WO2001082644A1 - Channel preselection method for a rf communication system - Google Patents
Channel preselection method for a rf communication system Download PDFInfo
- Publication number
- WO2001082644A1 WO2001082644A1 PCT/EP2001/004017 EP0104017W WO0182644A1 WO 2001082644 A1 WO2001082644 A1 WO 2001082644A1 EP 0104017 W EP0104017 W EP 0104017W WO 0182644 A1 WO0182644 A1 WO 0182644A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- communication
- channel
- channels
- subscriber stations
- communication parameters
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Definitions
- the invention relates to a channel entering method for a RF communication system, in particular an indoor network, com- prising a plurality of subscriber stations, each of said subscriber stations having a transmitter and a receiver, whereby information can be independently exchanged between said subscriber stations using respective transmitters and receivers and a plurality of channels available for RF com- munication in said RF communication system.
- LAN local area networks
- devices located in an area and belonging to a group of dedicated users for example in the same apartment or in the same building, may be considered to be part of a so-called cluster.
- This may also include near-by-stations outside the respective building.
- Information exchange between the devices of the cluster and optionally between the cluster devices and stations of other near-by-clusters may be based on wireless RF communication.
- a combination of wireless and wire line RF communication may also be provided.
- Devices of a cluster and/or optionally such of different clusters which communicate with each other, use one (or optionally more than one) channel by sharing a plurality of time and/or frequency slots. This normally causes no interference problems.
- the devices and the stations of the various clusters may use/reuse the RF channels available for communication under certain conditions (distance, interference level, etc.). Therefore, com- munication signals from devices in other clusters in most cases cause interference problems with respect to communication of the devices of the cluster considered. In situations of high communication traffic, interference may prevent a reuse of the same channel and, if no more channels are available, it blocks usage of a desired service.
- each device before entering and using a preferred channel for communication each device separately performs a channel testing procedure.
- the channel testing procedure on the basis of communication parameters the preferred channel is tested whether it enables RF communication, preferably optimised communication over the preferred channel.
- a channel entering method for a RF communication system in particular an indoor network, comprising a plurality of subscriber stations, each of said subscriber stations having a transmitter and a receiver, whereby information can be independently exchanged between said subscriber stations using respective transmitters and receivers and a plurality of channels available for RF communication in said RF communication system, said method comprising the steps of: a) providing a first set of communication parameters; b) using said first set of communication parameters to test a first group of channels of said plurality of channels for RF communication between a first and a second subscriber station of said plurality of subscriber stations; c) providing, if for said RF communication between said first and said second subscriber station no channel of said first group of channels meets said first set of com- munication parameters, a second set of communication parameters; d) using said second set of communication parameters to test a second group of channels for said RF communication between said first and said second subscriber station, wherein said second group of channels comprises said first group of channels at
- a channel entering method for a RF communication system comprising a plurality of subscriber stations (SI to Sn, n > 2), each of said subscriber stations (SI to Sn) having a transmitter and a receiver, whereby information can be exchanged between said subscriber stations (SI to Sn) using respective transmitters and receivers and a plurality of channels available for RF communication in said RF communication system, said method comprising the steps of: a) providing at least a first set of communication parameters (II, Ml) and a second set of communication parame- ters (12, M2) ; b) using said first and second set of communication parameters (II, Ml) to test a group of channels (Cl to Cm, m > 2) of said plurality of channels for RF communication between a first and a second subscriber station (Sx, Sy; 1 ⁇ x ⁇ n, 1 ⁇ y ⁇ n) of said plurality of subscriber station (Sx, Sy; 1 ⁇ x ⁇ n
- the disclosed methods improve the utilisation or channel efficiency and avoids negative consequences due to more frequent (re) use of the channels.
