CA2355242A1 - System and method for estimating interfrequency measurements used for radio network function - Google Patents

System and method for estimating interfrequency measurements used for radio network function Download PDF

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Publication number
CA2355242A1
CA2355242A1 CA002355242A CA2355242A CA2355242A1 CA 2355242 A1 CA2355242 A1 CA 2355242A1 CA 002355242 A CA002355242 A CA 002355242A CA 2355242 A CA2355242 A CA 2355242A CA 2355242 A1 CA2355242 A1 CA 2355242A1
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CA
Canada
Prior art keywords
quality
frequency band
offset
cellular system
transmission quality
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Granted
Application number
CA002355242A
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French (fr)
Other versions
CA2355242C (en
Inventor
Ulrich Jetzek
Petter Blomberg
Lars B. Johansson
Walter Muller
Peter Butovitsch
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Telefonaktiebolaget LM Ericsson AB
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Individual
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Application filed by Individual filed Critical Individual
Publication of CA2355242A1 publication Critical patent/CA2355242A1/en
Application granted granted Critical
Publication of CA2355242C publication Critical patent/CA2355242C/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • 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

Abstract

Devices, systems and methods for estimating inter-frequency measurements used for radio network functions are disclosed. The systems and methods described allow systems to evaluate the quality of a second frequency by using offset adjusted measurements on a first frequency. By using the described methods, system capacity is increased by providing a "low cost" measurement mechanism for support of handover that substantially balance the load between two or more frequency bands. By using the proposed method, handover can be performed more frequently and the interference within each frequency band can therefore be kept at a more optimal level.

Claims (10)

1 Claims:
1. Method for performing a handover in a cellular system, the method comprising the steps of:
measuring a transmission quality (Q F1) on a first frequency band (f1);
determining a quality offset (Q F1,2);
estimating a transmission quality (Q F2) of a second frequency band (f2) based on the quality offset (Q F1,2) and the measured quality (Q F1);
and evaluating the estimated quality (Q F2) in the handover procedure.
2. The method of claim 1, wherein the step of estimating the transmission quality (Q F2) on the second frequency band (f2) comprises the step of adding the quality offset (Q F1,2) to the transmission quality (Q F1) on the first frequency band (f1).
3. The method of claim 1 or 2, wherein a handover occurs once the transmission quality (Q F1, Q F2) on a selected of the frequency bands (f1, f2) exceeds a predefined quality threshold.
4. The method according to any preceding claim, wherein the handover is a hard handover.
5. The method according to any preceding claim, wherein the offset (Q F1,2) is dependent on the power levels which are transmitted on the frequency bands (f1, f2).
6. A quality estimation means in a cellular system, comprising, measurement means for measuring a first transmission quality (Q F1) on a first frequency band (f1);
determining means for determining a quality offset (Q F1,2);
processing means for estimating a second transmission quality (Q F2) on a second frequency band (f2) by adding the quality offset (Q F1.2) to the first transmission quality (Q F1).
7. A control means comprising the quality estimation means of claim 6, further comprising means for determining a quality threshold, wherein a handover from the second frequency band (f2) to the first frequency band (f1) is initiated once the second transmission quality (Q F2) exceeds the quality threshold, provided that the quality offset (Q F1.2) is positive.
8. The control means of claim 7, wherein the control means is disposed in a switch of the cellular system.
9. The control means of claim 7, wherein the control means is disposed in a mobile station (200) of the cellular system.
10. A cellular system comprising a base transceiver station and a mobile station (200) that transmit signals across a first frequency band (f1) to each other, the cellular system measures a transmission quality (Q F1) on the first frequency band (f1), wherein the cellular system determines a quality offset (Q F1.2) and estimates a transmission quality (Q F2) on a second frequency band (f2) by adding the quality offset (Q F1.2) to the transmission quality (Q F1) on the first frequency band (f1), and wherein the cellular system comprises at least one cell (10) having at least two logical sectors (18 - 28) such that one of the logical sectors (18, 22, 26) is assigned to the first frequency band (f1) and the other logical sector (20, 24, 28) is assigned to the second frequency band (f2).
CA2355242A 1998-12-18 1999-12-17 System and method for estimating interfrequency measurements used for radio network function Expired - Lifetime CA2355242C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
IBPCT/IB98/02071 1998-12-18
IB9802071 1998-12-18
US09/464,484 US6546252B1 (en) 1998-12-18 1999-12-15 System and method for estimating interfrequency measurements used for radio network function
US09/464,484 1999-12-15
PCT/EP1999/010136 WO2000038457A1 (en) 1998-12-18 1999-12-17 System and method for estimating interfrequency measurements used for radio network function

Publications (2)

Publication Number Publication Date
CA2355242A1 true CA2355242A1 (en) 2000-06-29
CA2355242C CA2355242C (en) 2010-08-17

