CN112910615B

CN112910615B - Method and apparatus in a node used for wireless communication

Info

Publication number: CN112910615B
Application number: CN201911135069.4A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2022-06-21
Anticipated expiration: 2039-11-19
Also published as: CN112910615A

Abstract

A method and apparatus in a node used for wireless communication is disclosed. A first node receives a target signal and a first reference signal; transmitting a first signal group; wherein the first reference signal is used to determine a first measurement result, which is used to start a first timer; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine a second reference signal; the duration of the first timer is related to a first time window; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access. By setting the first timer associated with the first time window, the signaling flow is adjusted and optimized, the time delay is reduced, and the efficiency is improved.

Description

Method and apparatus in a node used for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus for reducing delay and improving transmission reliability in wireless communication, and related to beam and link recovery.

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 on 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 sessions, and Work on NR starts on 3GPP RAN #75 sessions where WI (Work Item) of NR has passed.

In Communication, both LTE (Long Term Evolution) and 5G NR relate to beam and link maintenance, which is important for normal Communication between a base station and user equipment, reasonable scheduling of resources, and effective coordination of system interference, and may be a high throughput rate, a fundamental stone for improving spectrum utilization, and are essential for eMBB (enhanced Mobile BroadBand), URLLC (Ultra Reliable Low Latency Communication), and eMTC (enhanced Machine Type Communication). Meanwhile, in the Internet of Things in the field of the IIoT (Industrial Internet of Things), in V2X (Vehicular to X), communication between devices (Device to Device), communication in unlicensed spectrum, user communication quality monitoring, Network planning optimization, and NTN (Non terrestrial Network communication), in a mixture of the above various communication modes, there are wide applications in radio resource management and codebook selection for multiple antennas.

With the continuous increase of the scenes and the complexity of the system, higher requirements are put forward on the reduction of time delay, the enhancement of reliability and the enhancement of the stability of the system, the comprehensive processing of beams and the recovery of links, and meanwhile, the compatibility among different versions of different systems needs to be considered when the system is designed.

Disclosure of Invention

In different communication scenarios, the signal quality is degraded and even communication is interrupted due to problems at the transmitting or receiving end, or due to the influence of communication propagation delay, or due to non-ideal device factors. The communication device typically takes measures to take measurements and initiates a recovery procedure when a problem occurs in the communication link, including a beam failure or a radio link failure. According to different problems in communication, different recovery mechanisms are generally adopted, some recovery may only involve a physical layer, some recovery may involve a higher layer, different recovery procedures require different signaling processes, some recovery procedures are complex, some recovery procedures are simple, but some procedures require interaction, and further delay is generated by the interaction of the procedures, especially when the distance between nodes is long, or other reasons, such as signal detection failure, cause the procedure to have larger delay, further uncertainty is generated by the recovery of a link, and meanwhile, communication interruption is further caused. This can lead to a reduction in resource efficiency, difficulty in ensuring communication quality, inability of nodes to establish effective communication bearers, and various complications. On the other hand, the design criteria, accuracy and geographical location of different systems may be different, and various communication scenarios may be mixed, which all bring problems to the design of the system.

In view of the above, the present application provides a solution.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments in any node of the present application may be applied to any other node. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict. In addition, it should be noted that, in the above problem description, the NTN scenario is only taken as an example of an application scenario of the solution provided in the present application; the method and the device are also applicable to the scenes such as the ground network, and achieve the technical effect similar to the NTN scene. Similarly, the present application is also applicable to scenarios where there is a network of UAVs (Unmanned Aerial vehicles), or internet of things devices, for example, to achieve technical effects in NTN-like scenarios. Furthermore, employing a unified solution for different scenarios (including but not limited to NTN scenarios and ground network scenarios) also helps to reduce hardware complexity and cost.

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

receiving a target signal and a first reference signal;

transmitting a first signal group;

wherein the first reference signal is used to determine a first measurement result, which is used to start a first timer; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine a second reference signal; the duration of the first timer is related to a first time window; the first set of signals occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access.

As an embodiment, the problem to be solved by the present application includes: when a node occurs or a beam failure and a wireless link failure may occur simultaneously, especially when the propagation delay of the link is large, how to recover in the shortest time. The method combines the recovery processes of the beam failure and the wireless link according to different times and different conditions of the beam failure and the wireless link, thereby solving the problem.

As an embodiment, the characteristics of the above method include: the target Signal includes an SSB (Synchronization Signal Block), the first Reference Signal includes a CSI-RS (Channel State Information-Reference Signal), the first Reference Signal includes an SSB (Synchronization Signal Block), the first Signal group includes an access Preamble sequence (Preamble), and the second Reference Signal includes an SSB (Synchronization Signal Block).

As an embodiment, the benefits of the above method include: the first set of measurements is used to trigger a first signal group that requests recovery of the communication link, which is beneficial to enhance the reliability of link recovery.

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

receiving second signaling in the first time window;

wherein the second signaling is used for determining the second reference signal, and the time-frequency resource occupied by the second signaling is related to the second reference signal; the expiration time of the first timer is greater than the duration of the first time window; the first node stops the first timer.

As an embodiment, the method is characterized in that the second signaling includes RAR (Random Access Response), and the second signaling includes TCI (Transmission Configuration Indication).

transmitting a second signal when a second signaling is not received in the first time window; and receiving a third signaling;

wherein the second signaling is used for determining the second reference signal, and the time-frequency resource occupied by the second signaling is related to the second reference signal; the expiration time of the first timer is greater than the duration of the first time window; the third signaling is used for feeding back the second signal; the first measurement result is used to trigger the second signal.

receiving a second signaling in the first time window, and transmitting a fourth signal on a fourth set of time-frequency resources;

wherein the second signaling is used for determining the second reference signal, and the time-frequency resource occupied by the second signaling is related to the second reference signal; the second signaling is used to indicate the fourth set of time-frequency resources, an expiration time of the first timer is greater than a duration of the first time window, the first node stops the first timer, the first measurement result is used to trigger the fourth signal.

