CN114650549A

CN114650549A - Data processing method and device of IAB (inter-Access node) and IAB

Info

Publication number: CN114650549A
Application number: CN202011509306.1A
Authority: CN
Inventors: 李思栋; 王达
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2022-06-21
Also published as: WO2022127579A1

Abstract

The embodiment of the invention provides an IAB (inter access node) and a data processing method and device thereof, wherein the method comprises the following steps: the first IAB node sends BAP PDU; the BAP packet head of the BAP PDU comprises the residual transmission hop count; wherein the remaining transmission hop count is used to indicate the remaining transmission hop count of the current data radio bearer DRB from the first IAB node to the target node. The embodiment of the invention adds the residual transmission hop count which is still experienced by the DRB from the current IAB node to the target node in the BAP packet header, thereby enabling the residual transmission hop count of different DRBs to be considered when the IAB network is scheduled, and reducing the network transmission delay.

Description

Data processing method and device of IAB (inter-Access node) and IAB

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an IAB node and a data processing method and apparatus for the IAB node.

Background

The IAB (Integrated Access and Backhaul) network technology achieves the purpose of expanding the coverage area of the base station by relaying wireless signals among a plurality of nodes.

With the further development of the IAB technology, the topology fairness of the IAB network is particularly important, and the IAB network enhances coverage through multiple hops and also increases the end-to-end transmission delay. In the IAB network deployment, the network deployment is composed of IAB donor (IAB host node or central control node), IAB nodes and terminals. The IAB donor is used for connecting the core network, returning the information of the IAB node and the terminal to the core network and transmitting the information of the core network to the IAB node and the terminal. The IAB donor is also responsible for managing IAB nodes throughout the IAB network. The IAB node is responsible for relaying and transmitting information of the terminal to the IAB donor and relaying and transmitting information of the IAB donor to the terminal through a wireless link (Uu interface). The IAB nodes and the IAB donor are connected through wireless links, namely, Uu interfaces.

For the existing IAB network, the scheduling method based on the non-IAB network does not consider the remaining number of hops that a DRB (Data Radio Bearer) needs to experience from the current IAB node to the target node during scheduling, for example, for two DRBs with the same QoS (Quality of Service) requirement but different remaining number of hops, the priority during scheduling of the IAB node should be different, and in the case of being able to guarantee the QoS of the DRBs with few remaining number of hops, the DRBs with many remaining number of hops should be preferentially transmitted. The current network cannot consider the residual transmission hop count of the DRB during scheduling, which is not favorable for network fairness.

Disclosure of Invention

Embodiments of the present invention provide an IAB node and a data processing method and apparatus for an IAB node, so as to solve the problem that the remaining transmission hop count of a DRB cannot be considered when scheduling is performed in the prior art, which is not favorable for network fairness.

In order to solve the above problem, an embodiment of the present invention provides a data processing method for integrated access to an IAB node, where the method is executed by a first IAB node, and the method includes:

sending an adaptive backhaul protocol BAP protocol data unit PDU; the BAP packet head of the BAP PDU comprises the residual transmission hop count;

wherein the remaining transmission hop count is used to indicate the remaining transmission hop count of the current data radio bearer DRB from the first IAB node to the target node.

Wherein, before the sending an adaptive backhaul protocol, BAP, protocol data unit, PDU, if the first IAB node is an IAB donor node, the method further comprises:

receiving a downlink data packet sent by an upper layer;

building a BAP PDU according to the downlink data packet; the BAP packet header of the BAP PDU comprises the residual transmission hop count; the remaining transmission hop count is used for indicating the total hop count of the current DRB from the IAB host node to the target node.

Wherein, in case that the first IAB node is an access IAB node of a terminal, before the sending an adaptive backhaul protocol BAP protocol data unit PDU, the method further comprises:

receiving an uplink data packet sent by a terminal;

building a BAP PDU according to the uplink data packet; the BAP packet header of the BAP PDU comprises the residual transmission hop count; the remaining transmission hop count is used for indicating the total hop count of the current DRB from the access IAB node to the IAB host node.

Wherein, before the sending an adaptive backhaul protocol, BAP, protocol data unit, PDU, when the first IAB node has an uplink data transmission requirement, the method further includes:

building a BAP PDU according to uplink data to be transmitted; the BAP packet header of the BAP PDU comprises the residual transmission hop count; the remaining transmission hop count is used to indicate a total hop count of the current DRB from the first IAB node to the IAB donor node.

