公开(公告)号：US11736227B1

公开(公告)日：2023-08-22

申请号：US17475132

申请日：2021-09-14

Applicant: Amazon Technologies, Inc.

Inventor： Songping Wu ,  Tianxiang Zhou ,  Qian Liu ,  Ming-Wei Liu

IPC: H04W4/06 ,  H04L1/00 ,  H04W84/12

CPC classification number: H04L1/0033 ,  H04W84/12

Abstract: Technologies directed to hash spreading to extend a wireless coverage are described. One method includes receiving input bits and control information that specifies a first data rate and a second modem scheme having a second signal range that is greater than a first signal range corresponding to a first modem scheme. The method generates a first sequence of bits by scrambling the input bits, the first sequence of bits having a first number of bits. The method generates a second sequence of bits by hash spreading the first sequence of bits using a set of spreading codes. The second sequence of bits has a second number of bits greater than the first number of bits. The method generates first symbols by modulating the second sequence, converts the first symbols into radio frequency (RF) signals, and sends the RF signals to the second wireless device.