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WO2009138033A1 - Procédé, dispositif et système d'ajustement des instants de demande de répétition automatique hybride - Google Patents

Procédé, dispositif et système d'ajustement des instants de demande de répétition automatique hybride Download PDF

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Publication number
WO2009138033A1
WO2009138033A1 PCT/CN2009/071771 CN2009071771W WO2009138033A1 WO 2009138033 A1 WO2009138033 A1 WO 2009138033A1 CN 2009071771 W CN2009071771 W CN 2009071771W WO 2009138033 A1 WO2009138033 A1 WO 2009138033A1
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WO
WIPO (PCT)
Prior art keywords
cell
uplink
hybrid automatic
network resource
power load
Prior art date
Application number
PCT/CN2009/071771
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English (en)
Chinese (zh)
Inventor
戴丁樟
郭房富
姚瑶
张岩强
胡圣武
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华为技术有限公司
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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Publication of WO2009138033A1 publication Critical patent/WO2009138033A1/fr

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Classifications

    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]

Definitions

  • the present invention relates to the field of communication applications, and in particular, to a method, device and system for adjusting the number of hybrid automatic retransmissions.
  • High Speed Uplink Packet Access is a wireless side uplink enhancement technology introduced in the R6 version of the 3rd Generation Partnership Project (3GPP) protocol system.
  • HSUPA adopts key technologies such as multi-code transmission, Hybrid Automatic Repeat ReQuest (HQQ) and fast scheduling based on base station (NodeB), so that the maximum uplink data throughput rate of single cell reaches 5.76 Mbit/s, which greatly enhances the broadband.
  • E-DPDCH Enhanced-Dedicated Physical Data Channel
  • E-DPCCH Enhanced-Dedicated Physical Control Channel
  • E-AGCH Enhanced Absolute Grant Channel
  • E-RGCH Enhanced-Relative Grant Channel
  • E-HICH Enhanced-Hybrid ARQ Indicator Channel
  • MAC-e and MAC-es two new Medium Access Control entities, MAC-e and MAC-es, and move the packet scheduling function from the Radio Network Controller (RNC) to NodeB implements fast packet scheduling based on NodeB, and through key technologies such as hybrid automatic retransmission, 2ms wireless short frame and multi-code transmission, the uplink data throughput rate can reach 5.76Mbit/s, greatly improving the uplink.
  • RNC Radio Network Controller
  • the Quality of Service (QoS) control in the existing HSUPA system generally sets the average number of HARQ Retransmissions (NHR), which is a fixed value, and the QoS control passes through the outer ring.
  • NHR HARQ Retransmissions
  • OLPC Outer Loop Power Control
  • the OLPC periodically monitors the number of retransmissions of the Protocol Data Unit (PDU) on the MAC-e and/or MAC-es, and adjusts the signal-to-interference ratio according to the relationship between the actual number of retransmissions and the number of retransmissions. ( Signal to Interference Ratio , SIR ) Target value.
  • PDU Protocol Data Unit
  • SIR Signal to Interference Ratio
  • each service is assigned a Maximum Bit Rate (MBR), and the UE or the NodeB has its own maximum capability.
  • MLR Maximum Bit Rate
  • the maximum capability of the UE determines the maximum rate supported by the UE, and the maximum capability of the NodeB.
  • the maximum rate supported by the NodeB is determined.
  • the limit rate of the service is the minimum rate that the core network assigns to the UE, the maximum rate supported by the UE, and the minimum rate supported by the NodeB.
  • the inventor has found that at least the following problems exist in the prior art: If the NHR value of the configuration is relatively large, when the power load of the cell is light, the service cannot reach the limit rate; if the configured NHR value is relatively small, the power of the cell When the load is light, the capacity of the cell is wasted, and thus the NHR value set here cannot well meet the requirements in the network state.
  • Embodiments of the present invention provide a method, device, and system for adjusting the number of hybrid automatic retransmissions. According to the method provided by the embodiment of the present invention, dynamic adjustment of the number of HARQ retransmissions according to the uplink radio network resource status is implemented.
  • the embodiment of the present invention provides a method for adjusting the number of hybrid automatic retransmissions, including: acquiring an uplink wireless network resource status of a cell;
  • the embodiment of the present invention further provides a hybrid automatic retransmission number adjusting device, which includes:
  • An acquiring module configured to acquire an uplink wireless network resource status of the cell
  • the adjusting module is configured to adjust the current hybrid automatic retransmission times according to the uplink wireless network resource status acquired by the acquiring module.
  • the embodiment of the present invention further provides a hybrid automatic retransmission number adjustment system, including a base station and a radio network controller.
  • the base station is configured to detect an uplink radio network resource status where the cell is located, and send the detected uplink radio network resource status to the radio network controller;
  • the radio network controller is configured to acquire an uplink radio network resource status of the cell that is sent by the base station, and adjust a current hybrid automatic retransmission frequency according to the obtained uplink radio network resource status.
  • the embodiment of the present invention can dynamically adjust the number of HARQ retransmissions according to the state of the uplink radio network resource where the cell is located, and meet the retransmission requirements in different network states.
  • FIG. 1 is a flowchart of a method for adjusting the number of hybrid automatic retransmissions in an embodiment of the present invention
  • FIG. 2 is a specific flowchart of a method for adjusting the number of hybrid automatic retransmissions in an embodiment of the present invention
