Connection arrangement in relayed wireless communications

摘要

The present document describes a distributed communication arrangement, wherein a radio access network of a wireless telecommunication system provides a terminal device with two logical communication connections. Both uplink and downlink of a first logical connection are routed between a base station and the terminal device through a relay node. Uplink of a second logical connection is also routed between the base station and the terminal device through the relay node. Downlink of the second logical connection is, however, transmitted directly from the base station to the terminal device. Such an arrangement is used for cooperative communication purposes.

主权项

1. A method, comprising:
establishing, in a network element of a radio access network, a wireless communication connection with a terminal device; communicating with the terminal device over a first logical connection comprising an uplink physical connection and a downlink physical connection both routed through a relay node; communicating with the terminal device over a second logical connection comprising an uplink physical connection and a downlink physical connection, wherein only the uplink physical connection is routed through the relay node; distributing downlink automatic repeat request processes in relation to the second logical connection amongst the base station and the relay node; capturing in the relay node a data packet of a downlink hybrid automatic repeat request process of the second logical connection from a message transmitted from the base station directly to the terminal device; determining in the relay node that the data packet of the downlink hybrid automatic repeat request was not received in the terminal device; and carrying out in the relay node retransmission of the captured data packet to the terminal device.