WO2001037602A1 - Method for improving handovers between mobile communication systems - Google Patents
Method for improving handovers between mobile communication systems Download PDFInfo
- Publication number
- WO2001037602A1 WO2001037602A1 PCT/SE2000/002043 SE0002043W WO0137602A1 WO 2001037602 A1 WO2001037602 A1 WO 2001037602A1 SE 0002043 W SE0002043 W SE 0002043W WO 0137602 A1 WO0137602 A1 WO 0137602A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- communication system
- gsm
- umts
- measurement values
- downlink measurement
- Prior art date
Links
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
- H04W36/0085—Hand-off measurements
- H04W36/0094—Definition of hand-off measurement parameters
-
- 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
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
Definitions
- the present invention relates in general to the mobile communications field and, in particular, to a method for improving the performance of handovers between different mobile communication systems.
- GSM Global System for Mobile Communications
- TDMA Time Division Multiple Access
- UMTS Universal Mobile Telecommunication System
- MS mobile station
- GSM BSC will have to be performed at the expense of other information.
- a proposed solution to the problem of determining how to transport UMTS measurement information from an MS to a GSM BSC for handovers is to send the measurement information from the UMTS portion of the MS on the GSM Fast Associated Control Channel (FACCH).
- FACCH GSM Fast Associated Control Channel
- a significant problem with using the FACCH to send UMTS measurement information from an MS to a GSM BSC during a handover is that the FACCH operates in a stealing mode, whereby a 20 ms segment of speech is exchanged for signalling information required for the handover.
- certain speech frames are used for signalling information instead of for speech information.
- a method for conveying measurement information from a mobile terminal in a first communication system to a second communication system whereby the measurement information related to the first communication system is conveyed to the second communication system on a control channel which can function in a non- stealing mode.
- UMTS measurement information can be conveyed from an MS to a GSM BSC, in a GSM message on a Slow Associated Control Channel (SACCH).
- SACCH Slow Associated Control Channel
- Another important technical advantage of the present invention is that handovers between different types of mobile communication systems can be effectively performed.
- Still another important technical advantage of the present invention is that coverage for a UMTS network can be expanded using GSM network coverage.
- FIGURE 1 is a simplified block diagram that can be used to illustrate a preferred embodiment of the present invention.
- FIGURE 2 is a flow diagram of an exemplary method that can be used to implement the preferred embodiment of the present invention.
- FIGS 1-2 of the drawings like numerals being used for like and corresponding parts of the various drawings.
- a method for conveying measurement information from a mobile terminal in a first communication system to a second communication system whereby the measurement information related to the first communication system is conveyed to the second communication system on a control channel which can function in a non-stealing mode.
- UMTS measurement information can be conveyed from an MS to a
- GSM BSC in a GSM message on a Slow Associated Control Channel (SACCH).
- SACCH Slow Associated Control Channel
- FIGURE 1 is a simplified block diagram that can be used to illustrate a preferred embodiment of the present invention.
- a GSM network 10 includes a Mobile Services Switching Center (MSC) 12 coupled to a Visitor Location Register (VLR) 13.
- the MSC and VLR in network 10 can be co-located or separate entities.
- the MSC 12 is connected to a BSC 14, which can evaluate incoming measurement information and make handover decisions.
- the BSC 14 is also connected to a Radio Base Station (RBS), which includes a Base Transceiver Station (BTS) 16.
- the BTS 16 can measure signal strength and transmission quality on the UL Traffic Channel (TCH). More importantly, the BTS 16 can receive measurement reports from each one of a plurality of mobile terminals.
- the BTS 16 (via the RBS) conveys the measurement report information to the BSC 14.
- a cell in a UMTS network 20 has been defined by a node B (not explicitly shown) to include a portion of the region in FIGURE 1 which is located to the right of the vertical dotted line 18.
- a GSM network cell defined by BTS 16 includes a portion of the region in FIGURE 1 which is located to the left of the vertical dotted line 18.
- GSM cell (10) is capable of making UMTS measurements related to the UMTS cell (20) and conveying them (in measurement reports) to the GSM BSC in the measurement reports on the SACCH for handover decisions.
- the UMTS measurement information being reported is different from the typical GSM measurement information being reported.
- a typical GSM MS continuously measures and reports (on the UL) signal strength (dBm) and quality (Bit Error Rate or BER) of its own cell, and signal strength of the Broadcast Control Channel (BCCH) carriers of the neighboring cells.
- a UMTS MS instead of measuring signal strength in a UMTS cell, measures and reports (on the UL) the Code Energy-to-Interference Ratio
- the UMTS measurement information is preferably converted to an appropriate GSM measurement format.
