WO2014026482A1 - 开环链路自适应的调整方法及装置 - Google Patents

开环链路自适应的调整方法及装置 Download PDF

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Publication number
WO2014026482A1
WO2014026482A1 PCT/CN2013/073387 CN2013073387W WO2014026482A1 WO 2014026482 A1 WO2014026482 A1 WO 2014026482A1 CN 2013073387 W CN2013073387 W CN 2013073387W WO 2014026482 A1 WO2014026482 A1 WO 2014026482A1
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WIPO (PCT)
Prior art keywords
user equipment
state
base station
transmission process
information transmission
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PCT/CN2013/073387
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English (en)
French (fr)
Inventor
曾昆
田园
叶枫
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP13829333.7A priority Critical patent/EP2887572B1/en
Publication of WO2014026482A1 publication Critical patent/WO2014026482A1/zh
Priority to US14/622,088 priority patent/US9634793B2/en

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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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters

Definitions

  • the present invention relates to the field of communication systems, and in particular, to an adaptive adjustment method and apparatus for an open loop link. Background technique
  • Link adaptation technology is a technology designed to overcome the time-varying characteristics of wireless channels and improve system performance. Its main advantages are the ability to improve the reliability of communication links, improve power resources and frequency utilization, and improve system quality of service and transmission capacity.
  • AMC Adaptive Modulation and Coding
  • MCS Modulation and Coding Scheme
  • a technique for correcting the MCS value selected by AMC based on the HARQ (Hybrid Automatic Repeat Request) information based on feedback from the user equipment is currently used.
  • 0LLA pen Loop Link Adaptation, Loop link adaptation
  • the system measurement error causes an error between the MCS value used in the AMC and the channel tolerable MCS value, and the error can be adjusted by setting a correction amount, which is called 0LLA Value, and the system continuously adjusts the OLLA value during transmission.
  • the embodiment of the invention provides an adaptive adjustment method and device for an open loop link, which reduces the error of the OLLA value corresponding to the MC S value obtained by the system, and improves the transmission performance of the communication system.
  • An adaptive adjustment method for an open loop link includes:
  • the base station classifies the state of the user equipment during the information transmission process
  • the base station configures an open loop link adaptive adjustment value OLLA value for each type of state corresponding to the user equipment
  • the base station after adjusting the modulation coding policy MC S value according to the OLLA value corresponding to the current state of the user equipment, modifies the OLLA value corresponding to the current state of the user equipment.
  • the method specifically includes:
  • the base station according to the rank of the user equipment, the number of layers in the transmission process of the user equipment, the total number of layers configured in the transmission process of the user equipment, and the preset state of the user equipment in the system At least one classification condition is that the user equipment is classified in a state in which the information is transmitted;
  • the base station classifies the state in which the user equipment is in the process of transmission according to different values of the user equipment rank;
  • the base station transmits information to the user equipment according to different values of the number of layers to which the user equipment is scheduled, when the user equipment is in the process of transmitting the number of layers. Classify the state in the process;
  • the base station is in the letter according to different values of the total number of layers configured by the user equipment.
  • the base station divides the state in which the user equipment is located into the current modulo identification of the user equipment.
  • the current mode identification of the modulo and the user equipment is a non-modulo state;
  • the base station classifies the state of the user equipment in the information transmission process by preset different speed thresholds.
