JP5227747B2 - 無線基地局 - Google Patents
無線基地局 Download PDFInfo
- Publication number
- JP5227747B2 JP5227747B2 JP2008287102A JP2008287102A JP5227747B2 JP 5227747 B2 JP5227747 B2 JP 5227747B2 JP 2008287102 A JP2008287102 A JP 2008287102A JP 2008287102 A JP2008287102 A JP 2008287102A JP 5227747 B2 JP5227747 B2 JP 5227747B2
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- JP
- Japan
- Prior art keywords
- ofdm symbols
- base station
- radio base
- subframe
- control channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004891 communication Methods 0.000 claims description 21
- 238000005259 measurement Methods 0.000 claims description 18
- 230000002776 aggregation Effects 0.000 claims description 11
- 238000004220 aggregation Methods 0.000 claims description 11
- 238000010295 mobile communication Methods 0.000 description 25
- 238000013468 resource allocation Methods 0.000 description 20
- 230000005540 biological transmission Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 229930091051 Arenine Natural products 0.000 description 1
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 description 1
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 description 1
- 210000004271 bone marrow stromal cell Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1854—Scheduling and prioritising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Description
図1乃至図5を参照して、本発明の第1の実施形態に係る移動通信システムの構成について説明する。
図6及び図7を参照して、本発明の第1の実施形態に係る移動通信システムの動作について説明する。図6及び図7の例では、通信状況として、送信予定のPDCCHの数Npdcchが用いられるケースについて説明するが、本発明は、通信状況として、「Aggregation Level」の総数やスケジューリング対象の移動局UEの数や送信すべき下りリンクデータが存在する移動局UEの数等が用いられるケースについても適用可能である。
本発明の第1の実施形態に係る移動通信システムによれば、測定区間内の各サブフレームにおいて、通信状況に対応するOFDMシンボル数の最大数を、かかる測定区間の完了後に開始する次の制御区間内の各サブフレームにおける割当可能OFDMシンボル数とすることによって、処理負荷及び処理遅延を考慮して、各サブフレームにおける下りリンクにおける制御チャネルに対して割当可能なOFDMシンボル数を決定することができる。
eNB…無線基地局
11…Aggregation Level決定部
12…下りリンクデータ情報受信部
13…スケジューリング部
14…リソース割当部
Claims (3)
- 所定数のOFDMシンボルによって構成されるサブフレームごとに、下りリンクにおける制御チャネルに対して割当可能な各サブキャリアにおけるOFDMシンボルの数を示す割当可能OFDMシンボル数を決定するように構成されている決定部を具備し、
前記決定部は、測定区間内の各サブフレームにおいて、通信状況に対応するOFDMシンボル数を算出し、算出した該OFDMシンボル数の中の最大数を、該測定区間の完了後に開始する次の制御区間内の各サブフレームにおける前記割当可能OFDMシンボル数とするように構成されており、
前記通信状況は、送信予定の物理下りリンク制御チャネルの数であることを特徴とする無線基地局。 - 所定数のOFDMシンボルによって構成されるサブフレームごとに、下りリンクにおける制御チャネルに対して割当可能な各サブキャリアにおけるOFDMシンボルの数を示す割当可能OFDMシンボル数を決定するように構成されている決定部を具備し、
前記決定部は、測定区間内の各サブフレームにおいて、通信状況に対応するOFDMシンボル数を算出し、算出した該OFDMシンボル数の中の最大数を、該測定区間の完了後に開始する次の制御区間内の各サブフレームにおける前記割当可能OFDMシンボル数とするように構成されており、
前記通信状況は、移動局から通知された受信品質に基づいて決定された集約レベルの総数であり、
前記集約レベルは、連続する複数のリソース要素グループによって構成される制御チャネル要素を何個連続で割り当てるかについて示し、
前記リソース要素グループは、連続する複数のリソース要素によって構成されており、
前記リソース要素は、1つのサブキャリアにおける1つのOFDMシンボルによって構成されていることを特徴とする無線基地局。 - 前記決定部は、所定要因に基づいて、前記通信状況と前記OFDMシンボル数との対応関係を変更するように構成されていることを特徴とする請求項1又は2に記載の無線基地局。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008287102A JP5227747B2 (ja) | 2008-11-07 | 2008-11-07 | 無線基地局 |
