JP5250828B2 - 1000base−tおよび10gbase−tのための長距離イーサネット(登録商標) - Google Patents
1000base−tおよび10gbase−tのための長距離イーサネット(登録商標) Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/4013—Management of data rate on the bus
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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
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/407—Bus networks with decentralised control
- H04L12/413—Bus networks with decentralised control with random access, e.g. carrier-sense multiple-access with collision detection [CSMA-CD]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/22—Traffic shaping
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
- H04L49/3054—Auto-negotiation, e.g. access control between switch gigabit interface connector [GBIC] and link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/35—Switches specially adapted for specific applications
- H04L49/351—Switches specially adapted for specific applications for local area network [LAN], e.g. Ethernet switches
- H04L49/352—Gigabit ethernet switching [GBPS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/90—Buffering arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/90—Buffering arrangements
- H04L49/9063—Intermediate storage in different physical parts of a node or terminal
- H04L49/9078—Intermediate storage in different physical parts of a node or terminal using an external memory or storage device
-
- 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
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1438—Negotiation of transmission parameters prior to communication
- H04L5/1446—Negotiation of transmission parameters prior to communication of transmission speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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- Time-Division Multiplex Systems (AREA)
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Description
本願は、2008年12月9日出願の米国特許出願第12/330,823号、および2007年12月11日出願の米国暫定特許出願第61/012,810号に対する権利を主張するものであり、その開示は、全体として参照することにより本明細書に組み込まれる。
[項目1]
データ速度の約数Nを選択するステップであって、Nは、正の整数と、1以上の実数と、のうちの少なくとも1つである、ステップと、
M/N Gbpsのデータ速度で、第1の信号を伝送するステップと、
上記M/N Gbpsのデータ速度で、第2の信号を受信するステップと、を含み、
上記第1および第2の信号は、
M=1である、1000BASE−Tと、
M=10である、10GBASE−Tと、のうちの少なくとも1つに準拠する、方法。
[項目2]
上記第1の信号および上記第2の信号を輸送するケーブルの1つ以上の特性を計測するステップと、
上記ケーブルの上記1つ以上の特性に基づいて、上記データ速度の約数Nを選択するステップと、をさらに含む、項目1に記載の方法。
[項目3]
上記ケーブルの上記1つ以上の特性は、
上記ケーブルの長さと、
上記ケーブルの信号伝送品質と、のうちの少なくとも1つを含む、項2に記載の方法。
[項目4]
参照クロック速度に基づいて、ローカルクロック速度を生成するステップであって、上記ローカルクロック速度に対する、上記参照クロック速度の比率はNである、ステップをさらに含み、
上記第1の信号は、上記ローカルクロック速度に従って伝送され、上記第2の信号は、上記ローカルクロック速度に従って受信される、項目1に記載の方法。
[項目5]
125Mbaudの記号速度で、パルス振幅変調−5記号(PAM−5記号)を生成するステップと、
上記PAM−5記号のそれぞれに対して、N個の連続する記号期間、PAM−5ライン信号を発生させるステップと、をさらに含む、項目1に記載の方法。
[項目6]
それぞれの発生したPAM−5ライン信号のレベルは、対応するPAM−5記号を表す、項目5に記載の方法。
[項7]
それぞれの発生したPAM−5ライン信号のレベルは、上記PAM−5記号の連続する記号の間の補間を表す、項目5に記載の方法。
[項目8]
上記第2の信号に基づいて、パルス振幅変調−5ライン信号(PAM−5ライン信号)を生成するステップと、
上記PAM−5ライン信号のそれぞれの、各N個の連続記号期間、1つのPAM−5記号を生成するステップと、をさらに含む、項目1に記載の方法。
[項目9]
先入れ先出しバッファ(FIFO)に上記第1の信号によって表されるデータを格納するステップと、
上記FIFOに格納された上記データの量が、規定の閾値を上回る場合に、休止信号を伝送するステップと、をさらに含む、項目1に記載の方法。
Claims (16)
- 物理層デバイス(PHY)であって、
データ速度の約数Nを選択するためのデータ速度モジュールであって、Nは、1より大きい正の整数と、1より大きい実数と、のうちの少なくとも1つである、データ速度モジュールと、
PHYコアであって、
M/N Gbpsのデータ速度で、第1の信号を伝送するための、PHY伝送モジュールと、
M/N Gbpsのデータ速度で、第2の信号を受信するための、PHY受信モジュールと、を含み、
前記第1および第2の信号は、
M=1の場合、1000BASE−Tに準拠し、
