Single slot bi-directional message exchange in relay networks

摘要

Technologies are generally provided for single-slot bi-directional message exchange that allows two nodes to transmit in the same time-slot at the same frequency. The transmissions may be relayed to the destination node within the same time-slot. An interfering signal generated by each node may appear time-offset in the same time slot as it was transmitted, superimposed on the message signal from the other terminal. Roundtrip and cross-trip delay estimates and channel estimates may be determined at each node. Transmitted signals may be recovered at the destination nodes based on the roundtrip and cross-trip delay estimates and channel estimates.

主权项

1. A method to provide single-slot bi-directional message exchange between a first transceiver and a second transceiver, the method comprising:
transmitting, by the first transceiver, a first signal in a first time slot at a carrier frequency; receiving, by the first transceiver while transmitting in the first time slot, a relay signal at the carrier frequency, wherein the relay signal is a combination of the first signal and a second signal; determining, by the first transceiver, a transformed first signal based on the first signal, a roundtrip delay estimate, and a roundtrip channel estimate; subtracting, by the first transceiver, the transformed first signal from the relay signal to recover a transformed second signal; and recovering, by the first transceiver, the second signal based on the transformed second signal, a cross-trip delay estimate and a cross-trip channel estimate.