WO2002009453A3 - Slewing detector system and method for the introduction of hysteresis into a hard handoff decision - Google Patents

Slewing detector system and method for the introduction of hysteresis into a hard handoff decision Download PDF

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Publication number
WO2002009453A3
WO2002009453A3 PCT/EP2001/008069 EP0108069W WO0209453A3 WO 2002009453 A3 WO2002009453 A3 WO 2002009453A3 EP 0108069 W EP0108069 W EP 0108069W WO 0209453 A3 WO0209453 A3 WO 0209453A3
Authority
WO
WIPO (PCT)
Prior art keywords
rtd
slewing
hysteresis
rate
hard handoff
Prior art date
Application number
PCT/EP2001/008069
Other languages
French (fr)
Other versions
WO2002009453A2 (en
Inventor
Reza Shahidi
Octavio Jose De Franca Lima
Jen M Chen
Long L Duan
Tom T Sesnic
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to AU2001285838A priority Critical patent/AU2001285838A1/en
Priority to JP2002515038A priority patent/JP4777596B2/en
Publication of WO2002009453A2 publication Critical patent/WO2002009453A2/en
Publication of WO2002009453A3 publication Critical patent/WO2002009453A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off
    • H04W36/008375—Determination of triggering parameters for hand-off based on historical data

Abstract

A method for introducing hysteresis into a hard handoff decision in code division multiple access (CDMA) communications following an initial hard handoff is provided. The method introduces hysteresis when it is determined that the communicating mobile station system clock is slewing. The slewing determination follows from a calculation of the rate of change in the round trip delay (RTD) in communications with the mobile station. A calculated RTD rate of change is compared with a RTD slewing threshold, where the RTD threshold is the assumed slew rate of the mobile station. Hard handoffs are suspended as long as the calculated RTD rate of change exceeds the RTD slewing threshold. A system and apparatus to implement the above-described method are also provided.
PCT/EP2001/008069 2000-07-20 2001-07-12 Slewing detector system and method for the introduction of hysteresis into a hard handoff decision WO2002009453A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001285838A AU2001285838A1 (en) 2000-07-20 2001-07-12 Slewing detector system and method for the introduction of hysteresis into a hard handoff decision
JP2002515038A JP4777596B2 (en) 2000-07-20 2001-07-12 Slewing detector system and method for introducing hysteresis during hard handoff decisions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/620,374 2000-07-20
US09/620,374 US6826161B1 (en) 2000-07-20 2000-07-20 Slewing detector system and method for the introduction of hysteresis into a hard handoff decision

Publications (2)

Publication Number Publication Date
WO2002009453A2 WO2002009453A2 (en) 2002-01-31
WO2002009453A3 true WO2002009453A3 (en) 2002-05-30

Family

ID=24485682

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/008069 WO2002009453A2 (en) 2000-07-20 2001-07-12 Slewing detector system and method for the introduction of hysteresis into a hard handoff decision

Country Status (5)

Country Link
US (1) US6826161B1 (en)
JP (1) JP4777596B2 (en)
CN (1) CN1199513C (en)
AU (1) AU2001285838A1 (en)
WO (1) WO2002009453A2 (en)

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WO1999037037A1 (en) * 1998-01-16 1999-07-22 Qualcomm Incorporated Mobile station assisted timing synchronization in a cdma communication system

Also Published As

Publication number Publication date
AU2001285838A1 (en) 2002-02-05
JP4777596B2 (en) 2011-09-21
US6826161B1 (en) 2004-11-30
WO2002009453A2 (en) 2002-01-31
CN1199513C (en) 2005-04-27
CN1461576A (en) 2003-12-10
JP2004505523A (en) 2004-02-19

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