- the other subscriber stations of said plurality of subscriber stations On the basis of the acquisition information sent by said first subscriber stations and indicating that said channel meeting said second set of communication parameters is entered, the other subscriber stations of said plurality of subscriber stations, especially in the same cluster, can decide whether or not they also want to use or reuse said channel entered by said one sub- scriber station. Evaluating said acquisition information received from said first subscriber station, another subscriber station of said plurality of subscriber stations may decide not to use or reuse said channel entered by said one subscriber station, since entering of said channel by the other subscriber station may lead to a break down of communication performed by the first subscriber station. Therefore, the method disclosed improves efficiency of RF communication in the system and decreases the overall failure rate of the RF communication system.
- Fig. 1 shows a schematic representation of a RF communication system
- Fig. 2 shows a diagram explaining different communication parameters .
- Fig. 1 shows a RF communication system with a plurality of subscriber stations S1,...,S4. Three of the subscriber sta- tions SI, S2, S3 are located within an area or cluster 1, as an apartment or a building. One subscriber station S4 is located outside the cluster 1. Subscriber station S4 is a transceiver station transmitting RF information that in principle can be received by subscriber stations SI and/or S2 and/or S3. In addition, RF signals can be independently exchanged between the cluster subscriber stations SI, S2, S3. There may be some more stations (not shown) which cannot be received reliably by the subscriber stations SI, S2, S3 but which generate an interference level at the location of stations SI, S2, S3. The subscriber stations SI, S2, S3 may be part of a local area network (LAN) comprising, for example TES, personal computers, stereo systems, telephones etc.
- LAN local area network
- the subscriber stations SI, S2, S3, S4 use the RF channels available for communication by sharing a quantity of time and/or frequency slots of a channel, and, if appropriate (e.g. different clusters), by using different channels.
- a RF channel Before a RF channel is used for communication between two or more subscriber stations, for example between Si and S2, the channel is tested to check whether the channel meets requirements necessary for RF communication over the channel.
- a set of communication parameters is used to proof a chan- nel's usability for RF communication. In general, communication parameters are used to monitor the channel's transmission quality.
- a channel acquisition or entering process is started with testing channels available whether they are free or occupied.
- a certain interference power reference value II or 12 and/or a certain margin Ml or M2 may be applied in order to separate between channels usable for communication between subscriber stations SI and S2 and channels occupied, respectively.
- the interference power reference values II and 12 represent different levels of interference power resulting from RF communication other than the RF communication under test.
- the test procedure may include more sophisticated methods, e.g. a correlation of the received channel signals with known (assumed) pattern or sequences in order to be able to detect relatively weak signals and distinguish be- tween system-conform signals / interference and others
- the channel test procedure needs to take into consideration a margin Ml, M2 for worse conditions (e.g. moving subscriber stations and /or switching on another station of the considered cluster and/or a station belonging to an existing (operating) but interfering cluster) , which affect the RF communication between subscriber stations SI and S2 and may result in further decrease of channel efficiency or communication quality.
- the sum (Il+Ml; I2+M2) of the respective interference power reference value II or 12 and the respective margin Ml or M2 has to be lower than an acceptable interference power Pa (see Fig. 2) which also is a characteristic channel parameter.
- a relative big margin Ml or M2 has to be applied in channel testing. This presumably leads to a channel utilisation or efficiency far beyond theoreti- cal values or beyond such values that could be reached if the positioning of the devices would have been known. If an adequate margin is not applied and no other measures are taken, RF communication may partially be interrupted, or the RF communication system may break down in various clusters.
- a minimal input power Pm (see Fig. 2) and the interference power reference value II or 12 is sometimes referred to as interference distance.
- a transmitted power Pt and a nominal input power Pn are also depicted.
- a method for entering a RF channel used for communication between two subscriber stations for example between subscriber stations SI and S2 is described.
- a set of communication parameters is provided.
- the set of communication parameters comprises the interference power reference value II and the margin Ml (see Fig. 2) .
- the new channel entering method is independent of the number and the nature of the communication parameters used for channel testing.
