CN114079551A

CN114079551A - Method and apparatus in a node used for wireless communication

Info

Publication number: CN114079551A
Application number: CN202010826835.8A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2022-02-22

Abstract

The invention discloses a method and an apparatus in a node used for wireless communication. A first node generates first information, wherein the first information indicates the cache state of a first service cell group; transmitting the first information through the first serving cell group when the first serving cell group is in an active state; transmitting the first information through the second serving cell group when the first serving cell group is in an inactive state; wherein the first serving cell group and the second serving cell group are SCG and MCG, respectively. The method and the device activate the first cell group by timely sending the cache state through the MCG in the active state, so that the waiting time delay of data transmission on the SCG of the first service cell group is reduced.

Description

Method and apparatus in a node used for wireless communication

Technical Field

The present application relates to transmission methods and apparatus in wireless communication systems, and more particularly, to multicast and broadcast related transmission schemes and apparatus in wireless communication.

Background

In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of various application scenarios, research on New Radio interface (NR) technology (or fine Generation, 5G) is decided over 72 sessions of 3GPP (3rd Generation Partner Project) RAN (Radio Access Network), and standardization Work on NR is started over WI (Work Item) where NR passes through 75 sessions of 3GPP RAN.

The dual connectivity is one of the characteristics of NR, and the UE can effectively improve the data transmission rate and the reliability of the connection by simultaneously connecting and communicating with two serving cell groups. The two serving cell groups are MCG and SCG, respectively. Generally, SCGs serve as load sharing.

Work Item (WI) passed through the Further Multi-RAT Dual-Connectivity enhancements at 3GPP RAN #86 subcontract, one of which is to study methods of SCG deactivation and activation. For example, when the SCG is not transmitting data, the SCG may be deactivated; correspondingly, after the SCG is deactivated, the user does not need to monitor the downlink control channel of the SCG, thereby saving the energy consumption of the UE.

Disclosure of Invention

The inventor finds out through research that after the SCG is deactivated, there is no scheme for activating the SCG when the UE has uplink data to be transmitted.

In view of the above, the present application discloses a solution. It should be noted that, although the above description uses the scenario of communication between the network device and the terminal device as an example, the present application is also applicable to other communication scenarios (for example, the scenario of terminal-to-terminal communication), and achieves similar technical effects. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to scenarios of communication between network devices and terminals and terminal-to-terminal communication) also helps to reduce hardware complexity and cost. Without conflict, embodiments and features in embodiments in a first node of the present application may be applied to a second node and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

As an example, the term (telematics) in the present application is explained with reference to the definition of the specification protocol TS36 series of 3 GPP.

As an example, the terms in the present application are explained with reference to the definitions of the 3GPP specification protocol TS38 series.

As an example, the terms in the present application are explained with reference to the definitions of the 3GPP specification protocol TS37 series.

As an example, the terms in the present application are explained with reference to the definition of the specification protocol of IEEE (Institute of Electrical and Electronics Engineers).

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

generating first information indicating a cache state of a first serving cell group;

transmitting the first information through the first serving cell group when the first serving cell group is in an active state; transmitting the first information through the second serving cell group when the first serving cell group is in an inactive state;

wherein the first serving cell group and the second serving cell group are SCG and MCG, respectively.

As an embodiment, the first information is generated when there is data to be transmitted in the first MAC entity.

As one embodiment, the first MAC entity corresponds to an RB between the first node to the first serving cell group.

As an embodiment, the first MAC entity corresponds to a first serving cell group.

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

As an embodiment, the first information is transmitted through a MAC CE (Control Element).

As one embodiment, the phrase that the first group of serving cells is in an active state comprises: monitoring control signaling for the first group of serving cells.

As one embodiment, the phrase that the first group of serving cells is in an inactive state includes: ceasing monitoring control signaling for the first serving cell group.

As a sub-embodiment of the foregoing embodiment, the control signaling of the first serving cell group includes at least one of DCI, MAC CE, and RRC signaling.

As a sub-embodiment of the above embodiment, the phrase monitoring control signaling of the first group of serving cells comprises: monitoring (Monitor) control signaling of the first serving cell group.

As a sub-embodiment of the above embodiment, the phrase monitoring control signaling of the first group of serving cells comprises: and detecting whether the control signaling exists on a channel occupied by the control signaling of the first service cell group.

As a sub-embodiment of the above embodiment, the monitoring comprises blind detection.

As a sub-embodiment of the above embodiment, the monitoring comprises coherent detection of the signature sequence.

As a sub-embodiment of the above embodiment, the monitoring includes a CRC (Cyclic Redundancy Check) Check.

As an embodiment, the first information sent by the second serving cell group is received by a second node; the first information sent by the first serving cell group is received by a third node.

As an embodiment, the third Node comprises an SN (Secondary Node).

As an embodiment, the second Node comprises an MN (Master Node).

Specifically, according to one aspect of the present application, the method described above is characterized by including:

monitoring for first signaling on the second serving cell group; when the first signaling is detected, starting to monitor control signaling of the first serving cell group;

wherein the first serving cell group is in an inactive state; the first information is used to trigger the first signaling.

