WO2008007775A1 - Système cellulaire, son procédé d'allocation de porteuses, station de base et station mobile - Google Patents
Système cellulaire, son procédé d'allocation de porteuses, station de base et station mobile Download PDFInfo
- Publication number
- WO2008007775A1 WO2008007775A1 PCT/JP2007/063996 JP2007063996W WO2008007775A1 WO 2008007775 A1 WO2008007775 A1 WO 2008007775A1 JP 2007063996 W JP2007063996 W JP 2007063996W WO 2008007775 A1 WO2008007775 A1 WO 2008007775A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cell
- carrier
- carriers
- mobile station
- base station
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/12—Fixed resource partitioning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/04—Traffic adaptive resource partitioning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
Definitions
- Allocating communicating each of the plurality of mobile stations into a cell-inside mobile station or a cell-outside mobile station, communicating with the cell-inside mobile station using the first carrier, Communicating with the mobile station outside the cell using the second carrier, and using the first carrier in the first cell of the plurality of cells based on the communicated data Measuring the status, measuring the usage status of the second carrier in the second cell of the plurality of cells based on the communicated data, and measuring Changing the number of the second carriers in the second cell based on at least the usage status of the first carrier in the first cell and the usage status of the second carrier in the second cell. And a step of performing.
- FIG. 1 is a configuration diagram of a cellular system in Example 1 and Example 2 of the present invention.
- FIG. 6 is a flowchart showing a method for changing a cell outer carrier in Embodiment 3 of the present invention.
- FIG. 10 is a configuration diagram of a wireless network of a cellular system in another embodiment of the present invention.
- FIG. 11 is a configuration diagram of a base station of a cellular system in another embodiment of the present invention.
- the fourth utilization threshold When it is lower than the fourth utilization threshold, the number of second carriers in the second cell is reduced. By doing so, it is possible to reduce the probability of the shortage of the second carrier in the second cell almost without increasing the probability of the shortage of the first carrier in the first cell. As a result, the carrier utilization efficiency in the cellular system can be increased.
- the base station control device 5 is configured so that the utilization factor U-inner of the cell-inside carrier from the base station 1 is lower than a preset first utilization threshold value Uth-Lowl. If the utilization factor U—outer of cell outer cell from 2 is higher than the preset second utilization threshold value Uth_High2, increase the number of carriers for cell outer cell of base station 2 (step S43, S44, S45).
- the allocation of the carrier outside the cell of the base station 2 is changed in consideration of the utilization rate of the carrier inside the cell of the base station 1.
- the number of carriers outside the cell is increased in the base station 2
- interference caused by using the same carrier simultaneously with the inside of the cell of the base station 1 can be avoided.
- Each of the base stations 1 and 2 calculates, in the above-described predetermined time interval, the average usage number N-inner of the inner cell carrier and the average usage number N of the outer cell carrier calculated as described above. — Notify outer to base station controller 5.
- Each of the base stations 1 and 2 calculates the utilization rate U-inner of the cell inner carrier and the utilization rate U-outer of the cell outer carrier at predetermined time intervals. This calculation method is the same as in Example 1.
- the base stations 1 and 2 exchange information between the U-inner and the U-outer with each other at the predetermined time interval.
- the base station 2 receives the utilization rate U-inner of the cell inner carrier from the base station 1 that forms the cell 3 adjacent to the cell 4 that is its own cell, and is used for the cell outside of the own cell base station 2 Carrier utilization rate U—outer is calculated (steps S71 and S72).
- the base station 2 calculates a cell in which the average usage number N-inner of the cell-inside carrier from the base station 1 is lower than a preset first usage number threshold value Nth- Lowl. If the average number of outside carriers N—outer is higher than the preset second number threshold Nth—High2, increase the number of carriers outside the cell of the base station 2 (step S83, S84, S85).
- a plurality of carriers can be used for communication between carrier group 1 that can be used for communication with mobile stations inside the cell and with mobile stations that are outside the cell. It is divided into two career groups.
- carrier group 1 OFDM (Orthogonal Frequency Division Multiplexing) is used as it is, but in carrier group 2, code multiplexing is further performed in the OFDM system, so that the same cell is used in the same carrier.
- Multiple mobile stations can communicate with the base station at the same time not only within but also in neighboring cells!
- a carrier that has been changed to a cell-outside carrier may be used as a cell-inside carrier in an adjacent cell.
- the carrier carrier number 3
- the base station 1 of the cell 3 continues to use it as a cell inner carrier.
