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US 6,311,074 B1Granted
Base station and method for covering a cell of a cellular mobile radiotelephone system
AssigneeSiemens Aktiengesellschaft
InventorChristian Lüders
Life of this patent
Estimating the term…
Abstract
A base station is provided that contains at least one combination means to which at least two base station branches are connected for covering a cell. The transmission quality for a communication connection is monitored for each base station branch and base station branches are correspondingly activated or, respectively, deactivated for this communication connection in both transmission directions. The invention also can be realized in base stations that include sector antennas for covering a cell. The invention is particularly suited for utilization in cellular mobile radiotelephone systems; for example, the GSM mobile radiotelephone system.
Claims18
A method for covering a cell of a cellular mobile radiotelephone system, the method comprising the steps of:
- providing at least one combination means for connection control of at least two base station branches having individual antennas, wherein the at least two base station branches are provided for the coverage of the cell;
- monitoring, via the at least one combination means, individual transmission quality of each of the at least two base station branches for a respective communication connection between a mobile station and each of the at least two base station branches;
- connecting and disconnecting, respectively and independently, the communication connection for each of the at least two base station branches via the combination means, in both transmission directions corresponding to the individual transmission quality, wherein a base station branch that was disconnected for a communication connection is added in on a different carrier frequency for a further communication connection;
- using a time-division multiplex method on the communication connection;
- controlling the connection and disconnection of each of the at least two base station branches based on a respective time slot;
- and
- allocating a time slot to the communication connection wherein a plurality of occupied transmission and reception devices in the time slot is minimal in a respective base station branch having the greatest plurality of occupied transmission and reception devices.
4 more elements
A method for covering a cell of a cellular mobile radiotelephone system, the method comprising the steps of:
- providing at least one combination means for connection control of at least two base station branches having individual antennas, wherein the at least two base station branches are provided for the coverage of the cell;
- monitoring, via the at least one combination means, individual transmission quality of each of the at least two base station branches for a respective communication connection between a mobile station and each of the at least two base station branches;
- connecting and disconnecting, respectively and independently, the communication connection for each of the at least two base station branches via the combination means, in both transmission directions corresponding to the individual transmission quality, wherein a base station branch that was disconnected for a communication connection is added in on a different carrier frequency for a further communication connection;
- using a time-division multiplex method on the communication connection;
- controlling the connection and disconnection of each of the at least two base station branches based on a respective time slot;
- and
- relocating an already existing communication connection onto a selected time slot, wherein the communication connection that reduces cut-in blocking probability most is selected for relocation.
4 more elements
A method for covering a cell of a cellular mobile radiotelephone system, the method comprising the steps of:
- providing at least one combination means for connection control of at least two base station branches having individual antennas, wherein the at least two base station branches are provided for the coverage of the cell;
- monitoring, via the at least one combination means, individual transmission quality of each of the at least two base station branches for a respective communication connection between a mobile station and each of the at least two base station branches;
- connecting and disconnecting, respectively and independently, the communication connection for each of the at least two base station branches via the combination means, in both transmission directions corresponding to the individual transmission quality, wherein a base station branch that was disconnected for a communication connection is added in on a different carrier frequency for a further communication connection;
- using a time-division multiplex method on the communication connection;
- controlling the connection and disconnection of each of the at least two base station branches based on a respective time slot;
- and
- allocating a time slot to the communication connection wherein an overall cut-in blocking probability of individual base station branches is minimal.
4 more elements
A method for covering a cell of a cellular mobile radiotelephone system, the method comprising the steps of:
- providing at least one combination means for connection control of at least two base station branches having individual antennas, wherein the at least two base station branches are provided for the coverage of the the cell;
- monitoring via the at least one combination means, individual transmission quality of each of the at least two base station branches for a first communication connection between a first mobile station and each of the at least two base station branches;
- and
- connecting and disconnecting, respectively and independently, the communication connection for each of the at least two base station branches via the combination means, in both transmission directions corresponding (to the individual transmission quality so that the number of base station branches used for a communication connection is dependent on the transmission quality, wherein a base station branch that was disconnected for a communication connection is added in on a different carrier frequency for a second communication connection which is operated simultaneously with the first communication connection.
1 more element
A base station for communication connections to a plurality of mobile stations via radio interfaces comprising:
- at least one combination means;
- at least two base station branches connected to the at least one combination means, the at least two base station branches having individual antennas for covering a cell;
- means for monitoring individual transmission quality of each of the at least two base station branches for a first communication connection between a first mobile station and each of the at least two base station branches;
- and
- means for respectively and independently connecting and disconnecting the communication connection for each of the at least two base station branches in both transmission directions corresponding to the individual transmission quality so that the number of base station branches used for a communication connection is dependent on the transmission quality, wherein a base station branch that was disconnected for a communication connection is added in on a different carrier frequently for a second communication connection which is operated simultaneously with the first communication connection.
2 more elements
Dependencies are inferred from the claim text.