WO2023151671A1

WO2023151671A1 - Method and apparatus used in node for wireless communication

Info

Publication number: WO2023151671A1
Application number: PCT/CN2023/075555
Authority: WO
Inventors: 蒋琦; 张晓博
Original assignee: 上海朗帛通信技术有限公司
Priority date: 2022-02-14
Filing date: 2023-02-12
Publication date: 2023-08-17
Also published as: CN116647922A

Abstract

The present application discloses a method and apparatus used in a node for wireless communication. A node first receives a first information block and receives first signaling, the first information block being used for determining a first cell set, the first signaling being used for indicating a first frequency domain resource set, and the first cell set comprising a plurality of serving cells, and then receives or sends a first signal in the first frequency domain resource set; the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to a first cell; the first cell comprises K1 candidate bandwidth parts, and the target bandwidth part is one of the K1 candidate bandwidth parts; K1 is a positive integer greater than 1; and whether the first cell belongs to the first cell set is used for determining the target bandwidth part from among the K1 candidate bandwidth parts. According to the present application, the design of a bandwidth part under multi-carrier scheduling is improved, so that the flexibility of a system is improved.

Description

A method and device used in a node for wireless communication

technical field

The present application relates to a transmission method and device in a wireless communication system, in particular to a transmission scheme and device for multi-carrier scheduling in wireless communication.

Background technique

Both LTE (Long-Term Evolution, long-term evolution) and 5G wireless cellular communication network systems support scenarios where multiple carriers are scheduled simultaneously. Scheduling PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) on multiple carriers to increase the transmission rate. A feature of multi-carrier scheduling is that each PDSCH requires a DCI for scheduling, and one DCI cannot simultaneously schedule multiple PDSCHs on multiple carriers.

In the discussion of NR R17, the topic of scheduling PDSCH or PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) on multiple carriers based on one DCI was established. Correspondingly, how to schedule PDSCH or PUSCH on multiple carriers through one DCI PUSCH's solutions need to be researched and discussed.

Contents of the invention

An important enhancement in 5G NR is the introduction of the concept of BWP (Bandwidth Part, bandwidth part). A serving cell often includes multiple BWPs. Each BWP can be configured with different SCS (Subcarrier Spacing, subcarrier spacing), or it can be independently Configure the bandwidth, and a terminal will not have more than one BWP activated at the same time under one serving cell. Further, the base station can dynamically switch the activated BWP of the terminal through the DCI. The above method not only ensures the flexibility of BWP configuration, but also allows terminals with different bandwidth capabilities to be connected to the NR system to be served. However, the above BWP-related design needs to be reconsidered and designed in the scenario where one DCI schedules multiple carriers.

Aiming at the above multi-carrier scheduling scenario, the present application discloses a solution. It should be noted that in the description of this application, multi-carrier is only used as a typical application scenario or example; this application is also applicable to other scenarios facing similar problems, such as single-carrier scenarios, or for different technical fields, such as In technical fields other than dynamic scheduling, such as measurement report field, control signaling transmission and other non-dynamic scheduling fields, similar technical effects can be achieved. In addition, adopting a unified solution for different scenarios (including but not limited to multi-panel scenarios) also helps to reduce hardware complexity and cost. In the case of no conflict, the embodiments in the first node device of the present application and the features in the embodiments can be applied to the second node device, and vice versa. Particularly, the explanation (if not adding special instructions) to term (Terminology), noun, function, variable in this application can refer to 3GPP standard protocol TS (Technical Specification, technical specification) in 36 series, TS38 series, TS37 series definition.

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

receiving a first information block and receiving first signaling, the first information block is used to determine a first set of cells, the first signaling is used to indicate a first set of frequency domain resources, and the first set of cells Including multiple serving cells;

receiving a first signal in the first set of frequency domain resources;

Wherein, the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is the K1 candidate bandwidth parts One of them; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth part from the K1 candidate bandwidth parts.

sending a first signal in the first set of frequency domain resources;

Wherein, the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is the K1 candidate bandwidth parts One of them; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth part from the K1 candidate bandwidth parts point.

As an embodiment, the above method is characterized in that: the determination of the BWP is related to whether the carrier to which the BWP belongs can perform single DCI scheduling for multiple carriers.

As an embodiment, another feature of the above method is to simplify the design of scheduling multiple carriers with a single DCI, reduce the complexity of standard implementation, and ensure better forward compatibility.

According to an aspect of the present application, when the first cell belongs to the first set of cells, the target bandwidth part is the first bandwidth part among the K1 candidate bandwidth parts; when the first cell does not belong to When the first cell is assembled, the target bandwidth part is the second bandwidth part among the K1 candidate bandwidth parts; the first bandwidth part is irrelevant to the second bandwidth part.

According to one aspect of the present application, all the serving cells included in the first set of cells can be scheduled by the same downlink control information.

According to one aspect of the application, including:

Respectively receive Q2 first-type signals in Q2 candidate frequency-domain resource sets;

Wherein, the first signaling is used to determine the Q2 candidate frequency domain resource sets, and the Q2 is a positive integer; the first cell set includes Q1 serving cells, and the Q1 is a positive integer greater than 1; The Q2 is smaller than the Q1; the Q2 candidate frequency domain resource sets respectively belong to the Q2 candidate bandwidth parts, and the Q2 candidate bandwidth parts respectively belong to the Q2 serving cells in the Q1 serving cells; the Q2 The Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells are fixed, or the Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells is configurable.

According to one aspect of the application, including:

Send Q2 first-type signals respectively in Q2 candidate frequency domain resource sets;

As an embodiment, the above method is characterized in that: the first signaling is used to simultaneously schedule the first signal and the Q2 first-type signals.

According to an aspect of the present application, the Q2 candidate bandwidth parts and the target bandwidth part all use the first subcarrier spacing.

As an embodiment, the above method is characterized in that: the SCSs of multiple BWPs in multiple carriers that can be scheduled simultaneously are the same, thereby avoiding implementation complexity brought about by different scheduling delays.

According to one aspect of the present application, the first signaling includes a first field, and the first field included in the first signaling is used to determine the first cell and The Q2 serving cells.

As an embodiment, the above method is characterized in that: the first signaling dynamically indicates the first cell and the Q2 serving cells, so as to improve scheduling flexibility.

According to an aspect of the present application, the first set of cells includes Q1 serving cells, the Q1 serving cells correspond to Q1 scheduling indicator values, and the Q1 scheduling indicator values are all the same.

As an embodiment, the above method is characterized in that: the identifiers of multiple serving cells that can be scheduled at the same time are set to be the same, so as to simplify the design scheme when single DCI schedules multiple carriers.

According to an aspect of the present application, at least one of the number of bits included in at least one field carried by the first signaling or the number of fields included in the first signaling and the first number value, the first quantity value is equal to the sum of Q2 and 1.

As an embodiment, the above method is characterized in that: the number of related fields or the number of bits in the scheduling DCI is determined according to the actually indicated number of multiple carriers scheduled simultaneously.

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

Sending a first information block and sending first signaling, the first information block is used to determine a first set of cells, the first signaling is used to indicate a first set of frequency domain resources, and the first set of cells Including multiple serving cells;

sending a first signal in the first set of frequency domain resources;

Wherein, the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to a first cell; the first cell Including K1 candidate bandwidth parts, the target bandwidth part is one of the K1 candidate bandwidth parts; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth part from the K1 candidate bandwidth parts.