EP09824843.8A EP2355603A4 (en) | 2008-11-07 | 2009-11-06 | WIRELESS BASE STATION |
US13/128,135 US9031012B2 (en) | 2008-11-07 | 2009-11-06 | Radio base station |
CN200980144427.6A CN102210182B (zh) | 2008-11-07 | 2009-11-06 | 无线基站 |
PCT/JP2009/068956 WO2010053144A1 (ja) | 2008-11-07 | 2009-11-06 | 無線基地局 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008287102A JP5227747B2 (ja) | 2008-11-07 | 2008-11-07 | 無線基地局 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010114781A JP2010114781A (ja) | 2010-05-20 |
JP5227747B2 true JP5227747B2 (ja) | 2013-07-03 |
Family
ID=42152951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008287102A Active JP5227747B2 (ja) | 2008-11-07 | 2008-11-07 | 無線基地局 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9031012B2 (ja) |
EP (1) | EP2355603A4 (ja) |
JP (1) | JP5227747B2 (ja) |
CN (1) | CN102210182B (ja) |
WO (1) | WO2010053144A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5590141B2 (ja) * | 2010-11-12 | 2014-09-17 | 富士通株式会社 | 基地局、移動局、制御方法および通信システム |
JP6273973B2 (ja) | 2014-03-31 | 2018-02-07 | 富士通株式会社 | 無線通信システム、無線基地局装置及び無線通信システムの制御方法 |
CN105991274B (zh) * | 2015-03-03 | 2019-05-21 | 电信科学技术研究院 | 数据传输的方法、反馈信息传输方法及相关设备 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4671982B2 (ja) * | 2007-01-09 | 2011-04-20 | 株式会社エヌ・ティ・ティ・ドコモ | 基地局、送信方法及び移動通信システム |
US8274940B2 (en) | 2007-02-28 | 2012-09-25 | Ntt Docomo, Inc. | Base station apparatus and communication control method |
JP4906915B2 (ja) | 2007-03-20 | 2012-03-28 | 三菱電機株式会社 | 無線通信方法、無線通信システムおよび基地局 |
US8228783B2 (en) * | 2007-05-04 | 2012-07-24 | Texas Instruments Incorporated | Base station transmitter for use with an OFDM communications system, a method of dynamically allocating OFDM symbols for PDCCH in the system and a user equipment receiver for use with the system |
KR100900289B1 (ko) * | 2007-06-21 | 2009-05-29 | 엘지전자 주식회사 | 직교 주파수 분할 다중화 시스템에서 제어 채널을 송수신하는 방법 |
EP2490493B1 (en) * | 2007-09-26 | 2018-03-07 | Nokia Technologies Oy | Signaling limitation of multiple payload sizes for resource assignments |
-
2008
- 2008-11-07 JP JP2008287102A patent/JP5227747B2/ja active Active
-
2009
- 2009-11-06 EP EP09824843.8A patent/EP2355603A4/en not_active Withdrawn
- 2009-11-06 CN CN200980144427.6A patent/CN102210182B/zh not_active Expired - Fee Related
- 2009-11-06 US US13/128,135 patent/US9031012B2/en not_active Expired - Fee Related
- 2009-11-06 WO PCT/JP2009/068956 patent/WO2010053144A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EP2355603A1 (en) | 2011-08-10 |
US20110255494A1 (en) | 2011-10-20 |
EP2355603A4 (en) | 2016-06-08 |
JP2010114781A (ja) | 2010-05-20 |
CN102210182A (zh) | 2011-10-05 |
CN102210182B (zh) | 2015-04-08 |
US9031012B2 (en) | 2015-05-12 |
WO2010053144A1 (ja) | 2010-05-14 |
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