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

Adaptive method for switching between single flow mode and double flow mode

A technology of adaptive switching and dual-stream mode, which is applied in the field of communication, can solve problems such as not a perfect solution, and achieve the effect of improving the throughput of downlink high-speed packet services

Active Publication Date: 2009-02-11
ZTE CORP
View PDF0 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether it is a single-stream mode based on spatial diversity or a dual-stream mode based on spatial multiplexing, it is not a perfect solution for indoor coverage of the TD-SCDMA system alone.

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
  • Adaptive method for switching between single flow mode and double flow mode
  • Adaptive method for switching between single flow mode and double flow mode
  • Adaptive method for switching between single flow mode and double flow mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] figure 1 It is a flow chart of a method for adaptively switching between a single-stream mode and a dual-stream mode for a time-division synchronous code division multiple access system according to the present invention. Wherein, an independent antenna is added to the user terminal, so that the user terminal in the system has two independently fading antennas. The two channels from the Node B to the user terminal mix to cover the coverage area and transmit two transmission blocks to the user terminal at the same time.

[0031] like figure 1 As shown, the adaptive switching method includes the following steps:

[0032] S102, Node B estimates the uplink channel, and evaluates the spatial channel cross-correlation of two transmission blocks in real time according to the channel estimation result.

[0033] S104. Switch to ...

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 invention provides a method for self-adapted switch between a single-current mode and a double-current mode, which is used in a time division SCDMA (Synchronous Code Division Multiple Access) system, wherein, a self-adapted switch method comprises the following steps: S102, a nodal point B estimates an uplink channel, and evaluates the cross correlation of the spatial channel between two transmitting blocks; S104, under the circumstances that the cross correlation of the spatial channel is higher than a first threshold value, the system switches to the single-current mode, and under the circumstances that the cross correlation of the spatial channel is lower than the first threshold value, the subsequent single-current and double-current throughputs are estimated; S106, a nodal point B estimates the throughputs of the single-current mode and the double-current mode according to an instruction of the channel quality of the instruction of the channel quality of the single-current mode and the double-current mode, and under the circumstances that the throughput of the double-current mode is larger than the throughput of the single-current mode by a second threshold, the system switches to the double-current mode, otherwise the system switches to the single-current mode.

Description

technical field [0001] The invention relates to the communication field, in particular to an adaptive switching method for a single-stream mode and a dual-stream mode for a time-division synchronous code division multiple access system. Background technique [0002] Multiple-Input-Output (MIMO) technology is a hot research field in the field of mobile communication in recent years, and it is characterized in that both wireless transmitters and receivers introduce multiple antennas. Compared with the traditional single-input single-output (SISO) system, the MIMO system obtains a great increase in system capacity through space diversity technology or space multiplexing technology. Multiple-input single-output (MISO) and single-input multiple-output (SIMO) are two special forms of MIMO, that is, multiple antennas are only used at one end of the communication link, and a single antenna is still used at the other end. [0003] The mainstream solution for indoor coverage of the e...

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
IPC IPC(8): H04Q7/38H04B7/04H04J11/00
Inventor 耿鹏江海傅强林伟
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