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Wireless signal transmission method and device

A wireless signal and transmission method technology, applied in the field of communication, can solve problems such as uplink and downlink interference, symbol misalignment, etc.

Active Publication Date: 2021-06-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Embodiments of the present invention provide a wireless signal transmission method and device, to at least solve the problem that symbols are easily misaligned when there are different subcarrier spacing parameters in the related art, which in turn will lead to the problem of uplink and downlink interference

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  • Wireless signal transmission method and device
  • Wireless signal transmission method and device

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Embodiment 1

[0078] The symbol is a Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM for short) symbol, and there are multiple sets of parameters describing CP-OFDM, and valid symbols in the same set of parameters (that is, carrying valid data (excluding The OFDM symbol part of the CP), also known as the payload) is equal in length, and the prefix CP in the same set of parameters has two possible lengths, which are respectively defined as long CP and short CP, wherein the length of the long CP is greater than the length of the short CP; The effective symbol length between the sets of parameters and the prefix CP are not equal. If the scaling principle is satisfied and the scaling factor Scale factor=m, then the effective symbol length and the long and short CP length (a set of parameters) under the scaled subcarrier spacing fs are the basis (another set of parameters) 1 / m at subcarrier spacing f0. Among them, m can be a positive integer greater than or equal to 1, and can ...

Embodiment 2

[0085] The foregoing embodiments focus on alignment for the purpose of solving mutual interference between uplink and downlink, and the solution also considers alignment of concatenated blocks composed of multiple symbols in the same transmission direction. The following embodiment considers the problem mainly from the perspective of multi-symbol function normalization.

[0086] The symbols are still CP-OFDM symbols. There are multiple sets of parameters describing CP-OFDM. The effective symbols (excluding CP) in the same set of parameters are of equal length. The prefix CP in the same set of parameters has two possible lengths, which are defined separately It is a long CP and a short CP, wherein, the length of the long CP is greater than the length of the short CP; the effective symbol length between multiple sets of parameters, the prefix CP is not equal, if the scaling principle is met, and the scaling factor (Scale factor) = m, then scaling The effective symbol length and ...

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Abstract

The present invention provides a wireless signal transmission method and device. The method includes: in the case of multiple sets of wireless signals with different configurations, concatenating consecutive symbols in each set of wireless signals into symbol concatenated blocks, wherein, in In the case where the effective symbol length between any two sets of wireless signals in the multiple sets of wireless signals with different configurations satisfies the proportional relationship of n:m, in the symbol concatenation block of the two sets of wireless signals within the same time length The number of symbols satisfies the proportional relationship of m:n, and n and m are positive integers; the symbol concatenated blocks are transmitted in a predetermined order. The present invention solves the problem that symbols are easily misaligned when there are different subcarrier spacing parameters in the related art, thereby causing uplink and downlink interference, avoids uplink and downlink interference, and improves system robustness and stability.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a wireless signal transmission method and device. Background technique [0002] The new generation of mobile communication system (new radio, NR for short) needs to support enhanced mobile broadband (eMBB for short), ultra-reliable and low-latency communications (Ultra-Reliable and Low-Latency Communications, URLLC for short), and massive machine Type communication (massive machine typecommunication, referred to as mMTC) business, and system networking will be carried out on a higher carrier frequency lower than 6GHz or higher than 6GHz. At present, the frequency band widely recognized by the industry and recognized by international organizations is mainly 3GHz ~6GHz, 6GHz~100GHz, this frequency band basically belongs to the centimeter wave band and the millimeter wave band. Studies have shown that the frequency is between 6G and 100GHz, especially at higher frequencies, the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2678H04L27/2691H04L27/2602H04L27/26025H04L1/0023H04W72/044H04L27/2605
Inventor 郝鹏张峻峰毕峰鲁照华胡留军王欣晖柏钢
Owner ZTE CORP
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