Patent · US Active

5G session management handling on PSI mismatch

US11160123B2 · kind B2 · utility

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16Claims

0Family size

Assignee

MEDIATEK INC. · TW

Inventors

Chien-Chun Huang-Fu · Hsinchu, TW
Chi-Hsien Chen · New Taipei, TW
Yu-Chieh Tien · Baoshan, TW

Key dates

Filing date	Oct 4, 2019
Grant date	Oct 26, 2021
Priority date	—
Expiry date	Oct 4, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04W80/12
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method of handling PDU session identity (PSI) mismatch for PDU session procedures is proposed. In case a user equipment (UE) receives a 5G session management (5GSM) message in which the PSI value indicates that the PDU session is in 5GSM state PDU SESSION INACTIVE, the UE stays in its current 5GSM state for the PDU session and responds with a 5GSM status message including a 5GSM cause #43 “Invalid PDU session identity” to reduce signaling and UE handling effort. In case the UE receives a 5GSM message in which the PSI value is a reserved or an assigned value, the UE stays in its current 5GSM state for the PDU session and ignores the 5GSM message to reduce signaling.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.