Mobile communication system enabling efficient use of small-zone base stations
First Claim
Patent Images
1. A mobile communication system comprising:
- a plurality of radio base stations forming respective radio zones and effecting a radio channel setting control in accordance with a predetermined procedure; and
a mobile station selecting, as a wait zone, one of the radio zones that satisfies a criteria demanded by the predetermined procedure, and receiving communication service via the selected wait zone, each of the radio base stations comprising;
traffic control means for setting a traffic distribution for the plurality of radio zones; and
announcing means for generating announcement information including the order of priority assigned to the plurality of radio zones, the order of priority being assigned in accordance with a probability density given to each of the plurality of radio zones under the distribution set by the traffic control means, and for transmitting announcement information to the radio zone formed by the radio station to which the announcing means belongs, the mobile station comprising;
announcement information receiving means for receiving the announcement information transmitted by the announcing means in accordance with the predetermined procedure; and
wait control means for selecting one of the radio zones as a wait zone, the radio zone to which a highest priority is assigned being a first candidate for selection by the wait control means.
0 Assignments
0 Petitions
Accused Products
Abstract
A mobile communication system includes a plurality of radio base stations forming respective radio zones and a mobile station selecting a wait zone and a base station to which a request for a message channel is to be issued. Each of the plurality of radio base stations is assigned an order of priority. Information relating to the order of priority is used by the mobile station to select a wait zone and a base station to which a request for a message channel is to be issued.
-
Citations
46 Claims
-
1. A mobile communication system comprising:
-
a plurality of radio base stations forming respective radio zones and effecting a radio channel setting control in accordance with a predetermined procedure; and
a mobile station selecting, as a wait zone, one of the radio zones that satisfies a criteria demanded by the predetermined procedure, and receiving communication service via the selected wait zone, each of the radio base stations comprising;
traffic control means for setting a traffic distribution for the plurality of radio zones; and
announcing means for generating announcement information including the order of priority assigned to the plurality of radio zones, the order of priority being assigned in accordance with a probability density given to each of the plurality of radio zones under the distribution set by the traffic control means, and for transmitting announcement information to the radio zone formed by the radio station to which the announcing means belongs, the mobile station comprising;
announcement information receiving means for receiving the announcement information transmitted by the announcing means in accordance with the predetermined procedure; and
wait control means for selecting one of the radio zones as a wait zone, the radio zone to which a highest priority is assigned being a first candidate for selection by the wait control means.
-
-
2. A mobile communication system comprising:
-
a plurality of radio base stations forming one or a plurality of radio zones and one or a plurality of small-scale radio zones, resulting in a hierarchy of overlapping radio zones, and effecting a radio channel setting control in accordance with a predetermined procedure; and
a mobile station accessing one of the radio zones formed by the respective one of the plurality of radio base stations, in accordance with a predetermined procedure, and receiving communication service via the accessed radio zone, each of the plurality of radio base stations comprising;
announcing means for transmitting announcement information which includes identification information for identifying radio channels assigned to respective radio zones and small-scale radio zones, via the a radio channel assigned to the radio zone formed by the radio base station to which the announcing means belongs, the identification information being arranged in the announcement information so as to correspond to the hierarchy of overlapping radio zones announcement information including a priority of the respective radio zones, the mobile station comprising;
announcement information receiving means for receiving the announcement information transmitted by the announcing means, in accordance with the procedure for radio channel setting control;
measuring means for measuring an electric field intensity for the a characteristic of a radio channel corresponding to the identification information included in the announcement information received by the announcement information receiving means a respective radio zone; and
wait control means for comparing an electric field intensity the measured by the measuring means characteristic with a preset threshold level, and designating a radio zone to which the radio channel lowest in the hierarchy is assigned as a wait zone in which to receive the communication service, on the condition that the electric field intensity measured by the measuring means exceeds the preset threshold level based upon the priority of the respective radio zones received from the announcement information and the comparison of the measured characteristic with the threshold level. - View Dependent Claims (3, 4, 5, 6, 7, 8)
-
-
9. A mobile communication system comprising:
-
a plurality of radio base stations forming one or a plurality of radio zones and one or a plurality of small-scale radio zones, resulting in a hierarchy of overlapping the radio zones having respective priorities, and effecting a radio channel setting control in accordance with a predetermined procedure; and
