CN114499790A

CN114499790A - Method and equipment used for wireless communication

Info

Publication number: CN114499790A
Application number: CN202011160071.XA
Authority: CN
Inventors: 陈宇; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2022-05-13

Abstract

A method and apparatus used for wireless communication includes receiving first signaling, the first signaling configured to configure a first RLC bearer to be in an inactive state; sending a first message; the first message is used for requesting to activate a peer RLC bearer of a first RLC bearer; switching the first RLC bearer to an active state when each condition in a first set of conditions is satisfied; wherein the first RLC bearer is associated with a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, and a communication node on the first link includes the first node and a sender of the first signaling. The first RLC bearer is activated by sending the first message, so that reliability is improved, and power consumption is reduced.

Description

Method and equipment used for wireless communication

Technical Field

The present invention relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus for improving system efficiency, optimizing resource utilization, avoiding resource waste, saving power, reducing service interruption, enhancing service continuity, and improving reliability 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.

In communication, both LTE (Long Term Evolution) and 5G NR relate to accurate reception of reliable information, optimized energy efficiency ratio, determination of information validity, flexible resource allocation, the scalable system structure, high-efficiency non-access stratum information processing, low service interruption and disconnection rate, for low power consumption support, which is for normal communication of base stations and user equipments, for reasonable scheduling of resources, the method has important significance for balancing system load, can be said to be high throughput rate, meets Communication requirements of various services, improves spectrum utilization rate, and improves the quality of service, and is essential for eMBBs (enhanced Mobile BroadBand), URLLC (Ultra Reliable Low Latency Communication) or eMTCs (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), in communication between devices (Device to Device), in communication of unlicensed spectrum, in user communication quality monitoring, in Network planning optimization, in NTN (Non terrestrial Network communication), in TN (terrestrial Network communication), in a Dual connectivity (Dual connectivity) system, in a mixture of the above various communication modes, in radio resource management and codebook selection of multiple antennas, in signaling design, neighborhood management, traffic management, and in beamforming, there is a wide demand for transmission of information, which is divided into broadcast and unicast, and both transmission modes are indispensable for a 5G system, because they help to meet the above demand.

With the continuous increase of the scenes and the complexity of the system, higher requirements are put forward on the reduction of the interruption rate, the reduction of the time delay, the enhancement of the reliability, the enhancement of the stability of the system, the flexibility of the service and the saving of the power, and meanwhile, the compatibility among different versions of different systems needs to be considered when the system is designed.

Disclosure of Invention

In many communication scenarios, especially in relay-enabled networks, involving reliable data transmission, such as low-cost internet of things devices or car networking devices, since these devices may be in a mobile state, the problem of unstable network connections may be encountered, which is much more serious and complex than the movement of terminals in a typical mobile network. Meanwhile, the devices may be in the network of the cellular network, may be out of the coverage of the cellular network, or may be located at the edge of the coverage, which may cause unstable coverage of the cellular network. For some applications, especially those with certain requirements on latency and reliability, the reliability problem needs to be solved, and in case of a full of unstable and unreliable connections, the higher reliability requirement needs to be met. When the terminal is connected with the cellular network, the Uu interface is used, when the terminal is connected with the network through the relay, the PC5 can be used for being connected with the relay, and the terminal can be connected and communicated with the network through a relay mode of L2 or L3. Especially at the cell edge, the terminal, i.e. the remote node, needs to consider what link is satisfactory and also needs to monitor the available relay resources. In order to satisfy the communication, the establishment and activation of the link or links is correlated to the user's situation, and a coordination process is also required to achieve a reliable transmission. In NR network protocols and interfaces specifically designed for communications between nodes such as car networking, sidelinks and related technologies are being used and studied, in past studies, relaying using sidelinks, especially L2 relaying, has not been studied deeply and thoroughly, especially when higher reliability is required, and therefore when a link is broken or fails, a terminal generally needs to spend time searching again and establishing a new link, thereby causing data interruption, and thus the above problems are not solved. The method provided by the application has the advantages that the link is configured at the correct time, particularly a plurality of links are configured, the RLC bearing is managed between the inactive state and the active state and is controlled by the first condition, and the resource waste power can be wasted due to the fact that a plurality of RLC bearings are in the active state at the same time.

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.

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

receiving a first signaling, wherein the first signaling is used for configuring a first RLC bearer to be in an inactive state;

sending a first message; the first message is used for requesting to activate a peer RLC bearer of a first RLC bearer;

switching the first RLC bearer to an active state when each condition in a first set of conditions is satisfied;

wherein the first RLC bearer is associated with a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, and a communication node on the first link includes the first node and a sender of the first signaling.

As an embodiment, the problem to be solved by the present application includes: how to ensure the transmission reliability of a terminal when the terminal is in an unstable network; particularly, when a relay needs to be used, each segment of the relay is controlled by different nodes respectively, and each node may move, so that a communication link needs to be specially managed, otherwise, on one hand, the communication quality is reduced, and on the other hand, if a plurality of links are maintained, the problems of excessive resource consumption, complex management and excessive power consumption can be caused; as proposed in the present application, a better way to balance all these factors is to configure at least one inactive RLC bearer associated with a radio bearer to activate when the conditions are met, so as to avoid the delay of link re-establishment and reduce the power consumption and management complexity, thereby solving the above problems.

As an example, the benefits of the above method include: configuring the inactive RLC bearer, although the bearer itself is already configured, can reduce the time delay for re-establishing a new bearer, and avoid interruption of data communication, and on the other hand, the number of active bearers is less than the total data of the bearers, which can simplify management.

Specifically, according to an aspect of the present invention, in response to receiving the first signaling, the first RLC bearer is established, and the first RLC bearer is set to an inactive state.

Specifically, according to one aspect of the present invention, a first status report is sent when a first set of conditions is satisfied;

wherein the first status report is used to indicate PDCP SDUs received over the first link.

Specifically, according to an aspect of the present invention, the first set of conditions includes that the first node enters an RRC idle state.

Specifically, according to one aspect of the present invention, the method comprises: receiving a second message, a sender of the second message being a second node; a peer RLC bearer of the first RLC bearer is maintained by the second node, the second message indicating at least the latter of an RRC state of the second node and a serving cell in which the second node resides.

Specifically, according to one aspect of the present invention, the method comprises: receiving second signaling indicating an L3 relay configuration for the first link;

when the first link and the second link fail simultaneously, applying the second signaling to configure the first link; when the first link fails and the second link fails, applying the first signaling to configure the first link;

wherein the first signaling indicates an L2 relay configuration for the first link; the communication node on the second link includes the first node and a primary serving cell of the first node.

Specifically, according to one aspect of the present invention, the method comprises: receiving a third signaling;

wherein the first message is used to trigger the third signaling, which is PC5 signaling; the third signaling indicates that the request for activating the opposite terminal RLC bearer of the first RLC bearer is accepted, or the third signaling indicates that the request for activating the opposite terminal RLC bearer of the first RLC bearer is refused; the third signaling indicates rejection of the request for activating the peer RLC bearer of the first RLC bearer when any one of a second set of conditions is satisfied, the second set of conditions including a first timer of a sender of the third signaling being in a running state.

Specifically, according to one aspect of the present invention, the method comprises: receiving a fourth signaling indicating a first cell, the first cell being a primary serving cell of the second node; the fourth signaling indicates a first reception quality, which is a link quality between the second node to the first cell.

Specifically, according to an aspect of the present application, the first node is a user equipment.

Specifically, according to an aspect of the present application, the first node is an internet of things terminal.

In particular, according to an aspect of the present application, the 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 application, the first node is an aircraft.

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

receiving a first message, wherein the first message is used for requesting to activate a peer RLC bearing of a first RLC bearing;

setting the opposite-end RLC bearing of the first RLC bearing as an active state;

wherein the sender of the first message sends the first message when each condition in a first set of conditions is satisfied;

wherein the first RLC bearer is associated with a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, the communication node on the first link includes a sender of the first message, and at least one of a primary serving cell of the sender of the first message and the second node.

Specifically, according to an aspect of the present invention, a fifth signaling is received, and as a response to receiving the fifth signaling, an opposite-end RLC bearer of the first RLC bearer is established, and the opposite-end RLC bearer of the first RLC bearer is set to be in an inactive state.

Specifically, according to an aspect of the present invention, a fifth message is sent, where the fifth message requests to activate a peer RLC bearer of the first RLC bearer.

Specifically, according to an aspect of the present invention, the first set of conditions includes that the sender of the first message enters an RRC idle state.

Specifically, according to one aspect of the present invention, the method comprises: sending a second message, a peer RLC bearer of the first RLC bearer being maintained by the second node, the second message indicating at least the latter of an RRC state of the second node and a serving cell in which the second node resides.

Specifically, according to one aspect of the present invention, the method comprises: sending a third signaling;

wherein the first message is used to trigger the third signaling, which is PC5 signaling; the third signaling instruction accepts the request for activating the opposite-end RLC bearing of the first RLC bearing, or the third signaling instruction rejects the request for activating the opposite-end RLC bearing of the first RLC bearing; the third signaling indicates rejection of the request for activating the peer RLC bearer of the first RLC bearer when any condition in a second set of conditions is met, the second set of conditions including the first timer being in a running state.

Specifically, according to one aspect of the present invention, the method comprises: sending a fourth message indicating a first reception quality, the first reception quality being a link quality of the second node to a primary serving cell of the second node.

Specifically, according to one aspect of the present invention, the method comprises: receiving a sixth signaling;

wherein the sixth signaling is RRC signaling; the sixth signaling indicates to accept the request for activating the opposite-end RLC bearer of the first RLC bearer, or the sixth signaling indicates to reject the request for activating the opposite-end RLC bearer of the first RLC bearer.

Specifically, according to an aspect of the present application, the first node is a relay.

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

sending a first signaling; the first signaling is used for configuring a first RLC bearer to be in an inactive state;

wherein a recipient of the first signaling sends the first message when each condition in a first set of conditions is satisfied; the first message is used for requesting to activate a peer RLC bearer of a first RLC bearer;

wherein, when each condition in a first condition set is satisfied, a receiver of the first signaling switches the first RLC bearer to an active state and sends the first message; the first RLC bearer is associated to a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, and the communication node on the first link includes a recipient of the first signaling and the third node.

Specifically, according to one aspect of the present invention, a first status report is received;

Specifically, according to an aspect of the present invention, the first set of conditions includes that the receiver of the first signaling enters an RRC idle state.

Specifically, according to one aspect of the invention, the method comprises the steps of sending a second signaling, wherein the second signaling indicates the L3 relay configuration of the first link;

when the first link fails simultaneously with the second link, a receiver of the first signaling configures the first link using the second signaling; when the first link fails and the second link does not fail, a receiver of the first signaling applies the first signaling to configure the first link;

wherein the first signaling indicates an L2 relay configuration for the first link; the communication node on the second link comprises a recipient of the first signaling and the three nodes.

Specifically, according to one aspect of the present invention, the method comprises: receiving a fourth message indicating a first reception quality, the first reception quality being a link quality of a second node to a primary serving cell of the second node.

Specifically, according to an aspect of the present invention, the method includes sending a fourth signaling, where the fourth signaling indicates a first cell, and the first cell is a primary serving cell of a second node; the fourth signaling indicates a first reception quality, which is a link quality between the second node to the first cell.

Specifically, according to an aspect of the present invention, the method includes receiving a fifth message, where the fifth message requests to activate a peer RLC bearer of the first RLC bearer.

Specifically, according to one aspect of the present invention, the method comprises: sending a sixth signaling;

wherein the fifth message is used to trigger the sixth signaling, which is RRC signaling; the sixth signaling indicates that the request for activating the opposite-end RLC bearing of the first RLC bearing is accepted, or the sixth signaling indicates that the request for activating the opposite-end RLC bearing of the first RLC bearing is rejected.

Specifically, according to an aspect of the present application, the third node is a base station.

Specifically, according to an aspect of the present application, the third node is a relay.

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

In particular, according to one aspect of the application, the third node is an aircraft.

In particular, according to an aspect of the application, the third node is a group header.

In particular, according to an aspect of the present application, the third node is a satellite.

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

the first receiver is used for receiving a first signaling, wherein the first signaling is used for configuring a first RLC bearer to be in an inactive state;

a first transmitter to transmit a first message; the first message is used for requesting to activate a peer RLC bearer of a first RLC bearer;

a first handler to switch the first RLC bearer to an active state when each condition in a first set of conditions is satisfied;

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

a second receiver receiving a first message used for requesting activation of a peer RLC bearer of a first RLC bearer;

the second processor sets the opposite-end RLC bearing of the first RLC bearing as an active state;

wherein the first RLC bearer is associated with a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, the communication nodes on the first link include a first node, and at least one of a primary serving cell of the first node and the second node.

The application discloses a third node to be used for wireless communication, comprising:

a third transmitter for transmitting the first signaling; the first signaling is used for configuring a first RLC bearer to be in an inactive state;

wherein, when each condition in a first condition set is satisfied, a receiver of the first signaling switches the first RLC bearer to an active state and sends the first message; the first RLC bearer is associated to a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, and the communication nodes on the first link include the first node and the third node.

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

in a scenario involving using sidelink relay, since a user may be mobile, a relay node may also be mobile, even a base station may also be mobile, sometimes there are multiple relay nodes, a user may directly connect to a serving cell, may need to connect to the serving cell through a relay due to coverage problems, or choose to use a relay to connect to a serving cell due to an internal algorithm, these nodes may not have fixed, constant geographical locations and relationships, or may not support an air interface technology of the serving cell, such as millimeter waves, such a scenario is often found in car networking, internet of things, wearable devices, etc., since in sidelink communication, which is often close, this may cause the user to need to change, even need to frequently change the relay node; this leads to a threat to a stable link between the user and the network, and for services with high requirements on delay and reliability, frequent establishment of new connections reduces the service quality of the service. Establishing a user-to-network link, a bearer, and the like for a communication link, particularly when relaying is involved, is complex, requires multiple steps, may involve authentication, and the like, which further increases latency, especially for links for which no link has yet been established. Therefore, the method and the device for configuring the inactive RLC bearers can configure one or more than one inactive RLC bearers, can be used immediately when needed, can be decided by a user and can be activated in an explicit or implicit mode; on the other hand, the configuration in the inactive state is beneficial to reducing complexity, for example, it is ensured that a user has at most one active link or RLC bearer, so that difficulty in management and coordination among a plurality of nodes can be reduced, and when one link fails, the other link can be quickly activated.

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 shows a flow chart of receiving a first signaling, sending a first message according to an 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 communication device and a second communication device according to an embodiment of the present application;

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

FIG. 6 shows a flow diagram of transmission of a wireless signal according to one embodiment of the present application;

FIG. 7 shows a schematic diagram of a network structure according to an embodiment of the present application;

FIG. 8 shows a schematic diagram of a network structure according to an embodiment of the present application;

FIG. 9 shows a schematic diagram of a network architecture according to an embodiment of the present application;

FIG. 10 shows a schematic diagram of a protocol stack according to an embodiment of the present application;

figure 11 illustrates a schematic diagram of a processing apparatus for use in a first node according to one embodiment of the present application;

figure 12 illustrates a schematic diagram of a processing arrangement for use in a second node according to an embodiment of the present application;

fig. 13 illustrates a schematic diagram of a processing device for use in a third node according to an embodiment of the present application.

Detailed Description

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

Example 1

Embodiment 1 illustrates a flow chart of receiving first signaling and sending a first message according to an embodiment of the present application, as shown in fig. 1. In fig. 1, each block represents a step, and it is 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 first signaling in step 101; sending a first message in step 102;

the first signaling is used for configuring a first RLC bearer to be in an inactive state; the first message is used for requesting to activate a peer RLC bearer of a first RLC bearer; switching the first RLC bearer to an active state when each condition in a first set of conditions is satisfied; the first RLC bearer is associated to a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, and a communication node on the first link includes the first node and a sender of the first signaling.

As one embodiment, the first signaling comprises RRC signaling.

For one embodiment, the first signaling comprises PC5-S signaling.

For one embodiment, the first signaling comprises PC5-RRC signaling.

As an embodiment, the first signaling comprises rrcreeconfiguration.

As an embodiment, the first signaling includes a partial cell in rrcreconconfiguration.

As an embodiment, the first signaling comprises rrcreconconfigurationsildelink.

As an embodiment, the first RLC bearer is an RLC bearer.

As an embodiment, the first RLC bearer includes a mode of RLC including AM and UM.

As an embodiment, the first RLC bearer includes a length of a sequence number used by the RLC.

As one embodiment, the first signaling includes RLC-Config.

As an embodiment, the first signaling comprises part of the fields in the RLC-Config.

As an embodiment, the first signaling comprises SL-RLC-Config.

As an embodiment, the first signaling comprises part of the fields in a SL-RLC-Config.

As an embodiment, the first signaling comprises SL-ConfigDedicatedNR.

For one embodiment, the first RLC bearer is configured to be in an inactive state including an inactive state.

For one embodiment, the first RLC bearer is configured to be in an inactive state including a deactivated state.

For one embodiment, the first RLC bearer is configured in an inactive state including a suspended state.

For one embodiment, the first RLC bearer is configured in an inactive state including a state that requires activation to be available.

As an embodiment, the first radio bearer is an RB (radio bearer).

As an embodiment, the first radio bearer is a bearer of a Uu port.

As one embodiment, the first wireless bearer is a PC5 port bearer.

As one embodiment, the first radio bearer is in a state of normal communication.

For one embodiment, the first radio bearer is in a state of normal communication without activation.

For one embodiment, the first radio bearer is in a state other than inactive.

As one embodiment, the first radio bearer is in a state other than inactive.

As an embodiment, the first radio bearer is in a state other than suspended.

For one embodiment, the first radio bearer is in an active state.

For one embodiment, the first radio bearer is in an activated state.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: the active state of the first RLC bearer includes a state other than an inactive state.

As an embodiment, the sentence "switch the first RLC bearer to the active state" includes the following meaning: the active state of the first RLC bearer comprises a state in normal communication.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: the active state of the first RLC bearer includes a state in which normal communication is possible without activation.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: the active state of the first RLC bearer comprises a state beyond inactive.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: the active state of the first RLC bearer comprises a state beyond deactivated.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: the active state of the first RLC bearer comprises being in an activated state.

As an embodiment, the sentence "switch the first RLC bearer to the active state" includes the following meaning: the active state of the first RLC bearer comprises a state beyond suspended.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: and converting the state of the first RLC bearer from an inactive state to an active state.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: activating the first RLC bearer.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: and activating the first RLC bearer so that the first RLC bearer enters an active state.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: and activating the RLC entity corresponding to the first RLC bearer.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: continuing (resume) the first RLC bearer.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: and setting the state variable of the RLC entity corresponding to the first RLC bearer to be in a modifiable state.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: and importing the state variable of the RLC entity corresponding to the first RLC bearer.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: and setting the state variable of the RLC entity corresponding to the first RLC bearer as an initial value.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: and informing a PDCP layer that the first RLC bearing or the RLC layer corresponding to the first RLC bearing enters an active state.