As one embodiment, the first signaling is used to recover an active state of the first group of serving cells.

As an embodiment, the first group of serving cells is in an active state after the first signaling is detected.

As an embodiment, the first group of serving cells is in an active state after the first signaling is processed.

Specifically, according to an aspect of the present application, the method is characterized by further comprising:

transmitting a second SR on the first serving cell group when the first signaling is not detected in a first time window;

the first receiver receiving second signaling on the first serving cell group, the second signaling indicating configuration information of a second channel;

wherein, the starting position of the first time window depends on the time domain resource occupied by the first information; the first information is used to trigger the second SR.

As an embodiment, the second SR is used to trigger the second signaling.

As an embodiment, the configuration information of the second channel includes an air interface resource occupied by the second channel.

As a sub-embodiment of the foregoing embodiment, the air interface resource occupied by the second channel includes a time domain resource occupied by the second channel.

As a sub-embodiment of the foregoing embodiment, the air interface resource occupied by the second channel includes a frequency domain resource occupied by the second channel.

As a sub-embodiment of the foregoing embodiment, the air interface resource occupied by the second channel includes a multiple access signature occupied by the second channel.

transmitting a first SR on the second serving cell group;

receiving third signaling on the second serving cell group, the third signaling indicating configuration information for a first channel;

wherein the first serving cell group is in an inactive state; the first information is used to trigger the first SR; the first information is transmitted on the first channel; the air interface resource occupied by the first SR is used to determine whether the cache state indicated by the first information is for the first serving cell group or the second serving cell group.

As an embodiment, the first SR is used to trigger the third signaling.

As an embodiment, the configuration information of the first channel includes an air interface resource occupied by the first channel.

As a sub-embodiment of the foregoing embodiment, the air interface resource occupied by the first channel includes a time domain resource occupied by the first channel.

As a sub-embodiment of the foregoing embodiment, the air interface resource occupied by the first channel includes a frequency domain resource occupied by the first channel.

As a sub-embodiment of the foregoing embodiment, the air interface resource occupied by the first channel includes a multiple access signature occupied by the first channel.

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

a first receiver generating first information indicating a buffer status of a first serving cell group;

a first transmitter to transmit the first information through the first serving cell group when the first serving cell group is in an active state; transmitting the first information through the second serving cell group when the first serving cell group is in an inactive state;

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

receiving the first information through the second serving cell group;

wherein the first information indicates a buffer status of a group of first serving cells; the first serving cell group is in an inactive state; the first information is sent over a first serving cell group when the first serving cell group is in an active state; the first serving cell group and the second serving cell group are SCG and MCG, respectively.

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

a second receiver which receives the first information through the second serving cell group;

As an example, the present application has the following advantages: and the MCG in the active state sends the buffer state in time to activate the first cell group, so that the waiting time delay of data transmission on the SCG of the first cell group is reduced.

Drawings

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

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

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

figure 3 shows a schematic diagram of a radio 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 wireless signal transmission flow diagram according to an embodiment of the present application;

FIG. 6 illustrates a wireless signal transmission flow diagram according to yet another embodiment of the present application;

FIG. 7 shows a block diagram of a processing arrangement for use in the first node;

fig. 8 shows a block diagram of a processing means for use in the second node.

Detailed Description

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

Example 1

Embodiment 1 illustrates a processing flow diagram of a first node according to an embodiment of the present application, as shown in fig. 1. In fig. 1, each block represents a step. In particular, the order of steps in blocks does not represent a particular chronological relationship between the various steps.

In embodiment 1, a first node in the present application generates first information in step S101, where the first information indicates a cache state of a first serving cell group; transmitting the first information through the first serving cell group when the first serving cell group is in an active state in step S102; transmitting the first information through a second serving cell group when the first serving cell group is in an inactive state in step S103.

As one embodiment, the first serving cell group includes at least one serving cell.

As one embodiment, the second set of serving cells includes at least one serving cell.

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

As an embodiment, the first information is transmitted through higher layer signaling.

As an embodiment, the first Information is transmitted through UCI (Uplink Control Information).

As an embodiment, the first information is transmitted through a lower layer signaling.

As an embodiment, the first information is transmitted on a PUSCH (Physical Uplink Shared Channel).

As an embodiment, the first information is transmitted on a PUCCH (Physical Uplink Control Channel).

As an embodiment, the first information includes a first logical channel group identity and a first buffer size, where the first buffer size indicates a data amount of available data of a logical channel group identified by the first logical channel group identity; the first logical channel group identity is assigned to the first serving cell group.

As one embodiment, the first information indicates that there is data to be transmitted for at least one cell in a first group of serving cells.

As one embodiment, the first information indicates that there is uplink data to be transmitted for at least one cell in a first group of serving cells.

As one embodiment, the first information indicates that there is data to transmit for any cell in a first group of serving cells.

As one embodiment, the first information indicates that there is uplink data to be transmitted for any cell in a first group of serving cells.

As one embodiment, the first information indicates that there is data to be transmitted for a first serving cell group.

As one embodiment, the first information indicates that there is uplink data to be transmitted for a first serving cell group.

As one embodiment, the phrase that the first group of serving cells is in an active state comprises: and transmitting uplink data through the first serving cell group.

