Method and apparatus for synchronous HARQ operation and interference avoidance

摘要

A method and apparatus for avoiding a collision. A collision may be avoided by allocating a first set of subframes to a backhaul link transmission, and allocating a second set of subframes to an access link transmission. In one example, the second set of subframes may be a non-overlapping set of subframes with respect to the first set of subframes. In a second embodiment, a collision may be avoided by receiving a data transmission from an evolved Node-B (eNB) and transmitting an uplink (UL) grant to a wireless transmit/receive unit (WTRU) and a first acknowledgement (ACK) to the eNB. The transmission may be in response to the received data transmission. The RN may avoid a collision by further transmitting an automatic ACK to the WTRU and transmitting a second UL grant to the WTRU. In a third embodiment, a collision between an access link transmission and a backhaul link transmission may be avoided by detecting a collision and determining an interface priority based on a collision occurrence type.

主权项

1. A node for avoiding a collision between an access link transmission and a backhaul link transmission, the node comprising:
a receiver configured to receive, from a second node, a first subframe including one of a downlink (DL) or an uplink (UL) resource grant and a variable offset, wherein the variable offset shifts a schedule for all hybrid automatic repeat request (HARQ) communications in a HARQ timeline for a communication by a number of subframes with respect to the first subframe; and a transmitter configured to transmit, to a wireless transmit/receive unit (WTRU), a DL transmission in a second subframe, wherein the second subframe is based on the variable offset.