  • An adaptive adjustment device for an open loop link comprising:
  • a classifying unit configured to classify a state in which the user equipment is in the process of information transmission
  • a configuration unit configured to configure an open loop link adaptive adjustment value for each type of state corresponding to the user equipment 0LLA value
  • a determining unit configured to determine a state in which the user equipment is in a current information transmission process
  • a selecting unit configured to select an OLL A value corresponding to a current state of the user equipment from the 0LLA values corresponding to each type of state;
  • an adjusting unit configured to adjust a modulation coding strategy MCS value according to an 0LLA value corresponding to a current state of the user equipment
  • the classifying unit is specifically configured to: according to the rank of the user equipment, the number of layers in the transmission process of the user equipment, the total number of layers configured in the transmission process of the user equipment, and the user equipment in the system At least one of the preset conditions is a classification of the state in which the user equipment is in the information transmission process;
  • the classifying unit is further configured to classify, according to different values of the user equipment ranks, states of the user equipment during the information transmission process;
  • the classifying unit is further configured to classify, according to different values of the number of layers to which the user equipment is scheduled, the state in which the user equipment is in the process of transmitting, and transmitting;
  • the classifying unit is further configured to classify, according to different values of the total number of layers configured by the user equipment, a state in which the user equipment is in a signal transmission process;
  • the classifying unit is further configured to: when the preset state is whether the user equipment is modulo in the nonlinear precoding communication system, divide the state of the user equipment into the current request of the user equipment.
  • the modulo identifier is a mode of modulo and the current modulo identification of the user equipment is non-modulo;
  • the classifying unit is further configured to: when the preset state is the moving speed of the user equipment, classify the state of the user equipment in the information transmission process by preset different speed thresholds.
  • the method and device for adjusting the open-loop link adaptively provided by the embodiment of the present invention first, the base station classifies the state of the user equipment in the information transmission process, and then classifies each type of the state corresponding to the user equipment. Configuring an open loop link adaptive adjustment value OLL A value respectively; then determining, by the base station, a state in which the user equipment is in the current information transmission process, and selecting and selecting an OLL A value corresponding to each type of each state The OLL A value corresponding to the current state of the user equipment; the last, the base station, after adjusting the modulation and coding policy MC S value according to the OLL A value corresponding to the current state of the user equipment, modifying the current user equipment The 0LLA value corresponding to the state it is in.
  • FIG. 1 is a schematic flowchart of an apparatus for adjusting an open loop link according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of an apparatus for adjusting an open loop link according to an embodiment of the present invention
  • Schematic diagram of the base station structure Schematic diagram of the base station structure. detailed description
  • This embodiment provides an adaptive adjustment method for an open loop link. As shown in FIG. 1, the method includes:
  • the base station classifies the state of the user equipment during the information transmission process.
  • the base station may be configured according to the rank of the user equipment, the number of layers in the transmission process of the user equipment, the total number of layers configured in the transmission process of the user equipment, and the preset of the user equipment in the system.
  • At least one of the classification conditions is a classification of the state in which the user equipment is in the process of information transmission.
  • the base station classifies a state in which the user equipment is in the information transmission process according to different values of the user equipment rank. For example, if the user equipment rank is at most 2, the user equipment has two states: the current rank of the user equipment is 1 and the current rank of the user equipment is 2, the total number of user equipment states is 2, and the status and user of the base station to the user equipment rank is 1.
  • the state of the device rank is 2, and an OLLA value is set separately.
  • the base station can set more OLLA values, but set at least 2 OLLA values for each user equipment.
  • the base station classifies the state of the user equipment in the information transmission process according to different values of the number of layers to which the user equipment is scheduled. For example, when the user device
  • the UE When the maximum number of allowed layering layers of the UE is 4 layers, the UE has four states: the UE is scheduled to the layer 1, the UE is scheduled to the layer 2, the UE is scheduled to the layer 3, and the UE is scheduled to the layer 4, the UE The number of state total classifications is equal to 4; the base station eNB sets a state in which the UE is scheduled to layer 1, a state in which the UE is scheduled to layer 2, a state in which the UE is scheduled to layer 3, and a state in which the UE is scheduled to layer 4, respectively.
  • the OLLA value where the base station eNB can set more OLLA values, but sets at least 4 OLLA values for each UE.