As an example, the sentence "switch the first RLC bearer to the active state" includes the following meanings: notifying a PDCP layer that the first RLC bearer or an RLC layer corresponding to the first RLC bearer is resumed (resumed).

As an embodiment, the first signaling comprises SL-RLC-BearerConfig.

For one embodiment, the first signaling comprises sl-RLC-BearerConfigIndex.

For one embodiment, the first signaling comprises an sl-ServedRadioBearer.

As one example, the sl-ServerRadioBearer indicates SLRB-Uu-ConfigIndex.

As one embodiment, the SLRB-Uu-ConfigIndex indicates the first radio bearer.

As an embodiment, the SLRB-Uu-ConfigIndex uniquely determines the first radio bearer.

In one embodiment, the first radio bearer is mapped to the first RLC bearer.

As one embodiment, the first signaling indicates that the first radio bearer is mapped to the first RLC bearer.

As an embodiment, the configuration of the first RLC bearer included in the first signaling includes an identity of the first radio bearer.

As an embodiment, the configuration of the first RLC bearer included in the first signaling includes an index of the first radio bearer.

As one embodiment, the first signaling comprises sl-MAC-logical channelconfig.

As an embodiment, the 0 th signaling configures the second RLC bearer to be in an active state.

As one embodiment, the 0 th signaling indicates that the second RLC bearer is associated with the first radio bearer.

As an embodiment, the 0 th signaling configures N RLC bearers associated with the first radio bearer, where N is a positive integer greater than 1, where N-m of the RLC bearers are in an inactive state; wherein m is a positive integer.

As a sub-embodiment of this embodiment, m is equal to 1.

As a sub-embodiment of this embodiment, the first radio bearer is mapped to any one of the N RLC bearers.

As a sub-embodiment of this embodiment, the data carried by the first radio bearer is sent only through an active RLC bearer of the N RLC bearers.

For one embodiment, the first radio bearer comprises a SRB.

As one embodiment, the first radio bearer includes a DRB.

As one embodiment, the first radio bearer comprises an MRB.

As one embodiment, the first radio bearer includes an SLRB.

As one embodiment, the first RLC bearer is configured in AM mode.

As one embodiment, the first RLC bearer is configured in UM mode.

For one embodiment, the first link includes a radio link.

For one embodiment, the first link includes a link.

For one embodiment, the first link comprises a radio link of a Uu interface.

For one embodiment, the first link comprises a wireless link of a PC5 interface.

For one embodiment, the first link includes an SRB.

For one embodiment, the first link includes a DRB.

For one embodiment, the first link includes an SLRB.

For one embodiment, the first link comprises a physical layer link.

For one embodiment, the first link includes a beam.

As an embodiment, the first link is uniquely determined by one SSB.

As one embodiment, the first link is uniquely determined by a plurality of SSBs.

As an embodiment, the first link is uniquely determined by one CSI-RS.

As an embodiment, the first link is uniquely determined by a plurality of CSI-RSs.

As an embodiment, the first link is determined by one of a set of reference signals indicated by failureDetectionResources.

As one embodiment, the first link is determined by one of a set of reference signals indicated by candidatebeamstlist.

As an embodiment, the serving cell of the first node configures failureDetectionResources and candidateBeamRSList.

As an embodiment, the relay node of the first node configures failureDetectionResources and candidatebiamrslist.

As an embodiment, the internal algorithms of the first node default configuration failureDetectionResources and candidatebeamrslst.

For one embodiment, the first link is a first one of ssb-PositionsInBurst.

As one embodiment, the first link is the first radio bearer.

As one embodiment, the first radio bearer is associated with the first link.

As an embodiment, the data transmitted by the first radio bearer occupies the first link.

As an embodiment, the first link is configured by the first signaling.

As one embodiment, the first signaling includes an identity of the first link.

As one embodiment, the first link is configured for a serving cell of the first node.

As an embodiment, the first link is determined by one of the measurement objects of the serving cell configuration of the first node.

As an embodiment, the first link is a wireless link receiving the first signaling configuration.

As an embodiment, the first link is a radio link corresponding to an active RLC bearer.

For one embodiment, the first link is an air interface.

As an embodiment, the first link is associated with an active one of the RLC bearers associated with the first radio bearer.

As one embodiment, the first link is associated with the first radio bearer.

For one embodiment, the first link is associated with one MAC entity.

As an embodiment, the first link comprises a default BWP.

For one embodiment, the first link comprises a link between the first node and a primary serving cell.

For one embodiment, the first link comprises a link between the first node and a camped cell.

As an embodiment, the first link comprises a link between the first node and a cell with a strongest signal.

For one embodiment, the first link failure comprises a radio link failure.

For one embodiment, the first link failure comprises a beam failure.

As an embodiment, the first link failure comprises HARQ reaching a maximum number of retransmissions.

For one embodiment, the first link failure comprises RLC reaching a maximum number of retransmissions.

For one embodiment, the first link failure comprises expiration of a timer associated with the first link.

For one embodiment, the first link failure comprises a T304 expiration.

For one embodiment, the first link failure comprises a T312 expiration.

For one embodiment, the first link failure comprises a T316 expiration.

For one embodiment, the first link failure comprises a T310 expiration.

For one embodiment, the first link failure comprises a transmission failure of an SRB.

For one embodiment, the first link failure comprises a quality of a reference signal associated with the first link being below a given threshold.

For one embodiment, the first link failure comprises a delay of data transmitted on the first link exceeding a given threshold.

As an embodiment, the first link failure comprises a BLER of data transmitted on the first link exceeding a given threshold.

For one embodiment, the first link failure comprises a BER of data transmitted on the first link exceeding a given threshold.

For one embodiment, the first link failure comprises a failure to receive a response to signaling sent on the first link.

As one embodiment, the sender of the first signaling comprises a second node.

As one embodiment, the sender of the first signaling comprises a third node.

As one embodiment, the communication nodes on the first link include the first node and the second and third nodes.

As an embodiment, a peer RLC bearer of the first RLC bearer is maintained by the second node.

As an embodiment, the second node is a relay node of the first link.

As one embodiment, the second node is a recipient of the first message.

In one embodiment, the second node is a node other than a node included in a measurement object indicated by a serving cell of the first node.

As an embodiment, the third node is a serving cell of the first node.

As an embodiment, the third node is a primary serving cell of the first node.

As an embodiment, the second node is a relay node of the first node.

As an embodiment, the first message includes RRC (Radio Resource Control) signaling.

For one embodiment, the first message includes PC5 signaling.

For one embodiment, the first message includes a MAC CE.

As an embodiment, the explicit indication of the first message requests activation of a peer RLC bearer of the first RLC bearer.

As an embodiment, the implicit indication of the first message requests activation of a peer RLC bearer of the first RLC bearer.

As a sub-embodiment of this embodiment, the first message comprises msg1 (message 1).

As a sub-embodiment of this embodiment, the first message comprises msgA (message a).

As a sub-embodiment of this embodiment, the first message includes msg1 (message 1) sent on a particular resource.

As a sub-embodiment of this embodiment, the first message comprises a preamble using a special format.

As a sub-embodiment of this embodiment, the first message comprises msgA (message a) sent on a specific resource.

As a sub-embodiment of this embodiment, the first signaling configures the first message.

As a sub-embodiment of this embodiment, the serving cell of the first node configures the first message.

As a sub-embodiment of this embodiment, the first message includes RLC data, and the data belonging to the first RLC bearer is received and used to request activation of a peer RLC bearer of the first RLC bearer.

As a sub-embodiment of this embodiment, the first message includes an LCID in a MAC PDU, where the LCID is an identity of the first RLC bearer, and the LCID is used to request activation of a peer RLC bearer of the first RLC bearer.

As a sub-embodiment of this embodiment, the first message includes an LCID in the MAC PDU, where the LCID is an identity of a peer RLC bearer of the first RLC bearer, and the received LCID is used to request activation of the peer RLC bearer of the first RLC bearer.

As one embodiment, the communication node on the first link comprises a relay node.

For one embodiment, the first link failure comprises a failure of a PC5 interface between the first node and the second node.

As a sub-embodiment of this embodiment, the failure comprises a radio link failure.

As a sub-embodiment of this embodiment, the failure comprises a beam failure.

As a sub-embodiment of this embodiment, the failure comprises an RLC retransmission reaching a maximum number of times.

As a sub-embodiment of this embodiment, the failure comprises a compatibility error.

As an embodiment, the first signaling carries an identity of the first node.

As an embodiment, the first node is a recipient of the first signaling, including that the first signaling carries an identity of the first node.

As an embodiment, the MAC PDU carrying the first signaling carries the identity of the first node.

As an embodiment, the MAC PDU carrying the first signaling and the physical layer signaling scheduling the MAC PDU carry the identity of the first node together.

As an embodiment, the link quality includes a quality of a radio link obtained by Radio Link Monitoring (RLM).

As a sub-embodiment of this embodiment, the quality of the wireless link comprises RSRP.

As an embodiment, the link quality includes a link quality obtained by measurement.

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 corresponds to the first node in this application.

