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1. (WO2018125515) DIRECTIONAL RECEPTION AND PERIODIC RTS/CTS TRANSMISSION TO ESTIMATE INTERFERENCE
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Pub. No.: WO/2018/125515 International Application No.: PCT/US2017/064238
Publication Date: 05.07.2018 International Filing Date: 01.12.2017
IPC:
H04W 74/08 (2009.01) ,H04B 7/06 (2006.01)
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]
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
02
Diversity systems
04
using a plurality of spaced independent aerials
06
at transmitting station
Applicants:
QUALCOMM INCORPORATED [US/US]; Attn: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714, US
Inventors:
ISLAM, Muhammad Nazmul; US
SUBRAMANIAN, Sundar; US
LI, Junyi; US
Agent:
ANDERSON, Thomas D.; US
Priority Data:
15/695,67205.09.2017US
62/439,56928.12.2016US
Title (EN) DIRECTIONAL RECEPTION AND PERIODIC RTS/CTS TRANSMISSION TO ESTIMATE INTERFERENCE
(FR) RÉCEPTION DIRECTIONNELLE ET TRANSMISSION RTS/CTS PÉRIODIQUES POUR ESTIMER DES INTERFÉRENCES
Abstract:
(EN) A transmitting device may determine that a first neighbor device is communicating with a second neighbor device based on a signal received from the first device (e.g., a request-to-send (RTS) signal) during a listen-before-talk (LBT) period. The transmitting device may also identify a direction of the second neighbor device (e.g., based on signals received during a previous LBT period), and determine the amount of interference that a directional transmission may cause at the second neighbor device. The determination may be based on whether the transmission direction (i.e., a beam direction of a directional transmission) is in a same direction as the second neighbor device. If the interference level is below a threshold, the transmitting device may perform the transmission despite receiving the signal during the LBT period. If the interference level is above the threshold, the transmitting device may refrain from transmitting.
(FR) L'invention concerne un dispositif de transmission qui peut déterminer qu'un premier dispositif voisin communique avec un second dispositif voisin sur la base d'un signal reçu en provenance du premier dispositif (par exemple, un signal de demande à envoyer (RTS)) pendant une période d'écoute avant de parler (LBT). Le dispositif de transmission peut également identifier une direction du second dispositif voisin (par exemple, sur la base de signaux reçus pendant une période LBT précédente), et déterminer la quantité d'interférences qu'une transmission directionnelle peut provoquer au niveau du second dispositif voisin. La détermination peut être basée sur le fait que la direction de transmission (c'est-à-dire, une direction de faisceau d'une transmission directionnelle) est dans une même direction que le second dispositif voisin. Si le niveau d'interférence est inférieur à un seuil, le dispositif de transmission peut effectuer la transmission malgré la réception du signal pendant la période LBT. Si le niveau d'interférence est supérieur au seuil, le dispositif de transmission peut s'abstenir de transmettre.
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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)