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Communication traffic control method

A communication traffic volume and control method technology, which is applied in the field of communication traffic control, can solve problems such as large interference, no arrival, and does not involve hierarchical mobile communication systems, so as to achieve the effect of increasing reliability

Inactive Publication Date: 2003-10-08
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0032] However, the invention does not relate to hierarchical mobile communication systems
Moreover, transmit electric power control that does not involve handover and site diversity
[0033] In a hierarchical mobile communication system including a mobile station, a microcell, and a macrocell including the microcell, there is a problem that, in the above-mentioned mobile station, since the traffic channel preamble is transmitted with predetermined electric power set in advance, the In the case where its electric power is to reach the required minimum transmission power value of the microcell base station forming the macrozone, the above-mentioned traffic channel preamble does not reach the microcell base station forming the macrozone, and the macrocell base station and the microcell base station cannot be transmitted. site diversity
[0034] In addition, there is also a problem that when the above-mentioned electric power is the minimum transmission power required to reach the macro cell base station, the interference to the mobile station connected to the micro cell base station is large, causing a call to the mobile station connected to the micro cell base station. loss

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0051] figure 1 It is a diagram showing the configuration of a hierarchical mobile communication system including a mobile station, a microcell, and a macrocell including the microcell, to which the communication traffic control method according to Embodiment 1 of the present invention is applied. In the figure, 1 is a fixed telephone network such as a public telephone network. 2a is the first public mobile communication network connected to the fixed telephone network 1, 2b is the second public mobile communication network also connected to the fixed telephone network 1, and 3 is a public telephone connected to the fixed telephone network 1.

[0052] Reference numeral 4 denotes a macro cell base station, which is connected to the first public mobile communication network 2a via a communication line, and outputs a control signal including a base station ID as its unique information. 5a is a first microcell base station, which is connected to the first public mobile communicat...

Embodiment approach 2

[0079] Figure 4 It is an explanatory diagram showing the dynamic use of the large communication capacity of the above-mentioned hierarchical mobile communication system in Embodiment 2 of the present invention. in the Figure 4 , the vertical axis is traffic, and the horizontal axis is time. Moreover, the solid line curve represents the total traffic used for communication in the macro area at a predetermined time, the dotted line curve uses the value of the high bit rate codec as the upper limit, and the value of the low bit rate codec is used as the upper limit. The value of the device is used as the range of the communication capacity of the macro area represented by the lower limit value.

[0080] Additionally, in the Figure 4 , the macro-area communication capacity and communication volume are represented by curves of continuous values, but they are also the same as the line graphs given by cumulative values ​​for a certain period of time such as every 30 minutes or ...

Embodiment approach 3

[0084] In addition, in the above-mentioned embodiment, the case where the traffic volume is controlled by automatically implementing the forced handover has been described, but it is also possible to notify the network manager of the judgment result of whether or not the mobile relay device is necessary, and at the same time notify the relaying required content.

[0085] Figure 5 It is a diagram showing the configuration of a hierarchical mobile communication system including a mobile station, a micro cell, and a macro cell including the micro cell to which the communication traffic control method according to Embodiment 3 of the present invention is applied, and a considerable part is attached with figure 1 The same symbols are used and their explanations are omitted.

[0086] Among the figure, 10 is a mobile relay station wirelessly connected to the public mobile communication network (the first public mobile communication network 2a in the illustrated example), and 11 is ...

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Abstract

A communication traffic control method of hierarchy mobile communication system comprising mobile stations, micro cells and a macro cell including those micro cells. An upstream transmission power of a mobile station hand-overed to a macro cell from an adjacent macro cell or that of a mobile station located in the vicinity of a macro cell area border interferes with the communication of a mobile station within a micro cell. In order to allow the mobile station located within the micro cell to maintain a good communication quality against the foregoing interference, the communication traffic is controlled in such a manner that when a forced hand over is performed, it is directed to a mobile station exhibiting a long or immeasurable round trip time.

Description

technical field [0001] The present invention relates to a communication traffic control method in a hierarchical mobile communication system using CDMA (Code Division Multiple Access) as a communication mode and including a mobile station, a micro cell and a macro cell containing the micro cell. Background technique [0002] Existing technology 1. [0003] In high-traffic areas such as metropolitan areas, hierarchical mobile communication systems that locally cover microcell base stations are being considered. This kind of mobile communication system can reduce the construction cost of the system because a small number of base stations can cover the service area compared with the occasion where the system is constituted by only microcell base stations. Furthermore, the load on the micro base station can be reduced by having the macro base station instead perform processing such as call processing and location registration. [0004] Further, by connecting a mobile station m...

Claims

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Application Information

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IPC IPC(8): H04B7/005H04W16/32H04W36/04H04W52/40
CPCH04W16/32H04W36/04H04W52/40
Inventor 片冈正行
Owner MITSUBISHI ELECTRIC CORP
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