As an embodiment, the method is characterized in that the fourth signal includes an RRC Re-initialization Request (Radio Resource Control reestablishment Request) message.

receiving fourth signaling, the fourth signaling being used for feeding back the fourth signal.

As an embodiment, the characteristics of the above method include: the fourth signaling includes an RRC Re-establishment (RRC Re-establishment) message.

As an embodiment, the characteristics of the above method include: the fourth signaling comprises a RRC Setup message.

In particular, according to one aspect of the present application, the expiration time of the first timer is related to the geographical location of the first node.

In particular, according to one aspect of the present application, it is characterized in that the transmission of said first set of signals is related to the location information of said first node.

In particular, according to an aspect of the present application, it is characterized in that said first node is a user equipment.

In particular, according to one aspect of the present application, it is characterized in that said first node is a relay.

Specifically, according to an aspect of the present application, the first node is a vehicle-mounted terminal.

In particular, according to one aspect of the present application, it is characterized in that said first node is an aircraft.

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

transmitting a target signal and a first reference signal;

receiving a first signal group;

wherein the first reference signal is used to determine a first measurement result, which is used to start a first timer; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine a second reference signal; the duration of the first timer is related to a first time window; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access.

sending a second signaling;

wherein a sender of the first signal group receives the second signaling in the first time window; the second signaling is used for determining the second reference signal, and the time-frequency resources occupied by the second signaling are related to the second reference signal; the expiration time of the first timer is greater than the duration of the first time window; the first timer is stopped.

sending a second signaling and a third signaling and receiving a second signal;

wherein the sender of the first signal group does not receive the second signaling in the first time window; the second signaling is used for determining the second reference signal, and the time-frequency resources occupied by the second signaling are related to the second reference signal; the expiration time of the first timer is greater than the duration of the first time window; the third signaling is used for feeding back the second signal; the first measurement result is used to trigger the second signal.

sending a second signal and receiving a fourth signal;

wherein the sender of the first signal group does not receive the second signaling in the first time window; the second signaling is used for determining the second reference signal, and the time-frequency resources occupied by the second signaling are related to the second reference signal; the second signaling is used to indicate the fourth set of time-frequency resources, an expiration time of the first timer is greater than a duration of the first time window, the first timer is stopped, the first measurement result is used to trigger the fourth signal.

transmitting fourth signaling, the fourth signaling being used for feeding back the fourth signal.

In particular, according to one aspect of the present application, the expiration time of the first timer is related to the geographical location of the sender of the first signal group.

Specifically, according to one aspect of the present application, transmission of the first signal group is related to position information of a sender of the first signal group.

In particular, according to one aspect of the present application, it is characterized in that said first node is a base station.

In particular, according to one aspect of the present application, it is characterized in that said first node is a satellite.

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

a first receiver receiving a target signal and a first reference signal;

a first transmitter that transmits a first signal group;

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

a second transmitter which transmits a target signal and a first reference signal;

a second receiver receiving the first signal group;

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

when the communication distance between the user equipment and the synchronous source is long, the transmission delay is large, especially when the satellite communication is involved, if the wave beam fails and is not recovered according to the traditional scheme, the wireless link can also fail immediately, and the wireless link fails and needs to restart a new recovery flow, further delay can be brought, thereby causing long-time communication interruption.

Drawings

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

FIG. 1 shows a flow diagram of receiving a target signal and a first reference signal, transmitting a first signal group according to one embodiment of the application;

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

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

FIG. 4 shows a schematic diagram of a first node, a second node, according to an embodiment of the present application;

FIG. 5 shows a flow diagram of a transmission according to an embodiment of the present application;

FIG. 6 shows a schematic diagram of a first time window according to an embodiment of the present application;

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

fig. 8 shows a schematic diagram of a fourth set of time-frequency resources according to an embodiment of the present application;

figure 9 shows a schematic diagram of second signaling used to determine a second reference signal according to one embodiment of the present application;

FIG. 10 shows a schematic diagram of a first measurement result being used to trigger a second signal according to an embodiment of the present application;

fig. 11 shows a schematic diagram of second signaling used to indicate a fourth set of time-frequency resources according to an embodiment of the present application;

FIG. 12 shows a schematic diagram of a first measurement result being used to trigger a fourth signal according to an embodiment of the present application;

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

fig. 14 shows a block diagram of a processing device for use in a second node according to an embodiment of the application.

Detailed Description

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

Example 1

Embodiment 1 illustrates a flow chart of transmission of first signaling, second signaling and first wireless signals according to an embodiment of the present application, as shown in fig. 1. In fig. 1, each block represents a step, and it should be particularly emphasized that the sequence of the blocks in the figure does not represent a chronological relationship between the represented steps.

In embodiment 1, a first node in the present application receives a target signal and a first reference signal in step 101; transmitting a first set of signals in step 102; wherein the first reference signal is used to determine a first measurement result, which is used to start a first timer; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine a second reference signal; the duration of the first timer is related to a first time window; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access.

As one embodiment, the first node is a user equipment.

As one embodiment, the target Signal includes SSB (Synchronization Signal Block).

As one embodiment, the first Reference Signal includes a CSI-RS (Channel State Information-Reference Signal).

As one embodiment, the first reference Signal includes SSB (Synchronization Signal Block).

For one embodiment, the first signal group includes an access Preamble sequence (Preamble).

As one embodiment, the second reference Signal includes SSB (Synchronization Signal Block).

As one embodiment, the sender of the second reference signal is the sender of the first reference signal.

As one embodiment, a sender of the second reference signal is different from a sender of the first reference signal.

As an embodiment, the sender of the second reference signal and the sender of the first reference signal are a relationship of a Master Cell Group (Master Cell Group) and a slave Cell Group (Secondary Cell Group).

As an embodiment, the sender of the first reference signal is a PCell (Primary Cell).

As an embodiment, a sender of the first reference signal is a PSCell (Primary SCell).

As an embodiment, the first node measures a Signal quality of some or all sign bits of the first Reference Signal, where the Signal quality includes RSRP (Reference Signal Receiving Power), rsrq (Reference Signal Receiving quality) or a difference from a system configuration parameter, such as-3 dB, a Signal-to-noise ratio or a packet loss Rate of a data Channel, a delay of a communication link, and when the Signal quality is lower than a given threshold, the given threshold corresponds to a Block Error Rate (BLER Rate) of a PDCCH (Physical Downlink Control Channel) Channel under certain configuration being less than a given value, and the given value includes 10% and 1%, and is recorded as a communication failure, and the first Signal quality includes a number of times of the communication failure under certain configuration.

As an embodiment, the system configuration parameter and the certain configuration both have a PCell primary cell configuration of the first node.

As an embodiment, when the measurement process lasts for a certain time, the measurement result of the signal quality is processed by weighted average for the time.

As an embodiment, when said measured signal quality is not below said one given threshold, said first signal quality re-records said number of said communication failures in said certain configuration, i.e. said number of said communication failures is zeroed.

As an embodiment, a beam failure is considered to occur when the number of the communication failures recorded by the first measurement result is greater than a first threshold, the first threshold being configured by the first node PCell primary cell or PSCell primary slave cell.

As an example, the first threshold is a natural number between 1 and 10.

As an embodiment, a link failure is considered to occur when the number of the communication failures recorded by the first measurement result is greater than a second threshold, the second threshold being configured by a PCell primary cell or a PSCell primary slave cell of the first node.

As an example, the second threshold is a natural number between 1 and 20.

As an example, the first timer is started when the first measurement result is greater than a certain threshold, e.g. 10.

As an embodiment, when the first measurement result exceeds the first threshold, the first timer is started, the first timer is used as a hysteresis timer for declaring Radio Link Failure (Radio Link Failure), and when the first timer is not stopped, the Radio Link Failure is not considered.

As an embodiment, when the first measurement result exceeds the second threshold, the first timer is started, and when the first timer is not stopped, any RRC reestablishment Request (RRC Re-establishment Request) message related to Radio Link Failure (Radio Link Failure) is not initiated.

As an example, the first node sends the first set of signals when the first measurement result is greater than a certain threshold, e.g. 10.

As an embodiment, the first set of signals is transmitted when the first measurement exceeds the first threshold.

For one embodiment, the first signal group includes a first signal whose transmission is Contention-Free.

As an embodiment, the first signal is a Preamble sequence (Preamble).

For one embodiment, the first signal group includes a 1A signal, and the transmission of the 1A signal is Contention-Based (Contention-Based).

As one example, the transmission of the 1A signal is Contention-Free (Contention-Free).

As an embodiment, the 1A signal includes a Preamble sequence (Preamble).

As an embodiment, the first signal and the 1A signal are transmitted according to resources indicated by the first reference signal and the second reference signal, respectively.

As an embodiment, the ending time of the first time window is related to the distance from the first node to the serving cell of the first node, and the ending time of the first time window is later when the distance is larger.

As an example, the end time of the duration of the first time window is equal to D + K1 specific time slots; where D is a propagation delay of the first node to a sender of the first reference signal, D is an integer and is in units of specific time slots, and K1 is an integer and is also in units of specific time slots.

As an embodiment, the duration of the specific time slot does not exceed 10485.76 seconds (second).

As an embodiment, the duration of the specific time slot does not exceed 10.24 seconds (second).

As an example, the duration of the specific time slot does not exceed 10 milliseconds (millisecond).

As an example, the duration of the specific time slot does not exceed 5 milliseconds (millisecond).

As an embodiment, the duration of the specific time slot does not exceed 1 millisecond (milliconnected).

As an example, the duration of the specific time slot does not exceed 0.5 milliseconds (millisecond).

As an embodiment, the specific slot includes 1 multicarrier symbol.

As an embodiment, the specific slot comprises 7 multicarrier symbols.

As an embodiment, the specific slot comprises 14 multicarrier symbols.

As an embodiment, the specific time slot comprises 140 multicarrier symbols.

As an embodiment, the multicarrier symbol is an OFDM (Orthogonal Frequency-division Multiplexing) symbol.

As an embodiment, the multi-carrier symbol is a CP-OFDM (Cyclic Prefix-Orthogonal Frequency-division Multiplexing) symbol.

As an embodiment, the multicarrier symbols are SC-FDMA (Single Carrier-frequency division multiple access) symbols.

As an embodiment, the multicarrier symbol is an fbmc (filter Bank multicarrier) symbol.

As an embodiment, the multi-carrier symbol is a DFT-S-OFDM (Discrete Fourier transform-Spread-Orthogonal Frequency Division Multiplexing) symbol.

As an embodiment, the Multi-Carrier symbol is a UFMC (Universal Filtered Multi-Carrier) symbol.

As an embodiment, the multi-carrier symbol is a gfdm (generalized frequency division multiplexing) symbol.

As an example, the duration of the first time window is K2 specific time slots.

For one embodiment, the first time window is a receive window in which the first node receives the feedback signals of the first signal group.

As an embodiment, the first time window is related to a track type of the first reference signal sender, and the farther away the track type of the first reference signal sender is from the ground, the later the termination time of the first time window is.

As an embodiment, the duration of the first time window is independent of a distance of a sender of the first reference signal to the first node.

As an embodiment, the expiration time of the first timer is equal to the expiration time of the first time window.

As an example, the expiration time of the first timer is equal to the expiration time of the first time window plus K2 specific time slots.

As an embodiment, the first timer expires later than a start time of the first time window.

As an embodiment, the expiration time of the first timer is later than the beamFailureRecoveryTimer. (expiration of the beam failure recovery timer).

As one embodiment, the first signal group includes an implicit indication of the second reference signal.

As an embodiment, the second set of time-frequency resources occupied by the first signal group and the second reference signal have a one-to-one mapping relationship.

