Channel allocation using enhanced pathloss estimates
AssigneeTelefonaktiebologet LM Ericsson (publ)
InventorWalter Muller
Life of this patent
Estimating the term…
Abstract
A method and apparatus for channel allocation using pathloss estimates. Pathloss values between mobile stations located in one cell and base stations located in surrounding cells are calculated. Using the calculated pathloss values the system can determine the amount of interference which will be caused to transmissions in the surrounding base stations by allocating a certain channel to a base station located in the one cell. The system also can determine the source of the interference and use such a determination in the allocation of channels.
Claims13
In a cellular communication system a method for cell planning and channel allocation comprising the steps of:
- determining a pathloss value between a mobile station located in a first cell and a base station located in a second cell;
- determining an interference value for interference caused by said base station located in said second cell to a transmission between said mobile station and a base station located in said first cell;
- and
- allocating a channel to a group of channels assigned to said base station located in said first cell based upon said interference determination and said pathloss value, wherein said cellular communication system uses a CDMA transmission scheme, and wherein said second cell is added to a neighboring cell list for said mobile station depending upon said pathloss value.
In a cellular communication system a method for transmission power level selection for a channel assigned to a base station located in a first cell comprising the steps of:
- determining a pathloss value between a mobile station located in said first cell and a base station located in a second cell;
- determining an interference caused by said base station located in said second cell to a transmission between said mobile station and said base station located in said first cell;
- and
- allocating a transmission power level to said transmission between said mobile station and said base station located in said first cell based upon said interference determination and said pathloss value, wherein said cellular communication system uses a CDMA transmission scheme, and wherein said second cell is added to a neighboring cell list for said mobile station depending upon said pathloss value.
In a cellular communication system a method for cell planning and channel allocation comprising the steps of:
- determining a first pathloss value between a mobile station, located in a first cell and transmitting on a first channel to a first base station, and a second base station;
- determining a second pathloss value between said mobile station and a third base station;
- determining a source of interference to said transmission based on said pathloss values, said first channel, and the channels which are allocated to said second and third base stations.
In a cellular communication system an apparatus used for cell planning and channel allocation comprising:
- means for determining a pathloss value between a mobile station located in a first cell and a base station located in a second cell;
- means for determining an interference value for interference caused by said base station located in said second cell to a transmission between said mobile station and a base station located in said first cell;
- and
- means for allocating a channel to a group of channels assigned to said base station located in said first cell based upon said interference determination and said pathloss value, wherein said cellular communication system uses a CDMA transmission scheme, and wherein said second cell is added to a neighboring cell list for said mobile station depending upon said pathloss value.
In a radiocommunications system, a method for cell planning and channel allocation comprising the steps of:
- identifying a base station located in a first cell by connection specific information;
- instructing a mobile station in a second cell to search for and synchronize to a transmission using said connection specific information;
- reporting, by said mobile station, signal strength of said transmission, average power level used by said mobile station during a measurement period, and average signal level received from said first cell;
- and
- calculating pathloss between said first cell and said second cell.
Dependencies are inferred from the claim text.