- the configuration of the cellular system and the increase in the carrier for the outside of the cell is the same as that of the fourth embodiment, but the arrangement of carriers that can be used in each cell is different from the fourth embodiment described above, and is the same as the fifth embodiment described above.
- the other parts are the same as those of the above-described fourth embodiment, and thus the description thereof is omitted.
- the wireless network, base station, and mobile station of the cellular system are configured as follows. Make it.
- the measurement unit 43 uses the first carrier in the first cell of the plurality of cells and the first cell in the second cell of the plurality of cells. Measure the usage status of the second carrier.
- the notification unit 44 notifies the base station controller 45 of the usage status of the first carrier in the first cell and the usage status of the second carrier in the second cell.
- the base station control device 45 changes the number of second carriers in the second cell based on the notification from the notification unit 44 of the base station 41.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0902313A GB2454399B (en) | 2006-07-13 | 2007-07-13 | Cellular system, carrier allocation method thereof, base station, and mobile station |
JP2008524857A JP4978850B2 (ja) | 2006-07-13 | 2007-07-13 | セルラシステム、そのキャリア割当方法、基地局、及び移動局 |
US12/373,067 US8229444B2 (en) | 2006-07-13 | 2007-07-13 | Cellular system, carrier allocation method thereof, base station, and mobile station |
CN2007800266412A CN101491132B (zh) | 2006-07-13 | 2007-07-13 | 蜂窝系统、其载波分配方法、基站和移动台 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006192884 | 2006-07-13 | ||
JP2006-192884 | 2006-07-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008007775A1 true WO2008007775A1 (fr) | 2008-01-17 |
Family
ID=38923331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/063996 WO2008007775A1 (fr) | 2006-07-13 | 2007-07-13 | Système cellulaire, son procédé d'allocation de porteuses, station de base et station mobile |
Country Status (5)
Country | Link |
---|---|
US (1) | US8229444B2 (ja) |
JP (1) | JP4978850B2 (ja) |
CN (1) | CN101491132B (ja) |
GB (1) | GB2454399B (ja) |
WO (1) | WO2008007775A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012515459A (ja) * | 2009-01-14 | 2012-07-05 | エヌイーシー ヨーロッパ リミテッド | WiMAXネットワークのフェムトセル基地局に対する干渉軽減方法 |
JP2012529796A (ja) * | 2009-06-08 | 2012-11-22 | ゼットティーイー コーポレーション | 隣接セルの干渉を除去する方法及びシステム |
JP2013157998A (ja) * | 2007-03-01 | 2013-08-15 | Ntt Docomo Inc | 基地局装置 |
JP2020031352A (ja) * | 2018-08-23 | 2020-02-27 | 日本無線株式会社 | 無線通信システム |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5123985B2 (ja) * | 2010-05-13 | 2013-01-23 | 株式会社エヌ・ティ・ティ・ドコモ | 無線基地局及び移動通信方法 |
US9125226B2 (en) * | 2010-09-08 | 2015-09-01 | Nec Corporation | Wireless communication system, neighbor cell list optimization system, base station, and neighbor cell list update method |
GB2492948A (en) | 2011-07-04 | 2013-01-23 | Nec Corp | Allowing a mobile communication device to use a secondary component carrier if it is within a secondary cell of a base station |
US9392612B2 (en) * | 2011-11-25 | 2016-07-12 | Nec Corporation | Cell identifier allocation method, base station, maintenance server, and mobile communication system |
WO2016010167A1 (ko) * | 2014-07-15 | 2016-01-21 | 엘지전자 주식회사 | 자원 할당 방법 및 단말의 신호 처리 방법 |
Citations (5)
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---|---|---|---|---|
EP0531090A2 (en) * | 1991-09-03 | 1993-03-10 | Nippon Telegraph And Telephone Corporation | Cells re-use partition in a mobile communication system |