  • the base station classifies the state of the user equipment in the information transmission process according to different values of the total number of layers configured by the user equipment. For example, when the maximum number of allowed layerings is 4 when the UE is scheduled, the UE has four states: the total number of layers allocated in the UE scheduling is 1, the total number of layers allocated in the UE scheduling is 2, and the total allocation in the UE scheduling When the number of layers is 3 and the UE is scheduled, the total number of layers is 4, and the total number of states of the UE is equal to 4; the total number of layers allocated by the eNB to the UE is 1 and the total number of layers allocated by the UE is 2 The state, the state in which the total number of layers allocated by the UE is 3, and the state in which the total number of layers allocated in the UE scheduling is 4, respectively, an OLLA value is set, wherein the eNB can set more OLLA values, but for each The UE sets at least 4 OLLA values.
  • the base station divides the state in which the user equipment is located into the current modulo identification of the user equipment.
  • the current modulo identification is non-modulo two states.
  • the base station classifies the state of the user equipment in the information transmission process by preset different speed thresholds.
  • the invention includes, but is not limited to, preset two speed thresholds.
  • the base station may further classify the state of the user equipment according to a combination of the classification conditions. Specifically, the eNB classifies the UE state according to the number of layers in which the UE is scheduled and the total number of layers allocated by the UE.
  • the UE has ten states, which are: The total number of layers allocated to the UE is 1 is scheduled to the layer 1, and the total number of layers allocated by the UE is 2 The total number of layers allocated to the layer 1 and the UE is 2 is scheduled to the layer 2, the total number of layers allocated to the UE is 3, and the total number of layers is 3, and the total number of layers allocated to the UE is 3 To Layer 2, the total number of layers allocated to the UE is 3, and the total number of layers is 4, and the total number of layers allocated to the UE is 4, and the total number of layers is 4, and the total number of layers is 4. 2.
  • the total number of layers is 4, which is scheduled to layer 3.
  • the total number of layers is 4, which is scheduled to layer 4.
  • the total number of states of the UE is equal to 10.
  • the eNB sets an OLLA value for each of the ten states, wherein the eNB may set more OLLA values, but at least 10 OLLA values are set for each UE.
  • the base station configures an open loop link adaptive adjustment value 0LLA value for each type of state corresponding to the user equipment.
  • the base station determines a state in which the user equipment is in the current information transmission process, and selects, from the 0LLA values corresponding to each type of state, a state corresponding to the current state of the user equipment. 0LLA value.
  • the base station modifies the 0LLA value corresponding to the current state of the user equipment.
  • the base station adjusts the MCS value according to the 0LLA value corresponding to the current state of the user equipment, and then sends the data packet to the user equipment; and then the base station determines the ACK/non-acknowledgment NACK feedback information according to the received data packet, and the 0LLA The value is updated; finally, the base station saves the updated 0LLA value for the next transmission of the packet.
  • the method provided in this embodiment separately obtains the 0LLA value corresponding to the different states in which the user equipment is located, and adjusts the MCS value of the modulation and coding policy according to the 0LLA value corresponding to the current state of the user equipment, thereby reducing the acquired MCS.
  • the error of the value corresponding to the 0LLA value improves the transmission performance of the communication system.
  • the embodiment provides an apparatus for adjusting an open loop link. As shown in FIG. 2, the apparatus includes: a classification unit 2 1 , a configuration unit 2 2 , a determination unit 2 3 , a selection unit 24 , an adjustment unit 25 , Update unit 2 6.
  • the classification unit 2 1 can be used to classify the state in which the user equipment is in the process of information transmission.
  • the classification unit 2 1 may be specifically configured to: according to the rank of the user equipment, the number of layers in the transmission process of the user equipment, the total number of layers configured in the transmission process of the user equipment, and the user equipment in the system At least one of the classification conditions is a classification of the state in which the user equipment is in the process of information transmission.
  • the classification unit 2 1 may be further configured to classify the state of the user equipment in the information transmission process according to different values of the user equipment rank.
  • the classification unit 2 1 may be further configured to classify the state of the user equipment in the information transmission process according to different values of the number of layers to which the user equipment is scheduled.
