WO2011013768A1 - Terminal sans fil et procédé de prédiction de la vitesse de transmission - Google Patents

Terminal sans fil et procédé de prédiction de la vitesse de transmission Download PDF

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Publication number
WO2011013768A1
WO2011013768A1 PCT/JP2010/062837 JP2010062837W WO2011013768A1 WO 2011013768 A1 WO2011013768 A1 WO 2011013768A1 JP 2010062837 W JP2010062837 W JP 2010062837W WO 2011013768 A1 WO2011013768 A1 WO 2011013768A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission rate
predicted
unit
wireless terminal
reception quality
Prior art date
Application number
PCT/JP2010/062837
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English (en)
Japanese (ja)
Inventor
知好 横田
方偉 童
篤 山本
Original Assignee
京セラ株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 京セラ株式会社 filed Critical 京セラ株式会社
Publication of WO2011013768A1 publication Critical patent/WO2011013768A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • the radio terminal can accurately calculate the predicted transmission rate.
  • a sixth feature of the present invention relates to the fourth feature of the present invention, wherein the storage unit stores a correspondence (average transmission rate table T2) between the index value and the average transmission rate for each reception quality.
  • the calculation unit obtains, from the storage unit, the average transmission rate corresponding to the index value according to the predicted reception quality from the association according to the reception quality of the received radio signal.
  • the gist is to calculate the predicted transmission rate using the acquired average transmission rate as the reference transmission rate.
  • FIG. 2 is a diagram showing an example of a proportional fairness type scheduling process.
  • the radio terminal 4 with good reception quality and a large amount of data to be received from the radio base station 20 has entered the communication area of the radio base station 20, and therefore Downlink slots 8 are continuously assigned to the wireless terminals 4. After downlink slot 8, downlink slots are alternately assigned to wireless terminals 1 to 4 every 4 slots.
  • the DRC storage unit 151 stores a DRC table in which reception quality (SINR or CIR) and DRC are associated with each other.
  • reception quality SINR or CIR
  • DRC table one DRC is associated with a predetermined range of reception quality.
  • FIG. 7 is a flowchart showing the processing flow of the allocation rate calculation process.
  • the defined transmission rate is used as the reference transmission rate, but in the second embodiment, the average transmission rate based on the actually measured value of the downlink transmission rate is used as the reference transmission rate.
  • FIG. 12 is a flowchart showing a processing flow of predicted transmission rate calculation processing according to the third embodiment.
  • step S304 the predicted transmission rate calculation unit 142b acquires the average value (or maximum value) of the allocation rate from the allocation rate storage unit 153.
  • the allocation rate calculation unit 142a downloads assigned to the radio terminal 1D in all downlink communication channels (T ⁇ F) that can be assigned by the radio base station 20 within one frame (predetermined period). An allocation rate indicating a ratio occupied by the communication channel (T1 ⁇ F1) is calculated.
  • a downlink communication channel is configured by a combination of a frequency (subchannel) and a time slot, and the downlink communication channel is called a resource block (RB) in LTE.
  • the allocation rate calculation unit 142a stores the average value (or maximum value) of the allocation rate in the allocation rate storage unit 153.
  • step S422 the wireless communication information acquisition unit 112 acquires wireless communication information.
  • the predicted transmission rate calculation unit 113 uses the wireless communication information acquired by the wireless communication information acquisition unit 112 to calculate the predicted transmission rate by the predicted transmission rate calculation processing according to the first to third embodiments.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte à un terminal sans fil (1A) qui est utilisé pour un système de communication sans fil, le système de modulation d'un signal sans fil étant commuté de façon dynamique selon la qualité de réception du signal sans fil reçu d'une station de base sans fil. Ledit terminal sans fil (1A) prédit une qualité de réception à un temps futur après le moment de réception du signal sans fil et calcule une vitesse de transmission prédictive qui est la valeur prédictive d'une vitesse de transmission en liaison descendante au temps futur sur la base de la qualité de réception prédite. Le terminal sans fil (1) est pourvu d'une unité de calcul (142) qui calcule la vitesse de transmission prédictive à l'aide : d'une vitesse de transmission de référence qui est la vitesse de transmission en liaison descendante déterminée selon la qualité de réception prédite ; et un taux d'allocation qui représente le canal de communication de liaison descendante alloué au terminal sans fil pendant une période prédéterminée avant le moment de réception à tous les canaux de communication de liaison descendante qui peuvent être alloués par la station de base sans fil pendant la période prédéterminée.
PCT/JP2010/062837 2009-07-29 2010-07-29 Terminal sans fil et procédé de prédiction de la vitesse de transmission WO2011013768A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2009-177110 2009-07-29
JP2009177110 2009-07-29
JP2010-156615 2010-07-09
JP2010156615A JP2011050042A (ja) 2009-07-29 2010-07-09 無線端末及び伝送速度予測方法

Publications (1)

Publication Number Publication Date
WO2011013768A1 true WO2011013768A1 (fr) 2011-02-03

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PCT/JP2010/062837 WO2011013768A1 (fr) 2009-07-29 2010-07-29 Terminal sans fil et procédé de prédiction de la vitesse de transmission

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JP (1) JP2011050042A (fr)
WO (1) WO2011013768A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113780398A (zh) * 2021-09-02 2021-12-10 科大国创云网科技有限公司 一种无线网络链路质量预测方法及系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5695506B2 (ja) * 2011-06-03 2015-04-08 日本放送協会 データ伝送装置
JP5748615B2 (ja) * 2011-08-29 2015-07-15 京セラ株式会社 通信装置
GB2495712B (en) 2011-10-17 2014-01-08 Skype Controlling transmission of data
WO2016042686A1 (fr) * 2014-09-19 2016-03-24 日本電気株式会社 Dispositif et procédé de commande de transmission de données

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004253832A (ja) * 2003-02-17 2004-09-09 Kyocera Corp 無線装置
JP2004297127A (ja) * 2003-03-25 2004-10-21 Kyocera Corp 携帯端末及びサーバ
JP2006148490A (ja) * 2004-11-18 2006-06-08 Matsushita Electric Ind Co Ltd 高速パケット伝送システムにおけるｄｒｃ信号送信方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004253832A (ja) * 2003-02-17 2004-09-09 Kyocera Corp 無線装置
JP2004297127A (ja) * 2003-03-25 2004-10-21 Kyocera Corp 携帯端末及びサーバ
JP2006148490A (ja) * 2004-11-18 2006-06-08 Matsushita Electric Ind Co Ltd 高速パケット伝送システムにおけるｄｒｃ信号送信方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113780398A (zh) * 2021-09-02 2021-12-10 科大国创云网科技有限公司 一种无线网络链路质量预测方法及系统

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