CA2489812A1 - Mobile radio communication system, mobile station, and method for controlling diversity hand-over branch - Google Patents

Mobile radio communication system, mobile station, and method for controlling diversity hand-over branch Download PDF

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Publication number
CA2489812A1
CA2489812A1 CA002489812A CA2489812A CA2489812A1 CA 2489812 A1 CA2489812 A1 CA 2489812A1 CA 002489812 A CA002489812 A CA 002489812A CA 2489812 A CA2489812 A CA 2489812A CA 2489812 A1 CA2489812 A1 CA 2489812A1
Authority
CA
Canada
Prior art keywords
mobile station
branch
switching center
base station
candidates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002489812A
Other languages
French (fr)
Other versions
CA2489812C (en
Inventor
Tomoyuki Ohtani
Motoshi Tamura
Takaaki Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Docomo Inc
Original Assignee
Ntt Mobile Communications Networks Inc.
Tomoyuki Ohtani
Motoshi Tamura
Takaaki Sato
Ntt Mobile Communications Network Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ntt Mobile Communications Networks Inc., Tomoyuki Ohtani, Motoshi Tamura, Takaaki Sato, Ntt Mobile Communications Network Inc. filed Critical Ntt Mobile Communications Networks Inc.
Priority claimed from CA002262960A external-priority patent/CA2262960C/en
Publication of CA2489812A1 publication Critical patent/CA2489812A1/en
Application granted granted Critical
Publication of CA2489812C publication Critical patent/CA2489812C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/38—Reselection control by fixed network equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A branch candidate selecting method by a mobile station and a diversity handover control method on a network side in DHO performance are provided which consider a maximum cable branch number and a maximum radio branch number of the mobile station, when the mobile station detects a plurality of addition branch candidates and deletion branch candidates. The mobile station inserts a plurality of addition branch candidates and deletion branch candidates, that is, all the DHO candidates into one handover trigger signal, and notifies the network. The addition branch candidates are put into addition information parameters in the handover trigger signal, and the deletion branch candidates are put into deletion information parameters. To simplify processing on the network side, the network side separates the addition branch candidates from the deletion branch candidates, and carries out sequential processing of them independently.

Claims (29)

