is generated in the MAC302 or the MAC352.

As an embodiment, the MAC layer control element is generated in the MAC302 or the MAC352.

As an embodiment, the MAC layer control unit is generated in the PHY301 or the PHY351.

For one embodiment, the second signaling is generated from the PHY301 or the PHY351.

For one embodiment, the second signaling is generated in the MAC302 or the MAC352.

For one embodiment, the target information block is generated in the MAC302 or the MAC352.

As an embodiment, the target information block is generated at the RRC306.

For one embodiment, the first information block is generated in the MAC302 or the MAC352.

As an embodiment, the first information block is generated at the RRC306.

For one embodiment, the second information block is generated in the MAC302 or the MAC352.

As an embodiment, the second information block is generated in the RRC306.

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 a TRP (Transmitter Receiver Point).

As one embodiment, the second node is a Cell (Cell).

As an embodiment, the second node is an eNB.

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

As an 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.

As one embodiment, the second node is a node for managing a plurality of carriers.

Example 4

Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present 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 communications 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 multiple antenna receive processor 472, a multiple 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, at the second communication device 410, upper layer data packets from the core network are provided to the controller/processor 475. The controller/processor 475 implements the functionality of the L2 layer. In transmissions from the second communications device 410 to the first communications device 450, the controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communications 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., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as mapping of signal constellation 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 performs digital spatial precoding, including codebook-based precoding and non-codebook based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, 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 the physical channels carrying the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.

In a transmission from the second communications apparatus 410 to the first communications apparatus 450, each receiver 454 receives a signal through its respective antenna 452 at the first communications apparatus 450. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream provided to a receive processor 456. Receive processor 456 and multi-antenna receive processor 458 implement the various signal processing functions of 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. Receive processor 456 converts the received analog precoded/beamformed baseband multicarrier symbol stream from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered at 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 transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to a 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 transmissions from the second communications device 410 to the second communications device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the core network. The upper layer packet is then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In a transmission from the first communications device 450 to the second communications device 410, a data source 467 is used at the first communications 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 send function at the second communications apparatus 410 described in the transmission from the second communications apparatus 410 to the first communications apparatus 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to said second communications device 410. A transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding by a multi-antenna transmit processor 457 including codebook-based precoding and non-codebook based precoding, and beamforming, and the transmit processor 468 then modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to different antennas 452 via a transmitter 454 after analog precoding/beamforming in the multi-antenna transmit processor 457. 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 the radio frequency symbol stream to the antenna 452.

