Signal transmission method for multi-antenna multi-user time division duplex communication system
US11304158B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2018 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Dec 6, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0023
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed in the present invention is a signal transmission method for a multi-antenna multi-user TDD communication system. Each frame of the TDD communication system includes one forward downlink frame synchronization signal, multiple downlink data time slots, and multiple uplink data time slots; the downlink frame synchronization signal is a broadcast signal, the base station sends the downlink frame synchronization signal to all terminals, and after each terminal receives the downlink frame synchronization signal, time and frequency synchronization is performed with reference to the base station to acquire the start time and end time of each uplink data time slot. The synchronization signal received power P is evaluated and compared with the synchronization signal received power range of all uplink data time slots in the frame, and all terminals falling into the synchronization signal received power range of the uplink data time slot k select the uplink data time slot k to send data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.