Sending a first information block and receiving first signaling, the first information block is used to determine a first set of cells, the first signaling is used to indicate a first set of frequency domain resources, and the first set of cells Including multiple serving cells;

receiving a first signal in the first set of frequency domain resources;

According to one aspect of the application, including:

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

The first receiver receives the first information block and receives the first signaling, the first information block is used to determine the first cell set, the first signaling is used to indicate the first frequency domain resource set, the The first set of cells includes a plurality of serving cells;

a first transceiver, receiving a first signal in the first frequency domain resource set;

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

a first transceiver, sending a first signal in the first frequency domain resource set;

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

The first transmitter sends a first information block and sends first signaling, where the first information block is used to determine a first cell set, and where the first signaling is used to indicate a first frequency domain resource set, so The first set of cells includes a plurality of serving cells;

a second transceiver, sending a first signal in the first frequency domain resource set;

a second transceiver, receiving a first signal in the first frequency domain resource set;

As an embodiment, the benefit of the solution in this application lies in: designing a BWP selection and confirmation method when a single DCI schedules multiple carriers, simplifying system design, and improving forward compatibility of the design solution while ensuring flexible scheduling.

Description of drawings

Other characteristics, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 shows the processing flowchart of the first node according to an embodiment of the present application;

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

FIG. 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a 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 flowchart of a first signal according to an embodiment of the present application;

FIG. 6 shows a flowchart of a first signal according to another embodiment of the present application;

FIG. 7 shows a flowchart of Q2 first-type signals according to an embodiment of the present application;

FIG. 8 shows a flowchart of Q2 first-type signals according to another embodiment of the present application;

Fig. 9 shows a schematic diagram of a first cell according to an embodiment of the present application;

Fig. 10 shows a schematic diagram of a first set of cells according to an embodiment of the present application;

FIG. 11 shows a schematic diagram of first signaling according to an embodiment of the present application;

Fig. 12 shows a schematic diagram of first signaling according to another embodiment of the present application;

Fig. 13 shows a structural block diagram of a processing device in a first node device according to an embodiment of the present application;

Fig. 14 shows a structural block diagram of a processing device in a second node device according to an embodiment of the present application.

Detailed ways

The technical solution of the present application will be described in further detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined arbitrarily.

Example 1

Embodiment 1 illustrates a processing flowchart of a first node, as shown in FIG. 1 . In 100 shown in FIG. 1, each box represents a step. In Embodiment 1, the first node in this application receives the first information block and the first signaling in step 101, the first information block is used to determine the first set of cells, and the first signaling It is used to indicate a first frequency domain resource set, and the first cell set includes a plurality of serving cells; in step 102, a first signal is received in the first frequency domain resource set, or in the first frequency domain The first signal is sent in the resource set.

In Embodiment 1, the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is the K1 One of the candidate bandwidth parts; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth part from the K1 candidate bandwidth parts.

As an embodiment, the first information block is transmitted through RRC (Radio Resource Control, radio resource control) signaling.

As an embodiment, the name of the RRC signaling carrying the first information block includes Cross.

As an embodiment, the name of the RRC signaling carrying the first information block includes Carrier.

As an embodiment, the name of the RRC signaling carrying the first information block includes Multi Cell.

As an embodiment, the name of the RRC signaling carrying the first information block includes Scheduling.

As an embodiment, the first information block includes one or more fields included in the CrossCarrierSchedulingConfig IE (Information Elements, information element) in TS 38.331.

As an embodiment, the physical layer channel occupied by the first signaling includes a PDCCH (Physical Downlink Control Channel, physical downlink control channel).

As an embodiment, the first signaling is DCI.

As an embodiment, the first signaling is a downlink grant (DL Grant).

As an embodiment, the first signaling is an uplink grant (UL Grant).

As an embodiment, the first information block is used to indicate the first set of cells.

As a sub-embodiment of this embodiment, the first set of cells includes Q1 serving cells, where Q1 is a positive integer greater than 1, and the Q1 serving cells correspond to Q1 PCIs respectively, and the first information block Indicates the Q1 PCIs.

As a sub-embodiment of this embodiment, the first set of cells includes Q1 serving cells, where Q1 is a positive integer greater than 1, and the Q1 serving cells respectively correspond to Q1 ServCellIndexes, and the first information block Indicates the Q1 ServCellIndex.

As a sub-embodiment of this embodiment, the first set of cells includes Q1 serving cells, where Q1 is a positive integer greater than 1, and the Q1 serving cells correspond to Q1 servCellIds respectively, and the first information block Indicates the Q1 servCellIds.

As a sub-embodiment of this embodiment, the first set of cells includes Q1 serving cells, where Q1 is a positive integer greater than 1, and the Q1 serving cells correspond to Q1 ServCellIdentities respectively, and the first information block Indicates the Q1 ServCellIdentities.

As an embodiment, the first signaling is used to indicate the location of the frequency domain resource occupied by the first frequency domain resource set.

As an embodiment, the first frequency-domain resource set occupies frequency-domain resources corresponding to a positive integer number of RBs (Resource Blocks, resource blocks) in the frequency domain.

As an embodiment, the first frequency domain resource set occupies a positive integer number of subcarriers greater than 1 in the frequency domain.

As an embodiment, the target bandwidth part is a BWP.

As an embodiment, the target bandwidth part is a carrier.

As an embodiment, the target bandwidth part is a sub-band (Subband).

As an embodiment, the target bandwidth part occupies frequency domain resources corresponding to a number of positive integers greater than 1 that are continuous in the frequency domain.

As an embodiment, the target bandwidth part corresponds to one BWP-Id.

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

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

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

As an embodiment, the first signal is generated by a CBG (Code Block Group, code block group).

As an embodiment, the first signaling is used to indicate an MCS (Modulation and Coding Scheme, modulation and coding scheme) of the first signal.

As an embodiment, the first signaling is used to indicate a HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request) process number of the first signal.

As an embodiment, the first signaling is used to indicate an RV (Redundancy Version, redundancy version) adopted by the first signal.

As an embodiment, the first signaling is used to indicate an NDI (New Data Indicator, New Data Indicator) corresponding to the first signal.

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

As an embodiment, the first cell corresponds to a PCI (Physical Cell Identity, physical cell identity).

As an embodiment, the first cell corresponds to a ServCellIndex.

As an embodiment, the first cell corresponds to one ServCellId.

As an embodiment, the first cell corresponds to a ServCellIdentity.

As an example, the K1 is equal to 4.

As an embodiment, the K1 is a positive integer greater than 4.

As an embodiment, the K1 candidate bandwidth parts are K1 BWPs respectively.

As an embodiment, the K1 candidate bandwidth parts are K1 sub-frequency bands respectively.

As an embodiment, at least two candidate bandwidth parts among the K1 candidate bandwidth parts use different subcarrier spacings.

As an embodiment, the subcarrier intervals adopted by any two candidate bandwidth parts in the K1 candidate bandwidth parts are different.

As an embodiment, the total payload (Payload) included in the first signaling is fixed.