The embodiment of the invention also provides a data processing method for integrating the access back-fed IAB node, which is executed by a second IAB node, and the method comprises the following steps:

receiving BAP PDU sent by a first IAB node; the BAP packet head of the BAP PDU comprises the residual transmission hop count;

Wherein, the BAP packet header of the BAP PDU further comprises: a destination address;

after receiving the BAP PDU sent by the first IAB node, the method further comprises:

and if the destination address in the BAP header of the received BAP PDU is the address of the second IAB node, deleting the BAP header and then submitting the BAP service data unit SDU to an upper layer.

Wherein, the BAP header of the BAP PDU further comprises: a destination address;

if the destination address in the BAP header of the received BAP PDU is not the address of the second IAB node, sending the BAP PDU to the next hop IAB node; wherein, the remaining transmission hop count in the BAP packet header of the BAP PDU is the remaining transmission hop count in the BAP packet header of the received BAP PDU minus 1.

if the destination address in the BAP header of the received BAP PDU is not the address of the second IAB node, the residual transmission hop count in the BAP header of the received BAP PDU is equal to 0 or 1, and the BAP PDU is sent to the next hop IAB node; and the residual transmission hop count in the BAP packet header of the BAP PDU is the same as the residual transmission hop count in the BAP packet header of the received BAP PDU.

Wherein, the value of the residual transmission hop count included in the BAP packet header is a non-negative number.

An embodiment of the present invention further provides a data processing apparatus for integrated access to an IAB node, which is applied to a first IAB node, and includes:

a sending unit, configured to send an adaptive backhaul protocol BAP protocol data unit PDU; the BAP packet head of the BAP PDU comprises the residual transmission hop count;

The embodiment of the invention also provides an IAB node, which is a first IAB node and comprises a memory, a transceiver and a processor;

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

wherein, the remaining transmission hop count is used to indicate the remaining transmission hop count of the current data radio bearer DRB from the first IAB node to the target node.

Wherein the processor is further configured to read the computer program in the memory and perform the following operations:

receiving a downlink data packet sent by an upper layer under the condition that the first IAB node is an IAB host node;

receiving an uplink data packet sent by a terminal under the condition that the first IAB node is an access IAB node of the terminal;

under the condition that the first IAB node has uplink data transmission requirements, establishing a BAP PDU according to uplink data to be transmitted; the BAP packet header of the BAP PDU comprises the residual transmission hop count; the remaining transmission hop count is used to indicate a total hop count of the current DRB from the first IAB node to the IAB donor node.

The embodiment of the present invention further provides a data processing apparatus for integrated access to a backhaul IAB node, which is applied to a second IAB node, and includes:

a receiving unit, configured to receive a BAP PDU sent by a first IAB node; the BAP packet head of the BAP PDU comprises the residual transmission hop count;

The embodiment of the invention also provides an IAB node, which is a second IAB node and comprises a memory, a transceiver and a processor;

the processor is further configured to read the computer program in the memory and perform the following operations:

if the destination address in the BAP header of the received BAP PDU is not the address of the second IAB node, the residual transmission hop count in the BAP header of the received BAP PDU is equal to 0 or 1, and the BAP PDU is sent to the next-hop IAB node; and the residual transmission hop count in the BAP packet header of the BAP PDU is the same as the residual transmission hop count in the BAP packet header of the received BAP PDU.

An embodiment of the present invention further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is configured to cause the processor to execute the method described above.

The technical scheme of the invention at least has the following beneficial effects:

in the data processing method and device of the IAB node and the IAB node of the embodiment of the invention, the remaining transmission hops that the DRB still needs to experience from the current IAB node to the target node are added in the BAP header in the IAB network, so that the remaining transmission hops of different DRBs can be considered when the IAB network is scheduled, and the network transmission delay is reduced.

