Method and system for transmitting same-phase orthogonal data

A data transmission method and in-phase quadrature technology, which is applied in the field of in-phase and quadrature data transmission methods and systems, can solve the problems that the protocol does not provide support, and achieve the effect of enhancing compatibility

Active Publication Date: 2010-05-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] For other 2G and 3G standards, such as Global system for Mobile Communication (GSM for short), CDMA, TDSCDMA, etc., the protocol does not provide support. In addition, the protocol does not provide support for the transmission method of multiple standards on the same CPRI interface. provide support

Method used

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  • Method and system for transmitting same-phase orthogonal data
  • Method and system for transmitting same-phase orthogonal data
  • Method and system for transmitting same-phase orthogonal data

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0071] This example is a dual-mode transmission example of CDMA and LTE (5Mhz bandwidth) at a line rate of 1.2288Gbps, using Mapping Method 1. The specific implementation steps are as follows:

[0072] Step 1A, select IQ mapping method as Mapping Method 1 for CDMA, LTE (5Mhz bandwidth), then, determine the size N of its AxC Container AxC , and the relevant parameters of its IQ mapping method.

[0073] In this example, the IQ data-related parameters of CDMA and LTE (5Mhz bandwidth) are shown in Table 1, wherein at the uplink 1.2288Mhz rate at the CPRI interface of CDMA, one IQ data contains 2 times oversampled IQ data and 2 receive diversity Antenna data, whose IQ data sampling bit width M' is 4.

[0074] Table 1

[0075]

downlink IQ

data speed

Rate(Mhz)

downlink IQ

data bit

Width (Bit)

downlink

IQ passed

sampling

multiple

Down

Row

send

shoot

Minute

set...

example 2

[0088] This example is an application example of CDMA and WiMAX dual-mode at 1.2288Gbps. CDMA uses Mapping Method 3, and WiMAX uses Mapping Method 2. The specific description is as follows:

[0089] Step 2A, firstly determine the IQ mapping method, choose Mapping Method 3 for CDMA, and Mapping Method 2 for WiMAX, then determine the size NAxC of its AxC Container, and the relevant parameters of its IQ mapping method.

[0090]In this example, the IQ data parameters of CDMA are shown in Table 4, wherein, one IQ data at the uplink 1.2288Mhz rate at the CPRI interface contains 2 times oversampled IQ data and 2 receive diversity antenna data, and its IQ data sampling bit The width M' is 4.

[0091] In this instance, the IQ data parameters of WiMAX are shown in Table 5.

[0092] Table 4

[0093] CPRI

interface parameters

number

downlink IQ

data speed

Rate

(Mhz)

downlink IQ

data bit

width

(Bit)

downlink

IQ...

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Abstract

The invention discloses a method and a system for transmitting same-phase orthogonal data. The method comprises the following steps of: for one or more standards, determining an IQ mapping mode adopted by each standard, and determining information on AxC Container in the IQ mapping mode corresponding to each standard and parameters of the standard in the corresponding IQ mapping mode; dividing an IQ data block (IQ Data Block) of a basic frame, wherein the divided IQ Data Block comprises a part for loading the AxC Container of all the standards and a part for providing a timing reference of AxC Container Block; and transmitting and / or restoring radio service IQ data of the standard on a CPRI interface by using radio equipment controller (REC) or radio equipment (RE) according to the determined IQ mapping mode corresponding to the standard. The method and the system enhance the compatibility and the flexibility of the interface.

Description

technical field [0001] The present invention relates to the communication field, in particular to an In-Phase / Quardrature (IQ) data transmission method and system based on a Common Public Radio Interface (CPRI for short) protocol. Background technique [0002] The Common Public Radio Interface (CPRI for short) Alliance is an industrial cooperation organization dedicated to the main communication between the Radio Equipment Controller (REC for short) and the Radio Equipment (RE for short) inside the wireless base station. Development of interface specifications. As a supplement to the 3rd Generation Partnership Project (referred to as 3GPP), the CPRI protocol enables flexible and effective differences between products, and also enables each part of the base station to better learn from technologies in their respective fields. benefit from progress. The establishment of CPRI is conducive to the standardization of wireless base station supporting products, enabling communicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/18H04W56/00
CPCH04L27/36
Inventor 邓志行李继洲
Owner ZTE CORP
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