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Same-phase IQ(In-phase Quadrate) data compression method and device

A technology of in-phase quadrature and data compression, applied in the direction of digital transmission system, baseband system components, code conversion, etc., can solve the problems of LTE wireless communication system cost increase, avoid frequent equipment update, reduce optical port rate, bit rate, etc. The effect of wide reduction

Inactive Publication Date: 2014-06-11
ZTE CORP
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Problems solved by technology

Due to the increase of the optical port rate, the data traffic between the eBBU and eRRU in the eNodeB will also increase. Therefore, the throughput requirements for the eBBU and eRRU are getting higher and higher. When the eBBU and eRRU cannot meet the throughput requirements When required, the eBBU and eRRU need to be updated, which will lead to an increase in the cost of maintaining the LTE wireless communication system

Method used

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  • Same-phase IQ(In-phase Quadrate) data compression method and device
  • Same-phase IQ(In-phase Quadrate) data compression method and device

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Embodiment Construction

[0039] The basic idea of ​​the present invention is: eRRU judges whether the IQ data is a physical random access channel (Physical Random Access Channel, PRACH) that needs predetermined quantization processing according to the time-frequency information carried in the IQ data sent by each antenna Information or data information of a traffic channel; the PRACH information that needs to be quantized is judged to be quantized with 15 bits, and the data information of a traffic channel that is judged to be quantized is quantized with bits less than 15; after that Send the quantized data to the eBBU.

[0040] The invention provides a method for in-phase and quadrature data compression, such as figure 1 As shown, the method includes:

[0041] Step 101, each antenna of the eNodeB receives IQ data respectively, and sends the received IQ data to the eRRU, and the IQ data carries time-frequency information.

[0042] Wherein, the IQ data includes PRACH information and traffic channel d...

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Abstract

Disclosed is a method for compressing in-phase quadrature (IQ) data, which comprises: an evolved radio remote unit (eRRU), according to time-and-frequency information carried in IQ data sent from each antenna, determining whether the IQ data is physical random access channel (PRACH) information or data information of a service channel that requires predetermined quantization processing; performing quantization processing using 15 bits on the PRACH information that requires predetermined quantization processing, and performing quantization processing using 15 bits on the data information of the service channel that requires predetermined quantization processing; and sending the data after quantization processing to an evolved building baseband unit (eBBU). Also disclosed are an eRRU and an evolved base station (eNodeB). The embodiments of the present invention can reduce the rate of an air interface and avoid frequent replacement of devices.

Description

technical field [0001] The invention relates to data compression technology in mobile communication, in particular to an in-phase quadrature (In-phase Quadrature, IQ) data compression method and device. Background technique [0002] The Long Term Evolution (LTE) wireless communication system is composed of an evolved base station (Evolved NodeB, eNodeB), and the eNodeB includes an evolved indoor baseband processing unit (Evolved Building Baseband Unit, eBBU) and an evolved remote radio unit (Evolved Radio Remote Unit, eRRU), the eBBU and the eRRU are connected through an optical fiber or a cable. [0003] The eBBU includes a radio equipment controller (Radio Equipment Control, REC), and the eRRU includes radio equipment (Radio Equipment, RE), and the REC and the RE are connected through a common public radio interface (Common Public Radio Interface, CPRI ) protocol, or an open radio interface (Open Radio Interface, ORI) protocol for data interaction, and the data transmissi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/06H04L25/03H04L1/00
CPCH03M7/3059H04W88/085H04L27/3405H04W74/0833
Inventor 张帅向际鹰许进胡留军
Owner ZTE CORP
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