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Gateway device, method for controlling radio transmission, and radio communication system

A technology of wireless transmission and control method, which is applied in the field of gateway device, wireless transmission control and wireless communication system, can solve the problems of radio wave interference in adjacent cells, waste of transmission power, etc., and achieve the effect of avoiding unnecessary waste

Inactive Publication Date: 2011-05-11
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] However, according to the existing wireless communication system 100A, for example, although the user using MS 102 is not present, that is, MS 102 is not in the calling area of ​​Femto BS 107, the wireless transmission from Femto BS 107 to MS 102 is continued, so the wireless transmission output sometimes becomes the cause of transmission. Unnecessary waste of power and unnecessary radio wave interference to adjacent cells

Method used

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  • Gateway device, method for controlling radio transmission, and radio communication system
  • Gateway device, method for controlling radio transmission, and radio communication system
  • Gateway device, method for controlling radio transmission, and radio communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] figure 1 It is a block diagram showing a schematic configuration inside the radio communication system of this embodiment.

[0067] figure 1 The shown wireless communication system 1 has: ASN4, which accommodates and connects a plurality of BSs that wirelessly accommodate a plurality of MS2; the Internet 5; CSN6, which connects the ASN4 and the Internet 5; In homes and offices, it is used to accommodate multiple MS2 wirelessly; and ISP8, which is connected to FemtoBS7, is connected to Internet 5 through optical fiber lines or ADSL lines.

[0068] MS2 corresponds to, for example, a personal computer, a mobile terminal, or a mobile phone terminal having a wireless function.

[0069] Each BS3 has a paging area in which wireless accommodation can be performed for each BS3, and each BS3 is used to wirelessly accommodate MS2 in the paging area. In addition, each Femto BS 7 also has a paging area capable of wirelessly accommodating each Femto BS 7 , and each Femto BS 7 is...

Embodiment 2

[0247] Figure 18 It is a block diagram showing a schematic configuration inside Femto GW12A of the second embodiment. Figure 19 It is a block diagram showing a schematic configuration inside the ASN-GW11A of the second embodiment. In addition, the same reference numerals are assigned to the same configurations as those of the wireless communication system 1 of the first embodiment, and descriptions of overlapping configurations and operations are omitted.

[0248] Figure 18 The Femto GW side control unit 45A inside the Femto GW12A shown does not have a PC unit 52 with a call controller function, but an authentication unit 51, a pre-movement determination unit 53, a first connection presence determination unit 54, and an activation status determination unit. unit 55 , command control unit 56 , second connection presence / absence determination unit 57 , and idle state determination unit 58 .

[0249] Figure 19 The shown ASN-GW11A has: the third communication interface 71,...

Embodiment 3

[0356] In addition, the same reference numerals are assigned to the same configurations as those of the wireless communication system 1 of the first embodiment, and descriptions of overlapping configurations and operations are omitted. Figure 27 It is a sequence diagram showing the processing operation inside the wireless communication system 1B following handover from Femto BS7 to another BS3.

[0357] When the reception quality of the radio signal from Femto BS7 falls below a fixed threshold, MS2 initiates handover (hereinafter referred to as HO) of switching the connection from Femto BS7 to another BS3 with good reception quality.

[0358] MS2 sends an MSHO request (MOB MSHO-REQ) message to Femto BS7 after detecting that HO is started (step S311). In addition, MS2 periodically performs a wireless scanning operation to detect connection destination BS3 and Femto BS7 (target BS), and measures the reception quality of wireless signals for Femto BS7 and BS3 near MS2 in advance...

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Abstract

A femto GW (12) provides a network connection to an MS (2) that is radio-accommodated in a femto BS (7). Upon reception of a confirmation of a position registration for the MS (2), if the MS (2) has been radio-accommodated in a BS (3) or the femto BS (7) within a specific calling area including a calling area for the femto BS (7) immediately before reception of the confirmation of the position registration, and the MS (2) that has been radio-accommodated in the specific calling area is withdrawing itself from the calling area, a transmission stop command for stopping radio transmission to the MS (2) is sent to the femto BS (7).

Description

technical field [0001] The present invention relates to a gateway device, a wireless transmission control method, and a wireless communication system using a wireless base station (Base Station, hereinafter abbreviated as BS) for wirelessly accommodating a wireless terminal (Mobile Subscriber, hereinafter abbreviated as MS). As an application example of the wireless base station, a very small wireless base station (Femto Base Station, hereinafter abbreviated as Femto BS) can be cited. Background technique [0002] In recent years, the IEEE 802.16 working group has defined a Point-to-Multipoint (hereinafter abbreviated as P-MP) type communication method capable of connecting a plurality of MSs to a BS. [0003] In addition, the IEEE802.16 working group defines two types of applications, the 802.16d specification (802.16-2004) mainly for fixed communication applications, and the 802.16e specification (802.16e-2005) for mobile communication applications. [0004] In this wirel...

Claims

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Application Information

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IPC IPC(8): H04W76/02
CPCH04W84/045H04W36/08H04W52/0206H04W68/02H04W76/30Y02D30/70
Inventor 奥田将人
Owner FUJITSU LTD
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