WIRELESS COMMUNICATION APPARATUS AND TRANSMISSION POWER CONTROL METHOD
First Claim
1. A wireless communication apparatus comprising:
- a base unit; and
one or a plurality of handsets, wherein;
the base unit amplifies a control signal to a first transmission power value and transmits the control signal to each of the handsets using a control channel during a standby state, the control signal including information indicating the first transmission power value, and the control channel being used for transmitting the control signal;
each of the handsets measures a received signal strength indicator level of the control signal and determines a second transmission power value based on the measured value of the received signal strength indicator level and the first transmission power value;
each of the handsets amplifies a signal to a second transmission power value and transmits the signal to the base unit using only one slot at predetermined time intervals, the signal including information indicating the second transmission power value; and
the base unit measures a received signal strength indicator level of the signal transmitted from each of the handsets and determines the first transmission power value based on the measured value of the received signal strength indicator level and the second transmission power value.
0 Assignments
0 Petitions
Accused Products
Abstract
A base unit transmits information indicating a transmission power value of the base unit to a handset using a channel for transmitting a control signal during standby state. The handset measures a received signal strength indicator level of the control signal transmitted from the base unit, determines a transmission power value of the handset from the measured value of the received signal strength indicator level and information of the transmission power value of the base unit, and transmits a signal including a notification message including the information indicating the transmission power value of handset to the base unit using only one predetermined slot at predetermined time intervals.
14 Citations
13 Claims
-
1. A wireless communication apparatus comprising:
-
a base unit; and one or a plurality of handsets, wherein; the base unit amplifies a control signal to a first transmission power value and transmits the control signal to each of the handsets using a control channel during a standby state, the control signal including information indicating the first transmission power value, and the control channel being used for transmitting the control signal; each of the handsets measures a received signal strength indicator level of the control signal and determines a second transmission power value based on the measured value of the received signal strength indicator level and the first transmission power value; each of the handsets amplifies a signal to a second transmission power value and transmits the signal to the base unit using only one slot at predetermined time intervals, the signal including information indicating the second transmission power value; and the base unit measures a received signal strength indicator level of the signal transmitted from each of the handsets and determines the first transmission power value based on the measured value of the received signal strength indicator level and the second transmission power value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A transmission power control method in a wireless communication apparatus including a base unit and one or a plurality of handsets, the base unit performing radio communication in a time division multiple access (TDMA) scheme with each of the handsets in the wireless communication apparatus, the transmission power control method comprising:
-
amplifying, by the base unit, a control signal to a first transmission power value, and transmitting from the base unit, the control signal to each of the handsets using a control channel, the control signal including information indicating the first transmission power value, and the control channel being used for transmitting the control signal; measuring, by each of the handsets, a received signal strength indicator level of the control signal; determining, by the each of the handsets, a second transmission power value based on the measured value of the received signal strength indicator level and the first transmission power value; amplifying, by each of the handsets, a signal to a second transmission power value, and transmitting the signal to the base unit using only one slot, the signal including information indicating the second transmission power value, the one slot having a predetermined positional relationship with the slot used for receiving the control signal; measuring, by the base unit, a received signal strength indicator level of the signal transmitted from each of the handsets; and determining, by the base unit, the first transmission power value based on the measured value of the received signal strength indicator level of the signal transmitted from each of the handsets and the second transmission power value. - View Dependent Claims (13)
-
Specification