Communication system, main unit, radio access unit and communication method

a communication system and radio access technology, applied in the field of communication systems, a main unit, a radio access unit and a communication method, to achieve the effects of reducing costs, flexible response, and ensuring a wide coverag

Inactive Publication Date: 2013-01-03
NOKIA SOLUTIONS & NETWORKS OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0018]According to the present invention, it is possible to flexibly respond to a change in a system without necessity of significant change in an existing system configuration, thereby making it possible to reduce costs entailed in introduction of the system, secure a wide coverage, and improve a user throughput.

Problems solved by technology

For example, a problem arises in a situation where a user performing communication involving a high occupancy rate of a radio band shared by a plurality of users exists in a single cell.

Method used

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  • Communication system, main unit, radio access unit and communication method
  • Communication system, main unit, radio access unit and communication method
  • Communication system, main unit, radio access unit and communication method

Examples

Experimental program
Comparison scheme
Effect test

embodiment 1

[0028]FIG. 2 is a diagram showing a configuration of communication system 100 according to Embodiment 1 of the present invention.

[0029]Communication system 100 is mainly formed of radio base station apparatus 102, core network (CN) 103, termination unit (OLT) 104, termination unit (ONU) 105, router 106, main unit 107, and a plurality of radio access units 108-1 to 108-n (n is any natural number equal to or greater than 2)

[0030]Radio base station apparatus 102 and main unit 107 are connected via one electrical signal transmission cable such as a coaxial cable. Main unit 107 and each of radio access units 108-1 to 108-n are star-connected via one optical signal transmission cable such as an optical fiber. Each component will be described below.

[0031]In the present embodiment, an example case of employing WCDMA (Wideband Code Division Multiple Access) for the first communication system and LTE (Long Term Evolution) for the second communication system will be described. The WCDMA-based ...

embodiment 2

[0074]FIG. 5 is a diagram showing a configuration of communication system 500 according to Embodiment 2 of the present invention.

[0075]Communication system 500 shown in FIG. 5 includes radio base station apparatus 501 instead of radio base station apparatus 102, main unit 502 instead of main unit 107, and radio access units 503-1 to 503-n instead of radio access units 108-1 to 108-n, as compared to communication system 100 according to Embodiment 1 shown in FIG. 2. Parts in FIG. 5 that are identical in configuration to parts in FIG. 2 are assigned the same reference signs as in FIG. 5, and explanation thereof will be omitted here.

[0076]Communication system 500 is mainly formed of core network (CN) 103, termination unit (OLT) 104, termination unit (ONU) 105, router 106, radio base station apparatus 501, main unit 502, and a plurality of radio access units 503-1 to 503-n.

[0077]Core network 103 and radio base station apparatus 501 are connected via one electrical signal transmission c...

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PUM

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Abstract

A plurality of radio access units (108-1 to 108-n) form the single cell (#120) of a first communication system, while forming respective individual multi-cells (#130-1 to #130-n) of a second communication system within the single cell (#120). The plurality of radio access units (108-1 to 108-n) transmit a downstream signal of the first communication system input from a main unit (107) to a terminal using the first communication system of the single cell (#120), while each transmitting a downstream signal of the second communication system input from the main unit (107) to a terminal using the second communication system of the corresponding respective one of the multi-cells (#130-1 to #130-n).

Description

TECHNICAL FIELD[0001]The present invention relates to a communication system, a main unit, a radio access unit and a communication method. More particularly, the present invention relates to a communication system, a main unit, a radio access unit and a communication method for making space where any radio wave signal from a radio base station installed outdoors can not be received, for example, in buildings or underground malls, usable as a coverage area.BACKGROUND ART[0002]A communication system shown in FIG. 1 is known as a conventional communication system. FIG. 1 is a diagram showing conventional communication system 1. Communication system 1 in FIG. 1 is mainly formed of radio base station apparatus 2, main unit 3, and a plurality of handsets 4. A plurality of handset 4 define single cell #10.[0003]In communication system 1 in FIG. 1, radio base station apparatus 2 transmits a downlink signal to main unit 3 and main unit 3 splits the downlink signal and distributes the downlin...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04W72/04H04J14/02
CPCH04B10/25754H04W88/10H04W88/085H04B10/25752H04J14/02H04L5/003
Inventor SATO, TAKAASKIGOTO, FUMITOSHISHIOHARA, MASAFUMI
Owner NOKIA SOLUTIONS & NETWORKS OY
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