a mobile station accessing one of the radio zones formed by the respective one of the plurality of radio base stations, in accordance with a predetermined procedure, and receiving communication service via the accessed radio zone, each of the plurality of radio base stations comprising;
announcing means for transmitting announcement information which includes identification information for identifying the one or the plurality of radio zones and the one or the plurality of small-scale radio zones, via the radio channel assigned to the radio zone formed by the radio base station to which the announcing means belongs, the identification information being arranged in the announcement information according to respective positions in the hierarchy of overlapping the priorities of the radio zones, the mobile station comprising;
announcement information receiving means for receiving the announcement information transmitted by the announcing means, in accordance with the procedure for radio channel setting control;
measuring means for measuring an electric field intensity for the radio zone corresponding to the identification information included in the announcement information received by the announcement information receiving means a characteristic of respective radio zones; and
wait control means for comparing an electric field intensity the measured by the measuring means characteristic of the respective radio zones with a preset threshold level, and designating, as a wait zone in which to receive the communication service, a radio zone lowest in the hierarchy of overlapping zones on the condition that the electric field intensity measured by the measuring means exceeds the threshold level based upon the priority of the respective radio zones received from the announcement information and the comparison of the measured characteristic with the threshold level.
-
-
10. A mobile communication system comprising:
-
a plurality of radio base stations forming one or a plurality of radio zones and one or a plurality of small-scale radio zones, resulting in a hierarchy of overlapping zones , and effecting a radio channel setting control in accordance with a predetermined procedure; and
a mobile station accessing one of the radio zones formed by the respective one of the plurality of radio base stations, in accordance with a predetermined procedure, and receiving communication service via the accessed radio zone, each of the plurality of radio base stations comprising;
announcing means for transmitting announcement information which includes identification information for identifying radio channels for the one or the plurality of radio zones and the one or the plurality of small-scale radio zones, via the a radio channel assigned to the radio zone formed by the radio base station to which the announcing means belongs, the identification information being arranged in the announcement information according to respective positions in the hierarchy of overlapping zones announcement information also including priority information of the plurality of radio zones, the mobile station comprising;
announcement information receiving means for receiving the announcement information transmitted by the announcing means, in accordance with the procedure for radio channel setting control;
measuring means for measuring an electric field intensity for the a characteristic of respective radio channel corresponding to the identification information included in the announcement information received by the announcement information receiving means channels; and
wait control means for comparing an electric field intensity the measured by the measuring means characteristic with a preset threshold level, and based upon the comparison designating one of the radio channels, which is assigned to the radio zone lowest in the hierarchy and for which the control means has determined that the electric field intensity measured by the measuring means exceeds the preset threshold level, as a radio channel radio zones with the highest priority as first candidates via which to receive the communication service.
-
-
11. A mobile communication system comprising:
-
a plurality of radio base stations forming one or a plurality of radio zones and one or a plurality of small-scale radio zones, resulting in a hierarchy of overlapping zones, and effecting a radio channel setting control in accordance with a predetermined procedure; and
a mobile station accessing one of the radio zones formed by the respective one of the plurality of radio base stations, in accordance with a predetermined procedure, and receiving communication service via the accessed radio zone, each of the plurality of radio base stations comprising;
announcing means for transmitting announcement information which includes identification information for identifying the one or the plurality of radio zones and the one or the plurality of small-scale radio zones, via the radio channel assigned to the radio zone formed by the radio base station to which the announcing means belongs, the identification information being arranged in the announcement information according to respective positions in the hierarchy of overlapping zones, the mobile station comprising;
announcement information receiving means for receiving the announcement information transmitted by the announcing means, in accordance with the procedure for radio channel setting control;
measuring means for measuring an electric field intensity for the radio zone corresponding to the identification information included in the announcement information received by the announcement information receiving means; and
wait control means for comparing an electric field intensity measured by the measuring means with a preset threshold level, and designating, as a wait zone in which to receive the communication service, a radio zone identified by the identification information to be lowest in the hierarchy of overlapping zones, on the condition that the electric field intensity measured by the measuring means exceeds the threshold level.
