Communication system and method
US9198123B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2013 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Jan 12, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W48/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A modem is disclosed, one embodiment including: first and second interface apparatuses; and a processing apparatus arranged to transmit a request message to part of a wireless cellular network to request establishment of a channel to access a packet-based network, wherein the request message requests the channel as being of a type that supports both a first and second version of a packet protocol; receive a response message indicating rejection of the request, and upon detecting that a field in the response message defines a reason other than the part of the wireless cellular network does not support first and second versions of the packet protocol on a single channel, to default to transmit a default request message to request establishment of a channel to access the packet-based network, the default request message requests the channel as being of a type that supports the first version of the packet protocol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.