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Terminal device, PGW, and TWAG

專(zhuān)利號(hào)
US10980073B2
公開(kāi)日期
2021-04-13
申請(qǐng)人
SHARP KABUSHIKI KAISHA（JP Sakai）
發(fā)明人
Yudai Kawasaki; Yoko Kuge; Masafumi Aramoto
IPC分類(lèi)
G06F16/16; H04W76/15; H04W4/00; H04W88/06; H04W88/16; H04W72/04; H04W76/18; H04W76/11; H04W84/12
技術(shù)領(lǐng)域
pdn,nbifom,twag,ue,pgw,apn,connection,may,ifom,access
地域： Sakai

摘要

To provide a method of communication control and the like based on a multi-access PDN connection establishment request from a terminal device. Provided is communication control accompanied with establishment of a multi-access PDN connection or with rejection of establishment of a multi-access PDN connection, based on a response to a PDN connectivity establishment request from a terminal device.

說(shuō)明書(shū)

The UE 10 receives the PDN Connectivity Accept transmitted from the TWAG 74. Based on the reception of the PDN Connectivity Accept, the UE 10 transmits a PDN connectivity complete to the TWAG 74 (S1718). The UE 10 may transmit the PDN connectivity complete including at least the PDN connectivity complete message ID (PDN connectivity complete), the Procedure transaction ID, and the PDN connection ID.

Here, the PDN connectivity complete message ID may be a message type representing the PDN connectivity complete message.

The UE 10 and the PGW 30 cannot establish the first PDN connection after the second PDN connectivity procedure is completed. Based on the completion of the second PDN connectivity procedure, the UE 10 and the PGW 30 may establish the second PDN connection.

Based on the reception of the PDN Connectivity Accept, and/or the PDN connection attribute information and/or the Cause, the UE 10 may consider that the established PDN connection is the single-access PDN connection, instead of the multi-access PDN connection. More specifically, when the PDN connection attribute information is information indicating that the established PDN connection is not the multi-access PDN connection and/or information indicating that the established PDN connection is not a special PDN connection type, the UE 10 may consider that the established PDN connection is the single-access PDN connection.

Alternatively, when the PDN connection attribute information is information indicating that the established PDN connection is not the multi-access PDN connection and/or indicates that the PDN connection established in the present PDN connection procedure is the PDN connection for the LIPA, the PDN connection for the LIPA may be established.

權(quán)利要求

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