- the set of communication parameters is selected to provide for communication between subscriber stations SI and S2 a RF chan- nel of good quality, preferably high quality.
- the set of communication parameters is used to test a first group of channels available for RF communication between subscriber stations SI and S2. Following, if for said RF communication between subscriber stations SI and S2 no channel of the first group of channels meets the set of communication parameters II and Ml, another set of communication parameters 12 and M2 is provided.
- the other set of communication parameters 12 and M2 is selected to provide for com- munication between subscriber stations SI and S2 a RF channel of sufficient quality, so that RF information can be transmitted.
- the other set of communication parameters 12 and M2 is used to test a second group of channels available for the RF communication between the subscriber stations SI and S2, wherein said second group of channels comprises said first group of channels at least partially.
- the at least one channel is en- tered for RF communication between the subscriber stations SI and S2.
- an acquisition and channel quality information is sent from the subscriber station Si to the other subscriber stations of the cluster (S2, S3) and S4, to indicate that the at least one channel meeting the other set of communication parameters 12 and M2 is entered for the RF communication between the subscriber stations SI and S2.
- data characterising or identifying channels tested may be stored for all channels providing better conditions than defined by the other set of communication parameters 12 and M2.
- the channel providing the best results with respect to the set of communication parameter II and Ml or the other set of communication parameter 12 and M2 may be selected for further actions, especially for further RF communication actions .
- At least one further set of communication parameters may be provided.
- the at least one further set of communication parameters is selected to provide for communication between subscriber stations SI and S2 a RF channel of still sufficient quality, so that RF information can be transmitted between the subscriber stations SI and S2.
- the at least one channel selected and entered for RF communication between the subscriber stations SI and S2 may be considered as a provisional selection.
- the provisionally selected channel may be used for a first set-up RF communication between the subscriber stations SI and S2.
- the provisionally selected channel could later be reviewed on x both sides', i.e. on the side of the subscriber station SI and on the side of the subscriber station S2, respectively, and be selected for further communication between the subscriber stations SI and S2, only if RF communication can be performed with sufficient transmission quality on ⁇ both sides' .
- an acknowledge information is sent form subscriber station S2 to the subscriber station SI, the acknowledge information indicating that the at least one channel has been accepted.
- the channel entering method described is essentially independent of the method used for channel testing as well as the set of communication parameters. In any case, after entering a channel for communica- tion by one of the subscriber stations the other subscriber stations of the RF communication system are informed by means of the acquisition information.
- the de- scribed channel entering method may be performed by all subscriber stations SI, ..., S4, so that all subscriber stations SI, ..., S4 can inform each other with respect to RF channels entered by the respective subscriber station for RF communication in the RF communication system.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MXPA02010393A MXPA02010393A (en) | 2000-04-22 | 2001-04-07 | Channel preselection method for a rf communication system. |
DE60122130T DE60122130T2 (en) | 2000-04-22 | 2001-04-07 | CHANNEL PRE-SELECTION PROCEDURE FOR AN RF COMMUNICATION SYSTEM |
KR1020027013136A KR100719048B1 (en) | 2000-04-22 | 2001-04-07 | Channel preselection method for a rf communication system |
EP01919441A EP1279307B1 (en) | 2000-04-22 | 2001-04-07 | Channel preselection method for a rf communication system |
JP2001578146A JP4744767B2 (en) | 2000-04-22 | 2001-04-07 | Channel application method |
US10/239,962 US6975861B2 (en) | 2000-04-22 | 2001-04-07 | Channel preselection method for a RF communication system |
AU46535/01A AU4653501A (en) | 2000-04-22 | 2001-04-07 | Channel preselection method for a rf communication system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00108736.0 | 2000-04-22 | ||
EP00108736A EP1148750A1 (en) | 2000-04-22 | 2000-04-22 | Channel preselection method for a RF communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001082644A1 true WO2001082644A1 (en) | 2001-11-01 |
Family
ID=8168540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/004017 WO2001082644A1 (en) | 2000-04-22 | 2001-04-07 | Channel preselection method for a rf communication system |
Country Status (9)
Country | Link |
---|---|
US (1) | US6975861B2 (en) |
EP (2) | EP1148750A1 (en) |
JP (1) | JP4744767B2 (en) |
KR (1) | KR100719048B1 (en) |
CN (1) | CN1220407C (en) |
AU (1) | AU4653501A (en) |
DE (1) | DE60122130T2 (en) |
MX (1) | MXPA02010393A (en) |
WO (1) | WO2001082644A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7512404B2 (en) * | 2002-11-21 | 2009-03-31 | Bandspeed, Inc. | Method and apparatus for sector channelization and polarization for reduced interference in wireless networks |
US7136655B2 (en) * | 2002-11-21 | 2006-11-14 | Bandspeed, Inc. | Method and apparatus for coverage and throughput enhancement in a wireless communication system |
US7248877B2 (en) * | 2002-11-21 | 2007-07-24 | Bandspeed, Inc. | Multiple access wireless communications architecture |
US7647055B2 (en) | 2003-09-19 | 2010-01-12 | Qualcomm Incorporated | System and method for integration of wireless computer network in position determining technology |
US7854760B2 (en) * | 2005-05-16 | 2010-12-21 | Boston Scientific Scimed, Inc. | Medical devices including metallic films |
JP5116244B2 (en) * | 2006-03-20 | 2013-01-09 | 株式会社デンソー | COMMUNICATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND PROGRAM |
TWI413409B (en) * | 2008-11-06 | 2013-10-21 | Ind Tech Res Inst | Method for determining and changing radio frequency channel and radio frequency transmitting/receiving system using the same |
US9377519B2 (en) | 2013-03-12 | 2016-06-28 | Qualcomm Incorporated | Server-based mobile device regional candidate position fix mode selection |
US9247518B2 (en) | 2013-03-12 | 2016-01-26 | Qualcomm Incorporated | Mobile device positioning responsive to externally generated regional candidate position fix mode selection |
EP3182359A1 (en) * | 2015-12-15 | 2017-06-21 | Walter Hanke Mechanische Werkstätten GmbH & Co. KG | System for cashless payment for products or services |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0430173A2 (en) * | 1989-11-28 | 1991-06-05 | Nippon Telegraph And Telephone Corporation | Method of assigning radio communication channels to each of a plurality of mobile stations |
US5920819A (en) * | 1996-03-01 | 1999-07-06 | Kabushiki Kaisha Toshiba | Overlay cell type mobile communication system |
US6009332A (en) * | 1996-08-28 | 1999-12-28 | Telefonaktiebolaget Lm Ericsson | Method and system for autonomously allocating a frequency hopping traffic channel in a private radio system |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4675863A (en) * | 1985-03-20 | 1987-06-23 | International Mobile Machines Corp. | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
JPH0314329A (en) * | 1989-06-13 | 1991-01-23 | Matsushita Electric Ind Co Ltd | Cordless telephone system |
US5418839A (en) * | 1990-04-13 | 1995-05-23 | Phonemate, Inc. | Environmental adaptive mechanism for channel utilization in cordless telephones |
JP2750207B2 (en) * | 1990-05-23 | 1998-05-13 | 沖電気工業株式会社 | Optimal channel assignment method |