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ID=26318727

Family Applications (1)

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CA2355242A Expired - Lifetime CA2355242C (en) 1998-12-18 1999-12-17 System and method for estimating interfrequency measurements used for radio network function

Country Status (12)

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US (1) US6546252B1 (en)
EP (1) EP1142408B1 (en)
JP (1) JP4514175B2 (en)
CN (1) CN100375564C (en)
AR (1) AR021914A1 (en)
AT (1) ATE324757T1 (en)
AU (1) AU3040400A (en)
CA (1) CA2355242C (en)
DE (1) DE69931071T2 (en)
MY (1) MY122467A (en)
TW (1) TW522743B (en)
WO (1) WO2000038457A1 (en)

Families Citing this family (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1863201A3 (en) * 1997-04-24 2014-03-19 Ntt Mobile Communications Network Inc. Method and system for mobile communications
US7394791B2 (en) 1997-12-17 2008-07-01 Interdigital Technology Corporation Multi-detection of heartbeat to reduce error probability
US6222832B1 (en) 1998-06-01 2001-04-24 Tantivy Communications, Inc. Fast Acquisition of traffic channels for a highly variable data rate reverse link of a CDMA wireless communication system
US7936728B2 (en) 1997-12-17 2011-05-03 Tantivy Communications, Inc. System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system
US9525923B2 (en) 1997-12-17 2016-12-20 Intel Corporation Multi-detection of heartbeat to reduce error probability
US8134980B2 (en) 1998-06-01 2012-03-13 Ipr Licensing, Inc. Transmittal of heartbeat signal at a lower level than heartbeat request
US7773566B2 (en) 1998-06-01 2010-08-10 Tantivy Communications, Inc. System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system
US7221664B2 (en) * 1998-06-01 2007-05-22 Interdigital Technology Corporation Transmittal of heartbeat signal at a lower level than heartbeat request
FI981942A (en) * 1998-09-10 2000-03-11 Nokia Networks Oy Method for channel allocation and arrangement in a two frequency network
FI19992729A (en) * 1999-12-20 2001-06-21 Nokia Networks Oy Switching frequency range in a telecommunications system
WO2001058044A2 (en) 2000-02-07 2001-08-09 Tantivy Communications, Inc. Minimal maintenance link to support synchronization
US7254118B1 (en) * 2000-05-22 2007-08-07 Qualcomm Incorporated Method and apparatus in a CDMA communication system
US6584330B1 (en) * 2000-07-18 2003-06-24 Telefonaktiebolaget Lm Ericsson (Publ) Adaptive power management for a node of a cellular telecommunications network
EP1176730A1 (en) * 2000-07-26 2002-01-30 Motorola, Inc. Interference estimation in a communications system
US8155096B1 (en) 2000-12-01 2012-04-10 Ipr Licensing Inc. Antenna control system and method
US6778839B2 (en) * 2001-01-02 2004-08-17 Nokia Corporation Method and device for transmission power selection and bit rate selection for channels with open loop power control
US6954448B2 (en) 2001-02-01 2005-10-11 Ipr Licensing, Inc. Alternate channel for carrying selected message types
US7551663B1 (en) 2001-02-01 2009-06-23 Ipr Licensing, Inc. Use of correlation combination to achieve channel detection
GB2372404B (en) * 2001-02-16 2003-04-09 Ericsson Telefon Ab L M Telecommunications system
ES2626289T3 (en) * 2001-06-13 2017-07-24 Intel Corporation Method and apparatus for transmitting heartbeat signal at a lower level than the heartbeat request
US7339903B2 (en) * 2001-06-14 2008-03-04 Qualcomm Incorporated Enabling foreign network multicasting for a roaming mobile node, in a foreign network, using a persistent address
US7027400B2 (en) * 2001-06-26 2006-04-11 Flarion Technologies, Inc. Messages and control methods for controlling resource allocation and flow admission control in a mobile communications system
US7474650B2 (en) * 2001-06-26 2009-01-06 Qualcomm Incorporated Methods and apparatus for controlling resource allocation where tunneling and access link packet aggregation are used in combination
US8000241B2 (en) * 2001-06-26 2011-08-16 Qualcomm Incorporated Methods and apparatus for controlling access link packet flow aggregation and resource allocation in a mobile communications system
TWI237480B (en) * 2001-06-27 2005-08-01 Flarion Technologies Inc Methods and apparatus for supporting group communications
US7580390B2 (en) * 2001-11-26 2009-08-25 Qualcomm Incorporated Reducing handover frequency error
JP4423836B2 (en) * 2002-04-03 2010-03-03 日本電気株式会社 Cellular system, communication control method, and mobile station
US7356020B2 (en) 2002-04-08 2008-04-08 Qualcomm Incorporated Support of disparate addressing plans and dynamic HA address allocation in mobile IP
US7424296B2 (en) * 2002-04-29 2008-09-09 Nokia Corporation Method and apparatus for soft handover area detection for uplink interference avoidance
US20040047312A1 (en) * 2002-04-29 2004-03-11 Peter Muszynski Method and apparatus for UL interference avoidance by DL measurements and IFHO
US7853260B2 (en) * 2002-04-29 2010-12-14 Nokia Corporation Method and apparatus for cell identification for uplink interference avoidance using inter-frequency measurements
US20030224730A1 (en) * 2002-04-29 2003-12-04 Peter Muszynski Method and apparatus for selection of downlink carriers in a cellular system using multiple downlink carriers
