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1. (WO2019006172) METHOD AND APPARATUS FOR DOWNLINK RETRANSMISSION UNDER UNRELIABLE CODE BLOCK GROUP (CBG) LEVEL FEEDBACK
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Pub. No.: WO/2019/006172 International Application No.: PCT/US2018/040097
Publication Date: 03.01.2019 International Filing Date: 28.06.2018
IPC:
H04L 1/00 (2006.01) ,H04L 1/18 (2006.01) ,H04L 1/16 (2006.01)
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
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
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
Applicants:
QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714, US
Inventors:
SUN, Jing; US
YANG, Yang; US
Agent:
BURGESS, Jeffrey; US
Priority Data:
16/020,86227.06.2018US
62/527,00529.06.2017US
Title (EN) METHOD AND APPARATUS FOR DOWNLINK RETRANSMISSION UNDER UNRELIABLE CODE BLOCK GROUP (CBG) LEVEL FEEDBACK
(FR) PROCÉDÉ ET APPAREIL DE RETRANSMISSION DE LIAISON DESCENDANTE DANS UNE RÉTROACTION DE NIVEAU GROUPE DE BLOCS DE CODE (CBG) NON FIABLE
Abstract:
(EN) Aspects of the present disclosure relate to techniques for retransmission of code block groups when code block group (CBG) level feedback is unreliable. A user equipment (UE), in a first slot, transmits a first CBG feedback corresponding to a first set of CBGs received from a base station. In a second slot after the first slot, the UE receives downlink control information (DCI) and a first cyclic redundancy check (CRC). The first CRC is generated based on the DCI and further scrambled by a first concatenation of CBG feedbacks as decoded by the base station. The UE generates a second CRC based on the DCI and further scrambled by a second concatenation of CBG feedbacks including the first CBG feedback. The UE determines that the base station correctly decoded the first CBG feedback based on a comparison of the first CRC and the second CRC.
(FR) Des aspects de la présente invention concernent des techniques de retransmission de groupes de blocs de code lorsqu'une rétroaction de niveau groupe de blocs de code (CBG) n'est pas fiable. Dans un premier créneau temporel, un équipement d'utilisateur (UE) transmet une première rétroaction CBG correspondant à un premier ensemble de CBG reçu d'une station de base. Dans un second créneau temporel consécutif au premier créneau temporel, l'UE reçoit des informations de commande de liaison descendante (DCI) et un premier contrôle de redondance cyclique (CRC). Le premier CRC est généré sur la base des DCI et il est embrouillé par une première concaténation de rétroactions CBG décodées par la station de base. L'UE génère un second CRC sur la base des DCI, qui est embrouillé par une seconde concaténation de rétroactions CBG comprenant la première rétroaction CBG. L'UE détermine que la station de base a correctement décodé la première rétroaction CBG, sur la base d'une comparaison entre le premier CRC et le second CRC.
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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)