EP1320276A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Call admission control method and mobile station device for cdma mobile communication system.

Assignee: NTT Docomo Inc

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Filing: 1997-12-25

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Granted: —

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Expires: 2017-12-25

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Abstract

Abstract A call admission control method and a mobile station device for a CDMA mobile communication system which is capable of not damaging a communication quality of a mobile station in communication even under a situation of large traffic, suppressing a possibility for degrading a communication qualities of mobile stations in communication with surrounding base stations sufficiently low, and improving efficiency without increasing the control signal traffic. A radio base station device measures an uplink interference amount and broadcasts it to a mobile station, and the mobile station acquires the uplink interference amount that is broadcast from the base station, calculates a required receiving level at the base station that is expected in a case where it is admitted to a connection target base station according to said acquired uplink interference amount, and judges that admission of the mobile station is refused in a case where it is judged that a prescribed communication quality cannot be satisfied according this calculated required receiving level and the uplink interference amount.

Inventors

👤 Yoshihiro Ishikawa
👤 Yasuyuki Watanabe
👤 Takaaki Sato

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-11-01 18:16

CPC Classifications

H; H04; H04W; H04W72/00; H04W72/20; H04W72/23; H04W72/50; H04W72/54; H04W72/541; H04W72/542

Claims Analysis

Total Claims: 2

Claim 1

Independent Claim 140 words

A call admission control method for a CDMA mobile communication that controls admission of calls for a frequency bandwidth shared by a plurality of mobile stations which carry out communications with radio base stations by code division multiple access, in which: a radio base station broadcasts on a broadcast channel call admission information indicating its own state regarding admission of a new call; and a mobile station acquires said call admission information which is broadcast from a connection target radio base station through the broadcast channel, and judges admission permission or refusal of said mobile station according to this acquired call admission information; characterized in that : the radio base station measures its own transmission power, and the call admission information is formed at least by said measured transmission power value of the radio base station and a prescribed threshold.

Claim 2

Dependent Claim 51 words

A call admission control method for a CDMA mobile communication system as claimed in Claim 1, characterized in that the radio base station calculates its own remaining capacity according to said measured transmission power of the radio base station, and the call admission information indicates at least this calculated remaining capacity.

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