As one embodiment, the first signal group is indicative of the second reference signal.

As an embodiment, the reception quality of the first signal group is used for selecting the second reference signal.

In one embodiment, the second set of time-frequency resources is determined according to a system time indicated by the target signal.

As an embodiment, a reception time of a signal carried on the second set of time-frequency resources is synchronized with a transmission time of the target signal.

As an embodiment, the second time-frequency resource is determined by a system parameter indicated by the target signal, the system parameter comprising a subcarrier spacing.

As an embodiment, the index carried by the target signal is associated with the second time-frequency resource.

As an embodiment, the target signal includes MIB (Master Information Block).

As an embodiment, the target signal includes an SIB (System Information Block).

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 of 5G NR, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced) systems. The 5G NR or LTE network architecture 200 may be referred to as 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, and the S-GW/UPF212 itself is connected to the P-GW/UPF 213. The P-GW provides UE IP address assignment 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 corresponds to the first node in this application.

As an embodiment, the UE201 supports transmission in a non-terrestrial network (NTN).

As an embodiment, the UE201 supports transmission in a large delay-difference network.

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

As one embodiment, the gNB203 supports transmissions over a non-terrestrial network (NTN).

As an embodiment, the gNB203 supports transmission in large latency difference networks.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for 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 a user plane 350 and a control plane 300, fig. 3 showing the radio protocol architecture for the control plane 300 between a first node (UE, satellite or aircraft in a gNB or NTN) and a second node (gNB, satellite or aircraft in a UE or NTN), or 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 PHY301 and is responsible for the link between the first and second nodes and the two UEs through 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 multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by ciphering data packets and provides handoff support between second nodes to the first node. 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 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 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.

For one embodiment, the first reference signal is generated in the PHY 301.

As an embodiment, the second reference signal in this application is generated in the PHY 301.

As an embodiment, the target signal in the present application is generated in the PHY301 or the RRC 306.

As an embodiment, the first signal group in the present application is generated in the PHY301 or the MAC302 or the RRC 306.

As an embodiment, the second signaling in this application is generated in the PHY301 or the MAC302 or the RRC 306.

As an embodiment, the second signal in this application is generated in the PHY301 or the MAC302 or the RRC 306.

As an embodiment, the third signaling in this application is generated in the PHY301 or the MAC302 or the RRC 306.

As an embodiment, the fourth signaling in this application is generated in the PHY301 or the MAC302 or the RRC 306.

As an embodiment, the fourth signal in this application is generated in the PHY301 or the MAC302 or 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 450 and a second communication device 410 communicating with each other in an access network.

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

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

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

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

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

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

As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, for use with the at least one processor, the first communication device 450 apparatus at least: receiving a target signal and a first reference signal; transmitting a first signal group; wherein the first reference signal is used to determine a first measurement result, which is used to start a first timer; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine a second reference signal; the duration of the first timer is related to a first time window; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access.

As an embodiment, the first communication device 450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a target signal and a first reference signal; transmitting a first signal group; wherein the first reference signal is used to determine a first measurement result, which is used to start a first timer; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine a second reference signal; the duration of the first timer is related to a first time window; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access.

As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 410 means at least: transmitting a target signal and a first reference signal; receiving a first signal group; wherein the first reference signal is used to determine a first measurement result, which is used to start a first timer; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine a second reference signal; the duration of the first timer is related to a first time window; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access.

As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: transmitting a target signal and a first reference signal; receiving a first signal group; wherein the first reference signal is used to determine a first measurement result, which is used to start a first timer; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine a second reference signal; the duration of the first timer is related to a first time window; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access.

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

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

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

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

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

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

The second communication device 410 is a satellite, as one example.

For one embodiment, receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 are used to receive the first reference signal and the target signal.

For one embodiment, receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 are used to receive the second reference signal.

For one embodiment, receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 are used to receive the second signaling.

For one embodiment, receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 are used to receive the third signaling.

For one embodiment, receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 are used to receive the fourth signaling.

For one embodiment, a transmitter 456 (including an antenna 460), a transmit processor 455, and a controller/processor 490 are used to transmit the first set of signals in this application.

For one embodiment, a transmitter 456 (including an antenna 460), a transmit processor 455, and a controller/processor 490 are used to transmit the second signal in this application.

For one embodiment, a transmitter 456 (including an antenna 460), a transmit processor 455, and a controller/processor 490 are used to transmit the third signal in this application.

For one embodiment, a transmitter 456 (including an antenna 460), a transmit processor 455, and a controller/processor 490 are used to transmit the fourth signal in this application.

As one example, controller/processor 490 is used to start the first timer in this application.

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 second node N02 is the serving cell base station of the first node U01, and it is specifically illustrated that the sequence in this example does not limit the signal transmission sequence and the implemented sequence in this application.

For theSecond node N02The target signal and the first reference signal are transmitted in step S5201, the first signal group is received in step S5202, the second signaling is transmitted in step S5303, the second signal is received in step S5304, the third signaling is transmitted in step S5305, the fourth signal is received in step S5306, and the fourth signaling is transmitted in step S5307.

ForFirst node U01In step S5101, the target signal and the first reference signal are received, in step S5102, the first timer is started, in step S5103, the first signal group is sent, in step S5104, it is determined whether the second signaling is received in the first time window, in step S5105, the first timer is stopped, in step S5106, the second signal is sent, in step S5107, the third signaling is received, in step S5108, the fourth signaling is sent, and in step S5109, the fourth signaling is received.

In embodiment 5, the first reference signal in the present application is used to determine a first measurement result, which is used to start a first timer; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine a second reference signal; the duration of the first timer is related to a first time window; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access.

For one embodiment, the interface through which the first node U01 communicates with the second node N02 is a Uu interface.

As an embodiment, the target signal is an SSB, and includes a synchronization signal and an MIB.

For one embodiment, the first reference signal comprises an SSB.

In one embodiment, the first reference signal includes a CSI-RS.

