Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO1998049857) RANDOM ACCESS IN A MOBILE TELECOMMUNICATIONS SYSTEM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/049857 International Application No.: PCT/SE1998/000751
Publication Date: 05.11.1998 International Filing Date: 24.04.1998
Chapter 2 Demand Filed: 23.10.1998
IPC:
H04B 7/26 (2006.01) ,H04L 12/56 (2006.01) ,H04W 74/08 (2009.01) ,H04B 1/707 (2006.01) ,H04J 13/00 (2006.01) ,H04W 72/04 (2009.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
24
for communication between two or more posts
26
at least one of which is mobile
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12
Data switching networks
54
Store-and-forward switching systems
56
Packet switching systems
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
1
Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
69
Spread spectrum techniques
707
using direct sequence modulation
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
J
MULTIPLEX COMMUNICATION
13
Code division multiplex systems
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
04
Wireless resource allocation
Applicants:
TELEFONAKTIEBOLAGET LM ERICSSON [SE/SE]; S-126 25 Stockholm, SE
Inventors:
ESMAILZADEH, Riaz; JP
GUSTAFSSON, Maria; SE
Agent:
ERICSSON RADIO SYSTEMS AB; Common Patent Dept. S-164 80 Stockholm, SE
Priority Data:
08/847,65530.04.1997US
Title (EN) RANDOM ACCESS IN A MOBILE TELECOMMUNICATIONS SYSTEM
(FR) ACCES SELECTIF DANS UN SYSTEME DE TELECOMMUNICATIONS MOBILE
Abstract:
(EN) A method is disclosed that assigns each sector in a cell a unique preamble spreading code (106) and a unique long-code (116) which is concatenated with a signature-associated short code (112) to spread the data in the data field (120). The period selected for the long-code (116) can be relatively long in duration (e.g., up to hours or days in length). The widths of the transmission time slots are set equal to the length of the preambles (108). Consequently, the mobile station's random access requests (20, 22, 24) can be timed to start at the beginning of the slots, and detected during the preamble periods by the matched filter in the base station's random access receiver. The data field (120) of the mobile station's random access request (20, 22, 24) is transmitted in the slots following the preamble (108) and received by the rake receiver at the base station.
(FR) L'invention concerne un procédé permettant d'affecter à chaque secteur d'une cellule un code (106) d'étalement de préambule (106) unique et à un code long (116) unique qui est concaténé avec un code court (112) associé à la signature, en vue de distribuer les données dans le champ de données (120). La période sélectionnée pour le code long (116) peut être relativement longue (p.ex. plusieurs heures ou plusieurs jours). Les largeurs des créneaux temporels de transmission sont réglées à la longueur des préambules (108). Par conséquent, les demandes d'accès sélectif (20, 22, 24) des stations mobiles peuvent être temporisées pour commencer au début des créneaux temporels, et détectées pendant les périodes de préambule par le filtre adapté du récepteur à accès sélectif de la station de base. Le champ de données (120) de la demande accès sélectif (20, 22, 24) de la station mobile est émis dans les créneaux consécutifs au préambule (108) et reçu par le récepteur à bandes de la station de base.
front page image
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
MXPA/a/1999/009589KR1020010020279SG68417EP0979585EP1345464EP1619922
RU02204220JP2001522557 CN1254487CA2288004AU1998074587