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1. WO2020198190 - EXPEDITED RETRANSMISSION DURING CALL SETUP

Publication Number WO/2020/198190
Publication Date 01.10.2020
International Application No. PCT/US2020/024388
International Filing Date 24.03.2020
IPC
H04L 29/06 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
29Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/-H04L27/136
02Communication control; Communication processing
06characterised by a protocol
H04L 29/08 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
29Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/-H04L27/136
02Communication control; Communication processing
06characterised by a protocol
08Transmission control procedure, e.g. data link level control procedure
H04W 36/00 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Handoff or reselecting arrangements
H04W 36/14 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
36Handoff or reselecting arrangements
14Reselecting a network or an air interface
CPC
H04L 1/1816
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
12by using return channel
16in which the return channel carries supervisory signals, e.g. repetition request signals
18Automatic repetition systems, e.g. van Duuren system ; ; ARQ protocols
1812Hybrid protocols
1816with retransmission of the same, encoded, message
H04L 43/0864
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
43Arrangements for monitoring or testing packet switching networks
08Monitoring based on specific metrics
0852Delays
0864Round trip delays
H04L 5/0055
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0053Allocation of signaling, i.e. of overhead other than pilot signals
0055Physical resource allocation for ACK/NACK
H04L 65/1006
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
65Network arrangements or protocols for real-time communications
10Signalling, control or architecture
1003Signalling or session protocols
1006SIP
H04L 65/1069
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
65Network arrangements or protocols for real-time communications
10Signalling, control or architecture
1066Session control
1069Setup
H04W 36/0066
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
0066of control information between different types of networks in order to establish a new radio link in the target network
Applicants
  • T-MOBILE USA, INC. [US]/[US]
Inventors
  • CHIANG, Hsin-Fu Henry
  • KWOK, Ming Shan
Agents
  • PECK, Robert C.
  • HARTMAN, Robert G.
Priority Data
16/368,63328.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EXPEDITED RETRANSMISSION DURING CALL SETUP
(FR) RETRANSMISSION EXPRÈS DURANT L'ÉTABLISSEMENT D'UN APPEL
Abstract
(EN)
Systems, devices, and techniques described herein relate to selectively implementing an expedited retransmission time. In some examples, a call setup message is transmitted to a first network system associated with a first network access technology. A transfer request may be received from the first network system. The transfer request may indicate handover or redirection to a second network system associated with a second network access technology. Upon expiration of the expedited retransmission time after receiving the transfer request, the call setup message can be retransmitted to the second network system.
(FR)
Des systèmes, des dispositifs et des techniques décrits dans la présente invention concernent la mise en œuvre sélective d'un temps de retransmission exprès. Dans certains exemples, un message d'établissement d'appel est transmis à un premier système de réseau associé à une première technologie d'accès au réseau. Une demande de transfert peut être reçue en provenance du premier système de réseau. La demande de transfert peut indiquer un transfert ou une redirection vers un second système de réseau associé à une seconde technologie d'accès au réseau. À l'expiration du temps de retransmission exprès après la réception de la demande de transfert, le message d'établissement d'appel peut être retransmis au second système de réseau.
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