Information transmission method and device

A technology for transmitting information and transmitting units, which is applied in the field of transmitting information

Active Publication Date: 2017-03-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a method and device for transmitting information, which can make full use of the frequency domain diversity gain of PUCCH to carry transmission information and make full use of the reference symbol RS for concealment when the length of the TTI time domain is shortened. transfer information in an efficient manner to increase the available resources for the transfer of valid data

Method used

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  • Information transmission method and device
  • Information transmission method and device

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Experimental program
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Embodiment 1

[0153] image 3 The ACK / NACK transmission structure under the conventional cyclic prefix (Cyclic Prefix, CP) of the existing TTI=1ms PUCCH format Format 1 / 1a / 1b is given in . In the existing PUCCH structure, one subframe is occupied in the time domain, one physical resource block (Physical Resource Block, PRB) is occupied in the frequency domain, and frequency hopping is used between time slots. Different cells use group frequency hopping to select different base sequences based on QPSK, and the period of group frequency hopping is a time slot. In the figure, different symbols in the same time slot use the time domain randomization method to obtain different cyclic shift sequences of the same base sequence. In addition, the existing structure adopts the method of time-domain spread spectrum to increase the number of multiplexing users. However, when the short TTI technology is used to reduce the delay, the number of TTI symbols is only 1 to 7 single-carrier frequency-divisio...

Embodiment 2

[0163] Figure 5 A schematic diagram of sending a K bit ACK / NACK message fed back by the PUCCH with a TTI of 7 symbols is given in . Figure 5 , a total of N UEs send uplink ACK / NACK messages, and each UE feeds back K-bit ACK / NACK, using a K-1 ,a K-2 ,...,a 1 ,a 0 express. The base sequence adopts a QPSK machine-selected sequence with a length of 24, and assigns M=2 to each SC-FDMA symbol for each user K-1 different cyclic shifts, using Indicates that s represents the symbol index, and its value ranges from an integer within 0 to 7. The PUCCH frequency domain occupies 4 PRBs, and the ACK / NACK information on each symbol is mapped to the comb subcarrier in the frequency domain. The frequency domain offset of the comb subcarrier is offset, which is calculated by the following formula:

[0164]

[0165] in, means a K-1 of non. Further, define a K-2 ,...,a 1 ,a 0 The decimal number corresponding to the composed binary sequence is i. At the sth symbol position, th...

Embodiment 3

[0172] Figure 6 A schematic diagram of sending a K bitACK / NACK message fed back by the PUCCH with a TTI occupying 2 symbol lengths is given in . Figure 6 , a total of N UEs send uplink ACK / NACK messages, and each UE feeds back K-bit ACK / NACK, using a K-1 ,a K-2 ,...,a 1 ,a 0 express. The base sequence takes the length N ZC Cyclic extension of the ZC sequence of =36, assigning M=2 to each user K-1 different cyclic shifts, using Represents, where s represents the symbol index, which takes a value of 0 or 1. The ACK / NACK information of each user is mapped to different frequency domain positions of two SC-FDMA symbols, and the frequency domain indexes are n respectively r,s , that is, there is frequency hopping between symbols, and each frequency hopping position occupies 6 PRBs. Each symbol is mapped to a comb structure, and the frequency domain offset of the comb subcarrier is offset. When s=0, offset=a K-1 ; when s=1,

[0173] Further, define a K-2 ,...,a 1 ,...

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Abstract

The invention discloses an information transmission method and device. The method comprises the following steps: to begin, determining a predefined pattern for carrying information, wherein the predefined pattern comprises a predefined sequence, or a predefined reference symbol RS time-frequency structure; and then, transmitting the predefined pattern carried with the information in a preset time-frequency domain resource.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a method and device for transmitting information. 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 (5G) is a new generation of mobile communication technology. Compared with the fourth-generation mobile communication technology (4G), it will support higher speed, huge number of links, ultra-low delay, higher reliability, and hundreds of times Improve 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 on 5G l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L5/0005H04L5/0064H04L27/26136H04L27/2613H04L5/00H04L5/0048H04L5/0055H04W72/21H04B1/7143H04J13/0062H04L27/2082H04L27/2607
Inventor 韩祥辉夏树强戴博张雯石靖戴谦苟伟
Owner ZTE CORP
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