WO2013120318A1 - Procédé et système pour obtenir un ordonnancement de sous-trames en liaison montante pendant de regroupement de sous-trames - Google Patents

Procédé et système pour obtenir un ordonnancement de sous-trames en liaison montante pendant de regroupement de sous-trames Download PDF

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Publication number
WO2013120318A1
WO2013120318A1 PCT/CN2012/074008 CN2012074008W WO2013120318A1 WO 2013120318 A1 WO2013120318 A1 WO 2013120318A1 CN 2012074008 W CN2012074008 W CN 2012074008W WO 2013120318 A1 WO2013120318 A1 WO 2013120318A1
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WO
WIPO (PCT)
Prior art keywords
uplink
terminal
scheduling
uplink subframe
enabled
Prior art date
Application number
PCT/CN2012/074008
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English (en)
Chinese (zh)
Inventor
熊科
Original Assignee
中兴通讯股份有限公司
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.)
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2013120318A1 publication Critical patent/WO2013120318A1/fr

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Classifications

    • 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
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and system for implementing uplink subframe scheduling when a subframe is bundled. Background technique
  • the current universal terrestrial wireless communication network uses a honeycomb structure. Only one base station is deployed in a single cell. This is a typical star network where the channel quality of users at the edge of a star network can be degraded by various disturbances.
  • LTE Long Term Evolution
  • the uplink subframe bundling technique is to transmit the same data in four consecutive uplink TTIs (Transmission Time Intervals) in the same HARQ process. This method can be applied to scenarios where the terminal is at the edge of the cell or other scenarios where the transmission delay is relatively high.
  • the transmission timing corresponding to the first TTI in the subframe bundle has the authorization signaling to be sent on the PDCCH (hysical downlink control channel), and only the fourth bundle of the subframe is bundled ( That is, the last one) ACK/NACK (Acknowledgment/Negative-Acknowledgment, acknowledgment/rejection) is fed back through the PHICH (Physical Hybrid ARQ Indicator Channel).
  • PDCCH physical downlink control channel
  • LTE is divided into TDD (Time Division Duplex) mode and FDD (Frequency Division Duplex) mode.
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • the RTT (Round-Trip Time) of the HARQ is increased by 2 times.
  • the number of HARQ processes supported by the terminal is reduced to the original. Half.
  • the LTE protocol clearly states that TDD can only perform uplink subframe bundling when the uplink and downlink time slot ratios are 0, 1, and 6.
  • TDD uplink and downlink time slot ratio is 0, the number of HARQ processes running in parallel on the terminal side is up to seven.
  • the terminal is configured as a subframe bundle, the number of HARQ processes running in parallel on the terminal side needs to be reduced to three. Therefore, it is necessary to calculate the transmission time of the PUSCH (Physical Uplink Shared Channel) packet according to the following rules:
  • a main object of the present invention is to provide a method and system for implementing uplink subframe scheduling when subframes are bundled, so as to reduce the overhead required for calculating uplink subframe scheduling timing when subframes are bundled.
  • a method for implementing uplink subframe scheduling when a subframe is bundled includes:
  • the uplink time slot scheduling is performed for the terminal according to the uplink/downlink slot ratio relationship.
  • the method further includes: confirming, by the medium access control MAC layer, an uplink subframe bundling function for the terminal.
  • the process of the MAC layer initiating the confirmation includes:
  • the MAC layer determines whether the uplink subframe bundling function of the terminal can be enabled according to the uplink channel quality of the terminal, and notifies the radio resource control RRC layer of the judgment result; the RRC layer finally determines whether the uplink subframe bundling function is enabled, and will eventually The decision result informs the MAC layer.
  • the RRC layer also notifies the terminal of the final decision result:
  • the RRC layer sends an RRC reconfiguration message to notify the terminal whether the uplink subframe bundling function is enabled.
  • the method for performing the scheduling according to the uplink-downlink slot ratio relationship is:
  • the sub-frame bundling special scheduling mode is entered, and the control scheduler performs an uplink time slot scheduling for the terminal according to the algorithm parameters configured in the background, and the current communication mode and the uplink-downlink slot ratio relationship, and the fixed number of subframes per interval.
  • a system for implementing uplink subframe scheduling when a subframe is bundled including a scheduling unit, is configured to: when an uplink subframe bundling function is enabled for a terminal, according to an uplink/downlink slot ratio relationship, the number of fixed subframes per interval is The terminal performs an uplink time slot scheduling.
  • the scheduling unit is further configured to: initiate an uplink subframe bundling function for the terminal, Recognize.
  • system further comprises a secondary decision unit
  • the method is configured to: determine, according to the uplink channel quality of the terminal, whether the uplink subframe bundling function of the terminal is enabled, and notify the second-level decision unit of the determination result; The decision unit finally decides whether the uplink subframe bundling function is enabled, and notifies the scheduling unit of the final decision result.
