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Node switching method and device
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A technology of nodes and parent nodes, applied in the field of node switching methods and devices
Pending Publication Date: 2022-02-18
DATANG MOBILE COMM EQUIP CO LTD
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[0005] The purpose of the present invention is to provide a node switching method and device to solve the problem of how to make the IAB network service transmission more balanced or reduce the transmission delay during the IAB node switching process
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example 1
[0468] Such as Figure 6 As shown, it is the fifth schematicflowchart of the node switching method according to the embodiment of the present invention. In the figure, IABnode2 is the parent node of IAB node1, and IAB node1 may also be connected to more child nodes.
[0469] S1: IAB node1 and IAB node2 send their own node parameter information to the donor CU;
[0470] Wherein, this step is an optional step; here, the parameter information of the node is the target parameter in the above embodiment.
[0471] S2: The donor CU determines that IAB node1 satisfies the handover trigger condition;
[0472] Here, the donor CU can obtain the target parameters of the IAB node1 by scheduling the information transmitted by the IAB node, that is, according to the information scheduling of the centralized unit; it can also obtain the target parameters of the IAB node1 according to the topology of the IAB network, and can also obtain the target parameters of the IAB node1 through the Th...
example 2
[0482] Such as Figure 7 As shown, it is the sixth schematic flow diagram of the node switching method according to the embodiment of the present invention. In the figure, IABnode2 is the parent node of IAB node1, and IAB node1 may also be connected to more child nodes.
[0483] S11: IAB node1 determines that IAB node1 satisfies the switch trigger condition;
[0484] Here, the handover triggering condition has been specifically described in the foregoing embodiments, and will not be repeated here.
[0485] S12: IAB node1 sends a handover indication message to the donor CU;
[0486] Here, the handover instruction message has been described in detail in the foregoing embodiments, and will not be repeated here.
[0487] S13: the donor CU sends a switching request or an IAB node information modification request;
[0488] Here, this step is an optional step.
[0489] Here, the handover request or the IAB node information modification request is mainly used to trigger the cell ...
example 3
[0497] Such as Figure 8 Shown is the seventh schematicflowchart of the node switching method according to the embodiment of the present invention. In the figure, IABnode2 is the parent node of IAB node1, and IAB node1 may also be connected to more child nodes.
[0498] The handover trigger condition corresponding to this example is that the IAB node1 receives the RLF indication information sent by its parent node (that is, the IAB node2).
[0499] A1: The donor CU obtains the switching configuration information of IAB node1;
[0500] Here, the handover configuration information may be generated by the donor CU itself, or obtained through OAM or pre-configuration, or obtained through adjacent donor CUs.
[0501] A2: The donor CU sends switching configuration information to IAB node1;
[0502] In this step, the donor CU may send handover configuration information to the IAB node1 through F1 interface signaling or RRC signaling.
[0503] Here, there may be one or more sets ...
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Abstract
The invention provides a node switching method and a node switching device. The method and device are used for solving the problem of how to enable IAB network service transmission to be more balanced or reduce transmission delay in an IAB node switching process. The method comprises the following step: a concentration unit sends a first request message to a first IAB node under the condition that a first target parameter of the first IAB node meets a first switching trigger condition, wherein the first target parameter comprises at least one of the following items: the service volume of the first IAB node; the service volume sent by a second IAB node and received by the first IAB node; a hop count from the first IAB node to the concentration unit; a hop count from a parent node of the first IAB node to the concentration unit; and the current position of the first IAB node. According to the invention, switching is triggered based on a measurement quantity, and other switching factors are also considered, so IAB network service transmission is more balanced or the transmission delay is reduced in the IAB node switching process.
Description
technical field [0001] The field of communication technology involved in the present invention, in particular, relates to a node switching method and device. Background technique [0002] IAB (Integrated Access and Backhaul) network technology achieves the purpose of expanding the coverage of base stations by relaying wireless signals between multiple nodes. It is a network networking mode for 5G to solve the problem of base station coverage in the future. [0003] In the existing IAB network topology, an IAB node consists of two parts, one part is the DU part of the IAB MT (IABMobile Termination, IAB mobile terminal) connected to the base station or IAB node, and the base station or IAB node is called its The parent node; the other part is the MT part of the IAB DU (IAB Distributed Unit, IAB distributed unit) connected to the UE or IAB node, and the UE or IAB MT node is called its child node. [0004] With the further development of IAB technology, the topology of the IAB...
Claims
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Application Information
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