As one embodiment, the phrase that the first group of serving cells is in an active state comprises: and receiving downlink data through the first serving cell group.

As one embodiment, the phrase that the first group of serving cells is in an active state comprises: monitoring control signaling of any cell in the first set of serving cells.

As one embodiment, the phrase that the first group of serving cells is in an active state comprises: monitoring control signaling of a primary cell in the first group of serving cells.

As one embodiment, the phrase that the first group of serving cells is in an active state comprises: and sending uplink data through any cell in the first service cell group.

As one embodiment, the phrase that the first group of serving cells is in an active state comprises: and receiving downlink data through any cell in the first service cell group.

As one embodiment, the phrase that the first group of serving cells is in an inactive state includes: stopping transmitting uplink data through the first serving cell group.

As one embodiment, the phrase that the first group of serving cells is in an inactive state includes: stopping receiving downlink data through the first serving cell group.

As one embodiment, the phrase that the first group of serving cells is in an inactive state includes: performing measurements only for any cell in the first set of serving cells.

As one embodiment, the phrase that the first group of serving cells is in an inactive state includes: performing measurements only for primary cells in the first serving cell group.

As one embodiment, the phrase that the first group of serving cells is in an inactive state includes: monitoring control signaling of only a primary cell of the first serving cell group, performing only measurements on remaining serving cells of the first serving cell group.

As an embodiment, the first serving cell group is an SCG and the primary cell of the first serving cell group is a PSCell.

As a sub-embodiment of the above embodiment, the phrase monitoring control signaling of a primary cell of the first group of serving cells comprises: and detecting whether the control signaling exists on a channel occupied by the control signaling of the main cell of the first service cell group.

As a sub-embodiment of the above embodiment, the control signaling of the primary cell of the first serving cell group includes at least one of DCI, MAC CE, and RRC signaling.

As an embodiment, the first information sent by the second serving cell group is received by a second node.

As an embodiment, the first information sent by the first serving cell group is received by a third node.

As an embodiment, the third Node comprises an SN (Secondary Node).

As an embodiment, the second Node comprises an MN (Master Node).

As one embodiment, the phrase sending the first information over the second serving cell group comprises: and sending the first information through the time-frequency resource configured by the second service cell group.

As one embodiment, the phrase sending the first information over the second serving cell group comprises: and sending the first information through the MAC entity corresponding to the second service cell group.

As one embodiment, the phrase sending the first information over the second serving cell group comprises: the first information is scrambled by a user identity allocated by the second serving cell group.

As one embodiment, the phrase sending the first information over the second serving cell group comprises: the first information is scrambled by a cell identity of any serving cell in the second set of serving cells.

As an embodiment, the user identity allocated by the second serving cell group is C-RNTI (cell RNTI).

As an embodiment, the user identity allocated by the second serving cell group comprises a number of bits which is a positive integer multiple of 8.

As one embodiment, the phrase sending the first information over the first serving cell group comprises: and sending the first information through the time-frequency resources configured by the first service cell group.

As one embodiment, the phrase sending the first information over the second serving cell group comprises: and sending the first information through a MAC entity corresponding to the first service cell group.

As one embodiment, the phrase sending the first information over the first serving cell group comprises: the first information is scrambled by a user identity allocated by the first serving cell group.

As one embodiment, the phrase sending the first information over the first serving cell group comprises: the first information is scrambled by a cell identity of any serving cell in the first set of serving cells.

As an embodiment, the user identity allocated by the first serving cell group is a C-RNTI (cell RNTI).

As an embodiment, the user identity of the first serving cell group allocation comprises a number of bits that is a positive integer multiple of 8.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2. Fig. 2 illustrates a diagram of a network architecture 200 for 5G NR, LTE (Long-Term Evolution), and LTE-a (Long-Term Evolution-enhanced) systems. The 5G NR or LTE network architecture 200 may be referred to as a 5GS (5G System )/EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS/EPS 200 may include one or more UEs (User Equipment) 201, NG-RANs (next generation radio access networks) 202, 5 GCs (5G Core networks )/EPCs (Evolved Packet cores) 210, HSS (Home Subscriber Server)/UDMs (Unified Data Management) 220, and internet services 230. The 5GS/EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the 5GS/EPS provides packet switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit switched services or other cellular networks. The NG-RAN includes NR node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (transmitting receiving node), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5GC/EPC 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a drone, an aircraft, a narrowband internet of things device, a machine type communication device, a terrestrial vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5GC/EPC210 through an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management domain)/SMF (Session Management Function) 211, other MME/AMF/SMF214, S-GW (serving Gateway)/UPF (User Plane Function) 212, and P-GW (Packet data Network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC 210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet protocol) packets are transported through the S-GW/UPF212, which S-GW/UPF212 itself is connected to the P-GW/UPF 213. The P-GW provides UE IP address allocation as well as other functions. The P-GW/UPF213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a packet-switched streaming service.

As an embodiment, the UE201 and the gNB203 are connected through a Uu interface.

As an embodiment, the gNB204 and the gNB203 are connected through an Xn interface.

