System and method for hidden node resolution via collision avoidance in 4G automatic link establishment (ALE) stations
US11678372B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2021 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Nov 29, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for collision avoidance within nodes of an Automatic Link Exchange (ALE) network establishes a handshake between transmitting and receiving nodes for a linked call over an assigned frequency band. The transmitting and receiving nodes mutually determine transmission and reception sub-channel vectors within the assigned frequency band, e.g., for calling and response. Before the linked call commences, and when other scanning stations of the ALE network dwell on the assigned frequency band, the transmitting and receiving nodes transmit collision avoidance protocol data units (PDU) identifying the nodes, the transmission and reception sub-channel vectors, and the duration of the linked call such that scanning nodes may prevent interference with the linked call by avoiding transmission over the identified sub-channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.