Random access signal transmission method based on single carrier transmission and reception system

A random access signal and random access technology, applied in the transmitter/receiver shaping network, baseband system components, signal channels, etc., can solve the problem of frequent synchronization and asynchronous conversion between the terminal and the base station, Achieve the effect of reducing the message detection rate and ensuring the access probability

Inactive Publication Date: 2006-12-13
ZTE CORP
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Problems solved by technology

[0006] Since the terminal business of the future mobile communication system is an IP-oriented optimization principle, the synchronous and asynchronous conversions between the terminal and the base station are relatively frequent

Method used

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  • Random access signal transmission method based on single carrier transmission and reception system
  • Random access signal transmission method based on single carrier transmission and reception system
  • Random access signal transmission method based on single carrier transmission and reception system

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Embodiment Construction

[0044] The single-carrier transmission and reception system is a promising communication system to achieve high spectral efficiency, high peak rate, and low peak-to-average ratio at higher bandwidths. The random access structure and process based on single carrier should flexibly adjust the access preamble of its uplink random access signal and the method of uplink random access signaling to adapt to different working conditions and channel quality.

[0045] Such as figure 1 , 2 , 3, the access preamble of the uplink random access signal is used to provide the receiving end device (base station) for timing synchronization measurement or frequency deviation measurement, so that the transmission time and frequency deviation of subsequent uplink signals can be adjusted, To achieve a good uplink synchronization effect, if the access preamble carries a signature, it can indicate the ID of the access user or the group it belongs to; it can also be used for channel estimation to hel...

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Abstract

The invention discloses a launching method of random switch-in signal based on single carrier launching and receiving system, which consists of random switch-in signal launching end equipment and receiving end equipment, wherein the random switch-in signal contains switch-in front and ascending random switch-in order, which separate launching signal and bind launching; the switch-in front measures synchronous detection and frequency difference of receiving end equipment; the ascending random switch-in order builds effective connection between launching end equipment and network. The invention can select different connecting patterns of switch-in front and ascending random switch-in order according to different working and channel conditions, which guarantees the switch-in probability in the ascending random switch-in course.

Description

technical field [0001] The invention relates to a method for transmitting random signals, in particular to a method for transmitting random access signals in the field of mobile communication. Background technique [0002] The data transmission rate required by the future mobile communication system will be as high as 100Mbit / s, and the supported services will also be extended from voice services to multimedia services (including real-time streaming media services). Technologies that can achieve high speed and large capacity on limited spectrum resources have become a hot research topic at present. Broadband mobile communication systems usually suffer from frequency selectivity of the channel. The so-called frequency selectivity of the channel is that the attenuation of the channel is different at different frequencies. Frequency selective channels usually cause severe intersymbol interference (ISI), intercarrier interference (ICI) and multiple access interference (MAI). ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/12H04L25/03H04B7/26H04Q7/38
Inventor 张峻峰郁光辉胡留军
Owner ZTE CORP
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