- an MS e.g., 22
- a GSM BSC e.g., for handover purposes
- the UMTS measurement information is preferably converted to an appropriate GSM measurement format.
- an exemplary method that can be used by an MS for converting UMTS measurement information to a GSM measurement information format is described below with respect to FIGURE 2.
- a microprocessor located in an MS (e.g., 22) can be used to implement the exemplary conversion method 100 shown, in accordance with the preferred embodiment of the present invention.
- the MS 22 retrieves from local memory, E c /I 0 or RSCP information (from the signal received on antenna 101) measured and stored for reporting to a GSM BSC (14).
- the MS 22 e.g., a dual-mode MS
- the MS 22 converts the retrieved UMTS E c /I 0 or RSCP measurement information to appropriate GSM signal strength information, which can be used by the GSM BSC 14 for making handover decisions.
- the MS 22 compares the converted UMTS signal strength values (derived from step 104) with the set of stored GSM signal strength values (derived from step 102b). The MS 22 then retrieves a predetermined number (e.g., 6, or the maximum number of neighboring cells included in a GSM measurement report) of the "best" measurement values from step 106 to be reported in a measurement report to the GSM BSC 14. At step 108, for this exemplary embodiment, the MS 22 sends a GSM-type measurement report for receipt at the BSC 14 (via BTS 16) on the GSM
- the GSM-type measurement report can include signal strength information about UMTS neighboring cells.
- the MS can convert each stored UMTS measurement value to an appropriate GSM signal strength value, and select each converted UMTS measurement value that exceeds a predetermined signal strength threshold value, for reporting to the GSM BSC 14.
- the UMTS measurement information from the MS 22 can be converted to a GSM measurement format and sent to the GSM BSC 14 on the SACCH for use in making handover decisions. Consequently, since the SACCH does not operate in a stealing mode, the quality of the speech and on-line data being conveyed between the MS 22 and the GSM network 10 will not be diminished due to the use of speech frames for measurement signalling.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60040799.3T DE60040799C5 (en) | 1999-11-17 | 2000-10-20 | METHOD FOR IMPROVING THE REACHING BETWEEN MOBILE COMMUNICATION SYSTEMS |
EP00976479A EP1230818B1 (en) | 1999-11-17 | 2000-10-20 | Method for improving handovers between mobile communication systems |
JP2001538444A JP4444541B2 (en) | 1999-11-17 | 2000-10-20 | Method for improving handover between mobile communication systems |
AU14246/01A AU770733B2 (en) | 1999-11-17 | 2000-10-20 | Method for improving handovers between mobile communication systems |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/442,230 | 1999-11-17 | ||
US09/442,230 US6393286B1 (en) | 1999-11-17 | 1999-11-17 | Method for improving handovers between mobile communication systems |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001037602A1 true WO2001037602A1 (en) | 2001-05-25 |
Family
ID=23756023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2000/002043 WO2001037602A1 (en) | 1999-11-17 | 2000-10-20 | Method for improving handovers between mobile communication systems |
Country Status (10)
Country | Link |
---|---|
US (1) | US6393286B1 (en) |
EP (1) | EP1230818B1 (en) |
JP (1) | JP4444541B2 (en) |
CN (1) | CN1232154C (en) |
AT (1) | ATE414388T1 (en) |
AU (1) | AU770733B2 (en) |
DE (1) | DE60040799C5 (en) |
ES (1) | ES2315243T3 (en) |
PT (1) | PT1230818E (en) |
WO (1) | WO2001037602A1 (en) |
Cited By (13)
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GB2381699A (en) * | 2001-10-30 | 2003-05-07 | Toshiba Res Europ Ltd | Alternative mode monitoring by a transceiver which switches to half rate traffic channels when it monitors other communication modes |
EP2215746A1 (en) * | 2007-11-29 | 2010-08-11 | Jasper Wireless, Inc. | Connectivity management and diagnostics for cellular data devices |
US8346214B2 (en) | 2005-04-29 | 2013-01-01 | Jasper Wireless, Inc. | Self provisioning of wireless terminals in wireless networks |
US8478238B2 (en) | 2005-04-29 | 2013-07-02 | Jasper Wireless, Inc. | Global platform for managing subscriber identity modules |
US8498615B2 (en) | 2005-04-29 | 2013-07-30 | Jasper Wireless, Inc. | Self provisioning of wireless terminals in wireless networks |
WO2014079509A1 (en) * | 2012-11-23 | 2014-05-30 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for enabling traffic steering between heterogeneous telecommunication networks |
