| US 7,349,714 B2 | ||
| Power control apparatus and method in a wireless communication system using scheduled packet data service channel | ||
| Sung-Won Lee, Songnam-shi (Korea, Republic of); Soon-Young Yoon, Seoul (Korea, Republic of); Seung-Joo Maeng, Songnam-shi (Korea, Republic of); Woo-June Kim, Seoul (Korea, Republic of); Hong-Seong Chang, Songnam-shi (Korea, Republic of); and Hoon Chang, Seoul (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd, (Korea, Republic of) | ||
| Filed on Aug. 17, 2004, as Appl. No. 10/919,897. | ||
| Application 10/919897 is a division of application No. 09/805009, filed on Mar. 12, 2001, granted, now 6,810,253. | ||
| Claims priority of application No. 2000-12059 (KR), filed on Mar. 10, 2000. | ||
| Prior Publication US 2005/0026642 A1, Feb. 03, 2005 | ||
| Int. Cl. H04M 1/00 (2006.01) | ||
| U.S. Cl. 455—522 [455/436; 455/442; 455/450; 370/329; 370/331] | 7 Claims |
| 1. A method for controlling power of a second channel in a state where a base station controller (BSC) hands-off a mobile
station receiving packet data over the second channel from a first base station system (BSS) to a second BSS, in a system
in which the mobile station communicates with the first BSS and the second BSS adjacent to the first BSS through a first channel
for transmitting a control message, and the mobile station communicates with the first BSS through the second channel for
transmitting the packet data, the method comprising the steps of:
detecting power control information of the first channel, transmitted from the mobile station;
calculating transmission power SCH_power (supplemental channel power) of the second channel by adding a sum of a power value
power_offset (power offset) and a power control step value pc_step (power control step) to transmission power FDCH_power (fundamental
channel dedicated control channel power) of the first channel when the detected power control information of the first channel
is a power-up command;
calculating transmission power SCH_power of the second channel by subtracting the power control step value pc_step from the
sum of the power value power_offset and transmission power FDCH_power of the first channel when the detected power control
information of the first channel is a power-down command; and
controlling a signal on the second channel according to the calculated transmission power SCH_power.
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