  • the classification unit 2 1 may be further configured to classify the state of the user equipment in the information transmission process according to different values of the total number of layers configured by the user equipment.
  • the classifying unit 2 1 may be further configured to: when the preset state is the user equipment in the nonlinear precoding communication system, whether the state of the user equipment is divided into the user
  • the current modulo identification of the device is a mode of modulo and the current modulo identification of the user equipment is non-modulo.
  • the classification unit 2 1 may be further configured to: when the preset state is the moving speed of the user equipment, classify the state of the user equipment during the information transmission by preset different speed thresholds.
  • the configuration unit 2 2 may be configured to configure an open loop link adaptive adjustment value OLL A value for each type of the classified state corresponding to the user equipment.
  • the determining unit 2 3 may be configured to determine a state in which the user equipment is in the current information transmission process.
  • the selecting unit 24 may be configured to select, from the 0LLA values corresponding to the respective types of states, an OLL ⁇ value corresponding to a state in which the user equipment is currently located.
  • the adjusting unit 25 is configured to adjust the modulation and coding policy MCS value according to the OLL A value corresponding to the current state of the user equipment.
  • the updating unit 26 can be configured to modify the 0LLA value corresponding to the current state of the user equipment.
  • the entity of the open loop link adaptive adjustment apparatus may be a base station.
  • the base station includes: a central processing unit 31, an input device 32, an output device 33, and a memory 34.
  • the device 32, the output device 33, and the memory 34 are connected to the central processing unit 31.
  • the central processing unit 31 may specifically include: a classification unit 3101, a configuration unit 3102, a determination unit 3103, a selection unit 3104, an adjustment unit 3105, and an update unit 3106.
  • the classification unit 3101 can be used to classify the state in which the user equipment is in the process of information transmission.
  • the classification unit 3101 is specifically configured to: according to the rank of the user equipment, the number of layers in the transmission process of the user equipment, the total number of layers configured in the transmission process of the user equipment, and the user equipment in the system At least one of the preset conditions is that the user equipment is in the letter
  • the status of the transmission process is classified.
  • the classification unit 3101 may be further configured to classify, according to different values of the user equipment ranks, states of the user equipment during the information transmission process.
  • the classification unit 3101 may be further configured to classify, according to different values of the number of layers to which the user equipment is scheduled, the state in which the user equipment is in the information transmission process.
  • the classifying unit 3101 may be further configured to classify the state of the user equipment during the information transmission process according to different values of the total number of layers configured by the user equipment.
  • the categorizing unit 3101 may be further configured to: when the preset state is the modulo state of the user equipment in the non-linear precoding communication system, divide the state in which the user equipment is located into the user equipment The current modulo identification is modulo and the current modulo identification of the user equipment is non- Seeking two states.
  • the classification unit 31 01 may be further configured to: when the preset state is the moving speed of the user equipment, classify the state of the user equipment during the information transmission by preset different speed thresholds.
  • the configuration unit 31 02 may be configured to separately configure an open loop link adaptive adjustment value 0LLA value for each type of the classified state corresponding to the user equipment.
  • the determining unit 31 0 3 can be used to determine the state of the user equipment during the current information transmission.
  • the selecting unit 31 04 may be configured to select, from the 0LLA values corresponding to the respective types of states, an 0LLA value corresponding to a state in which the user equipment is currently located.
  • the adjusting unit 31 05 can be configured to adjust the modulation and coding policy MCS value according to the 0LLA value corresponding to the current state of the user equipment.
  • the updating unit 31 06 can be used to modify the 0UA value corresponding to the current state of the user equipment.
  • the device provided in this embodiment separately obtains the 0LLA value corresponding to the different states in which the user equipment is located, and adjusts the MCS value of the modulation and coding policy according to the 0LLA value corresponding to the current state of the user equipment, thereby reducing the acquired MCS.
  • the error of the value corresponding to the 0LLA value improves the transmission performance of the communication system.
  • the apparatus for adjusting an open-loop link may implement the foregoing method embodiment.
