JP2000504523A - 拡散スペクトル通信システムにおいてオーファン条件を軽減する方法および装置 - Google Patents
拡散スペクトル通信システムにおいてオーファン条件を軽減する方法および装置Info
- Publication number
- JP2000504523A JP2000504523A JP10521360A JP52136098A JP2000504523A JP 2000504523 A JP2000504523 A JP 2000504523A JP 10521360 A JP10521360 A JP 10521360A JP 52136098 A JP52136098 A JP 52136098A JP 2000504523 A JP2000504523 A JP 2000504523A
- Authority
- JP
- Japan
- Prior art keywords
- remote unit
- base station
- orphan
- base stations
- determining
- 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
Links
- 238000004891 communication Methods 0.000 title claims abstract description 31
- 238000001228 spectrum Methods 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 title claims description 30
- 238000013500 data storage Methods 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 description 10
- 238000005259 measurement Methods 0.000 description 5
- 230000002776 aggregation Effects 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000010267 cellular communication Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.拡散スペクトル通信システムにおいてオーファン条件を軽減する方法であ って: 遠隔ユニットにより送信される信号を受信する段階; 基地局において前記被送信信号の信号品質を測定する段階; 前記遠隔ユニットが受認可能な基地局にハンドオフしない場合を判定する段階 ; 前記判定に応答して能動リストのより多くの基地局を追加する段階;および 前記追加段階に応答して、2つ以上の基地局を有する前記遠隔ユニットと通信 する段階; によって構成されることを特徴とする方法。 2.前記判定段階が: 前記遠隔ユニットの位置を判定する段階;および 前記位置において第2遠隔ユニットにより以前にオーファン条件が起こったか 否かを判定する段階; によって構成されることを特徴とする請求項1記載の方法。 3.前記判定段階が: サービス提供基地局および近隣基地局に関して負荷レベルおよびノイズ・レベ ルを獲得する段階;および 前記近隣基地局が前記サービス提供基地局よりも低い受 信ノイズ・レベルを有すると判定する段階; によって構成されることを特徴とする請求項1記載の方法。 4.前記判定段階が、前記遠隔ユニットが近隣セル付近にあるか否かを判定す る段階によって構成されることを特徴とする請求項1記載の方法。 5.前記判定段階が、前記遠隔ユニットの呼品質が閾値レベルより低下しつつ あるか否かを判定する段階によって構成されることを特徴とする請求項1記載の 方法。 6.前記能動リストに、より多くの基地局を追加する前記段階が: T_ADDを調整する段階;および 前記調整段階に応答して、前記能動リストに、より多くの基地局を追加する段 階; によって構成されることを特徴とする請求項1記載の方法。 7.前記能動リストに、より多くの基地局を追加する前記段階が: T_COMPを調整する段階;および 前記調整段階に応答して、前記能動リストに、より多くの基地局を追加する段 階; によって構成されることを特徴とする請求項1記載の方法。 8.前記能動リストに、より多くの基地局を追加する前 記段階が: 基地局が近隣基地局であるか否かを判定する段階; 前記近隣基地局において、前記遠隔ユニットの逆方向チャネルを測定する段階 ;および 前記測定段階に基づき、前記能動リストに前記近隣基地局を追加する段階; によって構成されることを特徴とする請求項1記載の方法。 9.通信システムにおいてオーファン条件を軽減する装置であって: 遠隔ユニットが歴史的にオーファンになったことがある位置を出力するオーフ ァン履歴データ格納装置; 遠隔ユニットの位置を出力する位置発見装置;および 入力として、前記遠隔ユニットの位置と、前記遠隔ユニットが歴史的にオーフ ァンになったことのある位置とを有するプロセッサ; によって構成されることを特徴とする装置。 10.オーファン条件を軽減する方法であって: 遠隔ユニットがオーファンになる可能性がある場合を判定する段階; 前記判定段階に基づいて、候補基地局を選択する段階; 前記候補基地局との通信がオーファン条件を緩和するか否か試験する段階;お よび 前記試験段階に基づき、前記候補基地局と通信する段階; によって構成されることを特徴とする方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/746,110 US5812540A (en) | 1996-11-06 | 1996-11-06 | Method and apparatus for mitigating an orphan condition in a spread-spectrum communication system |
US08/746,110 | 1996-11-06 | ||
PCT/US1997/015158 WO1998020640A1 (en) | 1996-11-06 | 1997-08-27 | Method and apparatus for mitigating an orphan condition in a spread-spectrum communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000504523A true JP2000504523A (ja) | 2000-04-11 |
JP3957325B2 JP3957325B2 (ja) | 2007-08-15 |
