Patent ID: 9391754
Filing Date: 2016-07-12
CPC Classification: H04B,H04L

Claim Text:
1. A method of operating a node of a multiple-input-multiple-output (MIMO) radio access network, the method comprising: transmitting a first hybrid automatic repeat request (HARQ) process identification for a first data block, a first initial redundancy version for the first data block, and a second hybrid automatic repeat request process identification for second and third data blocks over a downlink signaling channel to a wireless terminal for a first MIMO transmission time interval (TTI) wherein the first HARQ process identification is mapped to a first MIMO data transmission layer, and wherein the second HARQ process identification is mapped to second and third MIMO data transmission layers; transmitting the first, second, and third data blocks over the first, second, and third MIMO data transmission layers, respectively, to the wireless terminal for the first MIMO TTI; responsive to receiving an acknowledgment (ACK) message associated with the first HARQ process identification from the wireless terminal for the first MIMO TTI, transmitting the first hybrid automatic repeat request process identification and a second initial redundancy version for a fourth data block over the downlink signaling channel to the wireless terminal for a second MIMO TTI; responsive to receiving the ACK message associated with the first HARQ process identification from the wireless terminal for the first MIMO TTI, transmitting the fourth data block over the first MIMO data transmission layer to the wireless terminal for the second MIMO TTI; and responsive to receiving a negative acknowledgment (NACK) message associated with the second HARQ process identification from the wireless terminal for the first MIMO TTI, retransmitting the second and third data blocks over the second and third MIMO data transmission layers to the wireless terminal for the second MIMO TTI.