CN114629608A

CN114629608A - Method and arrangement in a communication node used for wireless communication

Info

Publication number: CN114629608A
Application number: CN202011452844.1A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2022-06-14

Abstract

The invention discloses a method and an arrangement in a communication node used for wireless communication. A first node sends first state information through a second radio bearer, wherein the first state information indicates a lost first SDU set, the first SDU set comprises SDUs of at least one first-class entity, and the SDU of any first-class entity in the first SDU set is transmitted through the first radio bearer; wherein the second radio bearer is different from the first radio bearer, and the first radio bearer and the second radio bearer respectively include the first class entity. The method and the device can provide the feedback path of the state information for the multicast service by utilizing the existing unicast path, can support the lossless transmission of the multicast service, and can effectively reduce the signaling overhead.

Description

Method and arrangement in a communication node used for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a multi-connection transmission method and apparatus.

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.

Broadcast (Broadcast)/Multicast (Multicast) transmission techniques are widely used in cellular systems, such as MBMS (Multimedia Broadcast Multicast Service) in 4G LTE (Long Term Evolution) system. The broadcast/multicast transmission is mainly characterized in that the network equipment can simultaneously transmit the same broadcast/multicast data to a plurality of terminal nodes, and the broadcast/multicast transmission has important value in scenes such as broadcast television, disaster early warning, emergency service, industrial control, vehicle networking and the like. In LTE MBMS, an eNB schedules a plurality of terminal nodes to receive a PDSCH (Physical Downlink Shared Channel) or a PMCH (Physical Multicast Channel) containing broadcast/Multicast data through one PDCCH (Physical Downlink Control Channel). The broadcast/multicast-related identifiers include an SC-RNTI (Single Cell RNTI ), an SC-N-RNTI (Single Cell Notification RNTI ) and a G-RNTI (Group RNTI, Group RNTI).

Disclosure of Invention

In the PTM transmission mode, the radio bearer for multicast transmission usually only supports downlink transmission, but cannot support uplink transmission, so that the feedback of the service data transmission state cannot be performed through the same radio bearer, and thus, the lossless transmission of the service data on the air interface cannot be realized.

In view of the above, the present application provides a solution. In the description of the above problem, a Terrestrial Network (TN) scenario is taken as an example; the method and the device are also applicable to scenes such as Non-Terrestrial Network (NTN) and V2X, and achieve technical effects similar to those in TN (twisted nematic) scenes. In addition, the adoption of a unified solution for different scenarios also helps to reduce hardware complexity and cost.

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

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

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

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

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, characterized by comprising:

sending first state information through a second radio bearer, wherein the first state information indicates a first missing SDU set, the first SDU set comprises at least one SDU of a first type entity, and an SDU of any first type entity in the first SDU set is transmitted through the first radio bearer;

wherein the second radio bearer is different from the first radio bearer, and the first radio bearer and the second radio bearer respectively include the first class entity.

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

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

As an embodiment, the SDU of any of the first type entities sent over the first radio bearer is identified by a non-unicast identity.

As an embodiment, the SDU of any of the first type entities sent over the second radio bearer is unicast identified.

As an embodiment, the first set of SDUs includes a plurality of SDUs of the first type entity, and the SDU of the one first type entity is one of the SDUs of the plurality of first type entities.

As an embodiment, the first set of SDUs comprises any missing SDU in a reordering window of the first type entity.

As an example, the phrase missing in this application includes: is not successfully received.

As an example, the phrase missing in this application includes: is not received.

As an embodiment, the first set of SDUs is a subset of SDUs of the first type entity comprised by a reordering window of the first type entity.

As an embodiment, an SDU of any first type entity in the first set of SDUs is missing.

As an embodiment, the phrase that the first state information indicates that the first set of SDUs was missed includes: the first state information comprises a second field indicating a number of an SDU of a first missing entity of the first set of SDUs.

As an embodiment, the phrase that the first state information indicates that the first set of SDUs was missed includes: the first status information comprises a third field indicating which SDUs of the first type of entity are missing and which SDUs of the first type of entity are correctly received.

According to one aspect of the application, the method is characterized by comprising the following steps:

the first status information includes a first field, the first field in the first status information indicating the first radio bearer.

As a sub-embodiment of the above, the phrase that the first domain indicates that the first radio bearer comprises: the first domain indicates that the first status information is generated by the first radio bearer.

As a sub-embodiment of the above, the phrase that the first domain indicates that the first radio bearer comprises: the presence or absence of the first domain is used to determine whether the first status information is generated by the first radio bearer.

As a sub-embodiment of the above, the phrase that the first field in the first status information indicates that the first radio bearer comprises: the first field in the first status information indicates an identity of the first radio bearer.

According to yet another aspect of the present application, the act of sending the first status information over the second radio bearer comprises:

and sending a first signaling through the second radio bearer, wherein the first signaling indicates the first state information, the first signaling is a first target layer signaling, and the first target layer is different from a layer to which the first type entity belongs.

As one embodiment, the first target layer includes an RRC layer.

For one embodiment, the first target layer comprises a NAS.

As an embodiment, the first target layer includes an RRC layer, and the layer to which the first type entity belongs includes a PDCP layer.

As an embodiment, the first signaling includes all or part of a rrcreeconfigurationcomplete message.

According to yet another aspect of the present application, it is characterized by comprising:

receiving a second signaling;

wherein the second signaling comprises reporting configuration information for the first signaling.

As an embodiment, the second signaling includes all or part of the rrcreeconfiguration message.

As an embodiment, the phrase reporting configuration information for the first signaling includes: an identity of the second radio bearer.

As an embodiment, the identity of the second radio bearer is a non-negative integer in this application.

As a sub-embodiment of the above embodiment, the identity of the second radio bearer is not greater than 64.

As a sub-embodiment of the above embodiment, the identity of the second radio bearer is not greater than 10000.

As an embodiment, in this application, the identity of the second radio bearer comprises an identity of an LCH in the second radio bearer.

As an embodiment, in this application, the Identity of the second radio bearer includes an LCID (Logical Channel Identity) associated with the second radio bearer.

As an embodiment, in this application, the identity of the second radio bearer includes an identity of an RLC bearer in the second radio bearer.

As an embodiment, in this application, the identity of the second radio bearer includes an identity of an RLC bearer associated with the second radio bearer.

As an embodiment, the phrase reporting configuration information for the first signaling includes: first enabling information indicating that reporting of first state information via first target layer signaling is allowed.

As an embodiment, the phrase reporting configuration information for the first signaling includes: first enabling information indicating that reporting of first state information through first signaling is allowed.

transmitting a first control PDU through the second radio bearer, the first control PDU indicating the first status information, the first control PDU being a control PDU of a layer to which the first type of entity belongs.

For one embodiment, the first control PDU comprises a PDCP control PDU.

For one embodiment, the first control PDU comprises an RLC control PDU.

receiving a third signaling;

wherein the third signaling comprises reporting configuration information for the first control PDU.

As an embodiment, the third signaling comprises rrcreeconfiguration.

As an embodiment, the third signaling comprises RRCReconfigurationSidelink.

As an embodiment, the reporting configuration information of the phrase for the first control PDU includes: an identity of the second radio bearer.

As an embodiment, the reporting configuration information of the phrase for the first control PDU includes: second enabling information indicating that reporting of the first status information via the first control PDU is allowed.

The application discloses a method used for a second type node of wireless communication, which is characterized by comprising the following steps:

receiving first state information;

wherein the first status information is sent through a second radio bearer, the first status information indicates a missing first SDU set, the first SDU set includes at least one SDU of a first type entity, and an SDU of any first type entity in the first SDU set is transmitted through a first radio bearer; the second radio bearer is different from the first radio bearer, and the first radio bearer and the second radio bearer respectively include the first class entity.

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

a first transmitter, configured to transmit first status information through a second radio bearer, where the first status information indicates a missing first SDU set, where the first SDU set includes at least one SDU of a first type entity, and an SDU of any first type entity in the first SDU set is transmitted through the first radio bearer;

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

a second receiver receiving the first state information;

As an embodiment, the method may utilize an existing unicast path to provide a feedback path of state information for the multicast service.

As an example, the benefits of the above method include: and the lossless transmission of the multicast service can be supported.

As an example, the benefits of the above method include: and a unicast path is not required to be newly added, so that the signaling overhead can be reduced.