  • the method and apparatus for adjusting the open loop link adaptation provided by the embodiment of the present invention can be applied to the field of communication systems, but is not limited thereto.
  • the storage medium may be a magnetic disk, an optical disk, or a read-only storage memory. Read-Only Memory (ROM) or Random Access Memory (RAM).

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

本发明实施例公开了一种开环链路自适应的调整方法及装置，首先基站对用户设备在信息传输过程中所处的状态进行分类，再为所述分类后的每一类状态分别配置一个开环链路自适应调整值OLLA值；然后基站确定所述用户设备当前所处的状态，并从所述每一类状态分别对应的OLLA值中选择与所述用户设备当前所处的状态对应的OLLA值；最后所述基站根据与所述用户设备当前所处的状态对应的OLLA值调整调制编码策略MCS值后，所述基站修改所述用户设备当前所处的状态对应的OLLA值。本发明适用于通信系统领域。

Description

开环链路自适应的调整方法及装置
本申请要求于 2012 年 8 月 15 日提交中国专利局、 申请号为 201210290235. X、发明名称为 "开环链路自适应的调整方法及装置" 的 中国专利申请的优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信系统领域，特别涉及一种开环链路自适应的调整方法 及装置。 背景技术
链路自适应技术是一项旨在克服无线信道时变特性，提高系统性能而 产生的技术。 其主要优点是能够提高通信链路的可靠性、 提高功率资源和 频率利用率、 以及提高系统服务质量和传输容量。
在 LTE(Long Term Evolution , 长期演进）及后续演进系统中， AMC (Adaptive Modulation and Coding, 自适应调制编码）是一种十分重 要的链路自适应方法。 然而， 实际系统环境存在的测量误差， 使得 AMC无 法准确地跟踪信道变化和获取信道状况， 造成选取的调制编码方式（通常 用 MCS ( Modulation and Coding Scheme, 调制编码策略） 值来表征）与实 际信道传输环境不匹配。 当选取的 MCS值低于信道可容忍 MCS值（定义为信 道最大限度发送信息时的 MCS值）时， 表示没有充分地利用信道资源； 而当 选取的 MCS值高于信道可容忍的 MCS值时， 又会增加传输错误几率， 造成重 传， 浪费系统功率和频率资源。
针对这一问题， 目前采用一种基于用户设备反馈的 HARQ(Hybrid Automatic Repeat Request, 混合自动重传请求）信息， 对 AMC选取的 MCS 值进行合理修正的技术—— 0LLA(0pen Loop Link Adaptation, 开环链路 自适应）， 其中， 系统测量误差会造成 AMC中使用的 MCS值与信道可容忍 MCS 值之间存在误差， 该误差可设置修正量进行调整， 该修正量大小称为 0LLA 值，并且在传输过程中，系统会不断调整 OLLA值。然而现有技术在进行 OLLA 值调整时不区别用户设备所处的不同状态，从而不能有效地获取用户设备 在不同状态的信息传输过程中 MCS值对应的 OLLA值，造成了系统获取的 MC S 值对应的 OLLA值误差较大， 影响了系统的传输性能。 发明内容
本发明实施例提供了一种开环链路自适应的调整方法及装置，降低了 系统获取的 MC S值对应的 OLLA值的误差， 提高了通信系统的传输性能。
