JP2015029349A - 無線lanにおけるパケットスケジューリング - Google Patents
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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
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2416—Real-time traffic
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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
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
- H04L47/2433—Allocation of priorities to traffic types
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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
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2441—Traffic characterised by specific attributes, e.g. priority or QoS relying on flow classification, e.g. using integrated services [IntServ]
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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
- H04L47/50—Queue scheduling
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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
- H04L47/50—Queue scheduling
- H04L47/52—Queue scheduling by attributing bandwidth to queues
- H04L47/522—Dynamic queue service slot or variable bandwidth allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/56—Queue scheduling implementing delay-aware scheduling
- H04L47/564—Attaching a deadline to packets, e.g. earliest due date first
- H04L47/566—Deadline varies as a function of time spent in the queue
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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
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/6215—Individual queue per QOS, rate or priority
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
- H04L47/6255—Queue scheduling characterised by scheduling criteria for service slots or service orders queue load conditions, e.g. longest queue first
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/78—Architectures of resource allocation
- H04L47/788—Autonomous allocation of resources
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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
- H04L47/70—Admission control; Resource allocation
- H04L47/80—Actions related to the user profile or the type of traffic
- H04L47/805—QOS or priority aware
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/80—Actions related to the user profile or the type of traffic
- H04L47/808—User-type aware
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/82—Miscellaneous aspects
- H04L47/824—Applicable to portable or mobile terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/04—Registration at HLR or HSS [Home Subscriber Server]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- Small-Scale Networks (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
Abstract
Description
1.プライオリティの高いACとの内部衝突による場合
2.無線チャネルを共有する他のSTAとの外部衝突による場合
3.他の送信パケットを指名した後、割り当てられたTXOPの期間内の最終送信後の場合
あるACに1つのトラフィックフローの待ち行列だけが存在する場合、対処すべき他の待ち行列が存在しないため、QoSを基盤とした競合解決機能は効果的ではない。
各待ち行列内で、「プライオリティインデックス(Priority Index)」は、「遅延およびデータ転送速度(Delay and Data Rate)」の基準に基づいて計算される。「データ転送速度インデックス(Data Rate Index)」の計算は、パケットを送信するために使用される瞬間的なデータ転送速度を考慮に入れる。高いデータ転送速度は、送信間隔時間(medium time)が少なくて済み、プライオリティが高い。このことにより、システム全体のスループットは改善するが、ユーザにとっては、瞬間的なデータ転送速度の遅さに伴う遅延を増加させる可能性がある。「遅延インデックス(Delay Index)」の計算は、トラフィックフローごとのQoS要件を反映するため、各待ち行列における最初のパケットの遅延(すなわち、そのパケットが待ち行列において費やした時間)、および待ち行列の大きさを考慮に入れる。同一のAC内で最も高いプライオリティインデックス(「データ転送速度、および遅延」の組み合わせ)を持つパケットは、送信のために他のACと競争することをスケジュール化される。
式(3)
式(4)
Claims (3)
- 無線デバイスであって、
複数のデータ待ち行列と、
前記複数のデータ待ち行列のそれぞれについて第1の値を得るように構成される回路であって、前記第1の値は、第2の値、各データ待ち行列に関連付けられるサイズ、および各データ待ち行列についてのスケジューリング伝送間の遅延から得られ、スケジューリング伝送間の前記遅延は、時と共に変化する、回路と
を備え、
前記第2の値は、データレートに関連付けられ、前記得られた第1の値は、プライオリティに関連付けられ、前記回路は、前記得られた第1の値に基づいて伝送のための前記データ待ち行列の少なくとも一つからデータを選択するようにさらに構成される、
無線デバイス。 - 前記データの選択は、より低いプライオリティデータの伝送リソースの欠乏を防ぐ、請求項1の無線デバイス。
- 無線デバイスによって、複数のデータ待ち行列のそれぞれについて第1の値を得ることであって、前記第1の値は、第2の値、各データ待ち行列に関連付けられるサイズ、および各データ待ち行列についてのスケジューリング伝送間の遅延から得られ、スケジューリング伝送間の前記遅延は、時と共に変化し、前記第2の値は、データレートに関連付けられ、前記得られた第1の値は、プライオリティに関連付けられる、ことと、
前記無線デバイスによって、前記得られた第1の値に基づいて伝送のための前記データ待ち行列の少なくとも一つからデータを選択することと
を備える方法。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US53501604P | 2004-01-08 | 2004-01-08 | |
US60/535,016 | 2004-01-08 | ||
US10/991,266 US20050152373A1 (en) | 2004-01-08 | 2004-11-17 | Packet scheduling in a wireless local area network |
US10/991,266 | 2004-11-17 |
Related Parent Applications (1)
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JP2013193226A Division JP6034271B6 (ja) | 2004-01-08 | 2013-09-18 | 無線lanにおけるパケットスケジューリング |
Related Child Applications (1)
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JP2016026037A Division JP2016116240A (ja) | 2004-01-08 | 2016-02-15 | 無線lanにおけるパケットスケジューリング |
Publications (2)
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JP2015029349A true JP2015029349A (ja) | 2015-02-12 |
JP6420110B2 JP6420110B2 (ja) | 2018-11-07 |
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JP2006549345A Expired - Fee Related JP4512099B2 (ja) | 2004-01-08 | 2005-01-04 | 無線lanにおけるパケットスケジューリング |
JP2009172253A Active JP4995871B2 (ja) | 2004-01-08 | 2009-07-23 | 無線lanにおけるパケットスケジューリング |
JP2012000645A Active JP5524987B2 (ja) | 2004-01-08 | 2012-01-05 | 無線lanにおけるパケットスケジューリング |
JP2014207481A Active JP6420110B2 (ja) | 2004-01-08 | 2014-10-08 | 無線lanにおけるパケットスケジューリング |
JP2016026037A Pending JP2016116240A (ja) | 2004-01-08 | 2016-02-15 | 無線lanにおけるパケットスケジューリング |
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JP2006549345A Expired - Fee Related JP4512099B2 (ja) | 2004-01-08 | 2005-01-04 | 無線lanにおけるパケットスケジューリング |
JP2009172253A Active JP4995871B2 (ja) | 2004-01-08 | 2009-07-23 | 無線lanにおけるパケットスケジューリング |
JP2012000645A Active JP5524987B2 (ja) | 2004-01-08 | 2012-01-05 | 無線lanにおけるパケットスケジューリング |
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JP2016026037A Pending JP2016116240A (ja) | 2004-01-08 | 2016-02-15 | 無線lanにおけるパケットスケジューリング |
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US (2) | US20050152373A1 (ja) |
EP (1) | EP1702430A4 (ja) |
JP (5) | JP4512099B2 (ja) |
KR (4) | KR100633354B1 (ja) |
AR (1) | AR047377A1 (ja) |
CA (1) | CA2552398A1 (ja) |
DE (1) | DE202005000286U1 (ja) |
NO (1) | NO20063529L (ja) |
TW (5) | TWI269566B (ja) |
WO (1) | WO2005069876A2 (ja) |
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