JP2013232965A - 過負荷インジケータを無線で送信する方法および装置 - Google Patents
過負荷インジケータを無線で送信する方法および装置 Download PDFInfo
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- H04L27/00—Modulated-carrier systems
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- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0072—Error control for data other than payload data, e.g. control data
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
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- 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
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0284—Traffic management, e.g. flow control or congestion control detecting congestion or overload during communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
- H04L27/26136—Pilot sequence conveying additional information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
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Abstract
【解決手段】1つの構成では、過負荷インジケータは、セルのための少なくとも1つの同期信号と基準信号との間の位相差として送信され得る。別の構成では、過負荷インジケータは、セルのための少なくとも1つの同期信号の連続する送信の間の位相差として送信され得る。さらに別の構成では、過負荷インジケータは、上記過負荷インジケータを送信するための予約されたリソース上でセルによって送信され得る。さらに別の構成では、過負荷インジケータは、低再利用チャネルまたはブロードキャストチャネル上でセルによって送信され得る。全ての構成について、UEは、隣接セルから過負荷インジケータを受信し、各隣接セルについての過負荷インジケータに基づいて、その隣接セルの負荷を決定し、隣接セルの負荷に基づいて、そのUEの動作を制御することができる。
【選択図】図4
Description
B(k)=X・A(k) 式(1)
上式で、A(k)は、サブキャリアkに関するPSSまたはSSSのためのシンボルであり、
Xは、過負荷インジケータのためのシンボルであり、
B(k)は、キャリアkに関する変調されたシンボルである。
Y(k)=H1(k)・W1・B(k)+...+HT(k)・WT・B(k)+N(k) 式(3)
上式で、Wtは、物理アンテナtの重み付けであり、ただし、t∈{1,...,T}であり、
Ht(k)は、サブキャリアk上での物理アンテナtのためのチャネル応答であり、
Y(k)は、サブキャリアkに関する受信シンボルであり、
N(k)は、キャリアk上での雑音である。
Heff(k)は、サブキャリアk上での実効チャネルのチャネル利得である。
Xiは、シンボルXのi番目の可能な値であり、
Ciは、Xiの相関結果である。
102a、102b、102c マクロセル
102d ピコセル
102e フェムトセル
110、110x、110y eNB
110a、110b、110c マクロeNB
110d ピコeNB
110e フェムトeNB
110x サービング基地局
120 UE
130 ネットワークコントローラ
200 フレーム構造
310、320 正規サブフレームフォーマット
2312 データソース
2320、2380 送信プロセッサ
2330 送信(TX)多入力多出力(MIMO)プロセッサ
2332 受信機
2332 送信機
2332a 送信機(TMTR)
2332t 送信機(TMTR)
2334、2334a、2334t、2352a、2352r アンテナ
2336、2360 MIMO検出器
2338、2370 受信プロセッサ
2339、2372 データシンク
2340 プロセッサ
2340、2340x、2340y、2390 コントローラ/プロセッサ
2342x、2342y、2392 メモリ
2344 スケジューラ
2354a、2354r 受信機(RCVR)
2354a、2354r 送信機
2378 データソース
2382 TX MIMOプロセッサ
2394 チャネルプロセッサ
Claims (11)
- セルについての過負荷インジケータを決定するステップと、
低再利用チャネルまたはブロードキャストチャネル上で前記セルについての過負荷インジケータを隣接セル内のユーザ装置(UE)に送信するステップと、
を有するワイヤレス通信の方法。 - 前記低再利用チャネルは、1よりも大きい再利用係数を用いて送信される低再利用プリアンブルを含む請求項1に記載の方法。
- 前記低再利用チャネルのための予約されたリソースを決定するステップをさらに有し、前記低再利用チャネルのための予約されたリソースは、データおよび制御情報の送信のために使用されていないガードサブキャリアを占有する請求項1に記載の方法。
- 前記低再利用チャネルのための予約されたリソースを決定するステップと、
前記低再利用チャネルを送信するために前記予約されたリソースの一部をランダムに選択するステップと、
をさらに有し、
前記低再利用チャネルは前記選択されたリソース上で送信される請求項1に記載の方法。 - 少なくとも1つの隣接セルについての少なくとも1つの過負荷インジケータを得るステップと、
前記ブロードキャストチャネル上で前記少なくとも1つの隣接セルについての少なくとも1つの過負荷インジケータを送信するステップと、
をさらに有する請求項1に記載の方法。 - セルについての過負荷インジケータを決定する手段と、
低再利用チャネルまたはブロードキャストチャネル上で前記セルについての過負荷インジケータを隣接セル内のユーザ装置(UE)に送信する手段と、
を備えるワイヤレス通信のための装置。 - 前記低再利用チャネルのための予約されたリソースを決定する手段をさらに備え、前記低再利用チャネルのための予約されたリソースは、データおよび制御情報の送信のために使用されていないガードサブキャリアを占有する請求項6に記載の装置。
- 前記低再利用チャネルのための予約されたリソースを決定する手段と、
前記低再利用チャネルを送信するために前記予約されたリソースの一部をランダムに選択する手段と、
をさらに備え、
前記低再利用チャネルは前記選択されたリソース上で送信される請求項6に記載の装置。 - ユーザ装置(UE)において隣接セルから低再利用チャネルまたはブロードキャストチャネルを受信するステップと、
前記低再利用チャネルまたは前記ブロードキャストチャネルを処理して前記隣接セルについての過負荷インジケータを取り出すステップと、
を有するワイヤレス通信の方法。 - ユーザ装置(UE)において隣接セルから低再利用チャネルまたはブロードキャストチャネルを受信する手段と、
前記低再利用チャネルまたは前記ブロードキャストチャネルを処理して前記隣接セルについての過負荷インジケータを取り出す手段と、
を備えるワイヤレス通信のための装置。 - 請求項1から5または9のいずれか一項に記載の方法を少なくとも1つのコンピュータに実行させるためのコードを含むコンピュータプログラム。
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US14542809P | 2009-01-16 | 2009-01-16 | |
US61/145,428 | 2009-01-16 | ||
US15960709P | 2009-03-12 | 2009-03-12 | |
US61/159,607 | 2009-03-12 | ||
US12/686,260 US8982750B2 (en) | 2009-01-16 | 2010-01-12 | Method and apparatus for transmitting overload indicator over the air |
US12/686,260 | 2010-01-12 |
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JP2013140495A Expired - Fee Related JP5714657B2 (ja) | 2009-01-16 | 2013-07-04 | 過負荷インジケータを無線で送信する方法および装置 |
JP2013140493A Active JP5749297B2 (ja) | 2009-01-16 | 2013-07-04 | 過負荷インジケータを無線で送信する方法および装置 |
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EP (5) | EP2658157B1 (ja) |
JP (4) | JP5650663B2 (ja) |
KR (1) | KR101301785B1 (ja) |
CN (4) | CN103560859B (ja) |
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JP2008533923A (ja) * | 2005-03-15 | 2008-08-21 | クゥアルコム・インコーポレイテッド | 無線通信システムにおける干渉制御 |
JP2009506654A (ja) * | 2005-08-22 | 2009-02-12 | クゥアルコム・インコーポレイテッド | Ofdmaシステムの逆方向リンク電力制御 |
WO2008055132A2 (en) * | 2006-10-31 | 2008-05-08 | Qualcomm Incorporated | Inter-cell power control in the presence of fractional frequency reuse |
JP2010508779A (ja) * | 2006-10-31 | 2010-03-18 | クゥアルコム・インコーポレイテッド | 部分周波数再利用の存在におけるセル間出力制御 |
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