本发明实施例采用的技术方案为：
一种开环链路自适应的调整方法， 包括：
基站对用户设备在信息传输过程中所处的状态进行分类；
所述基站为所述用户设备对应的分类后的每一类状态分别配置一个 开环链路自适应调整值 OLLA值；
所述基站确定所述用户设备在当前信息传输过程中所处的状态，并从 所述每一类状态分别对应的 OLLA值中选择与所述用户设备当前所处的状 态对应的 OLLA值；
所述基站根据与所述用户设备当前所处的状态对应的 OLLA值调整调 制编码策略 MC S值后， 修改所述用户设备当前所处的状态对应的 OLLA值。
所述方法具体包括：
所述基站根据所述用户设备的秩、 所述用户设备传输过程中所处层 数、 所述用户设备传输过程中所配置的总层数、 所述用户设备在系统中的 预设状态中的至少一种分类条件为所述用户设备在信息传输过程中所处 的状态进行分类；
当所述分类条件为所述用户设备的秩时，所述基站根据所述用户设备 秩的不同取值对所述用户设备在信, 传输过程中所处的状态进行分类； 当所述分类条件为所述用户设备传输过程中所处层数时，所述基站根 据所述用户设备被调度到的层数的不同取值对所述用户设备在信息传输 过程中所处的状态进行分类；
当所述分类条件为所述用户设备传输过程中所配置的总层数时，所述 基站根据所述用户设备所配置的总层数的不同取值对所述用户设备在信
, 传输过程中所处的状态进行分类；
当所述预设状态为所述用户设备在非线性预编码通信系统中是否为 求模状态时，所述基站将所述用户设备所处的状态分为所述用户设备当前 求模标识为求模和所述用户设备当前求模标识为非求模两种状态；
当所述预设状态为所述用户设备移动速度时，所述基站通过预设不同 速度门限对所述用户设备在信息传输过程中所处的状态进行分类。
一种开环链路自适应的调整装置， 包括：
分类单元， 用于对用户设备在信息传输过程中所处的状态进行分类； 配置单元，用于为所述用户设备对应的分类后的每一类状态分别配置 一个开环链路自适应调整值 0LLA值；
确定单元， 用于确定所述用户设备在当前信息传输过程中所处的状 态；
选择单元，用于从所述每一类状态分别对应的 0LLA值中选择与所述用 户设备当前所处的状态对应的 OLL A值；
调整单元，用于根据与所述用户设备当前所处的状态对应的 0LLA值调 整调制编码策略 MCS值；
更新单元， 用于修改所述用户设备当前所处的状态对应的 0LLA值。 所述分类单元， 具体用于根据所述用户设备的秩、 所述用户设备传输 过程中所处层数、 所述用户设备传输过程中所配置的总层数、 所述用户设 备在系统中的预设状态中的至少一种分类条件为所述用户设备在信息传 输过程中所处的状态进行分类；
所述分类单元，具体还用于根据所述用户设备秩的不同取值对所述用 户设备在信息传输过程中所处的状态进行分类； 所述分类单元，具体还用于根据所述用户设备被调度到的层数的不同 取值对所述用户设备在信, ¾传输过程中所处的状态进行分类；
所述分类单元，具体还用于根据所述用户设备所配置的总层数的不同 取值对所述用户设备在信, ¾传输过程中所处的状态进行分类；
所述分类单元，具体还用于当所述预设状态为所述用户设备在非线性 预编码通信系统中是否求模时，将所述用户设备所处的状态分为所述用户 设备当前求模标识为求模和所述用户设备当前求模标识为非求模两种状 态；
所述分类单元，具体还用于当所述预设状态为所述用户设备移动速度 时，通过预设不同速度门限对所述用户设备在信息传输过程中所处的状态 进行分类。
