CN115314952A

CN115314952A - IAB node information processing method and device and IAB node

Info

Publication number: CN115314952A
Application number: CN202110494535.9A
Authority: CN
Inventors: 张明珠; 彦楠
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2022-11-08

Abstract

The invention provides an IAB node information processing method and device and an IAB node. The method comprises the following steps: the IAB node stores the IAB related information under the condition that a first condition is met; the IAB node sends IAB related information to an IAB host node; the first condition includes: one of an IAB node RLF, an IAB node HOF, an IAB node CEF, an IAB node connection recovery failure, and an IAB node random access success. In an IAB scene, when connection failure, connection recovery failure, handover failure, radio link failure or random access success of an IAB node occurs, the IAB related information is stored and reported to an IAB host node, so that the IAB host node performs network topology optimization according to the IAB related information, mobility robustness is enhanced, conditions of RLF, HOF, CEF or connection recovery failure of the IAB node and the like are avoided, and network performance is improved.

Description

IAB node information processing method and device and IAB node

Technical Field

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

Background

An Integrated Access and Backhaul (IAB) is an important research scenario of a mobile communication system, and is characterized in that wireless Backhaul links between IAB nodes, that is, backhaul links between IAB nodes and Access links between User Equipment (UE) and the IAB nodes are transmitted by using wireless links. In an IAB scenario, an IAB node may have Radio Link Failure (RLF), handover Failure (HOF), or Connection Establishment Failure (CEF), and thus has poor network performance.

Disclosure of Invention

The invention aims to provide an IAB node information processing method and device and an IAB node, which are used for solving the problem of poor network performance in an IAB scene.

An embodiment of the present invention provides a method for processing IAB node information, including:

the integrated access and return IAB node stores IAB related information under the condition that a first condition is met;

the IAB node sends the IAB related information to an IAB host node;

wherein the first condition comprises: one of an IAB node radio link failure RLF, an IAB node handover failure HOF, an IAB node connection establishment failure CEF, an IAB node connection recovery failure, and an IAB node random access success.

Optionally, the IAB-related information comprises at least one of:

routing information;

a Backhaul Adaptation Protocol (BAP) address;

path information;

an Internet Protocol (IP) address;

a flow control feedback type;

IAB indication information.

Optionally, in a case that the first condition includes the IAB node handover failure HOF, the IAB-related information includes: the information related to the IAB node before handover, and/or the configuration information related to the IAB node handover.

Optionally, the routing information comprises at least one of:

BAP route ID;

backhaul (BH) Radio Link Control (RLC) channel ID.

Optionally, the path information comprises at least one of:

a target IAB node ID;

IAB host node ID;

BAP Path ID.

Optionally, the IP address comprises at least one of:

an iPV4 address;

an iPV6 address;

an iPv6 prefix.

Optionally, the flow control feedback type comprises at least one of:

a first type of flow control feedback based on each BH RLC channel;

a second type of flow control feedback based on each BAP route ID.

Optionally, the IAB indication information is used to indicate:

whether the IAB node sends RLF indication information to a child node of the IAB node or not; and/or

And whether the IAB node receives the indication information of the RLF recovery failure sent by the IAB parent node or not is judged.

Optionally, the sending the IAB-related information to the IAB host node includes one of:

under the condition of receiving a request message sent by an IAB host node, sending the IAB related information to the IAB host node;

sending the IAB related information to an IAB host node at a first interval;

and sending the IAB related information to an IAB host node under the condition that the target event is met.

Optionally, before sending the IAB-related information to the IAB host node, the method further comprises:

and sending an IAB related information valid indication to the IAB host node.

the IAB host node receives the IAB related information sent by the IAB node;

the IAB host node performs network topology optimization processing according to the IAB related information;

wherein the IAB related information is information stored by the IAB node under the condition that a first condition is met; the first condition includes: one of an IAB node Radio Link Failure (RLF), an IAB node handover failure (HOF), an IAB node Connection Establishment Failure (CEF), an IAB node connection recovery failure, and an IAB node random access success.

Optionally, the IAB-related information comprises at least one of:

routing information;

returning an adaptive protocol layer BAP address;

path information;

an internet protocol, IP, address;

a flow control feedback type;

IAB indication information.

Optionally, the routing information comprises at least one of:

BAP route ID;

the radio link control BH RLC channel ID is returned.

Optionally, the path information comprises at least one of:

a target IAB node ID;

IAB host node ID;

BAP Path ID.

Optionally, the IP address comprises at least one of:

an iPV4 address;

an iPV6 address;

iPv6 prefix.

Optionally, the flow control feedback type comprises at least one of:

a first type of flow control feedback based on each BH RLC channel;

a second type of flow control feedback based on each BAP route ID.

Optionally, the IAB indication information is used to indicate:

Optionally, before receiving IAB-related information, the method further comprises:

and sending a request message for requesting to report the IAB related information to the IAB node.

Optionally, before sending a request message requesting reporting of the IAB related information to the IAB node, the method further includes:

and receiving an IAB related information valid indication sent by the IAB node.