  • FIG. 3 is another specific flow chart of a method for adjusting the number of hybrid automatic retransmissions in an embodiment of the present invention
  • FIG. 4 is another specific flow chart of a method for adjusting the number of hybrid automatic retransmissions in an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a hybrid automatic retransmission times adjusting device according to an embodiment of the present invention
  • FIG. 6a to FIG. 6c are schematic structural diagrams of an adjusting module according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of a hybrid automatic retransmission number adjustment system in an embodiment of the present invention. detailed description
  • Embodiments of the present invention provide a method, device, and system for adjusting the number of hybrid automatic retransmissions. According to the method provided by the embodiment of the present invention, dynamic adjustment of the number of HARQ retransmissions according to the uplink radio network resource status is implemented.
  • FIG. 1 is a flowchart of a method for adjusting the number of hybrid automatic retransmissions in an embodiment of the present invention.
  • the embodiment of the present invention adjusts the current HARQ according to the acquired status of the uplink radio network resource by acquiring the state of the uplink radio network resource of the cell.
  • the number of retransmissions, the method can include: Step S101: Obtain an uplink wireless network resource status of the cell.
  • Obtaining the status of the uplink wireless network resource of the cell may be performed in various manners, for example, according to the received message acquisition or the active detection.
  • the active detection process can be performed in various ways, for example, by detecting a preset detection period, and detecting the uplink radio resource status of the cell according to the detection period.
  • the uplink radio network resource may include at least one of the following: a power load of the cell, a channel unit occupancy of the cell, an actual transmission rate of all users who use the cell as the serving cell, and a ratio of the highest bit rate of the assignment.
  • Step S102 Adjust the number of HARQ retransmissions according to the uplink radio network resource status of the acquired cell.
  • the current HARQ retransmission times can be adjusted in multiple ways:
  • the current HARQ retransmission times may be adjusted to a preset upper limit of the number of HARQ retransmissions, that is, a high retransmission target value; or, according to a preset adjustment step, Adjusting the current number of HARQ retransmissions; or, when the current number of HARQ retransmissions is a preset lower limit of the number of HARQ retransmissions, that is, a low retransmission target value, adjusting the current number of HARQ retransmissions to a preset number of HARQ retransmissions
  • the upper limit value that is, the high retransmission target value; or, when the current HARQ retransmission number is less than the preset upper limit of the HARQ retransmission times, that is, the high retransmission target value, the current adjustment is adjusted according to the preset adjustment step size.
  • the number of HARQ retransmissions is adjusted according to the preset adjustment step size.
  • the current number of HARQ retransmissions may be adjusted to a preset lower limit of the number of HARQ retransmissions, that is, a low retransmission target value; or, according to a preset adjustment step, downward Adjusting the current number of HARQ retransmissions; or, when the current number of HARQ retransmissions is a preset upper limit of the number of HARQ retransmissions, that is, the high retransmission target value, the current HARQ retransmission times are adjusted to the preset number of HARQ retransmissions.
  • the lower limit value that is, the low retransmission target value; or, when the current HARQ retransmission number is greater than the preset lower limit of the HARQ retransmission times, that is, the low retransmission target value, the downward adjustment is performed according to the preset adjustment step size.
  • the current number of HARQ retransmissions is not limited to the current HARQ retransmissions.
  • FIG. 2 A specific flowchart of the method for adjusting the number of hybrid automatic retransmissions in the embodiment of the present invention is shown in FIG. 2, and the number of HARQ retransmissions is adjusted according to the obtained power load of the cell, including:
  • Step S201 Acquire a power load of the cell.
  • Step S202 determining whether the power load is less than a preset uplink adaptive retransmission power load congestion cancellation threshold, if the power load of the cell is less than a preset uplink adaptive retransmission power load congestion cancellation threshold, proceeding to step S203;
  • Step S203 When it is determined that the number of HARQ retransmissions is a high retransmission target value, proceed to step S204;
  • Step S204 Adjust the high retransmission target value to the low retransmission target value.
  • the current HARQ retransmission times value can help to increase the maximum effective rate of the service, because the maximum effective rate of the service is MBR/(1 + average retransmission times), and the usage is low.
  • the maximum effective rate when the number of retransmissions is higher than the maximum effective rate when the number of high retransmissions is used, and the air interface load resource can be effectively utilized when the number of low retransmissions is used.
  • the current number of HARQ retransmissions is set to a preset low retransmission target value.
  • the power load of the cell is less than the uplink adaptive retransmission power load congestion cancellation threshold, the power load of the cell is in a non-congested state, and when the current HARQ retransmission number is set to a low retransmission target value, the low retransmission target value is The QoS control target value of the HSUPA service does not cause congestion of the channel element (CE) through this adjustment.
  • the adjustment method herein is not limited to the foregoing manner. For example, in reducing the current number of HARQ retransmissions, the current retransmission times may be adjusted to a low retransmission target value; or the current adjustment step is adjusted according to a preset adjustment step size. The number of HARQ retransmissions; or, when the current number of HARQ retransmissions is greater than a preset low retransmission target value, adjust the current HARQ retransmission times downward according to the preset adjustment step size.
