Prioritization of neighboring cells

Claim 3

The method of claim 1 wherein the step of assigning the measurement classification designations comprises the substeps of assigning the neighboring cells to one of not less than three different measurement classifications.

Claim 4

The method of claim 1 wherein the step of assigning the priority level comprises assigning a priority to one of not less than eight priority levels.

Claim 5

The method of claim 1 wherein the step of generating a measurement list comprises including in the measurement list a neighboring cell having an assigned first designated class without regard to an RF signal strength of the serving cell, and including in the measurement list at least one cell of a second designated class at times when a measurement threshold of the designated cell is greater than the RF signal strength of the serving cell.

Claim 6

The method of claim 1 wherein the step of generating a measurement list comprises including in the measurement list a cell of one of the plurality of designated measurement classes at times when the cell has a measurement threshold greater than the RF signal strength of the serving cell, and including in the measurement list a cell of another of the plurality of designated classes at times when the RF signal strength of the serving cell is less than the critical threshold of the designated cell.

Claim 7

The method of claim 1 wherein the step of generating the measurement list comprises including cells of one of the assigned measurement classes to the list in response to activation of a communication channel in the serving cell.

Claim 8

The method of claim 1 wherein the neighboring cells are selected for the measurement list from scanning receivers; and the scanning receiver scans neighboring cells in descending order of importance.

Claim 9

A cellular communication system having a serving cell for communicating with a mobile unit and a plurality of neighboring cells capable of communicating with the mobile unit as it leaves the serving cell, the system comprising: a plurality of individual overlapping cells, each of said plurality of cells constituting one of a plurality of neighboring cells to another cell, each of said plurality of neighboring cells having one of a plurality of measurement classes; each of said plurality of neighboring cells having an assigned priority level independent of the RF signal strength of the cell; means for generating a measurement list of the neighboring cells in accordance with the corresponding measurement class; means for selecting candidate cells for handoff from the generated measurement list; means for determining the difference between a maximum priority level and the assigned priority level of each of the neighboring cells; means for normalizing the RF signal strength of each selected neighboring cell in accordance with attenuation parameters of the mobile unit; and means for adjusting the normalized RF signal strength of each cell in accordance with the determined difference multiplied by a number of decibels for each priority level difference.

Claim 10

A cellular communication system having a serving cell for communicating with a mobile unit and a plurality of neighboring cells capable of communicating with the mobile unit as it leaves the serving cell, the system comprising: a plurality of individual overlapping cells, each of said plurality of cells constituting one of a plurality of neighboring cells to another cell, each of said plurality of neighboring cells having one of a plurality of measurement classes; each of said plurality of neighboring cells having an assigned priority level independent of the RF signal strength of the cell; means for generating a measurement list of the neighboring cells in accordance with the corresponding measurement class; means for selecting candidate cells for handoff from the generated measurement list; means for determining the difference between a maximum priority level and the assigned priority level of each of the neighboring cells; means for normalizing the RF signal strength of each selected neighboring cell in accordance with attenuation parameters of the mobile unit; and means for adjusting the normalized RF signal strength of each cell in accordance with the determined difference multiplied by a number of decibels for each priority level difference.

Claim 11

The system of claim 8 wherein the neighboring cells have one of not less than three different measurement classes.

Claim 12

The system of claim 8 wherein each of said plurality of neighboring cells has one of not less than eight priority levels.

Claim 13

The system of claim 8 wherein the means for generating a measurement list includes means for including cells in the measurement list of the plurality of neighboring cells having a first of the plurality of measurement classes without regard to an RF signal strength of the serving cell, and including means for including in the measurement list one of the plurality of neighboring cells having another of the plurality of measurement classes at times when a measurement threshold of the neighboring cell is greater than the RF signals strength of the serving cell.

Claim 14

The system of claim 8 wherein the means for generating a measurement list includes means for including in the measurement list a neighboring cell of one of the plurality of measurement classes at times when the neighboring cell has a measurement threshold greater than the RF signal strength of the serving cell, and including means for including in the measurement list a neighboring cell of another of the plurality of measurement classes at times when the RF signal strength of the serving cell is less than the critical threshold of the neighboring cell.

Claim 15

The system of claim 8 wherein the means for generating a measurement list includes means for commencing the generation of the list upon activation of a channel in the serving cell.