  • the secondary decision unit is further configured to notify the terminal of the final decision result: the secondary decision unit sends a reconfiguration message to notify the terminal whether the uplink subframe bundling function is enabled.
  • the secondary decision unit is an RRC layer.
  • the scheduling unit performs the scheduling according to the uplink-downlink slot ratio relationship, and is configured to: enter a subframe bundling special scheduling mode, and control the scheduler according to algorithm parameters configured by the background, and current communication mode and uplink and downlink
  • the gap ratio relationship, the number of subframes fixed every interval is an uplink time slot scheduling for the terminal.
  • the scheduling unit is a MAC layer.
  • FIG. 1 is a flowchart of implementing uplink subframe scheduling when a subframe is bundled according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of implementing uplink subframe scheduling when a subframe is bundled according to an embodiment of the present invention.
  • the present invention proposes to implement uplink when a seed frame is bundled.
  • Subframe scheduling technique In general, through a large number of simulation experiments, it is found that in the uplink subframe bundling mode, the period in which the base station sends an uplink scheduling instruction to the same terminal follows a certain rule. Therefore, according to the TDD uplink and downlink slot ratio relationship, the functional entity such as the MAC layer determines whether the terminal can transmit data on the PUSCH according to the currently scheduled subframe number.
  • the MAC layer determines whether the uplink subframe bundling function of the terminal can be enabled according to the uplink channel quality of the terminal. The judgment result is notified to the RRC (Radio Resource Control) layer.
  • RRC Radio Resource Control
  • the RRC layer After receiving the subframe bundling judgment result sent by the MAC layer, the RRC layer performs a decision according to the algorithm to determine whether the uplink subframe bundling function is enabled, and notifies the PHY (physical) layer, the MAC layer, and the terminal of the final decision result. .
  • the method for notifying the terminal may be to send an RRC reconfiguration message to notify the terminal whether the uplink subframe bundling function is enabled.
  • the RRC layer may be referred to as a secondary decision unit.
  • the MAC layer enters the subframe bundling special scheduling mode, and the control scheduler is fixed according to the algorithm parameters configured by the background, and the current communication mode and the uplink-downlink slot ratio relationship.
  • the number of subframes is an uplink time slot scheduling for the terminal.
  • the communication mode is set to TDD and the uplink and downlink time slot ratio is 0.
  • the corresponding algorithm parameters are configured to indicate the scheduling period of the PUSCH when the uplink subframe bundling function is enabled in the current cell configuration.
  • the MAC layer determines whether the uplink subframe bundling function is enabled according to the uplink channel quality of the terminal, and finally determines the uplink subframe bundling function of the enabled terminal, and notifies the RRC layer of the situation, for example, sending an uplink subframe bundling function enable message. .
  • the RRC layer After receiving the uplink subframe bundling function enable message sent by the MAC layer, the RRC layer enables the uplink subframe bundling function according to the algorithm decision, and notifies the PHY layer, the MAC layer, and the terminal of the decision result, and the method for notifying the terminal
  • the RRC reconfiguration message may be sent to notify the terminal whether the uplink subframe bundling function is enabled.
  • the MAC layer determines whether the subframe binding enable flag is included in the decision result sent by the RRC layer, and includes confirming that the uplink subframe bundling function is enabled and performing step 5, otherwise confirming that the uplink subframe bundling function is not enabled and executing Step 6.
  • the HARQ process can be immediately allocated, and the RB (Resource Block) and PHICH resources are allocated; otherwise, according to the periodic scheduling, the scheduling period is based on the previous The algorithm parameters configured in the background, in ⁇ . End the process.
  • the operation of implementing the uplink subframe scheduling in the subframe bundling of the present invention may represent the process shown in FIG. 2, and the process includes the following steps:
  • Step 210 The MAC layer initiates confirmation of the uplink subframe bundling function of the terminal.
  • the confirmation can also be initiated by other functional entities.
  • Step 220 When the uplink subframe bundling function is enabled, the MAC layer performs an uplink time slot scheduling for the terminal according to the uplink-downlink slot ratio relationship, and the number of fixed subframes is fixed.
  • the scheduling may also be performed by other functional entities, and the functional entities performing the scheduling may be collectively referred to as a scheduling unit.
  • the method for implementing the uplink subframe scheduling in the subframe binding of the present invention is applicable to the uplink subframe binding application, and the uplink subframe is scheduled in a fixed cycle, thereby effectively reducing the terminal.
  • the scheduling period can be dynamically configured by the background, which improves the flexibility of the implementation of the subframe bundling function.