  • FIG. 3 A specific flowchart of the method for adjusting the number of hybrid automatic retransmissions in the embodiment of the present invention is shown in FIG. 3, and the current HARQ retransmission times are adjusted according to the obtained power load of the cell and the channel unit occupancy rate of the cell, including:
  • Step S301 Acquire a power load of the cell and a channel unit occupancy rate of the cell.
  • Step S302 determining whether the power load is not greater than a preset uplink adaptive retransmission power load congestion threshold, and if yes, proceeding to step S303;
  • Step S303 determining whether the channel unit occupancy rate is greater than a preset uplink adaptive retransmission channel unit resource congestion threshold, and if yes, proceeding to step S304;
  • step S302 and step S303 are in no particular order, and simultaneously satisfy the work. If the rate load is not greater than the preset uplink adaptive retransmission power load congestion threshold, and the channel unit occupancy is greater than the preset uplink adaptive retransmission channel unit resource congestion threshold, the steps are performed.
  • Step S304 determining whether the number of HARQ retransmissions is greater than a preset low retransmission target value, if yes, proceeding to step S305;
  • Step S305 Adjust the current HARQ retransmission times downward according to the preset adjustment step size.
  • the power load of the cell when the power load of the cell is higher than the uplink adaptive retransmission power load congestion threshold, the power load of the cell is in a congested state; when the CE occupancy rate of the cell is higher than the uplink adaptive retransmission CE resource congestion threshold
  • the CE When the time is limited, the CE is in a shortage state.
  • the CE When the CE is in a state of shortage, that is, the CE resource is in a congested state, and the power load of the cell is not in a congested state, lowering the HARQ retransmission times value can improve the CE utilization rate and improve the cell throughput rate.
  • the HARQ retransmission time value After the HARQ retransmission time value is reduced, some air interface resources on the base station are translated, and the corresponding CE is also released.
  • This setting can improve the CE utilization rate and increase the cell capacity.
  • the adjustment method herein is not limited to the foregoing manner. For example, in reducing the current number of HARQ retransmissions, the current retransmission times may be adjusted to a low retransmission target value; or the current HARQ may be adjusted downward according to a preset adjustment step size. The number of retransmissions; or when the current number of HARQ retransmissions is greater than a preset low retransmission target value, the current retransmission number is adjusted to a low retransmission target value.
  • the method for adjusting the current HARQ retransmission times may refer to the process shown in FIG. 2.
  • FIG. 4 A further specific flowchart of the method for adjusting the number of hybrid automatic retransmissions in the embodiment of the present invention is shown in FIG. 4, according to the obtained power load of the cell, the channel unit occupancy rate of the cell, and all the cells serving as the serving cell.
  • Step S401 Obtain a ratio of a power load of the cell, a channel unit occupancy rate of the cell, an actual transmission rate of all users that use the cell as the serving cell, and a highest bit rate that is assigned.
  • Step S402 Determine whether the power load is greater than a preset. Uplink adaptive retransmission power load congestion threshold, if yes, proceed to step S403;
  • Step S403 determining whether the channel unit occupancy rate is less than a preset uplink adaptive retransmission channel unit resource congestion cancellation threshold, if yes, proceeding to step S404;
  • Step S404 determining whether the ratio of the actual transmission rate of the user who uses the cell as the serving cell and the assigned highest bit rate is less than a preset rate proportional threshold, and if yes, proceeding to step S405;
  • step S402 to step S404 is in no particular order. Only when the power load is greater than the preset uplink adaptive retransmission power load congestion threshold, when the channel unit occupancy rate is less than the preset uplink adaptive weight. When the channel unit resource congestion cancellation threshold is transmitted, and the ratio of the actual transmission rate of the user who uses the cell as the serving cell and the assigned highest bit rate is less than the preset rate proportional threshold, step S405 can be performed.
  • Step S405 determining whether the number of HARQ retransmissions is a low retransmission target value, and if yes, proceeding to step S406;
  • Step S406 Adjust the low retransmission target value to the high retransmission target value.
  • Table 1 is a set of simulation test result data, measured data for 20 UEs:
  • adjusting the current number of retransmissions to the high retransmission target value increases the CE consumption under the same effective throughput rate. Therefore, the current retransmission times can be adjusted to be high only when the cell CE resources are not congested. Retransmit the target value.
  • the low retransmission target value is adjusted to the high retransmission target value, so that the adjusted UE throughput rate is not It will be lower than before the adjustment.
  • the CE of the cell is not limited, and the throughput of all users served by the cell is less than a preset rate proportional threshold, and needs to be improved.
  • the number of HARQ retransmissions may be 1: (1 + high retransmission target value), when the number of retransmissions is configured to the high retransmission target value, This will cause the user's transfer rate to be lower than the pre-configuration transfer rate.
  • the adjustment method herein is not limited to the foregoing manner.
  • the current HARQ retransmission times may be adjusted to a high retransmission target value; or the current HARQ weight is adjusted upward according to a preset adjustment step size.
