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

專利號(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
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)

In this case, if the access link slot format of node 2 and the slot format of node 3 are configured such that X periods do not overlap as illustrated in FIG. 19, all of D, X and U cannot be present in the backhaul link of node 2.

Accordingly, to configure slot formats such that all of D, X and U periods are present in the backhaul link of node 2, presence of the following restrictions in a slot format of access links available in an IAB environment is proposed.

1. Method 1. A slot format is configured such that X periods of access links under the same DgNB overlap in time.

2. Method 2. When node A and node B area scheduled, a slot format is configured such that X periods of an access link of node A and an access link of node B overlap in time.

An example of configuring a slot format of a backhaul link according to an access link slot format when a slot format is configured such that X periods of access links of nodes under the same DgNB or connected nodes overlap in time, as described above, is illustrated in FIG. 20. It is assumed that nodes and links are configured as illustrated in FIG. 11.

FIG. 20 schematically illustrates an example of a slot format of a backhaul link according to an access link slot format.

Here, a backhaul link slot format of a DgNB can be determined according to the access link slot format of the DgNB and the access link slot format of RN1. Here, the backhaul link slot format can be configured in the order of X, U, D and X or in the order of X, D, U and X according to configuration of access links. Here, an X period may be present between a U period and a D period or between a D period and a U period.

權(quán)利要求

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