Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Data transmission method and system for realizing compatibility of CDMA and WCDMA

A data transmission method and data technology, which are applied in the field of data transmission in mobile communications, can solve the problems of high resource consumption, unfavorable smooth switching of different systems, compatibility between WCDMA system and CDMA system, etc.

Active Publication Date: 2014-08-20
ZTE CORP
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The compatibility method between the existing WCDMA system and the CDMA system is to switch between the two sets of codes, which cannot be unified at the bottom layer, that is, it cannot be truly called the compatibility between the WCDMA system and the CDMA system. Therefore, the existing technology needs to pass through different optical fibers or cables. Realize the interconnection and intercommunication between REC and RE, which consumes a lot of resources and is not conducive to the smooth switching of different standards

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Data transmission method and system for realizing compatibility of CDMA and WCDMA
  • Data transmission method and system for realizing compatibility of CDMA and WCDMA
  • Data transmission method and system for realizing compatibility of CDMA and WCDMA

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Figure 6 A schematic flow chart of a data transmission method for implementing CDMA and WCDMA compatibility in Embodiment 1 of the present invention, such as Figure 6 As shown, Embodiment 1 of the present invention realizes that the data transmission method compatible with CDMA and WCDMA includes:

[0094] Step 601: Determine the corresponding relationship between the CDMA data rate and the CPRI basic frame rate.

[0095] Since the period of the CPRI basic frame is 1 / 3.84MHz, that is, the period of 1CHIP, and the period of 1CHIP of CDMA is 1 / 1.2288MHz, the least common multiple relationship between the two is determined: 25 / 3.84=8 / 1.2288.

[0096] Step 602: According to the corresponding relationship between the CDMA data rate determined in step 601 and the CPRI basic frame rate, appropriately change the CDMA data structure.

[0097] The changed form is shown in formula (2), which is 25=3×8+1 in the present embodiment, that is to say, 3 basic frames of CPRI correspo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention discloses a method for realizing compatible data transmission of WCDMA and CDMA, which includes the following steps: a transmitter maps service data of CDMA system and / or WCDMA system to Common Public Radio Interface (CPRI) basic frames, and according to a system configuration allocates it to the CPRI basic frames; the transmitter sends the CPRI basic frames and the system configuration information to a receiver, the receiver deframes the received CPRI basic frames, deinterlaces data, demultiplexes according to the system configuration information, and demaps the demultiplexed data to recover the data format required by the corresponding system. The present invention also correspondingly discloses a system for realizing compatible data transmission of WCDMA and CDMA. The present invention can realize that CDMA single-mode service data, WCDMA single-mode service data or WCDMA / CDMA double-mode service data are transmitted on one same physical connection, thereby saving the device resources and being favorable to the smooth switch among different modes.

Description

technical field [0001] The invention relates to data transmission technology in mobile communication, in particular to a data transmission method and system for realizing the compatibility between code division multiple access (CDMA) and wideband code division multiple access (WCDMA). Background technique [0002] In recent years, the development of communication system architecture has gradually formed such a trend: the radio frequency unit and the baseband processing unit are separated, and the two are connected through long-distance transmission means (such as optical fiber), and then the radio frequency unit is placed in various places where needed . This architecture improves the flexibility of networking on the one hand, and reduces the maintenance cost of the network on the other hand. Therefore, this architecture is more and more recognized by users, and there are more and more application occasions. In 2003, this architecture was proposed as part of the CPRI (Comm...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L29/06H04B7/26H04W28/06H04B1/707
CPCH04B1/707
Inventor 李继洲邓志行张攀科
Owner ZTE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com