MAC and TCP coordination approach for performance improvement in IEEE 802.16e mobile broadband access systems
US8681742B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2011 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | May 11, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/0019
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A mobile device includes a communications protocol stack including a MAC layer and TCP layer separated by an IP layer. A cross-layer coordination module parallel to the communications protocol stack is coupled to both the MAC layer and TCP layer. The MAC layer generates a message sent to the cross-layer coordination module indicating that the mobile device is about to engage in a communications handover from a first base station to a second base station. The cross-layer coordination module passes handover information to the TCP layer so as to inform the TCP layer of the communications handover. If the mobile device is operating as a TCP sender, the TCP layer freezes its connection and state during the communications handover. If the mobile device is operating as a TCP receiver, the TCP layer sends a TCP ACK message to a TCP sender having an advertised window size set to a zero value so as to cause the TCP sender to freeze a connection and state during communications handover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.