For one embodiment, the first reference signal includes an SSB and a CSI-RS.

For one embodiment, the second reference signal comprises an SSB.

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

For one embodiment, the second reference signal includes an SSB and a CSI-RS.

As an embodiment, the second signaling is sent through a PDCCH.

As an embodiment, the second signaling is sent through a MAC CE (MAC Control Element).

As an embodiment, the second signaling is sent over a PDSCH.

As an embodiment, the second signaling comprises a RAR (Random access Response).

As an embodiment, the second signaling includes a TCI (Transmission Configuration Indication).

As an embodiment, the first node monitors PDCCH within the first time window.

As an embodiment, the first node monitors the PDCCH within the first time window, the monitoring the PDCCH including an indication of resources to receive a TCI.

As an embodiment, the first node monitors the PDCCH within the first time window, the monitoring the PDCCH including an indication of resources to receive RARs.

As an embodiment, the expiration time of the first timer is equal to the end time of the first time window.

As an embodiment, the expiration time of the first timer is equal to the end time of the first time window plus the time for receiving the message to monitor the resources indicated by the PDCCH.

As an embodiment, the second node does not detect the first signal group sent by the first node, and the second node does not receive the second signaling.

As an embodiment, the second node detects the first signal group sent by the first node, but does not send the second signaling.

As an embodiment, after the first node detects a beam failure according to the first measurement result, a radio link failure is further detected according to the first measurement result before receiving the second signaling.

As an embodiment, after the first node detects the beam failure according to the first measurement result, the first node further detects a radio link failure according to the first measurement result before receiving the second signaling, and the first node does not terminate the random access procedure currently used for beam failure recovery, but waits for a period of time, and the waiting for a period of time is controlled by the first timer.

As an embodiment, after the first node detects a beam failure according to the first measurement result, a radio link failure is further detected according to the first measurement result before receiving the second signaling, the second signaling is received before sending a further RRC reestablishment request message triggered by the radio link failure, and the radio link is considered to be recovered.

As an embodiment, after the first node detects a beam failure according to the first measurement result, a radio link failure is further detected according to the first measurement result before receiving the second signaling, the second signaling is received before sending a further RRC reestablishment request message triggered by the radio link failure, and the first node sends the RRC reestablishment request message by using resource indication information carried in the second signaling.

As an embodiment, the third signaling is sent over a PDSCH.

As an embodiment, the fourth signaling is sent over a PDSCH.

As an embodiment, the fourth signal is transmitted over a PUSCH.

As one embodiment, the second signal is transmitted through a PDSCH.

As an embodiment, the first signal group is transmitted through a PRACH.

As an embodiment, the first signal group is transmitted through a MAC CE.

As one embodiment, the first signal group is transmitted over a PUSCH.

For one embodiment, a sender of the first reference signal is co-sited with a sender of the second reference signal.

For one embodiment, the sender of the first reference signal is not co-sited with the sender of the second reference signal.

As an embodiment, the time-frequency resource occupied by the second signaling indicates the second reference signal.

As an embodiment, the second signaling the TCI used by the second reference signal.

As an embodiment, a quasi co-location (QCL) relationship exists between the time-frequency resource occupied by the second signaling and the second reference signal.

As an embodiment, the time-frequency resources occupied by the second reference signal are a subset of the time-frequency resources occupied by the second signaling in time.

As an embodiment, the time-frequency resources occupied by the second reference signal are a subset of the time-frequency resources occupied by the second signaling in frequency.

As an embodiment, the time-frequency resources occupied by the second signaling are a subset of the time-frequency resources occupied by the second reference signal in time.

As an embodiment, the time-frequency resources occupied by the second signaling are a subset of the time-frequency resources occupied by the second reference signal in frequency.

As an embodiment, the time-frequency resource occupied by the second signaling and the second reference signal are interleaved in time and frequency.

As an embodiment, the signaling configuring the time-frequency resource occupied by the second signaling also configures the time-frequency resource occupied by the second reference signal.

As an embodiment, the expiration time of the first timer is related to a geographical location of the first node.

As an embodiment, the first timer expires later when the first node is at an edge of a larger cell than when the first node is at a center of the larger cell.

As one embodiment, the larger cell comprises a 1000 kilometer radius cell.

As an embodiment, the expiration time of the first timer is later the farther the first node is located from the base station.

For one embodiment, the base station comprises a satellite.

As an embodiment, the expiration time of the first timer is later when the elevation angle of the first node with a serving base station of the first node is smaller.

For one embodiment, the first timer expires later when the first node is on the ground than when the first node is on the air.

As an embodiment, when the first node is located within a TN (terrestrial Network) cell, the first signal group comprises signals transmitted in a non-contention manner.

As an embodiment, when the first node is located in an NTN (Non-terrestrial Network) cell, the first signal group includes signals transmitted in a contention manner.

As an embodiment, when the first node is located in an NTN (Non-terrestrial Network) cell, the first signal group includes both signals transmitted in a Non-contention manner and signals transmitted in a contention manner.

As an embodiment, the transmission power of the first signal group is determined by the distance of the first node from its serving cell.

As an embodiment, the TA (timing advance) used when the first signal group is transmitted is proportional to the distance of the first node from the serving cell of the first node.

As an embodiment, when the first node is located at a cell edge, the first signal group includes a plurality of different preamble sequence signals.

Example 6

Embodiment 6 illustrates a first time window schematic according to an embodiment of the present application, as shown in fig. 6.

As an embodiment, the first time window is determined by a time of termination and a duration of the first time window.

As an embodiment, the first time window is determined by a start time and a duration of the first time window.

As an embodiment, the first time window is determined by an end time and an end time of the first time window.

As an embodiment, the end time of the first time window is related to the distance of the first node to the sender of the first reference signal, the end time of the first time window being later when the distance is larger.

As an example, the duration of the specific time slot does not exceed 1 millisecond (millisecond).

As an embodiment, the duration of the specific time slot does not exceed 0.5 milliseconds (millisecond).

