Compensation for antenna diagram optimization

An antenna beam and adaptive antenna technology, applied in diversity/multi-antenna systems, wireless communication, radio transmission systems, etc., can solve problems such as hardware limitations and impossibility

Inactive Publication Date: 2004-11-10
TELEFON AB LM ERICSSON (PUBL)
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is desirable to send data in multiplexed beams, this may not be possible due to hardware limitations

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
  • Compensation for antenna diagram optimization
  • Compensation for antenna diagram optimization
  • Compensation for antenna diagram optimization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] best practice

[0027] The invention relates to data transmission networks equipped with adaptive antennas. In particular, the invention compensates for antenna pattern optimization to a mobile station when data to be transmitted to a mobile station is interspersed with data intended for other mobile stations located in different antenna beams than that mobile station.

[0028] In the following description, for purposes of explanation and not limitation, details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one of ordinary skill in the art that the invention may be practiced in other embodiments that depart from these details. In other instances, detailed descriptions of well-known methods, devices, and circuits are omitted so as not to obscure the description of the present invention.

[0029] Figure 5 illustrates a method for implementing adaptive antennas in an EGPRS / GPRS network. As illustrated in Fi...

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

In a radio network which employs adaptive antennas for transmission of data to mobiles methods and apparatus are provided for improving the reception of transmitted data. When a block is to be transmitted in a first beam of the antenna and the block contains information for the mobile in the second beam, a modulation and coding scheme is used for the transmission of the block such that the modulation and coding scheme provides greater protection to the portion of the block containing information for the mobile in the second beam. The use of greater protection for the portion of the block which includes information for the mobile in the second beam increases the probability that the mobile in the second beam can receive and correctly decode the information intended for the mobile in the second beam in the block.

Description

field of invention [0001] The present invention relates generally to packet data communications networks, and more particularly to a method and apparatus for compensating antenna pattern optimization when a transmitted message includes information about more than one mobile station spaced apart. Background of the invention [0002] The growth of commercial communication networks, especially the rapid growth of cellular radiotelephone networks, has forced network designers to seek ways to increase network capacity with communication quality not below user-acceptable thresholds. At the same time, the use of mobile communication devices for data transmission rather than talking has become increasingly popular among users. The possibility of sending and receiving electronic mail and gaining access to the World Wide Web with a browser is frequently discussed as services that will be used more and more in wireless communication networks. In response to this, communication network...

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 & AuthorityApplications(China)
IPC IPC(8): H04B7/04H04L1/00H04W16/28
CPCH04L2001/0092H04B7/0408H04L1/0003H04W16/28H04L1/0015H04L1/0009
InventorM·贝里H·埃里森L·G·伦德S·埃克马克
OwnerTELEFON AB LM ERICSSON (PUBL)