DE69128338T2 (en) * | 1991-01-08 | 1998-04-09 | Thomson Consumer Electronics | Automatic channel selection system for a cordless phone |
US5890069A (en) * | 1991-12-02 | 1999-03-30 | Lucent Technologies Inc. | Cordless telephone micro-cellular system |
US5752164A (en) * | 1992-04-27 | 1998-05-12 | American Pcs L.P. | Autonomous remote measurement unit for a personal communications service system |
US5530945A (en) * | 1993-08-31 | 1996-06-25 | At&T Corp. | Infrastructure equipment in a wireless communication system serves different service providers |
JPH07143549A (en) * | 1993-11-19 | 1995-06-02 | Nippon Telegr & Teleph Corp <Ntt> | Radio channel retrieval system |
FI98973C (en) * | 1994-11-22 | 1997-09-10 | Nokia Telecommunications Oy | Procedure for maintaining group data in a mobile telephone system as well as a mobile telephone system |
GB2301743B (en) * | 1995-06-02 | 2000-01-26 | Dsc Communications | Subscriber terminal for a wireless telecommunications system |
US5768380A (en) * | 1995-09-27 | 1998-06-16 | Motorola, Inc. | Method for sending a communication unit parameter to a plurality of communication units |
US6301482B1 (en) * | 1995-12-11 | 2001-10-09 | Stanford Telecommunications, Inc. | DMA cellular radio system with a channel quality criterion |
JPH09200846A (en) * | 1996-01-12 | 1997-07-31 | Matsushita Electric Ind Co Ltd | Mobile communication system |
US5740537A (en) * | 1996-01-30 | 1998-04-14 | Telefonaktiebolaget L M Ericsson (Publ) | Method and circuitry for selectively permitting communication in a multi-user communication system |
US5802456A (en) * | 1996-02-16 | 1998-09-01 | Motorola, Inc. | Method and apparatus to mitigate interference caused by an overlay communication system |
DE19616829C1 (en) * | 1996-04-26 | 1997-04-24 | Siemens Ag | Radio transfer system for digital signals between several subscriber terminals and base station |
US6223053B1 (en) * | 1996-06-26 | 2001-04-24 | Cisco Systems, Inc. | Universal radio for use in various cellular communication systems |
DE19700303B4 (en) * | 1997-01-08 | 2005-11-03 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Radio transmission method for digital multimedia signals between subscriber stations in a local area network |
US6212396B1 (en) * | 1997-03-27 | 2001-04-03 | Nortel Networks Limited | Generic handset programming and configuration |
US6075792A (en) * | 1997-06-16 | 2000-06-13 | Interdigital Technology Corporation | CDMA communication system which selectively allocates bandwidth upon demand |
JPH11234737A (en) * | 1998-02-16 | 1999-08-27 | Nippon Telegr & Teleph Corp <Ntt> | Radio communication channel assignment method |
US6170071B1 (en) * | 1998-07-27 | 2001-01-02 | Lucent Technologies, Inc. | Method for optimizing test fixtures to minimize vector load time for automated test equipment |
US6785540B1 (en) * | 1999-11-30 | 2004-08-31 | Agilent Technologies, Inc. | Monitoring system and method implementing test configuration logic |
-
2000
- 2000-04-22 EP EP00108736A patent/EP1148750A1/en not_active Withdrawn
-
2001
- 2001-04-07 DE DE60122130T patent/DE60122130T2/en not_active Expired - Lifetime
- 2001-04-07 WO PCT/EP2001/004017 patent/WO2001082644A1/en active IP Right Grant
- 2001-04-07 US US10/239,962 patent/US6975861B2/en not_active Expired - Lifetime
- 2001-04-07 JP JP2001578146A patent/JP4744767B2/en not_active Expired - Lifetime
- 2001-04-07 MX MXPA02010393A patent/MXPA02010393A/en active IP Right Grant
- 2001-04-07 AU AU46535/01A patent/AU4653501A/en not_active Abandoned
- 2001-04-07 KR KR1020027013136A patent/KR100719048B1/en active IP Right Grant
- 2001-04-07 EP EP01919441A patent/EP1279307B1/en not_active Expired - Lifetime
- 2001-04-07 CN CNB018173713A patent/CN1220407C/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0430173A2 (en) * | 1989-11-28 | 1991-06-05 | Nippon Telegraph And Telephone Corporation | Method of assigning radio communication channels to each of a plurality of mobile stations |
US5920819A (en) * | 1996-03-01 | 1999-07-06 | Kabushiki Kaisha Toshiba | Overlay cell type mobile communication system |
