Synchronization of terminals in a radio link system
First Claim
1. A terminal for a radio link system operating in time division duplex mode, comprising means for receiving synchronization information from a second terminal via a synchronization bus, means for transmitting synchronization information to a plurality of second terminals via a synchronization bus, and means for adjusting transmission periods according to received synchronization information.
1 Assignment
0 Petitions
Accused Products
Abstract
The objective of the invention is to increase the potential hop density of single frequency TDD radio links by allowing a set of closely located terminals to use a single channel. This is possible when transmission and reception periods of the terminals are synchronized so that the transmit period of any of the terminals in a terminal group does not overlap with the receive period of any of the terminals in the group. Synchronization is achieved by selecting at least one terminal in a hub site as a super master terminal. This terminal gives timing through a common bus to the rest of the terminals in the group These terminals use the received timing for adjusting their own timing i.e. for adjusting the starting moment and ending moment of the transmission and reception periods in such a manner that none of terminals is sending a burst while another terminal is receiving.
40 Citations
10 Claims
-
1. A terminal for a radio link system operating in time division duplex mode, comprising
means for receiving synchronization information from a second terminal via a synchronization bus, means for transmitting synchronization information to a plurality of second terminals via a synchronization bus, and means for adjusting transmission periods according to received synchronization information.
-
5. A terminal for a radio link system operating in time division duplex mode, wherein the terminal is configured to
receive synchronization information from a second terminal via a synchronization bus, and adjust transmission periods according to received synchronization information.
- 8. A terminal for a radio link system operating in time division duplex mode, wherein the terminal is configured to transmit synchronization information to a plurality of second terminals via a synchronization bus.
Specification