US20030224733A1 (en) * 2002-04-29 2003-12-04 Uwe Schwarz Method and apparatus for estimating signal quality for uplink interference avoidance
US7525948B2 (en) * 2002-04-29 2009-04-28 Nokia Corporation Method and apparatus for utilizing synchronization information
US6681112B1 (en) * 2002-04-29 2004-01-20 Nokia Corporation Handovers of user equipment connections in wireless communications systems
US20040022217A1 (en) * 2002-04-29 2004-02-05 Sari Korpela Method and apparatus for soft handover area detection using inter-band measurements
US6826411B2 (en) * 2002-06-27 2004-11-30 Interdigital Technology Corporation Low power interference signal code power (ISCP) measurement
US8190163B2 (en) * 2002-08-08 2012-05-29 Qualcomm Incorporated Methods and apparatus of enhanced coding in multi-user communication systems
US7363039B2 (en) * 2002-08-08 2008-04-22 Qualcomm Incorporated Method of creating and utilizing diversity in multiple carrier communication system
US6961595B2 (en) * 2002-08-08 2005-11-01 Flarion Technologies, Inc. Methods and apparatus for operating mobile nodes in multiple states
US6788963B2 (en) * 2002-08-08 2004-09-07 Flarion Technologies, Inc. Methods and apparatus for operating mobile nodes in multiple a states
US7882346B2 (en) 2002-10-15 2011-02-01 Qualcomm Incorporated Method and apparatus for providing authentication, authorization and accounting to roaming nodes
US7869803B2 (en) * 2002-10-15 2011-01-11 Qualcomm Incorporated Profile modification for roaming in a communications environment
US7289452B2 (en) * 2002-10-24 2007-10-30 Nokia Corporation Transport block size (TBS) signaling enhancement
US20040152415A1 (en) * 2003-02-01 2004-08-05 Themi Anagnos Active antenna method and system with variable directivity and gain
US7127253B2 (en) * 2003-02-13 2006-10-24 Asustek Computer Inc. Penalty of cell reselection for a wireless device
EP1602184B1 (en) * 2003-02-19 2012-09-05 QUALCOMM Incorporated Methods and apparatus of coding in multi-user communications systems
KR100556362B1 (en) * 2003-04-28 2006-03-03 엘지전자 주식회사 Method for progressing quality of packet communication service
US8593932B2 (en) * 2003-05-16 2013-11-26 Qualcomm Incorporated Efficient signal transmission methods and apparatus using a shared transmission resource
US7925291B2 (en) * 2003-08-13 2011-04-12 Qualcomm Incorporated User specific downlink power control channel Q-bit
EP1659807A1 (en) * 2003-08-29 2006-05-24 Mitsubishi Denki Kabushiki Kaisha Mobile station and communication system
US7164915B2 (en) * 2003-12-19 2007-01-16 Interdigital Technology Corporation Handover in a wireless local area network (WLAN)
US7697501B2 (en) 2004-02-06 2010-04-13 Qualcomm Incorporated Methods and apparatus for separating home agent functionality
EP1575324A1 (en) * 2004-03-10 2005-09-14 France Telecom A new blind handover technique
KR100871244B1 (en) * 2004-03-12 2008-11-28 삼성전자주식회사 Method and System for transmitting data using a Safety channel in Broadband Wireless Access System
US6990324B2 (en) * 2004-04-15 2006-01-24 Flarion Technologies, Inc. Methods and apparatus for selecting between multiple carriers using a single receiver chain tuned to a single carrier
EP1736011A4 (en) * 2004-04-15 2011-02-09 Qualcomm Inc Multi-carrier communications methods and apparatus
US7453912B2 (en) * 2004-04-15 2008-11-18 Qualcomm Incorporated Methods and apparatus for selecting between multiple carriers based on signal energy measurements
EP1829405A1 (en) * 2004-12-21 2007-09-05 Telefonaktiebolaget LM Ericsson (publ) Blind handover using load compensated measurements
US9066344B2 (en) 2005-09-19 2015-06-23 Qualcomm Incorporated State synchronization of access routers
US8135407B2 (en) * 2005-12-09 2012-03-13 Telefonaktiebolaget Lm Ericsson (Publ) Network evaluated hard hardover using predictions
EP2048893A4 (en) * 2006-07-27 2011-07-06 Fujitsu Ltd Wireless communication system, base station apparatus, and mobile station apparatus
JP4965958B2 (en) * 2006-10-03 2012-07-04 株式会社エヌ・ティ・ティ・ドコモ Cell / carrier switching and switchback control during RRC connection
JP4917425B2 (en) * 2006-12-28 2012-04-18 株式会社ユニバーサルエンターテインメント Wireless IC tag reading device, its control device, and wireless IC tag reading system
JP2010516208A (en) * 2007-01-11 2010-05-13 クゥアルコム・インコーポレイテッド Using DTX and DRX in a wireless communication system
US8050629B2 (en) * 2007-10-22 2011-11-01 Motorola Mobility, Inc. Optimizing power settings in a communication system to mitigate interference
US20090191883A1 (en) * 2008-01-25 2009-07-30 Infineon Technologies Ag Method and device for transmitting data
JP5281845B2 (en) * 2008-08-11 2013-09-04 京セラ株式会社 Wireless communication system, wireless communication terminal, and base station selection method
JP2010288155A (en) * 2009-06-12 2010-12-24 Ntt Docomo Inc Receiving station, and mobile communication method
US9853847B2 (en) * 2009-12-30 2017-12-26 Mediatek Inc. Measurement and carrier group based optimization in wireless OFDM multi-carrier communication systems
KR101691666B1 (en) * 2010-07-23 2017-01-02 엘지전자 주식회사 Inter-Frequency Measurement Method
CN104349330A (en) 2013-08-05 2015-02-11 中兴通讯股份有限公司 Method, system and equipment for assisting multi-mode terminal in finding communication chance
US20230361892A1 (en) * 2019-12-13 2023-11-09 Ntt Docomo, Inc. Terminal and measurement method

