Method for producing a semiconductor storage device

• US 6,650,907 B1
• Filed: 03/22/2001
• Issued: 11/18/2003
• Est. Priority Date: 06/23/1998
• Status: Expired due to Fees

• Current Assignee: Gigaset Communications GmbH (Gigaset AG)
• Original Assignee: Siemens AG
• Inventors: Ulrich, Thomas, Färber, Michael, Schwark, Uwe, Bolinth, Edgar, Benz, Michael, Kottkamp, Meik, Klein, Anja, Kamperschroer, Erich, Sitte, Armin
• Primary Examiner(s): Maung, Nay
• Assistant Examiner(s): GANTT, ALAN T
• Application Number:
  US09/720,476
• Time in Patent Office: 971 Days
• Field of Search: 455/522, 455/69, 455/12.1, 455/427, 455/423, 370/318
• US Class Current: 455/522
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 52/343 taking into account loading or congestion level
• CPC Class Codes: H04W 52/346 distributing total power among users or channels
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Abstract

In order to control the transmitting power provided for point-to-multipoint telecommunications links in a telecommunications system with wireless telecommunication and uncoordinated unlicensed system operation, without significant restriction of the transmitting range, use is made of the fact that the maximum number of mobile stations (MS1 . . . MSn) registered in a base station (BS1) is known. Thus, the base station knows at any time how many and which mobile stations are registered. If all mobile stations are registered (N_ACT=N_SCHED), the base station can match the transmitting power to the mobile station received as the “weakest one”. In other cases, if not all mobile stations are registered (N_ACT≠N_SCHED), the base station will alternately transmit with the maximum transmitting. power for a predetermined first period of time and then with the reduced transmitting power, which matches the mobile station received as the “weakest one”, for a predetermined second period of time.

Claims

1. A method for controlling power in point-to-multipoint telecommunications links in telecommunications systems with wireless telecommunications and uncoordinated unlicensed system operation, comprising the following features:

(a) allocating a SCHEDULED number of mobile parts registered in the base station to a coverage area of a base station supporting uncoordinated unlicensed system operation,

(b) sending a first message to the mobile parts located within the coverage area of the base station at a predetermined first time recurring at regular intervals in connection with a point-to-multipoint telecommunications link by the base station,

(c) sending a second message to the base station in each case at a mobile-part-specific second time recurring at regular intervals by the respective mobile part, the second time being determinable by events,

(d) detecting an ACTUAL number of mobile parts registered in the base station and located within the coverage area of the base station by the base station using second messages sent by the mobile part,

(e) if the ACTUAL number matches the SCHEDULED number, sending by the base station the first message with a first transmitting power which is reduced compared with a maximum power and which is dimensioned in such a manner that a mobile part, the second message of which has been received as the weakest one in the base station, still reliably receives the first message,

(f) if the ACTUAL number does not match the SCHEDULED number, sending by the base station the first message with the maximum transmitting power for a predetermined first period of time and then with the first transmitting power for a predetermined second period of time.

2. The method as claimed in claim 1, wherein a period value “

zero”

is allocated to the second period of time.

3. The method as claimed in claim 1, further comprising the step of:

using a point-to-multipoint telecommunications link for a broadcast control channel.

4. The method as claimed in claim 1, wherein wireless telecommunications is carried out in accordance with one of CDMA, FDMA, and TDMA access method and in accordance with one of TDD and FDD principle.