JP6034271B2 - 無線lanにおけるパケットスケジューリング - Google Patents
無線lanにおけるパケットスケジューリング Download PDFInfo
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- JP6034271B2 JP6034271B2 JP2013193226A JP2013193226A JP6034271B2 JP 6034271 B2 JP6034271 B2 JP 6034271B2 JP 2013193226 A JP2013193226 A JP 2013193226A JP 2013193226 A JP2013193226 A JP 2013193226A JP 6034271 B2 JP6034271 B2 JP 6034271B2
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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
- H04L47/2416—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
- 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
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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
- H04L47/56—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
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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
- H04L47/625—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
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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
- H04L47/78—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
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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
- H04L47/808—User-type aware
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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
- H04L47/82—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
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- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
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 (2)
- 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、そのデータ待ち行列の大きさ、およびそのデータ待ち行列についてのデータ伝送間の時間から得られ、前記データ伝送間の前記時間は、時と共に変化する、回路と
を備え、
前記第2の値は、データ転送速度に関連付けられ、前記回路は、前記データ待ち行列に関連付けられるプライオリティおよび前記得られた第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。 - 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、そのデータ待ち行列の大きさ、およびそのデータ待ち行列についてのデータ伝送間の時間から得られ、前記データ伝送間の前記時間は、時と共に変化し、前記第2の値は、データ転送速度に関連付けられる、ことと、
前記無線デバイスによって、前記データ待ち行列に関連付けられるプライオリティおよび前記得られた第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)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012000645A Division 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 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014207481A Division 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 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2014039291A JP2014039291A (ja) | 2014-02-27 |
JP6034271B2 true JP6034271B2 (ja) | 2016-11-30 |
JP6034271B6 JP6034271B6 (ja) | 2017-09-13 |
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