本发明实施例提供的开环链路自适应的调整方法及装置，首先基站对 用户设备在信息传输过程中所处的状态进行分类，再为所述用户设备对应 的分类后的每一类状态分别配置一个开环链路自适应调整值 OLL A值；然后 基站确定所述用户设备在当前信息传输过程中所处的状态，并从所述每一 类状态分别对应的 OLL A值中选择与所述用户设备当前所处的状态对应的 OLL A值； 最后所述基站根据与所述用户设备当前所处的状态对应的 OLL A 值调整调制编码策略 MC S值后， 修改所述用户设备当前所处的状态对应的 0LLA值。 现有技术在进行 OLL A值调整时不区别用户设备所处的不同状态， 从而不能有效地获取用户设备在不同状态的信息传输过程中 MC S值对应的 0LLA值， 造成了系统获取的 MC S值对应的 0LLA值误差较大， 影响了系统的 传输性能。 本发明通过分别获取用户设备所处的不同状态对应的 0LLA值， 降低了获取到的 MC S值对应的 OLL A值的误差，提高了通信系统的传输性能。 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例或现 有技术描述中所需要使用的附图作筒单地介绍， 显而易见地， 下面描述中 的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不 付出创造性劳动的前提下， 还可以根据这些附图获得其它的附图。
图 1为本发明实施例提供的开环链路自适应的调整方法流程图； 图 2为本发明实施例提供的开环链路自适应的调整装置结构示意图； 图 3为本发明实施例提供的基站结构示意图。 具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进 行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例， 而不是全部的实施例。基于本发明中的实施例， 本领域普通技术人员在没 有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的 范围。
为使本发明技术方案的优点更加清楚，下面结合附图和实施例对本发 明作详细说明。
本实施例提供一种开环链路自适应的调整方法， 如图 1所示， 所述方 法包括：
1 01、 基站对用户设备在信息传输过程中所处的状态进行分类。
其中， 所述基站可以根据所述用户设备的秩、 所述用户设备传输过程 中所处层数、 所述用户设备传输过程中所配置的总层数、 所述用户设备在 系统中的预设状态中的至少一种分类条件为所述用户设备在信息传输过 程中所处的状态进行分类。
具体地，所述基站根据所述用户设备秩的不同取值对所述用户设备在 信息传输过程中所处的状态进行分类。 例如， 设用户设备秩最大为 2 , 则 用户设备存在两种状态： 用户设备当前秩为 1和用户设备当前秩为 2 , 用户 设备状态总数为 2;基站对用户设备秩为 1的状态和用户设备秩为 2的状态， 分别设置一个 OLLA值。 其中， 基站可设置更多的 OLLA值， 但对每个用 户设备至少设置 2个 OLLA值。 可替换地，所述基站根据所述用户设备被调度到的层数的不同取值对 所述用户设备在信息传输过程中所处的状态进行分类。 例如， 当用户设备
UE在资源调度时最大允许配对层数为 4层时， UE存在四种状态： UE被调 度至层 1、 UE被调度至层 2、 UE被调度至层 3和 UE被调度至层 4 , UE的状 态总分类数等于 4; 基站 eNB对 UE被调度至层 1的状态、 UE被调度至层 2 的状态、 UE被调度至层 3的状态和 UE被调度至层 4的状态， 分别设置一个 OLLA值， 其中， 基站 eNB可设置更多的 OLLA值， 但对每个 UE至少设置 4 个 OLLA值。
可替换地，所述基站根据所述用户设备所配置的总层数的不同取值对 所述用户设备在信息传输过程中所处的状态进行分类。 例如， 当 UE调度 时最大允许配对层数为 4时， 则 UE存在四种状态： UE调度时所配总层数 为 1、 UE调度时所配总层数为 2、 UE调度时所配总层数为 3和 UE调度时所 配总层数为 4 , UE的状态总分类数等于 4; eNB对 UE调度时所配总层数为 1 的状态、 UE调度时所配总层数为 2的状态、 UE调度时所配总层数为 3的状 态和 UE调度时所配总层数为 4的状态， 分别设置一个 OLLA值， 其中， eNB 可设置更多的 OLLA值， 但对每个 UE至少设置 4个 OLLA值。