Drawings

FIG. 1 illustrates a topology diagram of an IAB network to which embodiments of the present invention are applicable;

fig. 2 is a schematic diagram illustrating a step of a data processing method of an IAB node according to an embodiment of the present invention;

fig. 3 is a second schematic diagram illustrating steps of a data processing method of an IAB node according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a data processing apparatus of an IAB node according to an embodiment of the present invention;

fig. 5 is a second schematic structural diagram of a data processing apparatus of an IAB node according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an IAB node according to an embodiment of the present invention;

fig. 7 is a second schematic structural diagram of an IAB node according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 shows a topology diagram of an IAB network to which an embodiment of the present invention is applicable. In the IAB network deployment, the IAB network deployment is composed of IAB donor (IAB host node or central control node), IAB nodes (IAB node 1, IAB node 2, IAB node 3, etc.) and terminals. The IAB donor is used for connecting the core network, returning the information of the IAB node and the terminal to the core network and transmitting the information of the core network to the IAB node and the terminal. The IAB donor is also responsible for managing IAB nodes throughout the IAB network.

The IAB node is responsible for relaying and transmitting information of the terminal to the IAB node and relaying and transmitting information of the IAB donor to the terminal through a wireless link (Uu interface). The IAB nodes and the IAB donor are connected through wireless links, namely, Uu interfaces.

The relay function of the IAB node is implemented by a BAP layer (Backhaul Protocol layer) in the IAB node.

The terminal referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

As shown in fig. 2, an embodiment of the present invention provides a data processing method for integrated access backhaul IAB node, which is executed by a first IAB node, and the method includes:

step 201, sending adaptive backhaul protocol BAP protocol data unit PDU; the BAP packet head of the BAP PDU comprises the residual transmission hop count; wherein the remaining transmission hop count is used to indicate the remaining transmission hop count of the current data radio bearer DRB from the first IAB node to the target node.

In the embodiment of the invention, the residual transmission hop count of the DRB from the current IAB node to the target node is added in the BAP packet head, so that the residual transmission hop count of different DRBs can be considered during the scheduling of an IAB network, and the network transmission delay is reduced.

It should be noted that the data processing method is applicable to both uplink transmission and downlink transmission.

As an optional embodiment, in downlink transmission, in a case that the first IAB node is an IAB donor node (i.e., an IAB donor), before step 201, the method further includes:

receiving a downlink data packet sent by an upper layer;

In other words, for downlink transmission, when the IAB-donor constructs the BAP PDU, the remaining transmission hop count of the DRB is added in the BAP packet header, and the remaining transmission hop count of the current DRB refers to the total hop count of the DRB completing end-to-end transmission from the IAB donor to the target IAB node. For example, as shown in FIG. 1, IAB node 1 is the parent node of IAB node 2, IAB node 3 is the child node of IAB node 2, and IAB node 3 is the descendant node of IAB node 1. When the IAB-node constructs a BAP PDU, if a downlink data packet is sent to a terminal, the BAP header includes 2 hops in the number of remaining transmission hops, that is, one relay node (IAB node 1) exists between the IAB node 2 and the IAB node.

As another optional embodiment, in uplink transmission, in a case that the first IAB node is an access IAB node of a terminal, before step 201, the method further includes:

receiving an uplink data packet sent by a terminal;

In other words, for uplink transmission, the IAB node receives an uplink data packet from the terminal, and when the BAP PDU is constructed, the remaining transmission hop count of the DRB is added in the BAP header, where the remaining transmission hop count of the current DRB refers to the total hop count of the DRB completing end-to-end transmission from the current IAB node to the IAB-donor. For example, as shown in fig. 1, the first IAB node is IAB node 2, and when the IAB node 2 creates a BAP PDU, the remaining transmission hop count of the DRB is added to the BAP header to be 2.

As another optional embodiment, in uplink transmission, in case that the first IAB node has an uplink data transmission requirement by itself, before step 201, the method further includes:

In other words, for uplink transmission, if the IAB node has an uplink data transmission requirement, the remaining transmission hop count of the DRB is added in the BAP header, and the remaining transmission hop count of the current DRB refers to the total hop count of the DRB completing end-to-end transmission from the current IAB node to the IAB-donor. For example, as shown in fig. 1, the first IAB node is IAB node 3, and when the IAB node 3 sets up the BAP PDU, the remaining transmission hop count of the DRB is increased to 3 in the BAP header.

In summary, in the IAB network provided in the embodiment of the present invention, the remaining transmission hops that the DRBs still need to experience from the current IAB node to the target node are added in the BAP header, so that the remaining transmission hops of different DRBs can be considered during the IAB network scheduling, so as to reduce the network transmission delay.

