Handover with fast moving mobile station detection between a microcell and a macrocell

Claim 3

The method as claimed in claim 1, further comprising: assigning at least two groups of neighboring cells to all microcells which have the assigned time limit, each of said groups of neighboring cells including at least one neighboring cell, and recognizing the mobile station as fast in the microcell, if the time measured is shorter than said time limit, and, if the mobile station has entered the microcell from one group of neighboring cells and exited from the microcell to a second group of neighboring cells.

Claim 4

The method as claimed in claim 2, further comprising: measuring the time between the entry of a mobile station to and its exit from a cell in N consecutive microcells, and handing over of a mobile station using a microcell network to use a macrocell network, if the mobile station is recognized as being fast in P microcells, in which N and P are possible integers, and N≧P.

Claim 5

The method as claimed in claim 1 further comprising: measuring the time between the entry of a mobile station to and its exit form a cell in N consecutive microcells, and handing over of a mobile station using a microcell network to use a macrocell network, if the mobile station is recognized as being fast in P microcells, in which N and P are positive integers, and N≧P.

Claim 6

A cellular mobile system comprising: a plurality of mobile stations some of which have a relatively lower transmitting power and speed, and others of which have a relatively higher transmitting power and speed, a microcell network primarily used by those of said mobile stations which have a relatively lower transmitting power and speed, said macrocell network comprising a plurality of microcells, a macrocell network geographically at least partly overlaying said microcell network, and being primarily used by those of said mobile stations which have a relatively higher transmitting power and speed, at least some of said microcells being assigned at least two groups of neighboring cells each group having at least one neighboring cell, at least some of said microcells being assigned a predetermined threshold value for the time a respective mobile station is registered to the respective microcell, said system being arranged such that a respective mobile station primarily using said microcell network can be handed over to said macrocell network, if the respective mobile station moves from one group of neighboring cells relative to one said microcell and, further, to a second group of neighboring cells with such high speed that the time of registration in a microcell is, in a predetermined share of said microcells through which the mobile station moves, shorter than the said predetermined threshold value in each respective microcell.

Claim 7

A cellular mobile system comprising: a plurality of mobile stations some of which have a relatively lower transmitting power and speed, and others of which have a relatively higher transmitting power and speed, a microcell network primarily used by those of said mobile stations which have a relatively lower transmitting power and speed, said macrocell network comprising a plurality of microcells, a macrocell network geographically at least partly overlaying said microcell network, and being primarily used by those of said mobile stations which have a relatively higher transmitting power and speed, at least some of said microcells being assigned at least two groups of neighboring cells each group having at least one neighboring cell, at least some of said microcells being assigned a predetermined threshold value for the time a respective mobile station is registered to the respective microcell, said system being arranged such that a respective mobile station primarily using said microcell network can be handed over to said macrocell network, if the respective mobile station moves from one group of neighboring cells relative to one said microcell and, further, to a second group of neighboring cells with such high speed that the time of registration in a microcell is, in a predetermined share of said microcells through which the mobile station moves, shorter than the said predetermined threshold value in each respective microcell.

Claim 8

The mobile system according to claim 5, wherein: each respective said mobile station is arranged to be handed over to said macrocell network, if the time of registration of the respective mobile station in P cells of N consecutive microcells is shorter than said predetermined threshold value, N and P being positive integers, and N≧P.