DATA SENDING METHOD, DATA RECEIVING METHOD, TRANSMIT-END DEVICE, AND RECEIVE-END DEVICE

• US 20190045452A1
• Filed: 09/14/2018
• Published: 02/07/2019
• Est. Priority Date: 03/16/2016
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Yang, Yubo, Luo, Chao, Liu, Zheng, Tie, Xiaolei
• Granted Patent: US 10,536,907 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/06 using space diversity
• CPC Class Codes: H04L 27/26 Systems using multi-frequency codes H04L27/32 takes precedence
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04W 52/10 Open loop power control
• CPC Class Codes: H04W 52/24 using SIR [Signal to Interference Ratio] or other wireless path parameters
• CPC Class Codes: H04W 52/26 using transmission rate or quality of service QoS [Quality of Service]
• CPC Class Codes: H04W 52/262 taking into account adaptive modulation and coding [AMC] scheme AMC per se H04L1/0001
• CPC Class Codes: H04W 52/38 TPC being performed in particular situations
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames

Abstract

Embodiments of this application provide a data sending method, a data receiving method, a transmit-end device, and a receive-end device. The data sending method provided in the embodiments of this application may include: performing scrambling code initialization to generate a scrambling code; scrambling a data block based on the scrambling code; repeatedly sending the scrambled data block; performing scrambling code initialization to generate a new scrambling code when an interval after previous scrambling code initialization of the data block is greater than or equal to a preset scrambling code initialization parameter threshold; scrambling the data block again based on the generated new scrambling code; and repeatedly sending the data block scrambled again. The embodiments of this application can improve efficiency of data transmission between a transmit-end device and a receive-end device.

Claims

1. A data sending method, comprising:

determining a bandwidth parameter based on a subcarrier spacing, wherein the bandwidth parameter is a quantity of subcarriers;

determining transmit power based on the bandwidth parameter; and

sending a data block on the subcarrier by using the transmit power.

2. The method according to claim 1, wherein:

determining a bandwidth parameter based on a subcarrier spacing comprises;

when the subcarrier spacing is a first spacing, determining a ratio of the first spacing to a second spacing as the bandwidth parameter, wherein the second spacing is greater than the first spacing; and

sending a data block on the subcarrier by using the transmit power comprises;

sending the data block on a single subcarrier of subcarriers between which the subcarrier spacing is the first spacing by using the transmit power.

3. The method according to claim 2, wherein the first spacing is 3.75 kHz, and the second spacing is 15 kHz.

4. The method according to claim 1, wherein:

determining a bandwidth parameter based on a subcarrier spacing comprises;

when the subcarrier spacing is a second spacing, determining a quantity of subcarriers between which the subcarrier spacing is the second spacing as the bandwidth parameter; and

sending a data block on the subcarrier by using the transmit power comprises;

sending the data block on at least one of subcarriers between which the subcarrier spacing is the second spacing by using the transmit power.

5. The method according to claim 4, wherein the second spacing is 15 kHz, and the quantity of subcarriers that are spaced by the second spacing is 1, 3, 6 or 12.

6. The method according to claim 1, further comprising:

determining, based on a transmission manner of the transmit-end device, a subcarrier spacing corresponding to the transmit-end device; and

determining the bandwidth parameter based on the subcarrier spacing comprises;

determining by using a preset correspondence of the transmission manner and the bandwidth parameter as described below;

7. A transmit-end device, comprising:

a memory storage comprising instructions;

a processor in communication with the memory storage and configured to;

determine a bandwidth parameter based on a subcarrier spacing, wherein the bandwidth parameter is a quantity of subcarriers, and

determine transmit power based on the bandwidth parameter; and

a transmitter, configured to send a data block on the subcarrier by using the transmit power.

8. The transmit-end device according to claim 7, wherein:

the processor is further configured to;

when the subcarrier spacing is a first spacing, determine a ratio of the first spacing to a second spacing as the bandwidth parameter, wherein the second spacing is greater than the first spacing; and

the transmitter is further configured to send the data block on a single subcarrier of subcarriers between which the subcarrier spacing is the first spacing by using the transmit power.

9. The transmit-end device according to claim 8, wherein the first spacing is 3.75 kHz, and the second spacing is 15 kHz.

10. The transmit-end device according to claim 7, wherein:

the processor is further configured to;

when the subcarrier spacing is a second spacing, determine a quantity of subcarriers between which the subcarrier spacing is the second spacing as the bandwidth parameter; and

the transmitter is further configured to send the data block on at least one of subcarriers between which the subcarrier spacing is the second spacing by using the transmit power.

11. The transmit-end device according to claim 10, wherein the second spacing is 15 kHz, and the quantity of subcarriers that are spaced by the second spacing is 1, 3, 6, or 12.

12. The transmit-end device according to claim 7, wherein:

the processor is configured to;

determine, based on a transmission manner of the transmit-end device, a subcarrier spacing corresponding to the transmit-end device; and

to determine the bandwith parameter based on the subcarrier spacing, the processor is configured to;

use a preset correspondence of a transmission manner and a bandwidth parameter as described below;

13. A non-transitory computer readable storage medium comprising instructions which, when executed by a processor, cause a device to:

determine a bandwidth parameter based on a subcarrier spacing, wherein the bandwidth parameter is a quantity of subcarriers;

determine transmit power based on the bandwidth parameter; and

sending a data block on the subcarrier by using the transmit power.

14. The non-transitory computer readable storage medium according to claim 13, wherein the instructions, when executed by a processor, cause a device to:

determine, based on a transmission manner of the a transmit-end device, a subcarrier spacing corresponding to the transmit-end device; and

determine the bandwidth parameter based on the subcarrier spacing by using a preset correspondence between the transmission manner and the bandwidth parameter as described below;