As shown in fig. 3, an embodiment of the present invention further provides a data processing method for integrated access to an IAB node, where the method is executed by a second IAB node, and the method includes:

step 301, receiving a BAP PDU sent by a first IAB node; the BAP packet header of the BAP PDU comprises the residual transmission hop count; wherein the remaining transmission hop count is used to indicate the remaining transmission hop count of the current data radio bearer DRB from the first IAB node to the target node.

It should be noted that the data processing method is applicable to both uplink transmission and downlink transmission. That is, the first IAB node may be a node in the uplink direction of the second IAB node, or may be a node in the downlink direction of the second IAB node, and is not limited in this respect.

It should be noted that, the BAP header of the BAP PDU further includes: a destination address; the destination address is used to indicate the last IAB node in the transmission path of the DRB carried by the BAP PDU. For example, as shown in fig. 1, the IAB donor sends the DRB to the terminal through the relay of the IAB node 1 and the IAB node 2, and the destination address in the BAP header of the BAP PDU constructed by the IAB donor is the address of the IAB node 2.

As an alternative embodiment, after step 301, the method further comprises:

In other words, when receiving the BAP PDU sent by the previous hop IAB node or IAB-donor, if the destination address in the BAP header is found to be the current IAB node, the IAB node deletes the BAP header and submits the BAP SDU to the upper layer.

As another alternative, after step 301, the method further comprises:

In other words, when receiving the BAP PDU sent by the previous-hop IAB node or IAB-node, the IAB node subtracts 1 from the remaining transmission hop count in the BAP header and sends the resulting packet to the next-hop IAB node if the destination address in the BAP header is found not to be the current IAB node.

Because the local rerouting may cause a change of a transmission path, which results in an actual transmission hop count that is greater than an end-to-end hop count of an initially selected path, it should be noted that a value of a remaining transmission hop count included in the BAP header is a non-negative number. That is, the embodiment of the present invention should avoid the situation that the number of remaining transmission hops is reduced to negative. Therefore, as a further alternative embodiment, after step 301, the method further comprises:

In other words, if the IAB node finds that the destination address in the BAP header is not the current IAB node and the number of remaining hops is 1 or 0, it is not reduced. When the remaining hop count is reduced to 1 or 0 and the destination address is not reached, it is described that local rerouting occurs, and how to schedule the routed packet may be based on a specific implementation, for example, a data packet for rerouting is scheduled preferentially, which is not limited specifically herein.

In order to more clearly describe the data processing method of the IAB node provided in the present invention, the following is described in detail with reference to uplink transmission and downlink transmission, respectively.

Example one, downstream transmission

1) And the IAB-donor receives the data packet from the upper layer and constructs a downlink BAP PDU. And adding the residual transmission hop number of the DRB in the BAP header, sending the residual transmission hop number to the next-hop IAB node, and entering 2). The residual transmission hop count of the current DRB is the total hop count of the DRB completing end-to-end transmission from the IAB-donor to the target IAB node.

2) The IAB node receives the BAP PDU from a previous-hop IAB node or an IAB-donor.

There are two cases:

a. if the destination address in the BAP header is not the current IAB node, enter 3).

b. If the destination address in the BAP header is the current IAB node, deleting the BAP header, submitting the SDU to an upper layer and finishing the transmission of the data packet. (in this case, the packet may be for both the IAB node and the terminal connected under the IAB node).

3) The IAB node needs to continue sending the received BAP PDU to the next-hop IAB node.

When the IAB node needs to send the received BAP PDU to the next-hop IAB node, the remaining transmission hop count in the BAP header is decremented by 1 (if the destination address in the BAP header is not the current IAB node and the remaining hop count is 1 or 0, 1 is not decremented any more, so as to avoid the situation that the remaining transmission hop count is negative), and then the IAB node is sent to the next-hop IAB node, and the step enters 2).

Example two, uplink Transmission

1) The access IAB node receives uplink data from the terminal.

The IAB node firstly encapsulates the received uplink data from the terminal into an F1 data packet and delivers the data packet to a BAP layer, when the BAP layer of the IAB node receives the data packet from the upper layer, the BAP layer builds a BAP PDU, adds the residual transmission hop count of the DRB in the BAP packet header, and sends the BAP packet header to the next hop IAB node for accessing 2). The residual transmission hop count of the current DRB is the total hop count of the DRB completing end-to-end transmission from the current IAB node to the IAB-donor.

2) The IAB node receives the BAP PDU from the previous hop IAB node.

When receiving the BAP PDU sent by the previous hop IAB node, the IAB node needs to continuously send data to the next hop IAB node. At this time, the remaining transmission hop count in the BAP header is decremented by 1 (if the destination address in the BAP header is found not to be the current IAB node and the remaining hop count is 1 or 0, the 1 is not decremented any more, so as to avoid the situation that the remaining transmission hop count is negative), and then the transmission is sent to the next-hop IAB node or IAB-donor. Repeat 2) if the next hop is an IAB node; if the next hop is IAB-donor, enter 3).

3) The IAB-donor receives data from the previous hop IAB node.

When receiving BAP PDU sent by the previous hop of IAB node, the IAB-donor deletes the BAP header and delivers the SDU to the upper layer to complete the transmission of the data packet.

As shown in fig. 4, an embodiment of the present invention further provides a data processing apparatus for integrated access to backhaul IAB node, which is applied to a first IAB node, and includes:

a sending unit 401, configured to send an adaptive backhaul protocol BAP protocol data unit PDU; the BAP packet header of the BAP PDU comprises the residual transmission hop count;

As an optional embodiment, in case the first IAB node is an IAB donor node, the apparatus further comprises:

a first data receiving unit, configured to receive a downlink data packet sent by an upper layer;

a first establishing unit, configured to establish a BAP PDU according to the downlink data packet; the BAP packet header of the BAP PDU comprises the residual transmission hop count; the remaining transmission hop count is used for indicating the total hop count of the current DRB from the IAB host node to the target node.

As an optional embodiment, in case that the first IAB node is an access IAB node of a terminal, the apparatus further comprises:

a second data receiving unit, configured to receive an uplink data packet sent by the terminal;

the second building unit is used for building the BAP PDU according to the uplink data packet; the BAP packet header of the BAP PDU comprises the residual transmission hop count; the remaining transmission hop count is used for indicating the total hop count of the current DRB from the access IAB node to the IAB host node.

As an optional embodiment, in a case that the first IAB node has an uplink data transmission requirement by itself, the apparatus further includes:

the third establishing unit is used for establishing a BAP PDU according to the uplink data to be transmitted; the BAP packet header of the BAP PDU comprises the residual transmission hop count; the remaining transmission hop count is used to indicate a total hop count of the current DRB from the first IAB node to the IAB donor node.

In the IAB network provided in the embodiment of the present invention, the remaining transmission hops that the DRB still needs to experience from the current IAB node to the target node are added in the BAP header, so that the remaining transmission hops of different DRBs can be considered when the IAB network is scheduled, thereby reducing the network transmission delay.

As shown in fig. 5, an embodiment of the present invention further provides a data processing apparatus for integrated access to backhaul IAB node, which is applied to a second IAB node, and includes:

a receiving unit 501, configured to receive a BAP PDU sent by a first IAB node; the BAP packet head of the BAP PDU comprises the residual transmission hop count;

As an optional embodiment, the BAP header of the BAP PDU further includes: a destination address; the device further comprises:

and the first processing unit is used for deleting the BAP header and then submitting the BAP service data unit SDU to an upper layer if the destination address in the BAP header of the received BAP PDU is the address of the second IAB node.

a second processing unit, configured to send a BAP PDU to a next-hop IAB node if a destination address in a BAP header of the received BAP PDU is not an address of the second IAB node; wherein, the remaining transmission hop count in the BAP packet header of the BAP PDU is the remaining transmission hop count in the BAP packet header of the received BAP PDU minus 1.

a third processing unit, configured to send a BAP PDU to the next-hop IAB node if a destination address in a BAP header of the received BAP PDU is not the address of the second IAB node and a remaining transmission hop count in the BAP header of the received BAP PDU is equal to 0 or 1; and the residual transmission hop count in the BAP packet header of the BAP PDU is the same as the residual transmission hop count in the BAP packet header of the received BAP PDU.

As an optional embodiment, a value of the remaining transmission hop count included in the BAP header is a non-negative number.

It should be further noted that, in the embodiment of the present application, the division of the unit is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

As shown in fig. 6, an embodiment of the present invention further provides an IAB node, which is a first IAB node, and includes a memory 620, a transceiver 610, and a processor 600;

a memory 620 for storing a computer program; a transceiver 610 for transceiving data under the control of the processor; a processor 600 for reading the computer program in the memory and performing the following operations:

As an alternative embodiment, the processor 600 is further configured to read the computer program in the memory and perform the following operations:

Where in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 600 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 610 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.

The processor 600 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

It should be noted that, the IAB node provided in the present invention is an IAB node capable of executing the above method, and all embodiments of the above method are applicable to the IAB node and all can achieve the same or similar beneficial effects.

As shown in fig. 7, an embodiment of the present invention further provides an IAB node, which is a second IAB node, and includes a memory 720, a transceiver 710, and a processor 700;

a memory 720 for storing a computer program; a transceiver 710 for transceiving data under the control of the processor; a processor 700 for reading the computer program in the memory and performing the following operations:

As an optional embodiment, the BAP header of the BAP PDU further includes: a destination address;

the processor 700 is further configured to read the computer program in the memory and perform the following operations:

Wherein in fig. 7 the bus architecture may comprise any number of interconnected buses and bridges, with one or more processors, represented by processor 700, and various circuits, represented by memory 720, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 710 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.

The processor 700 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A data processing method for an integrated access backhaul, IAB, node, performed by a first IAB node, the method comprising:

2. The method of claim 1, wherein before the sending an adaptive backhaul protocol, BAP, protocol data unit, PDU, if the first IAB node is an IAB donor node, the method further comprises:

receiving a downlink data packet sent by an upper layer;

3. The method of claim 1, wherein before the sending an adaptive backhaul protocol, BAP, protocol data unit, PDU, in the case that the first IAB node is an access IAB node for a terminal, the method further comprises:

receiving an uplink data packet sent by a terminal;

4. The method of claim 1, wherein before the sending an adaptive backhaul protocol, BAP, protocol data unit, PDU, in case the first IAB node has an uplink data transmission need of its own, the method further comprises:

building a BAP PDU according to the uplink data to be transmitted; the BAP packet header of the BAP PDU comprises the residual transmission hop count; the remaining transmission hop count is used to indicate a total hop count of the current DRB from the first IAB node to the IAB donor node.

5. A data processing method for an integrated access backhaul, IAB, node, performed by a second IAB node, the method comprising:

6. The method of claim 5, wherein the BAP header of the BAP PDU further comprises: a destination address;

7. The method of claim 5, wherein the BAP header of the BAP PDU further comprises: a destination address;

8. The method of claim 5, wherein the BAP header of the BAP PDU further comprises: a destination address;

9. The method according to any of claims 5 to 8, wherein the remaining transmission hops comprised in the BAP header are non-negative.

10. A data processing apparatus for an integrated access backhaul IAB node, applied to a first IAB node, comprising:

11. An IAB node, the IAB node being a first IAB node comprising a memory, a transceiver, a processor;

12. The IAB node of claim 11, wherein the processor is further configured to read the computer program in the memory and perform the following operations:

13. The IAB node of claim 11, wherein the processor is further configured to read the computer program in the memory and perform the following operations:

14. The IAB node of claim 11, wherein the processor is further configured to read the computer program in the memory and perform the following operations:

15. A data processing apparatus for an integrated access backhaul IAB node, applied to a second IAB node, comprising:

16. An IAB node, the IAB node being a second IAB node, comprising a memory, a transceiver, a processor;

17. The IAB node of claim 16, wherein a BAP header of the BAP PDU further comprises: a destination address;

the processor is further configured to read the computer program in the memory and perform the following:

18. The IAB node of claim 16, wherein a BAP header of the BAP PDU further comprises: a destination address;

19. The IAB node of claim 16, wherein a BAP header of the BAP PDU further comprises: a destination address;

20. The IAB node of any of claims 16 to 19, wherein a remaining number of transmission hops included in the BAP header takes a non-negative value.

21. A processor-readable storage medium, wherein the processor-readable storage medium stores a computer program for causing a processor to execute the method of any one of claims 1 to 4; alternatively, the computer program is for causing the processor to perform the method of any of claims 5 to 9.