US 12,015,489 B2
Communication transmitter for retransmitting medium access control (MAC) protocol data unit (MPDU)
Shimon Shilo, Hod Hasharon (IL); Nadav Basson, Hod Hasharon (IL); Ezer Melzer, Hod Hasharon (IL); Yaron Ben-Arie, Hod Hasharon (IL); Mor Reich, Hod Hasharon (IL); and Doron Ezri, Hod Hasharon (IL)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Nov. 8, 2021, as Appl. No. 17/521,456.
Application 17/521,456 is a continuation of application No. PCT/EP2019/061701, filed on May 7, 2019.
Prior Publication US 2022/0069949 A1, Mar. 3, 2022
Int. Cl. H04L 1/1812 (2023.01); H04L 1/08 (2006.01)
CPC H04L 1/1819 (2013.01) [H04L 1/08 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A communication transmitter for retransmitting a medium access control (MAC) protocol data unit (MPDU) to a communication receiver over a communication channel using a hybrid automatic repeat request (HARQ) retransmission scheme, the MPDU comprising a plurality of information bits, the communication transmitter comprising:
a processor configured to:
determine the MPDU to be retransmitted based on a block acknowledgement (Block ACK) frame received from the communication receiver, the Block ACK frame indicating previously correctly decoded MPDUs at the communication receiver, and to generate a bit sequence to be transmitted to the communication receiver, wherein the bit sequence comprises the plurality of information bits, the plurality of information bits being associated with a plurality of log likelihood ratio (LLRs), the plurality of LLRs being configured to be combined at the communication receiver with a plurality of LLRs associated with a previously received MPDU, wherein the bit sequence further comprises a plurality of parity bits;
determine a further plurality of LLRs associated with the plurality of parity bits, and to include a subgroup of the determined further plurality of LLRs associated with the plurality of parity bits in the bit sequence; and
a communication interface configured to transmit the bit sequence to the communication receiver for retransmitting the MPDU to the communication receiver.