Macrocell-microcell communication system with minimal mobile channel hand-off
First Claim
1. A mobile communication system wherein a service area of mobile communication is divided into a plurality of macrocell zones each composed of a plurality of microcell zones, a microcell base station having a transmitting and receiving antenna and a power amplifier disposed in each of said microcell zones, microcell base stations in respective macrocell zones and a macrocell base station supervising them being interconnected via terrestrial links or radio links, said macrocell base station comprising a plurality of MODEMs corresponding to said microcell base stations placed under the supervision of said macrocell base station, and said macrocell base station processes signals which are transmitted from and received by all of said microcell base stations,said mobile communication system having different communication channels assigned to individual mobile stations in each of said macrocell zones;
- no channel handover takes place even when each of said mobile stations moves from one of said microcell zones to another while said links are switched at said macrocell base station on at basis of a received level from said mobile station;
only when each of said mobile stations moves from one of said macrocell zones to another, a mobile network control center for mobile communication, supervising said plurality of macrocell base stations, manages channel handover, said mobile network control center for mobile communication solely supervising channel assignment to respective mobile stations;
different channels being assigned to individual mobile stations in said plurality of macrocell zones;
when each of said mobile stations moves from one of said macrocell zones to another, if all channels are not already assigned, no channel handover takes place; and
only when all the channels are already assigned, a channel used by one of said mobile stations in a macrocell zone remotest from that where any of said mobile stations requesting channel assignment or in a macrocell zone to which said requesting mobile station is least likely to move is assigned to said channel requesting mobile station.
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Accused Products
Abstract
A mobile communication system is disclosed which precludes the necessity for mobile station to perform processing for microcell zone switching even when it moves from one microcell zone to another and which permits high-speed microcell zone handover. The service area of mobile communication is split into a plurality of macrocells; the macrocells are each subdivided into a plurality of microcells; a microcell base station equipped with a transmitting and receiving antenna and a power amplifier is installed in each microcell; a different communication channel is assigned to individual mobile station in the macrocell; even when the mobile station moves from one microcell to another, no channel handover takes place; and only when the mobile station moves from one macrocell to another, a mobile network control center which supervises the macrocell base stations effects channel handover.
150 Citations
4 Claims
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1. A mobile communication system wherein a service area of mobile communication is divided into a plurality of macrocell zones each composed of a plurality of microcell zones, a microcell base station having a transmitting and receiving antenna and a power amplifier disposed in each of said microcell zones, microcell base stations in respective macrocell zones and a macrocell base station supervising them being interconnected via terrestrial links or radio links, said macrocell base station comprising a plurality of MODEMs corresponding to said microcell base stations placed under the supervision of said macrocell base station, and said macrocell base station processes signals which are transmitted from and received by all of said microcell base stations,
said mobile communication system having different communication channels assigned to individual mobile stations in each of said macrocell zones; -
no channel handover takes place even when each of said mobile stations moves from one of said microcell zones to another while said links are switched at said macrocell base station on at basis of a received level from said mobile station; only when each of said mobile stations moves from one of said macrocell zones to another, a mobile network control center for mobile communication, supervising said plurality of macrocell base stations, manages channel handover, said mobile network control center for mobile communication solely supervising channel assignment to respective mobile stations; different channels being assigned to individual mobile stations in said plurality of macrocell zones; when each of said mobile stations moves from one of said macrocell zones to another, if all channels are not already assigned, no channel handover takes place; and only when all the channels are already assigned, a channel used by one of said mobile stations in a macrocell zone remotest from that where any of said mobile stations requesting channel assignment or in a macrocell zone to which said requesting mobile station is least likely to move is assigned to said channel requesting mobile station. - View Dependent Claims (2, 3, 4)
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Specification