Family
ID=24999528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52136098A Expired - Fee Related JP3957325B2 (ja) | 1996-11-06 | 1997-08-27 | 拡散スペクトル通信システムにおいてオーファン条件を軽減する方法および装置 |
Country Status (9)
Country | Link |
---|---|
US (1) | US5812540A (ja) |
EP (1) | EP0879514B1 (ja) |
JP (1) | JP3957325B2 (ja) |
KR (1) | KR100347281B1 (ja) |
CN (2) | CN1092881C (ja) |
BR (1) | BR9706906A (ja) |
CA (1) | CA2241833C (ja) |
DE (1) | DE69738777D1 (ja) |
WO (1) | WO1998020640A1 (ja) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE39177E1 (en) * | 1997-01-29 | 2006-07-11 | Qualcomm, Inc. | Method and apparatus for performing soft hand-off in a wireless communication system |
US6052594A (en) * | 1997-04-30 | 2000-04-18 | At&T Corp. | System and method for dynamically assigning channels for wireless packet communications |
US7133380B1 (en) | 2000-01-11 | 2006-11-07 | At&T Corp. | System and method for selecting a transmission channel in a wireless communication system that includes an adaptive array |
KR100253137B1 (ko) * | 1997-06-14 | 2000-04-15 | 윤종용 | 셀룰라 이동통신 시스템의 티에스비에서의 프레임 선별방법 |
KR100265855B1 (ko) * | 1997-07-10 | 2000-09-15 | 정선종 | 무선통신시스템에서의셀간핸드오프호처리방법 |
CA2238791C (en) * | 1997-08-11 | 2004-07-13 | Nec Corporation | Cdma type mobile radio communication system capable of realizing an effective system operation without excess and deficiency of radio base stations simultaneously connected |
US6785249B2 (en) | 1998-10-05 | 2004-08-31 | Qualcomm, Incorporated | Method and apparatus for detecting forward and reverse link imbalance in digital cellular communication systems |
US6119010A (en) * | 1998-10-13 | 2000-09-12 | Motorola, Inc. | Method and apparatus for adjusting channel powers in a wireless communication system based on a predicted mobile location |
KR100311506B1 (ko) * | 1998-11-04 | 2001-11-15 | 서평원 | 이동통신시스템에서핸드오프제어방법 |
KR100311509B1 (ko) * | 1998-12-22 | 2001-11-15 | 서평원 | 주파수간핸드오프제어방법 |
JP2000354267A (ja) * | 1999-04-07 | 2000-12-19 | Toshiba Corp | ハンドオーバ要求機能を備えた移動通信端末装置、ハンドオーバ制御装置、ハンドオーバ制御方法及びハンドオーバ制御方法を記憶した記憶媒体 |
US6442389B1 (en) * | 1999-06-21 | 2002-08-27 | Motorola, Inc. | Method and apparatus for optimizing parameters of a communication system |
US20020128032A1 (en) * | 2000-06-16 | 2002-09-12 | Akito Fukui | Radio communication system |
DE60100494T2 (de) * | 2000-10-10 | 2004-05-27 | Lucent Technologies Inc. | Verfahren zur Verhinderung von Anrufverlusten in einem Funkkommunikationssystem |
IL159361A0 (en) | 2001-06-26 | 2004-06-01 | Qualcomm Inc | Method and apparatus for adaptive server selection in a data communication system |
US6731936B2 (en) * | 2001-08-20 | 2004-05-04 | Qualcomm Incorporated | Method and system for a handoff in a broadcast communication system |
US6980820B2 (en) * | 2001-08-20 | 2005-12-27 | Qualcomm Inc. | Method and system for signaling in broadcast communication system |
JP4319034B2 (ja) * | 2001-10-15 | 2009-08-26 | クゥアルコム・インコーポレイテッド | 通信システムの不平衡を管理する方法および装置 |