Example 2

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

FIG. 2 illustrates a diagram of a network architecture 200 of a 5G NR, LTE (Long-Term Evolution, long-term evolution) and LTE-A (Long-Term Evolution Advanced, enhanced long-term evolution) system. The 5G NR or LTE network architecture 200 may be called EPS (Evolved Packet System, Evolved Packet System) 200 by some other suitable term. EPS 200 may include a UE (User Equipment, user equipment) 201, NR-RAN (next generation radio access network) 202, EPC (Evolved Packet Core, evolved packet core)/5G-CN (5G-Core Network, 5G core Network) 210, HSS (Home Subscriber Server, Home Subscriber Server) 220 and Internet service 230. The EPS may be interconnected 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. NR-RAN includes NR Node B (gNB) 203 and other gNBs 204 . The gNB 203 provides user and control plane protocol termination towards the UE 201 . A gNB 203 may connect to other gNBs 204 via an Xn interface (eg, backhaul). A gNB 203 may also be called a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Service Set (BSS), Extended Service Set (ESS), TRP or some other suitable terminology. The gNB203 provides an access point to the EPC/5G-CN 210 for the UE201. Examples of UE 201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices , video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, NB-IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any Other devices with similar functions. Those skilled in the art may also refer to UE 201 as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, Mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client or some other suitable term. The gNB203 is connected to the EPC/5G-CN 210 through the S1/NG interface. EPC/5G-CN 210 includes MME (Mobility Management Entity, Mobility Management Entity)/AMF (Authentication Management Field, Authentication Management Field)/UPF (User Plane Function, User Plane Function) 211, other MME/AMF/UPF 214, S-GW (Service Gateway, service gateway) 212 and P-GW (Packet Date Network Gateway, packet data network gateway) 213 . MME/AMF/UPF 211 is a control node that handles signaling between UE 201 and EPC/5G-CN 210 . In general, MME/AMF/UPF 211 provides bearer and connection management. All user IP (Internet Protocol, Internet Protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW213. P-GW 213 provides UE IP address allocation and other functions. P-GW 213 is connected to Internet service 230 . The Internet service 230 includes Internet protocol services corresponding to operators, and specifically may include Internet, Intranet, IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) and packet-switched streaming services.

As an embodiment, the UE 201 corresponds to the first node in this application.

As an embodiment, the UE 201 supports multiple carriers being scheduled by the same DCI.

As an embodiment, the UE 201 supports scheduling of multiple serving cells by the same DCI.

As an embodiment, the UE 201 supports cross-carrier scheduling.

As an embodiment, the NR Node B corresponds to the second node in this application.

As an embodiment, the NR Node B supports scheduling of multiple carriers by the same DCI.

As an embodiment, the NR Node B supports scheduling of multiple serving cells by the same DCI.

As an embodiment, the NR Node B supports cross-carrier scheduling.

As an embodiment, the NR Node B is a base station.

As an embodiment, the NR Node B is a cell.

As an embodiment, the NR Node B includes multiple cells.

As an embodiment, the NR Node B is used to determine transmissions on multiple serving cells.

As an embodiment, the first node in this application corresponds to the UE201, and the second node in this application corresponds to the NR Node B.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture of a user plane and a control plane according to the present application, as shown in FIG. 3 . FIG. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300. FIG. 3 shows three layers for the first communication node device (UE, gNB or RSU in V2X) and the second The radio protocol architecture of the control plane 300 between communication node devices (gNB, UE or RSU in V2X): 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 PHY 301 . A layer 2 (L2 layer) 305 is above the PHY 301 and is responsible for a link between the first communication node device and the second communication node device through the PHY 301 . L2 layer 305 includes MAC (Medium Access Control, Media Access Control) sublayer 302, RLC (Radio Link Control, radio link layer control protocol) sublayer 303 and PDCP (Packet Data Convergence Protocol, packet data convergence protocol) sublayer 304. These sublayers are terminated 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 encrypting data packets, and the PDCP sublayer 304 also provides handoff support for the first communication node device to the second communication node device. The RLC sublayer 303 provides segmentation and reassembly of upper layer 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 (eg, resource blocks) in a cell among the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control, radio resource control) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (that is, radio bearers) and using the connection between the second communication node device and the first communication node device Inter- RRC signaling to configure the lower layer. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer), the radio protocol architecture for the first communication node device and the second communication node device in the user plane 350 is for the physical layer 351, L2 The PDCP sublayer 354 in the layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355 are substantially the same 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 also includes a SDAP (Service Data Adaptation Protocol, Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for the mapping between the QoS flow and the data radio bearer (DRB, Data Radio Bearer) , to support business 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) terminating at the P-GW on the network side and another layer terminating at the connection. Application layer at one end (eg, remote UE, server, etc.).

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

As an embodiment, the wireless protocol architecture in Fig. 3 is applicable to the second node in this application.

As an embodiment, the PDCP 304 of the second communication node device is used to generate the schedule of the first communication node device.

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

As an embodiment, the first information block is generated by the MAC302 or the MAC352.

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

As an embodiment, the first signaling is generated by the PHY301 or the PHY351.

As an embodiment, the first signaling is generated by the MAC302 or the MAC352.

As an embodiment, the first signal is generated by the PHY301 or the PHY351.

As an embodiment, the first signal is generated by the MAC302 or the MAC352.

As an embodiment, the first signal is generated by the RRC306.

As an embodiment, any first-type signal among the Q2 first-type signals is generated by the PHY301 or the PHY351.

As an embodiment, any first-type signal among the Q2 first-type signals is generated by the MAC302 or the MAC352.

As an embodiment, any first-type signal among the Q2 first-type signals is generated by the RRC306.

As an embodiment, the first node is a terminal.

As an embodiment, the first node is a relay.

As an embodiment, the second node is a relay.

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

As an embodiment, the second node is a gNB.

As an embodiment, the second node is a TRP (Transmitter Receiver Point, sending and receiving point).

As an embodiment, the second node is used to manage multiple TRPs.

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

As an embodiment, the second node is a node for managing multiple serving cells.

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

Second communications device 410 includes controller/processor 475 , memory 476 , receive processor 470 , transmit processor 416 , multi-antenna receive processor 472 , multi-antenna transmit processor 471 , transmitter/receiver 418 and antenna 420 .

In transmission from said second communication device 410 to said first communication device 450 , at said second communication device 410 upper layer data packets from the core network are provided to a controller/processor 475 . Controller/processor 475 implements the functionality of the L2 layer. In transmission from the second communications device 410 to the first communications device 450, the controller/processor 475 provides header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels. Multiplexing, and allocation of radio resources to said first communication device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets, and signaling to the first communication device 450 . The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (ie, physical layer). The transmit processor 416 implements encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, and based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift Mapping of signal clusters for keying (QPSK), M phase shift keying (M-PSK), M quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding on the coded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with a reference signal (e.g., pilot) in the time and/or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate A physical channel that carries a time-domain multi-carrier symbol stream. Then the multi-antenna transmit processor 471 performs a transmit analog precoding/beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into an RF stream, which is then provided to a different antenna 420 .

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

In transmission from said first communication device 450 to said second communication device 410 , at said first communication device 450 a data source 467 is used to provide upper layer data packets to a controller/processor 459 . Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit function at the second communications device 410 described in the transmission from the second communications device 410 to the first communications device 450, the controller/processor 459 implements a header based on radio resource allocation Compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels, implementing L2 layer functions for user plane and control plane. The controller/processor 459 is also responsible for retransmission of lost packets, and signaling to the second communication device 410 . The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, and then transmits The processor 468 modulates the generated spatial stream into a multi-carrier/single-carrier symbol stream, which is provided to different antennas 452 via the transmitter 454 after undergoing analog precoding/beamforming operations 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 an RF symbol stream, and then provides it to the antenna 452 .

In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to that in the transmission from the second communication device 410 to the first communication device 450 The receive function at the first communication device 450 is described in the transmission. Each receiver 418 receives radio frequency signals through its respective antenna 420 , converts the received radio frequency signals to baseband signals, and provides the baseband signals to multi-antenna receive processor 472 and receive processor 470 . The receive processor 470 and the multi-antenna receive processor 472 jointly implement the functions of the L1 layer. Controller/processor 475 implements L2 layer functions. Controller/processor 475 can be associated with memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In transmission from said first communication device 450 to said second communication device 410, controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression . Control signal processing to recover upper layer data packets from UE450. Upper layer packets from controller/processor 475 may be provided to the core network.