  • the number of transmissions; or when the number of HARQ retransmissions is a low retransmission target value, the current HARQ retransmission times are adjusted upward according to the preset adjustment step size.
  • a detection period may be preset in the corresponding device in the HSUPA system, for example, 10 seconds or other periodic time is used to detect the uplink radio network resources of the cell, and the uplink radio network resources of the cell are detected according to the detection period. If the conditions included in one of the above three flowcharts are met, the number of HARQ retransmissions needs to be adjusted to meet the retransmission times setting requirements in different states.
  • FIG. 5 is a structural diagram of a hybrid automatic retransmission times adjusting device according to an embodiment of the present invention.
  • the device acquires an uplink radio network resource status of a cell, and adjusts the number of HARQ retransmissions according to the acquired uplink radio network resource status.
  • the device is provided with an obtaining module 501 and an adjusting module 502, wherein: the obtaining module 501 is configured to obtain the uplink wireless network resource status of the cell; and the adjusting module 502 is configured to adjust the HARQ retransmission times according to the uplink wireless network resource status acquired by the obtaining module 501.
  • the uplink radio network resource includes at least one of the following: a power load of the cell, an uplink channel unit occupancy rate, a ratio of an actual transmission rate of all users who use the cell as a serving cell, and a highest bit rate of the assignment.
  • the method further includes: a detecting module 503, where the detecting module 503 is configured to detect the status of the radio network resource on the cell, and detect the detected uplink wireless network.
  • the resource status is sent to the obtaining module 501, where the obtaining module 501 can also receive the uplink unlimited network resource status sent by other devices.
  • Figure 6a to Figure 6c shows a schematic structural diagram of the adjustment module 502 in the embodiment of the present invention
  • the adjustment module 502 in Figure 6a may include a first determination unit 601 and a first adjustment unit 602
  • the adjustment module 502 in FIG. 6b may include a second determination unit 603 and a second adjustment unit 604
  • the adjustment module 502 in FIG. 6c may include a third determination unit 605 and a third adjustment unit 606.
  • the first determining unit 601 is configured to determine whether the power load of the cell in the uplink radio network resource status acquired by the acquiring module 501 is less than a preset uplink adaptive retransmission power load congestion cancellation threshold; The first determining unit 601 reduces the number of HARQ retransmissions of the HSUPA when the power load of the acquired cell is less than the uplink adaptive retransmission power load congestion cancellation threshold.
  • the second determining unit 603 is configured to determine the uplink wireless acquired by the acquiring module 501.
  • the second adjusting unit 604 is configured to determine, in the second determining unit 603, that the power load of the cell in the uplink radio network resource status acquired by the acquiring module 501 is not greater than the uplink adaptive retransmission power load congestion threshold.
  • the third determining unit 605 is configured to determine the uplink radio network resource status acquired by the acquiring module 501. Whether the power load of the cell is greater than the uplink adaptive retransmission power load congestion threshold, and whether the channel unit occupancy rate of the cell in the uplink radio network resource status acquired by the obtaining module 501 is smaller than the uplink adaptive retransmission channel unit resource congestion cancellation threshold.
  • the unit 606 is configured to determine, by the third determining unit 605, that the power load of the cell acquired by the acquiring module 501 is greater than the uplink adaptive retransmission power load congestion threshold, and that the channel unit occupancy rate of the cell acquired by the obtaining module 501 is smaller than the uplink adaptive retransmission.
  • the units in FIG. 6a to FIG. 6c may all or partially exist in the same adjustment module, and the number of HARQ retransmissions is adjusted according to the uplink radio network resource status.
  • the first adjustment in the hybrid automatic retransmission number adjustment device provided by this embodiment The entire unit, the second adjustment unit, and the third adjustment unit may adopt various adjustment methods introduced in the foregoing method embodiments shown in FIG. 2 to FIG. 4 when adjusting the number of HARQ retransmissions, and details are not described herein again. .
  • FIG. 7 is a structural diagram of a hybrid automatic retransmission number adjustment system according to an embodiment of the present invention.
  • the system includes a base station 71 and a radio network controller 70, and the base station 71 is configured to detect an uplink radio network resource condition in which the cell is located. The detected uplink wireless network resource status is sent to the radio network controller 70.
  • the radio network controller 70 is configured to acquire the uplink radio network resource status of the cell sent by the base station 71, and adaptively adjust the HARQ according to the acquired uplink radio network resource status. The number of retransmissions.
  • the number of HARQ retransmissions of the HSUPA is adaptively adjusted to meet the retransmission times requirement in different network states. After the power load of the cell is in a non-congested state, the number of HARQ retransmission times can be reduced when the current resource is in a congested state and the power load of the cell is not in a congested state.
  • the method may include the following steps: receiving an identifier configuration command sent by the upper-level device, obtaining a device identifier carried in the identifier configuration command, obtaining a device identifier according to the device identifier, and storing the obtained device identifier locally.
  • the storage medium referred to herein is, for example, a ROM/RAM, a magnetic disk, an optical disk, or the like.

