Positioning method and apparatus, and communication device
AssigneeVivo Mobile Communication Co., Ltd.
InventorsDajie Jiang, Jianming Wu
Life of this patent
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Abstract
A positioning method includes receiving, by a backscatter end, a first signal sent by a first communication device; modulating, by the backscatter end, the first signal based on a second reference signal modulation sequence or a third reference signal modulation sequence to obtain a second signal; and sending, by the backscatter end, the second signal to a second communication device. The second reference signal modulation sequence is an orthogonal sequence determined based on binary phase shift keying BPSK modulation information. The third reference signal modulation sequence is determined based on the second reference signal modulation sequence.
Claims20
A positioning method, comprising:
- receiving, by a backscatter end, a first signal sent by a first communication device;
- modulating, by the backscatter end, the first signal based on a second reference signal modulation sequence or a third reference signal modulation sequence to obtain a second signal;
- and
- sending, by the backscatter end, the second signal to a second communication device, wherein
- the second reference signal modulation sequence is an orthogonal sequence determined based on binary phase shift keying (BPSK) modulation information, and the third reference signal modulation sequence is determined based on the second reference signal modulation sequence.
A positioning method, wherein the method comprises:
- receiving, by a second communication device, a target signal, wherein the target signal comprises at least a first signal sent by a first communication device and/or a second signal sent by at least one backscatter end;
- and
- positioning, by the second communication device, at least one of the first communication device, the second communication device, or a target backscatter end based on the first signal and/or at least one second signal, wherein
- the target backscatter end is any one of the at least one backscatter end, the second signal is obtained by modulating the first signal based on a second reference signal modulation sequence or a third reference signal modulation sequence, the second reference signal modulation sequence is an orthogonal sequence determined based on binary phase shift keying (BPSK) modulation information, and the third reference signal modulation sequence is determined based on the second reference signal modulation sequence.
A positioning method, comprising either of the following:
- sending, by a network-side device, a second reference signal modulation sequence and/or a third reference signal modulation sequence to each backscatter end based on identification information of at least one backscatter end;
- and
- sending, by the network-side device, a first modulation matrix and/or a second modulation matrix to the at least one backscatter end, wherein
- the second reference signal modulation sequence is any one of a plurality of row vectors comprised in the first modulation matrix, and the second reference signal modulation sequence is an orthogonal sequence determined based on binary phase shift keying (BPSK) modulation information;
- and
- the third reference signal modulation sequence is any one of a plurality of row vectors comprised in the second modulation matrix, and the third reference signal modulation sequence is determined based on the second reference signal modulation sequence.
Dependencies are inferred from the claim text.