Method of transmitting and receiving power control messages in a CDMA cellular radio system
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United States of America Patent
Stats
-
Oct 29, 1996
Grant Date -
N/A
app pub date -
Nov 3, 1995
filing date -
Jan 12, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a data transmission method in a CDMA cellular radio system, which comprises in each cell at least one base station (10) communicating with mobile stations (11, 12) within its coverage area and in which system the base station adjusts the transmitting power of the mobile stations within its area by means of power control massages. To enable coherent detection at the base station, according to the method the transmission on the traffic channel is performed both in the transmission direction from the mobile station to the base station and from the base station to the mobile station by using a similar frame structure. When the base station transmits a power control message to the mobile station by using bits of the frame structure of the traffic channel, the mobile station transmits a predetermined bit pattern to the base station in the corresponding bits of the other transmission direction of the traffic channel.
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