Method and apparatus for interference management in heterogenous networks
First Claim
1. A method in a wireless communication system comprising at least one heterogeneous cell having a serving macro cell base station and at least one small cell subtended within a coverage area of the serving macro cell base station, the heterogeneous cell constituting a macro cell for subtended small cells, the method comprising:
- providing in the macro cell at least one publicly-accessible small cell having a coverage area corresponding to a coverage area of the at least one small cell;
providing a first communication path between the at least one publicly-accessible small cell and a mobile terminal; and
providing a second communication path between the serving macro cell base station and the mobile terminal,wherein forward link transmissions to the mobile terminal are performed over one of the first and the second communication paths and reverse link transmissions from the mobile terminal are performed over the other one of the first and the second communication paths based on a distance measured between the publicly-accessible small cell and the serving macro cell base station.
4 Assignments
0 Petitions
Accused Products
Abstract
A method is provided a wireless system for providing small “guard” cells in a heterogeneous network at locations proximate to privately-maintained HeNB (or femto) cells in the heterogeneous network. More particularly, the methodology of the invention addresses the problem of a mobile user in a heterogeneous network located nearby to a privately maintained HeNB cell in the heterogeneous network, and the inherent interference created for the HeNB cell by the necessity of the mobile user having to transmit and receive communications from a distant public macro eNB. By deploying small public “guard” cells in the macro cell proximate to the private HeNB cells, such a public mobile terminal is enabled to communicate with the public small cell at generally lower power than would have been necessary for communication with the distant macro eNB, with a resulting reduction in interference for the nearby HeNB cell. The FL interference between the macro cell and the HeNBs is also mitigated.
-
Citations
20 Claims
-
1. A method in a wireless communication system comprising at least one heterogeneous cell having a serving macro cell base station and at least one small cell subtended within a coverage area of the serving macro cell base station, the heterogeneous cell constituting a macro cell for subtended small cells, the method comprising:
-
providing in the macro cell at least one publicly-accessible small cell having a coverage area corresponding to a coverage area of the at least one small cell; providing a first communication path between the at least one publicly-accessible small cell and a mobile terminal; and providing a second communication path between the serving macro cell base station and the mobile terminal, wherein forward link transmissions to the mobile terminal are performed over one of the first and the second communication paths and reverse link transmissions from the mobile terminal are performed over the other one of the first and the second communication paths based on a distance measured between the publicly-accessible small cell and the serving macro cell base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A wireless communication system including at least one heterogeneous cell having a serving macro cell base station and a plurality of small cells subtended within a coverage area of the serving macro cell base station, the heterogeneous cell constituting a macro cell for the plurality of subtended small cells, the wireless communication system comprising:
-
at least one publicly-accessible small cell having a coverage area corresponding to a coverage area of at least one small cell; a first communication path between the at least one publicly-accessible small cell and a mobile terminal; and a second communication path between the serving macro cell base station and the mobile terminal, wherein forward link transmissions to the mobile terminal are performed over one of the first and the second communication paths and reverse link transmissions from the mobile terminal are performed over the other one of the first and the second communication paths based on a distance measured between the publicly-accessible small cell and the serving macro cell base station. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification