Claims
- 1. In a time division multiple access mobile radio communication system operating on a plurality of radio channels, each radio channel being defined by a radio frequency and a time slot in a frame of time slots, a method for regulating transmission power between a mobile station and a base station comprising the steps of:
- measuring at a receiving station on a particular one of said radio channels a received power level from a transmitting station;
- calculating at said receiving station a new transmission power level for said particular radio channel using a predetermined received power level, a known transmission power level of said channel, and said measured received power level by determining a path loss between said transmitting station and said receiving station, said path loss equal to a difference between said known transmission power level and said measured received power level, wherein said new transmission power is equal to the sum of the predetermined received power level and the path loss; and
- ordering said transmitting station to transmit at said new transmission power level, wherein said new transmission power level is higher, lower, or equal to said known transmission power level.
- 2. The method according to claim 1, wherein said receiving station is said mobile station and said transmitting station is said base station.
- 3. The method according to claim 1, wherein said receiving station is said base station and said transmitting station is said mobile station.
- 4. The method according to claim 1, wherein said predetermined received power level is a function of a distance between said transmitting station and said receiving station.
- 5. The method according to claim 1 wherein said step of measuring further includes the steps of:
- sampling said received power level at regular intervals during a measurement period;
- filtering samples of said received power level; and
- calculating an average power level for said measurement period.
- 6. The method according to claim 1, wherein said predetermined received power level is a function of a path loss between said transmitting station and said receiving station.
- 7. In a time division multiple access mobile radio communications system operating on a plurality of radio channels, each radio channel being defined by a radio frequency and a time slot in a frame of time slots, a method of periodically regulating transmission power between a mobile station and a base station, said method comprising the steps of:
- sampling at regular intervals at a receiving station on a particular one of said radio channels a received power level from a transmitting station;
- periodically calculating at said receiving station a new transmission power level for said particular radio channel using a predetermined received power level, a known transmission power level of said channel, and said measured received power level by determining a path loss between said transmitting station and said receiving station, said path loss equal to a difference between said known transmission power level and said measured received power level, wherein said new transmission power is equal to the sum of the predetermined received power level and the path loss; and
- periodically ordering said transmitting station to transmit at said new transmission power level, wherein said new transmission power level is higher, lower, or equal to said known transmission power level.
- 8. In a time division multiple access mobile radio communication system operating on a plurality of radio channels, each radio channel being defined by a radio frequency and a time slot in a frame of time slots, a system for regulating transmission power between a mobile station and a base station comprising:
- means for measuring on a particular one of said radio channels at a receiving station a received power level from a transmitting station;
- means for calculating at the receiving station a new transmission power level for said particular radio channel using a predetermined received power level, a known transmission power level of said channel, and said measured received power level by determining a path loss between said transmitting station and said receiving station, said path loss equal to a difference between said known transmission power level and said measured received power level, wherein said new transmission power is equal to the sum of the predetermined received power level and the path loss;
- means at the receiving station for sending an order to said transmitting station to transmit at said new transmission power level, wherein said new transmission power level is higher, lower, or equal to said known transmission power level; and
- means at said transmitting station for receiving said order and for implementing said order.
- 9. The system according to claim 8, wherein said receiving station is said mobile station and said transmitting station is said base station.
- 10. The system according to claim 8, wherein said receiving station is said base station and said transmitting station is said mobile station.
- 11. The system according to claim 8, wherein said predetermined received power level is a function of a distance between said transmitting station and said receiving station.
- 12. The system according to claim 8 wherein said measuring means samples said received power level at regular intervals during a measurement period, filters samples of said received power level, and calculates an average power level for said measurement period.
- 13. The system according to claim 8, wherein said predetermined received power level is a function of a path loss between said transmitting station and said receiving station.
- 14. In a time division multiple access mobile radio communication system operating on a plurality of radio channels, each radio channel being defined by a radio frequency and a time slot in a frame of time slots, a system for periodically regulating transmission power between a mobile station and a base station comprising:
- means for sampling at regular intervals at a receiving station on a particular one of said radio channels a received power level from a transmitting station;
- means for periodically calculating at said receiving station a new transmission power level for said particular radio channel using a predetermined received power level, a known transmission power level of said channel, and said measured received power level by determining a path loss between said transmitting station and said receiving station, said path loss equal to a difference between said known transmission power level and said measured power level, wherein said new transmission power is equal to the sum of the predetermined received power level and the path loss; and
- means for periodically ordering said transmitting station to transmit at said new transmission power level, wherein said new transmission power level is higher, lower, or equal to said known transmission power level.
Parent Case Info
This application is a continuation of application Ser. No. 08/409,632, filed Mar. 23, 1995, now abandoned, which is a continuation of application Ser. No. 07/941,307, filed Sep. 4, 1992, now abandoned.
US Referenced Citations (25)
Foreign Referenced Citations (3)
Number |
Date |
Country |
548 939 |
Jun 1993 |
EPX |
2229609 |
Sep 1990 |
GBX |
WO 8600486 |
Jan 1986 |
WOX |
Non-Patent Literature Citations (2)
Entry |
Examensarbete by Karl Frosselius, Jun. 1, 1987. |
Effektreglering I Cellulara Mobiltelefonisystem by H.ang.kan Axen, Jun. 18, 1990. |
Continuations (2)
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Number |
Date |
Country |
Parent |
409632 |
Mar 1995 |
|
Parent |
941307 |
Sep 1992 |
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