Radio base stations and wireless terminal for dual connectivity, methods therein and a system

Abstract

Embodiments herein relate to a system for enabling communication in the radio communications network (). The system comprises the first radio base station (), the second radio base station () and the wireless terminal (). The first radio base station () and the second radio base station () are configured to serve the wireless terminal () simultaneously. The first radio base station () is configured to set up to the wireless terminal (), a first channel for receiving data over from the wireless terminal (), and a first assisting channel for transmitting feedback data regarding transmissions over the first channel. The second radio base station () is configured to set up to the wireless terminal (), a second channel for transmitting data over to the wireless terminal (), and a second assisting channel for receiving, from the wireless terminal (), feedback data regarding transmissions over the second channel.