As an embodiment, the specific slot includes 1 multicarrier symbol.

As an embodiment, the specific slot comprises 7 multicarrier symbols.

As an embodiment, the specific slot comprises 14 multicarrier symbols.

As an embodiment, the specific time slot comprises 140 multicarrier symbols.

As an embodiment, the multicarrier symbol is a gfdm (generalized frequency division multiplexing) symbol.

As one embodiment, the first time window is K2 particular slots in duration, where K2 is a positive integer.

As an embodiment, the first time window is a reception window during which the first node receives the second signaling.

As one embodiment, a start time of the first time window is no earlier than a Time Advance (TA) amount of the first node.

Example 7

Embodiment 7 illustrates a schematic diagram of a second set of time-frequency resources according to an embodiment of the present application, as shown in fig. 7. In embodiment 7, the second set of time-frequency resources includes a positive integer number of air interface resource blocks; the second air interface resource block is one air interface resource block in the second air interface resource set.

For one embodiment, the first set of signals occupies a second set of time-frequency resources.

As an embodiment, the second set of time-frequency resources is configured by a serving cell of the first node.

As an embodiment, the second set of time-frequency resources is associated with the target signal;

Example 8

Embodiment 8 illustrates a schematic diagram of a fourth set of time-frequency resources according to an embodiment of the present application, as shown in fig. 8. In embodiment 8, the fourth set of time-frequency resources includes a positive integer number of air interface resource blocks; the fourth air interface resource block is one air interface resource block in the fourth air interface resource set.

As one embodiment, the first node transmits the fourth signal in a fourth set of time-frequency resources.

As an embodiment, the second signaling indicates the fourth set of time-frequency resources.

In an embodiment, the second signaling is used to indicate a part of air interface resources of the fourth time frequency set.

As one embodiment, the fourth set of time-frequency resources relates to the first reference signal.

As an embodiment, the fourth set of time-frequency resources relates to the second reference signal.

Example 9

Embodiment 9 illustrates a schematic diagram in which second signaling is used for determining a second reference signal according to an embodiment of the present application, as shown in fig. 9.

As an embodiment, the second signaling includes a TCI (Transmission Configuration Indication), and the TCI is associated with the second reference signal.

As an embodiment, the second signaling includes a TCI (Transmission Configuration Indication), and the TCI and the second reference signal have a QCL (quasi co-located).

As an embodiment, the second signaling is sent on a frequency band where the second reference signal is located.

As an embodiment, the second signaling displays a configuration parameter indicating the second reference signal.

As an embodiment, a transmission time of the second signaling is synchronized with a transmission time of the second reference signal.

Example 10

Embodiment 10 illustrates a schematic diagram in which a first measurement result is used to trigger a second signal according to an embodiment of the present application, as shown in fig. 10.

As an embodiment, the second signal is triggered to be sent when the first measurement result is greater than a second signal threshold.

As an embodiment, the second signal threshold is a positive integer including 1 to 20.

As an embodiment, the first measurement result comprises a measurement value for a beam failure and also a measurement value for a radio link failure.

As an embodiment, the first measurement result includes a number of times of continuous out-of-sync (out-of-sync) of the physical layer in a certain time, and the second signal is triggered to be sent when the number of times of out-of-sync is greater than a threshold, and the threshold includes a positive integer from 1 to 20 as a sub-embodiment.

Example 11

Embodiment 11 illustrates a schematic diagram in which second signaling is used to indicate a fourth set of time-frequency resources according to an embodiment of the present application, as shown in fig. 11.

As an embodiment, the second signaling displays information carrying the fourth set of time-frequency resources.

As an embodiment, the second signaling comprises a RAR control entity comprising an indication of the fourth set of time-frequency resources.

As an embodiment, the time-frequency resource occupied by the second signaling and the fourth set of time-frequency resources have the same time.

As an embodiment, the time-frequency resource occupied by the second signaling and the fourth set of time-frequency resources have the same frequency.

As an embodiment, the receiving time of the second signaling and the fourth set of time-frequency resources have a definite relationship in time and frequency.

In one embodiment, the second signaling indicates that the fourth set of time-frequency resources is equal to the second set of time-frequency resources.

As an embodiment, the second signaling indicates that the fourth set of time-frequency resources has a certain relationship with the second set of time-frequency resources.

Example 12

Embodiment 12 illustrates a schematic diagram in which a first measurement result is used to trigger a fourth signal according to an embodiment of the present application, as shown in fig. 12.

As an embodiment, the fourth signal is triggered to be sent when the first measurement result is greater than a fourth signal threshold.

As an embodiment, the fourth signal threshold is a positive integer comprising 1 to 20.

As an embodiment, the first measurement result includes a number of times of continuous out-of-sync (out-of-sync) of the physical layer in a certain time, and the fourth signal is triggered to be sent when the number of times of out-of-sync is greater than a threshold, and the threshold includes a positive integer from 1 to 20 as a sub-embodiment.

As an embodiment, the fourth signal is used for radio link failure recovery to send an RRC reestablishment request message, and the first measurement result is used for confirming a radio link failure.

Example 13

Embodiment 13 illustrates a block diagram of a processing apparatus for use in a first node according to an embodiment of the present application; as shown in fig. 13. In fig. 13, the processing means 1300 in the first node comprises a first receiver 1301, a first transmitter 1302. In the case of the embodiment 13, however,

a first receiver 1301 receiving a target signal and a first reference signal;

a first transmitter 1302 for transmitting a first signal group;

in embodiment 13 the first reference signal is used to determine a first measurement result, which is used to start a first timer; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine a second reference signal; the duration of the first timer is related to a first time window; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access.

For one embodiment, the first receiver 1301 receives the second reference signal.

For one embodiment, the first receiver 1301 receives the second signaling in the first time window; wherein the second signaling is used for determining the second reference signal, and the time-frequency resource occupied by the second signaling is related to the second reference signal; the expiration time of the first timer is greater than the duration of the first time window; the processing means 1300 in the first node stops the first timer.

