HARQ AND LINK ADAPTATION IN WIRELESS COMMUNICATION SYSTEM

An electronic device receives a first data unit including a first hybrid automatic repeat request (HARQ) unit and transmits a second data unit including first HARQ-related information indicating that the first HARQ unit fails to be decoded. The electronic device receives a third data unit including a preamble. The preamble includes a first STF, a first LTF, a signal field, a second STF, and a second LTF, and the third data unit includes second HARQ-related information indicating whether the third data unit includes retransmitted data. The electronic device obtains a second HARQ unit based on a determination that the second HARQ related information indicates that the third data unit includes the retransmitted data, and decodes the second HARQ unit using the first HARQ unit. 一种电子设备接收包括第一混合自动重复请求(HARQ)单元的第一数据单元并发送包括指示所述第一HARQ单元未能被解码的第一HARQ相关信息的第二数据单元。所述电子设备接收包括前导码的第三数据单元。所述前导码包括第一STF、第一LTF、信号字段、第二STF和第二LTF，并且所述第三数据单元包括指示所述第三数据单元是否包括重传的数据的第二HARQ相关信息。所述电子设备基于确定第二HARQ相关信息指示所述第三数据单元包括重传的数据来获得第二HARQ单元，并且利用第一HARQ单元对第二