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Wireless communication method, device and system

A technology of wireless communication and modulation scheme, applied in the field of communication, can solve the problem that signal distortion depends on the channel, etc., to achieve the effect of improving performance

Active Publication Date: 2020-11-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, the distortion of the signal depends on the characteristics of the channel

Method used

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  • Wireless communication method, device and system
  • Wireless communication method, device and system
  • Wireless communication method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] image 3 In step S1 of the wireless communication method, the indication information of uplink data transmission may be carried in a downlink control plane message. The indication information of uplink data transmission may be embodied as one or more information elements (information element, IE) in the downlink control plane message. The IE can be understood as a predefined field in the downlink control plane message, and the possible values ​​and meanings of this field are predetermined by the standard protocol. In addition, besides indicating the modulation scheme for uplink data transmission, the indication information may also be used to indicate other information for uplink data transmission, such as a coding scheme. For example, the indication information includes an index of a modulation and coding scheme (modulation and coding scheme, MCS), and the index jointly indicates a modulation scheme and a coding scheme for uplink data transmission.

[0107] It should...

Embodiment 2

[0117] In this embodiment, the base sequence configuration of the reference signal sequence corresponding to π / 2BPSK includes the length of the Zadoff-Chu sequence and the value of the root. For details, refer to the introduction below. The base sequence configuration of the reference signal sequence corresponding to other modulation schemes can follow the base sequence configuration in the existing LTE system.

[0118] The Zadoff-Chu sequence is a complex-valued mathematical sequence that satisfies the constant amplitude zero autocorrelation (CAZAC) property. Wherein, the amplitudes of the elements in the Zadoff-Chu sequence are the same, which helps to generate a wireless signal with a lower peak-to-average power ratio (PAPR). The correlation function between a Zadoff-Chu sequence and its circularly shifted version is a delta function. The peak position of the delta function depends on the magnitude of the cyclic shift. Multiple orthogonal sequences can be obtained from th...

Embodiment 3

[0153] In this embodiment, the base sequence configuration of the reference signal sequence corresponding to π / 2BPSK includes the value of the phase parameter of the QPSK sequence. The base sequence configuration of the reference signal sequence corresponding to other modulation schemes may follow the base sequence configuration in the existing LTE system, and reference may be made to the introduction in Embodiment 1.

[0154] In this embodiment, the reference signal sequence is generated based on the QPSK sequence, and the element values ​​of the QPSK sequence conform to the following equation:

[0155]

[0156] Wherein, X(n) is the nth element of the QPSK sequence, and the value of n is equal to the length of the reference signal sequence. j is the imaginary unit, is the phase parameter of the QPSK sequence. As an implementation manner, when the length of the reference signal sequence generated based on the QPSK sequence is 6, The value of is in accordance with the f...

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Abstract

The application discloses a wireless communication method, device and system. Wherein, the wireless communication method includes: the terminal receives indication information of uplink data transmission from the base station, the indication information is used to indicate the modulation scheme of the uplink data transmission; the terminal determines the reference signal corresponding to the modulation scheme of the uplink data transmission base sequence configuration of the sequence, and generate a demodulation reference signal according to the determined base sequence configuration of the reference signal sequence; wherein, the modulation scheme of the uplink data transmission is one of the multiple modulation schemes supported by the terminal, The multiple modulation schemes include at least π / 2 binary phase shift keying BPSK, and the base sequence configuration of the reference signal sequence corresponding to the π / 2BPSK is different from the reference signal sequences corresponding to other modulation schemes in the multiple modulation schemes. Base sequence configuration for signal sequences.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a wireless communication method, device and system. Background technique [0002] The communication system can be divided into three parts: sending equipment, channel and receiving equipment. Wherein, a channel refers to a transmission channel of a signal, and may be understood as a transmission medium of a signal. According to different transmission media, communication systems can be divided into wired communication systems and wireless communication systems. Due to the non-ideal characteristics of the transmission medium, especially for wireless communication systems, the transmission of signals will always be distorted. In other words, the signal received by the receiving device is not exactly the same as the signal originally sent by the sending device. The difference between the two is the distortion of the signal. Also, the distortion of the signal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J13/00H04J13/14H04L1/00H04W72/12
CPCH04J13/0062H04J13/14H04L1/0003H04L1/0027H04W72/1268H04L1/00H04L5/0051H04L1/0023H04L27/0008H04L27/233
Inventor 丁梦颖胡远洲董朋朋王宗杰
Owner HUAWEI TECH CO LTD