As an embodiment, the first communication device 450 device includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to be compatible with the said at least one processor, said first communication device 450 apparatus at least: firstly receive a first information block and receive first signaling, said first information block is used to determine a first set of cells, said first The signaling is used to indicate a first set of frequency domain resources, and the first set of cells includes a plurality of serving cells; then a first signal is received in the first set of frequency domain resources, or a first signal is received in the first frequency domain resource The first signal is sent in the set; the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is the One of the K1 candidate bandwidth parts; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth from the K1 candidate bandwidth parts Part; the operation is a receive, or the operation is a send.

As an embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, and the computer-readable instruction program generates an action when executed by at least one processor, and the action includes: first receiving The first information block receives first signaling, the first information block is used to determine a first set of cells, the first signaling is used to indicate a first set of frequency domain resources, and the first set of cells includes A plurality of serving cells; then receiving a first signal in the first frequency domain resource set, or sending a first signal in the first frequency domain resource set; the first frequency domain resource set occupies a part of the target bandwidth, The target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is one of the K1 candidate bandwidth parts; the K1 is a positive integer greater than 1; Whether the first cell belongs to the first set of cells is used to determine the target bandwidth part from the K1 candidate bandwidth parts; the operation is receiving, or the operation is sending.

As an embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to be compatible with the at least one processors together. The apparatus of the second communication device 410 at least: firstly send a first information block and send a first signaling, the first information block is used to determine a first set of cells, and the first signaling is used to indicate a first A frequency domain resource set, the first cell set includes multiple serving cells; then a first signal is sent in the first frequency domain resource set, or a first signal is received in the first frequency domain resource set; The first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is one of the K1 candidate bandwidth parts One; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth part from the K1 candidate bandwidth parts; the operation is receiving, Or the operation is send.

As an embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program, and the computer-readable instruction program generates an action when executed by at least one processor, and the action includes: first Sending a first information block and sending first signaling, the first information block is used to determine a first set of cells, the first signaling is used to indicate a first set of frequency domain resources, and the first set of cells Including a plurality of serving cells; then sending a first signal in the first frequency domain resource set, or receiving a first signal in the first frequency domain resource set; the first frequency domain resource set occupies a target bandwidth part , the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is one of the K1 candidate bandwidth parts; the K1 is a positive integer greater than 1 ; whether the first cell belongs to the first set of cells is used to determine the target bandwidth part from the K1 candidate bandwidth parts; the operation is receiving, or the operation is sending.

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

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

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

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

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

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

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

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

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

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

As an embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, and the controller/processor 459 are used to receive The first information block and receive the first signaling; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least the front of the controller/processor 475 The four are used to send the first information block and send the first signaling.

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, and the controller/processor 459 are used to The first signal is received in the first frequency domain resource set; at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 The first four are used to send the first signal in the first frequency domain resource set.

As an implementation, at least the first four of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, and the controller/processor 459 are used in the A first signal is sent in a frequency domain resource set; the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, and at least the front of the controller/processor 475 The four are used to receive the first signal in the first set of frequency domain 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, and the controller/processor 459 are used to Receiving Q2 first-type signals in Q2 candidate frequency domain resource sets respectively; the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416, and the controller/processing At least the first four of the devices 475 are used to transmit Q2 first-type signals in the Q2 candidate frequency-domain resource sets respectively.

As an implementation, at least the first four of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, and the controller/processor 459 are used in Q2 Q2 first-type signals are respectively sent in a candidate frequency domain resource set; the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, and the controller/processor At least the first four in 475 are used to respectively receive Q2 first-type signals in Q2 candidate frequency-domain resource sets.

Example 5

Embodiment 5 illustrates a flowchart of a first signal, as shown in FIG. 5 . In FIG. 5, the communication between the first node U1 and the second node N2 is performed through a wireless link. It is particularly noted that the sequence in this embodiment does not limit the signal transmission sequence and implementation sequence in this application. In the case of no conflict, the embodiments, sub-embodiments and subsidiary embodiments in Embodiment 5 can be applied to any embodiment in Embodiment 6, 7 or 8; otherwise, in the case of no conflict, Any of the embodiments, sub-embodiments, and sub-embodiments of Embodiment 6, 7, or 8 can be applied to Embodiment 5.

For the first node U1 , in step S10, the first information block is received and the first signaling is received; in step S11, the first signal is received in the first frequency domain resource set.

For the second node N2 , in step S20, send the first information block and send the first signaling; in step S21, send the first signal in the first frequency domain resource set.

In Embodiment 5, the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is the K1 One of the candidate bandwidth parts; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth part from the K1 candidate bandwidth parts.

Typically, when the first cell belongs to the first set of cells, the target bandwidth part is the first bandwidth part among the K1 candidate bandwidth parts; when the first cell does not belong to the first When the cells are assembled, the target bandwidth part is the second bandwidth part among the K1 candidate bandwidth parts; the first bandwidth part has nothing to do with the second bandwidth part.

As an embodiment, the K1 candidate bandwidth parts respectively correspond to K1 BWP-Ids, and the BWP-Id corresponding to the first bandwidth part is the smallest one among the K1 BWP-Ids.

As an embodiment, the value of the BWP-Id corresponding to the first bandwidth part is fixed.

As an embodiment, the subcarrier spacing corresponding to the first bandwidth part is fixed.

As an embodiment, the subcarrier spacing corresponding to the first bandwidth part is indicated by the first information block.

As an embodiment, when the first node is configured with the first cell set, the first bandwidth part cannot be indicated through dynamic signaling, and the second bandwidth part can be indicated through dynamic signaling.

As an embodiment, when the first node is configured with the first cell set and the first cell belongs to the first cell set, the first bandwidth part cannot be indicated through dynamic signaling, and the first The second bandwidth part can be indicated through dynamic signaling.

As an embodiment, the first signaling includes a target field; when the first cell belongs to the first cell set, the value of the target field included in the first signaling is fixed; when When the first cell does not belong to the first cell set, the target field included in the first signaling is used to indicate the second bandwidth part.

As a sub-embodiment of this embodiment, the target field included in the first signaling is a Bandwidth part indicator field in the DCI.

As a sub-embodiment of this embodiment, the meaning of the phrase "the value of the target field included in the first signaling is fixed" includes: the target field included in the first signaling is not Used to indicate a BWP.

As a sub-embodiment of this embodiment, the meaning of the phrase "the value of the target field included in the first signaling is fixed" includes: the target field included in the first signaling is equal to 0.

As a sub-embodiment of this embodiment, the meaning of the phrase "the value of the target field included in the first signaling is fixed" includes: the target field included in the first signaling is equal to a fixed value.

As a sub-embodiment of this embodiment, the meaning of the phrase "the value of the target field included in the first signaling is fixed" includes: the target field included in the first signaling is equal to a predefined value.

As a sub-embodiment of this embodiment, the meaning of the phrase "the value of the target field included in the first signaling is fixed" includes: the target field included in the first signaling is Zero Padding bits.

As an embodiment, the meaning that the first bandwidth part is irrelevant to the second bandwidth part includes: the BWP-Id corresponding to the first bandwidth part is different from the BWP-Id corresponding to the second bandwidth part.

As an embodiment, the meaning that the first bandwidth part is irrelevant to the second bandwidth part includes: frequency domain resources occupied by the first bandwidth part are different from frequency domain resources occupied by the second bandwidth part.

As an embodiment, the meaning that the first bandwidth part is irrelevant to the second bandwidth part includes: the first bandwidth part occupies The used frequency domain resource and the frequency domain resource occupied by the second bandwidth part are orthogonal in the frequency domain.

As an embodiment, the meaning that the first bandwidth part is irrelevant to the second bandwidth part includes: the first bandwidth part is different from the second bandwidth part.