As an embodiment, the gNB204 and the gNB203 are connected through an X2 interface.

As an embodiment, the radio link from the UE201 to the NR node B is an uplink.

As an embodiment, the radio link from the NR node B to the UE201 is the downlink.

As an embodiment, the first node, the second node, and the third node in this application are the UE201, the gNB203, and the gNB204, respectively.

As an embodiment, the UE201 supports sidelink transmission.

As an embodiment, the UE201 supports a PC5 interface.

As an embodiment, the UE201 supports the Uu interface.

As an embodiment, the UE201 supports relay transmission.

As an embodiment, the gNB203 supports the Uu interface.

As an example, the gNB203 supports Integrated Access and Backhaul (IAB).

As an example, the gNB203 is a macro cellular (MarcoCellular) base station.

As an embodiment, the gNB203 is a Micro Cell (Micro Cell) base station.

As an embodiment, the gNB203 is a pico cell (PicoCell) base station.

As an embodiment, the gNB203 is a home base station (Femtocell).

As an embodiment, the gNB203 is a base station device supporting a large delay difference.

As an example, the gNB203 is a flight platform device.

As an embodiment, the gNB203 is a satellite device.

As an embodiment, the gNB204 supports the Uu interface.

As an example, the gNB204 supports Integrated Access and Backhaul (IAB).

As one example, the gNB204 is a macro cellular (MarcoCellular) base station.

As an embodiment, the gNB204 is a Micro Cell (Micro Cell) base station.

As an embodiment, the gNB204 is a pico cell (PicoCell) base station.

As an embodiment, the gNB204 is a home base station (Femtocell).

As an embodiment, the gNB204 is a base station device supporting large delay difference.

As an example, the gNB204 is a flight platform device.

As one embodiment, the gNB204 is a satellite device.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture for the first node (RSU in UE or V2X, car equipment or car communication module) and the second node (gNB, RSU in UE or V2X, car equipment or car communication module) or the control plane 300 between two UEs in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above the PHY301, and is responsible for the links between the first and second nodes and the two UEs through the PHY 301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node. The PDCP sublayer 304 provides data ciphering and integrity protection, and the PDCP sublayer 304 also provides handover support for a second node by a first node. The RLC sublayer 303 provides segmentation and reassembly of packets, retransmission of missing packets by ARQ, and the RLC sublayer 303 also provides duplicate packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell between the first nodes. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3) in the Control plane 300 is responsible for obtaining Radio resources (i.e., Radio bearers) and configuring the lower layers using RRC signaling between the second node and the first node. The radio protocol architecture of the user plane 350 includes layer 1(L1 layer) and layer 2(L2 layer), the radio protocol architecture in the user plane 350 for the first and second nodes is substantially the same for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes an SDAP (Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support diversity of services. Although not shown, the first node may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.).

As an embodiment, the entities of the multiple sub-layers of the control plane in fig. 3 constitute an SRB (Signaling Radio bearer) in the vertical direction.

As an embodiment, entities of the plurality of sublayers of the control plane in fig. 3 constitute a DRB (Data Radio bearer) in a vertical direction.

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

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

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

As an example, the

L2 layer

305 or 355 belongs to a higher layer.

As an embodiment, the RRC sublayer 306 in the L3 layer belongs to a higher layer.

As an example, the PDCP sublayer 354 belongs to a higher layer.

As an example, the SDAP sublayer 356 belongs to higher layers.

As an example, the L3 level belongs to a higher layer.

As an embodiment, the behavior generation first information in the present application is performed in the MAC sublayer 302 or 352.

As an embodiment, the first SR in this application is generated in the PHY301 or 351.

As an embodiment, the first SR in this application is generated in the MAC sublayer 302 or 352.

As an embodiment, the second SR in this application is generated in the PHY301 or 351.

As an embodiment, the second SR in this application is generated in the MAC sublayer 302 or 352.

As an embodiment, the first signaling in this application is generated in the RRC 306.

As an embodiment, the second signaling in this application is generated in the RRC 306.

As an embodiment, the second signaling in this application is generated in the PHY301 or 351.

As an embodiment, the second signaling in this application is generated in the MAC sublayer 302 or 352.

As an embodiment, the third signaling in this application is generated in the RRC 306.

As an embodiment, the third signaling in this application is generated in the PHY301 or 351.

As an embodiment, the third signaling in this application is generated in the MAC sublayer 302 or 352.

As an embodiment, the fourth signaling in this application is generated in the RRC 306.

As an embodiment, the fifth signaling in this application is generated in the RRC 306.

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 410 and a second communication device 450 communicating with each other in an access network.

The first communications device 410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multiple antenna receive processor 472, a multiple antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

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

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

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

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

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

As an embodiment, the first communication device 410 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The first communication device 410 means at least: generating first information indicating a cache state of a first serving cell group; transmitting the first information through the first serving cell group when the first serving cell group is in an active state; transmitting the first information through the second serving cell group when the first serving cell group is in an inactive state; wherein the first serving cell group and the second serving cell group are SCG and MCG, respectively.

