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1. (WO1997016044) RETRANSMISSION CONTROL METHOD FOR CDMA MOBILE COMMUNICATION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/016044 International Application No.: PCT/JP1996/003059
Publication Date: 01.05.1997 International Filing Date: 22.10.1996
IPC:
H04B 7/26 (2006.01) ,H04L 1/16 (2006.01) ,H04L 1/18 (2006.01) ,H04W 28/04 (2009.01) ,H04W 4/00 (2009.01) ,H04W 72/04 (2009.01) ,H04W 74/04 (2009.01) ,H04L 1/00 (2006.01)
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
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
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
28
Network traffic or resource management
02
Traffic management, e.g. flow control or congestion control
04
Error control
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
4
Services or facilities specially adapted for wireless communication networks
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
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
W
WIRELESS COMMUNICATION NETWORKS
74
Wireless channel access, e.g. scheduled or random access
04
Scheduled access
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
Applicants:
NTT MOBILE COMMUNICATIONS NETWORK INC. [JP/JP]; 10-1, Toranomon 2-chome Minato-ku Tokyo 105, JP (AllExceptUS)
UEBAYASHI, Shinji [JP/JP]; JP (UsOnly)
ZHAO, Hui [CN/JP]; JP (UsOnly)
Inventors:
UEBAYASHI, Shinji; JP
ZHAO, Hui; JP
Agent:
KAWASAKI, Kenji ; Asahi Patent Office 5th floor, Yaesumasuya Building 2-16, Nihonbashi 3-chome Chuo-ku Tokyo 103, JP
Priority Data:
7/27595824.10.1995JP
Title (EN) RETRANSMISSION CONTROL METHOD FOR CDMA MOBILE COMMUNICATION
(FR) PROCEDE DE COMMANDE DE RETRANSMISSION POUR COMMUNICATIONS MOBILES AMDC
Abstract:
(EN) In the CDMA mobile communication in a one-way packet mode, a packet is divided into frames and the frames are transmitted. In order to retransmit the frames and thereby to improve the transmission efficiency, first, second, and third transmitting timings are determined by dividing a prescribed frame into three parts as the transmitting timings of backward control signals for a backward channel. A base station (100) transmits forward signals (a forward control signal and user data signals) to a mobile station (70) by using a code (A) (forward channel) in a certain frame. When the mobile station (70) receives the forward signals in the frame, the station (70) transmits the reception confirmation signal (backward control signal) of the forward signals to the station (100) by using a code (A') at the first transmitting timing of the next frame. When the forward signals are not received normally, the station (70) transmits a retransmission requesting signal (backward control signal) of the forward signals by using the code (A') at the first transmitting timing of the next frame. Mobile stations (80 and 90) also perform the same procedure. In this case, the transmitting timings of the stations (80 and 90) for the backward channel are the second and third transmitting timings.
(FR) En communications mobiles AMDC en mode unidirectionnel par paquets, un paquet est divisé en blocs et ces blocs sont transmis. Afin de retransmettre les blocs tout en améliorant le rendement de la transmission, on détermine un premier, un deuxième et un troisième instant de transmission en divisant un bloc prescrit en trois parties qui donnent les instants de transmission des signaux de commande vers l'arrière pour un canal arrière. Une station de base (100) transmet des signaux en avant (un signal de commande avant et des signaux de données d'utilisateurs) à une station mobile (70) en utilisant un code A (canal avant) dans un certain bloc. Quand la station mobile (70) reçoit les signaux avant dans le bloc, elle transmet le signal d'accusé de réception (signal de commande arrière) des signaux avant à la station (100) en utilisant un code A' au premier instant de transmission du bloc suivant. Quand les signaux avant ne sont pas reçus normalement, la station (70) transmet un signal de demande de retransmission (signal de commande arrière) des signaux avant en utilisant le code A' au premier instant de transmission du bloc suivant. Des stations mobiles (80) et (90) exécutent la même procédure. Dans ce cas, leurs instants de transmission pour le canal arrière sont les deuxième et troisième instants de transmission.
Designated States: CA, CN, KR, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
EP0802696US6157628CN1166261CA2201316KR1002920210000*