As an embodiment, the meaning that the first bandwidth part is irrelevant to the second bandwidth part includes: the second bandwidth part is not used to determine the first bandwidth part.

As an embodiment, the meaning that the first bandwidth part is irrelevant to the second bandwidth part includes: the first bandwidth part is not used to determine the second bandwidth part.

As an embodiment, the meaning that the first bandwidth part is irrelevant to the second bandwidth part includes: the first bandwidth part is predefined, and the second bandwidth part is determined through the Bandwidth part indicator included in the DCI indicated by the domain.

Typically, all serving cells included in the first set of cells can be scheduled by the same downlink control information.

As an embodiment, the downlink control information is DCI.

As an embodiment, the first information block is used to indicate that all serving cells included in the first set of cells can be scheduled by the same downlink control information.

As an embodiment, the downlink control information is dynamic signaling.

As an embodiment, the downlink control information is used to indicate a scheduled serving cell from all serving cells included in the first set of cells.

As an embodiment, the downlink control information is used to indicate multiple scheduled serving cells from all serving cells included in the first set of cells.

Typically, the first set of cells includes Q1 serving cells, the Q1 serving cells correspond to Q1 scheduling indicator values, and the Q1 scheduling indicator values are all the same.

As an embodiment, the Q1 scheduling indicator values are respectively Q1 cif-InSchedulingCells.

As an embodiment, the Q1 scheduling indicator values are respectively Q1 CIF (Carrier Indicator Field, carrier indicator field) values.

As an embodiment, the Q1 scheduling indicator values are all equal to the first value.

As a sub-embodiment of this embodiment, the first value is equal to 0.

As a sub-embodiment of this embodiment, the first numerical value is equal to 8.

As a sub-embodiment of this embodiment, the first value is configured through RRC signaling.

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

Example 6

Embodiment 6 illustrates a flowchart of a first signal, as shown in FIG. 6 . In FIG. 6, the communication between the first node U3 and the second node N4 is performed through a wireless link. It is particularly noted that the sequence in this embodiment does not limit the signal transmission sequence and implementation sequence in this application. In the case of no conflict, the embodiments, sub-embodiments and subsidiary embodiments in Embodiment 6 can be applied to any embodiment in Embodiment 5, 7 or 8; otherwise, in the case of no conflict, Any of the embodiments, sub-embodiments, and sub-embodiments in Embodiment 5, 7, or 8 can be applied to Embodiment 6.

For the first node U3 , in step S30, the first information block is received and the first signaling is received; in step S31, the first signal is sent in the first frequency domain resource set.

For the second node N4 , in step S40, the first information block is sent and the first signaling is sent; in step S41, the first signal is received in the first frequency domain resource set.

In Embodiment 6, the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is the K1 One of the candidate bandwidth parts; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth part from the K1 candidate bandwidth parts.

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

Example 7

Embodiment 7 illustrates a flow chart of Q2 first-type signals, as shown in FIG. 7 . In FIG. 7, the first node U5 communicates with the second node N6 through a wireless link. It is particularly noted that the sequence in this embodiment does not limit the signal transmission sequence and implementation sequence in this application. In the case of no conflict, the embodiments, sub-embodiments and subsidiary embodiments in Embodiment 7 can be applied to any embodiment in Embodiment 5, 6 or 8; otherwise, in the case of no conflict, Any of the embodiments, sub-embodiments, and sub-embodiments in Embodiment 5, 6, or 8 can be applied to Embodiment 7.

For the first node U5 , in step S50, Q2 first-type signals are respectively received in the Q2 candidate frequency domain resource sets.

For the second node N6 , in step S60, Q2 first-type signals are respectively sent in the Q2 candidate frequency domain resource sets.

In Embodiment 7, the first signaling is used to determine the Q2 candidate frequency domain resource sets, and the Q2 is a positive integer; the first cell set includes Q1 serving cells, and the Q1 is greater than 1 A positive integer; the Q2 is smaller than the Q1; the Q2 candidate frequency domain resource sets respectively belong to the Q2 candidate bandwidth parts, and the Q2 candidate bandwidth parts respectively belong to the Q2 serving cells in the Q1 serving cells; The Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells are fixed, or the Q2 first-class identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells A class of identities is configurable.

As an embodiment, any one of the Q2 candidate frequency domain resource sets occupies frequency domain resources corresponding to a positive integer number of RBs.

As an embodiment, any one of the Q2 candidate frequency domain resource sets occupies a positive integer number of subcarriers greater than 1.

As an embodiment, the physical layer channel occupied by any one of the Q2 first-type signals includes a PDSCH.

As an embodiment, a physical layer channel occupied by any one of the Q2 first-type signals includes a PUSCH.

As an embodiment, any candidate bandwidth part among the Q2 candidate bandwidth parts is a BWP.

As an embodiment, any candidate bandwidth part in the Q2 candidate bandwidth parts is a sub-frequency band.

As an embodiment, the Q2 first-type identities are Q2 BWP-Ids respectively.

As an embodiment, the meaning of the above phrase "the Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells are fixed" includes: the value of the Q2 first-type identities It is fixed.

As an embodiment, the meaning of the above phrase "the Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells are fixed" includes: the value of the Q2 first-type identities Are the same.

As an embodiment, the meaning of the above phrase "the Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells are fixed" includes: the given candidate bandwidth part is the Q2 Any candidate bandwidth part in the candidate bandwidth part, the frequency domain resource occupied by the given candidate bandwidth part belongs to a given serving cell in the Q2 serving cells, and the given serving cell includes L1 bandwidth parts, The frequency domain position of the given candidate bandwidth part in the L1 bandwidth parts is fixed, or the frequency domain position of the given candidate bandwidth part in the L1 bandwidth parts is predefined; the L1 is a positive integer.

As an embodiment, the meaning of the above phrase "the Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells are configurable" includes: the Q2 first-type identities The value is configured through RRC signaling.

As an embodiment, the meaning of the above phrase "the Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells are configurable" includes: the Q2 first-type identities The value is indicated by MAC CE (Control Elements, control unit).

As an embodiment, the meaning of the above phrase "the Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells are configurable" includes: the Q2 first-type identities The value is indicated through signaling outside of the DCI.

As an embodiment, the meaning of the above phrase "the Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells are configurable" includes: the Q2 first-type identities Values are indicated through signaling other than dynamic signaling.

Typically, the Q2 candidate bandwidth parts and the target bandwidth part all use the first subcarrier spacing.

As an embodiment, the first information block is used to indicate the first subcarrier spacing.

As an embodiment, only one BWP among multiple bandwidth parts included in any of the Q1 serving cells included in the first set of cells adopts the first subcarrier spacing, and the first information block The indicated first subcarrier spacing is used to respectively determine Q1 bandwidth parts from the Q1 serving cells, and the Q1 bandwidth parts all use the first subcarrier spacing.

As an embodiment, any candidate bandwidth part in the Q2 candidate bandwidth parts is a bandwidth part in the Q1 bandwidth parts.

As an embodiment, the number of RBGs occupied by any candidate bandwidth part among the Q2 candidate bandwidth parts is the same as the number of RBGs occupied by the target bandwidth part.

As an embodiment, the number of RBs occupied by any one of the Q2 candidate bandwidth parts is the same as the number of RBs occupied by the target bandwidth part.

Typically, the first signaling includes a first field, and the first field included in the first signaling is used to determine the first cell and the Q2 serving cells from the Q1 serving cells. Serve the community.

As an embodiment, the first field included in the first signaling is a Carrier Indicator field in the DCI.

As an embodiment, the first field included in the first signaling is a Multi Cell Indicator field in the DCI.

As an embodiment, the first signaling includes a second field, and the second field included in the first signaling is used to indicate that the first field included in the first signaling is DCI The Carrier Indicator domain in DCI or the Multi Cell Indicator domain in DCI.