US6009332A (en) * | 1996-08-28 | 1999-12-28 | Telefonaktiebolaget Lm Ericsson | Method and system for autonomously allocating a frequency hopping traffic channel in a private radio system |
Also Published As
Publication number | Publication date |
---|---|
KR20030040200A (en) | 2003-05-22 |
AU4653501A (en) | 2001-11-07 |
US20030078049A1 (en) | 2003-04-24 |
JP4744767B2 (en) | 2011-08-10 |
MXPA02010393A (en) | 2003-04-25 |
KR100719048B1 (en) | 2007-05-17 |
US6975861B2 (en) | 2005-12-13 |
EP1148750A1 (en) | 2001-10-24 |
DE60122130D1 (en) | 2006-09-21 |
CN1470142A (en) | 2004-01-21 |
EP1279307A1 (en) | 2003-01-29 |
JP2003533079A (en) | 2003-11-05 |
EP1279307B1 (en) | 2006-08-09 |
DE60122130T2 (en) | 2006-12-14 |
CN1220407C (en) | 2005-09-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0641136B1 (en) | Low-power wireless system for telephone services | |
KR100265527B1 (en) | Power control method in wireless networks for communicating multiple information classes | |
US7738876B1 (en) | Radio resource management for wireless local area networks | |
US6564052B1 (en) | Wireless local loop system and method for wireless link control | |
WO2007055623A1 (en) | Method and apparatus for limiting peer-to-peer communication interference | |
WO1993014579A1 (en) | Method and apparatus for dynamic channel allocation | |
GB2322522A (en) | Call set-up method in a radio communication system | |
JPH08168070A (en) | Method for selecting radio base station of cellular mobile radio communication system | |
US6697627B1 (en) | Base station selection system, apparatus and method for a wireless local area network (LAN) | |
US6975861B2 (en) | Channel preselection method for a RF communication system | |
EP1483927B1 (en) | Radio resource allocation in a radio communication network | |
EP1271978A2 (en) | CDMA system and method of detecting faulty mobile device | |
WO2000030388A1 (en) | Channel allocation method and cellular radio system | |
US6694140B2 (en) | Channel entering method for a wireless communication system and subscriber station | |
EP0892569A2 (en) | A method of and a system for assigning a downlink channel for mobile radio communication | |
JP2681007B2 (en) | Communication line allocation method in mobile communication system | |
KR100552129B1 (en) | Method for determining a candidate cell active set | |
CN101019443A (en) | Seamless channel change in a wireless local area network | |
EP0940938A1 (en) | CDMA mobile telecommunication method and system | |
US7424299B1 (en) | System and method for slot allocation with reduced need for measurement | |
EP1156690B1 (en) | Channel acquisition method for a wireless communication system and subscriber station | |
JP3275726B2 (en) | Wireless line connection method | |
CN101167277A (en) | Method and apparatus for generating loud packets to estimate path loss | |
MXPA96006390A (en) | Methods to make active channel measurements in a personal base station environment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AU BA BB BG BR CA CN CR CU CZ DM DZ EE GD GE HR HU ID IL IN IS JP KP KR LC LK LR LV MA MG MK MN MX NO NZ PL RO SG SI SK TT UA US UZ VN YU ZA |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 10239962 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020027013136 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2001919441 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref country code: JP Ref document number: 2001 578146 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: PA/a/2002/010393 Country of ref document: MX |
|
WWE | Wipo information: entry into national phase |
Ref document number: 018173713 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 2001919441 Country of ref document: EP |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWP | Wipo information: published in national office |
Ref document number: 1020027013136 Country of ref document: KR |
|
WWG | Wipo information: grant in national office |
Ref document number: 2001919441 Country of ref document: EP |