US7912485B2 (en) * | 2003-09-11 | 2011-03-22 | Qualcomm Incorporated | Method and system for signaling in broadcast communication system |
US20050215265A1 (en) * | 2004-03-23 | 2005-09-29 | Sharma Sanjeev K | Method and system for load balancing in a wireless communication system |
US8570880B2 (en) * | 2004-08-05 | 2013-10-29 | Qualcomm Incorporated | Method and apparatus for receiving broadcast in a wireless multiple-access communications system |
CN100459791C (zh) * | 2005-02-24 | 2009-02-04 | 联发科技股份有限公司 | 交递控制方法及相关装置 |
CN103686907A (zh) * | 2012-09-12 | 2014-03-26 | 中国电信股份有限公司 | Cdma软切换比例动态调整方法和系统 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5175867A (en) * | 1991-03-15 | 1992-12-29 | Telefonaktiebolaget L M Ericsson | Neighbor-assisted handoff in a cellular communications system |
US5267261A (en) * | 1992-03-05 | 1993-11-30 | Qualcomm Incorporated | Mobile station assisted soft handoff in a CDMA cellular communications system |
US5327575A (en) * | 1992-03-23 | 1994-07-05 | Motorola, Inc. | Directional handover control in digital mobile radio systems employing MAHO |
US5475870A (en) * | 1994-09-12 | 1995-12-12 | Qualcomm Incorporated | Apparatus and method for adding and removing a base station from a cellular communications system |
US5590177A (en) * | 1994-09-30 | 1996-12-31 | Motorola, Inc. | Method for preventing a dropped call during a handoff in a radiotelephone system |
US5577022A (en) * | 1994-11-22 | 1996-11-19 | Qualcomm Incorporated | Pilot signal searching technique for a cellular communications system |
-
1996
- 1996-11-06 US US08/746,110 patent/US5812540A/en not_active Expired - Lifetime
-
1997
- 1997-08-27 BR BR9706906A patent/BR9706906A/pt not_active Application Discontinuation
- 1997-08-27 EP EP97941370A patent/EP0879514B1/en not_active Expired - Lifetime
- 1997-08-27 CA CA002241833A patent/CA2241833C/en not_active Expired - Fee Related
- 1997-08-27 CN CN97191580A patent/CN1092881C/zh not_active Expired - Fee Related
- 1997-08-27 KR KR10-1998-0705162A patent/KR100347281B1/ko not_active IP Right Cessation
- 1997-08-27 DE DE69738777T patent/DE69738777D1/de not_active Expired - Lifetime
- 1997-08-27 WO PCT/US1997/015158 patent/WO1998020640A1/en active IP Right Grant
- 1997-08-27 JP JP52136098A patent/JP3957325B2/ja not_active Expired - Fee Related
-
2002
- 2002-03-04 CN CN02106728A patent/CN1396735A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
CN1396735A (zh) | 2003-02-12 |
US5812540A (en) | 1998-09-22 |
EP0879514B1 (en) | 2008-06-18 |
JP3957325B2 (ja) | 2007-08-15 |
CN1092881C (zh) | 2002-10-16 |
WO1998020640A1 (en) | 1998-05-14 |
CN1207222A (zh) | 1999-02-03 |
EP0879514A4 (en) | 2001-10-24 |
BR9706906A (pt) | 1999-07-20 |
KR100347281B1 (ko) | 2004-05-24 |
CA2241833A1 (en) | 1998-05-14 |
CA2241833C (en) | 2002-06-04 |
EP0879514A1 (en) | 1998-11-25 |
DE69738777D1 (de) | 2008-07-31 |
KR19990077030A (ko) | 1999-10-25 |
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