US8745184B1 (en) | 2007-05-18 | 2014-06-03 | Jasper Wireless, Inc. | Wireless communication provisioning using state transition rules |
US8767630B1 (en) | 2005-04-29 | 2014-07-01 | Jasper Technologies, Inc. | System and method for responding to aggressive behavior associated with wireless devices |
US8818331B2 (en) | 2005-04-29 | 2014-08-26 | Jasper Technologies, Inc. | Method for enabling a wireless device for geographically preferential services |
US8867575B2 (en) | 2005-04-29 | 2014-10-21 | Jasper Technologies, Inc. | Method for enabling a wireless device for geographically preferential services |
US9226151B2 (en) | 2006-04-04 | 2015-12-29 | Jasper Wireless, Inc. | System and method for enabling a wireless device with customer-specific services |
US9307397B2 (en) | 2005-04-29 | 2016-04-05 | Jasper Technologies, Inc. | Method for enabling a wireless device with customer-specific services |
CN109703008A (en) * | 2019-01-03 | 2019-05-03 | 山东中颖智超数据科技有限公司 | Intelligent increasing material manufacturing method and device based on big data artificial intelligence analysis |
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JP3389908B2 (en) * | 2000-01-07 | 2003-03-24 | 日本電気株式会社 | Mobile terminal network selection method and storage medium storing mobile terminal network selection program |
US6788959B2 (en) * | 2000-10-30 | 2004-09-07 | Nokia Corporation | Method and apparatus for transmitting and receiving dynamic configuration parameters in a third generation cellular telephone network |
GB2388276B (en) * | 2002-05-04 | 2004-06-30 | Motorola Inc | A wireless communicaton system, a wireless communication device and method of monitoring therefor |
US6950655B2 (en) * | 2002-10-01 | 2005-09-27 | Interdigital Technology Corporation | Method and system wherein handover information is broadcast in wireless local area networks |
US7251227B2 (en) * | 2002-10-04 | 2007-07-31 | M-Stack Limited | Access stratum manager |
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US8112094B1 (en) | 2005-06-09 | 2012-02-07 | At&T Mobility Ii Llc | Radio access layer management |
KR101042763B1 (en) * | 2005-07-07 | 2011-06-20 | 삼성전자주식회사 | Hand-over method and apparatus between differential systems |
US7499434B2 (en) * | 2005-08-24 | 2009-03-03 | Alcatel-Lucent Usa Inc. | Mapping uplink signaling channels |
KR101208526B1 (en) * | 2006-06-12 | 2012-12-05 | 엘지전자 주식회사 | method of performing communication according to control information |
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WO2017104553A1 (en) * | 2015-12-14 | 2017-06-22 | 日本電気株式会社 | Terminal and transition method |
CN111212452B (en) * | 2020-01-13 | 2022-05-17 | 海能达通信股份有限公司 | Handover method for voice communication, communication system, terminal and storage medium |
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- 2000-10-20 AT AT00976479T patent/ATE414388T1/en not_active IP Right Cessation
- 2000-10-20 AU AU14246/01A patent/AU770733B2/en not_active Expired
- 2000-10-20 EP EP00976479A patent/EP1230818B1/en not_active Expired - Lifetime
- 2000-10-20 JP JP2001538444A patent/JP4444541B2/en not_active Expired - Lifetime
- 2000-10-20 CN CNB008157618A patent/CN1232154C/en not_active Expired - Lifetime
- 2000-10-20 ES ES00976479T patent/ES2315243T3/en not_active Expired - Lifetime
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GB2381699A (en) * | 2001-10-30 | 2003-05-07 | Toshiba Res Europ Ltd | Alternative mode monitoring by a transceiver which switches to half rate traffic channels when it monitors other communication modes |
GB2381699B (en) * | 2001-10-30 | 2004-01-07 | Toshiba Res Europ Ltd | Alternative mode monitoring |
US9288337B2 (en) | 2005-04-29 | 2016-03-15 | Jasper Technologies, Inc. | Method for enabling a wireless device for geographically preferential services |
US8818331B2 (en) | 2005-04-29 | 2014-08-26 | Jasper Technologies, Inc. | Method for enabling a wireless device for geographically preferential services |
US8346214B2 (en) | 2005-04-29 | 2013-01-01 | Jasper Wireless, Inc. | Self provisioning of wireless terminals in wireless networks |
US8478238B2 (en) | 2005-04-29 | 2013-07-02 | Jasper Wireless, Inc. | Global platform for managing subscriber identity modules |
US8498615B2 (en) | 2005-04-29 | 2013-07-30 | Jasper Wireless, Inc. | Self provisioning of wireless terminals in wireless networks |
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US8965332B2 (en) | 2005-04-29 | 2015-02-24 | Jasper Technologies, Inc. | Global platform for managing subscriber identity modules |