As an embodiment, the UE201 corresponds to the second 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 UE201 supports V2X transmission.

As an embodiment, the UE201 supports relay transmission.

As an embodiment, the UE241 corresponds to the first node in this application.

As an embodiment, the UE241 corresponds to the second node in this application.

As an embodiment, the UE241 supports transmission in a non-terrestrial network (NTN).

As an embodiment, the UE241 supports transmission in a large delay-difference network.

As an embodiment, the UE241 supports V2X transmission.

As an embodiment, the UE241 supports relay transmission.

In one embodiment, the UE201 and the UE241 use a sidelink transmission.

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

As an embodiment, the gNB203 supports V2X transmissions.

As an embodiment, the gNB203 supports MBS transmissions.

As an embodiment, the gNB203 supports MBMS transmission.

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 a radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture for the control plane 300 between a first 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 for the first node and the second node in the user plane 350 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. Also included are a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.).

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

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

As an embodiment, the first signaling in the present application is generated in the RRC306 or a non-access stratum (NAS).

As an embodiment, the first message in the present application is generated in the PHY301 or the PHY351 or the MAC302 or the MAC352 or the RLC303 or the RLC353 or the RRC306 or a non-access stratum (NAS).

As an embodiment, the first status report in this application is generated in the RLC303, the RLC353, the PDCP304, or the PDCP 354.

As an embodiment, the second message in the present application is generated in the PHY301 or the PHY351 or the MAC302 or the MAC352 or the RLC303 or the RLC353 or the RRC306 or a non-access stratum (NAS).

As an embodiment, the second signaling in the present application is generated in the RRC306 or a non-access stratum (NAS).

As an embodiment, the third signaling in the present application is generated in the RRC306 or a non-access stratum (NAS).

As an embodiment, the fourth signaling in this application is generated in the RRC306 or a non-access stratum (NAS).

As an embodiment, the fifth signaling in the present application is generated in the RRC306 or a non-access stratum (NAS).

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

As an embodiment, the fifth message in the present application is generated in the PHY301 or the PHY351 or the MAC302 or the MAC352 or the RLC303 or the RLC353 or the RRC306 or a non-access stratum (NAS).

Example 4

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

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

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

In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper layer data packets from the core network are provided to the controller/processor 475. The controller/processor 475 implements the functionality of 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 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 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 streams from 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 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 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 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. 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 first signaling, wherein the first signaling is used for configuring a first RLC bearer to be in an inactive state; sending a first message; the first message is used for requesting to activate a peer RLC bearer of a first RLC bearer; switching the first RLC bearer to an active state when each condition in a first set of conditions is satisfied; wherein the first RLC bearer is associated with a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, and a communication node on the first link includes the first node and a sender of the first signaling.

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 first signaling, wherein the first signaling is used for configuring a first RLC bearer to be in an inactive state; sending a first message; the first message is used for requesting to activate a peer RLC bearer of a first RLC bearer; switching the first RLC bearer to an active state when each condition in a first set of conditions is satisfied; wherein the first RLC bearer is associated with a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, and a communication node on the first link includes the first node and a sender of the first signaling.

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 first message, wherein the first message is used for requesting to activate a peer RLC bearing of a first RLC bearing; setting the opposite-end RLC bearing of the first RLC bearing as an active state; wherein the sender of the first message sends the first message when each condition in a first set of conditions is satisfied; wherein the first RLC bearer is associated with a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, the communication nodes on the first link include a first node, and at least one of a primary serving cell of the first node and the second node.

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 first message, wherein the first message is used for requesting to activate a peer RLC bearing of a first RLC bearing; setting the opposite-end RLC bearing of the first RLC bearing as an active state; wherein the sender of the first message sends the first message when each condition in a first set of conditions is satisfied; wherein the first RLC bearer is associated with a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, the communication nodes on the first link include a first node, and at least one of a primary serving cell of the first node and the second node.

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: sending a first signaling; the first signaling is used for configuring a first RLC bearer to be in an inactive state; wherein a recipient of the first signaling sends the first message when each condition in a first set of conditions is satisfied; the first message is used for requesting to activate a peer RLC bearer of a first RLC bearer; wherein, when each condition in a first condition set is satisfied, a receiver of the first signaling switches the first RLC bearer to an active state and sends the first message; the first RLC bearer is associated to a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, and the communication nodes on the first link include the first node and the third node.

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: sending a first signaling; the first signaling is used for configuring a first RLC bearer to be in an inactive state; wherein a recipient of the first signaling sends the first message when each condition in a first set of conditions is satisfied; the first message is used for requesting to activate a peer RLC bearer of a first RLC bearer; wherein, when each condition in a first condition set is satisfied, a receiver of the first signaling switches the first RLC bearer to an active state and sends the first message; the first RLC bearer is associated to a first radio bearer; the first radio bearer is in an active state, the first set of conditions includes a first link failure, and the communication nodes on the first link include the first node and the third node.

As an embodiment, the first communication device 450 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 second communication device 410 corresponds to a third 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 450 is a relay.

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

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

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

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

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

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

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 message.

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

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

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

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

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 message.

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 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 fourth message.

For one embodiment, the transmitter 416 (including the antenna 420), the transmit processor 412, and the controller/processor 440 are used to transmit the first signaling in this application.

For one embodiment, transmitter 416 (including antenna 420), transmit processor 412, and controller/processor 440 are used to send the second signaling in this application.

For one embodiment, the transmitter 416 (including the antenna 420), the transmit processor 412, and the controller/processor 440 are used to transmit the fourth signaling.

For one embodiment, transmitter 416 (including antenna 420), transmit processor 412, and controller/processor 440 are used to send the sixth signaling in this application.

For one embodiment, receiver 416 (including antenna 420), receive processor 412, and controller/processor 440 are used to receive the first status report in this application.

For one embodiment, receiver 416 (including antenna 420), receive processor 412, and controller/processor 440 are used to receive the fifth message.

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, U01 corresponds to the first node of the present application, U02 corresponds to the second node of the present application, and U03 corresponds to the third node of the present application, and it is specifically noted that the sequence in the present example does not limit the sequence of signal transmission and the sequence of implementation in the present application, and steps in F51 and F52 are optional.

For theFirst node U01Receiving a second message in step S5101; receiving a fourth signaling in step S5102; receiving a second signaling in step S5103; receiving a first signaling in step S5104; sending a first message in step S5105; receiving a third signaling in step S5106; a first status report is sent in step S5107.

For theSecond node U02Transmitting the second message in step S5201; transmitting the fourth message in step S5202; receiving the first message in step S5203; the third signaling is transmitted in step S5204.

For theThird node U03Receiving the fourth message at step S5301; transmitting the fourth signaling in step S5302; transmitting the second signaling in step S5303; transmitting the first signaling in step S5304; the first status report is received in step S5305.

In embodiment 5, the first signaling is used to configure a first RLC bearer in an inactive state; the first message is used for requesting to activate a peer RLC bearer of a first RLC bearer; switching the first RLC bearer to an active state when each condition in a first set of conditions is satisfied;

For one embodiment, the second node U02 is a relay node.

For one embodiment, the second node U02 is a UE.

For one embodiment, the second node U02 is an IAB node.

As an embodiment, the second node U02 is a relay for the first node U01.

For one embodiment, the third node U03 is a PCell of the first node U01.

For one embodiment, the third node N03 is the PSCell of the first node U01.

For one embodiment, the third node N03 is an MCG of the first node U01.

For one embodiment, the third node N03 is the SCG of the first node U01.

For one embodiment, the third node N03 is a target cell for the first node U01.

For one embodiment, the third node N03 is the source cell of the first node U01.

As an embodiment, the third node U03 is a relay for the first node U01.

As an embodiment, the peer RLC bearer of the first RLC bearer is maintained by the second node U02, and the second message indicates at least the latter of the RRC state of the second node and the serving cell in which the second node U02 resides.

As a sub-embodiment of this embodiment, the RRC state of the second node U02 includes one of Connected, Idle, and Inactive.

As a sub-embodiment of this embodiment, the second message indicates the identity of the serving cell in which the second node U02 resides.

As a sub-embodiment of this embodiment, the second message indicates a cell identity of a serving cell in which the second node U02 resides.

As a sub-embodiment of this embodiment, the second message indicates a physical cell identity of a serving cell in which the second node U02 resides.

As a sub-embodiment of this embodiment, the second message indicates the SSB of the serving cell in which the second node U02 resides.

As a sub-embodiment of this embodiment, the second message indicates CSI-RS of a serving cell in which the second node U02 resides.

As a sub-embodiment of this embodiment, the second message is sent by way of broadcast.

As a sub-embodiment of this embodiment, the second message is sent by means of unicast.

As a sub-embodiment of this embodiment, the second message comprises a PC5-RRC message.

As a sub-embodiment of this embodiment, the second message comprises a PC5-S message.

As a sub-embodiment of this embodiment, the second message is sent over a broadcast channel.

As a sub-embodiment of this embodiment, the second message is sent periodically.

As a sub-embodiment of this embodiment, the second node U02 is the group head (group header) of the first node U01.

For one embodiment, the third node U03 is the serving cell of the second node U02.

For one embodiment, the third node U03 is the primary serving cell for the second node U02.

For one embodiment, the third node U03 is a secondary serving cell of the second node U02.

For one embodiment, the third node U03 has a signaling connection with the primary serving cell of the second node U02.

As an embodiment, the fourth message indicates a first reception quality, which is a link quality of the second node U02 to the primary serving cell of the second node U02.