Drawings

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

FIG. 1 illustrates a flow diagram of transmission of first state information according to one embodiment of the present application;

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

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

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

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

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

figure 7 shows a schematic diagram of transmitting the first signaling over the second radio bearer according to an embodiment of the present application;

FIG. 8 shows a schematic diagram of transmitting the first control PDU over the second radio bearer according to one embodiment of the present application;

FIG. 9 shows a block diagram of a processing device for use in a first node according to an embodiment of the present application;

fig. 10 shows a block diagram of a processing arrangement for a second 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 transmission of first state information 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 this application sends, in step 101, first status information over a second radio bearer, where the first status information indicates a missing first set of SDUs, where the first set of SDUs includes at least one SDU of a first-class entity, and an SDU of any first-class entity in the first set of SDUs is transmitted over the first radio bearer;

As one embodiment, the first Radio Bearer includes an MRB (Multicast Radio Bearer).

For one embodiment, the first Radio Bearer comprises a Single Cell-Multicast Radio Bearer (SC-MRB).

As an embodiment, the first Radio Bearer includes an MBS-RB (Multicast Broadcast Service-Radio Bearer).

As one embodiment, the first Radio Bearer includes a DRB (Data Radio Bearer).

As one embodiment, the first radio bearer includes an RLC Channel (Channel).

For one embodiment, the first radio Bearer comprises an RLC Bearer (Bearer).

As one embodiment, the first radio bearer includes a LCH (Logical Channel).

As an embodiment, the first wireless bearer includes a bearer transmitted in a PTM (Point-to-MultiPoint) manner.

As an embodiment, the first radio bearer includes a bearer transmitted in a PTP (Point-to-Point) manner.

As an embodiment, the first radio bearer comprises a PTP branch.

As an embodiment, the PTP branch includes leg.

As an embodiment, the PTP branch includes a link.

As one embodiment, the PTP branch comprises a branch.

As an embodiment, the first radio bearer comprises a PTM branch.

As an embodiment, the PTM branch comprises leg.

As an embodiment, the PTM branch comprises a link.

As an embodiment, the PTM branch comprises a branch.

For one embodiment, the second radio bearer comprises an MRB.

For one embodiment, the second radio bearer comprises a SC-MRB.

As an embodiment, the second radio bearer comprises an MBS-RB.

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

For one embodiment, the second radio bearer includes an RLC channel.

As one embodiment, the second radio bearer comprises an RLC bearer.

In one embodiment, the second radio bearer includes an LCH.

As an embodiment, the second radio bearer includes a bearer transmitted in a PTM (Point-to-MultiPoint) manner.

As an embodiment, the second radio bearer includes a bearer transmitted in a PTP (Point-to-Point) manner.

As an embodiment, the second radio bearer comprises a PTP branch.

As an embodiment, the PTP branch includes a leg.

As an embodiment, the PTP branch includes a link.

As one embodiment, the PTP branch comprises a branch.

As an embodiment, the second radio bearer comprises a PTM branch.

As an embodiment, the PTM branch comprises leg.

As an embodiment, the PTM branch comprises a link.

As an embodiment, the PTM branch comprises a branch.

As an embodiment, traffic sent over the first radio bearer is identified by a non-unicast identity.

As an embodiment, the traffic sent over the second radio bearer is unicast identified by an identity.

As a sub-embodiment of the foregoing embodiment, the identifying that the SDU of any of the first-class entities sent by the phrase over the first radio bearer is non-unicast includes: the non-unicast identity is used to determine time-frequency resources occupied by SDU transmissions of any of the first type entities sent over the first radio bearer.

As a sub-embodiment of the foregoing embodiment, the identifying that the SDU of any of the first-class entities sent by the phrase over the first radio bearer is non-unicast includes: the non-unicast identity is used to generate a RS sequence of a DMRS for SDUs of any of the first type entities transmitted over the first radio bearer.

As a sub-embodiment of the foregoing embodiment, the identifying that the SDU of any of the first-class entities sent by the phrase over the first radio bearer is non-unicast includes: the non-unicast identity is used for CRC scrambling of SDUs of any first type entity transmitted over the first radio bearer.

As a sub-embodiment of the foregoing embodiment, the phrase that the SDU of any of the first type entities sent over the second radio bearer is identified by unicast identity includes: the unicast identity is used to determine time-frequency resources occupied by SDU transmissions of any of the first type entities sent over the first radio bearer.

As a sub-embodiment of the foregoing embodiment, the phrase that the SDU of any of the first type entities sent over the second radio bearer is identified by unicast identity includes: the unicast identity is used to generate a RS sequence of a DMRS for SDUs of any first type entity transmitted over the first radio bearer.

As a sub-embodiment of the foregoing embodiment, the phrase that the SDU of any of the first type entities sent over the second radio bearer is identified by unicast identity includes: the unicast identity is used for CRC scrambling of SDUs of any first type entity transmitted over the first radio bearer.

As an embodiment, traffic sent over the second radio bearer is identified by a non-unicast identity.

As an embodiment, the SDU of any of the first type entities sent over the second radio bearer is identified by a non-unicast identity.

As an embodiment, traffic sent over the first radio bearer is unicast identified by a unicast identity.

As an embodiment, the SDU of any of the first type entities sent over the first radio bearer is unicast identified.

As an embodiment, the service sent through the first radio bearer in this application includes mbs (multicast Broadcast service) service.

As an embodiment, the service sent through the first radio bearer in this application includes Broadcast service.

As an embodiment, the service sent by the first radio bearer in this application includes a Multicast service.

As an embodiment, the service sent through the first radio bearer in this application includes a Groupcast (multicast) service.

As an embodiment, the service sent through the first radio bearer in this application includes an mbms (multimedia Broadcast Multicast service) service.

As an embodiment, the service sent through the first radio bearer in this application includes an embms (enhanced Multimedia Broadcast Multimedia service) service.

As an embodiment, the traffic sent over the first radio bearer in this application includes multicast or broadcast traffic for V2X.

As an embodiment, the service transmitted through the first radio bearer in this application includes an NR-based multicast or broadcast service.

As an embodiment, the traffic sent through the second radio bearer in this application includes Unicast (Unicast) traffic.

As an embodiment, the traffic sent over the second radio bearer in this application includes unicast traffic for V2X.

As an embodiment, the traffic transmitted over the second radio bearer in this application includes NR-based unicast traffic.

As an embodiment, the service sent through the second radio bearer in the present application includes mbs (multicast Broadcast service) service.

As an embodiment, the service sent through the second radio bearer in this application includes Broadcast service.

As an embodiment, the service sent through the second radio bearer in this application includes a Multicast service.

As an embodiment, the service sent through the second radio bearer in this application includes a Groupcast (multicast) service.

As an embodiment, the service sent through the second radio bearer in this application includes an mbms (multimedia Broadcast Multicast service) service.

As an embodiment, the service sent through the second radio bearer in this application includes an embms (enhanced Multimedia Broadcast Multimedia service) service.

As an example, the traffic sent over the second radio bearer in this application includes multicast or broadcast traffic for V2X.

As an embodiment, the service transmitted through the second radio bearer in this application includes an NR-based multicast or broadcast service.

As an example, the non-unicast identity in this application includes G-RNTI (Group RNTI).

As an embodiment, in the present application, the non-unicast identity includes MBS-RNTI (Multicast Broadcast Service RNTI).

As an example, the non-unicast identity described in this application comprises 16 bits.

As an example, the non-unicast identity in this application comprises 24 bits.

As an example, the non-unicast identity in this application comprises a number of bits that is a positive integer multiple of 8.

As an example, the unicast identity in this application includes C-RNTI (Cell RNTI ).

As an example, the unicast identity in this application comprises 16 bits.

As an example, the unicast identity in this application comprises 24 bits.

As an example, the unicast identity in this application comprises a number of bits that is a positive integer multiple of 8.

As an example, non-unicast in this application includes multicast and broadcast.

As one embodiment, the second radio bearer is established before the first radio bearer.

As one embodiment, the second radio bearer is configured before the first radio bearer.

As one embodiment, the second radio bearer is activated before the first radio bearer.

As one embodiment, the second radio bearer is activated when the first radio bearer is configured.

As an embodiment, the first type of entity comprises a PDCP entity.

For one embodiment, the first type of entity comprises an RLC entity.

As an embodiment, the SDUs of the first type entity include PDCP SDUs.

As an embodiment, the SDUs of the first type entity include RLC SDUs.

As an embodiment, the first type entity in the first radio bearer is configured as UM (Un-acknowledgement Mode).

As an embodiment, the first type entity in the first radio bearer is configured as AM (Acknowledgement Mode).

As an embodiment, the first type entity in the second radio bearer is configured as UM.

As an embodiment, the first type entity in the second radio bearer is configured as AM.

As an embodiment, the first set of SDUs includes SDUs of M first-class entities, and the SDU of one first-class entity is one of SDUs of the plurality of first-class entities.

As a sub-embodiment of the above embodiment, the M is a positive integer.

As a sub-embodiment of the above embodiment, said M is a positive integer greater than 1.

As an embodiment, the phrase that the transmission of SDUs of any one of the first type entities in the first set of SDUs over the first radio bearer includes: an SDU of any first-class entity in the first set of SDUs is received over a first radio bearer.

As an embodiment, the phrase transmission of SDUs of any first type entity in the first set of SDUs over a first radio bearer includes: an SDU of any first-class entity in the first set of SDUs is transmitted over a first radio bearer.

As an embodiment, the first set of SDUs comprises any SDU that was not successfully received in a reordering window of the first type of entity.

As an embodiment, the first set of SDUs comprises any SDU not received in a reordering window of the first type entity.

As an embodiment, the first set of SDUs comprises SDUs of at least one entity of the first type in a reordering window of the entity of the first type.

As an embodiment, the first set of SDUs comprises SDUs of any one of the first type entities in a reordering window of the first type entity.

As an embodiment, the first set of SDUs comprises SDUs of all entities of the first type in a reordering window of the entities of the first type.

As an embodiment, an SDU of any first type entity in the first set of SDUs belongs to a reordering window of the first type entity.

As an embodiment, SDUs of at least one first type entity in the first set of SDUs belong to a reordering window of the first type entity.

As an embodiment, the first set of SDUs is a subset of a third set of SDUs comprising SDUs of all entities of the first type in a reordering window of the entity of the first type.

As an embodiment, the number of any first type entity in the first set of SDUs is greater than a first reference variable.

As an embodiment, the number of any first type entity in the first set of SDUs is greater than or equal to a first reference variable.

As an example, the first reference variable in this application comprises RX _ DELIV.

As an embodiment, the number of any first type entity in the first set of SDUs in this application includes COUNT.

As an embodiment, the Number of any first type entity in the first set of SDUs in this application includes a SN (Sequence Number).

As an embodiment, the Number of any first type entity in the first set of SDUs in this application includes at least one of HFN (Hyper-Frame Number), or SN.

As an embodiment, SDUs of any first type entity in the first set of SDUs are not received.

As an embodiment, SDUs of any first type entity in the first set of SDUs are not successfully received.

As an embodiment, SDUs of at least one first type entity in the first set of SDUs are received.

As an embodiment, at least one SDU of the first set of SDUs has not been received from the first entity.

As an embodiment, at least one SDU of the first set of SDUs has been transmitted over the first radio bearer.

As an embodiment, the phrase that the first state information indicates that the first set of SDUs is missing includes: the first state information comprises a second field indicating a number of an SDU of a first missing entity of the first set of SDUs.

As a sub-embodiment of the above embodiment, the second domain comprises FMC (First Missing COUNT).

As an embodiment, the phrase that the first state information indicates that the first set of SDUs is missing includes: the first status information comprises a third field indicating which SDUs of the first type of entity are missing and which SDUs of the first type of entity are correctly received.

As a sub-embodiment of the above embodiment, the third field comprises a bitmap.

As an auxiliary embodiment of the foregoing sub-embodiment, setting any bit in the bitmap to 0 indicates that the SDU of the first-class entity corresponding to the bit is lost; setting any bit in the bitmap to be 1 indicates that the SDU of the first class entity corresponding to the bit is successfully received.

As an auxiliary embodiment of the foregoing sub-embodiment, setting any bit in the bitmap to 1 indicates that the SDU loss of the first-class entity corresponding to the bit is lost; setting any bit in the bitmap to be 0 indicates that the SDU of the first-class entity corresponding to the bit is successfully received.

As an embodiment, the phrase that the second radio bearer is different from the first radio bearer comprises: the first radio bearer comprises a first type of entity different from a first type of entity comprised by the first radio bearer.

As an embodiment, the first radio bearer and the second radio bearer respectively comprise entities of a second type.

As a sub-embodiment of the above embodiment, the second type of entity comprises an RLC entity.

As a sub-embodiment of the above embodiment, the second type of entity comprised by the first radio bearer is configured in UM mode.

As a sub-embodiment of the above embodiment, the second type entity included in the first radio bearer is configured in an AM mode.

As a sub-embodiment of the above embodiment, the second type of entity comprised by the second radio bearer is configured in UM mode.

As a sub-embodiment of the above embodiment, the second type entity included in the second radio bearer is configured in an AM mode.

As a sub-embodiment of the above embodiment, the phrase that the second radio bearer is different from the first radio bearer comprises: the first radio bearer includes entities of a second type different from entities of the second type included in the first radio bearer.

As one embodiment, the first status information includes a first field, the first field in the first status information indicating the first radio bearer.

As a sub-embodiment of the above, the phrase that the first field in the first status information indicates that the first radio bearer comprises: the first field in the first status information comprises all or part of an identity of the first radio bearer.

As an embodiment, the identity of the first radio bearer is a non-negative integer in this application.

As a sub-embodiment of the above embodiment, the identity of the first radio bearer is not greater than 32.

As a sub-embodiment of the above embodiment, the identity of the first radio bearer is not greater than 10000.

As an embodiment, in this application, the identity of the first radio bearer includes an identity of an LCH in the first radio bearer.

As an embodiment, in this application, the identity of the second radio bearer includes an identity of an LCH associated with the second radio bearer.

As an embodiment, in this application, the identity of the first radio bearer includes an LCID (Logical Channel IDentifier) associated with the first radio bearer.

As an embodiment, in this application, the identity of the first radio bearer includes an identity of an RLC bearer in the first radio bearer.

As an embodiment, in this application, the identity of the first radio bearer includes an identity of an RLC bearer associated with the first radio bearer.

As an embodiment, the act of sending the first status information over the second radio bearer comprises: and sending a first signaling through the second radio bearer, wherein the first signaling indicates the first state information, the first signaling is a first target layer signaling, and the first target layer is different from a layer to which the first type entity belongs.

As a sub-embodiment of the above embodiment, the first target layer includes an RRC layer.

As a sub-embodiment of the above-mentioned embodiment, the first target layer includes a NAS (Non-Access stratum).

As a sub-embodiment of the above embodiment, the first target layer signaling refers to RRC signaling.

As a sub-embodiment of the above embodiment, the first target layer signaling refers to NAS signaling.

As a sub-embodiment of the foregoing embodiment, the first target layer includes an RRC layer, and the layer to which the first type entity belongs includes a PDCP layer.

As a sub-embodiment of the foregoing embodiment, the first target layer includes an RRC layer, and the layer to which the first type entity belongs includes an RLC layer.

As an embodiment, the act of sending the first status information over the second radio bearer comprises: transmitting a first control PDU through the second radio bearer, the first control PDU indicating the first status information, the first control PDU being a control PDU of a layer to which the first type of entity belongs.

As a sub-embodiment of the above embodiment, the layer to which the first type entity belongs includes a PDCP layer.

As a sub-embodiment of the above embodiment, the layer to which the first type entity belongs includes an RLC layer.

As a sub-embodiment of the above embodiment, the first control PDU comprises a PDCP control PDU.

As a sub-embodiment of the above embodiment, the first control PDU comprises an RLC control PDU.

As a sub-embodiment of the above embodiment, the first control PDU comprises a control PDU for PDCP status report.

As a sub-embodiment of the above embodiment, the first control PDU comprises a STATUS PDU.

As a sub-embodiment of the foregoing embodiment, the first control PDU includes a PDU header, and the PDU header indicates the first status information.

As a sub-embodiment of the foregoing embodiment, the first control PDU includes a PDU header indicating that the PDU includes the first status information.

As an embodiment, the act of sending the first status information over the second radio bearer comprises: transmitting a second PDU over the second radio bearer, the second PDU indicating the first status information, the second PDU being a PDU of the second target layer.

As a sub-embodiment of the above embodiment, the second target layer refers to an SDAP layer.

As a sub-embodiment of the above embodiment, the second target layer refers to a PDCP layer.

As a sub-embodiment of the above embodiment, the second target layer refers to an RLC layer.

As a sub-embodiment of the above embodiment, the PDU of the second target layer comprises an SDAP control PDU.

As a sub-embodiment of the above embodiment, the PDU of the second target layer comprises an SDAP data PDU.

As a sub-embodiment of the above embodiment, the PDU of the second target layer includes a PDCP control PDU.

As a sub-embodiment of the above-mentioned embodiment, the PDU of the second target layer includes an RLC control PDU.

As a sub-embodiment of the foregoing embodiment, the second PDU includes a PDU header, and the PDU header of the second PDU indicates the first status information.

As a sub-embodiment of the foregoing embodiment, the second PDU includes a PDU header indicating that the PDU includes the first status information.

As one embodiment, a first wireless signal is received; in response to receiving the first wireless signal, transmission of the first status information is triggered.

As an embodiment, the first wireless signal is used to request transmission of the first status information in the present application.

As an embodiment, in the present application, the first wireless signal includes first indication information, and the first indication information is used to request transmission of the first status information.

As an embodiment, the first radio signal is used to configure the first radio bearer in this application.

As an embodiment, in this application, the first radio signal is used to configure the third radio bearer, the third radio bearer is different from the first radio bearer, and the third radio bearer is different from the second radio bearer.

As a sub-embodiment of the foregoing embodiment, an SDU of any first-class entity in the first set of SDUs is transmitted over the third radio bearer.

As a sub-embodiment of the foregoing embodiment, the SDU of at least one first-class entity in the first set of SDUs is transmitted over the third radio bearer.

As a sub-embodiment of the above embodiment, the third radio bearer is associated with the first radio bearer.

As a sub-embodiment of the foregoing embodiment, the third radio bearers are in one-to-one correspondence with the first radio bearers.

As an embodiment, the behavior configuration in the present application includes: and (4) adding.

As an embodiment, the behavior configuration in the present application includes: and (5) modifying.

As an embodiment, the behavior configuration in the present application includes: and (5) deleting.

As an embodiment, in the present application, the first wireless signal is transmitted by the second node.

As an embodiment, the first wireless signal includes rrcreeconfiguration in this application.

As an embodiment, the first Radio signal includes a Radio Resource Control (RRC) Message (Message).

As an embodiment, the first radio signal includes all or part of IE (Information Element) in an RRC message in the present application.

As an embodiment, the first radio signal in this application includes all or part of a Field (Field) in an IE in an RRC message.

As an embodiment, the first wireless signal includes a MAC CE (Control Element) in the present application.

As an embodiment, the first wireless signal in this application comprises higher layer signaling.

As an embodiment, the first wireless signal in this application includes physical layer signaling.

As an embodiment, in the present application, the first radio signal is transmitted on a PDCCH (Physical Downlink Control Channel).

As an embodiment, the first wireless signal is transmitted on a PDSCH (Physical Downlink Shared Channel) in the present application.

As an example, the first radio signal is transmitted on a psch (Physical downlink Shared CHannel) in the present application.

As an example, the first radio signal is transmitted on a PSCCH (Physical downlink Control CHannel) in the present application.

As an embodiment, the first wireless signal is transmitted on the Uu interface in this application.

As an example, the first wireless signal is transmitted on a sidelink in this application.

As an embodiment, the method provides a feedback path of state information for the multicast service.

As an example, the benefits of the above method include: and supporting the lossless transmission of the multicast service.

As an example, the benefits of the above method include: the existing unicast path can be utilized without adding a new unicast path.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in fig. 2. Fig. 2 illustrates a diagram of a network architecture 200 of a 5G NR (New Radio, New air interface), LTE (Long-Term Evolution), and LTE-a (Long-Term Evolution-Advanced) system. 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 UE (User Equipment) 201, NG-RAN (next generation radio access Network) 202, 5GC (5G Core Network )/EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server)/UDM (Unified Data Management) 220, and internet service 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 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 transmission of a Terrestrial Network (TN).

As an embodiment, the UE201 is a User Equipment (UE).

As an embodiment, the UE201 is an aircraft.

As an embodiment, the UE201 is a vehicle-mounted terminal.

As an embodiment, the UE201 is a relay.

As an embodiment, the UE201 is a ship.

As an embodiment, the UE201 is an internet of things terminal.

As an embodiment, the UE201 is a terminal of an industrial internet of things.

As an embodiment, the UE201 is a device supporting low-latency high-reliability transmission.

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

For one embodiment, the gNB203 includes a primary node.

As an embodiment, the gNB203 comprises a secondary node.

As an embodiment, the gNB203 includes a base station device (BS).

For one embodiment, the gNB203 comprises a user equipment.

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

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

As one embodiment, the gNB203 supports transmissions of a Terrestrial Network (TN).

As an example, the gNB203 is a macro Cellular (Marco Cellular) base station.

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

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

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

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

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

As an embodiment, the gNB203 is a satellite device.

As an embodiment, the gNB203 is a UE (user equipment).

As an embodiment, the gNB203 is a gateway.

As an embodiment, the gNB203 is a base station device supporting NR.

As an embodiment, the gNB203 is a base station apparatus supporting EUTRA.

As an embodiment, the gNB203 is a base station device supporting WLAN.

As an embodiment, the gNB203 is a base station apparatus supporting BT.

As an embodiment, the first signaling is sent by the UE 201.

As an embodiment, the first control PDU is transmitted by the UE 201.

As an embodiment, the second signaling is sent by the gNB 203.

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 with 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. Above the PHY301, a layer 2(L2 layer) 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control Protocol) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by ciphering packets and provides handover support. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell. 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. The radio protocol architecture of the user plane 350, which includes layer 1(L1 layer) and layer 2(L2 layer), is substantially the same in the user plane 350 as the corresponding layers and sublayers in the control plane 300 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, 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.

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 this application is generated in the RRC 306.

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

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

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

As an embodiment, the first control PDU in the present application is generated in the PDCP354 or PDCP 304.

As an embodiment, the first control PDU in the present application is generated in the RLC353 or RLC 303.

As an embodiment, the second PDU in this application is generated in the SDAP 356.

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 stream from the receiver 454. Receive processor 456 converts the baseband multicarrier symbol stream after the receive analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the 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 rf signals through its respective antenna 420, converts the received rf signals to baseband signals, and provides the baseband signals 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 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 at least: sending first state information through a second radio bearer, where the first state information indicates a missing first SDU set, where the first SDU set includes at least one SDU of a first-class entity, and an SDU of any first-class entity in the first SDU set is transmitted through the first radio bearer; wherein the second radio bearer is different from the first radio bearer, and the first radio bearer and the second radio bearer respectively include the first class entity.

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: sending first state information through a second radio bearer, where the first state information indicates a missing first SDU set, where the first SDU set includes at least one SDU of a first-class entity, and an SDU of any first-class entity in the first SDU set is transmitted through the first radio bearer; wherein the second radio bearer is different from the first radio bearer, and the first radio bearer and the second radio bearer respectively include the first class entity.

As an embodiment, the second communication device 410 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 410 at least: receiving first state information; wherein the first status information is sent through a second radio bearer, the first status information indicates a missing first SDU set, the first SDU set includes at least one SDU of a first type entity, and an SDU of any first type entity in the first SDU set is transmitted through a first radio bearer; the second radio bearer is different from the first radio bearer, and the first radio bearer and the second radio bearer respectively include the first class entity.

As an embodiment, the second communication device 410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving first state information; wherein the first status information is sent through a second radio bearer, the first status information indicates a missing first SDU set, the first SDU set includes at least one SDU of a first type entity, and an SDU of any first type entity in the first SDU set is transmitted through a first radio bearer; the second radio bearer is different from the first radio bearer, and the first radio bearer and the second radio bearer respectively include the first class entity.

For one embodiment, the antenna 452, the receiver 454, the receive processor 456, the controller/processor 459 are configured to receive a first signaling; at least one of the antenna 420, the transmitter 418, the transmit processor 416, and the controller/processor 475 is configured to send first signaling.

For one embodiment, the antenna 452, the receiver 454, the receive processor 456, the controller/processor 459 are configured to receive second signaling; at least one of the antenna 420, the transmitter 418, the transmit processor 416, and the controller/processor 475 is configured to send second signaling.

For one embodiment, the antenna 452, the receiver 454, the receive processor 456, the controller/processor 459 are configured to receive third signaling; at least one of the antenna 420, the transmitter 418, the transmit processor 416, and the controller/processor 475 is configured to send third signaling.

For one embodiment, the antenna 452, the receiver 454, the receive processor 456, the controller/processor 459 are configured to receive a first control PDU; at least one of the antenna 420, the transmitter 418, the transmit processor 416, and the controller/processor 475 is configured to transmit a first control PDU.

As one implementation, the antenna 452, the transmitter 454, the transmit processor 468, the controller/processor 459 are configured to send first signaling; at least one of the antenna 420, the receiver 418, the receive processor 470, the controller/processor 475 is configured to receive a first signaling.

As one implementation, the antenna 452, the transmitter 454, the transmit processor 468, the controller/processor 459 are configured to send second signaling; at least one of the antenna 420, the receiver 418, the receive processor 470, the controller/processor 475 is configured to receive second signaling.

As one implementation, the antenna 452, the transmitter 454, the transmit processor 468, the controller/processor 459 are configured to send third signaling; at least one of the antenna 420, the receiver 418, the receive processor 470, the controller/processor 475 is configured to receive third signaling.

For one implementation, the antenna 452, the transmitter 454, the transmit processor 468, the controller/processor 459 are configured to send a first control PDU; at least one of the antenna 420, the receiver 418, the receive processor 470, the controller/processor 475 is configured to receive a first control PDU.

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

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

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

For one embodiment, the first communication device 450 is a user equipment supporting a large delay difference.

As an embodiment, the first communication device 450 is a user equipment supporting NTN.

As an example, the first communication device 450 is an aircraft device.

For one embodiment, the first communication device 450 is location-enabled.

As an example, the first communication device 450 does not have a capability specification.

As an embodiment, the first communication device 450 is a TN-capable user equipment.

As an embodiment, the second communication device 410 is a base station device (gNB/eNB/ng-eNB).

As an embodiment, the second communication device 410 is a base station device supporting large delay inequality.

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

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

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

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

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

Example 5

Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 5. It is specifically noted that the order in this example does not limit the order of signal transmission and the order of implementation in this application.

For theFirst node U01Receiving a second signaling in step S5101; sending a first signaling through the second radio bearer in step S5102, the first signaling indicating the first status information;

for theSecond node N02In step S5201, the second signaling is transmitted; receiving a first signaling in step S5202;

in embodiment 5, the first signaling is first target layer signaling, and the first target layer is different from a layer to which the first type entity belongs; the second signaling comprises reporting configuration information aiming at the first signaling; the first state information indicates a first missing SDU set, the first SDU set includes at least one SDU of a first type entity, and an SDU of any first type entity in the first SDU set is transmitted through a first radio bearer; the second radio bearer is different from the first radio bearer, and the first radio bearer and the second radio bearer respectively include the first class entity.

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

For one embodiment, the second radio bearer includes an SRB.

For one embodiment, the second radio bearer includes at least one of SRB0, SRB1, SRB2, SRB 3.

In one embodiment, the first radio bearer comprises an MRB and the second radio bearer comprises an SRB.

As an embodiment, the first signaling is transmitted over a Uu interface.

As an embodiment, the first signaling is transmitted on a sidelink.

As an embodiment, the first signaling comprises all or part of a rrcreeconfiguration completestsildelink message.

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

As an embodiment, the first signaling includes all or part of IE (Information Element) in an RRC message.

As an embodiment, the first signaling comprises all or part of a Field (Field) in an IE in an RRC message.

As one embodiment, the first target layer includes an RRC layer.

For one embodiment, the first target layer comprises a NAS layer.

For one embodiment, the first target tier comprises a higher tier.

As an embodiment, the first status information includes all or part of one IE in the first signaling.

As an embodiment, the first status information comprises all or part of a field in the first signaling.

As an embodiment, the first state information is transmitted in a transparent container (transparent container) included in the first signaling.

As an embodiment, the behavior transmission in the present application includes: and (5) sending.

As an embodiment, the behavior transmission in the present application includes: and receiving.

As an embodiment, the first state information is generated by the first type entity in the first radio bearer.

As an embodiment, the first type entity in the first radio bearer sends first indication information to the first target layer, where the first indication information indicates the first status information.

As a sub-embodiment of the above embodiment, the first target layer is a first target layer associated with the first radio bearer.

As an embodiment, the first type entity in the first radio bearer indicates the first status information to the first target layer.

For one embodiment, the first state information is generated by the first target layer.

As an embodiment, the first state information is generated by a first type entity in the second radio bearer.

As an embodiment, a first field in the first status information is configured by the first type entity in the first radio bearer.

As one embodiment, a first field in the first state information is configured by the first target layer.

As an embodiment, the first status information is pre-configured by the first signaling indication.

As an embodiment, indicating that the first state Information is configured by a SIB (System Information Block) of a serving cell of the first node through the first signaling.

As an embodiment, the second signaling comprises all or part of a rrcreeconfigurationsidelink message.

As an embodiment, the second signaling is transmitted over a Uu interface.

As an embodiment, the second signaling is transmitted on a sidelink.

As an embodiment, the second signaling includes a Radio Resource Control (RRC) Message (Message).

As an embodiment, the second signaling includes all or part of IE (Information Element) in an RRC message.

As an embodiment, the second signaling comprises all or part of a Field (Field) in an IE in an RRC message.

As an embodiment, the phrase reporting configuration information for the first signaling includes: and the first signaling reports the used time-frequency resource information.

As an embodiment, the phrase reporting configuration information for the first signaling includes: first enabling information indicating that reporting of first state information through first target layer signaling is allowed.

As an embodiment, the phrase reporting configuration information for the first signaling includes: first enabling information indicating that reporting of the first state information over the second bearer is allowed.

As one embodiment, the first signaling is generated by the first target layer.

For one embodiment, the first signaling is encapsulated by the first target layer.

As one embodiment, the first target tier belongs to the first node.

As an embodiment, the peer layer of the first target layer belongs to the second node.

In one embodiment, the second signaling is processed by the first target layer in response to receiving the second signaling.

As one embodiment, the act of receiving the first signaling includes: a peer layer of the first target layer receives the first signaling.

As one embodiment, the act of receiving the first signaling comprises: receiving the first signaling over a peer-to-peer radio bearer of the second radio bearer.

As one embodiment, the act of receiving the first signaling includes: the peer layer of the first target layer indicates the first status information to a peer entity of a first class entity in the first radio bearer.

As one embodiment, the act of receiving the first signaling includes: the peer layer of the first target layer indicates the first status information to a peer-to-peer radio bearer of the first radio bearer.

As an embodiment, in response to receiving the first signaling, the peer layer of the first target layer indicates the first status information to the peer entity of the first class of entity in the first radio bearer.

In one embodiment, the peer layer of the first target layer indicates the first status information to a peer-to-peer radio bearer of the first radio bearer in response to receiving the first signaling.

As a sub-embodiment of the above embodiment, the peer layer of the first target layer determines the peer-to-peer radio bearer of the first radio bearer according to the stored information.

As a sub-embodiment of the foregoing embodiment, the peer layer of the first target layer determines the peer entity of the first type entity in the first radio bearer according to the stored information.

As an additional embodiment of the sub-embodiment described above, the stored information comprises configuration information for the first radio bearer.

As an additional embodiment of the foregoing sub-embodiment, the stored information includes a first identity, and the first identity is an identity of a peer-to-peer radio bearer of the first radio bearer.

As an additional embodiment of the foregoing sub-embodiment, the stored information includes a first identity, and the first identity is an identity of a peer entity of the first class of entity in the first radio bearer.

As a sub-embodiment of the foregoing embodiment, the peer layer of the first target layer determines the peer entity of the first type entity in the first radio bearer according to the first domain in the first status information.

As a sub-embodiment of the foregoing embodiment, the peer layer of the first target layer determines the peer-to-peer radio bearer of the first radio bearer according to the first field in the first status information.