In a transmission from the first communication device 450 to the second communication device 410, the functionality at the second communication device 410 is similar to the receiving functionality 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 an rf signal through its respective antenna 420, converts the received rf signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functions of the L1 layer. The controller/processor 475 implements the L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In transmission from the first communications device 450 to the second communications device 410, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 450. Upper layer data packets from the controller/processor 475 may be provided to a 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 configured to, with the at least one processor, the first communication device 450 apparatus at least: firstly, receiving a first signaling in a first time-frequency resource set, wherein a demodulation reference signal of a channel occupied by the first signaling and a first reference signal resource are quasi co-located; secondly, receiving a MAC layer control unit, wherein the MAC layer control unit is used for indicating a second reference signal resource; monitoring a second signaling in the second time frequency resource set and at least a third time frequency resource set in the third time frequency resource set, wherein a demodulation reference signal and a third reference signal resource of a channel occupied by the second signaling are quasi co-located; the MAC layer control unit is used for determining a first time, and the starting time of the second time-frequency resource set is not earlier than the first time; the frequency domain resources occupied by the first time frequency resource set and the frequency domain resources occupied by the second time frequency resource set belong to a first cell, the frequency domain resources occupied by the third time frequency resource set belong to a second cell, and the first cell is different from the second cell; the first signaling and the second signaling are both physical layer signaling; the first set of time-frequency resources and the second set of time-frequency resources are both associated to a first control resource set identity, and the third set of time-frequency resources are both associated to a second control resource identity; the MAC layer control element includes only the former of the first control resource set identity and the second control resource identity; whether both the first cell and the second cell can be used to schedule a third cell is used to determine whether the third reference signal resource is equal to the 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 result in actions comprising: firstly, receiving a first signaling in a first time-frequency resource set, wherein a demodulation reference signal of a channel occupied by the first signaling and a first reference signal resource are quasi co-located; secondly, receiving a MAC layer control unit, wherein the MAC layer control unit is used for indicating a second reference signal resource; monitoring a second signaling in the second time frequency resource set and at least a third time frequency resource set in the third time frequency resource set, wherein a demodulation reference signal and a third reference signal resource of a channel occupied by the second signaling are quasi co-located; the MAC layer control unit is used for determining a first moment, and the starting moment of the second time-frequency resource set is not earlier than the first moment; the frequency domain resources occupied by the first time frequency resource set and the frequency domain resources occupied by the second time frequency resource set belong to a first cell, the frequency domain resources occupied by the third time frequency resource set belong to a second cell, and the first cell is different from the second cell; the first signaling and the second signaling are both physical layer signaling; the first set of time-frequency resources and the second set of time-frequency resources are both associated to a first control resource set identity, and the third set of time-frequency resources are both associated to a second control resource identity; the MAC layer control element includes only the former of the first control resource set identity and the second control resource identity; whether both the first cell and the second cell can be used to schedule a third cell is used to determine whether the third reference signal resource is equal to the 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: firstly, sending a first signaling in a first time-frequency resource set, wherein a demodulation reference signal of a channel occupied by the first signaling and a first reference signal resource are quasi co-located; secondly, sending an MAC layer control unit, wherein the MAC layer control unit is used for indicating a second reference signal resource; then, a second signaling is sent in one of a second time frequency resource set and a third time frequency resource set, and a demodulation reference signal and a third reference signal resource of a channel occupied by the second signaling are quasi co-located; the MAC layer control unit is used for determining a first time, and the starting time of the second time-frequency resource set is not earlier than the first time; the frequency domain resources occupied by the first time frequency resource set and the frequency domain resources occupied by the second time frequency resource set belong to a first cell, the frequency domain resources occupied by the third time frequency resource set belong to a second cell, and the first cell is different from the second cell; the first signaling and the second signaling are both physical layer signaling; the first set of time-frequency resources and the second set of time-frequency resources are both associated to a first control resource set identity, and the third set of time-frequency resources are both associated to a second control resource identity; the MAC layer control element includes only the former of the first control resource set identity and the second control resource identity; whether both the first cell and the second cell can be used to schedule a third cell is used to determine whether the third reference signal resource is equal to the 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 result in actions comprising: firstly, sending a first signaling in a first time-frequency resource set, wherein a demodulation reference signal of a channel occupied by the first signaling and a first reference signal resource are quasi co-located; secondly, sending an MAC layer control unit, wherein the MAC layer control unit is used for indicating a second reference signal resource; then, a second signaling is sent in one of a second time frequency resource set and a third time frequency resource set, and a demodulation reference signal and a third reference signal resource of a channel occupied by the second signaling are quasi co-located; the MAC layer control unit is used for determining a first time, and the starting time of the second time-frequency resource set is not earlier than the first time; the frequency domain resources occupied by the first time frequency resource set and the frequency domain resources occupied by the second time frequency resource set belong to a first cell, the frequency domain resources occupied by the third time frequency resource set belong to a second cell, and the first cell is different from the second cell; the first signaling and the second signaling are both physical layer signaling; the first set of time-frequency resources and the second set of time-frequency resources are both associated to a first control resource set identity, and the third set of time-frequency resources are both associated to a second control resource identity; the MAC layer control element includes only the former of the first control resource set identity and the second control resource identity; whether both the first cell and the second cell can be used to schedule a third cell is used to determine whether the third reference signal resource is equal to the 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.

For one embodiment, the first communication device 450 is a UE.