For one embodiment, the first receiver 1301 does not receive the second signaling in the first time window, and the first transmitter 1302 transmits the second signal; the first receiver 1301 receives a third signaling; wherein the second signaling is used for determining the second reference signal, and the time-frequency resource occupied by the second signaling is related to the second reference signal; the expiration time of the first timer is greater than the duration of the first time window; the third signaling is used for feeding back the second signal; the first measurement result is used to trigger the second signal.

As an embodiment, the first receiver 1301 receives a second signaling in the first time window; the first transmitter 1302 transmitting a fourth signal on a fourth set of time frequency resources; wherein the second signaling is used for determining the second reference signal, and the time-frequency resource occupied by the second signaling is related to the second reference signal; the second signaling is used to indicate the fourth set of time frequency resources, an expiration time of the first timer is greater than a duration of the first time window, the first node stops the first timer, and the first measurement result is used to trigger the fourth signal.

For one embodiment, the first receiver 1301 receives fourth signaling, which is used for feeding back the fourth signal.

As one embodiment, the expiration time of the first timer is related to a geographic location of the first node.

As an embodiment, the sending of the first set of signals is related to location information of the first node.

As an embodiment, the first node is a User Equipment (UE).

As an embodiment, the first node is a user equipment supporting a large delay difference.

As an embodiment, the first node is a user equipment supporting NTN.

As an embodiment, the first node is an aircraft.

As an embodiment, the first node is a vehicle-mounted terminal.

As an embodiment, the first node is a relay.

As an embodiment, the first node is a ship.

As an embodiment, the first node is a user equipment of an industrial internet of things.

As an embodiment, the first node is a device supporting low-latency highly reliable transmission.

For one embodiment, the first receiver 1301 includes at least one of the antenna 452, the receiver 454, the receive processor 456, the multiple antenna receive processor 458, the controller/processor 459, the memory 460, or the data source 467 of embodiment 4.

For one embodiment, the first transmitter 1302 includes at least one of the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller/processor 459, the memory 460, or the data source 467 of embodiment 4.

Example 14

Embodiment 14 illustrates a block diagram of a processing apparatus for use in a second node according to an embodiment of the present application; as shown in fig. 14. In fig. 14, the processing means 1400 in the second node comprises a second transmitter 1401 and a second receiver 1402. In the case of the embodiment 14, the following,

a second transmitter 1401 that transmits a target signal and a first reference signal;

a second receiver 1402 receiving the first signal group;

in embodiment 14, the first reference signal is used to determine a first measurement result, which is used to start a first timer; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine a second reference signal; the duration of the first timer is related to a first time window; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access.

As an example, the second transmitter 1401 transmits the second reference signal.

As an example, the second transmitter 1401 transmits a second signaling; wherein a sender of the first signal group receives the second signaling in the first time window; the second signaling is used for determining the second reference signal, and the time-frequency resources occupied by the second signaling are related to the second reference signal; the expiration time of the first timer is greater than the duration of the first time window; the first timer is stopped.

As an example, the second transmitter 1401 transmits a second signaling and a third signaling; the second receiver 1402 receives a second signal; wherein the sender of the first signal group does not receive the second signaling in the first time window; the second signaling is used for determining the second reference signal, and the time-frequency resources occupied by the second signaling are related to the second reference signal; the expiration time of the first timer is greater than the duration of the first time window; the third signaling is used for feeding back the second signal; the first measurement result is used to trigger the second signal.

As an example, the second transmitter 1401 transmits a second signaling and a fourth signaling; the second receiver 1402 receives a fourth signal; wherein the sender of the first signal group does not receive the second signaling in the first time window; the second signaling is used for determining the second reference signal, and the time-frequency resources occupied by the second signaling are related to the second reference signal; the second signaling is used to indicate the fourth set of time-frequency resources, an expiration time of the first timer is greater than a duration of the first time window, the first timer is stopped, the first measurement result is used to trigger the fourth signal.

As an embodiment, the second transmitter 1401 sends a fourth signaling, which is used for feeding back the fourth signal.

As an embodiment, the expiration time of the first timer is related to a geographical location of a sender of the first signal group.

As an embodiment, the transmission of the first signal group is related to location information of a sender of the first signal group.

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

As one embodiment, the second node is a satellite.

As an embodiment, the second node is a user equipment.

For one embodiment, the second node is a gateway.

As an embodiment, the second node is a base station supporting a large delay difference.

For one embodiment, the second transmitter 1401 includes at least one of the antenna 420, the transmitter 418, the transmission processor 416, the multi-antenna transmission processor 471, the controller/processor 475, and the memory 476 of embodiment 4.

For one embodiment, the second receiver 1802 includes at least one of the antenna 420, the receiver 418, the receive processor 470, the multiple antenna receive processor 472, the controller/processor 475, and the memory 476 of embodiment 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. User equipment, terminal and UE in this application include but not limited to unmanned aerial vehicle, Communication module on the unmanned aerial vehicle, remote control aircraft, the aircraft, small aircraft, the cell-phone, the panel computer, the notebook, vehicle Communication equipment, wireless sensor, network card, thing networking terminal, the RFID terminal, NB-IoT terminal, MTC (Machine Type Communication) terminal, eMTC (enhanced MTC) terminal, the data card, network card, vehicle Communication equipment, low-cost cell-phone, low-cost panel computer, satellite Communication equipment, ship Communication equipment, wireless Communication equipment such as NTN user equipment. The base station or the system 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, a gNB (NR node B) NR node B, a TRP (Transmitter Receiver Point), an NTN base station, a satellite device, a flight platform device, 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 configured for wireless communication, comprising:

a first receiver receiving a target signal and a first reference signal; monitoring a PDCCH in a first time window;

a first transmitter for transmitting a first signal group;

the first receiver receives a second signaling in the first time window, wherein the time-frequency resources occupied by the second signaling are related to a second reference signal, and the second signaling is used for indicating a fourth time-frequency resource set; stopping the first timer; transmitting a fourth signal on the fourth set of time frequency resources;

wherein the first reference signal is used to determine a first measurement result, which is used to start a first timer; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine the second reference signal; the duration of the first timer is related to a first time window; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access; the first measurement result is used to trigger the fourth signal; the first measurement result comprises a measurement value for a beam failure and also comprises a measurement value for a radio link failure; when the first timer is not stopped, any RRC reestablishment Request (RRC Re-reestablishment Request) message related to Radio Link Failure (Radio Link Failure) is not initiated; the fourth signal is used for an RRC reestablishment request; the second signaling is sent over a PDCCH, or the monitoring PDCCH behavior comprises receiving a resource indication for RARs and the second signaling comprises RARs.

