METHOD FOR CONTROLLING INTERFERENCE GENERATED BY A MOBILE STATION ON NEIGHBOR BASE STATIONS
First Claim
Patent Images
1. Method for controlling the interference level generated by a mobile station communicating with a current base station on at least a neighbor base station in a wireless communication system, comprising at least steps:
- A;
selecting at least one neighbor base station;
B;
estimating a first attenuation value representative of signal attenuation level between the mobile station and the current base station, and at least a second attenuation value correlated to one neighbor base station selected in step A and representative of signal attenuation level between the mobile station and the correlated neighbor base station;
C′
;
estimating a first received signal strength by measuring power level of signal received by the current base station from the mobile station;
C″
;
estimating an interference level from the relation;
I_level=BS0—
RSS+L0−
L, in whichI_level is the interference level,BS0_RSS is the first received signal strength,L0 is the first attenuation value, andL is one second attenuation value estimated in step B,D;
comparing the interference level to a reference interference level, and according to the result of the comparison, sending to the mobile station at least information relative to a maximum transmitted signal strength for the mobile station.
2 Assignments
0 Petitions
Accused Products
Abstract
An embodiment of a method for controlling the interference level generated by a mobile station comprising at least steps:
- selecting at least one neighbor base station;
- estimating a first attenuation value between the mobile station and a current base station, and at least a second attenuation value between the mobile station and the neighbor base station;
- estimating an interference level:
I_level=BS0—RSS+L0−L,
- BS0_RSS being a first received signal strength at the base station, from the mobile station,
- L0 being the first attenuation value, and
- L being one second attenuation value estimated in step B,
- comparing the interference level to a reference interference level, and according to the result of the comparison, sending to the mobile station at least information relative to a maximum transmitted signal strength.
-
Citations
5 Claims
-
1. Method for controlling the interference level generated by a mobile station communicating with a current base station on at least a neighbor base station in a wireless communication system, comprising at least steps:
-
A;
selecting at least one neighbor base station;B;
estimating a first attenuation value representative of signal attenuation level between the mobile station and the current base station, and at least a second attenuation value correlated to one neighbor base station selected in step A and representative of signal attenuation level between the mobile station and the correlated neighbor base station;C′
;
estimating a first received signal strength by measuring power level of signal received by the current base station from the mobile station;C″
;
estimating an interference level from the relation;
I_level=BS0—
RSS+L0−
L,in which I_level is the interference level, BS0_RSS is the first received signal strength, L0 is the first attenuation value, and L is one second attenuation value estimated in step B, D;
comparing the interference level to a reference interference level, and according to the result of the comparison, sending to the mobile station at least information relative to a maximum transmitted signal strength for the mobile station.- View Dependent Claims (2, 3, 4, 5)
wherein in step C″
, L is the lowest second attenuation value among the plurality of estimated second attenuation values.
-
-
3. Method according to claim 1, wherein the first attenuation value is estimating from the relation:
-
L0=BS0—
TSS−
MS—
RSS0,in which L0 is the first attenuation value, BS0_TSS is a first transmitted signal strength representative of power of signal transmitted by the current base station, and MS_RSS0 is a second received signal strength representative of power of signal received by the mobile station from the current base station.
-
-
4. Method according to claim 1, wherein each second attenuation value is estimated from the relation:
-
Li=BSi—
TSS−
MS—
RSSi,in which Li is the second attenuation value, BSi_TSS is a second transmitted signal strength representative of power of signal transmitted by the correlated neighbor base station, and MS_RSSi is a third received signal strength representative of power of signal received by the mobile station from the correlated neighbor base station.
-
-
5. Method according to claim 1, wherein
the current base station performs steps A, C′ - , C″ and
D, and sends to the mobile station information relative to neighbor base stations selected in step A;the mobile station performs the step B, receives information relative to at least the first and second transmitted signal strengths BS0_TSS, BSi_TSS, sends the first and at least the second attenuation level of step B to the current base station; the transmitted signal strength MS_TSS of the mobile station is set according to the maximum transmitted signal strength.
- , C″ and
Specification