For one embodiment, the first communication device 450 is a terminal.

For one embodiment, the second communication device 410 is a base station.

For one embodiment, the second communication device 410 is a UE.

For one embodiment, the second communication device 410 is a network device.

For one embodiment, the second communication device 410 is a serving cell.

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

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 are configured to receive first signaling over a first set of time and frequency resources, wherein a demodulation reference signal of a channel occupied by the first signaling is quasi co-located with a first reference signal resource; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 are configured to send a first signaling in a first set of time-frequency resources, wherein demodulation reference signals of a channel occupied by the first signaling are quasi co-located with first reference signal resources.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to receive a MAC layer control element configured to indicate a second reference signal resource; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 are used to send MAC layer control elements that are used to indicate second reference signal resources.

As an embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to monitor a second signaling in a second set of time frequency resources and at least a third set of time frequency resources, where demodulation reference signals and third reference signal resources of a channel occupied by the second signaling are quasi co-located; 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 configured to send a second signaling on one of a second set of time-frequency resources and a third set of time-frequency resources, wherein demodulation reference signals and third reference signal resources of a channel occupied by the second signaling are quasi co-located.

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

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

Example 5

Embodiment 5 illustrates a flow chart of the first signaling, as shown in fig. 5. In fig. 5, a first node U1 and a second node N2 communicate with each other via a wireless link. It should be noted that the sequence in the present embodiment does not limit the signal transmission sequence and the implementation sequence in the present application.

For theFirst node U1Transmitting the target information block in step S10; receiving a first information block and a second information block in step S11; receiving a first signaling in a first set of time-frequency resources in step S12; receiving a MAC layer control unit in step S13; in step S14, second signaling is monitored in the second set of time frequency resources and at least a third set of time frequency resources of the third set of time frequency resources.

For theSecond node N2Receiving a target information block in step S20; transmitting the first information block and the second information block in step S21; transmitting first signaling in a first set of time-frequency resources in step S22; transmitting the MAC layer control unit in step S23; in step S24, second signaling is sent on one of the second set of time frequency resources and the third set of time frequency resources.

In embodiment 5, the demodulation reference signal and the first reference signal resource of the channel occupied by the first signaling are quasi co-located; the MAC layer control unit is used for indicating a second reference signal resource; the demodulation reference signal and the third reference signal resource of the channel occupied by the second signaling are quasi co-located; the MAC layer control unit is used for determining a first time, and the starting time of the second time-frequency resource set is not earlier than the first time; the frequency domain resources occupied by the first time frequency resource set and the frequency domain resources occupied by the second time frequency resource set belong to a first cell, the frequency domain resources occupied by the third time frequency resource set belong to a second cell, and the first cell is different from the second cell; the first signaling and the second signaling are both physical layer signaling; the first set of time-frequency resources and the second set of time-frequency resources are both associated to a first control resource set identity, and the third set of time-frequency resources are both associated to a second control resource identity; the MAC layer control unit includes only the former of the first control resource set identity and the second control resource identity; whether both the first cell and the second cell can be used to schedule a third cell to be used to determine whether the third reference signal resource is equal to the second reference signal resource; the first time frequency resource set and the second time frequency resource set are associated to a first search space, the third time frequency resource set is associated to a second search space, and time domain resources occupied by the first search space and time domain resources occupied by the second search space are overlapped; the target information block indicates that the first node can simultaneously monitor a physical downlink control channel for scheduling the third cell in the first search space and the second search space; the first information block is used to indicate the first set of control resources, the second information block is used to indicate the second set of control resources; the first set of control resources and the second set of control resources are different.

As an embodiment, when both the first cell and the second cell can be used for scheduling the third cell, the third reference signal resource is equal to the second reference signal resource; the third reference signal resource is independent of the second reference signal resource when the first cell or the second cell is used to schedule the third cell.

As a sub-embodiment of this embodiment, when both the first cell and the second cell can be used to schedule the third cell, the first node U1 monitors the second signaling in both the second set of time-frequency resources and the third set of time-frequency resources, and the third reference signal resource is equal to the second reference signal resource.

As an auxiliary embodiment of this sub-embodiment, the first node U1 monitors the second signaling by using the spatial receiving parameter corresponding to the second reference signal resource in both the second time-frequency resource set and the third time-frequency resource set.

As a sub-embodiment of this embodiment, when the first cell or the second cell is used for scheduling the third cell, the first node monitors the second signaling only in the second set of time-frequency resources and the third set of time-frequency resources of the third set of time-frequency resources, and the third reference signal resource is independent of the second reference signal resource.

As an auxiliary embodiment of this sub-embodiment, searchspace id of the search space associated with the second time-frequency resource set is greater than searchspace id of the search space associated with the third time-frequency resource set.

As an additional embodiment of this sub-embodiment, the ControlResourceSetId of the CORESET associated with the second time-frequency resource set is greater than the ControlResourceSetId of the CORESET associated with the third time-frequency resource set.

As an auxiliary embodiment of this sub-embodiment, the scelllindex corresponding to the first cell is greater than the scelllindex corresponding to the second cell.

As an auxiliary embodiment of this sub-embodiment, the ServcellIndex corresponding to the first cell is greater than the ServcellIndex corresponding to the second cell.

As a sub-embodiment of this embodiment, when the first cell or the second cell is used for scheduling the third cell, the first node U1 monitors the second signaling in both the second set of time-frequency resources and the third set of time-frequency resources; when the first node U1 monitors the second signaling in the second set of time-frequency resources, the third reference signal resource is quasi co-located with the second reference signal resource; the third reference signal resource is independent of the second reference signal resource when the first node U1 monitors the second signaling in the third set of time-frequency resources.

As an auxiliary embodiment of this sub-embodiment, when the first node U1 monitors the second signaling in the second time-frequency resource set, the first node U1 monitors the second signaling by using the spatial receiving parameter corresponding to the second reference signal resource.

As an auxiliary embodiment of this sub-embodiment, when the first node U1 monitors the second signaling in the third time-frequency resource set, the first node U1 monitors the second signaling by using a spatial receiving parameter corresponding to the third reference signal resource.

As an embodiment, the first cell and the second cell are a first type cell and a second type cell, respectively, or the first cell and the second cell are the second type cell and the first type cell, respectively; the third cell is the first type cell.

As a sub-embodiment of this embodiment, the first type of cell is a PCell or a PSCell, and the second type of cell is an SsCell.

As a sub-embodiment of this embodiment, the second type of cell is a cell capable of scheduling a PCell or a PSCell.

As an embodiment, the first set of time-frequency resources and the second set of time-frequency resources are associated to a first search space, the third set of time-frequency resources is associated to a second search space, and time-domain resources occupied by the first search space and time-domain resources occupied by the second search space overlap; the target information block indicates that the first node U1 can simultaneously monitor a physical downlink control channel for scheduling the third cell in the first search space and the second search space.

As an embodiment, the target information block is transmitted through RRC signaling.

As an embodiment, the target information block is used to indicate that the first node U1 is a Type B UE.

As an embodiment, the target information block is used to indicate that the first node U1 is capable of monitoring PDCCH in the first search space and the second search space according to two different TCIs, respectively.

As an embodiment, the time domain resources occupied by the second time frequency resource set and the time domain resources occupied by the third time frequency resource set overlap.

As an embodiment, at least one OFDM symbol belongs to both the time domain resource occupied by the second time frequency resource set and the time domain resource occupied by the third time frequency resource set.

As an embodiment, the time domain resource occupied by the second time frequency resource set and the time domain resource occupied by the third time frequency resource set belong to the same time slot.

For an embodiment, the second set of time-frequency resources occupies a positive integer number of OFDM symbols in the time domain.

As an embodiment, the third set of time-frequency resources occupies a positive integer number of OFDM symbols in the time domain.