-
-
12. A mobile communication system comprising:
-
a plurality of radio base stations forming one or a plurality of radio zones and one or a plurality of small-scale radio zones, resulting in a hierarchy of overlapping zones, and effecting a radio channel setting control in accordance with a predetermined procedure; and
a mobile station accessing one of the radio zones formed by the respective one of the plurality of radio base stations, in accordance with a predetermined procedure, and receiving communication service via the accessed radio zone, each of the plurality of radio base stations comprising;
announcing means for transmitting announcement information which includes first identification information for identifying a radio channel assigned to the radio zone formed by the radio base station to which the announcing means belongs, as well as including second identification information identifying the radio zones and the small-scale radio zones which overlap the radio zone formed by the radio base station to which the announcing means belongs, via the radio channel assigned to the radio zone formed by the radio base station to which the announcing means belongs, the second identification information being arranged in the announcement information according to respective positions in the hierarchy of overlapping zones, the mobile station comprising;
announcement information receiving means for receiving the announcement information transmitted by the announcing means, in accordance with the procedure for radio channel setting control;
measuring means for measuring an electric field intensity for the radio channel corresponding to the identification information included in the announcement information received by the announcement information receiving means; and
wait control means for comparing an electric field intensity measured by the measuring means with a preset threshold level, determining the radio channel which is identified by the associated second identification information, if available, to have a lowest hierarchical order, and designating, as a wait zone in which to receive the communication service, the radio zone to which the determined radio channel is assigned, on the condition that the electric field intensity measured by the measuring means exceeds the threshold level.
-
-
13. A mobile communication system comprising:
-
a plurality of radio base stations forming one or a plurality of radio zones and one or a plurality of small-scale radio zones, resulting in a hierarchy of overlapping zones, and effecting a radio channel setting control in accordance with a predetermined procedure; and
a mobile station accessing one of the radio zones formed by the respective one of the plurality of radio base stations, in accordance with a predetermined procedure, and receiving communication service via the accessed radio zone, each of the plurality of radio base stations comprising;
announcing means for transmitting announcement information which includes first identification information for identifying a radio channel assigned to a radio zone formed by the radio base station to which the announcing means belongs, as well as including second identification information identifying the radio zones and the small-scale radio zones which overlap the radio zone formed by the radio base station to which the announcing means belongs, over the radio zone formed by the radio base station to which the announcing means belongs, the second identification information being arranged in the announcement information according to respective positions in the hierarchy of overlapping zones, the mobile station comprising;
announcement information receiving means for receiving the announcement information transmitted by the announcing means, in accordance with the procedure for radio channel setting control;
measuring means for measuring an electric field intensity for the radio zone corresponding to the identification information included in the announcement information received by the announcement information receiving means; and
wait control means for comparing an electric field intensity measured by the measuring means with a preset threshold level, determining the radio zone corresponding to the radio channel which is identified by the associated second identification information, if available, to have a lowest hierarchical order, and designating the determined radio zone as a wait zone in which to receive the communication service on the condition that the electric field intensity measured by the measuring means exceeds the threshold level.
-
-
14. A mobile communication system comprising:
-
a plurality of radio base stations forming one or a plurality of radio zones and one or a plurality of small-scale radio zones, resulting in a hierarchy of overlapping zones, and effecting a radio channel setting control in accordance with a predetermined procedure ; and
a mobile station accessing one of the radio zones formed by the respective one of the plurality of radio base stations, in accordance with a predetermined procedure, and receiving communication service via the accessed radio zone, each of the plurality of radio base stations comprising;
announcing means for transmitting announcement information which includes a hierarchical (equal or subordinate) order priority of the radio zone formed by the plurality of radio base station to which the announcing means belongs with respect to the overlapping radio zones and small-scale radio zones, stations and which also includes identification information for identifying radio channels assigned to the radio zone formed by the radio base station to which the announcing means belongs, and the overlapping radio zones and small-scale radio zones, via the radio channel assigned to the radio zone formed by the radio base station to which the announcing means belongs, the mobile station comprising;
announcement information receiving means for receiving the announcement information transmitted by the announcing means, in accordance with the procedure for radio channel setting control, for extracting the identification information from the announcement information, and for determining the hierarchy priority of the radio zones to which the radio channels identified by the identification information are assigned of the plurality of radio base stations;
measuring means for measuring an electric field intensity for the radio channel corresponding to the identification information obtained by the announcement information receiving means a characteristic a received signal from respective radio base stations of the plurality of radio base stations; and
wait control means for comparing an electric field intensity the measured by the measuring means characteristic with a preset threshold level, and designating a radio zone to which the radio channel lowest in the hierarchy is assigned as a wait zone in which to receive the communication service, on the condition that the electric field intensity measured by the measuring means for the radio channel lowest in the hierarchy exceeds the preset threshold level based upon the comparison and the hierarchy priority.
-
-
15. A mobile communication system comprising:
-
a plurality of radio base stations forming one or a plurality of radio zones and one or a plurality of small-scale radio zones, resulting in a hierarchy of overlapping zones, and effecting a radio channel setting control in accordance with a predetermined procedure; and
a mobile station accessing one of the radio zones formed by the respective one of the plurality of radio base stations, in accordance with a predetermined procedure, and receiving communication service via the accessed radio zone, each of the plurality of radio base stations comprising;
announcing means for transmitting announcement information which includes a hierarchical (equal or subordinate) order of the radio zone formed by the radio base station to which the announcing means belongs with respect to the overlapping radio zones and small-scale radio zones, and which also includes identification information for identifying the radio zone formed by the radio base station to which the announcing means belongs and the overlapping radio zones and small-scale radio zones, over the radio zone formed by the radio base station to which the announcing means belongs, the mobile station comprising;
announcement information receiving means for receiving the announcement information transmitted by the announcing means, in accordance with the procedure for radio channel setting control, for extracting the identification information from the announcement information, and for determining the hierarchy of the radio zones corresponding to the identification information;
measuring means for measuring an electric field intensity for the radio zone corresponding to the identification information extracted by the announcement information receiving means 14g; and
wait control means for comparing an electric field intensity measured by the measuring means with a preset threshold level, and designating a radio zone lowest in the hierarchy determined by the announcement information receiving means as a wait zone in which to receive the communication service, on the condition that the electric field intensity measured by the measuring means for the radio zone lowest in the hierarchy exceeds the preset threshold level.
-
-
16. A mobile station comprising:
-
announcement information receiving means for receiving announcement information including orders of priority information assigned to radio zones formed by a plurality of radio base stations, the reception by the announcement information receiving means being conducted according to a descending order of preset traffic distribution and in accordance with a radio channel setting control procedure ;
wait means for determining whether the radio zone zones associated with the highest order of priority included in the announcement information received by the announcement information receiving means satisfies a criteria adapted for the radio channel setting control procedure, and for designating the a radio zone from among radio zones for which an affirmative answer is given as a wait zone; and
communication control means which receives communication service from the radio base station forming the radio zone designated by the wait means.
-
-
17. A mobile communication system comprising:
-
a plurality of base stations forming respective radio zones that overlap each other ;
a mobile station transportable between said radio zones;
whereineach of said plurality of base stations having;
announcing means for sending announcement information including an order of priority information of respective base stations of said plurality of base stations to the mobile station located in one of said radio zones, and said mobile station having;
a control means for selecting a base station from among said plurality of base stations, to which a request for a message channel is to be issued, based on the order of priority information of said plurality of base stations included in the announcement information transmitted from said plurality of base stations, rather than based on an order of respective received electric field intensities provided by the plurality of base stations and having a received signal characteristic being equal to or greater than a predetermined received electric field intensity threshold value. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
-
-
26. A mobile station for use in a mobile communication system, comprising:
control means for selecting a base station from among a plurality of base stations, to which a request for a message channel is to be issued, based on an order of a priority of said plurality of base stations, said priority information included in announcement information received from said plurality of base stations, rather than based on an order of respective received electric field intensities provided by the plurality of base stations and said selected base station having a signal characteristic being equal to or greater than a predetermined received electric field intensity value. - View Dependent Claims (27, 28, 29, 30, 31, 32)
-
33. A base station forming a radio zone that overlaps radio zones formed by other base stations of a plurality of base stations in a mobile communication system having a plurality of base stations;
- comprising;
announcing means for sending announcement information including an order of a priority of respective base stations of said plurality of base stations constituting the mobile communication system to a mobile station located in one of the radio zones, a sending candidate base station being selected by a mobile station from among the plurality of base stations, to which a request for a message channel is to be issued, based on the order of priority of the plurality of base stations included in the announcement information, rather than based on an order of respective received electric field intensities provided by the plurality of base stations and base stations having a received signal criteria being equal to or greater than a predetermined received electric field intensity value. - View Dependent Claims (34, 35)
- comprising;
-
36. A mobile station for use in a mobile communication system including a plurality of base stations which respectively transmit announcement information including an order of priority of said plurality of base stations, said mobile station comprising:
control means for selecting a base station from among the plurality of base stations, to which a request for a message channel is to be issued, based on said order of priority of said plurality of base stations included in said announcement information from said plurality of base stations, rather than based on an order of respective received electric field intensities provided by the plurality of base stations and being equal to or greater than a predetermined received electric field intensity.
