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1. WO2020206037 - COMMUNICATION FALLBACK IN 5G SYSTEMS AND METHODS

Publication Number WO/2020/206037
Publication Date 08.10.2020
International Application No. PCT/US2020/026265
International Filing Date 01.04.2020
IPC
H04W 36/14 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Handoff or reselecting arrangements
14Reselecting a network or an air interface
H04W 36/00 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Handoff or reselecting arrangements
H04W 88/06 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
88Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
02Terminal devices
06adapted for operation in multiple networks, e.g. multi-mode terminals
CPC
H04W 36/0022
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Hand-off or reselection arrangements
0005Control or signalling for completing the hand-off
0011for data session or connection
0022for transferring sessions between adjacent core network technologies
H04W 36/0033
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Hand-off or reselection arrangements
0005Control or signalling for completing the hand-off
0011for data session or connection
0033with transfer of context information
H04W 36/0069
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Hand-off or reselection arrangements
0005Control or signalling for completing the hand-off
0055Transmission and use of information for re-establishing the radio link
0069in case of dual connectivity, e.g. CoMP, decoupled uplink/downlink or carrier aggregation
H04W 36/26
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Hand-off or reselection arrangements
24Reselection being triggered by specific parameters ; used to improve the performance of a single terminal
26by agreed or negotiated communication parameters
H04W 36/305
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Hand-off or reselection arrangements
24Reselection being triggered by specific parameters ; used to improve the performance of a single terminal
30by measured or perceived connection quality data
305Reselection due to radio link failure
Applicants
  • T-MOBILE USA, INC. [US]/[US]
Inventors
  • RAHMAN, Muhammad Tawhidur
Agents
  • PETROVIC, Lena
  • DALEY-WATSON, Christopher
Priority Data
16/372,39601.04.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COMMUNICATION FALLBACK IN 5G SYSTEMS AND METHODS
(FR) SYSTÈMES ET PROCÉDÉS DE REPLI DE COMMUNICATION EN 5G
Abstract
(EN)
Systems and methods for performing Evolved Packet System (EPS) fallback from a 5G system to an Evolved Packet Core (EPC) system are disclosed. The method, performed in a mobile device, detects a communication at the mobile device. The method then determines whether either the mobile device or a base station supports the communication over new radio. Directly in response to determining that either one of the mobile device or the base station does not support the communication over new radio, the method generates and transmits an EPS fallback message from the mobile device to the base station, wherein the EPS fallback message instructs the base station to initiate a fallback procedure from the 5G system to the EPC system.
(FR)
L'invention concerne des systèmes et des procédés pour effectuer un repli par système de paquets évolué (EPS) à partir d'un système 5G vers un système central de paquets évolué (EPC). Le procédé, mis en œuvre dans un dispositif mobile, détecte une communication au niveau du dispositif mobile. Le procédé détermine ensuite si le dispositif mobile ou une station de base prend en charge la communication par le biais de la nouvelle radio. Directement en réponse à la détermination du fait que l'un ou l'autre du dispositif mobile ou de la station de base ne prend pas en charge la communication par le biais de la nouvelle radio, le procédé génère et transmet un message de repli EPS du dispositif mobile à la station de base, le message de repli EPS ordonnant à la station de base d'initier une procédure de repli du système 5G vers le système EPC.
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