As an embodiment, a first timer expires and the sending of the first status information is triggered.

As a sub-embodiment of the above embodiment, the first timer is configured by the second signaling.

As a sub-embodiment of the above embodiment, the maximum value of the first timer is configured by the second signaling.

As a sub-embodiment of the above embodiment, the phrase first timer expiring comprises: the value of the first timer is 0.

As a sub-embodiment of the above embodiment, the phrase first timer expiring comprises: the value of the first timer is the maximum value of the first timer.

In one embodiment, the first timer is started in response to receiving the second signaling.

In one embodiment, the first timer is started in response to processing the second signaling.

As an embodiment, the first timer is restarted or started after the first status information is transmitted.

As a sub-embodiment of the above embodiment, the phrase that the first timer is restarted or started comprises: the first timer is set to 0.

As a sub-embodiment of the above embodiment, the phrase that the first timer is restarted or started comprises: the first timer is set to a maximum value of the first timer.

As an adjunct to the above-described embodiments.

As one embodiment, dashed box F1 is optional.

As one embodiment, dashed box F1 exists.

As one example, dashed box F1 is not present.

Example 6

Embodiment 6 illustrates a wireless signal transmission flowchart according to another embodiment of the present application, as shown in fig. 6. It is specifically noted that the order in this example does not limit the order of signal transmission and the order of implementation in this application.

For theFirst node U01Receiving a third signaling in step S6101; transmitting a first control PDU over the second radio bearer in step S6102, the first control PDU indicating the first status information;

for theSecond node N02In step S6201, a third signaling is sent; receiving a first control PDU in step S6202;

in embodiment 6, the first control PDU is a control PDU of a layer to which the first type entity belongs; the third signaling comprises reporting configuration information for the first control PDU; the first state information indicates a first missing SDU set, the first SDU set includes at least one SDU of a first type entity, and an SDU of any first type entity in the first SDU set is transmitted through a first radio bearer; the second radio bearer is different from the first radio bearer, and the first radio bearer and the second radio bearer respectively include the first class entity.

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

In one embodiment, the second radio bearer includes a DRB.

In one embodiment, the first radio bearer comprises an MRB and the second radio bearer comprises a DRB.

As an embodiment, the layer to which the first type entity belongs includes a PDCP layer.

For one embodiment, the layer to which the first type entity belongs includes an RLC layer.

For one embodiment, the first control PDU comprises a PDCP control PDU.

For one embodiment, the first control PDU comprises an RLC control PDU.

As an embodiment, the first class entity in the first radio bearer indicates the first status information to the first class entity in the second radio bearer.

As an embodiment, the first type entity in the first radio bearer sends second indication information to the first type entity in the second radio bearer, where the second indication information indicates the first status information.

As an embodiment, the first status information is generated by the first type entity in the second radio bearer.

As an embodiment, the first control PDU is generated by the first type entity in the first radio bearer.

As one embodiment, the first control PDU is generated by the first radio bearer.

As an embodiment, the first type entity in the first radio bearer transmits the first control PDU to the first type entity in the second radio bearer.

As an embodiment, the first control PDU is generated by the first type entity in the second radio bearer.

As an embodiment, the first control PDU is generated by the second radio bearer.

As one embodiment, the first control PDU includes a fourth field indicating an identity of the first radio bearer.

As an embodiment, the first control PDU comprises a fourth field indicating that the belonging control PDU needs to be forwarded.

As an embodiment, the first domain in the first status information is configured by the first type entity in the second radio bearer.

As an embodiment, the behavior configuration in the present application includes: and (4) setting.

As an embodiment, the behavior configuration in the present application includes: and (4) generating.

As an embodiment, the first status information is pre-configured by the first control PDU indication.

As an embodiment, transmitting the first control PDU over the second radio bearer is preconfigured.

As an embodiment, the third signaling comprises rrcreeconfiguration.

As an embodiment, the third signaling comprises RRCReconfigurationSidelink.

As an embodiment, the third signaling is transmitted on a Uu interface.

As an embodiment, the third signaling is transmitted on a sidelink.

As an embodiment, the third signaling includes a Radio Resource Control (RRC) Message (Message).

As an embodiment, the third signaling includes all or part of IE (Information Element) in an RRC message.

As an embodiment, the third signaling comprises all or part of a Field (Field) in an IE in an RRC message.

As an embodiment, the reporting configuration information of the phrase for the first control PDU includes: second enabling information indicating that reporting of the first state information over the second radio bearer is allowed.

As an embodiment, the reporting configuration information of the phrase for the first control PDU includes: priority of the first control PDU.

As a sub-embodiment of the above embodiment, the priority of the first control PDU refers to a processing priority of the first control PDU.

As a sub-embodiment of the above embodiment, the priority of the first control PDU refers to a transmission priority of the first control PDU.

As an embodiment, the second radio bearer is selected by the first node when the third signaling is not received.

As one embodiment, the second radio bearer is selected by the first node.

As an example, the benefits of the above method include: the user can select the second radio bearer by himself, which can reduce signaling overhead.

As one embodiment, the act of receiving a first control PDU comprises: receiving the first control PDU through a peer entity of a first class entity in the second radio bearer.

As one embodiment, the act of receiving a first control PDU comprises: receiving the first control PDU over a peer-to-peer radio bearer of the second radio bearer.

As an embodiment, the peer entity of the first class entity in the second radio bearer indicates the first status information to the peer entity of the first class entity in the first radio bearer in response to receiving the first control PDU.

As an embodiment, in response to receiving the first control PDU, the peer to peer radio bearer of the second radio bearer indicates the first status information to the peer to peer radio bearer of the first radio bearer.

As a sub-embodiment of the foregoing embodiment, the peer entity of the first type entity in the second radio bearer determines the peer entity of the first type entity in the first radio bearer according to the stored information.

As a sub-embodiment of the foregoing embodiment, the peer entity of the first type entity in the second radio bearer determines the peer radio bearer of the first radio bearer according to the stored information.

As a sub-embodiment of the foregoing embodiment, the peer-to-peer radio bearer of the second radio bearer determines the peer-to-peer radio bearer of the first radio bearer according to the stored information.

As a sub-embodiment of the foregoing embodiment, the peer-to-peer radio bearer of the second radio bearer determines the peer-to-peer entity of the first class entity in the first radio bearer according to the stored information.

As a sub-embodiment of the foregoing embodiment, the peer entity of the first type entity in the second radio bearer determines the peer entity of the first type entity in the first radio bearer according to the first domain in the first status information.

As a sub-embodiment of the foregoing embodiment, the peer entity of the first class entity in the second radio bearer determines the peer radio bearer of the first radio bearer according to the first domain in the first status information.

As a sub-embodiment of the foregoing embodiment, the peer-to-peer radio bearer of the second radio bearer determines the peer-to-peer entity of the first kind of entity in the first radio bearer according to the first domain in the first status information.

As a sub-embodiment of the foregoing embodiment, the peer-to-peer radio bearer of the second radio bearer determines the peer-to-peer radio bearer of the first radio bearer according to the first field in the first status information.

As a sub-embodiment of the above embodiment, the first timer is configured by the third signaling.

As a sub-embodiment of the above embodiment, a maximum value of the first timer is configured by the third signaling.

As a sub-embodiment of the above, the phrase first timer expiring comprises: the value of the first timer is 0.

As a sub-embodiment of the above-mentioned embodiment, the first timer is formed by a fourth signaling, and the fourth signaling is different from the third signaling and the second signaling.

As an additional embodiment of the sub-embodiment described above, the fourth signaling includes rrcreeconfiguration.

As an additional embodiment of the sub-embodiment, the fourth signaling comprises RRCReconfigurationSidelink.

As an additional embodiment of the sub-embodiment described above, the fourth signaling is transmitted over the Uu interface.

As an additional embodiment of the sub-embodiment described above, the fourth signaling is transmitted on a secondary link.

As an auxiliary embodiment of the foregoing sub-embodiment, the fourth signaling includes a Radio Resource Control (RRC) Message (Message).

As an auxiliary embodiment of the foregoing sub-embodiment, the fourth signaling includes all or part of IE (Information Element) in an RRC message.

As an additional embodiment of the sub-embodiment, the fourth signaling comprises a whole or partial Field (Field) in an IE of an RRC message.

As a sub-embodiment of the above embodiment, a maximum value of the first timer is pre-configured.

As one embodiment, dashed box F1 is optional.

As one example, dashed box F1 exists.

As one example, dashed box F1 is not present.

Example 7

Embodiment 7 illustrates a schematic diagram of transmitting the first signaling through the second radio bearer according to an embodiment of the present application, as shown in fig. 7.

In fig. 7, a first target layer 7105 belongs to a first node; the first target layer 7205 belongs to a second node; the child bearer 7104 and the child bearer 7114 belong to a first node; child bearer 7204 and child bearer 7214 belong to a second node; the sub-bearer 7104 comprises said first type entity 7101; the sub-bearer 7114 comprises said first type entity 7111; sub-bearer 7204 comprises said first type entity 7201; the sub-bearer 7214 comprises said first type entity 7211.

As an example, the sub-bearer 7104 and the sub-bearer 7114 are associated with the same first target layer in fig. 7.

As an example, the sub-bearers 7104 and 7114 in fig. 7 are controlled by the same first target layer.

As an example, the sub-bearers 7204 and 7214 of fig. 7 are associated with the same first target layer.

As an example, the sub-bearers 7204 and 7214 of fig. 7 are controlled by the same first target layer.

As an example, sub-bearers 7104 and 7114 in fig. 7 each comprise said first type entities.

As an example, sub-bearer 7204 and sub-bearer 7104 are peer-to-peer sub-bearers in fig. 7.

As an example, sub-bearer 7214 and sub-bearer 7114 are peer-to-peer sub-bearers in fig. 7.

As an embodiment, the PDU of the layer to which the entity of the first type sent through the sub-bearer 7204 belongs is received by the sub-bearer 7104.

As an example, the first type entity 7101 in sub-bearer 7104 and the first type entity 7201 in sub-bearer 7204 in fig. 7 are peer entities.

As an example, the first type entity 7111 in the sub-bearer 7114 and the first type entity 7211 in the sub-bearer 7214 are peer entities in fig. 7.

As an embodiment, SDUs of entities of the first type sent by the entity of the first type 7201 are received by the entity of the first type 7101.

As an embodiment, the PDU of the first type entity sent by the first type entity 7201 is received by the first type entity 7101.

As an embodiment, the PDU of the layer to which the first type entity belongs, which is transmitted through the first type entity 7201, is received by the first type entity 7101.

As an embodiment, the signaling of the first target layer sent by the first target layer 7105 is received by the first target layer 7205.

For one embodiment, the signaling of the first target layer sent by the first target layer 2105 is received by the first target layer 7105.

As an embodiment, the signaling of the first target layer sent by the first target layer 7105 is processed by the first target layer 7205.

As an embodiment, the signaling of the first target layer sent by the first target layer 2105 is processed by the first target layer 7105.

As an embodiment, in this application, the PDU of the first type entity includes a control PDU of the first type entity.

As an embodiment, in this application, the PDU of the first type entity includes a data PDU of the first type entity.

As an embodiment, in this application, the PDU of the first type entity includes a control PDU of a layer to which the first type entity belongs.

As an embodiment, in this application, the PDU of the first type entity includes a data PDU of a layer to which the first type entity belongs.

As an example, the first target layer belonging to the first node and the first target layer belonging to the second node in fig. 7 are peer layers.

As an example, the first target layer 7105 and the layer 7205 belonging to the first target layer in fig. 7 are peers of each other.

As an example, the sub-bearer 7104 in fig. 7 is the first radio bearer.

As an example, sub-bearer 7114 in fig. 7 is the second radio bearer.

As an example, sub-bearer 7204 in fig. 7 is a peer-to-peer radio bearer for the first radio bearer.

As an example, sub-bearer 7214 in fig. 7 is a peer-to-peer radio bearer of the second radio bearer.

As an embodiment, the first target layer is an RRC layer, the layer to which the first type entity belongs is a PDCP layer, and the first type entity includes a PDCP entity.

As an embodiment, the first signaling is generated by the first target layer, the first signaling indicating the first status information.

As an embodiment, a first signaling is sent through the second radio bearer, and the first signaling indicates the first status information.

As one embodiment, the act of receiving the first signaling comprises: a peer layer of the first target layer receives the first signaling.

As one embodiment, the act of receiving the first signaling includes: receiving the first signaling over a peer-to-peer bearer of the second wireless bearer.

As an embodiment, the first state information is generated by the first type entity 7101.

As an embodiment, the first type entity 7101 sends first indication information to the first target layer 7105, where the first indication information indicates the first status information.

As an embodiment, the first type entity 7101 in the sub-bearer 7104 indicates the first status information to the first target layer 7105.

As an embodiment, the first type entity 7101 indicates the first status information to the first target layer 7105.

As an embodiment, the first signaling is generated by the first target layer 7105.

For one embodiment, the first state information is generated by a first target layer.

For one embodiment, the first state information is generated by the first target layer 7105.

As an embodiment, the first signaling is sent through a sub-bearer 7114, and the first signaling indicates the first status information.

As one embodiment, the act of receiving the first signaling includes: the first target layer 7205 receives the first signaling.

As an embodiment, in response to receiving the first signaling, the first target layer 7205 indicates the first status information to the sub-bearer 7204.

As an embodiment, the first target layer 7205 in the second node indicates the first status information to the second node subbearer 7204 in response to receiving the first signaling.

As an embodiment, the second set of SDUs is transmitted in response to receiving the first signaling.

In one embodiment, the second set of SDUs is transmitted in response to receiving the first state information.

As an embodiment, in this application, the second SDU set includes at least one SDU of the first-class entity.

As a sub-embodiment of the foregoing embodiment, the second SDU set includes a plurality of SDUs of the first-class entity, and the SDU of the first-class entity is one of the SDUs of the first-class entities.

As a sub-embodiment of the foregoing embodiment, the second SDU set includes K first-class entities of SDUs, where an SDU of one first-class entity is one of the K first-class entities, and K is a non-negative integer.

As an additional example of the above sub-embodiment, K is a positive integer.

As an additional embodiment of the above sub-embodiments, K is a positive integer greater than 1.

As an embodiment, in this application, the second SDU set includes SDUs of the first type entity in at least one first SDU set.

As an embodiment, in this application, the second set of SDUs does not include SDUs of any entity of the first type in the first set of SDUs.

As an embodiment, in this application, the second set of SDUs is transmitted over the first radio bearer.

As an embodiment, in this application, the second set of SDUs is transmitted over the second radio bearer.

As an embodiment, in the present application, the second set of SDUs is transmitted over a radio bearer other than the first radio bearer and the second radio bearer.

As an embodiment, in the present application, an SDU of at least one first-class entity in the second set of SDUs is transmitted through the first radio bearer, and an SDU of at least one first-class entity in the second set of SDUs is transmitted through the second radio bearer.

Example 8

Embodiment 8 illustrates a schematic diagram of transmitting the first control PDU through the second radio bearer according to an embodiment of the present application, as shown in fig. 8. In fig. 8, sub-bearer 8104 and sub-bearer 8114 belong to a first node; child bearer 8204 and child bearer 8214 belong to the second node; a sub-bearer 8104 comprises the first type entity 8101; a sub-bearer 8114 comprises the first type entity 8111; a sub-bearer 8204 comprises the first type entity 8201; the sub-bearer 8214 comprises said first type entity 8211.

As an example, the sub-bearers 8104 and 8114 in fig. 7 respectively include the first type entities.

As an example, in fig. 7, the sub-bearer 8204 and the sub-bearer 8104 are peer-to-peer sub-bearers.

As an example, in fig. 7, a sub-bearer 8214 and a sub-bearer 8114 are peer-to-peer sub-bearers.

As an embodiment, the PDU of the layer to which the first type entity sent through the sub-bearer 8204 belongs is received by the sub-bearer 8104.

As an embodiment, the first type entity 8101 in the sub-bearer 8104 and the first type entity 8201 in the sub-bearer 8204 in fig. 7 are peer entities.

As an embodiment, the first type entity 8111 in the sub-bearer 8114 and the first type entity 8211 in the sub-bearer 8214 in fig. 7 are peer entities.

As an embodiment, SDUs of a first type entity transmitted by the first type entity 8201 are received by the first type entity 8101.

As an embodiment, the PDU of the first type entity sent by the first type entity 8201 is received by the first type entity 8101.

As an embodiment, the PDU of the layer to which the first type entity belongs, which is sent by the first type entity 8201, is received by the first type entity 8101.

As an example, the sub-bearer 8104 in fig. 8 is the first radio bearer.

As an example, sub-bearer 8114 in fig. 8 is the second radio bearer.

As an example, the sub-bearer 8204 in fig. 8 is a peer-to-peer radio bearer of the first radio bearer.

As an example, the sub-bearer 8214 in fig. 8 is a peer-to-peer radio bearer of the second radio bearer.

As an embodiment, the first control PDU is sent over the second radio bearer, the first control PDU indicating the first status information.

As an embodiment, the peer entity of the first type of entity in the second radio bearer indicates the first control PDU to the peer entity of the first type of entity in the first radio bearer in response to receiving the first control PDU.

As an embodiment, the first state information is generated by the first type entity 8101.

As an embodiment, the first type entity 8101 indicates the first status information to the first type entity 8111.

As an embodiment, the first control PDU is generated by 8111.

As an embodiment, the first control PDU is sent through the sub-bearer 8114, where the first control PDU indicates the first status information.

As one embodiment, the act of receiving a first control PDU comprises: the first type entity 8211 receives the first control PDU.

As an embodiment, said first type entity 8211 indicates said first status information to said first type entity 8201 in response to receiving said first control PDU.

As an embodiment, in response to receiving the first control PDU, the first type entity 8211 indicates the first control PDU to the first type entity 8201.

As an embodiment, the second set of SDUs is transmitted in response to receiving the first control PDU.

Example 9

Embodiment 9 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. 9. In fig. 9, the processing means 900 in the first node comprises a first receiver 901, a first transceiver 902 and a first transmitter 903.

The first transmitter 903, configured to send first status information through a second radio bearer, where the first status information indicates a missing first SDU set, the first SDU set includes at least one SDU of a first type entity, and an SDU of any first type entity in the first SDU set is transmitted through the first radio bearer.

In embodiment 9, the second radio bearer is different from the first radio bearer, and the first radio bearer and the second radio bearer respectively include the entities of the first class.

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

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

For one embodiment, the first type of entity includes a PDCP entity.

For one embodiment, the first type of entity comprises an RLC entity.

As an embodiment, the SDUs of the first type entity include PDCP SDUs.

As an embodiment, the SDU of the first type entity includes an RLC SDU.

As a sub-embodiment of the above embodiment, the first target layer refers to an RRC layer.

As a sub-embodiment of the above embodiment, the first target layer refers to NAS.

As a sub-embodiment of the foregoing embodiment, the layer to which the first type entity belongs includes an RLC layer.

A first receiver 901, which receives the second signaling;

in embodiment 9, the second signaling includes reporting configuration information for the first signaling.

A first receiver 901, which receives the third signaling;

in embodiment 9, the third signaling includes reporting configuration information for the first control PDU.

For one embodiment, the first receiver 901 includes an antenna 452, a receiver 454, a multi-antenna receive processor 458, a receive processor 456, a controller/processor 459, a memory 460, and a data source 467 of fig. 4.

For one embodiment, the first receiver 901 includes the antenna 452, the receiver 454, the multi-antenna receive processor 458, and the receive processor 456 of fig. 4.

For one embodiment, the first receiver 901 includes the antenna 452, the receiver 454, and the receiving processor 456 in fig. 4.

The first transceiver 902 includes, for one embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467, the transmitter 454, the multi-antenna transmit processor 457, and the transmit processor 468 of fig. 4 of the present application.

For one embodiment, the first transceiver 902 includes the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the transmitter 454, the multi-antenna transmit processor 457, and the transmit processor 468 of fig. 4.

For one embodiment, the first transceiver 902 includes an antenna 452, a receiver 454, a receive processor 456, a transmitter 454, and a transmit processor 468 of fig. 4.

The first transmitter 903 includes, for one embodiment, the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459, the memory 460, and the data source 467 of fig. 4 of the present application.

The first transmitter 903 includes, for one embodiment, an antenna 452, a transmitter 454, a multi-antenna transmission processor 457, and a transmission processor 468 in fig. 4.

The first transmitter 903 includes, for one embodiment, the antenna 452, the transmitter 454, and the transmitting processor 468 of fig. 4 of the present application.

Example 10

Embodiment 10 illustrates a block diagram of a processing apparatus for a second node according to an embodiment of the present application; as shown in fig. 10. In fig. 10, the processing means 1000 in the second node comprises a transmitter 1001 of the second type, a second transceiver 1002 and a second receiver 1003.

A second receiver 1003 receiving the first state information;

in embodiment 10, the first status information is sent over a second radio bearer, where the first status information indicates a missing first set of SDUs, where the first set of SDUs includes SDUs of at least one first-class entity, and an SDU of any first-class entity in the first set of SDUs is transmitted over the first radio bearer; the second radio bearer is different from the first radio bearer, and the first radio bearer and the second radio bearer respectively include the first class entity.

A second transmitter 1001 which transmits a second signaling;

in embodiment 10, the second signaling includes reporting configuration information for the first signaling.

A second transmitter 1001 which transmits a third signaling;

in embodiment 10, the third signaling includes reporting configuration information for the first control PDU.

For one embodiment, the second type of transmitter 1001 includes the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475, and the memory 476 of fig. 4.

For one embodiment, the second type transmitter 1001 includes the antenna 420, the transmitter 418, the multi-antenna transmit processor 471 and the transmit processor 416 shown in fig. 4.

The second type transmitter 1001 includes the antenna 420, the transmitter 418, and the transmission processor 416 of fig. 4 of the present application as an example.

For one embodiment, the second type of transceiver 1002 includes the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475, the memory 476, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, and the memory 476 of fig. 4 of the present application.

For one embodiment, the second transceiver 1002 includes the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the receiver 418, the multi-antenna receive processor 472, and the receive processor 470 shown in fig. 4.

For one embodiment, the second type transceiver 1002 includes the antenna 420, the transmitter 418, the transmit processor 416, the receiver 418, and the receive processor 470 shown in fig. 4.

The second type of receiver 1003 includes, for one embodiment, the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475, and the memory 476 of fig. 4.

The receiver 1003 of the second type includes, for one embodiment, the antenna 420, the receiver 418, the multi-antenna receiving processor 472, and the receiving processor 470 in fig. 4.

The receiver 1003 of the second type includes, as an embodiment, the antenna 420, the receiver 418, and the receiving processor 470 in fig. 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. 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 plane, the aircraft, small aircraft, the cell-phone, the panel computer, the notebook, vehicle-mounted Communication equipment, wireless sensor, network card, thing networking terminal, the RFID terminal, NB-IOT terminal, Machine Type Communication (MTC) terminal, eMTC (enhanced MTC) terminal, the data card, network card, vehicle-mounted Communication equipment, low-cost cell-phone, wireless Communication equipment such as low-cost panel computer. The base station or the system device in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, a gNB (NR node B) NR node B, a TRP (Transmitter Receiver Point), and other wireless communication devices.

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

Claims

1. A first node configured for wireless communication, comprising:

2. The first node of claim 1, wherein the first state information comprises a first field, and wherein the first field in the first state information indicates the first radio bearer.

3. The first node of claim 1 or 2, wherein the act of sending the first status information over the second radio bearer comprises:

4. The first node of claim 3, comprising:

a first receiver receiving the second signaling;

5. The first node of claim 1 or 2, wherein the act of sending the first status information over the second radio bearer comprises:

and transmitting a first control PDU through the second radio bearer, wherein the first control PDU indicates the first state information, and the first control PDU is a control PDU of a layer to which the first type of entity belongs.

6. The first node of claim 5, comprising:

a first receiver receiving the third signaling;

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

a first receiver that receives a first wireless signal;

wherein the sending of the first status information is triggered in response to receiving the first wireless signal.

8. A second node configured for wireless communication, comprising:

a second receiver receiving the first state information;

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

sending first state information through a second radio bearer, where the first state information indicates a missing first SDU set, where the first SDU set includes at least one SDU of a first-class entity, and an SDU of any first-class entity in the first SDU set is transmitted through the first radio bearer;

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

receiving first state information;