As an embodiment, the first control resource set and the second control resource set correspond to a first control resource set identity and a second control resource set identity, respectively, and the first control resource set identity and the second control resource set identity are different.

For one embodiment, the first set of control resources is a CORESET.

For one embodiment, the second set of control resources is a CORESET.

As one embodiment, the first control resource set identity is a ControlResourceSetId.

As an embodiment, the second control resource set identity is a ControlResourceSetId.

For one embodiment, the first control resource set identity is a non-negative integer.

For one embodiment, the second control resource set identity is a non-negative integer.

As an embodiment, the first information block is used to indicate a first type of set of reference signal resources and a second type of set of reference signal resources; the MAC layer control element is configured to indicate the second reference signal resource from the first set of reference signal resources when both the first cell and the second cell can be used for scheduling the third cell; the MAC layer control element is configured to indicate the second reference signal resource from the second set of reference signal resources when the first cell or the second cell is used for scheduling the third cell.

As a sub-embodiment of this embodiment, the set of reference signal resources of the first type includes K1 reference signal resources of the first type.

As an additional sub-embodiment to this embodiment, K1 is equal to 1.

As an additional embodiment from this embodiment, K1 is greater than 1.

As an additional sub-embodiment of this embodiment, K1 is equal to 8.

As an auxiliary embodiment of this embodiment, any one of the K1 first-type reference signal resources includes one of a CSI-RS resource or an SSB resource.

As a subsidiary embodiment of this embodiment, any one of the K1 first-type reference signal resources includes one of a DMRS resource or an SRS resource.

As an auxiliary embodiment of this embodiment, any one of the K1 first-type reference signal resources corresponds to one TCI.

As an auxiliary embodiment of this embodiment, any one of the K1 first-type reference signal resources corresponds to one TCI-State.

As an auxiliary embodiment of this embodiment, any one of the K1 first-type reference signal resources corresponds to one TCI-StateId.

As an subsidiary embodiment of this embodiment, when both the first cell and the second cell can be used to schedule the third cell, the MAC layer control unit is configured to indicate the second reference signal resource from the K1 first type reference signal resources, where the second reference signal resource is one of the K1 first type reference signal resources.

As a sub-embodiment of the embodiment, the set of reference signal resources of the second type comprises K2 reference signal resources of the second type.

As an additional sub-embodiment of this embodiment, K2 is equal to 1.

As an additional embodiment of this embodiment, K2 is greater than 1.

As an additional sub-embodiment of this embodiment, K2 is equal to 8.

As an additional embodiment of this embodiment, any one of the K2 second type reference signal resources includes one of CSI-RS resources or SSBs.

As a subsidiary embodiment of this embodiment, any one of the K2 second-type reference signal resources includes one of a DMRS resource or an SRS resource.

As an auxiliary embodiment of this embodiment, any one of the K2 second-type reference signal resources corresponds to one TCI.

As a sub-embodiment of this embodiment, any one of the K2 second-type reference signal resources corresponds to one TCI-State.

As an auxiliary embodiment of this embodiment, any one of the K2 second-class reference signal resources corresponds to one TCI-StateId.

As a subsidiary embodiment of this embodiment, when the first cell or the second cell is used to schedule the third cell, the MAC layer control element is configured to indicate the second reference signal resource from the K2 second-type reference signal resources, the second reference signal resource being one of the K2 second-type reference signal resources.

As an embodiment, the first set of time-frequency resources includes M1 PDCCH candidates (candidates), where M1 is a positive integer greater than 1, and the first signaling occupies one PDCCH Candidate of the M1 PDCCH candidates.

As a sub-embodiment of this embodiment, any one of the M1 PDCCH candidates occupies a positive integer number of REs greater than 1.

As an embodiment, the second set of time-frequency resources and the third set of time-frequency resources collectively include M2 PDCCH candidates, where M2 is a positive integer greater than 1, and the second signaling occupies one PDCCH candidate among the M2 PDCCH candidates.

As a sub-embodiment of this embodiment, any one of the M2 PDCCH candidates occupies a positive integer number of REs greater than 1.