As a sub-embodiment of this embodiment, the first reception quality comprises RSRP.

As a sub-embodiment of this embodiment, the first reception quality comprises RSRQ.

As a sub-embodiment of this embodiment, the first reception quality comprises an SNR.

As a sub-embodiment of this embodiment, the second node determines the link quality by measuring a reference signal sent by a primary serving cell of the second node U02.

As a sub-embodiment of this embodiment, the second node determines the link quality by measuring a reference signal sent by a primary serving cell of the second node U02 on a link used to determine the link quality.

As a sub-embodiment of this embodiment, the fourth message indicates the identity of the primary serving cell of the second node U02.

As an embodiment, the fourth signaling indicates a first cell, which is a primary serving cell of the second node U02; the fourth signaling indicates a first reception quality, which is a link quality between the second node U02 to the first cell.

As a sub-embodiment of this embodiment, the fourth message is used to generate the fourth signaling.

As a sub-embodiment of this embodiment, the first cell is the third node U03.

As a sub-embodiment of this embodiment, the first cell is a cell other than the third node U03.

As an embodiment, the second signaling indicates an L3 relay configuration of the first link; when the first link and the second link fail simultaneously, the first transmitter applies the second signaling to configure the first link; when the first link fails and the second link fails, the first transmitter applies the first signaling to configure the first link; wherein the first signaling indicates an L2 relay configuration for the first link; the communication nodes on the second link include the first node U01 and the first node U01 primary serving cell.

For one embodiment, the communication nodes of the second link include the first node U01 and the second node U02.

For one embodiment, the communication nodes of the second link include the first node U01 and the third node U03.

For one embodiment, the communication nodes of the second link include the first node U01 and the second node U02 and the third node U03.

As an embodiment, the first RLC bearer is a bearer of a PC5 interface, and one end of the first RLC bearer is maintained by the first node U01, and the other end of the first RLC bearer is maintained by the second node U02.

As an embodiment, the first RLC bearer is an RLC bearer between the first node U01 and the second node U02, and a peer RLC bearer of the first RLC bearer is a part of the first RLC bearer maintained by the second node U02.

As a sub-embodiment of this embodiment, the portion of the first RLC bearer maintained by the second node U02 comprises an RLC entity of the second node U02 for receiving data of the first RLC bearer.

As a sub-embodiment of this embodiment, the portion of the first RLC bearer maintained by the second node U02 includes the RLC entity of the second node U02 for sending data of the first RLC bearer.

As a sub-embodiment of this embodiment, the part of the first RLC bearer maintained by the second node U02 comprises the RLC entity of the second node U02 belonging to the data of the first RLC bearer.

As a sub-embodiment of this embodiment, the part of the first RLC bearer maintained by the second node U02 includes the RLC entities of the second node U02 belonging to the data of the first RLC bearer and their mapping relationship with the radio bearer and state variables.

For one embodiment, the first RLC bearer is configured by the third node U03.

As one embodiment, the L3 relay is a layer 3 relay; the L2 relay is a layer 2 relay.

For one embodiment, the second link includes a radio link.

For one embodiment, the second link includes a link.

For one embodiment, the second link comprises a radio link of a Uu interface.

For one embodiment, the second link comprises a wireless link of a PC5 interface.

For one embodiment, the second link includes an SRB.

For one embodiment, the second link includes a DRB.

For one embodiment, the second link includes a SLRB.

For one embodiment, the second link comprises a physical layer link.

For one embodiment, the second link includes a beam.

As an embodiment, the second link is uniquely determined by one SSB.

As one embodiment, the second link is uniquely determined by a plurality of SSBs.

As an embodiment, the second link is uniquely determined by one CSI-RS.

As an embodiment, the second link is uniquely determined by a plurality of CSI-RSs.

As an embodiment, the second link is determined by one of a set of reference signals indicated by failureDetectionResources.

As one embodiment, the second link is determined by one of a set of reference signals indicated by candidatebeamstlist.

For one embodiment, the second link is a first one of ssb-PositionsInBurst.

As one embodiment, the second link is the first radio bearer.

As one embodiment, the first radio bearer is associated with the second link.

As an embodiment, the data transmitted by the first radio bearer occupies the second link.

As an embodiment, the second link is configured by the first signaling.

As one embodiment, the first signaling includes an identity of the second link.

As one embodiment, the second link is configured for a serving cell of the first node.

As an embodiment, the second link is determined by one of the measurement objects of the serving cell configuration of the first node.

As an embodiment, the second link is a wireless link receiving the first signaling configuration.

As an embodiment, the second link is a radio link corresponding to an active RLC bearer.

For one embodiment, the second link is an air interface.

As an embodiment, the second link is associated with an active one of the RLC bearers associated with the first radio bearer.

As one embodiment, the second link is associated with the first radio bearer.

For one embodiment, the second link is associated with a MAC entity.

As an embodiment, the second link comprises a default BWP.

For one embodiment, the second link comprises a link between the first node and a primary serving cell.

For one embodiment, the second link comprises a link between the first node and a camped cell.

As an embodiment, the second link comprises a link between the first node and a cell with a strongest signal.

For one embodiment, the second link failure comprises a radio link failure.

For one embodiment, the second link failure comprises a beam failure.

As an embodiment, the second link failure comprises HARQ up to a maximum number of retransmissions.

For one embodiment, the second link failure comprises RLC up to a maximum number of retransmissions.

For one embodiment, the second link failure comprises expiration of a timer associated with the second link.

For one embodiment, the second link failure comprises a T304 expiration.

For one embodiment, the second link failure comprises a T312 expiration.

For one embodiment, the second link failure comprises a T316 expiration.

For one embodiment, the second link failure comprises a T310 expiration.

For one embodiment, the second link failure comprises a transmission failure of an SRB.

For one embodiment, the second link failure comprises a quality of a reference signal associated with the second link being below a given threshold.

For one embodiment, the failure of the second link includes a delay of data transmitted on the second link exceeding a given threshold.

As an embodiment, the second link failure comprises a BLER of data transmitted on the second link exceeding a given threshold.

For one embodiment, the second link failure comprises a BER of data transmitted on the second link exceeding a given threshold.

For one embodiment, the second link failure comprises a failure to receive a response to signaling sent on the second link.

For one embodiment, the second link is a link of a PC5 interface.

As an embodiment, the second link is a link of a Uu interface.

For one embodiment, the second link is different from the first link.

As an embodiment, said sentence said applying said second signaling to configure said first link comprises configuring a relay comprised by said first link as an L3 relay.

As an embodiment, the sentence configuring the first link by applying the first signaling includes configuring a relay included in the first link as an L2 relay.

As an embodiment, the first link and the second link both support RRC transmission.

As an embodiment, the second link is used for transmitting RRC messages of the Uu interface.

For one embodiment, the second link is an SRB and the first link is a DRB.

In one embodiment, the second link is used for transmitting signaling, and the first link is used for transmitting data.

As an embodiment, the RB types supported by the first link and the second link are different.

As an embodiment, the first message is used to trigger the third signaling, which is PC5 signaling; the third signaling instruction accepts the request for activating the opposite-end RLC bearing of the first RLC bearing, or the third signaling instruction rejects the request for activating the opposite-end RLC bearing of the first RLC bearing; the third signaling indicates rejection of the request for activating the peer RLC bearer of the first RLC bearer when any one of a second set of conditions is satisfied, the second set of conditions including a first timer of a sender of the third signaling being in a running state.

As a sub-embodiment of this embodiment, the third signaling is PC5-RRC signaling.

As a sub-embodiment of this embodiment, the third signaling is PC5-S signaling.

As a sub-implementation of this embodiment, the action accepting the request for activating the peer RLC bearer of the first RLC bearer includes the second node U02 activating the peer RLC bearer of the first RLC bearer.

As a sub-implementation of this embodiment, the behavior accepting the request for activating the peer RLC bearer of the first RLC bearer includes the second node U02 forwarding the request for activating the peer RLC bearer of the first RLC bearer.

As a sub-embodiment of this embodiment, the behavior accepts the request for activating the peer RLC bearer of the first RLC bearer, including that the peer RLC bearer of the first RLC bearer is activated.

As a sub-embodiment of this embodiment, the first timer includes T304.

As a sub-embodiment of this embodiment, the first timer includes T310.

As a sub-embodiment of this embodiment, the first timer includes T312.

As a sub-embodiment of this embodiment, the first timer includes T316.

As a sub-embodiment of this embodiment, the first timer is started when the second node U02 starts a handover.

As a sub-embodiment of this embodiment, the first timer is started when the second node U02 starts to perform conditional reconfiguration.

As a sub-embodiment of this embodiment, the first timer is started when the second node U02 experiences a radio link failure.

As a sub-embodiment of this embodiment, the first timer is started when the second node U02 starts an identity update.

As an embodiment, the first status report is used to indicate PDCP SDUs received over the first link.

For one embodiment, the first status report includes a PDCP status report.

For one embodiment, the first status report includes an RLC status report.

As one embodiment, the first status report is used to retransmit data on the first RLC bearer.

For one embodiment, the first RLC bearer is in AM mode or UM mode.

As an embodiment, the first status report includes a first bitmap, each bit in the first bitmap corresponds to one PDCP SDU, and the first bit is any bit in the first bitmap; the first bit is 0, which means that the PDCP SDU corresponding to the bit is not correctly received; the first bit being 1 indicates that the PDCP SDU corresponding to the bit is correctly received.

As an embodiment, the first status report includes a first bitmap, each bit in the first bitmap corresponds to one PDCP SDU, and the first bit is any bit in the first bitmap; the first bit is 0, which means that the PDCP SDU corresponding to the bit is correctly received; the first bit being 1 indicates that the PDCP SDU corresponding to the bit was not correctly received.

As a sub-embodiment of this embodiment, the second node manages a peer RLC bearer of the first RLC bearer.

As a sub-embodiment of this embodiment, the second node establishes a peer RLC bearer of the first RLC bearer.

As a sub-embodiment of this embodiment, the second node controls a peer RLC bearer of the first RLC bearer.

As an embodiment, the third signaling is feedback of the first message.

For one embodiment, the second node U02 is triggered to send the third signaling after the second node U02 receives the first message.

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, U11 corresponds to the first node of the present application, U12 corresponds to the second node of the present application, and U13 corresponds to the third node of the present application, and it is specifically noted that the sequence in the present example does not limit the sequence of signal transmission and the sequence of implementation in the present application, and steps in F61 and F62 are optional. The steps required in example 6, but not shown in detail, can be referred to example 5.

For theFirst node U11Receiving a second signaling in step S6101; receiving a first signaling in step S6102; sending a first message in step S6103; the third signaling is received in step S6104.

For theSecond node U12Receiving a fifth signaling in step S6201; receiving the first message in step S6202; receiving the fifth message in step S6203; receiving a sixth signaling in step S6204; the third signaling is sent in step S6205.

For theThird node U13Transmitting the fifth signaling at step S6301; transmitting the second signaling in step S6302; transmitting the first signaling in step S6303; receiving the fifth message in step S6304; the sixth signaling is sent in step S6305.

For one embodiment, the first node U11 is a UE.

For one embodiment, the first node U11 is a remote ue (remote ue).

For one embodiment, the first node U12 is a UE.

As an example, the first node U12 is a relay (relay).

For one embodiment, the third node U13 is a serving cell of the first node U11.

For one embodiment, the third node U13 is the primary serving cell for the first node U11.

For one embodiment, the third node U13 is a serving cell of the second node U12.

For one embodiment, the third node U13 is the primary serving cell of the second node U12.

For one embodiment, the first RLC bearer is a bearer of a PC5 interface.

As an embodiment, the first RLC bearer is an RLC bearer between the first node U11 and the second node U12, the second RLC bearer is an RLC bearer between the second node U12 and the third node U13, and the second RLC bearer is associated with the first radio bearer; and the opposite-end RLC bearing of the first RLC bearing is the second RLC bearing.

As one embodiment, the first radio bearer is associated with both the first RLC bearer and the second RLC bearer; the first RLC bearer is an RLC bearer between the first node U11 and the second node U12; the second RLC bearer is an RLC bearer between the second node U12 and the third node U13; the second RLC bearer is an opposite-end RLC bearer of the first RLC bearer.

For one embodiment, the first node U11 requests the third node U13 to establish a communication link, the communication nodes of which include the first node U11, the second node U12 and the third node U13.

As a sub-embodiment of this embodiment, said fifth signaling indicates a part between said second node U12 and said third node U13 establishing said communication link; the portion between the second node U12 and the third node U13 comprises the second RLC bearer.

As a sub-embodiment of this embodiment, the fifth signaling indicates that the second RLC bearer is established.

As a sub-embodiment of this embodiment, the fifth signaling is used to configure the second RLC bearer.

As a sub-embodiment of this embodiment, the fifth signaling configuration establishes the mode of the second RLC bearer.

As a sub-embodiment of this embodiment, the fifth signaling configuration establishes a length of a sequence number of the second RLC bearer.

As an embodiment, in response to receiving the fifth signaling, the second node U12 establishes a peer RLC bearer of the first RLC bearer, and sets the peer RLC bearer of the first RLC bearer to an inactive state.

As an embodiment, in response to receiving the fifth signaling, the second node U12 establishes the second RLC bearer and sets the second RLC bearer to an inactive state.

As one embodiment, the fifth signaling indicates that the second RLC bearer is associated with the first radio bearer.

As an embodiment, the fifth signaling includes rrcreeconfiguration.

As an embodiment, the fifth signaling includes rrcreconconfigurationnr.

As an embodiment, the fifth signaling comprises RRCReconfigurationSidelink.

As an embodiment, the fifth signaling includes drb-Identity of the first radio bearer.

For one embodiment, the fifth signaling includes srb-Identity of the first radio bearer.

As an embodiment, the fifth signaling includes an identity of the first RLC bearer.

As an embodiment, the fifth signaling comprises RLC-BearerConfig.

As an embodiment, the fifth signaling indicates that the second RLC bearer relates to the first node U11.

As an embodiment, the second signaling indicates an L3 relay configuration of the first link; when the first link fails simultaneously with the second link, the first node U11 applies the second signaling to configure the first link; when the first link fails and the second link fails, the first node U11 applies the first signaling to configure the first link; wherein the first signaling indicates an L2 relay configuration for the first link; the communication nodes on the second link include the first node U11 and the first node U11 primary serving cell.

As one embodiment, the first link includes the first radio bearer.

As one embodiment, the first link includes the first RLC bearer.

For one embodiment, the communication nodes on the first link include the first node U11 and the second node U12 and the third node U13.

For one embodiment, the communication node on the second link does not include the second node U12.

For one embodiment, the second link is an SRB and the first link is a DRB.

As an embodiment, the fifth message requests to activate a peer RLC bearer of the first RLC bearer.

As an embodiment, the fifth message requests activation of the second RLC bearer.

For an embodiment, the third node U13 instructs the first node U11 to put the RLC bearer associated with the second link in an inactive state.

As an embodiment, the fifth message is an RRC message.

As an embodiment, the fifth message is an RRC message of the Uu interface.

As an embodiment, the first message is used to trigger the sending of the fifth message.

As an embodiment, the fifth message is used to trigger the sixth signaling, and the sixth signaling is RRC signaling.

As an embodiment, the sixth signaling indicates acceptance of the request for activating the peer RLC bearer of the first RLC bearer.

As an embodiment, the sixth signaling indicates to reject the request for activating the peer RLC bearer of the first RLC bearer.

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

As an embodiment, the third signaling is PC5 signaling.

As an embodiment, the third signaling indicates acceptance of the request for activating the peer RLC bearer of the first RLC bearer.

As an embodiment, the third signaling indicates to reject the request for activating the peer RLC bearer of the first RLC bearer.

As an embodiment, when the sixth signaling indicates rejection of the request for activating the peer RLC bearer of the first RLC bearer, the third signaling indicates rejection of the request for activating the peer RLC bearer of the first RLC bearer.

As an embodiment, the sixth signaling is used to generate the third signaling.

As an embodiment, the third signaling indicates rejection of the request to activate the peer RLC bearer of the first RLC bearer when any one of a second set of conditions is satisfied, the second set of conditions including a first timer being in a running state.

As a sub-embodiment of this embodiment, when the sixth signaling indicates to accept the request for activating the peer RLC bearer of the first RLC bearer, and when any condition in the second condition set is satisfied, the third signaling indicates to reject the request for activating the peer RLC bearer of the first RLC bearer.

For one embodiment, the second node U12 sends the fifth message when all of the conditions in the second set of conditions are not met.

As an embodiment, the second set of conditions includes that the second node U12 is performing a conditional reconfiguration.

As an embodiment, the second set of conditions includes that the second node U12 is performing a conditional serving cell modification.

As an embodiment, the second set of conditions includes that the second node U12 is performing conditional serving cell deletion.

As an embodiment, the second set of conditions includes that the second node U12 is performing a conditional serving cell increase.

As an embodiment, the second set of conditions includes that the second node U12 is performing a conditional primary serving cell modification.

As an embodiment, the second set of conditions includes that the second node U12 is performing a conditional primary serving cell deletion.

As an embodiment, the second set of conditions includes that the second node U12 is performing a conditional primary serving cell increase.

As an embodiment, the second set of conditions includes that the second RLC bearer has changed.

As an embodiment, the second set of conditions includes that the second RLC bearer has been deleted.

For one embodiment, the fifth message indicates that the first link failed.

For one embodiment, the fifth message indicates that the first link is unavailable.

For one embodiment, the fifth message indicates that the second link failed.

For one embodiment, the fifth message indicates that the first node U11 has a radio link failure.

For one embodiment, the fifth message includes a measurement report of the first node U11.

Example 7

Embodiment 7 illustrates a schematic diagram of a network architecture according to an embodiment of the present invention, as shown in fig. 7.

In embodiment 7, solid lines with arrows indicate that there may be communication links between nodes. The 3 a-th node corresponds to a third node of the application, the 1 a-th node corresponds to a first node of the application, and the 2 a-th node corresponds to a second node of the application.

As an embodiment, the 2a node is a relay node of the 1a node; the 3a node is a serving cell of the 1a node.

As an embodiment, the first RLC bearer is an RLC bearer between the 1a node and the 2a node.

As an embodiment, the 2a node provides an L2 relay service to the 1a node.

As an embodiment, the 2a node provides an L3 relay service to the 1a node.

As an embodiment, the communication interface between the 2a node and the 1a node is a PC5 interface.

As an embodiment, the peer RLC bearer of the first RLC bearer is maintained by the 2a node.

As an embodiment, one end RLC bearer of the first RLC bearer is maintained by the 1a node.

As an embodiment, the first RLC bearer is terminated at the 1a node and the 2a node.

