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1. (WO2018089239) LATENCY REDUCTION IN SHARED OR UNLICENSED SPECTRUM
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Pub. No.: WO/2018/089239 International Application No.: PCT/US2017/059554
Publication Date: 17.05.2018 International Filing Date: 01.11.2017
IPC:
H04W 72/12 (2009.01) ,H04L 1/18 (2006.01) ,H04W 72/14 (2009.01) ,H04W 74/08 (2009.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
72
Local resource management, e.g. selection or allocation of wireless resources or wireless traffic scheduling
12
Wireless traffic scheduling
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1
Arrangements for detecting or preventing errors in the information received
12
by using return channel
16
in which the return channel carries supervisory signals, e.g. repetition request signals
18
Automatic repetition systems, e.g. van Duuren system
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
72
Local resource management, e.g. selection or allocation of wireless resources or wireless traffic scheduling
12
Wireless traffic scheduling
14
using a grant channel
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
74
Wireless channel access, e.g. scheduled or random access
08
Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
Applicants:
QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714, US
Inventors:
HOSSEINI, Seyedkianoush; US
YERRAMALLI, Srinivas; US
CHEN, Wanshi; US
SUN, Jing; US
XU, Hao; US
PATEL, Shimman Arvind; US
Agent:
DRAPKIN, Michael L.; US
Priority Data:
15/460,21515.03.2017US
62/419,68809.11.2016US
Title (EN) LATENCY REDUCTION IN SHARED OR UNLICENSED SPECTRUM
(FR) RÉDUCTION DE LATENCE DANS UN SPECTRE PARTAGÉ OU SANS LICENCE
Abstract:
(EN) Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit uplink (UL) messages in unlicensed spectrum with a reduced UL timing delay. The UL timing delay may be reduced by using a shortened transmission time interval (TTI) (e.g., a TTI that is reduced in duration relative to other TTIs in the system or in a legacy system) or by reducing the number of TTIs between a grant and the corresponding UL message. The reduced UL timing delay may decrease the likelihood that the UE will wait for a subsequent transmit opportunity (TxOp) to transmit the UL message. In some cases, the reduced UL timing delay corresponds to a reduced hybrid automatic repeat request (HARQ) processing delay. In some cases, a time difference (e.g., measured in TTIs) between a measurement reference TTI a corresponding channel state information (CSI) report may also be reduced.
(FR) L'invention concerne des procédés, des systèmes et des dispositifs de communication sans fil. Un équipement d'utilisateur (UE) peut émettre des messages de liaison montante (UL) dans un spectre sans licence avec un retard de rythme UL réduit. Le retard de rythme UL peut être réduit en utilisant un intervalle de temps d'émission (TTI) raccourci (p. ex. un TTI dont la durée est réduite par rapport à d'autres TTI dans le système ou dans un système patrimonial) ou en réduisant le nombre de TTI entre une attribution et le message UL correspondant. Le retard de rythme UL réduit peut diminuer la probabilité que l'UE attende une opportunité d'émission (TxOp) ultérieure pour émettre le message UL. Dans certains cas, le retard de rythme UL réduit correspond à un retard de traitement réduit de demande de répétition automatique hybride (HARQ). Dans certains cas, un écart temporel (p. ex. mesuré en TTI) entre un TTI de référence de mesure et un compte rendu correspondant d'informations d'état de canal (CSI) peut également être réduit.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)