Example 6

Embodiment 6 illustrates a schematic diagram of a first set of time-frequency resources and a second set of time-frequency resources, as shown in fig. 6. In fig. 6, the first set of time-frequency resources and the second set of time-frequency resources are associated to the same CORESET.

As an embodiment, the first set of time-frequency resources and the second set of time-frequency resources are associated to the same search space.

As an embodiment, the first set of time-frequency resources and the second set of time-frequency resources are associated to the same set of search spaces.

As an embodiment, the first set of time-frequency resources and the second set of time-frequency resources occupy the same RB (Resource Block) in the frequency domain.

As an embodiment, the first set of time-frequency resources and the second set of time-frequency resources occupy OFDM symbols at the same position in two slots in the time domain, respectively.

Example 7

Embodiment 7 illustrates a schematic diagram of the second set of time frequency resources and the third set of time frequency resources, as shown in fig. 7. In fig. 7, the second set of time-frequency resources and the third set of time-frequency resources are associated to two different CORESET, respectively.

As an embodiment, the second set of time-frequency resources and the third set of time-frequency resources are associated to two different search spaces, respectively.

As an embodiment, the second set of time-frequency resources and the third set of time-frequency resources are associated to two different sets of search spaces, respectively.

As an embodiment, the subcarriers occupied by the second time-frequency resource set in the frequency domain and the subcarriers occupied by the third time-frequency resource set in the frequency domain are orthogonal.

Example 8

Embodiment 8 illustrates a schematic diagram of a first cell and a second cell according to the present application; as shown in fig. 8. In fig. 8, the first cell is capable of Self-Scheduling (Self-Scheduling) and the second cell is capable of Scheduling the first cell. The dashed arrows in the figure correspond to scheduling.

As an embodiment, the first cell is a PCell or PSCell and the second cell is an scell.

As an embodiment, the second cell is capable of self-scheduling.

As an embodiment, the first cell is not capable of scheduling cells other than the first cell.

As an embodiment, the second cell is capable of scheduling cells other than the second cell, as well as cells other than the first cell.

Example 9

Example 9 illustrates a schematic diagram of a given set of reference signal resources, as shown in fig. 9. In fig. 9, the given set of reference signal resources comprises K3 candidate reference signal resources; the K3 candidate reference signal resources are associated to a second node in the application.

As an embodiment, the given set of reference signal resources is the set of reference signal resources of the first type, the K3 is equal to the K1 in this application, and the K3 candidate reference signal resources are the K1 reference signal resources of the first type in this application, respectively.

As an embodiment, the given set of reference signal resources is the set of reference signal resources of the second class, the K3 is equal to the K2 in this application, and the K3 candidate reference signal resources are the K2 reference signal resources of the second class in this application, respectively.

As an embodiment, the K3 candidate reference signal resources respectively correspond to K3 spatial receiving parameters.

As an embodiment, the K3 candidate reference signal resources respectively correspond to K3 spatial transmission parameters.

As an embodiment, the K3 candidate reference signal resources respectively correspond to K3 antenna ports.

As an embodiment, the K3 candidate reference signal resources respectively correspond to K3 antenna port groups.

Example 10

Embodiment 10 illustrates a block diagram of the structure in a first node, as shown in fig. 10. In fig. 10, a first node 1000 comprises a first transceiver 1001, a first receiver 1002 and a second receiver 1003.

A first transceiver 1001, configured to receive a first signaling in a first set of time-frequency resources, where a demodulation reference signal and a first reference signal resource of a channel occupied by the first signaling are quasi co-located;

a first receiver 1002 receiving a MAC layer control element, the MAC layer control element being used to indicate a second reference signal resource;

a second receiver 1003, configured to monitor a second signaling in at least a third time-frequency resource set of the second time-frequency resource set and the third time-frequency resource set, where demodulation reference signals and third reference signal resources of a channel occupied by the second signaling are quasi co-located;

in embodiment 10, the MAC layer controlling unit is configured to determine a first time, where a starting time of the second set of time-frequency resources is not earlier than the first time; the frequency domain resources occupied by the first time frequency resource set and the frequency domain resources occupied by the second time frequency resource set belong to a first cell, the frequency domain resources occupied by the third time frequency resource set belong to a second cell, and the first cell is different from the second cell; the first signaling and the second signaling are both physical layer signaling; the first set of time-frequency resources and the second set of time-frequency resources are both associated to a first control resource set identity, and the third set of time-frequency resources are both associated to a second control resource identity; the MAC layer control element includes only the former of the first control resource set identity and the second control resource identity; whether both the first cell and the second cell can be used to schedule a third cell is used to determine whether the third reference signal resource is equal to the second reference signal resource.

As an embodiment, the first transceiver 1001 transmits a target information block; the first time frequency resource set and the second time frequency resource set are associated to a first search space, the third time frequency resource set is associated to a second search space, and time domain resources occupied by the first search space and time domain resources occupied by the second search space are overlapped; the target information block indicates that the first node can simultaneously monitor a physical downlink control channel for scheduling the third cell in the first search space and the second search space.

For one embodiment, the first transceiver 1001 receives a first information block and a second information block; the first information block is used to indicate the first set of control resources, the second information block is used to indicate the second set of control resources; the first set of control resources and the second set of control resources are different.

As one embodiment, the first transceiver 1001 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 embodiment 4.

For one embodiment, the first receiver 1002 comprises at least the first 4 of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 of embodiment 4.

For one embodiment, the second receiver 1003 comprises at least the first 4 of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 of embodiment 4.

As an embodiment, the first signaling and the second signaling are both PDCCHs, the first reference signal resource corresponds to one TCI, the second reference signal resource corresponds to one TCI, the third reference signal resource corresponds to one TCI, the first cell is a PCell or a PSCell, the second cell is an scell, the third cell is a PCell or a PSCell, the first set of time-frequency resources and the second set of time-frequency resources are associated to a first CORESET, the third set of time-frequency resources is associated to a second CORESET, the first CORESET and the second CORESET are different; the second set of time frequency resources and the third set of time frequency resources overlap in the time domain.

Example 11

Embodiment 11 illustrates a block diagram of the structure in a second node, as shown in fig. 11. In fig. 11, the second node 1100 comprises a second transceiver 1101, a first transmitter 1102 and a second transmitter 1103.

A second transceiver 1101, configured to send a first signaling in a first set of time-frequency resources, where a demodulation reference signal of a channel occupied by the first signaling and a first reference signal resource are quasi co-located;

a first transmitter 1102 that transmits a MAC layer control element, the MAC layer control element being used to indicate a second reference signal resource;

a second transmitter 1103, configured to send a second signaling in one of a second time-frequency resource set and a third time-frequency resource set, where a demodulation reference signal and a third reference signal resource of a channel occupied by the second signaling are quasi co-located;

in embodiment 11, the MAC layer controlling unit is configured to determine a first time, where a starting time of the second set of time-frequency resources is not earlier than the first time; the frequency domain resources occupied by the first time frequency resource set and the frequency domain resources occupied by the second time frequency resource set belong to a first cell, the frequency domain resources occupied by the third time frequency resource set belong to a second cell, and the first cell is different from the second cell; the first signaling and the second signaling are both physical layer signaling; the first set of time-frequency resources and the second set of time-frequency resources are both associated to a first control resource set identity, and the third set of time-frequency resources are both associated to a second control resource identity; the MAC layer control element includes only the former of the first control resource set identity and the second control resource identity; whether both the first cell and the second cell can be used to schedule a third cell is used to determine whether the third reference signal resource is equal to the second reference signal resource.

For one embodiment, the second transceiver 1101 receives a target information block; the first time frequency resource set and the second time frequency resource set are associated to a first search space, the third time frequency resource set is associated to a second search space, and time domain resources occupied by the first search space and time domain resources occupied by the second search space are overlapped; the target information block indicates that the first node can simultaneously monitor a physical downlink control channel for scheduling the third cell in the first search space and the second search space.