As an embodiment, the first communication device 410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: generating first information indicating a cache state of a first serving cell group; transmitting the first information through the first serving cell group when the first serving cell group is in an active state; transmitting the first information through the second serving cell group when the first serving cell group is in an inactive state; wherein the first serving cell group and the second serving cell group are SCG and MCG, respectively.

As an embodiment, the second communication device 450 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 450 apparatus at least: receiving the first information through the second serving cell group; wherein the first information indicates a buffer status of a group of first serving cells; the first serving cell group is in an inactive state; the first information is sent over a first serving cell group when the first serving cell group is in an active state; the first serving cell group and the second serving cell group are SCG and MCG, respectively.

As an embodiment, the second communication device 450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving the first information through the second serving cell group; wherein the first information indicates a buffer status of a group of first serving cells; the first serving cell group is in an inactive state; the first information is sent over a first serving cell group when the first serving cell group is in an active state; the first serving cell group and the second serving cell group are SCG and MCG, respectively.

For one embodiment, the first communication device 410 corresponds to a first node in the present application.

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

As an embodiment, the first node in this application includes the first communication device 410, and the second node in this application includes the second communication device 450.

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

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

For one embodiment, the first communication device 410 is a gNB.

For one embodiment, the second communication device 450 is a gNB.

Example 5

Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 5. In fig. 5, the order of the steps in the blocks does not represent a specific chronological relationship between the individual steps. In fig. 5, the steps in the dotted line box F1 and the dotted line box F2 are optional.

For theFirst node U1Generating first information indicating a buffering state of the first serving cell group in step S5101; while the first serving cell group is in an active state, in stepStep S5102 sends the first information through the first serving cell group; transmitting the first information through the second serving cell group in step S5103 when the first serving cell group is in an inactive state; monitoring for first signaling on the second serving cell group in step S5104; when the first signaling is detected, starting to monitor control signaling of the first serving cell group in step S5105; when the first signaling is not detected in a first time window, sending a second SR on the first serving cell group in step S5106; receiving second signaling on the first serving cell group in step S5107, the second signaling indicating configuration information of a second channel; transmitting the first information on the second channel in step S5108;

for theSecond node U2Receiving the first information in step S5201; transmitting a first signaling in step S5202;

for theThird node U3Receiving a second SR in step S5301; transmitting the second signaling in step S5302; receiving the first information through the second channel in step S5303;

wherein the first serving cell group and the second serving cell group are SCG and MCG, respectively; the first information is used to trigger the first signaling; the starting position of the first time window depends on the time domain resource occupied by the first information; the first information is used to trigger the second SR.

As an embodiment, the first serving cell is in an inactive state before the first signaling is detected.

As one embodiment, the first signaling is used to activate the first serving cell group.

As one embodiment, the first signaling indicates to resume an active state of the first serving cell group.

As an embodiment, the first group of serving cells is in an inactive state when the first signaling is detected.

As an embodiment, the first signaling is detected to include: determining that the first signaling is present by monitoring the first signaling.

As an embodiment, when the first signaling is detected, fourth signaling is sent indicating that the process of activating the first serving cell group is completed.

As an embodiment, after the first signaling is processed, a fourth signaling is sent, the fourth signaling indicating that the process of activating the first serving cell group is completed.

As an embodiment, after the first signaling is processed, fourth signaling is sent, the fourth signaling indicating that the first serving cell group is activated.

As an embodiment, after the first signaling is processed, fourth signaling is sent, where the fourth signaling indicates that the first serving cell group is already in an active state.

As an embodiment, the first group of serving cells is in an inactive state after the first signaling is processed.

As one embodiment, the first signaling indicates that the first serving cell group remains in an inactive state.

As an embodiment, the length of the first time window is preconfigured.

As an embodiment, the length of the first time window is indicated by a fifth signaling indicating that the first group of serving cells is deactivated.

As a sub-embodiment of the above embodiment, the fifth signaling includes one MAC CE.

As a sub-embodiment of the above embodiment, the fifth signaling comprises an RRC signaling.

As an embodiment, the length of the first time window is configured by an SIB (System Information Block).

As an embodiment, the length of the first time window is configured by RRC signaling.

As an embodiment, the length of the first time window is configured by higher layer signaling.

As an embodiment, the phrase that the starting position of the first time window depends on the time domain resource occupied by the first information includes: the starting position of the first time window is the next time slot of the time domain resource occupied by the first information.

As an embodiment, the phrase that the starting position of the first time window depends on the time domain resource occupied by the first information includes: the starting position of the first time window is determined by the time domain resource occupied by the first information and the first time domain resource offset.

As a sub-embodiment of the above embodiment, the first time domain resource offset is pre-configured.

As a sub-embodiment of the above embodiment, the first time domain resource offset is indicated by a fifth signaling indicating that the first serving cell group is deactivated.

As a sub-embodiment of the above embodiment, the first time domain resource offset is configured by a SIB.

As an embodiment, the second SR includes one UCI.

As an embodiment, the second SR includes a preamble.

As an embodiment, the preamble included in the second SR is preconfigured.

As an embodiment, the preamble included in the second SR is indicated by a fifth signaling, and the fifth signaling indicates that the first serving cell group is deactivated.

As an embodiment, the preamble included in the second SR is configured by an SIB.

