Phase shifted time slice transmission to improve handover
Abstract
The present invention provides methods and apparatus for a wireless system broadcasting a plurality of data packets to at least one wireless terminal. The wireless system comprises a plurality of base stations that interfaces to a backbone network in order to receive the plurality of data packets from a service source. Data packets are sent to a wireless terminal by a first base station transmitting a first channel burst and by a second base station transmitting a second channel burst, in which corresponding time offsets of the channel bursts, as characterized by amounts phase shifts, are different. Consequently, when the wireless terminal executes a handover from the first base station to the second base station, a probability that some of the data packets are lost, as result of practical network considerations, is reduced.
Term
Term ended
Projected expiry passed 4 September 2023, 3.1 years ago.
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Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP0881785A1 | Cites | European Patent Office (EPO) | X | Search report | 1,2,10,11,19 |
| US6021122A | Cites | United States of America | A | Search report | 23,24 |
| EP0881785A | Cites | European Patent Office (EPO) | – | – | – |
23 members in 11 offices
Priority claims9
| Document | Office | Kind | Date |
|---|---|---|---|
| 237404 | United States of America | – | |
| 23740402 | United States of America | A | |
| 23740402 | United States of America | A | |
| 0303753 | International Bureau of the World Intellectual Property Organization (WIPO) | W | |
| 0303753 | International Bureau of the World Intellectual Property Organization (WIPO) | W | |
| 237404 | – | – | – |
| IB2003003753 | – | – | – |
| US20020237404 | – | – | – |
| WO2003IB03753 | – | – | – |
Members23
| Document | Office | Kind | |
|---|---|---|---|
| US2004047311A1 | United States of America | A1 | |
| CA2497308A1 | Canada | A1 | |
| WO2004023695A2 | World Intellectual Property Organization (WIPO) | A2 | |
| AU2003259410A1 | Australia | A1 | |
| AU2003259410A8 | Australia | A8 | |
| WO2004023695A3 | World Intellectual Property Organization (WIPO) | A3 | |
| KR20050028060A | Republic of Korea | A | |
| EP1535479A2 | European Patent Office (EPO) | A2 | |
| BR0313933A | Brazil | A | |
| CN1682544A | China | A | |
| JP2005538594A | Japan | A | |
| US7058034B2 | United States of America | B2 | |
| US2006126566A1 | United States of America | A1 | |
| KR100623269B1 | Republic of Korea | B1 | |
| EP1535479A4This record | European Patent Office (EPO) | A4 | |
| CN100556208C | China | C | |
| EP1535479B1 | European Patent Office (EPO) | B1 | |
| AT476798T | Austria | T | |
| ATE476798T1 | Austria | T1 | |
| DE60333649D1 | Germany | D1 | |
| JP4559857B2 | Japan | B2 | |
| CA2497308C | Canada | C | |
| US7894399B2 | United States of America | B2 |
63 legal events, as 7 offices reported them to INPADOC
Over the term
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Notification of lapseLapsedST | ST | FR | |
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | EP | |
| Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal feeWithdrawnR119 | R119 | DE | |
| Transmission of propertyTP | TP | FR | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Change of applicant/patenteeR081 | R081 | DE | |
| Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)REGISTERED BETWEEN 20150910 AND 20150916732E | 732E | GB | |
| Fee paymentPLFP | PLFP | FR | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| No opposition filed against granted patent, or epo opposition proceedings concluded without decisionGrantedR097 | R097 | DE | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| No opposition filedOpposition26N | 26N | EP | |
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| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Patent ceasedCeasedPL | PL | CH | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Discontinued in the netherlands as no translation has been filedVDEP | VDEP | NL | |
| Corresponds to:REF | REF | EP | |
| European patents granted designating irelandGrantedFG4D | FG4D | IE | |
| European patent takes effect as a national patent in ch/liEP | EP | CH | |
| Designated contracting statesAK | AK | EP | |
| European patent grantedGrantedFG4D | FG4D | GB | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS | GRAS | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP | GRAP | EP | |
| Information provided on ipc code assigned before grantRIC1 | RIC1 | EP | |
| Information provided on ipc code assigned before grantRIC1 | RIC1 | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Supplementary search report drawn up and despatchedA4 | A4 | EP | |
| Information provided on ipc code assigned before grantRIC1 | RIC1 | EP | |
| Information provided on ipc code assigned before grantRIC1 | RIC1 | EP | |
| Request for extension of the european patent (deleted)DAX | DAX | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAX | AX | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 1535479
- Publication, DOCDB
- 1535479
- Publication, EPODOC
- EP1535479
- Application
- 3793966
- Application, DOCDB
- 03793966
- Application, EPODOC
- EP20030793966
Titles3
- German
- PHASENVERSCHOBENE ZEITSCHLITZÜBERTRAGUNG ZUR VERBESSERUNG VOM WEITERREICHEN
- English
- PHASE SHIFTED TIME SLICE TRANSMISSION TO IMPROVE HANDOVER
- French
- EMISSION PAR TRANCHES DE TEMPS DEPHASEES PERMETTANT D'AMELIORER LES TRANSFERTS
Classification
- CPC, 5
- H04L47/34
- H04B7/2656
- H04W36/00
- H04W36/0007
- H04W72/30
- IPC, 4
- H04B7 26
- H04L12 56
- H04W36 08
- H04Q7 38
Designated states1
- Contracting states, 1
- Türkiye