As an embodiment, the sender of the first signaling is the 3a node.

As an embodiment, the recipient of the first message is the 2a node, the first message comprising an identity of the 2a node.

As an embodiment, the recipient of the first message is the 2a node, and the first message is transmitted through a dedicated channel between the 1a node and the 2a node.

As one embodiment, the first radio bearer is associated with the first RLC bearer, the first radio bearer being terminated at the 1a node and the 2a node.

As one embodiment, the first radio bearer is associated with the first RLC bearer, the first radio bearer being terminated at the 1a node and the 3a node.

As an embodiment, the first link is a link between the 1a node and the 3a node.

As a sub-embodiment of this embodiment, the first link includes a beam.

As a sub-embodiment of this embodiment, the first link is determined by a reference signal transmitted by the 3a node.

As a sub-embodiment of this embodiment, the first link comprises a physical layer link.

As a sub-embodiment of this embodiment, the first link includes a MAC layer connection.

As a sub-embodiment of this embodiment, the first link comprises an RRC connection.

As a sub-embodiment of this embodiment, the first link includes the PDCP connection.

As a sub-embodiment of this embodiment, the first link includes the first radio bearer.

As a sub-embodiment of this embodiment, the first link comprises an RLC bearer associated with the first radio bearer between the 1a node and the 3a node.

As an embodiment, after the 2a node receives the first message, an RLC bearer between the 2a node and the 3a node associated with the first radio bearer is activated.

As a sub-embodiment of this embodiment, the reception of the first message is used to trigger the 2a node to activate or request to activate an RLC bearer between the 2a node and the 3a node associated with the first radio bearer.

As a sub-embodiment of this embodiment, the activation or requested activation of the first RLC bearer is used to trigger the 2a node to activate or request activation of an RLC bearer between the 2a node and the 3a node associated with the first radio bearer.

As a sub-embodiment of this embodiment, the activating of the first RLC bearer includes setting the first RLC bearer to an active state.

As a sub-embodiment of this embodiment, the activating of the RLC bearer between the 2a node and the 3a node associated with the first radio bearer comprises setting the RLC bearer between the 2a node and the 3a node associated with the first radio bearer to an active state.

As an embodiment, the first message is used to instruct the 2a node to activate the first RLC bearer.

As an embodiment, the first message is used to instruct the 2a node to activate the portion of the first RLC bearer maintained by the 2a node.

Example 8

Embodiment 8 illustrates a schematic diagram of a network architecture according to an embodiment of the present invention, as shown in fig. 8.

In embodiment 8, solid lines with arrows indicate that there may be communication links between nodes. The 3b node corresponds to a third node of the application, the 1b node corresponds to a first node of the application, and the 2b node is a relay node; node 2c corresponds to the second node of the present application.

As an embodiment, the 2c node is a relay node of the 1b node; the 3b node is a serving cell of the 1b node.

As a sub-embodiment of this embodiment, the 3b node is a primary serving cell of the 1b node.

As an embodiment, the first radio bearer is terminated at the first 1b node and the 3b node.

As one embodiment, the first radio bearer is a radio bearer between the 1b node and the 3b node.

As an embodiment, the sender of the first signaling is the 3b node.

As an embodiment, the sender of the first signaling is the 2c node.

As an embodiment, the 2c node broadcasts discovery information.

As an embodiment, the 2c node broadcasts the fourth signaling.

As an embodiment, the 2c node broadcasts the fourth signaling periodically.

As an embodiment, the 2c node is a group header or a cluster header of the 1b node.

As an embodiment, the 2b node is a group header or a cluster header of the 1b node.

As an embodiment, the first RLC bearer is an RLC bearer between the 2c node and the 1b node.

As an embodiment, the first RLC bearer is terminated at the first 1b node and the 2c node.

As an embodiment, the second RLC bearer is an RLC bearer between the 3b node and the 2c node.

As an embodiment, the second RLC bearer is terminated at the 3b node and the 2c node.

As one embodiment, the second RLC bearer and the first RLC bearer are both associated with the first radio bearer.

As an embodiment, the second RLC bearer is a peer RLC bearer of the first RLC bearer.

For one embodiment, the nodes communicating on the first link include the first 1b node and the 3b node.

As one embodiment, the nodes communicating on the first link include the first 1b node and the 3b and the 2b nodes.

As one embodiment, the first link includes a link between the first 1b node and the 3b node and a link between the 2b node and the 3b node.

For one embodiment, the first link failure comprises a failure between the 1b node and the 2b node.

As a sub-embodiment of this embodiment; the first link failure comprises a radio link failure.

As a sub-embodiment of this embodiment; the first link failure comprises a beam failure.

As a sub-embodiment of this embodiment; the first link failure comprises a link failure between the 1b node and the 2b node.

As an embodiment, the first set of conditions includes that the link quality of the first link is below a given threshold, and the serving cell of the 1b node indicates the given threshold.

For one embodiment, the first link failure comprises a failure between the 3b node and the 2b node.

For one embodiment, the first link comprises a wireless link from the 3b node directly to the 1b node.

As a sub-embodiment of this embodiment, the failure of the wireless link from the 3b node directly to the 1b node includes the 1b node being out of coverage.

For one embodiment, the second link includes a link directly connected between the 1b node and the 3b node.

As an embodiment, the second link includes a link between the 1b node and the 3b node via the 2b node relay.

As one embodiment, the second link includes a link for transmitting RRC signaling.

As one embodiment, the second link includes an RRC connection between the 1b node and the 3b node.

For one embodiment, the second link includes an SRB between the 1b node and the 3b node.

As an embodiment, the first message is used to trigger the 2c node to send the fifth message.

Examples9

Embodiment 9 illustrates a schematic diagram of a network architecture according to an embodiment of the present invention, as shown in fig. 9.

In embodiment 9, solid lines with arrows indicate that there may be communication links between nodes. The 3c node corresponds to a third node of the application, and the 1c node corresponds to a first node of the application; node 2d corresponds to the second node of the present application.

As an embodiment, the 1c node is a relay node of the 2d node.

As an embodiment, the 3c node is a serving cell of the 2d node.

As a sub-embodiment of this embodiment, the 3c node is a primary serving cell of the 2d node.

As an embodiment, the 3c node is a serving cell of the 1c node.

As a sub-embodiment of this embodiment, the 3rd node is a primary serving cell of the 1 st node.

As an embodiment, the first radio bearer is terminated at the 2d node and the 3c node.

As an embodiment, the first radio bearer is a radio bearer between the 2d node and the 3c node.

As an embodiment, the sender of the first signaling is the 3c node.

As an embodiment, the peer bearer of the first RLC bearer is maintained by the 3c node.

As an embodiment, the peer bearer of the first RLC bearer is a part of the first RLC bearer maintained by the 3c node at the 3c node.

As an embodiment, the first link is a wireless link between the 2 d-th node and the 3 c-th node.

As an embodiment, the first link is a bearer between the 2d node and the 3c node.

As an embodiment, the first link is an RLC bearer between the 2d node and the 3c node.

As an embodiment, the first link is a physical layer link between the 2 d-th node and the 3 c-th node.

As an embodiment, the first link is an RRC connection between the 2d node and the 3c node.

As an embodiment, when the first radio link fails, the 2d node sends a first request.

As a sub-embodiment of this embodiment, the recipient of the first request is the 1 c-th node.

As a sub-embodiment of this embodiment, the first request comprises an identity of the 1 c-th node.

As a sub-embodiment of this embodiment, the first request is sent over a unicast link between the 2 d-th node and the 1 c-th node.

As a sub-embodiment of this embodiment, the first request is sent over a dedicated link between the 2 d-th node and the 1 c-th node.

As a sub-embodiment of this embodiment, the header carrying the first request MAC PDU indicates the identity of the 1c node.

As a sub-embodiment of this embodiment, a first MAC PDU carries the first request; the header of the first MAC PDU and the SCI scheduling the first MAC PDU together indicate the identity of the 1c node.

For one embodiment, the first request is used to request activation of the first RLC bearer.

As an embodiment, the third signaling is used for feeding back the first request.

For one embodiment, the first request comprises a PC5 message.

For one embodiment, the first request includes PC5 data.

For one embodiment, the first request includes PC5-RRC signaling.

For one embodiment, the first request includes PC5-S signaling.

As an embodiment, the first request comprises rrcreconconfigurationsildelink.

For one embodiment, the first request is used to indicate that the first link failed.

Example 10

Embodiment 10 illustrates a schematic diagram of a protocol stack according to an embodiment of the present invention, as shown in fig. 10. Embodiment 10 is based on embodiment 3 and shows a control plane protocol stack relating to a relay node.

In embodiment 10, the NAS is a non-access stratum, the Uu-RRC is an RRC protocol of the Uu interface, and the Uu-PDCP is a PDCP entity of the Uu interface; Uu-RLC is the RLC entity of the Uu interface, Uu-MAC is the MAC entity of the Uu interface, and Uu-PHY is the physical layer entity of the Uu interface; PC5-RLC is the RLC entity of the PC5 interface; PC5-MAC is the MAC entity of PC5 interface; PC5-PHY is the physical layer entity of PC5 interface; the Adaptation is an Adaptation entity between the relay node and the network; the N2Stack is a protocol Stack of an N2 interface, and the N2 interface is an interface between the gNB and the core network.

As an embodiment, the UE corresponds to the first node of the present application, the relay corresponds to the second node of the present application, and the gNB corresponds to the third node of the present application.