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

Abstract

Le mode de réalisation de la présente invention porte sur un procédé, un dispositif et un système pour ajuster les instants de demande de répétition automatique hybride (HARQ), le procédé d'ajustement des instants de demande de répétition automatique hybride comprenant : l'obtention d'un état de ressource de réseau sans fil de liaison montante d'un cellulaire ; l'ajustement des instants de demande de répétition automatique hybride courants conformément à l'état de ressource de réseau sans fil de liaison montante obtenu. Le dispositif d'ajustement des instants de demande de répétition automatique hybride comprend : un module d'obtention, pour obtenir l'état de ressource de réseau sans fil de liaison montante du cellulaire ; un module d'ajustement, pour ajuster les instants de demande de répétition automatique hybride courants conformément à l'état de ressource de réseau sans fil de liaison montante obtenu par le module d'obtention. Le mode de réalisation de la présente invention porte également sur un système d'ajustement des instants de demande de répétition automatique hybride. Les instants de retransmission de demande de répétition automatique hybride (HARQ) sont ajustés conformément à l'état de ressource de réseau sans fil de liaison montante du cellulaire pour satisfaire les exigences de retransmission dans différents états du réseau.
PCT/CN2009/071771 2008-05-15 2009-05-13 Procédé, dispositif et système d'ajustement des instants de demande de répétition automatique hybride WO2009138033A1 (fr)

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CN111757512A (zh) * 2019-03-28 2020-10-09 成都鼎桥通信技术有限公司 上行调度方法和装置
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CN103891348A (zh) 2012-09-29 2014-06-25 华为技术有限公司 高速媒体接入控制实体的重置方法及相关装置
JP6543624B2 (ja) * 2013-07-17 2019-07-10 クアルコム，インコーポレイテッド 再送信要求を動的に送信するための方法および装置
CN106850125B (zh) * 2015-12-03 2019-11-08 上海无线通信研究中心 面向蜂窝网和wlan融合组网的mac层数据包重传机制优化方法
CN105792101A (zh) * 2015-12-31 2016-07-20 深圳市金立通信设备有限公司 一种确定重复发送的次数的方法、终端及基站
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