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Information sending method and device

A technology of information sending and waiting to be sent, which is applied in the field of communication, and can solve problems such as the inability to use it directly, the reduction of available resources for sending valid data, and the increase of reference signal overhead, so as to achieve the effect of improving available resources

Active Publication Date: 2017-10-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the reduction of the TTI length, many problems will arise. For example, when the TTI length is reduced to 1 to 7 symbols, the existing PUCCH and PUSCH transmission structures cannot be used directly; the shortening of the TTI time domain will affect the transmission information. The demodulation performance; the reduction of the number of symbols in TTI will lead to excessive reference symbol RS overhead and reduce the available resources for effective data transmission.
[0005] In the related art, as the number of TTI symbols decreases, the overhead of the reference signal increases, which in turn leads to a decrease in the available resources for sending effective data on the physical uplink channel, and no effective solution has been proposed

Method used

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  • Information sending method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] The main idea of ​​the preferred embodiment 1 of the present invention is: there are sequences corresponding to N predefined reference signals, wherein the sequences corresponding to the N predefined reference signals have the same non-zero values ​​at predetermined positions Value, N is a positive integer greater than or equal to 2; according to the information (equivalent to the information to be sent on the physical uplink channel of the above-mentioned embodiment) or a part of the information, determine the sequence corresponding to the reference signal to be sent; correspond to the determined reference signal The sequence and the above information are mapped to time-frequency resources, and the reference signal and the above information are sent on the frequency resources.

[0068]Further, the sequence corresponding to the reference signal has a constant-amplitude property in the frequency domain, or has a constant-amplitude property in the time domain, or has a con...

specific Embodiment 1

[0069] Specific embodiment 1: Assuming that the sequence corresponding to the reference signal is generated in the time domain, set sequence 1 and sequence 2 and the sequence after the Fourier transform (Discrete Fourier Transform, DFT for short) of sequence 1 and sequence 2 as shown in Table 1 below :

[0070] Table 1

[0071] n

[0072] It can be seen from the above Table 1 that the Fourier-transformed sequences of sequence s1 and sequence s2 are the same at the first and seventh positions (corresponding to n=0 and n=6 respectively), that is, no matter Whether the sending end sends the sequence s1 or the sequence s2, the sequence received by the receiving end is the same at the first and seventh positions in the frequency domain. Using the above characteristics, the receiving end can perform channel estimation at the two positions , and then use the channel estimates obtained at these two positions to perform interpolation to obtain the frequency domain estimation ...

specific Embodiment 2

[0073] Assuming that the sequence corresponding to the reference signal is generated in the frequency domain, set sequence 1 and sequence 2 as shown in Table 2 respectively:

[0074] Table 2

[0075] n

s1

s2

0

0.7071-0.7071i

0.7071-0.7071i

1

0.7071+0.7071i

-0.7071-0.7071i

2

-0.7071+0.7071i

-0.7071+0.7071i

3

-0.7071-0.7071i

0.7071+0.7071i

4

-0.7071+0.7071i

-0.7071+0.7071i

5

-0.7071+0.7071i

0.7071-0.7071i

6

0.7071+0.7071i

0.7071+0.7071i

7

0.7071+0.7071i

-0.7071-0.7071i

8

-0.7071+0.7071i

-0.7071+0.7071i

9

0.7071+0.7071i

-0.7071-0.7071i

10

-0.7071-0.7071i

-0.7071-0.7071i

11

-0.7071+0.7071i

0.7071-0.7071i

[0076] It can be seen from the above Table 2 that the sequence s1 and sequence s2 are the same on n=0 / 2 / 4 / 6 / 8 / 10, that is to say, no matter whether the sender sends sequence s1 or sequence s2, The sequences received ...

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Abstract

The invention provides an information sending method and device. The method comprises the steps of determining a sequence corresponding to a to-be-sent reference signal from N predefined sequences according to to-be-sent information on a physical uplink channel, wherein the N predefined sequences have the same nonzero value at predetermined positions, and the N is an integer greater than or equal to 2; and mapping the sequence corresponding to the determined reference signal and the information to time frequency resources and sending the reference signal and the information on the time frequency resources. Through adoption of the technical scheme, the problem that in related technologies, the available resources for sending valid data (interpreted as the to-be-sent information on the physical uplink channel) on the physical uplink channel is reduced due to the fact that the number of TTI (Transmission Time Interval) symbols is reduced and the cost of the reference signal is increased is solved, and the available resources for transmitting the valid data are further improved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to an information sending method and device. Background technique [0002] The rapid development of mobile Internet and Internet of Things has triggered the explosive growth of data traffic and the widespread rise of diversified and differentiated services. The fifth-generation mobile communication technology (5-generation, 5G) is a new generation of mobile communication technology. Compared with the fourth-generation mobile communication technology (4-generation, 4G), it will support higher speed, massive links, ultra-low delay, Higher reliability, 100-fold improvement in energy efficiency, etc. to support new demand changes. Among them, ultra-low latency, as a key indicator of 5G technology, directly affects the development of latency-limited services such as Internet of Vehicles, industrial automation, remote control, and smart grid. Currently, a series of standard research o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12H04W72/54
CPCH04W72/0453H04W72/1221H04W72/1268H04W72/535H04W72/21H04L27/26H04L27/2602H04L27/262H04L27/2636H04L27/26136H04W72/54
Inventor 梁春丽夏树强韩祥辉张雯
Owner ZTE CORP
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