Multi-slot pucch frequency hopping method and frequency hopping selection device

A selection device and multi-slot technology, applied in the field of communication, can solve problems affecting PUCCH receiving performance and achieve the effects of maximizing diversity gain, reducing frequency hopping, and reducing complexity

Active Publication Date: 2021-06-04
BEIJING YUNZHIRUANTONG INFO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the channel has severe delay spread, frequency selective fading will affect the receiving performance of PUCCH. The most direct solution is to adopt a frequency hopping mechanism similar to LTE, but the current research on cross-slot frequency hopping is relatively limited. Therefore, it is urgent to invent a frequency hopping method and a frequency hopping selection device for multi-slot PUCCH

Method used

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  • Multi-slot pucch frequency hopping method and frequency hopping selection device
  • Multi-slot pucch frequency hopping method and frequency hopping selection device
  • Multi-slot pucch frequency hopping method and frequency hopping selection device

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Embodiment 1

[0102] Image 6 Shown is a schematic diagram of a frame structure ratio provided by the embodiment of the present invention, please refer to Image 6 , the system subcarrier interval is 60KHz, 1ms subframe contains 4 time slots, and a time slot contains 14 symbols, the uplink adopts a self-contained structure of 2:2:10, the frame structure is as follows Image 6 shown. In order to achieve the same coverage capability as LTE, the uplink PUCCH needs to occupy 6 time slots. Furthermore, the channel estimation is performed based on the user's uplink pilot, and the time-domain channel estimation result is obtained, and the maximum channel delay is compared with the set threshold. In this example, the channel delay is greater than the set threshold, so the frequency hopping transmission of the PUCCH needs to be considered. According to the preset threshold, the subcarrier spacing has reached the first threshold at this time, so frequency hopping within the time slot is considered...

Embodiment 2

[0104] The subcarrier spacing of the system is 60KHz, and a 1ms subframe contains 4 time slots, and a time slot contains 14 symbols. The uplink adopts a self-contained structure of 2:2:10. The frame structure is as follows: Image 6 shown. In order to achieve the same coverage capability as LTE, the uplink PUCCH needs to occupy 6 time slots. Furthermore, the channel estimation is performed based on the user's uplink pilot, and the time-domain channel estimation result is obtained, and the maximum channel delay is compared with the set threshold. In this example, the channel delay is greater than the set threshold, so frequency hopping transmission of the PUCCH needs to be considered. According to the preset threshold, the subcarrier spacing reaches the first threshold at this time, but according to the formula The calculated time-domain channel relative change value w2 , that is, the channel changes slowly in time, so frequency hopping between time slots is considered, and ...

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Abstract

The invention discloses a multi-slot PUCCH frequency hopping method and a frequency hopping selection device, and relates to the field of communication technology. The method includes: a base station acquires a channel time delay according to channel state information, and compares the channel time delay with a preset time delay; Delay greater than the preset delay: when the subcarrier spacing is less than the preset first threshold, the channel relative change value is greater than the first preset change value, and PUCCH is used without frequency hopping; when the subcarrier spacing is greater than the preset first threshold, the channel relative change If the value is greater than the second preset change value and less than the first preset change value, use PUCCH intra-slot frequency hopping; when the subcarrier spacing is greater than the preset second threshold, and the channel relative change value is less than the second preset change value, use PUCCH Frequency hopping between time slots; if the delay is less than or equal to the preset delay, frequency hopping is not used for the channel; the base station sends the frequency hopping method to the terminal through control information, the terminal analyzes the control information, and sends frequency hopping according to the instructions of the base station. Thereby maximizing the diversity gain.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a multi-slot PUCCH frequency hopping method and a frequency hopping selection device. Background technique [0002] In the existing technology, compared with LTE, the 5G new air interface needs to meet the needs of different scenarios, so it supports more types of parameter sets and frame structures. For example, the subcarrier spacing supports 15*2nKHz, and the channel supports flexible and variable configuration. Support for self-contained slot structures and more. Among them, for the uplink control channel PUCCH, in order to adapt to different air interfaces and time slot structures, two types of short-PUCCH and long-PUCCH are designed in the standard, corresponding to different numbers of uplink symbols in each time slot. However, when the slot length is small, the PUCCH of a single slot cannot meet the requirement of the new air interface for cell coverage, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/713
CPCH04B1/713
Inventor 周露任剑杨征帆
Owner BEIJING YUNZHIRUANTONG INFO TECH CO LTD
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