As an embodiment, the first field included in the first signaling is used to indicate the first cell and the Q2 serving cells from the Q1 serving cells.

As an embodiment, the serving cells in the Q1 serving cells form M1 serving cell sets, and any serving cell set in the M1 serving cell sets includes at least one serving cell in the Q1 serving cells, The first serving cell set in the M1 serving cell sets includes the first cell and the Q2 serving cells, and the first field included in the first signaling is used to obtain The serving cell set indicates the first serving cell set.

Typically, at least one of the number of bits included in at least one field carried by the first signaling or the number of fields included in the first signaling is related to the first quantity value, so The first quantity value is equal to the sum of Q2 and 1.

As an embodiment, the number of bits included in the third field included in the first signaling is related to the first number value.

As a sub-embodiment of this embodiment, the number of bits included in the third field is linearly related to the first number value.

As a sub-embodiment of this embodiment, the number of bits included in the third field is proportional to the first number value.

As a sub-embodiment of this embodiment, a quotient obtained by dividing the quantity of bits included in the third field by the first quantity value is fixed.

As a sub-embodiment of this embodiment, the third field is used to indicate the first frequency-domain resource set.

As a sub-embodiment of this embodiment, the third field is used to indicate the Q2 candidate frequency-domain resource sets.

As a sub-embodiment of this embodiment, the third field is used to indicate time-domain resources respectively occupied by the first signal and the Q2 first-type signals.

As a sub-embodiment of this embodiment, the third field is used to indicate HARQ process numbers respectively used by the first signal and the Q2 first-type signals.

As a sub-embodiment of this embodiment, the third field is used to indicate RV process numbers respectively adopted by the first signal and the Q2 first-type signals.

As a sub-embodiment of this embodiment, the third field is used to indicate NDIs corresponding to the first signal and the Q2 first-type signals respectively.

As a sub-embodiment of this embodiment, the third domain includes a Frequency domain resource assignment domain in the DCI.

As a sub-embodiment of this embodiment, the third field includes a Time domain resource assignment field in the DCI.

As a sub-embodiment of this embodiment, the third domain includes the Modulation and coding scheme domain in the DCI.

As a sub-embodiment of this embodiment, the third field includes the New data indicator field in the DCI.

As a sub-embodiment of this embodiment, the third field includes a Redundancy version field in the DCI.

As a sub-embodiment of this embodiment, the third field includes the HARQ process number field in the DCI.

As a sub-embodiment of this embodiment, the third field includes a Transmission configuration indication field in the DCI.

As an embodiment, the first signaling includes a positive integer number of first-type fields, and the number of the first-type fields included in the first signaling The quantity is related to the first quantity value.

As a sub-embodiment of this embodiment, the number of fields of the first type included in the first signaling is linearly related to the first number.

As a sub-embodiment of this embodiment, the number of fields of the first type included in the first signaling is proportional to the first number.

As a sub-embodiment of this embodiment, the number of fields of the first type included in the first signaling is equal to the first number.

As a sub-embodiment of this embodiment, the first signaling includes one of a positive integer number of first-type fields indicating the first frequency-domain resource set.

As a sub-embodiment of this embodiment, the first signaling includes that Q2 first-type fields among the positive integer number of first-type fields are respectively used to indicate the Q2 candidate frequency-domain resource sets.

As a sub-embodiment of this embodiment, the first signaling includes (Q2+1) first-type fields among a positive integer number of first-type fields that are used to indicate the first signal and the Q2 The time-domain resources occupied by the first-type signals respectively.

As a sub-embodiment of this embodiment, the first signaling includes (Q2+1) first-type fields among a positive integer number of first-type fields that are used to indicate the first signal and the Q2 The HARQ process numbers used by the first type signals respectively.

As a sub-embodiment of this embodiment, the first signaling includes (Q2+1) first-type fields among a positive integer number of first-type fields that are used to indicate the first signal and the Q2 The RV process numbers used by the first type signals respectively.

As a sub-embodiment of this embodiment, the first signaling includes (Q2+1) first-type fields among a positive integer number of first-type fields that are used to indicate the first signal and the Q2 The NDIs corresponding to the first type signals respectively.

As a sub-embodiment of this embodiment, the first type of domain includes a Frequency domain resource assignment domain in the DCI.

As a sub-embodiment of this embodiment, the first type of domain includes a Time domain resource assignment domain in the DCI.

As a sub-embodiment of this embodiment, the first type of domain includes the Modulation and coding scheme domain in the DCI.

As a sub-embodiment of this embodiment, the first type of field includes the New data indicator field in the DCI.

As a sub-embodiment of this embodiment, the first type of field includes a Redundancy version field in the DCI.

As a sub-embodiment of this embodiment, the first type of field includes the HARQ process number field in the DCI.

As a sub-embodiment of this embodiment, the first type of field includes a Transmission configuration indication field in the DCI.

As an embodiment, the total payload included in the first signaling is related to the first quantity value.

As an embodiment, any first-type signal among the Q2 first-type signals is a same-type signal as the first signal.

As an embodiment, any first-type signal among the Q2 first-type signals occupies a same type of physical layer channel as the first signal.

As an embodiment, any first-type signal among the Q2 first-type signals occupies a same type of transmission channel as the first signal.

As an embodiment, the transmission channel occupied by any one of the Q2 first-type signals includes DL-SCH.

As an embodiment, the step S50 is located after the step S11 in the fifth embodiment.

As an embodiment, the step S60 is located after the step S21 in the fifth embodiment.

As an embodiment, the step S50 is located after the step S31 in the sixth embodiment.

As an embodiment, the step S60 is located after the step S41 in the sixth embodiment.

As an embodiment, the step S50 is performed simultaneously with the step S11 in the fifth embodiment.

As an embodiment, the step S60 is performed simultaneously with the step S21 in the fifth embodiment.

As an embodiment, the step S50 is performed simultaneously with the step S31 in the sixth embodiment.

As an embodiment, the step S60 is performed simultaneously with the step S41 in the sixth embodiment.

Example 8

Embodiment 8 illustrates another flow chart of Q2 first-type signals, as shown in FIG. 8 . In accompanying drawing 8, the first node U7 and The second nodes N8 communicate through wireless links. It is particularly noted that the sequence in this embodiment does not limit the signal transmission sequence and implementation sequence in this application. In the case of no conflict, the embodiments, sub-embodiments and subsidiary embodiments in Embodiment 8 can be applied to any embodiment in Embodiment 5, 6 or 7; otherwise, in the case of no conflict, Any of the embodiments, sub-embodiments, and sub-embodiments in Embodiment 5, 6, or 7 can be applied to Embodiment 8.

For the first node U7 , in step S70, Q2 first-type signals are respectively sent in the Q2 candidate frequency domain resource sets.

For the second node N8 , in step S80, Q2 first-type signals are respectively received in the Q2 candidate frequency domain resource sets.

In Embodiment 8, the first signaling is used to determine the Q2 candidate frequency domain resource sets, and the Q2 is a positive integer; the first cell set includes Q1 serving cells, and the Q1 is greater than 1 A positive integer; the Q2 is smaller than the Q1; the Q2 candidate frequency domain resource sets respectively belong to the Q2 candidate bandwidth parts, and the Q2 candidate bandwidth parts respectively belong to the Q2 serving cells in the Q1 serving cells; The Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells are fixed, or the Q2 first-class identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells A class of identities is configurable.

As an embodiment, the transmission channel occupied by any one of the Q2 first-type signals includes a UL-SCH.

As an embodiment, the step S70 is located after the step S11 in the fifth embodiment.

As an embodiment, the step S80 is located after the step S21 in the fifth embodiment.

