DATA SENDING AND RECEIVING METHOD, ANDA DATA SENDING AND RECEIVING DEVICE

• US 20180351681A1
• Filed: 05/13/2016
• Published: 12/06/2018
• Est. Priority Date: 05/14/2015
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: MA, Ruifeng, LIU, Liu, MU, Qin, JIANG, Huiling
• Granted Patent: US 10,594,429 B2
• Time in Patent Office: Days
• CPC Class Codes: H04J 13/0003 Code application, i.e. aspects relating to how codes are applied to form multiplexed channels
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 27/34 Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Provided are a data transmitting method, a data receiving method, a data transmitting device and a data receiving device. The data transmitting method comprises: modulating data in a first modulation manner to generate a first symbol stream; decomposing the first symbol stream into a pre-determined number of second symbol streams, each of which is modulated in a modulation manner with a modulation order lower than a modulation order of the first modulation manner; processing the pre-determined number of second symbol streams to generate a code-division-multiplexed data stream; and processing the code-division-multiplexed data stream to send the processed data stream. With the methods and the devices, reliability for data transmission can be improved.

Claims

1. A data transmitting method, comprising:

modulating data in a first modulation manner to generate a first symbol stream;

decomposing the first symbol stream into a pre-determined number of second symbol streams, each of which is modulated in a modulation manner with a modulation order lower than that of the first modulation manner;

processing the pre-determined number of second symbol streams to generate a code-division-multiplexed data stream; and

processing the code-division-multiplexed data stream to send the processed data stream.

2. The method of claim 1, wherein the processing the pre-determined number of second symbol streams to generate a code-division-multiplexed data stream comprises:

performing code division multiplexing on the pre-determined number of second symbol streams to generate the code-division-multiplexed data stream.

3. The method of claim 1, wherein the processing the pre-determined number of second symbol streams to generate a code-division-multiplexed data stream comprises:

repeating the pre-determined number of second symbol streams in a pre-determined unit for a pre-determined number of times respectively, to generate a pre-determined number of repeated symbol streams; and

performing code division multiplexing on the pre-determined number of repeated symbol streams to generate the code-division-multiplexed data stream.

4. The method of claim 3, wherein the pre-determined unit is a symbol or a sub-frame.

5. The method of claim 3, further comprising:

receiving, via radio resource control signalling, information indicating the pre-determined number of times.

6. The method of claim 1, further comprising:

receiving, via a downlink control channel, information indicating that the code division multiplexing is to be performed, and receiving, via radio resource control signalling, information indicating the pre-determined number.

7. A data receiving method, comprising:

receiving data and processing the received data to obtain a code-division-multiplexed data stream;

processing the code-division-multiplexed data stream to generate a pre-determined number of first symbol streams;

combining the pre-determined number of first symbol streams into a second symbol stream, wherein the second symbol stream is modulated in a modulation manner with a modulation order higher than that of each of the first symbol streams; and

demodulating the second symbol stream to generate a demodulated data stream.

8. The method of claim 7, wherein the processing the code-division-multiplexed data stream to generate a pre-determined number of first symbol streams comprises:

de-multiplexing the code-division-multiplexed data stream to generate a pre-determined number of de-multiplexed data streams, as the pre-determined number of first symbol streams.

9. The receiving method of claim 7, wherein the processing the code-division-multiplexed data stream to generate a pre-determined number of first symbol streams comprises:

de-multiplexing the code-division-multiplexed data stream to generate a pre-determined number of de-multiplexed data streams; and

extracting, from the pre-determined number of de-multiplexed data streams, symbol streams which have been repeated as a pre-determined unit for a pre-determined number of times respectively, as the pre-determined number of first symbol streams.

10. The method of claim 9, wherein the pre-determined unit is a symbol or a sub-frame.

11. The method of claim 9, further comprising:

receiving, via radio resource control signalling, information indicating the pre-determined number of times.

12. The method of claim 7, further comprising:

receiving, via a physical downlink control channel, information indicating that the code division multiplexing has been performed, and receiving, via radio resource control signalling, information indicating the pre-determined number.

13. A data transmitting device, comprising:

a modulation apparatus configured to modulate data in a first modulation manner to generate a first symbol stream;

a decomposing apparatus configured to decompose the first symbol stream into a pre-determined number of second symbol streams, each of which is modulated in a modulation manner with a modulation order lower than that of the first modulation manner;

a processing apparatus configured to process the pre-determined number of second symbol streams to generate a code-division-multiplexed data stream; and

a communication apparatus configured to process the code-division-multiplexed data stream to send the processed data stream.

14. The transmitting device of claim 13, wherein the processing apparatus is configured to perform code division multiplexing on the pre-determined number of second symbol streams to generate the code-division-multiplexed data stream.

15. The transmitting device of claim 13, wherein the processing apparatus is configured to repeat the pre-determined number of second symbol streams in a pre-determined unit for a pre-determined number of times respectively, to generate a pre-determined number of repeated symbol streams, and perform code division multiplexing on the pre-determined number of repeated symbol streams to generate the code-division-multiplexed data stream.

16. The transmitting device of claim 15, wherein the pre-determined unit is a symbol or a sub-frame.

17. The transmitting device of claim 15, wherein the communication apparatus is further configured to receive, via radio resource control signalling, information indicating the pre-determined number of times.

18. The transmitting device of claim 13, wherein the communication apparatus is further configured to receive, via a downlink control channel, information indicating that code division multiplexing is to be performed, and receive, via radio resource control signalling, information indicating the pre-determined number.

19-24. -24. (canceled)