M=10の場合、10GBASE−Tに準拠する、PHYコアと、を含む、物理層デバイス。 - 前記第1の信号および前記第2の信号を輸送するケーブルの1つ以上の特性を計測するための、ケーブル計測モジュールと、をさらに含み、
前記データ速度モジュールは、前記ケーブルの前記1つ以上の特性に基づいて、前記データ速度の約数Nを選択する、請求項1に記載の物理層デバイス。 - 前記ケーブルの前記1つ以上の特性は、
前記ケーブルの長さと、
前記ケーブルの信号伝送品質と、のうちの少なくとも1つを含む、請求項2に記載の物理層デバイス。 - 参照クロック速度に基づいて、ローカルクロック速度を発生させるためのクロック低下回路をさらに含み、
前記ローカルクロック速度に対する前記参照クロック速度の比率はNであり、
前記PHYコアは、前記ローカルクロック速度に従って動作する、請求項1から請求項3のいずれか1つに記載の物理層デバイス。 - 125Mbaudの記号速度で、パルス振幅変調−5記号(PAM−5記号)を発生させるための、物理符号化副層(PCS)伝送モジュールと、
前記PAM−5記号のそれぞれに対して、N個の連続する記号期間、PAM−5ライン信号を発生させるための記号伝送モジュールと、をさらに含む、請求項1から請求項4のいずれか1つに記載の物理層デバイス。 - それぞれの発生したPAM−5ライン信号のレベルは、対応するPAM−5記号を表す、請求項5に記載の物理層デバイス。
- それぞれの発生したPAM−5ライン信号のレベルは、前記PAM−5記号の連続する記号の間の補間を表す、請求項5に記載の物理層デバイス。
- 前記第2の信号に基づいて、パルス振幅変調−5ライン信号(PAM−5ライン信号)を発生させるための、ケーブル受信モジュールと、
前記PAM−5ライン信号のそれぞれの、各N個の連続する記号期間、1つのPAM−5記号を発生させるための、記号受信モジュールと、をさらに含む、請求項1から請求項7のいずれか1つに記載の物理層デバイス。 - 第1のデータに基づいて5レベルのパルス振幅変調記号を生成する物理符号化副層伝送モジュールと、
(i)前記5レベルのパルス振幅変調記号および(ii)前記データ速度の約数Nに基づいて5レベルのパルス振幅変調ライン信号を生成するパルス信号伝送モジュールとをさらに備え、
前記PHY伝送モジュールは、M/N Gbpsのデータ速度でケーブルを介して前記5レベルのパルス振幅変調ライン信号を表す前記第1の信号を伝送し、
前記PHY受信モジュールは、前記M/N Gbpsのデータ速度でケーブルを介して前記第2の信号を受信する請求項1に記載の物理層デバイス。 - 参照クロック速度に基づいてローカルクロック速度を生成するクロック低下回路と、
125Mbaudの記号速度で5レベルのパルス振幅変調信号を生成する物理符号化副層伝送モジュールと、
前記5レベルのパルス振幅変調信号のそれぞれのためのN個の連続する記号期間に対する5レベルのパルス振幅変調ライン信号を生成する記号伝送モジュールと
をさらに備え、
前記ローカルクロック速度に対する前記参照クロック速度の比率は、Nであり、
前記PHYコアは、前記ローカルクロック速度に従って動作する請求項1に記載の物理層デバイス。 - 前記PHYコアは、
第1のデータに基づいて5レベルのパルス振幅変調信号を生成する物理符号化副層伝送モジュールと、
(i)5レベルのパルス振幅変調信号および(ii)前記データ速度の約数Nに基づいて前記5レベルのパルス振幅変調ライン信号を生成する記号伝送モジュールとを有し、
前記第1の信号は、生成された前記5レベルのパルス振幅変調ライン信号を表し、
前記第1および第2の信号は、
前記M/N Gbpsのデータ速度が1000Mbpsより小さい場合、1000BASE−Tに準拠し、
前記M/N Gbpsのデータ速度が1000Mbps以上で10Gbpsより小さい場合、10GBASE−Tに準拠する請求項1に記載の物理層デバイス。 - 前記第1および第2の信号は、
M=1の場合、1000BASE−Tの特性を有し、
M=10の場合、10GBASE−Tの特性を有し、
前記特性は、物理符号化副層、誤り訂正方式、および信号伝達方式の態様を含む請求項1に記載の物理層デバイス。 - ネットワークインターフェースモジュールであって、
請求項1に記載の物理層デバイスと、
第1のデータを前記PHYへ提供し、前記PHYから第2のデータを受信するための、メディアアクセスコントローラと、を含む、ネットワークインターフェースモジュール。 - 前記メディアアクセスコントローラから受信した前記第1のデータを格納するための、先入れ先出しバッファ(FIFO)と、
前記FIFOに格納される前記第1のデータの量が、規定の閾値を上回る場合に、休止信号を、前記メディアアクセスコントローラに伝送するための、フロー制御回路と、をさらに含む、請求項13に記載のネットワークインターフェースモジュール。 - 請求項13または請求項14に記載のネットワークインターフェースモジュールを含む、ネットワークデバイス。
- 前記ネットワークデバイスは、
ネットワークスイッチ、
ルータ、および
ネットワークインターフェースコントローラから成る群より選択される、請求項15に記載のネットワークデバイス。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1281007P | 2007-12-11 | 2007-12-11 | |
US61/012,810 | 2007-12-11 | ||
US12/330,823 US8243752B2 (en) | 2007-04-04 | 2008-12-09 | Long-reach ethernet for 1000BASE-T and 10GBASE-T |
US12/330,823 | 2008-12-09 | ||
PCT/US2008/086405 WO2009076522A2 (en) | 2007-12-11 | 2008-12-11 | Long-reach ethernet for 1000base-t and 10gbase-t |
Publications (3)
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JP2011507407A JP2011507407A (ja) | 2011-03-03 |
JP2011507407A5 JP2011507407A5 (ja) | 2012-02-16 |
JP5250828B2 true JP5250828B2 (ja) | 2013-07-31 |
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US (2) | US8243752B2 (ja) |
EP (1) | EP2223457B1 (ja) |
JP (1) | JP5250828B2 (ja) |
CN (1) | CN101897145B (ja) |
BR (1) | BRPI0821511B1 (ja) |
TW (1) | TWI462527B (ja) |
WO (1) | WO2009076522A2 (ja) |
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CN101897145A (zh) | 2010-11-24 |
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US20090080459A1 (en) | 2009-03-26 |
US8243752B2 (en) | 2012-08-14 |
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