An embodiment of the present invention provides an IAB node, including: memory, transceiver, 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:

storing the IAB related information under the condition that a first condition is met;

the transceiver is configured to: sending the IAB related information to an IAB host node;

Optionally, the IAB-related information comprises at least one of:

routing information;

returning an adaptive protocol layer BAP address;

path information;

an internet protocol, IP, address;

a flow control feedback type;

IAB indication information.

Optionally, the routing information comprises at least one of:

BAP route ID;

the radio link control BH RLC channel ID is returned.

Optionally, the path information comprises at least one of:

a target IAB node ID;

IAB host node ID;

BAP Path ID.

Optionally, the IP address comprises at least one of:

an iPV4 address;

an iPV6 address;

iPv6 prefix.

Optionally, the flow control feedback type comprises at least one of:

a first type of flow control feedback based on each BH RLC channel;

a second type of flow control feedback based on each BAP route ID.

Optionally, the IAB indication information is used to indicate:

And whether the IAB node receives the RLF recovery failure indication information sent by the IAB parent node or not.

Optionally, the transceiver sends the IAB-related information to an IAB host node, including one of:

sending the IAB related information to an IAB host node at a first interval;

Optionally, before sending the IAB-hosting node the IAB-related information, the transceiver is further configured to:

and sending an IAB related information valid indication to the IAB host node.

An embodiment of the present invention provides an IAB host node, including: memory, transceiver, processor:

a memory for storing a computer program; a transceiver to perform the following under control of the processor:

receiving IAB related information sent by an IAB node;

the processor is used for reading the computer program in the memory and executing the following operations:

performing network topology optimization processing according to the IAB related information;

wherein the IAB related information is information stored by the IAB node under the condition that a first condition is met; the first condition includes: one of an IAB node radio link failure RLF, an IAB node handover failure HOF, an IAB node connection establishment failure CEF, an IAB node connection recovery failure, and an IAB node random access success.

Optionally, the IAB-related information comprises at least one of:

routing information;

returning an adaptive protocol layer BAP address;

path information;

an internet protocol, IP, address;

a flow control feedback type;

IAB indication information.

Optionally, the routing information comprises at least one of:

BAP route ID;

the radio link control BH RLC channel ID is returned.

Optionally, the path information comprises at least one of:

a target IAB node ID;

IAB host node ID;

BAP Path ID.

Optionally, the IP address comprises at least one of:

an iPV4 address;

an iPV6 address;

iPv6 prefix.

Optionally, the flow control feedback type comprises at least one of:

a first type of flow control feedback based on each BH RLC channel;

a second type of flow control feedback based on each BAP route ID.

Optionally, the IAB indication information is used to indicate:

Optionally, the transceiver is further configured to, before receiving the IAB-related information, perform the following operations:

Optionally, before sending a request message requesting reporting of the IAB related information to the IAB node, the transceiver is further configured to:

and receiving an IAB related information valid indication sent by the IAB node.

An embodiment of the present invention provides an apparatus for processing IAB node information, including:

a storage unit configured to store IAB-related information in a case where a first condition is satisfied;

a first sending unit, configured to send the IAB-related information to an IAB host node;

a first receiving unit, configured to receive IAB related information sent by an IAB node;

the processing unit is used for carrying out network topology optimization processing according to the IAB related information;

the IAB related information is information stored by the IAB node under the condition that a first condition is met; the first condition includes: one of an IAB node radio link failure RLF, an IAB node handover failure HOF, an IAB node connection establishment failure CEF, an IAB node connection recovery failure, and an IAB node random access success.

An embodiment of the present invention provides a processor-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the above-mentioned method for processing IAB node information.

The technical scheme of the invention has the beneficial effects that:

in the embodiment of the invention, under an IAB scene, when connection failure, connection recovery failure, handover failure, radio link failure or random access success of an IAB occurs in the IAB, IAB related information is stored and reported to an IAB host node, so that the IAB host node performs network topology optimization processing according to the IAB related information, mobility robustness is enhanced, RLF, HOF, CEF or connection recovery failure of the IAB node is avoided, and network performance is improved.

Drawings

FIGS. 1 a-1 b show a schematic view of an IAB network architecture;

FIG. 2 is a schematic diagram illustrating the connection relationship between a child node and a parent node of an IAB node;

fig. 3 is a flowchart illustrating a method for processing IAB node information according to an embodiment of the present invention;

fig. 4 is a second flowchart illustrating a method for processing IAB node information according to an embodiment of the present invention;

fig. 5 is a third flowchart illustrating a method for processing IAB node information according to an embodiment of the present invention;

fig. 6 is a fourth flowchart illustrating a method for processing IAB node information according to an embodiment of the present invention;

fig. 7 is a fifth flowchart illustrating a method for processing IAB node information according to an embodiment of the present invention;

fig. 8 is a sixth schematic flowchart illustrating a method for processing IAB node information according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an apparatus for processing IAB node information according to an embodiment of the present invention;

fig. 10 is a second schematic structural diagram of an apparatus for processing IAB node information according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of an IAB node according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of an IAB host 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. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. It will therefore be apparent to those skilled in the art that various changes and modifications can be made in the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

In the embodiment of the present invention, the term "and/or" describes an association relationship of an associated object, and indicates that three relationships may exist, for example, a and/or B, and 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 some embodiments of the present application, and not all 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.

In making the description of the embodiments of the present invention, some concepts used in the following description will be explained first.

The IAB network architecture is shown in fig. 1a and 1b, where fig. 1a is a schematic diagram of an interaction relationship between an Access and Mobility Management entity (AMF)/a User Plane Function (UPF), a gNB, an IAB host node (IAB-node), and an IAB node (IAB-node); FIG. 1b is a schematic diagram of an interaction relationship between a Mobility Management Entity (MME)/S-PGW (PDN GateWay), a gNB, a MeNB, an IAB-donor, and an IAB-node.

The IAB node may support a Radio relay of a Radio Access Network (NG-RAN), and the relay node (IAB node) supports Access and backhaul through a New Radio (NR). The terminal node of the network side NR backhaul is IAB-donor, and the backhaul can go through one hop or multiple hops.

The Child nodes (Child nodes) and Parent nodes (Parent nodes) of the IAB node are shown in FIG. 2.

The IAB-node is connected to the IAB-node in a one-hop or multi-hop mode to form a Directed Acyclic Graph (DAG). The IAB-node is divided into two parts, namely an IAB Mobile Termination (IAB-MT) and an IAB Distributed Unit (IAB-DU), and is connected with a parent node thereof through the IAB-MT and connected with a child node thereof through the IAB-DU.

When RLF occurs at the parent node and RLF recovery fails, a recovery failure indication is sent to its child nodes.

RLF：

Radio link failure in NR systems may be due to several reasons:

a) The T310 timer times out;

b) T312 timer times out;

c) Reporting a random Access problem (including a beam failure recovery failure and a random Access problem) by Media Access Control (MAC) under a certain condition;

d) Under a certain condition, radio Link Control (RLC) reports that the maximum retransmission times are reached for a Signaling Radio Bearer (SRB) or a Data Radio Bearer (DRB);

e) Continuous Listen Before Talk (Listen Before Talk, LBT) fails under certain conditions;

f) For IAB-MT, a backhaul RLF indication received from its parent node, etc.

When the IAB node generates RLF, the IAB-MT and the UE act in the same way.

CEF：

For NR systems, the UE stores any failed connection establishment attempts, recording content when Radio Resource Control (RRC) setup (setup) or RRC recovery (resume) fails. The UE stores the failed RRC connection setup without the network side performing configuration in advance. The UE stores the related RRC connection establishment failure or RRC recovery failure on the selected Public Land Mobile Network (PLMN).

Specifically, embodiments of the present invention provide an IAB node information processing method and apparatus, and an IAB node, so as to solve the problem of poor network performance in an IAB scenario.

As shown in fig. 3, an embodiment of the present invention provides an IAB node information processing method, which is applied to an IAB node, and specifically includes the following steps:

step 31: the integrated access and backhaul IAB node stores IAB related information if a first condition is satisfied. Wherein the first condition comprises: one of an IAB node radio link failure RLF, an IAB node handover failure HOF, an IAB node connection establishment failure CEF, an IAB node connection recovery failure, and an IAB node random access success.

Step 32: and the IAB node sends the IAB related information to the IAB host node.

In the embodiment of the invention, in an IAB scene, when RLF, HOF, CEF and connection recovery failure occur or random access of an IAB node succeeds, the IAB node stores IAB related information and reports the IAB related information to an IAB host node so that the IAB host node performs network topology optimization processing according to the IAB related information, thereby enhancing the mobile robustness and avoiding the RLF, HOF, CEF or connection recovery failure of the IAB node. For example: and the IAB host node determines that the first parameter in the configuration information of the IAB node causes the above condition according to the IAB related information, and then can adjust the value of the first parameter.

Taking the RLF of the IAB node as an example, if the RLF of the IAB node may occur due to unreasonable configuration information, when the RLF occurs, the IAB node stores the current IAB related information and reports the IAB related information to an IAB host node, and the IAB host node may adjust the configuration information configured by the IAB node according to the IAB related information, thereby avoiding the RLF and improving the network performance.

Specifically, the IAB-related information may include at least one of the following a to F:

(A) Routing information.

Specifically, the routing information is default routing information, and the routing information may include at least one of the following:

a BAP routing (routing) ID refers to a BAP routing ID of the IAB node itself, and the BAP routing ID may include: BAP path ID + BAP address of destination (last hop IAB node).

BH RLC Channel (Channel) ID.

(B) And transmitting back the adaptive protocol layer BAP address.

(C) And (4) path information. The path information may be information of a path in which RLF, CEF or connection recovery fails at the IAB node; pre-handover and/or path information to be handed over for the handover failure HOF may also occur for the IAB node.

Specifically, the path information may include at least one of:

i) A target IAB node ID; wherein the target IAB node may comprise: one or more of an IAB node of a previous hop of the IAB node, an IAB node of a next hop of the IAB node, and a last IAB node of a path where the IAB node is located. For example: the target IAB node ID may refer to the BAP address of the last IAB node that the packet should reach.

ii) IAB hosting node IDs, such as: BAP address of IAB host node;

iii) The BAP path (path) ID, which may refer to a path ID for routing the packet to a destination IAB node (the BAP path ID indexes the routing path the packet egress follow to this destination), may include all IAB nodes on a routing path.

(D) An internet protocol IP address.

Specifically, the IP address may include at least one of:

an iPV4 Address (iPV 4-Address);

an iPV6 Address (iPV 6-Address);

iPV6 Prefix (iPV 6-Prefix).

(E) Flow control feedback type.

Specifically, the flow control feedback type may include at least one of:

the first type of flow control feedback is carried out based on each BH RLC channel, namely, the IAB node carries out flow control feedback based on each BH RLC channel;

the second type of flow control feedback based on each BAP route ID, i.e. the IAB node performs flow control feedback based on each BAP route ID.

(F) IAB indication information.

Specifically, the IAB indication information may be used to indicate:

As an optional embodiment, in a case that the first condition includes the IAB node handover failure HOF, the IAB-related information includes: the information related to the IAB node before handover, and/or the configuration information related to the IAB node handover. Taking the handover failure of the first IAB node as an example, the first IAB node stores and reports: the first IAB node is configured to switch to a second IAB node; or, the first IAB node switches the relevant configuration information; or, the two information contents are stored and transmitted simultaneously. Wherein the configuration information related to IAB node handover may include: the information related to the IAB node before handover (such as routing information, path information, IP address, etc.), and the information related to the information after handover (such as path information to be handed over, BAP address of the IAB node to be handed over, IP address after handover, etc.).

Wherein the related information before the handover of the first IAB node may include at least one of the following:

routing information before switching of the first IAB node;

the BAP address of the first IAB node before switching;

path information before switching;

an IP address before switching;

a flow control feedback type before switching;

IAB indication information.

Wherein the information related to the handover of the first IAB node may include at least one of the following:

routing information switched by the first IAB node;

BAP address of the switched IAB node;

the switched path information;

the IP address after switching;

the flow control feedback type after switching;

IAB indication information.

(1) And under the condition of receiving a request message sent by an IAB host node, sending the IAB related information to the IAB host node. In this embodiment, the IAB host node may send a request message to the IAB node, and the IAB node reports the IAB-related information to the IAB host node after receiving the request message.

(2) And sending the IAB related information to the IAB host node at the first time interval. In this embodiment, after storing the IAB related information, the IAB node sends the IAB related information to the IAB donor node in a predetermined period, where the first time at an interval in the predetermined period may be set according to requirements of the IAB node for RLF, HOF, CEF, or failure of connection recovery, network quality, and the like.

(3) And sending the IAB related information to an IAB host node under the condition that the target event is met. In this embodiment, the target event may be an information reporting trigger condition configured by the network side device for the IAB node, where the IAB node stores the IAB related information when the RLF, the HOF, the CEF, or the connection recovery fails, and if the target event is satisfied, reports the IAB related information.

Wherein the target event may be: the network side is accessed again successfully, namely the IAB node is immediately reported after being accessed again to the network side successfully; the target event may also be a time based on an A2 event, such as a serving cell measurement value below an absolute threshold.

Optionally, before sending the IAB-related information to the IAB host node, the method further comprises: and sending an IAB related information valid indication to the IAB host node.

The IAB-related information valid indication is used to notify the IAB donor that the IAB node has stored IAB-related information. The IAB related information valid indication may be: a connection establishment failure report valid indication, a radio link failure report valid indication, a random access report valid indication, and the like.

The following describes a specific implementation process of the method for processing IAB node information by an embodiment.

For example, as shown in fig. 4, it is taken as an example that the IAB node stores and reports the IAB related information when a CEF occurs in connection establishment failure or a failure in connection recovery occurs.

(1) The IAB node sends RRC Setup Request/RRC Resume Request1 (RRC setting Request/RRC recovery Request 1), requests connection establishment or connection recovery establishment and starts a T300 or T319 timer (the T300 timer corresponds to the RRC Setup Request, and the T319 timer corresponds to the RRC Resume Request at regular time);

(2) If the T300 or T319 is overtime and the IAB node does not receive the network message (response message for connection establishment/connection recovery), it determines that the connection establishment fails or the connection recovery fails;

(3) The IAB node detects that the connection establishment fails or the connection recovery fails, and stores IAB related information into a connection establishment failure report, wherein the IAB related information can comprise default routing information, BAP addresses, target path information, IP addresses, flow control feedback types, IAB indication information and the like;

(4) The IAB node reports a connection establishment failure report effective indication to the IAB donor in an RRC Setup Complete/RRC Reconfiguration Complete/RRC Resume Complete message, and is used for notifying the IAB donor that the IAB node has stored the IAB related information;

(5) After receiving the effective indication of the connection establishment failure report, the IAB donor can send a request message to the IAB node to request to report the connection establishment failure report;

(6) The IAB node may report a connection establishment failure report in a UE Information Response (UE Information Response) message when receiving a request message that an IAB donor requests to report a connection establishment failure report, where the connection establishment failure report includes the IAB-related Information stored by the IAB node.

The IAB donor can optimize the IAB topological structure configuration according to the content of the connection establishment failure report, so that the mobile robustness is enhanced, the situations of connection establishment failure CEF, connection recovery failure and the like are avoided, and the network quality in an IAB scene is improved.

Example two, as shown in fig. 5, take storing and reporting IAB related information when an ho fails to handover an IAB node in a Centralized Unit (CU) as an example.

(1) The IAB node receives the synchronous reconfiguration message of the IAB node A, switches to the target IAB node B and starts a T304 timer;

(2) If the T304 timer is overtime and the IAB node is not successfully accessed to the target IAB node B, the switching is failed;

(3) When detecting the switching failure, the IAB node stores the IAB related information into a radio link failure report; the IAB related information may include related information before switching of the IAB node, and/or configuration information related to switching of the IAB node, and specifically may include default routing information, a BAP address, target path information, an IP address, a flow control feedback type, IAB indication information, and the like;

(4) The IAB node can report the effective indication of the radio link failure report to the IAB node in an RRC Setup Complete/RRC Reconfiguration Complete/RRC Reestablishment Complete message;

(5) After receiving the radio link failure report valid indication, the IAB donor may send a request message to the IAB node to request the IAB node to report a radio link failure report.

(6) The IAB node may report a radio link failure report in a UE Information Response message when receiving a request message requesting a radio link failure report sent by an IAB donor, where the radio link failure report includes IAB-related Information stored by the IAB node.

The IAB donor can optimize the IAB topological structure and the switching configuration according to the content of the radio link failure report subsequently, thereby enhancing the mobile robustness, avoiding the occurrence of switching failure of the IAB node and further improving the network quality in an IAB scene.

Example three, as shown in fig. 6, the case where the IAB node stores and reports the IAB related information when the RLF occurs is taken as an example.

(1) The IAB node detects the continuous bottom layer out-of-step problem, and then starts a T310 timer;

(2) If the T310 timer is overtime, the IAB node detects the radio link failure;

(3) When detecting a radio link failure, the IAB node stores IAB related information into a radio link failure report, where the IAB related information may include default routing information, a BAP address, target path information, an IP address, a flow control feedback type, IAB indication information, and the like;

(4) The IAB node reports a radio link failure report effective indication to the IAB node in an RRC Setup Complete/RRC Reconfiguration Complete/RRC Reestablishment Complete message;

(6) And the IAB node reports a radio link failure report in a UE Information Response message after receiving a request message for requesting the radio link failure report, wherein the request message is sent by the IAB donor, and the radio link failure report comprises IAB related Information stored by the IAB node.

The IAB donor can optimize the IAB topological structure configuration according to the content of the radio link failure report, thereby enhancing the mobile robustness, avoiding the occurrence of RLF and improving the network quality under the IAB scene.

Example four, as shown in fig. 7, the case that the IAB node stores and reports the IAB related information when the random access is successful is taken as an example.

(1) The IAB node sends MSG1 (message 1) to the IAB donor for random access;

(2) The IAB node receives an IAB donor and sends MSG2 (message 2), and receives an uplink permission in the MSG 2;

(3) The IAB node sends MSG3 (message 3) through the uplink permission received in MSG 2;

(4) The IAB node receives the MSG4 (message 4) sent by the IAB donor, and the random access is successful;

(5) The IAB node stores IAB related information into the random access report, where the IAB related information may include default routing information, BAP address, target path information, IP address, flow control feedback type, IAB indication information, and the like.

(6) And the IAB node reports the effective indication of the random access report to the IAB node in an RRC Setup Complete/RRC Reconfiguration Complete/RRC request Complete message.

(7) And after receiving the effective indication of the random access report, the IAB donor can send a request message to the IAB node to request the IAB node to report the random access report.

(8) And the IAB node reports a random access report in a UE Information Response message after receiving a request message for requesting random access sent by the IAB donor, wherein the random access report comprises IAB related Information stored by the IAB node.

The IAB donor can optimize the IAB topological structure configuration according to the content of the random access report subsequently, so that the mobile robustness is enhanced, and the network quality in an IAB scene is improved.

In the embodiment of the invention, under an IAB scene, when the IAB node has connection failure, connection recovery failure, handover failure, radio link failure or the random access of the IAB node is successful, IAB related information is stored and reported to an IAB host node, so that the IAB host node performs network topology optimization processing according to the IAB related information, the mobility robustness is enhanced, the situations that the IAB node generates RLF, HOF, CEF or connection recovery failure and the like are avoided, and the network performance is improved.

As shown in fig. 8, an embodiment of the present invention provides an IAB node information processing method, which is applied to an IAB host node, and specifically includes the following steps:

step 81: the IAB host node receives the IAB related information sent by the IAB node.

Step 82: and the IAB host node performs network topology optimization processing according to the IAB related information.

In the embodiment of the invention, in an IAB scene, when RLF, HOF, CEF and connection recovery failure occur or random access of an IAB node is successful, the IAB node stores IAB related information and reports the IAB related information to an IAB host node. The IAB host node can perform network topology optimization processing according to the IAB related information, thereby enhancing the mobile robustness and avoiding the occurrence of RLF, HOF, CEF or connection recovery failure and the like.

Specifically, the IAB host node performs network topology optimization processing according to the IAB related information, which may include: and adjusting the configuration information configured for the IAB node according to the IAB related information. For example: and the IAB host node determines that the first parameter in the configuration information of the IAB node causes the above situation according to the IAB related information, and then the numerical value of the first parameter can be adjusted.

Taking the generation of RLF by the IAB node as an example: if the RLF occurs in the IAB node due to unreasonable configuration information, the IAB node stores the current IAB related information and reports the IAB related information to the IAB host node when the RLF occurs, and the IAB host node may search and determine a parameter or a candidate parameter that causes the RLF according to the IAB related information, and adjust the parameter or the candidate parameter, thereby avoiding the RLF.

According to the embodiment of the invention, under an IAB scene, when the IAB node has connection failure, connection recovery failure, handover failure, radio link failure or the random access of the IAB node is successful, the IAB related information is stored and reported to an IAB host node, and the IAB host node performs network topology optimization processing according to the IAB related information, so that the mobile robustness can be enhanced, the situations that the IAB node has RLF, HOF, CEF or connection recovery failure and the like are avoided, and the network performance is improved.

Specifically, the IAB-related information may include at least one of:

(A) The method comprises the following steps Routing information; the routing information is default routing information, and specifically, the routing information includes at least one of the following:

the BAP route ID refers to a BAP route ID of the IAB node itself, and the BAP route ID may include: BAP path ID + BAP address of destination (last hop IAB node);

BH RLC Channel ID。

(B) The method comprises the following steps Returning an adaptive protocol layer BAP address;

(C) The method comprises the following steps Path information; the path information may be information of a path in which RLF, CEF or connection recovery fails at the IAB node; pre-handover and/or path information to be handed over for the handover failure HOF may also occur for the IAB node.

Specifically, the path information may include at least one of:

a target IAB node ID; wherein the target IAB node may comprise: one or more of an IAB node of a previous hop of the IAB node, an IAB node of a next hop of the IAB node, and a last IAB node of a path where the IAB node is located. For example: the target IAB node ID may refer to the BAP address of the last IAB node that the packet should reach.

IAB host node IDs, for example: BAP address of IAB host node;

the BAP path ID may refer to a path ID for routing a packet to a destination IAB node, and may include all IAB nodes on a routing path.

(D) The method comprises the following steps An internet protocol, IP, address; specifically, the IP address may include at least one of:

an iPV4 address;

an iPV6 address;

iPv6 prefix.

(E) The method comprises the following steps A flow control feedback type;

specifically, the flow control feedback type may include at least one of:

(F) The method comprises the following steps IAB indication information. Specifically, the IAB indication information may be used to indicate:

whether the IAB node sends RLF indication information to a child node of the IAB node or not; and/or whether the IAB node receives the indication information of the RLF recovery failure sent by the IAB parent node.

As an optional embodiment, in a case that the first condition includes the IAB node handover failure HOF, the IAB-related information includes: the information related to the IAB node before handover, and/or the configuration information related to the IAB node handover. Taking the handover failure of the first IAB node as an example, the first IAB node stores and reports: the first IAB node is configured to switch to a second IAB node; or, the first IAB node switches the relevant configuration information; or, the two information contents are stored and transmitted simultaneously.

Wherein the IAB node handover-related configuration information may include: the information related to the IAB node before handover (such as routing information, path information, IP address, etc.), and the information related to the information after handover (such as path information to be handed over, BAP address of the IAB node to be handed over, IP address after handover, etc.).

For example, the related information before the handover of the first IAB node may include at least one of:

routing information before switching of the first IAB node;

the BAP address of the first IAB node before switching;

path information before switching;

an IP address before switching;

a flow control feedback type before switching;

IAB indication information.

The information related to the handover of the first IAB node may include at least one of:

routing information switched by the first IAB node;

BAP address of the switched IAB node;

the switched path information;

the IP address after switching;

the flow control feedback type after switching;

IAB indication information.

The IAB host node may send a request message requesting the IAB node to report the IAB related information to the IAB node, and the IAB node reports the IAB related information to the IAB host node after receiving the request message.

Optionally, before sending a request message requesting reporting of the IAB related information to the IAB node, the method further includes: and receiving an IAB related information valid indication sent by the IAB node. The IAB related information valid indication may be: a connection establishment failure report valid indication, a radio link failure report valid indication, a random access report valid indication, and the like.

In this embodiment, after storing the IAB related information, the IAB node may send an IAB related information valid indication to the IAB host node before sending the IAB related information to the IAB host node, so as to notify the IAB donor that the IAB node has stored the IAB related information, and then the IAB donor may send a request message requesting reporting of the IAB related information to the IAB node.

It should be noted that, the IAB node may further send the IAB related information to the IAB host node at a first time interval, and then the IAB host node may receive the IAB related information at the first time interval; alternatively, the IAB node may send the IAB-related information to the IAB host node if a target event is satisfied. Wherein the target event may be: the network side is accessed again successfully, namely the IAB node is immediately reported after being accessed again to the network side successfully; the target event may also be a time based on an A2 event, such as a serving cell measurement value below an absolute threshold.

It should be noted that, in this embodiment, for a specific implementation process of the method for processing IAB node information, reference is made to the method embodiment applied to an IAB node, which is specifically shown in fig. 4 to fig. 7 and is not described herein again.

The foregoing embodiment describes a method for processing IAB node information according to the present invention, and the following embodiment will further describe a corresponding apparatus thereof with reference to the accompanying drawings.

Specifically, as shown in fig. 9, an embodiment of the present invention provides an apparatus 900 for processing IAB node information, which is applied to an IAB node, and includes:

a storage unit 910, configured to store the IAB-related information if a first condition is satisfied;

a first sending unit 920, configured to send the IAB-related information to an IAB host node;

Optionally, the IAB-related information comprises at least one of:

routing information;

returning an adaptive protocol layer BAP address;

path information;

an internet protocol, IP, address;

a flow control feedback type;

IAB indication information.

Optionally, the routing information comprises at least one of:

BAP route ID;

the radio link control BH RLC channel ID is returned.

Optionally, the path information comprises at least one of:

a target IAB node ID;

IAB host node ID;

BAP Path ID.

Optionally, the IP address comprises at least one of:

an iPV4 address;

an iPV6 address;

an iPv6 prefix.

Optionally, the flow control feedback type comprises at least one of:

a first type of flow control feedback based on each BH RLC channel;

a second type of flow control feedback based on each BAP route ID.

Optionally, the IAB indication information is used to indicate:

Optionally, the first sending unit is configured to implement one of the following:

sending the IAB related information to an IAB host node at a first interval;

Optionally, the apparatus further comprises:

and a second sending unit, configured to send an IAB-related information valid indication to the IAB host node.

In the embodiment of the invention, under an IAB scene, when connection failure, connection recovery failure, handover failure, radio link failure or random access success of an IAB node occurs, IAB related information is stored and reported to an IAB host node, so that the IAB host node performs network topology optimization processing according to the IAB related information, mobility robustness is enhanced, RLF, HOF, CEF or connection recovery failure of the IAB node is avoided, and network performance is improved.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented in the embodiment of the method for an IAB node, and can achieve the same technical effect, and details of the same parts and beneficial effects as those in the embodiment of the method are not described herein again.

As shown in fig. 10, an apparatus 1000 for processing information of an IAB node according to an embodiment of the present invention is applied to an IAB host node, and includes:

a first receiving unit 1010, configured to receive IAB related information sent by an IAB node;

a processing unit 1020, configured to perform network topology optimization processing according to the IAB related information;

Optionally, the IAB-related information comprises at least one of:

routing information;

returning an adaptive protocol layer BAP address;

path information;

an internet protocol, IP, address;

a flow control feedback type;

IAB indication information.

Optionally, the routing information comprises at least one of:

BAP route ID;

the radio link control BH RLC channel ID is returned.

Optionally, the path information comprises at least one of:

a target IAB node ID;

IAB host node ID;

BAP Path ID.

Optionally, the IP address comprises at least one of:

an iPV4 address;

an iPV6 address;

iPv6 prefix.

Optionally, the flow control feedback type comprises at least one of:

a first type of flow control feedback based on each BH RLC channel;

a second type of flow control feedback based on each BAP route ID.

Optionally, the IAB indication information is used to indicate:

Optionally, the apparatus further comprises:

a third sending unit, configured to send a request message for requesting to report the IAB related information to the IAB node.

Optionally, the apparatus further comprises:

and the second receiving unit is used for receiving the valid indication of the IAB related information sent by the IAB node.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment applied to the IAB host node, and can achieve the same technical effect, and details of the same parts and beneficial effects as those of the method embodiment in this embodiment are not described herein again.

It should be noted that the division of the unit in the embodiment of the present application 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 may be implemented in the form of hardware, or may also be implemented in the 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.

As shown in fig. 11, an embodiment of the present invention further provides an IAB node, including: memory 1120, transceiver 1100, processor 1110; a memory 1120 for storing a computer program; a transceiver 1100 for transceiving data under the control of the processor 1110;

a processor for reading the computer program in the memory and performing the following operations:

the transceiver 1100 is configured to: sending the IAB related information to an IAB host node;

Optionally, the IAB-related information comprises at least one of:

routing information;

returning an adaptive protocol layer BAP address;

path information;

an internet protocol, IP, address;

a flow control feedback type;

IAB indication information.

Optionally, the routing information comprises at least one of:

BAP route ID;

the radio link control BH RLC channel ID is returned.

Optionally, the path information comprises at least one of:

a target IAB node ID;

IAB host node ID;

BAP Path ID.

Optionally, the IP address comprises at least one of:

an iPV4 address;

an iPV6 address;

iPv6 prefix.

Optionally, the flow control feedback type comprises at least one of:

a first type of flow control feedback based on each BH RLC channel;

a second type of flow control feedback based on each BAP route ID.

Optionally, the IAB indication information is used to indicate:

sending the IAB related information to an IAB host node at a first interval;

and sending an IAB related information valid indication to the IAB host node.

It should be noted that in FIG. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1110, and various circuits, represented by memory 1120, 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 1100 may be a plurality of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. For different terminals, the user interface 1130 may also be an interface to externally connect desired devices including, but not limited to, a keypad, display, speaker, microphone, joystick, etc. The processor 1110 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1110 in performing operations.

Alternatively, the processor 1110 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and may also adopt a multi-core architecture.

The processor is used for executing any one of the methods provided by the embodiment of the application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

It should be noted that, the IAB node provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment applied to the IAB node, and can achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are not repeated herein.

As shown in fig. 12, an embodiment of the present invention further provides an IAB host node, including: memory 1220, transceiver 1200, processor 1210; a memory 1220 for storing a computer program; a transceiver 1200 configured to perform the following operations under the control of the processor 1210:

receiving IAB related information sent by an IAB node;

a processor 1210 for reading the computer program in the memory and performing the following operations:

Optionally, the IAB-related information comprises at least one of:

routing information;

returning an adaptive protocol layer BAP address;

path information;

an internet protocol, IP, address;

a flow control feedback type;

IAB indication information.

Optionally, the routing information comprises at least one of:

BAP route ID;

the radio link control BH RLC channel ID is returned.

Optionally, the path information comprises at least one of:

a target IAB node ID;

IAB host node ID;

BAP Path ID.

Optionally, the IP address comprises at least one of:

an iPV4 address;

an iPV6 address;

iPv6 prefix.

Optionally, the flow control feedback type comprises at least one of:

a first type of flow control feedback based on each BH RLC channel;

a second type of flow control feedback based on each BAP route ID.

Optionally, the IAB indication information is used to indicate:

and receiving an IAB related information valid indication sent by the IAB node.

Wherein in fig. 12, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1210, and various circuits, represented by memory 1220, 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 1200 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 1210 is responsible for managing the bus architecture and general processing, and the memory 1220 may store data used by the processor 1200 in performing operations.

The processor 1210 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 host node provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment applied to the IAB host node, and can achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are not repeated herein.

In addition, the specific embodiment of the present invention further provides a processor-readable storage medium, on which a computer program is stored, where the program, when executed by a processor, implements the steps of the method for processing IAB node information as described above. And the same technical effect can be achieved, and in order to avoid repetition, the description is omitted. The 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 disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical memory (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (e.g., ROM, EPROM, EEPROM, nonvolatile memory (NAND FLASH), solid State Disk (SSD)), 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. An IAB node information processing method, comprising:

the IAB node sends the IAB related information to an IAB host node;

2. The method of claim 1, wherein the IAB-related information comprises at least one of:

routing information;

returning an adaptive protocol layer BAP address;

path information;

an internet protocol, IP, address;

a flow control feedback type;

IAB indication information.

3. The method of claim 1, wherein in the case that the first condition comprises the IAB node handover failure HOF, the IAB-related information comprises: the information related to the IAB node before handover, and/or the configuration information related to the IAB node handover.

4. The method of claim 2, wherein the routing information comprises at least one of:

BAP route ID;

the radio link control BH RLC channel ID is returned.

5. The method of claim 2, wherein the path information comprises at least one of:

a target IAB node ID;

IAB host node ID;

BAP Path ID.

6. The method of claim 2, wherein the flow control feedback type comprises at least one of:

a first type of flow control feedback based on each BH RLC channel;

a second type of flow control feedback is based on each BAP route ID.

7. The method of claim 2, wherein the IAB indication information is used to indicate:

8. The method of claim 1, wherein said sending the IAB-related information to an IAB donor node comprises one of:

sending the IAB related information to an IAB host node at a first interval;

9. The method of claim 8, wherein prior to sending the IAB-related information to the IAB host node, the method further comprises:

and sending an IAB related information valid indication to the IAB host node.

10. An IAB node information processing method, comprising:

the IAB host node receives the IAB related information sent by the IAB node;

11. The method of claim 10, wherein prior to receiving IAB related information, the method further comprises:

12. The method of claim 11, wherein before sending a request message to an IAB node requesting reporting of IAB related information, the method further comprises:

and receiving an IAB related information valid indication sent by the IAB node.

13. An IAB node, comprising: memory, transceiver, 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:

14. An IAB host node, comprising: memory, transceiver, processor:

receiving IAB related information sent by an IAB node;

15. An apparatus for processing IAB node information, comprising:

a storage unit configured to store the IAB-related information if a first condition is satisfied;

16. An apparatus for processing IAB node information, comprising:

the IAB related information is information stored by the IAB node under the condition that a first condition is met; the first condition includes: one of an IAB node Radio Link Failure (RLF), an IAB node handover failure (HOF), an IAB node Connection Establishment Failure (CEF), and an IAB node connection recovery failure.

17. A processor-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for processing IAB node information according to any one of claims 1 to 12.