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2873320B2 (en) 1989-09-19 1999-03-24 日本電信電話株式会社 Mobile station sector determination method
US5353332A (en) 1992-09-16 1994-10-04 Ericsson Ge Mobile Communications Inc. Method and apparatus for communication control in a radiotelephone system
SE500565C2 (en) 1992-10-26 1994-07-18 Ericsson Telefon Ab L M Method of providing random access in a mobile radio system
SE515274C2 (en) 1992-11-09 2001-07-09 Ericsson Telefon Ab L M Package selector for telecommunication system
JP3080204B2 (en) * 1993-05-12 2000-08-21 株式会社エヌ・ティ・ティ・ドコモ Channel switching method during communication of spread spectrum mobile communication
SE502168C2 (en) 1993-12-29 1995-09-04 Ericsson Telefon Ab L M Method and apparatus of a radio communication system
EP1670157B1 (en) 1994-02-09 2010-12-22 Ntt Docomo, Inc. Method and system for CDMA mobile communication
US5809430A (en) * 1994-06-03 1998-09-15 Motorola, Inc. Method and apparatus for base selection in a communication system
US5634192A (en) * 1995-02-23 1997-05-27 Northern Telecom Limited Mobile-assisted handoff technique
US6011787A (en) 1996-03-21 2000-01-04 Ntt Mobile Communications Network Inc. CDMA mobile communication scheme with effective use of sector configuration
JP3484017B2 (en) * 1996-07-05 2004-01-06 株式会社エヌ・ティ・ティ・ドコモ Frequency band use method and base station apparatus in CDMA mobile communication system
US6067446A (en) 1996-07-11 2000-05-23 Telefonaktiebolaget Lm Ericsson Power presetting in a radio communication system
JP3097617B2 (en) * 1996-09-27 2000-10-10 日本電気株式会社 Handoff method and apparatus in CDMA cellular system
US5970407A (en) 1996-12-31 1999-10-19 Telefonaktiebolaget L M Ericsson (Publ) Compensation for mobile assisted handoff measurement inaccuracies
JP3028940B2 (en) * 1997-09-02 2000-04-04 日本電気株式会社 Communication channel assignment method

Also Published As

Publication number Publication date
TW522743B (en) 2003-03-01
MY122467A (en) 2006-04-29
WO2000038457A1 (en) 2000-06-29
US6546252B1 (en) 2003-04-08
AU3040400A (en) 2000-07-12
JP2002534023A (en) 2002-10-08
CA2355242C (en) 2010-08-17
CN1330850A (en) 2002-01-09
AR021914A1 (en) 2002-09-04
ATE324757T1 (en) 2006-05-15
EP1142408B1 (en) 2006-04-26
DE69931071D1 (en) 2006-06-01
JP4514175B2 (en) 2010-07-28
DE69931071T2 (en) 2006-11-30
EP1142408A1 (en) 2001-10-10
CN100375564C (en) 2008-03-12

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