As an embodiment, the preamble included in the second SR is configured through RRC signaling.

As an embodiment, the preamble included in the second SR is configured through higher layer signaling.

As an embodiment, the air interface resource occupied by the second SR is configured in advance.

As an embodiment, an air interface resource for sending the second SR is indicated by a fifth signaling, and the fifth signaling indicates that the first serving cell group is deactivated.

As an embodiment, the air interface resource occupied by the second SR is configured through an SIB.

As an embodiment, the air interface resource occupied by the second SR is configured through RRC signaling.

As an embodiment, the air interface resource occupied by the second SR is configured through higher layer signaling.

As a sub-embodiment of the foregoing embodiment, the air interface resource occupied by the second SR includes a time domain resource occupied by the second SR.

As a sub-embodiment of the foregoing embodiment, the air interface resource occupied by the second SR includes a frequency domain resource occupied by the second SR.

As a sub-embodiment of the foregoing embodiment, the air interface resource occupied by the second SR includes a multiple access signature occupied by the second SR.

As an embodiment, in the first time window, the second SR is not allowed to be transmitted on the first group of serving cells.

As an embodiment, the second SR is transmitted on a PRACH (Physical Random Access Channel).

As an embodiment, the second SR is transmitted on a PUCCH (Physical Uplink Control Channel).

As an embodiment, the second SR is transmitted on a physical uplink channel.

As an embodiment, continuing to transmit the second SR has the advantage of: the first node and the second service cell group can be interrupted in communication, the first information can be timely transmitted by transmitting the second SR through the first service cell group, on one hand, the reliability of the transmission of the first information can be enhanced, on the other hand, the first cell group can be timely activated, and therefore the transmission delay of data is reduced.

As an embodiment, the second SR is used to trigger the second signaling.

As an embodiment, the configuration information of the second channel includes a modulation and coding scheme used by the second channel.

As an embodiment, the configuration information of the second channel includes a configuration of a DMRS used by the second channel.

As an embodiment, the second Channel includes a PUSCH (Physical Uplink Shared Channel).

As an embodiment, the second Channel includes a PUCCH (Physical Uplink Control Channel).

As one embodiment, the first serving cell group is in an inactive state when a second SR is sent on the first serving cell group.

As an embodiment, the time-frequency resource occupied by the second channel corresponds to the first serving cell group.

As an embodiment, the time-frequency resource occupied by the second channel corresponds to one serving cell in the first serving cell group.

As an embodiment, the first information sent on the second channel is scrambled by a user identity assigned by the first serving cell group.

As an embodiment, the first logical channel group identity is only allocated to the first serving cell group and not to the second serving cell group.

As an embodiment, the first information includes a first logical channel group identity and a first buffer size, where the first buffer size indicates a data amount of available data in a logical channel group identified by the first logical channel group identity; the first information is transmitted on a first MAC CE, and a MAC subheader (subheader) corresponding to the first MAC CE indicates that the first logical channel group identity corresponds to the first serving cell group.

As a sub-embodiment of the foregoing embodiment, the MAC subheader corresponding to the first MAC CE includes a first LCID, where the first LCID indicates that a first logical channel group identity corresponds to the first serving cell group.

As an embodiment, the first information includes a first logical channel group identity and a first buffer size, where the first buffer size indicates a data amount of available data in a logical channel group identified by the first logical channel group identity; the first information is transmitted on a first MAC CE, the first MAC CE including a first identifier indicating that the first logical channel group identity corresponds to the first serving cell group.

As an embodiment, the first information includes a first logical channel group identity and a first buffer size, where the first buffer size indicates a data amount of available data in a logical channel group identified by the first logical channel group identity; the first information is transmitted on a first MAC CE for carrying information for the first serving cell group.

As an embodiment, the first node and the second node are connected through a Uu interface.

As an embodiment, the first node and the third node are connected through a Uu interface.

As an embodiment, the second node and the third node are connected through an Xn interface.

As an embodiment, the second node and the third node are connected through an X2 interface.

As an embodiment, the second node and the third node are connected through a wired interface.

Example 6

Embodiment 6 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 6. In fig. 6, the order of the steps in the blocks does not represent a specific chronological relationship between the individual steps. In fig. 6, the steps in the dotted line box F1 and the dotted line box F2 are optional.

For theFirst node U1Generating first information in step S6101, the first information indicating a buffer status of the first serving cell group; when the first serving cell group is in an active state, transmitting the first information through the first serving cell group at step S6102; when the first serving cell group is in an active state, transmitting a first SR in the second serving cell group in step S6103; receiving a third signaling on the second serving cell group in step S6104, the third signaling indicating configuration information of a first channel; sending the first information on the first channel in step S6105; in step S6106Wherein the first signaling is monitored on the second serving cell group; when the first signaling is detected, starting to monitor control signaling of the first serving cell group in step S6107; when the first signaling is not detected in a first time window, transmitting a second SR on the first serving cell group in step S6108; receiving second signaling on the first serving cell group in step S6109, the second signaling indicating configuration information of a second channel; transmitting the first information on the second channel in step S6110;

for theSecond node U2Receiving a first SR in step S6201; transmitting a third signaling in step S6202; receiving first information in step S6203; transmitting a first signaling in step S6204;

for theThird node U3Receiving a second SR in step S6301; transmitting a second signaling in step S6302; receiving the first information through the second channel in step S6303;

wherein the first serving cell group and the second serving cell group are SCG and MCG, respectively; the first information is used to trigger the first signaling; the starting position of the first time window depends on the time domain resource occupied by the first information; the first information is used to trigger the second SR; the first information is used to trigger a first SR, the first information being transmitted on the first channel; the air interface resource occupied by the first SR is used to determine whether the cache state indicated by the first information is for the first serving cell group or the second serving cell group.