As a sub-embodiment of this embodiment, the first radio bearer is a radio bearer between the UE and the gNB.

As a sub-embodiment of this embodiment, the first RLC bearer is an RLC bearer of the PC5 interface, and the first RLC bearer is an RLC bearer between the UE and the relay.

As a sub-embodiment of this embodiment, the first RLC bearer is associated with the PC5-RLC entity of the UE and the relayed PC5-RLC entity.

As a sub-embodiment of this embodiment, the first RLC is carried at one end of the UE, and includes a PC5-RLC entity of the UE.

As a sub-embodiment of this embodiment, one end of the first RLC bearer at the relay is a peer RLC bearer of the first RLC bearer, and the one end of the first RLC bearer at the relay includes the PC5-RLC entity of the relay.

As a sub-embodiment of this embodiment, the second RLC bearer is an RLC bearer between the relay and the gNB.

As a sub-embodiment of this embodiment, the second RLC bearer is associated with the Uu-RLC entity of the relay and the Uu-RLC entity of the gNB.

As a sub-embodiment of this embodiment, the second RLC bearer is associated with the first radio bearer.

As a sub-embodiment of this embodiment, the second RLC bearer is a peer RLC bearer of the first RLC bearer.

As an embodiment, the UE corresponds to the second node of the present application, the relay corresponds to the first node of the present application, and the gNB corresponds to the third node of the present application.

As a sub-embodiment of this embodiment, the first RLC bearer is an RLC bearer between the relay and the gNB.

As a sub-embodiment of this embodiment, the first RLC bearer includes the Uu-RLC entity of the relay and the Uu-RLC entity of the gNB.

As a sub-embodiment of this embodiment, one end of the first RLC bearer is maintained by the relay; the other end of the first RLC bearer is maintained by the gNB.

As a sub-embodiment of this embodiment, the peer RLC bearer of the first RLC bearer is maintained by the gNB.

As a sub-embodiment of this embodiment, the peer RLC bearer of the first RLC bearer includes a Uu-RLC entity of the gNB.

Example 11

Embodiment 11 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. 11. In fig. 11, a processing apparatus 1100 in a first node comprises a first receiver 1101 and a first transmitter 1102 and a first processor 1103.

In the case of the embodiment 11, however,

a first receiver 1101, configured to receive a first signaling, where the first signaling is used to configure a first RLC bearer in an inactive state;

a first transmitter 1102 that transmits a first message; the first message is used for requesting to activate a peer RLC bearer of a first RLC bearer;

a first processor 1103 that switches the first RLC bearer to an active state when each condition in a first set of conditions is satisfied;

As an embodiment, the first processor 1103 establishes the first RLC bearer in response to receiving the first signaling, and sets the first RLC bearer in an inactive state.

As an embodiment, the first transmitter 1102, when a first set of conditions is met, transmits a first status report;

For one embodiment, the first set of conditions includes the first node entering an RRC idle state.

For one embodiment, the first receiver 1101 receives a second message, a sender of the second message being a second node; a peer RLC bearer of the first RLC bearer is maintained by the second node, the second message indicating at least the latter of an RRC state of the second node and a serving cell in which the second node resides.

For an embodiment, the first receiver 1101 receives a second signaling indicating an L3 relay configuration of the first link;

the first transmitter 1102, which configures the first link by applying the second signaling when the first link and the second link fail at the same time; when the first link fails and the second link fails, the first transmitter applies the first signaling to configure the first link;

For one embodiment, the first receiver 1101 receives a third signaling;

As an embodiment, the first receiver 1101 receives a fourth signaling, where the fourth signaling indicates a first cell, and the first cell is a primary serving cell of the second node; the fourth signaling indicates a first reception quality, which is a link quality between the second node to the first cell.

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

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

As an embodiment, the first node is a terminal 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 an internet of things terminal.

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

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

For one embodiment, the first receiver 1101 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 1102 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 12

Embodiment 12 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. 12. In fig. 12, the processing means 1200 in the second node comprises a second transmitter 1201 and a second receiver 1202 and a second processor 1203.

In the case of the embodiment 12, however,

a second receiver 1202, receiving a first message, where the first message is used for requesting to activate a peer RLC bearer of a first RLC bearer;

the second processor 1203 sets the peer RLC bearer of the first RLC bearer to an active state;

As an embodiment, the second receiver 1202 receives a fifth signaling, and in response to receiving the fifth signaling, the second processor 1203 establishes a peer RLC bearer of the first RLC bearer and sets the peer RLC bearer of the first RLC bearer to be in an inactive state.

As an embodiment, the second transmitter 1201 sends a fifth message, where the fifth message requests to activate a peer RLC bearer of the first RLC bearer.

For one embodiment, the first set of conditions includes a sender of the first message entering an RRC idle state.

For an embodiment, the second transmitter 1201 sends a second message, the peer RLC bearer of the first RLC bearer being maintained by the second node, the second message indicating at least the latter of the RRC state of the second node and the serving cell in which the second node resides.

For an embodiment, the second transmitter 1201 transmits a third signaling;

As an embodiment, the second transmitter 1201 transmits a fourth message indicating a first reception quality, which is a link quality of the second node to a primary serving cell of the second node.

For an embodiment, the second receiver 1202 receives a sixth signaling;

wherein the sixth signaling is RRC signaling; the sixth signaling indicates that the request for activating the opposite-end RLC bearing of the first RLC bearing is accepted, or the sixth signaling indicates that the request for activating the opposite-end RLC bearing of the first RLC bearing is rejected.

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 UE (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 first receiver 1202 may comprise 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 1201 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 13

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

a third transmitter 1301, which transmits the first signaling; the first signaling is used for configuring a first RLC bearer to be in an inactive state;

For an embodiment, the third receiver 1302 receives a first status report;

For one embodiment, the first set of conditions includes a receiver of the first signaling entering an RRC idle state.

As an embodiment, the third transmitter 1301, sends a second signaling, where the second signaling indicates an L3 relay configuration of the first link;

when the first link and the second link fail simultaneously, a receiver of the first signaling applies the second signaling to configure the first link; when the first link fails and the second link fails, a receiver of the first signaling applies the first signaling to configure the first link;

For an embodiment, the third receiver 1302 receives a fourth message indicating a first reception quality, where the first reception quality is a link quality of a second node to a primary serving cell of the second node.

As an embodiment, the third transmitter 1301, sends a fourth signaling, where the fourth signaling indicates a first cell, and the first cell is a primary serving cell of a second node; the fourth signaling indicates a first reception quality, which is a link quality between the second node to the first cell.

As an embodiment, the third receiver 1302 receives a fifth message, where the fifth message requests to activate a peer RLC bearer of the first RLC bearer.

As an embodiment, the third transmitter 1301, sends a sixth signaling;

wherein the fifth message is used to trigger the sixth signaling, which is RRC signaling; the sixth signaling indicates to accept the request for activating the opposite-end RLC bearer of the first RLC bearer, or the sixth signaling indicates to reject the request for activating the opposite-end RLC bearer of the first RLC bearer.

As an embodiment, the third receiver 1302 receives a fifth signaling, and as a response to receiving the fifth signaling, establishes a peer RLC bearer of the first RLC bearer, and sets the peer RLC bearer of the first RLC bearer to an inactive state.

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

As one embodiment, the third node is a satellite.

As one embodiment, the third node is a relay.

As an embodiment, the third node is a UE (user equipment).

As an embodiment, the third node is a gateway.

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

For one embodiment, the third transmitter 1301 includes at least one of the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, and the memory 476 of embodiment 4.

For one embodiment, the third receiver 1302 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 cellular base station, a micro cellular base station, a home base station, a relay base station, a gbb (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, an eNB (LTE node B), a test device, for example, a transceiver simulating a partial function of a base station, a signaling tester, and the like.

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:

and the first processor, as a response to receiving the first signaling, establishes the first RLC bearer and sets the first RLC bearer in an inactive state.

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

the first transmitter, when a first set of conditions is met, transmits a first status report;

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

the first set of conditions includes the first node entering an RRC idle state.

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

the first receiver receives a second message, and a sender of the second message is a second node; a peer RLC bearer of the first RLC bearer is maintained by the second node, the second message indicating at least the latter of an RRC state of the second node and a serving cell in which the second node resides.

6. The first node according to any of claims 1 to 5,

the first receiver receives second signaling, wherein the second signaling indicates an L3 relay configuration of the first link;

the first transmitter, when the first link and the second link fail at the same time, the first transmitter applies the second signaling to configure the first link; when the first link fails and the second link fails, the first transmitter applies the first signaling to configure the first link;

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

the first receiver receives a third signaling;

wherein the first message is used to trigger the third signaling, which is PC5 signaling; the third signaling instruction accepts the request for activating the opposite-end RLC bearing of the first RLC bearing, or the third signaling instruction rejects the request for activating the opposite-end RLC bearing of the first RLC bearing; the third signaling indicates rejection of the request for activating the peer RLC bearer of the first RLC bearer when any one of a second set of conditions is satisfied, the second set of conditions including a first timer of a sender of the third signaling being in a running state.

8. The first node according to any of claims 1 to 7,

the first receiver receives a fourth signaling, where the fourth signaling indicates a first cell, and the first cell is a primary serving cell of the second node; the fourth signaling indicates a first reception quality, which is a link quality between the second node to the first cell.

9. A second node for wireless communication, comprising:

10. A third node to be used for wireless communication, comprising:

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

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

13. A method in a third node used for wireless communication, comprising: