IP Library › Granted Patent US 11,108,608

Granted Patent B2

US 11,108,608 · App. 16/922,692 · Granted Aug 31, 2021

Information transmission method and apparatus

Inventors: Xi Zhang (Chengdu, CN); Minghui Xu (Chengdu, CN); Lei Chen (Shenzhen, CN)

Assignee: Huawei Technologies Co., Ltd.

H04L27/2627 H04L5/0007 H04L5/0048 H04L27/20 H04L27/2614

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Quick Facts

Patent No.: US 11,108,608
App. No.: 16/922,692
Granted: Aug 31, 2021
Kind: B2

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Abstract

An information transmission method related to the field of communications technologies includes: generating an orthogonal frequency division multiplexing (OFDM) symbol, where the OFDM symbol includes a pi/2-BPSK modulated data signal and a pi/2-binary phase shift keying (BPSK) modulated phase tracking reference signal (PTRS); and sending the OFDM symbol. This method may be applied to an uplink single carrier transmission scenario or a downlink single carrier transmission scenario.

Claims (58)

1. A communication method, comprising:

generating, by a transmit end device, a sequence;

mapping, by the transmit end device, the sequence to an orthogonal frequency division multiplexing (OFDM) symbol, wherein the sequence comprises a pi/2-binary phase shift keying (BPSK) modulated data signal and a pi/2-BPSK modulated phase tracking reference signal (PTRS); and

sending, by the transmit end device, the OFDM symbol to a receive end device;

wherein the pi/2-BPSK modulated PTRS comprises one or more PTRS blocks, and each PTRS block comprises one or more consecutive pi/2-BPSK modulated symbols; and

wherein a respective phase shift amount of a respective pi/2-BPSK modulated symbol in the pi/2-BPSK modulated PTRS is related to a location of the respective pi/2-BPSK modulated symbol in the sequence.

2. The method according to claim 1 , wherein the method further comprises:

phase-shifting a BPSK modulated PTRS to obtain the pi/2-BPSK modulated PTRS.

3. The method according to claim 1 , wherein the one or more consecutive pi/2-BPSK modulated symbols in each PTRS block are obtained by phase-shifting one or more BPSK modulated symbols according to a pi/2 progressive increase rule after a pi modulo operation.

4. The method according to claim 3 , wherein phase-shifting the one or more BPSK modulated symbols according to the pi/2 progressive increase rule after the pi modulo operation further comprises:

phase-shifting the one or more BPSK modulated symbols based on an arrangement order of the one or more BPSK modulated symbols according to the pi/2 progressive increase rule after the pi modulo operation.

5. The method according to claim 1 , wherein the pi/2-BPSK modulated data signal comprises one or more data parts, and each data part comprises one or more consecutive pi/2-BPSK modulated symbols; and

wherein the respective phase shift amount of a respective pi/2-BPSK modulated symbol in the pi/2-BPSK modulated PTRS is π/2*mod (k, 4), wherein a quantity of pi/2-BPSK modulated symbols in each PTRS block and a quantity of pi/2-BPSK modulated symbols in each data part are integer multiples of 4, and k is an integer.

6. The method according to claim 1 , wherein the pi/2-BPSK modulated data signal comprises one or more data parts, and each data part comprises one or more consecutive pi/2-BPSK modulated symbols; and

wherein the respective phase shift amount of a respective pi/2-BPSK modulated symbol in the pi/2-BPSK modulated PTRS is π/2*mod (k, 2), wherein a quantity of pi/2-BPSK modulated symbols in each PTRS block and a quantity of pi/2-BPSK modulated symbols in each data part are integer multiples of 2, and k is an integer.

7. The method according to claim 1 , wherein the OFDM symbol is a discrete Fourier transform-spread-OFDM (DFT-s-OFDM) symbol.

8. A communication apparatus, comprising:

one or more non-transitory memories configured to store instructions; and

one or more processors coupled to the one or more non-transitory memories, wherein the one or more processors are configured to execute the instructions to facilitate:

generating a sequence;

mapping the sequence to an orthogonal frequency division multiplexing (OFDM) symbol, wherein the sequence comprises a pi/2-binary phase shift keying (BPSK) modulated data signal and a pi/2-BPSK modulated phase tracking reference signal (PTRS); and

sending the OFDM symbol to another communication apparatus;

wherein the pi/2-BPSK modulated PTRS comprises one or more PTRS blocks, and each PTRS block comprises one or more consecutive pi/2-BPSK modulated symbols; and

9. The apparatus according to claim 8 , wherein the one or more processors are further configured to execute the instructions to facilitate:

phase-shifting a BPSK modulated PTRS to obtain the pi/2-BPSK modulated PTRS.

10. The apparatus according to claim 8 , wherein the one or more processors are further configured to execute the instructions to facilitate:

phase-shifting one or more BPSK modulated symbols according to a pi/2 progressive increase rule after a pi modulo operation to obtain the one or more consecutive pi/2-BPSK modulated symbols in each PTRS block.

11. The apparatus according to claim 10 , wherein phase-shifting the one or more BPSK modulated symbols according to the pi/2 progressive increase rule after the pi modulo operation further comprises:

12. The apparatus according to claim 8 , wherein the pi/2-BPSK modulated data signal comprises one or more data parts, and each data part comprises one or more consecutive pi/2-BPSK modulated symbols; and

13. The apparatus according to claim 8 , wherein the pi/2-BPSK modulated data signal comprises one or more data parts, and each data part comprises one or more consecutive pi/2-BPSK modulated symbols;

14. A communication method, comprising:

receiving, by a receive end device, an orthogonal frequency division multiplexing (OFDM) signal; and

obtaining, by the receive end device, a sequence from the OFDM signal, wherein the sequence comprises a pi/2-binary phase shift keying (BPSK) modulated data signal and a pi/2-BPSK modulated phase tracking reference signal (PTRS);

wherein the pi/2-BPSK modulated PTRS comprises one or more PTRS blocks, and each PTRS block comprises one or more consecutive pi/2-BPSK modulated symbols; and

15. The method according to claim 14 , wherein the one or more consecutive pi/2-BPSK modulated symbols in each PTRS block are phase-shifted according to a pi/2 progressive increase rule after a pi modulo operation.

16. The method according to claim 14 , wherein the one or more consecutive pi/2-BPSK modulated symbols in each PTRS block are phase-shifted based on an arrangement order of the one or more consecutive pi/2-BPSK modulated symbols and according to a pi/2 progressive increase rule after a pi modulo operation.

17. The method according to claim 14 , wherein the pi/2-BPSK modulated data signal comprises one or more data parts, and each data part comprises one or more consecutive pi/2-BPSK modulated symbols; and

18. The method according to claim 14 , wherein the pi/2-BPSK modulated data signal comprises one or more data parts, and each data part comprises one or more consecutive pi/2-BPSK modulated symbols; and

19. A communication apparatus, comprising:

one or more non-transitory memories configured to store instructions; and

one or more processors coupled to the one or more non-transitory memories, wherein the one or more processors are configured to execute the instructions to facilitate:

receiving an orthogonal frequency division multiplexing (OFDM) signal; and

obtaining a sequence from the OFDM signal, wherein the sequence comprises a pi/2-binary phase shift keying (BPSK) modulated data signal and a pi/2-BPSK modulated phase tracking reference signal (PTRS);

wherein the pi/2-BPSK modulated PTRS comprises one or more PTRS blocks, and each PTRS block comprises one or more consecutive pi/2-BPSK modulated symbols; and

20. The apparatus according to claim 19 , wherein the one or more consecutive pi/2-BPSK modulated symbols in each PTRS block are phase-shifted according to a pi/2 progressive increase rule after a pi modulo operation.

21. The apparatus according to claim 19 , wherein the one or more consecutive pi/2-BPSK modulated symbols in each PTRS block are phase-shifted based on an arrangement order of the one or more consecutive pi/2-BPSK modulated symbols and according to a pi/2 progressive increase rule after a pi modulo operation.

22. The apparatus according to claim 19 , wherein the pi/2-BPSK modulated data signal comprises one or more data parts, and each data part comprises one or more consecutive pi/2-BPSK modulated symbols; and

23. The apparatus according to claim 19 , wherein the pi/2-BPSK modulated data signal comprises one or more data parts, and each data part comprises one or more consecutive pi/2-BPSK modulated symbols; and

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 7, 2020

From: ZHANG, XI; XU, MINGHUI; CHEN, LEI

To: HUAWEI TECHNOLOGIES CO., LTD.

Reel/Frame 053141/0691 →

Priority Claims (2)

CN 201710444084.1 · Jun 13, 2017 · national

CN 201710920235.6 · Sep 30, 2017 · national

Continuity (3)

Continuation 16518574 · Jul 22, 2019

Continuation PCTCN2018090913 · Jun 12, 2018

Related Publication 20200336354A1 · Oct 22, 2020

Cited By (1)

US 12,348,349