JPH06311089A (ja) * | 1993-04-21 | 1994-11-04 | Nec Commun Syst Ltd | 周波数再利用方式 |
EP0946071A2 (en) * | 1998-03-26 | 1999-09-29 | Nec Corporation | Cellular system and frequency carrier allocation method therefor |
JP2000138965A (ja) * | 1998-11-04 | 2000-05-16 | Nec Saitama Ltd | 無線基地局及びその制御方法並びに制御プログラム記録媒体 |
EP1418776A1 (en) * | 2002-11-07 | 2004-05-12 | Samsung Electronics Co., Ltd. | Frequency reuse method in an orthogonal frequency division multiplex mobile communication system (OFDM) |
Family Cites Families (8)
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FI91344C (fi) * | 1991-03-05 | 1994-06-10 | Nokia Telecommunications Oy | Solukkoradioverkko, tukiasema sekä menetelmä liikennekapasiteetin säätämiseksi alueellisesti solukkoradioverkossa |
JPH089464A (ja) | 1994-06-23 | 1996-01-12 | Toshiba Corp | セルラ移動通信システムの無線チャネル割当方法 |
JP3029576B2 (ja) | 1996-10-08 | 2000-04-04 | 株式会社ワイ・アール・ピー移動通信基盤技術研究所 | チャネル割当て方法および該方法を使用する通信網 |
US6069871A (en) * | 1997-07-21 | 2000-05-30 | Nortel Networks Corporation | Traffic allocation and dynamic load balancing in a multiple carrier cellular wireless communication system |
JP2937981B2 (ja) * | 1998-01-20 | 1999-08-23 | 株式会社ワイ・アール・ピー移動通信基盤技術研究所 | チャネル割当て方法および移動通信網 |
JP3851525B2 (ja) * | 2001-08-09 | 2006-11-29 | 株式会社エヌ・ティ・ティ・ドコモ | 移動局装置、移動通信システムおよびキャリア検出方法 |
JP4247059B2 (ja) | 2003-07-04 | 2009-04-02 | 株式会社エヌ・ティ・ティ・ドコモ | 制御局、無線通信システム、及び周波数割当て方法 |
US7471621B2 (en) * | 2006-04-06 | 2008-12-30 | Motorola, Inc. | Method and apparatus for dynamic adjustment of orthogonal frequency-division multiplexing during congested conditions |
-
2007
- 2007-07-13 WO PCT/JP2007/063996 patent/WO2008007775A1/ja active Application Filing
- 2007-07-13 CN CN2007800266412A patent/CN101491132B/zh not_active Expired - Fee Related
- 2007-07-13 US US12/373,067 patent/US8229444B2/en not_active Expired - Fee Related
- 2007-07-13 JP JP2008524857A patent/JP4978850B2/ja not_active Expired - Fee Related
- 2007-07-13 GB GB0902313A patent/GB2454399B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0531090A2 (en) * | 1991-09-03 | 1993-03-10 | Nippon Telegraph And Telephone Corporation | Cells re-use partition in a mobile communication system |
JPH06311089A (ja) * | 1993-04-21 | 1994-11-04 | Nec Commun Syst Ltd | 周波数再利用方式 |
EP0946071A2 (en) * | 1998-03-26 | 1999-09-29 | Nec Corporation | Cellular system and frequency carrier allocation method therefor |
JP2000138965A (ja) * | 1998-11-04 | 2000-05-16 | Nec Saitama Ltd | 無線基地局及びその制御方法並びに制御プログラム記録媒体 |
EP1418776A1 (en) * | 2002-11-07 | 2004-05-12 | Samsung Electronics Co., Ltd. | Frequency reuse method in an orthogonal frequency division multiplex mobile communication system (OFDM) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013157998A (ja) * | 2007-03-01 | 2013-08-15 | Ntt Docomo Inc | 基地局装置 |
JP2012515459A (ja) * | 2009-01-14 | 2012-07-05 | エヌイーシー ヨーロッパ リミテッド | WiMAXネットワークのフェムトセル基地局に対する干渉軽減方法 |
JP2012529796A (ja) * | 2009-06-08 | 2012-11-22 | ゼットティーイー コーポレーション | 隣接セルの干渉を除去する方法及びシステム |
JP2020031352A (ja) * | 2018-08-23 | 2020-02-27 | 日本無線株式会社 | 無線通信システム |
JP7233181B2 (ja) | 2018-08-23 | 2023-03-06 | 日本無線株式会社 | 無線通信システム |
Also Published As
Publication number | Publication date |
---|---|
GB2454399B (en) | 2011-01-19 |
US8229444B2 (en) | 2012-07-24 |
US20100003998A1 (en) | 2010-01-07 |
JP4978850B2 (ja) | 2012-07-18 |
GB0902313D0 (en) | 2009-04-01 |
GB2454399A (en) | 2009-05-06 |
CN101491132B (zh) | 2011-06-08 |
JPWO2008007775A1 (ja) | 2009-12-10 |
CN101491132A (zh) | 2009-07-22 |
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