Telecommunications systems
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsJan Erik Söderkvist, Lars Peter Wahlström
Life of this patent
Estimating the term…
Abstract
A base station monitors signals received from cochannel interferers, and detects the air frame positions of the interfering transmissions. The base station then adjusts the air frame position of its own transmissions such that it minimizes the possibility of interference with the cochannel interferers.
Claims25
A transceiver, for receiving and transmitting signals on an operating frequency, the transceiver including a controller which operates to:
- control the transceiver to detect interfering transmissions on the operating frequency;
- calculate air frame positions of said interfering transmissions;
- and
- select an air frame position for transmissions from the transceiver to reduce the possibility of interference between transmissions from mobiles connected to the transceiver and the detected interfering transmissions.
A method of controlling a transceiver, for receiving and transmitting signals on an operating frequency, the method comprising:
- controlling the transceiver to detect interfering transmissions on the operating frequency;
- calculating air frame positions of said interfering transmissions;
- and
- selecting an air frame position for transmissions from the transceiver to reduce the possibility of interference between transmissions from mobiles connected to the transceiver and the detected interfering transmissions.
A base station operating on a first frequency, for use in a telecommunications network having a plurality of base stations, at least some of which also operate on the first frequency, the base station programmed to:
- monitor transmissions from mobile devices which are in communication with other base stations operating on the first frequency,
- calculate air frame positions of the monitored transmissions, and
- select an air frame position for its own transmissions on the basis of the calculated air frame positions of the monitored transmissions.
A method of operation of a base station forming part of a cellular telecommunications network, the base station operating on a first frequency, and the network also comprising a plurality of other base stations operating on the first frequency, the method comprising:
- monitoring transmissions from mobile devices in communication with the other base stations operating on the first frequency,
- determining air frame positions of the monitored transmissions, and
- selecting an air frame position for transmissions from said base station to minimize the possibility of a false detection of a sync word from one of said other base stations.
A base station, for use in a cellular communications network comprising a plurality of such base stations, the base station comprising:
- a transceiver operating on a predetermined frequency, said transceiver being one of a plurality of transceivers in the network operating on said predetermined frequency,
- wherein the transceiver measures a signal strength of transmissions received from other transceivers operating on said predetermined frequency, and determines air frame positions of the received transmissions, and
- wherein the transceiver adjusts the air frame position of its own transmissions on the basis of the measured signal strengths and the air frame positions of the received transmissions.
A method of operation of a base station in a cellular communications network comprising a plurality of such base stations, the base station comprising a transceiver operating on a predetermined frequency, and being one of a plurality of transceivers in the network operating on said predetermined frequency, the method comprising:
- measuring a signal strength of transmissions received from other transceivers operating on said predetermined frequency;
- determining air frame positions of the received transmission;
- and
- adjusting the air frame position of transmissions from the transceiver on the basis of the measured signal strengths and the air frame positions of the received transmissions.
Dependencies are inferred from the claim text.