As an embodiment, the first SR includes a UCI (Uplink Control Information).

As an embodiment, the first SR includes a preamble.

As an embodiment, the preamble included in the first SR is allocated to the first serving cell group.

As an embodiment, the first SR is transmitted on a PRACH (Physical Random Access Channel).

As an embodiment, the first SR is transmitted on a PUCCH (Physical Uplink Control Channel).

As an embodiment, the first SR is transmitted on a physical uplink channel.

As an embodiment, the first SR includes one UCI.

As an embodiment, the preamble included in the first SR is preconfigured.

As an embodiment, the preamble included in the first SR is indicated by fifth signaling, and the fifth signaling indicates that the first serving cell group is deactivated.

As an embodiment, the preamble included in the first SR is configured by an SIB.

As an embodiment, the preamble included in the first SR is configured through RRC signaling.

As an embodiment, the preamble included in the first SR is configured through higher layer signaling.

As an embodiment, the air interface resource occupied by the first SR is configured in advance.

As an embodiment, an air interface resource for sending the first SR is indicated by a fifth signaling, and the fifth signaling indicates that the first serving cell group is deactivated.

As an embodiment, the air interface resource occupied by the first SR is configured through an SIB.

As an embodiment, the air interface resource occupied by the first SR is configured through RRC signaling.

As an embodiment, the air interface resource occupied by the first SR is configured through higher layer signaling.

As a sub-embodiment of the foregoing embodiment, the air interface resource occupied by the first SR includes a time domain resource occupied by the first SR.

As a sub-embodiment of the foregoing embodiment, the air interface resource occupied by the first SR includes a frequency domain resource occupied by the first SR.

As a sub-embodiment of the foregoing embodiment, the air interface resource occupied by the first SR includes a multiple access signature occupied by the first SR.

As an embodiment, the first SR is used to trigger the third signaling.

As an embodiment, the air interface resource occupied by the first SR is used to determine the air interface resource occupied by the third signaling.

As an embodiment, the air interface resource occupied by the first SR includes a time domain resource occupied by the first SR.

As an embodiment, the air interface resource occupied by the first SR includes a frequency domain resource occupied by the first SR.

As an embodiment, the air interface resource occupied by the first SR includes a multiple access signature occupied by the first SR.

As an embodiment, the air interface resource occupied by the third signaling includes a time domain resource occupied by the third signaling.

As an embodiment, the air interface resource occupied by the third signaling includes a search space occupied by the third signaling.

As an embodiment, the air interface resource occupied by the third signaling includes a CORESET (control resource set) occupied by the third signaling.

As a sub-embodiment of the foregoing embodiment, the phrase that the air interface resource occupied by the first SR is used to determine the air interface resource occupied by the third signaling includes: the time domain resource occupied by the first SR is used to determine the time domain resource occupied by the third signaling.

As a sub-embodiment of the foregoing embodiment, the phrase that the air interface resource occupied by the first SR is used to determine the air interface resource occupied by the third signaling includes: the frequency domain resources occupied by the first SR are used to determine the frequency domain resources occupied by the third signaling.

As an embodiment, the air interface resource occupied by the first SR is used to determine a signaling format of the third signaling, and the signaling format of the third signaling implicitly indicates that the first channel is allocated to the first information.

As an embodiment, the air interface resource occupied by the first SR is used to determine the time-frequency resource occupied by the first channel, and the signaling format of the third signaling implicitly indicates that the first channel is allocated to the first information.

As an embodiment, the third signaling includes a DCI (Downlink Control Information).

As an embodiment, the signaling format of the third signaling refers to a signaling format of DCI included in the third signaling.

As an embodiment, the third signaling contains second indication information indicating that the first channel is allocated to the first information.

As an embodiment, the third signaling is received before transmitting the first SR.

As one embodiment, the third signaling indicates a deactivation of the first serving cell group.

As an embodiment, the third signaling comprises part or all of one RRC signaling.

As an embodiment, the third signaling comprises a higher layer signaling.

As an embodiment, the air interface resource occupied by the first SR is used to determine the time domain resource occupied by the first channel.

As an embodiment, the air interface resource occupied by the first SR is used to determine the time-frequency domain resource occupied by the first channel.

As an embodiment, the air interface resource occupied by the first SR is used to determine the time-frequency resource occupied by the first channel.

As an embodiment, the configuration information of the first channel includes at least one of a time domain resource occupied by the first channel, a frequency domain resource occupied by the first channel, a modulation and coding scheme occupied by the first channel, a DMRS configuration occupied by the first channel, and a multiple access signature occupied by the first channel.