1. A mobile communication system comprising a mobile station, a base station connected to the mobile station, and a switching center connected to the base station, wherein said mobile station notifies said switching center of information on one or more addition branch candidates between said mobile station and said base station, and of information indicative of precedence of said addition branch candidates; and said switching center performs handover control in accordance with the information notified.
2. A mobile communication system including a mobile station, a base station connected to the mobile station, and a switching center connected to the base station, wherein information transmitted from said mobile station to said switching center includes information on one or more deletion branch candidates between said mobile station and said base station.
3. The mobile communication system as claimed in claim 1, wherein information transmitted from said mobile station to said switching center further includes information on one or more communicating branches between said mobile station and said base station.
4. The mobile communication system as claimed in claim 1, wherein said switching center establishes a communication branch between said mobile station and said switching center using information on one or more communicating branches between said mobile station and said base station, the transmitted information on one or more addition branch candidates between said mobile station and said base station, and the information on the precedence of said addition branch candidates.
5. A mobile communication system including a mobile station, a base station connected to the mobile station, and a switching center connected to the base station, wherein said switching center creates settings for deleting one or more communicating branches.
6. The mobile communication system as claimed in claim 1, wherein said switching center establishes, when a sum total of a number of communicating branches and a number of the addition branch candidates exceeds a maximum radio branch number simultaneously establishable in communications between said mobile station and said base station, a communication branch in order of precedence up to a maximum cable branch number that can be processed simultaneously by said switching center.
7. A mobile station of a mobile communication system including the mobile station, a base station connected to the mobile station, and a switching center connected to the base station, wherein said mobile station notifies said switching center of information on one or more addition branch candidates between said mobile station and said base station, and of information indicative of precedence of said addition branch candidates.
8. The mobile station as claimed in claim 7, wherein said mobile station notifies, while communicating with said base station using a maximum number of radio branches simultaneously establishable, said switching center of addition of said addition branch candidates, when precedence of an addition branch candidate to be added exceeds, by an amount of a predetermined threshold value, precedence of a communicating branch with lowest precedence.
9. A mobile station of a mobile communication system comprising the mobile station, a base station connected to the mobile station, and a switching center connected to the base station, wherein information transmitted from said mobile station to said switching center includes information on one or more deletion branch candidates between said mobile station and said base station.
10. The mobile communication system as claimed in claim 7 or 8, wherein information transmitted from said mobile station to said switching center further includes information on one or more communicating branches between said mobile station and said base station.
11. A diversity handover branch control method, in which a mobile station detects one or more addition branch candidates constituting handover candidates in communications between said mobile station and a base station connected to the mobile station, and notifies a switching center connected to the base station of the addition branch candidates, wherein information transmitted from said mobile station to said switching center includes information on one or more addition branch candidates between said mobile station and said base station, and information indicative of precedence of said addition branch candidates.
12. A diversity handover branch control method in a mobile communication system including a mobile station, a base station connected to the mobile station, and a switching center connected to the base station, wherein information transmitted from said mobile station to said switching center includes information on one or more deletion branch candidates between said mobile station and said base station.
13. The diversity handover branch control method as claimed in claim 11, wherein said information transmitted from said mobile station to said switching center further includes information on one or more communicating branches between said mobile station and said base station.
14. The diversity handover branch control method as claimed in claim 11, wherein said information indicative of precedence is an order of arrangement of information on said addition branch candidates.
15. The diversity handover branch control method as claimed in claim 11, wherein said information indicative of precedence consists of numerals representing information on said addition branch candidates.
16. The diversity handover branch control method as claimed in claim 11, wherein said information indicative of precedence is an order of arrangement of information on said communicating branches and information on said addition branch candidates.
17. The diversity handover branch control method as claimed in claim 11, wherein said information indicative of precedence consists of numerals representing information on said communicating branches and information on said addition branch candidates.
18. The diversity handover branch control method as claimed in claim 14 or 16, wherein said order of arrangement is a decreasing order of transmission losses.
19. A diversity handover branch control method as claimed in claim 11, wherein said switching center establishes said communication branches between said mobile station and said switching center using information on one or more communicating branches between said mobile station and said base station, transmitted information on said one or more addition branch candidates, and information indicative of precedence of said addition branch candidates.
20. A diversity handover branch control method in a mobile communication system comprising a mobile station, a base station connected to the mobile station, and a switching center connected to the base station, wherein said switching center creates settings for deleting one or more communication branches.
21. A diversity handover branch control method in a mobile communication system including a mobile station, a base station connected to the mobile station, and a switching center connected to the base station, wherein said mobile station autonomously creates settings for deleting one or more communication branches.
22. A diversity handover branch control method, in which a mobile station detects one or more communication branches constituting handover candidates, and notifies a switching center of the communication branches, wherein said mobile station autonomously deletes one or more communication branches, and subsequently notifies said switching center of the deleted branches via a remaining communication branch.
23. A diversity handover branch control method, in which a mobile station detects one or more communication branches constituting handover candidates, wherein said mobile station autonomously deletes one or more communication branches, and subsequently a switching center, which is connected with said mobile station through a base station, deletes a corresponding cable branches by detecting disconnection of the radio branch.
24. The diversity handover branch control method as claimed in claim 19, wherein said switching center establishes, when a sum total of a number of communicating branches and a number of the addition branch candidates exceeds a maximum radio branch number simultaneously establishable in communications between said mobile station and said base station, a communication branch in order of precedence up to a maximum cable branch number that can be processed simultaneously by said switching center.
25. The diversity handover branch control method as claimed in claim 24, wherein said maximum cable branch number is greater than said maximum radio branch number by N, where N is an integer equal to or greater than one.
26. A diversity handover branch control method, in which a mobile station detects one or more addition branch candidates constituting handover candidates in communications between said mobile station and a base station connected to the mobile station, and notifies a switching center connected to the base station of the addition branch candidates, wherein said mobile station does not notify, when a communicating branch number equals a simultaneously establishable maximum radio branch number between said mobile station and said base station, said switching center of information on addition branch candidates that are unlikely to be added in diversity handover.
27. A diversity handover branch control method, in which a mobile station detects one or more addition branch candidates constituting handover candidates in communications between said mobile station and a base station connected to the mobile station, and notifies a switching center connected to the base station of the addition branch candidates, wherein said mobile station notifies, when a sum total of a communicating branch number and an addition branch candidate number is equal to or less than a simultaneously establishable maximum radio branch number between said mobile station and said base station, said switching center of said addition branch candidates.
28. The diversity handover branch control method as claimed in claim 24, wherein said mobile station makes a decision of said addition branch candidates again and notifies said switching center of said addition branch candidates, when a total sum of a communicating branch number and an addition branch number exceeds said maximum cable branch number, and hence said addition branch candidates are not added because of restrictions on an upper limit of said maximum cable branch number.
29. The diversity handover branch control method as claimed in claim 28, wherein said switching center stores, when said addition branch candidates are not added because of the upper limit of said maximum cable branch number, branch candidates that cannot be added because of the upper limit of said maximum cable branch number, and autonomously carries out control.
CA2489812A 1997-06-04 1998-06-03 Mobile radio communication system, mobile station, and method for controlling diversity hand-over branch Expired - Lifetime CA2489812C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP146,940/1997 1997-06-04
JP14694097 1997-06-04
CA002262960A CA2262960C (en) 1997-06-04 1998-06-03 Mobile radio communication system, mobile station, and method for controlling diversity hand-over branch

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002262960A Division CA2262960C (en) 1997-06-04 1998-06-03 Mobile radio communication system, mobile station, and method for controlling diversity hand-over branch

Publications (2)

Publication Number Publication Date
CA2489812A1 true CA2489812A1 (en) 1998-12-10
CA2489812C CA2489812C (en) 2011-07-26

Family

ID=34195223

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2489812A Expired - Lifetime CA2489812C (en) 1997-06-04 1998-06-03 Mobile radio communication system, mobile station, and method for controlling diversity hand-over branch

Country Status (1)

Country Link
CA (1) CA2489812C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2214438A4 (en) * 2007-11-08 2017-04-19 NTT DoCoMo, Inc. Mobile communication method, radio control device, and radio base station

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2214438A4 (en) * 2007-11-08 2017-04-19 NTT DoCoMo, Inc. Mobile communication method, radio control device, and radio base station

Also Published As

Publication number Publication date
CA2489812C (en) 2011-07-26

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Effective date: 20180604