Fast handover method for IEEE 802.11 wireless LAN networks
Abstract
A fast handover method optimized for IEEE 802.11 networks. In a wireless local area system including a mobile terminal and at least two wireless access points (APs) that communicate with the mobile terminal over a unique radio channel, the fast handover method includes receiving a beacon frame signal from the serving AP and the neighbor APs of the mobile terminal; generating a first signal to determine a state of each of the neighbor APs based on the beacon frame signal received from each of the neighbor APs; comparing the first signal with predefined thresholds, classifying the neighbor APs into a detected AP, a candidate AP, and a target AP according to a result of the comparison, and storing the classification result in a neighbor AP list; and selecting an AP for the handover based on the classification result in the neighbor AP list.

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| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP1418711A2 | Cites | European Patent Office (EPO) | Y | Search report | 1-79 |
| EP1458209A2 | Cites | European Patent Office (EPO) | PX | Search report | 59,77-79 |
| WO9616524A2 | Cites | World Intellectual Property Organization (WIPO) | Y | Search report | 1-79 |
| WO9706648A1 | Cites | World Intellectual Property Organization (WIPO) | A | Search report | 10,11,16,18,59,69-71,77-79 |
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Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 2004034958 | Republic of Korea | – | |
| 20040034958 | Republic of Korea | A | |
| 2005038890 | Republic of Korea | – | |
| 20050038890 | Republic of Korea | A |
Members11
| Document | Office | Kind | |
|---|---|---|---|
| US2005255847A1 | United States of America | A1 | |
| CN1700669A | China | A | |
| EP1599062A2 | European Patent Office (EPO) | A2 | |
| JP2005333648A | Japan | A | |
| KR20060046019A | Republic of Korea | A | |
| KR100643766B1 | Republic of Korea | B1 | |
| JP4054341B2 | Japan | B2 | |
| EP1599062A3This record | European Patent Office (EPO) | A3 | |
| CN100499543C | China | C | |
| US7676226B2 | United States of America | B2 | |
| EP1599062B1 | European Patent Office (EPO) | B1 |
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Numbers
- Publication
- 1599062
- Application
- 50106756
Titles3
- German
- Verfahren zum schnellen Weiterreichen in IEEE 802.11 drahtlosen LAN Netzen
- English
- Fast handover method for IEEE 802.11 wireless LAN networks
- French
- Procédé de transfert rapide pour des réseaux locaux sans fil IEEE 802.11
Classification
- CPC, 4
- H04W36/00835
- H04W36/0061
- H04W84/12
- H04W36/302
- IPC, 10
- H04Q7 38
- H04L12 28
- H04L12 56
- H04W36 00
- H04W36 08
- H04W36 30
- H04W36 36
- H04W80 04
- H04W84 12
- H04W88 08
Designated states36
- Contracting states, 30
- Austria
- Belgium
- Bulgaria
- Switzerland
- Cyprus
- Czechia
- Germany
- Denmark
- Estonia
- Spain
- Finland
- France
- United Kingdom
- Greece
- Hungary
- Ireland
- Iceland
- Italy
- Liechtenstein
- Lithuania
- Luxembourg
- Monaco
- Netherlands (Kingdom of the)
- Poland
and 6 moreShow fewer
- Portugal
- Romania
- Sweden
- Slovenia
- Slovakia
- Türkiye
- Extension states, 6
- Albania
- Bosnia and Herzegovina
- Croatia
- Latvia
- North Macedonia
- Yugoslavia, later Serbia and Montenegro (until 2006)