US9699646B2 (en) | 2005-04-29 | 2017-07-04 | Cisco Technology, Inc. | Method for enabling a wireless device with customer-specific services |
US9462453B2 (en) | 2005-04-29 | 2016-10-04 | Jasper Technologies, Inc. | Global platform for managing subscriber identity modules |
US8767630B1 (en) | 2005-04-29 | 2014-07-01 | Jasper Technologies, Inc. | System and method for responding to aggressive behavior associated with wireless devices |
US9106768B2 (en) | 2005-04-29 | 2015-08-11 | Jasper Technologies, Inc. | Method for enabling a wireless device for geographically preferential services |
US8868042B2 (en) | 2005-04-29 | 2014-10-21 | Jasper Technologies, Inc. | Global platform for managing subscriber identity modules |
US9094538B2 (en) | 2005-04-29 | 2015-07-28 | Jasper Technologies, Inc. | Method for enabling a wireless device for geographically preferential services |
US9398169B2 (en) | 2005-04-29 | 2016-07-19 | Jasper Technologies, Inc. | Method for enabling a wireless device for geographically preferential services |
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US8942181B2 (en) | 2005-04-29 | 2015-01-27 | Jasper Technologies, Inc. | System and method for responding to aggressive behavior associated with wireless devices |
US8958773B2 (en) | 2005-04-29 | 2015-02-17 | Jasper Technologies, Inc. | Method for enabling a wireless device for geographically preferential services |
US9307397B2 (en) | 2005-04-29 | 2016-04-05 | Jasper Technologies, Inc. | Method for enabling a wireless device with customer-specific services |
US9247415B2 (en) | 2005-04-29 | 2016-01-26 | Jasper Technologies, Inc. | Global platform for managing subscriber identity modules |
US8867575B2 (en) | 2005-04-29 | 2014-10-21 | Jasper Technologies, Inc. | Method for enabling a wireless device for geographically preferential services |
US9179295B2 (en) | 2005-04-29 | 2015-11-03 | Jasper Technologies, Inc. | Global platform for managing subscriber identity modules |
US9100851B2 (en) | 2005-04-29 | 2015-08-04 | Jasper Technologies, Inc. | System and method for responding to aggressive behavior associated with wireless devices |
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US9226151B2 (en) | 2006-04-04 | 2015-12-29 | Jasper Wireless, Inc. | System and method for enabling a wireless device with customer-specific services |
US9084088B2 (en) | 2007-05-18 | 2015-07-14 | Jasper Technologies, Inc. | Wireless communication provisioning using state transition rules |
US9338636B2 (en) | 2007-05-18 | 2016-05-10 | Jasper Technologies, Inc. | Wireless communication provisioning using state transition rules |
US8745184B1 (en) | 2007-05-18 | 2014-06-03 | Jasper Wireless, Inc. | Wireless communication provisioning using state transition rules |
US9094305B2 (en) | 2007-11-29 | 2015-07-28 | Jasper Technologies, Inc. | Connectivity management and diagnostics for cellular data devices |
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US8730842B2 (en) | 2007-11-29 | 2014-05-20 | Jasper Wireless, Inc. | Connectivity management and diagnostics for cellular data devices |
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US9756014B2 (en) | 2009-05-07 | 2017-09-05 | Cisco Technology, Inc. | System and method for responding to aggressive behavior associated with wireless devices |
US9166950B2 (en) | 2009-05-07 | 2015-10-20 | Jasper Technologies, Inc. | System and method for responding to aggressive behavior associated with wireless devices |
WO2014079509A1 (en) * | 2012-11-23 | 2014-05-30 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for enabling traffic steering between heterogeneous telecommunication networks |
US10091719B2 (en) | 2012-11-23 | 2018-10-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and apparatus for enabling traffic steering between heterogeneous telecommunication networks |
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Also Published As
Publication number | Publication date |
---|---|
US6393286B1 (en) | 2002-05-21 |
PT1230818E (en) | 2009-01-30 |
ES2315243T3 (en) | 2009-04-01 |
DE60040799C5 (en) | 2020-03-05 |
AU770733B2 (en) | 2004-03-04 |
CN1232154C (en) | 2005-12-14 |
CN1390428A (en) | 2003-01-08 |
JP4444541B2 (en) | 2010-03-31 |
ATE414388T1 (en) | 2008-11-15 |
EP1230818B1 (en) | 2008-11-12 |
JP2003515298A (en) | 2003-04-22 |
EP1230818A1 (en) | 2002-08-14 |
AU1424601A (en) | 2001-05-30 |
DE60040799D1 (en) | 2008-12-24 |
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