-
37. A radio communication unit in a mobile communication system including a plurality of base stations, the radio communication unit comprising:
-
a receiver receiving system information from one or more base stations, the system information including a respective priority of the one or more base stations;
a measuring unit measuring a characteristic of received signals from one or more base stations; and
a controller determining one or more base stations where the measured characteristic meets a predetermined criteria and selecting a base station with the highest priority from among the base stations meeting the predetermined criteria. - View Dependent Claims (38, 39)
-
-
40. A method in a mobile radio communication unit of a mobile communication system including a plurality of base stations, which transmit announcement information including a priority of said plurality of base stations, the method comprising:
-
measuring a characteristic of received signals from one or more base stations;
determining if the measured characteristic meets a predetermined criteria;
receiving priority information from one or more base stations, the priority information including a respective priority of the one or more base stations; and
selecting a base station with the highest priority from among the base stations meeting the predetermined criteria. - View Dependent Claims (41)
-
-
42. A mobile communication system having a plurality of radio base stations forming respective radio zones and a mobile station accessing a radio base station and receiving communication service via the accessed base station, the system comprising:
-
transmission/reception unit transmitting announcement information which includes identification information for identifying radio channels assigned to respective radio zones and priority information of respective radio base stations;
a receiver receiving the announcement information from one or more base stations and the priority information of respective radio base stations;
a measuring unit measuring a characteristic of received signals from one or more base stations; and
a controller determining one or more base stations where the measured characteristic meets a predetermined criteria and selecting a base station with the highest priority from among the base stations meeting the predetermined criteria.
-
-
43. A mobile station for use in a mobile communication system including a plurality of base stations which respectively transmit announcement information including a priority of said plurality of base stations, said mobile station comprising:
a controller selecting a base station from among the plurality of base stations based on said priority of base stations having a received signal criteria being equal to or greater than a value.
-
44. A mobile station for use in a mobile communication system including a plurality of radio zones, said mobile station comprising:
-
a receiver receiving priority information about said radio zones from a base station forming any one of said radio zones, a controller selecting a radio zone from among the radio zones based on said priority information.
-
-
45. A base station for use in a mobile communication system, comprising:
a transmitter transmitting a broadcast signal including priority information relating to said base station and an adjacent base station for zone selection in a mobile station.
-
46. A mobile communication system comprising:
-
a plurality of radio base stations forming respective radio zones and effecting a radio channel setting control in accordance with a predetermined procedure; and
a mobile station selecting, as a wait zone, one of the radio zones that satisfies a criteria demanded by the predetermined procedure, and receiving communication service via the selected wait zone, each of the radio base stations comprising;
announcing means for generating announcement information including the order of priority assigned to the plurality of radio zones, and for transmitting announcement information to the radio zone formed by the radio station to which the announcing means belongs, the mobile station comprising;
announcement information receiving means for receiving the announcement information transmitted by the announcing means in accordance with the predetermined procedure; and
wait control means for selecting one of the radio zones as a wait zone, the radio zones to which a highest priority is assigned being first candidates for selection by the wait control means.
-
Specification