Method and apparatus for switching spread spectrum/code division multiple access modulated beams
Abstract
Switching of traffic channels within spread spectrum beams is performed in a satellite without buffering of the individual signals. Individual satellite beams carrying spread spectrum user RF signals from a plurality of customer premise equipments are received by radio receivers of a satellite switch and downconverted to IF signals. Traffic channel recovery is performed immediately after the down conversion and digital encoding and decoding is performed to route each channel to an appropriate outbound satellite beam. Traffic channel recovery is by despreading and filtering followed by respreading to uniquely identify each user signal so it may be recovered at its end destination. Further spreading uniquely identifies the user signal with an outbound satellite beam going to the intended destination of the user signal.

Term
Term ended
Projected expiry passed 22 April 2017, 9.4 years ago.
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1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP0568291A2 | Cites | European Patent Office (EPO) | A | Search report | 1,6,10 |
| US4901307A | Cites | United States of America | A | Search report | 1,6,10 |
| US5602833A | Cites | United States of America | AP | Search report | 1,6,10 |
9 members in 6 offices; this record represents the family
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 635163 | United States of America | – | |
| 63516396 | United States of America | A |
Members9
| Document | Office | Kind | |
|---|---|---|---|
| CA2197129A1 | Canada | A1 | |
| EP0803993A2 | European Patent Office (EPO) | A2 | |
| AU1899597A | Australia | A | |
| JPH1056437A | Japan | A | |
| MX9702849A | Mexico | A | |
| US5815527A | United States of America | A | |
| EP0803993A3This record | European Patent Office (EPO) | A3 | |
| CA2197129C | Canada | C | |
| AU721340B2 | Australia | B2 |
9 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Application withdrawnWithdrawn18W | 18W | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION HAS BEEN WITHDRAWNSTAA | STAA | |
| First examination report despatched17Q | 17Q | |
| Request for examination filed17P | 17P | |
| Designated contracting statesAK | AK | |
| Information provided on ipc code assigned before grant6H 04B 7/216 A, 6H 04B 7/185 BRIC1 | RIC1 | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | |
| Designated contracting statesAK | AK | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI |
Numbers
- Publication
- 0803993
- Application
- 971066659
Titles3
- German
- Verfahren und Gerät zur Schaltung von Spreizspektrumkodemultiplexvielfachzugriff-modulierten Strahlen
- English
- Method and apparatus for switching spread spectrum/code division multiple access modulated beams
- French
- Méthode et appareil pour commuter des pinceaux modulés à spectre étalé et à accès multiple par division de codes
Classification
- CPC, 1
- H04B7/216
- IPC, 1
- H04B7 216
Designated states1
- Contracting states, 1
- Netherlands (Kingdom of the)