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Radio communication system, base station device, and channel allocation method

A technology for channel allocation and base station equipment, applied in the direction of wireless communication, electrical components, etc., which can solve the problems of signal throughput deterioration and total throughput deterioration of radio communication systems.

Inactive Publication Date: 2011-11-23
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such radio waves become interference waves that interfere with other base stations, and cause deterioration of the signal throughput of the desired wave
As a result, the overall throughput of the radio communication system deteriorates

Method used

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  • Radio communication system, base station device, and channel allocation method
  • Radio communication system, base station device, and channel allocation method
  • Radio communication system, base station device, and channel allocation method

Examples

Experimental program
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no. 1 example

[0035] figure 1 is a block diagram showing the structure of the radio communication system according to the first embodiment. refer to figure 1 , the radio system has a base station 11 1 to 11 3 , and mobile terminal 12 A1 to 12 A3 、12 B1 、12 B2 、12 C1 and 12 C2 .

[0036] The base station 11 forms a cell through a radio link, and is connected with the mobile terminal 12 present in the cell formed by the own base station. base station 11 1 Form cell c1; base station 11 2 forming cell c2; and base station 11 3 Cell c3 is formed. although figure 1 shows three base stations 11 1 to 11 3 , but generally more base stations 11 are placed, and multiple cells cover the communication area two-dimensionally. Furthermore, in order to satisfactorily complete the handover, the cells c1 to c3 overlap at their borders.

[0037] A plurality of cells formed by a plurality of base stations 11 is divided into a plurality of groups. In this example, it is assumed that the cells...

no. 2 example

[0074] An example in which the present invention is applied to WiMAX will be presented as the second embodiment.

[0075] Figure 6 is a schematic diagram showing the configuration of a communication network including a WiMAX system. refer to Figure 6 , the communication network includes a CSN (Connection Service Network) 41 , an ASN (Access Service Network) 42 , and a WiMAX radio network 43 . A portion where base station 11 and mobile terminal 12 are connected via WiMAX radio network 43 corresponds to the radio communication system according to the first embodiment. The basic structure and operation of base station 11 and mobile terminal 12 according to the second embodiment are the same as those according to the first embodiment.

[0076] The base station 11 of this embodiment is connected to the radio control management device 44 in the ASN 42 . The radio control management device 44 is a device that controls the WiMAX radio network 43 through a radio link, and functio...

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Abstract

Any region among a plurality of regions, that are divided into for each of the groups into which a plurality of base station cells are divided, is determined as a main region. When a mobile terminal receives a signal from a second base station other than a first base station to which the mobile terminal is connected, the mobile terminal reports adjacent state information indicating the group to which the cell of the second base station belongs, to the first base station. The first base station allocates to the mobile terminal, a channel belonging to a region excluding the main region of the group indicated by the adjacent state information reported from the mobile terminal.

Description

technical field [0001] The present invention relates to a radio communication system using a plurality of cells to cover a communication area, and more particularly, to an application technique for a frequency bandwidth of the radio communication system. Background technique [0002] In a radio communication system such as a mobile phone system and WiMAX (Worldwide Interoperability for Microwave Access) that uses a plurality of cells to cover a communication area, there is an overlapping area because the cells are designed to hand over satisfactorily. [0003] If the terminal is present in this area, the terminal receives radio waves transmitted from two or more base stations. Thus, a terminal can switch between base stations, and communication can remain connected even if the terminal moves among them. [0004] However, uplink radio waves from a terminal present where a plurality of cells overlap can reach not only the connected base station but also other base stations. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W72/54
CPCH04W72/082H04W72/0413H04W72/541
Inventor 小野智博
Owner NEC CORP
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