2. The first node of claim 1,

the end time of the first time window is related to the distance of the first node to the sender of the first reference signal, and the end time of the first time window is later when the distance is larger.

3. The first node according to claim 1 or 2,

the expiration time of the first timer is later than the expiration time of a beamfailure recovery timer.

4. The first node according to claim 1 or 2,

the first receiver detects a radio link failure according to the first measurement result after detecting a beam failure according to the first measurement result and before receiving the second signaling;

wherein receipt of the second signaling is later than the behavior detects a radio link failure, the second signaling being used to determine the radio link recovery.

5. The first node of claim 1,

an expiration time of the first timer is equal to an end time of the first time window plus a time for receiving a message for a resource indicated by the monitored PDCCH.

6. The first node of claim 1 or 2, wherein the expiration time of the first timer is related to a geographical location of the first node.

7. The first node of claim 6, wherein the transmission of the first signal group is related to location information of the first node.

8. A second node for wireless communication, comprising:

a second receiver receiving the first signal group;

the second transmitter transmits a second signaling, wherein the time-frequency resource occupied by the second signaling is related to a second reference signal, and the second signaling is used for indicating a fourth time-frequency resource set;

the second receiver receiving a fourth signal on the fourth set of time frequency resources;

wherein the first reference signal is used to determine a first measurement result, from which a sender of the first signal group starts a first timer; the duration of the first timer is related to a first time window; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine the second reference signal; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access; the first measurement result is used to trigger the fourth signal; the first measurement result comprises a measurement value for a beam failure and also comprises a measurement value for a radio link failure; a transmitter of the fourth signal transmits an RRC reestablishment Request (RRC Re-establishment Request) regarding a Radio Link Failure (Radio Link Failure) only when the first timer is stopped; the fourth signal is used for an RRC reestablishment request; a sender of the first signal group monitors a PDCCH within the first time window; the second signaling is sent through a PDCCH, or the monitoring action PDCCH includes receiving a resource indication for RARs and the second signaling includes RARs.

9. The second node of claim 8,

the ending time of the first time window is related to the distance from the sender of the first signal group to the second node, and the ending time of the first time window is later when the distance is larger.

10. The second node according to claim 8 or 9,

11. The second node according to claim 8 or 9,

the expiration time of the first timer is equal to or greater than the duration of the first time window.

12. The second node of claim 8,

the second transmitter, which transmits a fourth signaling, the fourth signaling being used for feeding back the fourth signal.

13. The second node of claim 8,

an expiration time of the first timer is related to a geographic location of a sender of the first signal group.

14. The second node according to claim 8 or 13,

the transmission of the first signal group is related to location information of a sender of the first signal group.

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

receiving a target signal and a first reference signal; monitoring a PDCCH in a first time window;

transmitting a first signal group;

receiving a second signaling in the first time window, wherein the time-frequency resources occupied by the second signaling are related to a second reference signal, and the second signaling is used for indicating a fourth set of time-frequency resources; stopping the first timer; transmitting a fourth signal on the fourth set of time frequency resources;

16. The method in a first node according to claim 15,

17. The method in a first node according to claim 15 or 16,

18. The method in a first node according to claim 15 or 16,

after detecting a beam failure according to the first measurement result and before receiving the second signaling, detecting a radio link failure according to the first measurement result;

19. A method in a first node according to claim 15, comprising:

20. The method in a first node according to claim 15, wherein the expiration time of the first timer is related to the geographical location of the first node.

21. A method in a first node according to claim 15 or 20, characterised in that the sending of the first signal group is related to location information of the first node.

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

transmitting a target signal and a first reference signal;

receiving a first signal group;

sending a second signaling, wherein the time-frequency resources occupied by the second signaling are related to a second reference signal, and the second signaling is used for indicating a fourth time-frequency resource set;

receiving a fourth signal on the fourth set of time frequency resources;

wherein the first reference signal is used to determine a first measurement result, from which a sender of the first signal group starts a first timer; the duration of the first timer is related to a first time window; the first measurement result is used to trigger the first set of signals; the first signal group is used to determine the second reference signal; the first signal group occupies a second set of time-frequency resources associated with the target signal; the target signal comprises a broadcast signal; the first reference signal and the second reference signal are different; the first set of signals is used for random access; the first measurement result is used to trigger the fourth signal; the first measurement result comprises a measurement value for a beam failure and also comprises a measurement value for a radio link failure; a transmitter of the fourth signal transmits an RRC reestablishment Request (RRC Re-establishment Request) regarding a Radio Link Failure (Radio Link Failure) only when the first timer is stopped; the fourth signal is used for an RRC reestablishment request; a sender of the first signal group monitors a PDCCH within the first time window; the second signaling is sent over a PDCCH, or the monitoring PDCCH behavior comprises receiving a resource indication for RARs and the second signaling comprises RARs.

23. The method in a second node according to claim 22,

24. The method in a second node according to claim 22,

25. The method in the second node according to claim 22 or 24,

26. A method in a second node according to claim 22, comprising:

27. The method in a second node according to claim 22, wherein the expiration time of the first timer is related to the geographical location of the sender of the first signal group.

28. A method in a second node according to claim 22 or 27, characterised in that the transmission of the first signal group is related to location information of the sender of the first signal group.