Method and device for prompt and efficient service discovery in wireless networks
US6961560B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2002 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Dec 19, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/51
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods, system and apparatus are provided for advertising service offerings in a communication system. An example embodiment comprises at least one device. A first device broadcasts a message of a first type, chooses a value for a time limit and listens for a message sent by a second device. If no message has been received before time limit, elapse, it again broadcasts a message of a first type. Otherwise, the message received from said second device is analyzed and if said message includes valid information about said first device chooses a value for the time limit. However, if said message received does not include valid service description about said first device, a message of a second type is broadcast. This reduces useless broadcast of a complete service list. Broadcast may be initiated more often and, service discovery for new devices coming into proximity takes less time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.