초록 ▼

The present invention provides a method for improving the communication coverage in a multi-cell communication system (100) which employs neighbor cell lists. A cell site (114) provides a communication unit (128) within its cell (112) with communication and a neighbor cell list. The neighbor cell li

The present invention provides a method for improving the communication coverage in a multi-cell communication system (100) which employs neighbor cell lists. A cell site (114) provides a communication unit (128) within its cell (112) with communication and a neighbor cell list. The neighbor cell list (200) informs the communication unit of other cells which are possible hand-off targets. When the fixed network equipment (FNE) detects that a particular communication unit (128) has entered another cell and/or needs to hand-off its communication to another cell site but has been denied, the cell site (114) sends the communication unit the neighbor cell list related to the new cell. With a new neighbor cell list (300), the communication unit (128) can now attempt to maintain its communication by handing-off to cells unknown before. In this manner the effective communication coverage of the system is improved.

대표청구항 ▼

[ We claim:] [1.] In a multi-cell communication system, a method of improving communication coverage, comprising:providing a first neighbor cell list to a communication unit wherein the communication unit is engaged in a comnmunication on a channel in a first cell;determining periodically a geograph

[ We claim:] [1.] In a multi-cell communication system, a method of improving communication coverage, comprising:providing a first neighbor cell list to a communication unit wherein the communication unit is engaged in a comnmunication on a channel in a first cell;determining periodically a geographical location of the communication unit to a greater specificity than that of a cell site service coverage area;determining that the first neighbor cell list no longer relates to a current geographical location of the communication unit that is determined to a greater specificity than that of a cell site service coverage area;repeatedly determining that the communication unit needs to hand-off from the channel in the first cell to a channel in a second cell;repeatedly denying the communication unit access to the channel in the second cell to produce a quantity of hand-off denials; andproviding the communication unit with a second neighbor cell list related to the current geographical location of the communication unit, wherein the step of providing the communication unit with a second neighbor cell list comprises the step of providing the communication unit with a second neighbor cell list when the first neighbor cell list no longer relates to a current geographical location of the communication unit and the quantity of hand-off denials reaches a threshold.