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RAR time window configuration and detection method and device, terminal, base station and storage medium

A detection method and time window technology, applied in the field of communications, can solve the problems of inaccuracy, random access response time window time length configuration, poor compatibility, etc., and achieve the effects of simple configuration, good compatibility, and high accuracy

Inactive Publication Date: 2019-04-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] A RAR time window configuration and detection method, device, terminal, base station, and storage medium provided by the embodiments of the present invention mainly solve the technical problem that the time length of the random access response time window is defined by an absolute time value , the compatibility is not good, and it may lead to the inaccurate configuration of the random access response time window length

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  • RAR time window configuration and detection method and device, terminal, base station and storage medium
  • RAR time window configuration and detection method and device, terminal, base station and storage medium
  • RAR time window configuration and detection method and device, terminal, base station and storage medium

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Embodiment 1

[0048]At present, the definition of the time length of the random access response time window is defined in the form of an absolute time value. For example, in the LTE (Long Term Evolution, long-term evolution) system, the subcarrier spacing frequency used is 15KHz, so in In the LTE system, the time length of the random access response time window is defined at the level of 1 ms. When the subcarrier spacing frequency used in other communication systems changes, the time length of the random access response time window is defined at the level of 1 ms. May not be suitable. For example, in a 5G communication system, the subcarrier spacing (SCS) frequency can be set to a maximum of 240KHz, and the corresponding symbol time of a symbol is about 4.46us. At this time, the time granularity of the random access response time window is defined at the 1ms level. Obviously not detailed enough, resulting in inaccurate configuration of the length of the random access response time window. ...

Embodiment 2

[0095] The embodiment of the present invention exemplifies a manner of configuring the duration of the random access response time window in units of the duration of the control resource set. However, it should be understood that, in the present invention, besides the above configuration manners, other manners may also be used to configure the duration of the random access response time window. In this embodiment, the configuration of the time length of the random access response time window in units of symbols is described as an example.

[0096] Symbol, Symbol, is a modulated symbol, representing 1 to N bits, which can be mapped to 1 RE (ResourceElement, resource element or resource example) for transmission; it can be considered that a symbol is 1 OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbol, which is 1 subcarrier in frequency. Different communication systems use different s...

example 1

[0098] Example 1: look-up table method

[0099] Taking the maximum subcarrier spacing frequency of 5G communication system as 240KHz as an example, assuming that the maximum length of the random access response time window is set to 10ms, the value range of the random access response time window is 1 to 2240 symbols . 2240 is the total number of symbols with 240KHz subcarrier spacing of 10ms. If the method of linear bit mapping is adopted, at least 12 bits are required to represent all possible time lengths, which is very inefficient. Combined with the analysis of actual use, it can be known that not all durations need to be characterized. Therefore, in this example, some typical time values ​​can be screened for representation by setting a table. These time values ​​can be the most frequently used, or When using the time with the greatest possibility or satisfying other factors, the purpose of reducing the number of required information bits can also be facilitated to impro...

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Abstract

The embodiment of the invention provides an RAR time window configuration and detection method and device, a terminal, a base station and a storage medium. The method comprises the steps: configuringa random access response time window as the duration of M control resource sets during the configuration of the random access response time window; detecting the random access response corresponding to the random access preamble message in the configured random access response time window after the terminal sends a random access preamble message containing a preamble sequence to the base station in the random access process. Due to the fact that the random access response time window is configured into M control resource sets, the terminal only needs to detect the number of the corresponding control resource sets. In the embodiment of the invention, the random access response time window is not defined by an absolute time value, but is defined by the number of the control resource sets, sothat the random access response time window is suitable for various communication systems and has good compatibility. Moreover, the time length configuration precision is not influenced by differentsubcarrier frequencies adopted by different systems, the accuracy is high, the configuration is simpler, and the operation is easier.

Description

technical field [0001] The present invention relates to the communication field, in particular to a RAR (Random Access Response, Random Access Response) time window configuration and detection method, device, terminal, base station and storage medium. Background technique [0002] With the development of wireless communication technology and the increasing communication needs of users, in order to meet higher, faster and newer communication needs, the fifth generation mobile communication (5th Generation, referred to as 5G) technology has become the trend of future network development. . 5G communication systems are considered to be implemented in higher and wider frequency bands (eg above 3GHz) in order to achieve higher data rates. The characteristic of high-frequency communication is that it has relatively serious path loss and penetration loss, and its propagation in space is closely related to the atmosphere. Due to the extremely short wavelength of high-frequency sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/08H04W74/08
CPCH04W24/08H04W74/08H04W74/0833
Inventor 张峻峰帕特里克.斯威德曼郝鹏
Owner ZTE CORP