As one embodiment, the first channel is transmitted on a second set of serving cells.

As an embodiment, the first channel is transmitted on any one of the cells in the second set of cells.

As an embodiment, the time-frequency resource occupied by the first channel corresponds to a second serving cell group.

As an embodiment, the time-frequency resource occupied by the first channel corresponds to one serving cell in the second serving cell group.

As an embodiment, the first information sent on the first channel is scrambled by a user identity allocated by the second serving cell group.

Example 7

Embodiment 7 illustrates a block diagram of a processing apparatus used in a first node, as shown in fig. 7. In embodiment 7, the first node processing apparatus 700 includes a first transmitter 701 and a first receiver 702.

The first receiver 702 generates first information indicating a buffer status of a first serving cell group;

the first transmitter 701, when the first serving cell group is in an active state, transmits the first information through the first serving cell group; transmitting the first information through the second serving cell group when the first serving cell group is in an inactive state;

in embodiment 7, the first serving cell group and the second serving cell group are SCG and MCG, respectively.

For one embodiment, the first receiver 702 monitors for first signaling on the second serving cell group; when the first signaling is detected, starting to monitor control signaling of the first serving cell group;

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

For one embodiment, the first transmitter 701 includes the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475, and the memory 476 of fig. 4.

For one embodiment, the first transmitter 701 includes at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475, and the memory 476 of fig. 4.

For one embodiment, the first receiver 702 includes the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475, and the memory 476 of fig. 4.

For one embodiment, the first receiver 702 includes at least one of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475, and the memory 476 of fig. 4.

Example 8

Embodiment 8 is a block diagram illustrating a processing apparatus used in a second node, as shown in fig. 8. In fig. 8, a second node processing apparatus 800 comprises a second receiver 801 and a second transmitter 802.

The second receiver 801, receiving the first information through the second serving cell group;

in embodiment 8, the first information indicates a buffer status of a group of first serving cells; the first serving cell group is in an inactive state; the first information is sent over a first serving cell group when the first serving cell group is in an active state; the first serving cell group and the second serving cell group are SCG and MCG, respectively.

As an embodiment, the second transmitter 802, sends the first signaling through the second serving cell group;

wherein the first signaling is monitored over the second serving cell group; when the first signaling is detected, starting to monitor control signaling of the first serving cell group; the first serving cell group is in an inactive state; the first information is used to trigger the first signaling.

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

The second transmitter 802 includes, for one embodiment, at least one of the antenna 452, the transmitter/receiver 454, the multi-antenna transmitter processor 457, the transmit processor 468, the controller/processor 459, the memory 460, and the data source 467 of fig. 4 of the present application.

The second transmitter 802 includes, for one embodiment, the antenna 452, the transmitter/receiver 454, the multi-antenna transmitter processor 457, the transmit processor 468, the controller/processor 459, the memory 460, and the data source 467 of fig. 4 of the present application.

For one embodiment, the second receiver 801 includes at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, and the data source 467 of fig. 4.

For one embodiment, the second receiver 801 includes the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, and the data source 467 of fig. 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The first node in this application includes but not limited to wireless communication devices such as cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, aircraft, unmanned aerial vehicle, telecontrolled aircraft. The second node in this application includes but not limited to wireless communication devices such as cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, aircraft, unmanned aerial vehicle, remote control plane. The third node in this application includes but not limited to wireless communication devices such as cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, aircraft, unmanned aerial vehicle, telecontrolled aircraft. User equipment or UE or terminal in this application include but not limited to cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, aircraft, unmanned aerial vehicle, wireless communication equipment such as remote control aircraft. The base station device, the base station or the network side device in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission and reception node TRP, a GNSS, a relay satellite, a satellite base station, an air base station, and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A first node for wireless communication, comprising:

2. The first node of claim 1, comprising:

the first receiver monitoring for first signaling on the second serving cell group; when the first signaling is detected, starting to monitor control signaling of the first serving cell group;

3. The first node of claim 2, comprising:

the first transmitter to transmit a second SR on the first serving cell group when the first signaling is not detected in a first time window;

the first transmitter transmits the first information on the second channel;

4. The first node according to any of claims 1 to 3, comprising:

the first transmitter transmitting a first SR on the second serving cell group;

the first receiver receiving third signaling on the second serving cell group, the third signaling indicating configuration information of a first channel;

5. The first node according to any of claims 1 to 4, wherein the first information comprises a first logical channel group identity and a first buffer size, the first buffer size indicating a data amount of available data of a logical channel group identified by the first logical channel group identity; the first logical channel group identity is assigned to the first serving cell group.

6. A second node for wireless communication, comprising:

7. The second node of claim 6, comprising:

a second transmitter for transmitting the first signaling through the second serving cell group;

8. The second node according to any of claims 6 to 7, comprising:

the second receiver receiving a first SR on the second serving cell group;

the second transmitter, sending a third signaling on the second serving cell group, the third signaling indicating configuration information of the first channel;

the second receiver receives first information on the second channel.

Wherein the first information is used to trigger the first signaling.

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

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

receiving the first information through the second serving cell group;