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

Abstract

L'invention concerne un procédé et un système pour obtenir un ordonnancement de sous-trames en liaison montante pendant le regroupement de sous-trames. Le procédé comprend les étapes consistant à : lorsqu'une fonction de regroupement de sous-trames en liaison montante pour un terminal est activée, selon la relation de distribution proportionnelle entre un créneau de temps en liaison montante et un créneau de temps en liaison descendante, effectuer l'ordonnancement des créneaux de temps en liaison montante une fois sur le terminal à chaque nombre fixe de sous-trames. En visant une application de regroupement de sous-trames en liaison montante, la technologie permettant d'obtenir un ordonnancement de sous-trames en liaison montante pendant le regroupement de sous-trames de la présente invention réduit efficacement la surcharge système nécessaire lors de l'exécution d'un ordonnancement en liaison montante sur le terminal par l'ordonnancement de la sous-trame en liaison montante dans un cycle fixe. En outre, le cycle d'ordonnancement peut être dynamiquement configuré dans l'arrière-plan, ce qui permet d'augmenter la flexibilité pour effectuer une fonction de regroupement de sous-trames.
PCT/CN2012/074008 2012-02-17 2012-04-13 Procédé et système pour obtenir un ordonnancement de sous-trames en liaison montante pendant de regroupement de sous-trames WO2013120318A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210036664.4A CN102595609B (zh) 2012-02-17 2012-02-17 一种子帧捆绑时实现上行子帧调度的方法和系统
CN201210036664.4 2012-02-17

Publications (1)

Publication Number Publication Date
WO2013120318A1 true WO2013120318A1 (fr) 2013-08-22

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Publication number Priority date Publication date Assignee Title
CN105409317A (zh) * 2013-08-06 2016-03-16 联发科技股份有限公司 自适应tdd系统中drx以及harq运作
WO2015017978A1 (fr) * 2013-08-06 2015-02-12 Mediatek Inc. Opérations drx dans des systèmes tdd adaptatifs
WO2015042893A1 (fr) 2013-09-27 2015-04-02 华为技术有限公司 Procédé, équipement utilisateur et station de base permettant de transmettre des données de liaison montante
CN105323857A (zh) * 2015-11-12 2016-02-10 深圳市金立通信设备有限公司 一种harq信息配置的方法及相关设备
CN105491673B (zh) * 2015-12-15 2019-06-11 福建星网锐捷网络有限公司 Td-lte配比0上行调度的方法及基站

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CN101567775A (zh) * 2008-04-25 2009-10-28 大唐移动通信设备有限公司 传输上行数据的方法、发送端设备和接收端设备
CN101621849A (zh) * 2008-06-30 2010-01-06 中兴通讯股份有限公司 一种下行数据接收状态的反馈方法
CN102223217A (zh) * 2010-04-19 2011-10-19 鼎桥通信技术有限公司 一种提升tdd cdma系统单用户峰值速率和吞吐量的方法和系统
US20120008580A1 (en) * 2008-06-24 2012-01-12 Dae Won Lee Method For Transmitting Uplink Signals

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101567775A (zh) * 2008-04-25 2009-10-28 大唐移动通信设备有限公司 传输上行数据的方法、发送端设备和接收端设备
US20120008580A1 (en) * 2008-06-24 2012-01-12 Dae Won Lee Method For Transmitting Uplink Signals
CN101621849A (zh) * 2008-06-30 2010-01-06 中兴通讯股份有限公司 一种下行数据接收状态的反馈方法
CN102223217A (zh) * 2010-04-19 2011-10-19 鼎桥通信技术有限公司 一种提升tdd cdma系统单用户峰值速率和吞吐量的方法和系统

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