For one embodiment, the second transceiver 1101 transmits a first information block and a second information block; the first information block is used to indicate the first set of control resources, the second information block is used to indicate the second set of control resources; the first set of control resources and the second set of control resources are different.

As an embodiment, the first information block is used to indicate a first type of set of reference signal resources and a second type of set of reference signal resources; the MAC layer control element is configured to indicate the second reference signal resource from the first set of reference signal resources when both the first cell and the second cell can be used to schedule the third cell; the MAC layer control element is configured to indicate the second reference signal resource from the second set of reference signal resources when the first cell or the second cell is used for scheduling the third cell.

For one embodiment, the second transceiver 1101 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 in embodiment 4.

For one embodiment, the first transmitter 1102 includes at least the first 4 of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 414, the controller/processor 475 of embodiment 4.

For one embodiment, the second transmitter 1103 includes at least the first 4 of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 414, and the controller/processor 475 of embodiment 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in 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 by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The first node in this application includes but not limited to wireless communication devices such as cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, vehicle, RSU, aircraft, unmanned aerial vehicle, remote control plane. 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 and reception node TRP, a GNSS, a relay satellite, a satellite base station, an air base station, an RSU, an unmanned aerial vehicle, a testing device, a transceiver device or a signaling tester simulating a function of a part of a base station, and other wireless communication devices.

It will be appreciated by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The presently disclosed embodiments are therefore to be considered in all respects as illustrative and not restrictive. The scope of the invention is indicated by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalents thereof are intended to be embraced therein.

Claims

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

the second receiver monitors a second signaling in the second time frequency resource set and at least a third time frequency resource set in the third time frequency resource set, and a demodulation reference signal and a third reference signal resource of a channel occupied by the second signaling are quasi co-located;

2. The first node of claim 1, wherein the third reference signal resource is equal to the second reference signal resource when both the first cell and the second cell can be used to schedule the third cell; the third reference signal resource is independent of the second reference signal resource when the first cell or the second cell is used to schedule the third cell.

3. The first node according to claim 1 or 2, wherein the first and second cells are cells of a first and second type, respectively, or the first and second cells are cells of the second and first type, respectively; the third cell is the first type cell.

4. The first node according to any of claims 1-3, wherein the first transceiver transmits a target information block; the first time frequency resource set and the second time frequency resource set are associated to a first search space, the third time frequency resource set is associated to a second search space, and time domain resources occupied by the first search space and time domain resources occupied by the second search space are overlapped; the target information block indicates that the first node can simultaneously monitor a physical downlink control channel for scheduling the third cell in the first search space and the second search space.

5. The first node according to any of claims 1 to 4, wherein there is an overlap of time domain resources occupied by the second set of time frequency resources and time domain resources occupied by the third set of time frequency resources.

6. The first node according to any of claims 1 to 5, wherein the first transceiver receives a first information block and a second information block; the first information block is used to indicate the first set of control resources, the second information block is used to indicate the second set of control resources; the first set of control resources and the second set of control resources are different.

7. The first node according to claim 6, wherein the first information block is used to indicate a first type of set of reference signal resources and a second type of set of reference signal resources; the MAC layer control element is configured to indicate the second reference signal resource from the first set of reference signal resources when both the first cell and the second cell can be used for scheduling the third cell; the MAC layer control element is configured to indicate the second reference signal resource from the second set of reference signal resources when the first cell or the second cell is used for scheduling the third cell.

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

the second transceiver sends a first signaling in a first time-frequency resource set, and a demodulation reference signal of a channel occupied by the first signaling and a first reference signal resource are quasi co-located;

9. A method in a first node in wireless communication, comprising:

receiving a first signaling in a first time-frequency resource set, wherein a demodulation reference signal and a first reference signal resource of a channel occupied by the first signaling are quasi co-located;

10. A method in a second node in wireless communication, comprising: