IAB link control method, communication unit and computer readable storage medium

A link control and communication unit technology, applied in the field of communication, can solve problems such as prolonged interruption, poor link status, congestion, etc., and achieve the effect of reducing interruption delay

Pending Publication Date: 2019-12-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The IAB link control method, communication unit, and computer-readable storage medium provided by the embodiments of the present invention mainly solve the technical problem tha

Method used

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  • IAB link control method, communication unit and computer readable storage medium
  • IAB link control method, communication unit and computer readable storage medium
  • IAB link control method, communication unit and computer readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] In order to interrupt the link communication between the relay node and its service node due to poor link status or congestion, the existing mechanism can only re-establish the process through the reconstruction process, but the interruption delay caused by this is very long and may not be able to meet the service requirements. The problem of business delay requirements. In the embodiment of the present invention, an integrated access backhaul IAB link control method is provided, please refer to figure 2 , the IAB link control method includes:

[0083] S201. The communication unit receives control information sent by the CU.

[0084] In the embodiment of the present invention, the communication unit includes at least one of an IAB, a terminal, a DU, a terminal part of the IAB, a DU part of the IAB, and a relay. For example, when the control information includes routing information, the communication unit includes a terminal, or the terminal part of the IAB, or the DU...

Embodiment 2

[0128] When the IAB node learns that one of the parent IAB nodes has RLF, the IAB can inform the donor CU or child IAB of the current link status, so that the donor CU or child IAB can learn the current link status and update the route. Therefore, the embodiment of the present invention also provides an IAB link control method, such as image 3 As shown, the link control method includes:

[0129] S301. The IAB learns that the upper-layer IAB of the IAB has a link failure or is performing link migration / adjustment.

[0130] In the embodiment of the present invention, the IAB node can know that the upper layer IAB has a link failure or is performing link migration / adjustment according to its parent IAB occurrence RLF indication information; Link migration, the parent IAB of the IAB node stops serving, and the IAB node can also detect that RLF has occurred.

[0131] S302. The IAB sends link state indication information to the donor CU or child IAB subnode.

[0132] The link st...

Embodiment 3

[0136] When the IAB learns that the current link fails or is performing link migration, the IAB needs to re-establish the link in order to connect to the donorCU. Therefore, in an embodiment of the present invention, an IAB link control method is provided, such as Figure 4 As shown, the IAB link control method includes:

[0137] S401. The IAB learns that the upper layer IAB of the IAB has a link failure or is performing link migration / adjustment;

[0138] S402. Send an RRC reconstruction request to the donor CU;

[0139] S403. Receive an RRC reestablishment message.

[0140] In the embodiment of the present invention, the RRC rebuilding request includes the reason for rebuilding, and the rebuilding reason includes: the upstreamIAB node has a link failure or is performing link migration / adjustment; it can be understood that the donor CU receives the RRC rebuilding request and downloads to the IAB Send an RRC re-establishment message, the RRC re-establishment message include...

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Abstract

The embodiment of the invention provides an IAB link control method, a communication unit and a computer readable storage medium. The method comprises steps of receiving control information sent by aCU through the communication unit; executing an operation corresponding to the control information according to the control information, wherein the communication unit comprises at least one of an IAB, a terminal, a DU, a terminal part of the IAB, a DU part of the IAB and a relay, and in the embodiment of the invention, the communication unit performs corresponding control operation on the IAB link according to the control information sent by the CU so as to reduce interruption time delay.

Description

technical field [0001] Embodiments of the present invention relate to but are not limited to the field of communication technologies, and specifically, relate to but are not limited to an IAB link control method, a communication unit, and a computer-readable storage medium. Background technique [0002] Related technologies In order to improve network capacity and coverage while taking into account the need for flexibility in cell deployment, a relay link supporting wireless backhaul transmission is proposed to implement dense network deployment. The node supporting the relay function is called Relay Node, or RN for short. RN provides functions and services similar to ordinary eNB for UEs accessing its cell. The wireless interface between RN and UE is called "Access Link". Access to a base station eNB serving it, and the eNB serving the RN is called a donor base station (Donor eNB, DeNB for short). The wireless interface between the RN and the DeNB is called a "Backhaul Li...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04W36/00H04W36/30H04W76/19H04W76/27
CPCH04W28/0289H04W28/0236H04W36/0083H04W36/30H04W76/19H04W76/27H04W76/12H04W40/24H04W36/0055H04W36/305H04W84/047
Inventor 罗薇陈琳
Owner ZTE CORP
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