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Method for slot format for backhaul and access link in wireless communication system and terminal using same method

專(zhuān)利號(hào)
US11350410B2
公開(kāi)日期
2022-05-31
申請(qǐng)人
LG Electronics Inc.（KR Seoul）
發(fā)明人
Hyangsun You; Yunjung Yi; Huayue Song
IPC分類(lèi)
H04W72/04; H04W72/12; H04W84/04
技術(shù)領(lǐng)域
backhaul,node,link,dgnb,slot,in,access,ue,rn,iab
地域： Seoul

摘要

The present disclosure provides a method for data transmission or reception performed by a first node in a wireless communication system, the method including: performing a first data transmission or reception to or from a UE on an access link on the basis of a first timing case in an access time duration; and performing a second data transmission or reception to or from a second node or a donor base station on a backhaul link on the basis of a second timing case in a backhaul time duration, wherein downlink transmission timings over the donor base station, the first node, the second node and the UE are aligned in the first timing case, and downlink and uplink transmission timings or downlink and uplink reception timings are aligned in the first node in the second timing case.

說(shuō)明書(shū)

Here, when the same slot format is applied to each backhaul link for one RN, a situation in which the same RN needs to simultaneously perform transmission and reception may occur. In the case of RN 1 in FIG. 11, for example, if the slot format between DgNB and RN 1 is the same as the slot format between RN 1 and RN 2, a situation in which the two backhaul links are DL or UL at the same time occurs. In this case, RN 1 needs to simultaneously perform transmission of a DL signal to RN 2 and reception of a DL signal from the DgNB. Otherwise, RN 1 needs to simultaneously perform reception of a UL signal from RN 2 and transmission of a UL signal to the DgNB. This operation may act as considerable interference on RN 1 and is impossible in the case of a half-duplex operation.

In this case, it is desirable to receive a UL signal from RN 1 while receiving a DL signal from the DgNB and it is desirable to transmit a DL signal to RN 2 while transmitting a UL signal to the DgNB from the viewpoint of RN 1.

This means that the same slot format cannot be used between backhaul links. Accordingly, the present disclosure proposes the following methods.

1. Method 1: Different slot formats may be applied to backhaul links connected to specific nodes (DgNB and RN).

For example, when RN1 is connected to the DgNB and RN2, a slot format applied to a DgNB-RN1 backhaul link may be different from a slot format applied to an RN1-RN2 backhaul link.

When RN1 is connected to RN2 and RN3, a slot format applied to an RN1-RN2 backhaul link may be different from a slot format applied to an RN1-RN3 backhaul link.

2. Method 2: Different slot formats may be applied to a backhaul link with respect to a scheduled node and a backhaul link with respect to a scheduling node.

權(quán)利要求

1
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