Virtual mimo communication system with uplink space-time codes of colabourated mobile terminals

A mobile terminal and downlink technology, applied in the field of communication, can solve problems such as consumers do not want to bear the cost of MIMO environment

Inactive Publication Date: 2006-03-15
BLACKBERRY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is therefore a wireless infrastructure capable of facilitating MIMO-based communications, however consumers do not wish to incur the cost of implementing this MIMO environment by purchasing a suitably equipped mobile terminal

Method used

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  • Virtual mimo communication system with uplink space-time codes of colabourated mobile terminals
  • Virtual mimo communication system with uplink space-time codes of colabourated mobile terminals
  • Virtual mimo communication system with uplink space-time codes of colabourated mobile terminals

Examples

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Embodiment Construction

Detailed description of the preferred embodiment

[0022] The examples set forth below describe the necessary information to enable those skilled in the art to practice the invention and illustrate the best mode of practicing the invention. Upon reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the invention and will recognize applications of certain concepts not expressly addressed herein. It should be understood that these concepts and applications fall within the scope of this disclosure and the appended claims.

[0023] refer to figure 1 , which illustrates a basic wireless communication environment. Generally speaking, a base station controller (BSC) 10 controls wireless communications within a plurality of cells 12 served by respective base stations (BS) 14 . Each base station 14 facilitates communication with mobile terminals 16 that are within the cell 12 associated with that respe...

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Abstract

The present invention provides an effective way to create a virtual MIMO transmission system using mobile terminals that have only one transmit path and antenna. This is accomplished by assigning mobile terminals to a group and assigning certain shared resources and user-specific resources to those mobile terminals in the group. In a synchronized fashion, the mobile terminals will provide uplink transmission in concert, as if they were a single entity having multiple transmission paths and antennas. Preferably, the shared resources bear on how the data is transmitted, and the user-specific resources relate to pilot signals. The data transmitted may be encoded in any number of ways, and in one embodiment, the mobile terminals may relay their information to each other, such that uplink transmissions can incorporate STTD decoding or other space-time codes. The invention is applicable to virtually any multiple access technology, including OFDM, TDMA, and CDMA, preferably synchronous CDMA.

Description

field of invention [0001] The present invention relates to communication, and more specifically, relates to using some mobile terminals with only a single transmission path and antenna to provide a virtual MIMO communication environment. Background of the invention [0002] With the ever-increasing demand for wireless transmission capacity (whether it be the number of users that can access the system or the rate at which data can be transferred), a multiple-input multiple-output (MIMO) architecture has gradually been developed. A MIMO architecture consists of multiple antennas for transmission and multiple receivers for reception. Combined with various coding techniques, the spatial diversity offered by MIMO systems provides a significant increase in the number of users that can access the system at any given moment, as well as in the amount of data that can be transmitted in a given period of time. Unfortunately, the nature of wireless communications dictates the need for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L25/02H04L27/26H04B1/707H04B7/08H04B7/06H04J11/00H04J13/16H04L1/00
CPCH04L1/0026H04L25/0226H04L5/0026H04L5/0094H04L5/0035H04B7/026H04L1/0618H04J13/16H04B7/0669H04L5/0048H04B7/0891
Inventor W·童J·马P·朱M·贾D·-S·于
Owner BLACKBERRY LTD
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