EP 0938824 A2 19990901 - METHOD OF, AND SYSTEM FOR, TRANSMITTING MESSAGES
Title (en)
METHOD OF, AND SYSTEM FOR, TRANSMITTING MESSAGES
Title (de)
VERFAHREN UND SYSTEM ZUR ÜBERTRAGUNG VON NACHRICHTEN
Title (fr)
PROCEDE ET SYSTEME POUR TRANSMETTRE DES MESSAGES
Publication
Application
Priority
- GB 9700357 A 19970109
- IB 9800010 W 19980107
Abstract (en)
[origin: WO9831170A2] A message transmission system comprising at least one primary station (10, 14, 16, 22) having means for making transmissions on a down-link and a plurality of secondary stations (18, 20) having means for making transmissions on an up-link in response to an invitation issued by the primary station on the down-link. Each of the secondary stations has means for generating responses to messages as pseudo-random data sequences. The generation of these responses commences at an integer multiple of a unit time period after a time reference determined with respect to the invitation signal. A secondary station may wish to transmit a second or a further response signal associated with the originally received message and for which no invitation is issued. Said second or further response signal is transmitted at a point in time which is another integer multiple of the unit time period after the said time reference.
IPC 1-7
IPC 8 full level
H04W 84/02 (2009.01)
CPC (source: EP)
H04W 84/025 (2013.01)
Citation (search report)
See references of WO 9831170A2
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9831170 A2 19980716; WO 9831170 A3 19980917; CN 1217858 A 19990526; EP 0938824 A2 19990901; GB 9700357 D0 19970226; JP 2000507077 A 20000606; KR 20000064563 A 20001106; TW 362314 B 19990621
DOCDB simple family (application)
IB 9800010 W 19980107; CN 98800216 A 19980107; EP 98900009 A 19980107; GB 9700357 A 19970109; JP 52915898 A 19980107; KR 19980707049 A 19980907; TW 86117446 A 19971121