WO2007113267A3 - A power control method for soft handover in mobile communication systems - Google Patents

A power control method for soft handover in mobile communication systems Download PDF

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Publication number
WO2007113267A3
WO2007113267A3 PCT/EP2007/053128 EP2007053128W WO2007113267A3 WO 2007113267 A3 WO2007113267 A3 WO 2007113267A3 EP 2007053128 W EP2007053128 W EP 2007053128W WO 2007113267 A3 WO2007113267 A3 WO 2007113267A3
Authority
WO
WIPO (PCT)
Prior art keywords
soft handover
mobile terminal
cell
mobile
uplink
Prior art date
Application number
PCT/EP2007/053128
Other languages
French (fr)
Other versions
WO2007113267A2 (en
Inventor
Henrik Andersson
Original Assignee
Andrew Corp
Henrik Andersson
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 Andrew Corp, Henrik Andersson filed Critical Andrew Corp
Publication of WO2007113267A2 publication Critical patent/WO2007113267A2/en
Publication of WO2007113267A3 publication Critical patent/WO2007113267A3/en

Links

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
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/12—Outer and inner loops
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/40—TPC being performed in particular situations during macro-diversity or soft handoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/246—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter calculated in said terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels

Abstract

A method for soft handover in a cellular mobile radio network comprises the steps of determining Signal-to Interference-Ratio (SIR) targets for a mobile and sending the SIR targets to base stations (A, B). In the method the CPICH power from the base stations (A, B) is measured when the mobile terminal is entering the soft handover region between the starting cell (A) and a neighbouring new cell ( B), and a link is added to the mobile, when the CPICH power is within a preset range, providing connection in uplink and downlink directions between the mobile terminal and the base stations A and B, respectively. In the method the base station (A) is commanded to increase the SIR target for the uplink connection of the mobile terminal for forcing the mobile terminal to increase the transmission power until the determined SIR target in the cell (B) has been reached, and when it is confirmed that both uplink and downlink connections are available through cell B, the soft handover is completed by commanding the cell (A) to delete the connection to the mobile terminal. The RNC is configured to control the soft handover for a mobile terminal and comprises means for performing the soft handover.
PCT/EP2007/053128 2006-03-31 2007-03-30 A power control method for soft handover in mobile communication systems WO2007113267A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78766106P 2006-03-31 2006-03-31
US60/787,661 2006-03-31

Publications (2)

Publication Number Publication Date
WO2007113267A2 WO2007113267A2 (en) 2007-10-11
WO2007113267A3 true WO2007113267A3 (en) 2007-11-22

Family

ID=38421513

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/053128 WO2007113267A2 (en) 2006-03-31 2007-03-30 A power control method for soft handover in mobile communication systems

Country Status (1)

Country Link
WO (1) WO2007113267A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9949193B2 (en) 2012-11-15 2018-04-17 Telefonaktiebolaget L M Ericsson (Publ) Methods, a network node and a wireless device for supporting handover in a cellular communications network
CN112689311B (en) * 2020-12-17 2023-06-16 维沃移动通信有限公司 Cell switching method, 5G radio frequency device and electronic equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1235454A2 (en) * 2001-02-21 2002-08-28 Nec Corporation Cellular system, base station, mobile station and communication control method therefor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1235454A2 (en) * 2001-02-21 2002-08-28 Nec Corporation Cellular system, base station, mobile station and communication control method therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Universal Mobile Telecommunications System (UMTS)", ETSI STANDARDS, EUROPEAN TELECOMMUNICATIONS STANDARDS INSTITUTE, SOPHIA-ANTIPO, FR, vol. 3-R1, no. V650, March 2005 (2005-03-01), XP014027623, ISSN: 0000-0001 *

Also Published As

Publication number Publication date
WO2007113267A2 (en) 2007-10-11

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