As an embodiment, the step S70 is located after the step S31 in the sixth embodiment.

As an embodiment, the step S80 is located after the step S41 in the sixth embodiment.

As an embodiment, the step S70 is performed simultaneously with the step S11 in the fifth embodiment.

As an embodiment, the step S80 is performed simultaneously with the step S21 in the fifth embodiment.

As an embodiment, the step S70 is performed simultaneously with the step S31 in the sixth embodiment.

As an embodiment, the step S80 is performed simultaneously with the step S41 in the sixth embodiment.

Example 9

Embodiment 9 illustrates a schematic diagram of a first cell, as shown in FIG. 9 . In accompanying drawing 9, described first cell comprises K1 candidate bandwidth part, and described K1 is equal to 4, and described K1 candidate bandwidth part is the first candidate bandwidth part, the second candidate bandwidth part, the third candidate bandwidth part respectively and a fourth candidate bandwidth portion.

As an embodiment, the four BWP-Ids corresponding to the first candidate bandwidth part, the second candidate bandwidth part, the third candidate bandwidth part and the fourth candidate bandwidth part increase sequentially.

As an embodiment, the four BWP-Ids corresponding to the first candidate bandwidth part, the second candidate bandwidth part, the third candidate bandwidth part and the fourth candidate bandwidth part decrease in sequence.

As an embodiment, the first bandwidth part in this application is the first candidate bandwidth part.

As an embodiment, the second bandwidth part in this application is one of the second candidate bandwidth part, the third candidate bandwidth part, or the fourth candidate bandwidth part.

As an embodiment, the first candidate bandwidth part includes initialDownlinkBWP.

As an embodiment, the first candidate bandwidth part includes initialUplinkBWP.

As an embodiment, the BWP-Id used by the first candidate bandwidth part includes firstActiveDownlinkBWP-Id.

As an embodiment, the BWP-Id used by the first candidate bandwidth part includes defaultDownlinkBWP-Id.

As an embodiment, the BWP-Id used by the first candidate bandwidth part includes firstActiveUplinkBWP-Id.

As an embodiment, the BWP-Id used by the first candidate bandwidth part includes defaultUplinkBWP-Id.

As an embodiment, the frequency bandwidth occupied by the first candidate bandwidth part, the frequency bandwidth occupied by the second candidate bandwidth part, the frequency bandwidth occupied by the third candidate bandwidth part and the fourth candidate bandwidth The bandwidths occupied by all parts are the same.

As an embodiment, at least two of the first candidate bandwidth part, the second candidate bandwidth part, the third candidate bandwidth part and the fourth candidate bandwidth part occupy different frequency bandwidths.

Example 10

Embodiment 10 illustrates a schematic diagram of a first set of cells, as shown in FIG. 10 . In Figure 10, the first set of cells includes Q1 serving cells, where Q1 is a positive integer greater than 1; any serving cell in the Q1 serving cells includes a positive integer number of bandwidth parts, and the Q1 Each serving cell includes the Q1 candidate bandwidth parts respectively; the target bandwidth part in this application are the candidate bandwidth parts belonging to the first cell among the Q1 candidate bandwidth parts; the Q2 candidate bandwidth parts in this application are the candidate bandwidth parts belonging to the Q1 serving cells respectively among the Q1 candidate bandwidth parts The Q2 candidate bandwidth parts in the Q2 serving cells; the thick rectangular box in the figure identifies one serving cell in the Q1 serving cells, and the rectangular grid filled with oblique lines in the figure corresponds to the Q1 candidate bandwidths A candidate bandwidth section in the section.

As an embodiment, the Q1 identities corresponding to the Q1 candidate bandwidth parts in the Q1 serving cells are fixed.

As a sub-embodiment of this embodiment, the Q1 identities are Q1 BWP-Ids respectively.

As a sub-embodiment of this embodiment, the Q1 identities are all equal to 0.

As a sub-embodiment of this embodiment, the Q1 identities are all equal to 3.

As a sub-embodiment of this embodiment, the Q1 identities are all equal to 0.

As an embodiment, the Q1 identities corresponding to the Q1 candidate bandwidth parts in the Q1 serving cells are configurable.

As a sub-embodiment of this embodiment, the Q1 identities are configured through RRC signaling.

As a sub-embodiment of this embodiment, the Q1 identities are indicated by MAC CE.

Example 11

Embodiment 11 illustrates a schematic diagram of the first signaling, as shown in FIG. 11 . In FIG. 11, the first signaling includes a third field, and the third field included in the first signaling includes W1 subfields, and W1 is equal to the sum of Q2 and 1 in this application, so The W1 subfields included in the third field are respectively used to indicate the first signal and the Q2 first type signals.

As an embodiment, the W1 subfields include the same number of bits.

As an embodiment, the W1 subfields are respectively used to indicate the time domain resources respectively occupied by the first signal and the Q2 first type signals.

As an embodiment, the W1 subfields are respectively used to indicate HARQ process numbers respectively used by the first signal and the Q2 first-type signals.

As an embodiment, the W1 subfields are respectively used to indicate RV process numbers respectively adopted by the first signal and the Q2 first-type signals.

As an embodiment, the W1 subfields are used to indicate NDIs respectively corresponding to the first signal and the Q2 first-type signals.

As an embodiment, the value of W1 is related to the first field included in the first signaling.

As an embodiment, the value of W1 is related to the number of serving cells indicated by the first field included in the first signaling.

Example 12

Embodiment 12 illustrates another schematic diagram of the first signaling, as shown in FIG. 12 . In Figure 12, the first signaling includes W1 first-type domains, the W1 is equal to the sum of Q2 and 1 in this application, and the W1 first-type domains included in the third domain are respectively used to indicate the first signal and the Q2 first-type signals.

As an embodiment, the W1 first-type fields include the same number of bits.

As an embodiment, the W1 first-type fields are respectively used to indicate time-domain resources respectively occupied by the first signal and the Q2 first-type signals.

As an embodiment, the W1 first-type fields are respectively used to indicate HARQ process numbers respectively used by the first signal and the Q2 first-type signals.

As an embodiment, the W1 first-type fields are respectively used to indicate RV process numbers respectively adopted by the first signal and the Q2 first-type signals.

As an embodiment, the W1 first-type fields are respectively used to indicate NDIs corresponding to the first signal and the Q2 first-type signals.

Example 13

Embodiment 13 illustrates a structural block diagram of a first node, as shown in FIG. 13 . In FIG. 13 , a first node 1300 includes a first receiver 1301 and a first transceiver 1302 .

The first receiver 1301 receives a first information block and receives first signaling, the first information block is used to determine a first cell set, and the first signaling is used to indicate a first frequency domain resource set, The first set of cells includes a plurality of serving cells;

The first transceiver 1302 is configured to receive a first signal in the first frequency domain resource set, or send a first signal in the first frequency domain resource set;

In Embodiment 13, the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is the K1 One of the candidate bandwidth parts; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth part from the K1 candidate bandwidth parts; The operation is receive, or the operation is send.

As an embodiment, when the first cell belongs to the first cell set, the target bandwidth part is the first bandwidth part among the K1 candidate bandwidth parts; when the first cell does not belong to the When the first cell is set, the target bandwidth part is the second bandwidth part among the K1 candidate bandwidth parts; the first bandwidth part is irrelevant to the second bandwidth part.

As an embodiment, all the serving cells included in the first set of cells can be scheduled by the same downlink control information.

As an example, include:

The first transceiver 1302 respectively receives Q2 first-type signals in Q2 candidate frequency domain resource sets;

As an example, include:

The first transceiver 1302 sends Q2 first-type signals respectively in Q2 candidate frequency domain resource sets;

As an embodiment, the Q2 candidate bandwidth parts and the target bandwidth part all use the first subcarrier spacing.

