Access retry method for shared channel wireless communications links
Abstract
Each remote station in a wireless network cell that uses a collision oriented multiple access scheme, counts the number of retries attempted to gain access to the base station for a particular message. The accumulated value of the number of retries is then inserted in a retry count field of the access request message. After one or more retries, the base station successfully receives the access request message. The base station runs a common access channel allocation manager program that adaptively provides additional channels to the remote station, depending on the number of retries the remote station required to successfully transmit the access request message. In this manner, the base station has accurate information about the reduced performance that the remote stations suffer during an interval of high usage, to enable the base station to adaptively provide additional channels to the remote stations.

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Projected expiry passed 25 February 2019, 7.6 years ago.
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1 sheet
Sheet 1
Every citation, both waysCites: the store holds 14 of 15
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP0475698A2 | Cites | European Patent Office (EPO) | XAY | Search report | 1,3,4,6-12,14,15,17-22,31-44 |
| EP0590252A1 | Cites | European Patent Office (EPO) | YA | Search report | 5,16 |
| EP0616480A2 | Cites | European Patent Office (EPO) | A | Search report | 1,9,12,20,31,35,38,42 |
| GB2293947A | Cites | United Kingdom | A | Search report | 1,9,12,20,31,35,38,42 |
| GB2313981A | Cites | United Kingdom | A | Search report | 1,10,12,21,31,36,38,43 |
| GB2315388A | Cites | United Kingdom | A | Search report | 1,10,12,21,32,36,38,43 |
| US5121391A | Cites | United States of America | YA | Search report | 5,16 |
| US5220593A | Cites | United States of America | A | Search report | 23,27 |
| US5280630A | Cites | United States of America | YA | Search report | 2,13 |
| US5481611A | Cites | United States of America | A | Search report | 23,27 |
| US5680633A | Cites | United States of America | YA | Search report | 23,25,27,29,30 |
| US5697059A | Cites | United States of America | YA | Search report | 2,13 |
| US5722067A | Cites | United States of America | A | Search report | 23,27 |
| WO9512942A1 | Cites | World Intellectual Property Organization (WIPO) | A | Search report | 1,11,12,22,31,37,38,44 |
| ANDREW S. TANENBAUM: "Computer Networks / third edition", 1996, PRENTICE HALL, UPPER SADDLE RIVER, NJ, USA, XP002185757 | Non-patent | – | – | Search report | – |
6 members in 4 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 35287 | United States of America | – | |
| 3528798 | United States of America | A | |
| 35287 | – | – | – |
| US19980035287 | – | – | – |
Members6
| Document | Office | Kind | |
|---|---|---|---|
| CA2262359A1 | Canada | A1 | |
| EP0940949A2 | European Patent Office (EPO) | A2 | |
| BR9917145A | Brazil | A | |
| US6333937B1 | United States of America | B1 | |
| EP0940949A3This record | European Patent Office (EPO) | A3 | |
| CA2262359C | Canada | C |
11 legal events, as 2 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Application deemed to be withdrawnWithdrawn18D | 18D | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA | STAA | EP | |
| Designated country de not longer valid8566 | 8566 | DE | |
| Designation fees paidAKX | AKX | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAL;LT;LV;MK;RO;SIAX | AX | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Information provided on ipc code assigned before grant7H 04L 12/28 A, 7H 04L 12/413 B, 7H 04L 29/06 BRIC1 | RIC1 | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAL;LT;LV;MK;RO;SIAX | 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
- 0940949
- Publication, DOCDB
- 0940949
- Publication, EPODOC
- EP0940949
- Application
- 99301379
- Application, DOCDB
- 99301379
- Application, EPODOC
- EP19990301379
Titles3
- German
- Zugriffswiederholungsverfahren für drahtlose Übertragungsverbindungen mit geteilten Kanälen
- English
- Access retry method for shared channel wireless communications links
- French
- Méthode de reprise d'accés pour liaison de communication sans fil aux canals partagés
Classification
- CPC, 3
- H04W72/044
- H04W24/00
- H04W74/00
- IPC, 2
- H04L12 28
- H04L12 56
Designated states2
- Contracting states, 1
- Sweden
- Extension states, 1
- Slovenia