TCP-aware agent sublayer (TAS) for robust TCP over wireless
US6208620A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Aug 2, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/0011
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed is a system for minimizing the effects of faults over an air link of a wireless transmission channel utilizing Transport Control Protocol (TCP). The system includes a TCP-Aware Agent Sublayer (TAS) in a protocol stack, which has a mechanism for caching both TCP packets during forward transmission and acknowledgment (ACK) return packets. The caching mechanism is located near a wireless link of the wireless transmission channel. The system also includes a link monitoring agent coupled to the TAS. The link monitoring agent monitors the condition of the wireless transmission channel for an occurrence of a predefined fault. Once a predefined fault is detected, a system response is implemented based on the type of fault encountered. When the fault is an air link packet loss, an associated packet is immediately retransmitted from the cache, and when the fault is a temporary disconnect, a congestion window of the TCP source is closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.