As an embodiment, the first signaling includes a first field, and the first field included in the first signaling is used to determine the first cell and the Q2 serving cells.

As an embodiment, the first set of cells includes Q1 serving cells, the Q1 serving cells respectively correspond to Q1 scheduling indicator values, and the Q1 scheduling indicator values are all the same.

As an embodiment, at least one of the number of bits included in at least one field carried by the first signaling or the number of fields included in the first signaling is related to the first quantity value , the first quantity is equal to the sum of Q2 and 1.

As an embodiment, the first receiver 1301 includes at least the first four of the antenna 452 , receiver 454 , multi-antenna receiving processor 458 , receiving processor 456 , and controller/processor 459 in Embodiment 4.

As an embodiment, the first transceiver 1302 includes the antenna 452, the receiver 454, the transmitter 454, the multi-antenna transmission processor 457, the transmission processor 468, the multi-antenna reception processor 458, the reception processing At least the first six of the controller 456 and the controller/processor 459.

Example 14

Embodiment 14 illustrates a structural block diagram of a second node, as shown in FIG. 14 . In FIG. 14 , the second node 1400 includes a first transmitter 1401 and a second transceiver 1402 .

The first transmitter 1401 sends a first information block and sends first signaling, where the first information block is used to determine a first cell set, and where the first signaling is used to indicate a first frequency domain resource set, The first set of cells includes a plurality of serving cells;

The second transceiver 1402 is configured to send a first signal in the first frequency domain resource set, or receive a first signal in the first frequency domain resource set;

In Embodiment 14, the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the The first cell includes K1 candidate bandwidth parts, and the target bandwidth part is one of the K1 candidate bandwidth parts; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell A set is used to determine the target bandwidth portion from the K1 candidate bandwidth portions; the performing is sending, or the performing is receiving.

As an example, include:

The second transceiver 1402 sends Q2 first-type signals respectively in Q2 candidate frequency domain resource sets;

As an example, include:

The second transceiver 1402 respectively receives Q2 first-type signals in Q2 candidate frequency domain resource sets;

As an embodiment, the first transmitter 1401 includes at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 414, and the controller/processor 475 in Embodiment 4.

As an embodiment, the second transceiver 1402 includes the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, the transmitter 418, the multi-antenna transmitting processor 471, the transmitting processing At least the first 6 of the controller 414 and the controller/processor 475.

Those skilled in the art can understand that all or part of the steps in the above method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the foregoing embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above-mentioned embodiments may be implemented in the form of hardware, or may be implemented in the form of software function modules, and the present application is not limited to any specific combination of software and hardware. The first node in this application includes but is not limited to mobile phones, tablet computers, notebooks, network cards, low-power devices, eMTC devices, NB-IoT devices, vehicle communication devices, vehicles, vehicles, RSUs, aircrafts, airplanes, wireless Man-machine, remote control aircraft and other wireless communication equipment. The second node in this application includes but not limited to macrocell base station, microcell base station, small cell base station, home base station, relay base station, eNB, gNB, transmission and receiving node TRP, GNSS, relay satellite, satellite base station, aerial base station , RSU, unmanned aerial vehicles, test equipment, such as transceiver devices or signaling testers that simulate some functions of base stations, and other wireless communication equipment.

Those skilled in the art will appreciate that the present invention may be embodied in other specified forms without departing from its core or essential characteristics. Therefore, the presently disclosed embodiments are to be regarded as descriptive rather than restrictive in any way. The scope of the invention is determined by the appended claims rather than the foregoing description, and all changes within their equivalent meaning and range are deemed to be embraced therein.

Claims

A first node used for wireless communication, characterized by comprising:

The first receiver receives the first information block and receives the first signaling, the first information block is used to determine the first cell set, the first signaling is used to indicate the first frequency domain resource set, the The first set of cells includes a plurality of serving cells;

a first transceiver operating on a first signal in the first set of frequency domain resources;

Wherein, the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is the K1 candidate bandwidth parts One of them; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth part from the K1 candidate bandwidth parts; the operation is a receive, or the operation is a send.
The first node according to claim 1, wherein when the first cell belongs to the first cell set, the target bandwidth part is the first bandwidth part among the K1 candidate bandwidth parts; When the first cell does not belong to the first cell set, the target bandwidth part is the second bandwidth part among the K1 candidate bandwidth parts; the first bandwidth part is irrelevant to the second bandwidth part .
The first node according to claim 1 or 2, wherein all the serving cells included in the first set of cells can be scheduled by the same downlink control information.
The first node according to any one of claims 1 to 3, characterized in that it comprises:

The first transceiver operates Q2 first-type signals in Q2 candidate frequency domain resource sets respectively;

Wherein, the first signaling is used to determine the Q2 candidate frequency domain resource sets, and the Q2 is a positive integer; the first cell set includes Q1 serving cells, and the Q1 is a positive integer greater than 1; The Q2 is smaller than the Q1; the Q2 candidate frequency domain resource sets respectively belong to the Q2 candidate bandwidth parts, and the Q2 candidate bandwidth parts respectively belong to the Q2 serving cells in the Q1 serving cells; the Q2 The Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells are fixed, or the Q2 first-type identities corresponding to the Q2 candidate bandwidth parts in the Q2 serving cells is configurable.
The first node according to claim 4, wherein the first subcarrier spacing is used for the Q2 candidate bandwidth parts and the target bandwidth part.
The first node according to claim 4 or 5, wherein the first signaling includes a first field, and the first field included in the first signaling is used to obtain from the Q1 The first cell and the Q2 serving cells are determined among the serving cells.
The first node according to any one of claims 1 to 6, wherein the first set of cells includes Q1 serving cells, and the Q1 serving cells correspond to Q1 scheduling indication values respectively, and the The Q1 schedule indication values are all the same.
The first node according to any one of claims 4 to 7, wherein the number of bits included in at least one field carried in the first signaling or the number of bits included in the first signaling At least one of the two numbers of domains is related to a first number value equal to the sum of Q2 and one.
A second node used for wireless communication, characterized by comprising:

The first transmitter sends a first information block and sends first signaling, where the first information block is used to determine a first cell set, and where the first signaling is used to indicate a first frequency domain resource set, so The first set of cells includes a plurality of serving cells;

a second transceiver, performing a first signal in the first set of frequency domain resources;

Wherein, the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is the K1 candidate bandwidth parts One of them; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth part from the K1 candidate bandwidth parts; the execution is a send, or the execution is a receive.
A method for being used by a first node of wireless communication, comprising:

receiving a first information block and receiving first signaling, the first information block is used to determine a first set of cells, the first signaling is used to indicate a first set of frequency domain resources, and the first set of cells Including multiple serving cells;

operating a first signal in the first set of frequency domain resources;

Wherein, the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is the K1 candidate bandwidth parts One of them; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth part from the K1 candidate bandwidth parts; the operation is a receive, or the operation is a send.
A method used in a second node for wireless communication, comprising:

Sending a first information block and sending first signaling, the first information block is used to determine a first set of cells, the first signaling is used to indicate a first set of frequency domain resources, and the first set of cells Including multiple serving cells;

performing a first signal in the first set of frequency domain resources;

Wherein, the first frequency domain resource set occupies a target bandwidth part, and the target bandwidth part belongs to the first cell; the first cell includes K1 candidate bandwidth parts, and the target bandwidth part is the K1 candidate bandwidth parts One of them; the K1 is a positive integer greater than 1; whether the first cell belongs to the first cell set is used to determine the target bandwidth part from the K1 candidate bandwidth parts; the execution is a send, or the execution is a receive.