Reverse-link interference canceling in HAPS multi-feeder link
US11683084B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2020 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Mar 18, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0617
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
It is dynamically suppressed of a downlink interference in a reverse link of a multi-feeder link of a same frequency between an aerial-staying type communication relay apparatus and plural gateway (GW) stations. A relay communication station of the communication relay apparatus estimates plural propagation path responses respectively between plural GW stations and an antenna for feeder link of the communication relay apparatus based on reception results of plural pilot signals received from each of plural GW stations. The relay communication station calculates a weight for suppressing an interference signal that causes an interference by a transmission signal transmitted from a relay communication station to the GW station and received by another GW station, based on the plural propagation path responses, with respect to each of the plural GW stations. The relay communication station adds or subtracts, for the transmission signal to be transmitted to the GW station, a transmission signal to be transmitted to another gateway station that is multiplied by the weight corresponding to the other gateway station, with respect to each of the plural GW stations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.