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US 8,620,340 B2Granted
Interference avoidance in mobile communication network employing distributed antenna system
AssigneeNokia Siemens Networks Oy
InventorsAntti Tölli, Petri Komulainen, Juha Karjalainen, Harri Pennanen
Life of this patent
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Abstract
There is provided a solution for improving the efficiency of a mobile communication network applying a distributed antenna system. The solution includes avoiding inter-cell interference with only a limited amount of backhaul information exchange between the base stations of the distributed antenna system, and applying beamforming techniques according to determined user allocation.
Claims22
A method, comprising:
- determining, in a base station of a distributed antenna system comprising at least two base stations, the user allocation options comprising the possible serving base stations for each user terminal within the distributed antenna system;
- determining quality information related to at least one of the following:
- the user allocation options comprising the user terminals that are possibly served by each base station, and a communication link for each user terminal that is possibly served by a base station, wherein the quality information comprises either a combined rate for each user allocation option regarding the base station or a channel gain for each communication link between the base station and the user terminals that are possibly served by the base station, wherein the combined rate corresponds to all of the communication links between the base station and the user terminals in one user allocation option;
- communicating to each base station of the distributed antenna system at least one user allocation option comprising information representing at least one user terminal that is possibly served by the corresponding base station and
- applying beamforming towards a selected, base station-specific set of user terminals on the basis of an optimal user allocation, the optimal user allocation being determined according to the available quality information.
2 more elements
An apparatus, comprising:
- a processor configured to:
- obtain knowledge of at least one user allocation option regarding the apparatus in a distributed antenna system comprising at least two base stations, wherein a user allocation option comprises information representing at least one user terminal that is possibly served by the apparatus;
- determine quality information related to the at least one user allocation option regarding the apparatus, the quality information being represented in at least one real value;
- and
- apply beamforming towards a selected, base station-specific set of user terminals on the basis of an optimal user allocation, the optimal user allocation being determined according to the available quality information;
- wherein the processor is further configured to:
- determine the user allocation options comprising possible serving base stations for each user terminal within the distributed antenna system;
- determine the quality information related to at least one of the following:
- each possible user allocation option related to the possible serving base stations, and a communication link for each user terminal that is possibly served by a base station;
- and
- communicate to each base station of the distributed antenna system at least one user allocation option comprising information representing at least one user terminal that is possibly served by the corresponding base station;
- wherein the quality information comprises either a combined rate for each user allocation option regarding the apparatus or a channel gain for each communication link between the apparatus and the user terminals that are possibly served by apparatus, wherein the combined rate corresponds to all of the communication links between the apparatus and the user terminals in one user allocation option.
9 more elements
An apparatus comprising:
- processing means for obtaining, at a base station of a distributed antenna system comprising at least two base stations, knowledge of at least one user allocation option regarding the base station, wherein a user allocation option comprises information representing at least one user terminal that is possibly served by the apparatus;
- processing means for determining quality information related to the at least one user allocation option regarding the base station, the quality information being represented in at least one real value;
- and
- processing means for applying beamforming towards a selected, base station-specific set of user terminals on the basis of an optimal user allocation, the optimal user allocation being determined according to the available quality information;
- further comprising:
- determining, in a base station, the user allocation options comprising possible serving base stations for each user terminal within the distributed antenna system;
- determining quality information related to at least one of the following:
- each possible user allocation option related to the possible serving base stations, and a communication link for each user terminal that is possibly served by a base station;
- and
- communicating to each base station of the distributed antenna system at least one user allocation option comprising information representing at least one user terminal that is possibly served by the correspond ling base station;
- wherein the quality information comprises either a combined rate for each user allocation option regarding the base station or a channel gain for each communication link between the base station and the user terminals that are possibly served by the base station, wherein the combined rate corresponds to all of the communication links between the base station and the user terminals in one user allocation option.
8 more elements
A method, comprising:
- determining at least one user allocation option for a distributed antenna system comprising at least two base stations, wherein a user allocation option comprises information representing at least one user terminal that is possibly served by a base station;
- communicating the at least one user allocation option to at least one base station;
- receiving quality information related to the at least one user allocation option from the at least one base station, the quality information being represented in at least one real value;
- and
- determining an optimal user allocation for the at least one base station on the basis of the received quality information;
- and
- communicating the optimal user allocation to the at least one base station;
- further comprising:
- determining, in a base station, the user allocation options comprising possible serving base stations for each user terminal within the distributed antenna system;
- determining quality information related to at least one of the following:
- each possible user allocation option related to the possible serving base stations, and a communication link for each user terminal that is possibly served by a base station;
- and
- communicating to each base station of the distributed antenna system at least one user allocation option comprising information representing at least one user terminal that is possibly served by the corresponding base station;
- wherein the quality information comprises either a combined rate for each user allocation option regarding the base station or a channel gain for each communication link between the base station and the user terminals that are possibly served by the base station, wherein the combined rate corresponds to all of the communication links between the base station and the user terminals in one user allocation option.
11 more elements
An apparatus, comprising a processor configured to:
- determine at least one user allocation option for a distributed antenna system comprising at least two base stations, wherein a user allocation option comprises information representing at least one user terminal that is possibly served by a base station;
- the apparatus further comprising an interface configured to:
- communicate the at least one user allocation option to at least one base station;
- receive quality information related to the at least one user allocation option from the at least one base station, the quality information being represented in at least one real value;
- and the processor being further configured to:
- determine an optimal user allocation for the at least one base station on the basis of the received quality information;
- and the interface being further configured to:
- communicate the optimal user allocation to the at least one base station;
- the interface further configured to:
- determine, in a base station, the user allocation options comprising possible serving base stations for each user terminal within the distributed antenna system;
- determine quality information related to at least one of the following:
- each possible user allocation option related to the possible serving base stations, and a communication link for each user terminal that is possibly served by a base station;
- and
- communicate to each base station of the distributed antenna system at least one user allocation option comprising information representing at least one user terminal that is possibly served by the corresponding base station;
- wherein the quality information comprises either a combined rate for each user allocation option regarding the base station or a channel gain for each communication link between the base station and the user terminals that are possibly served by the base station, wherein the combined rate corresponds to all of the communication links between the base station and the user terminals in one user allocation option.
12 more elements
An apparatus, comprising:
- processing means for determining at least one user allocation option for a distributed antenna system comprising at least two base stations, wherein a user allocation option comprises information representing at least one user terminal that is possibly served by a base station;
- communication means for communicating the at least one user allocation option to at least one base station;
- receiving means for receiving quality information related to the at least one user allocation option from the at least one base station, the quality information being represented in at least one real value;
- and
- processing means for determining an optimal user allocation for the at least one base station on the basis of the received quality information;
- the communication means further comprising means for communicating the optimal user allocation to the at least one base station;
- the processing means further comprising means for determining, in a base station, the user allocation options comprising possible serving base stations for each user terminal within the distributed antenna system;
- the processing means further comprising means for determining quality information related to at least one of the following:
- each possible user allocation option related to the possible serving base stations, and a communication link for each user terminal that is possibly served by a base station;
- and
- the communication means further comprising means for communicating to each base station of the distributed antenna system at least one user allocation option comprising information representing at least one user terminal that is possibly served by the corresponding base station;
- wherein the quality information comprises either a combined rate for each user allocation option regarding the base station or a channel gain for each communication link between the base station and the user terminals that are possibly served by the base station, wherein the combined rate corresponds to all of the communication links between the base station and the user terminals in one user allocation option.
9 more elements
Dependencies are inferred from the claim text.