可替换地，当所述预设状态为所述用户设备在非线性预编码通信系统 中是否求模时，所述基站将所述用户设备所处的状态分为所述用户设备当 前求模标识为求模和所述用户设备当前求模标识为非求模两种状态。
可替换地， 当所述预设状态为所述用户设备移动速度时， 所述基站通 过预设不同速度门限对所述用户设备在信息传输过程中所处的状态进行 分类。 例如， 以用户设备的移动速度 X作为分类依据， 将所述用户设备在 信息传输过程中所处的状态分为低速（x < a km/ h)、 中速（a <=x < b km/ h) 、 高速（x > b km/h)。 本发明包括但不限定预设两个速度门限。
可替换地，所述基站还可以根据分类条件的组合对用户设备的状态进 行分类。 具体地， eNB根据 UE调度时所处层数和 UE调度时所配总层数为依据 对 UE状态进行分类。 例如， 当 UE调度时最大允许配对层数为 4时， UE 存在十种状态， 分别是： UE调度时所配总层数为 1被调度至层 1、 UE调度 时所配总层数为 2被调度至层 1、 UE调度时所配总层数为 2被调度至层 2、 UE调度时所配总层数为 3被调度至层 1、 UE调度时所配总层数为 3被调度 至层 2、 UE调度时所配总层数为 3被调度至层 3、 UE调度时所配总层数为 4 被调度至层 1、 UE调度时所配总层数为 4被调度至层 2、 UE调度时所配总 层数为 4被调度至层 3、 UE调度时所配总层数为 4被调度至层 4 , UE的状态 总分类数等于 10。 eNB对所述十个状态分别设置一个 OLLA值， 其中， eNB 可设置更多的 OLLA值， 但对每个 UE至少设置 10个 OLLA值。
1 02、 所述基站为所述用户设备对应的分类后的每一类状态分别配置 一个开环链路自适应调整值 0LLA值。
1 0 3、所述基站确定所述用户设备在当前信息传输过程中所处的状态， 并从所述每一类状态分别对应的 0LLA值中选择与所述用户设备当前所处 的状态对应的 0LLA值。
1 04、 所述基站根据与所述用户设备当前所处的状态对应的 0LLA值调 整调制编码策略 MCS值后， 修改所述用户设备当前所处的状态对应的 0LLA 值。
具体地，基站根据当前用户设备所处状态对应的 0LLA值来调整 MCS值， 然后向用户设备发送数据包； 然后基站根据接收到的所述数据包的确认 ACK/不确认 NACK反馈信息， 对 0LLA值进行更新； 最后基站将更新后的 0LLA 值保存以备下一次数据包的发送使用。
本实施例提供的方法通过分别获取用户设备所处的不同状态对应的 0LLA值，并根据与所述用户设备当前所处的状态对应的 0LLA值调整调制编 码策略 MCS值， 降低了获取到的 MCS值对应的 0LLA值的误差， 提高了通信系 统的传输性能。 本实施例提供一种开环链路自适应的调整装置， 如图 2所示， 所述装 置包括： 分类单元 2 1、 配置单元 2 2、 确定单元 2 3、 选择单元 24、 调整单元 25、 更新单元 2 6。
分类单元 2 1 ,可以用于对用户设备在信息传输过程中所处的状态进行 分类。
分类单元 2 1 , 具体可以用于根据所述用户设备的秩、 所述用户设备传 输过程中所处层数、 所述用户设备传输过程中所配置的总层数、 所述用户 设备在系统中的预设状态中的至少一种分类条件为所述用户设备在信息 传输过程中所处的状态进行分类。
分类单元 2 1 ,具体还可以用于根据所述用户设备秩的不同取值对所述 用户设备在信息传输过程中所处的状态进行分类。
分类单元 2 1 ,具体还可以用于根据所述用户设备被调度到的层数的不 同取值对所述用户设备在信息传输过程中所处的状态进行分类。
分类单元 2 1 ,具体还可以用于根据所述用户设备所配置的总层数的不 同取值对所述用户设备在信息传输过程中所处的状态进行分类。
分类单元 2 1 ,具体还可以用于当所述预设状态为所述用户设备在非线 性预编码通信系统中是否为求模状态时，将所述用户设备所处的状态分为 所述用户设备当前求模标识为求模和所述用户设备当前求模标识为非求 模两种状态。
分类单元 2 1 ,具体还可以用于当所述预设状态为所述用户设备移动速 度时，通过预设不同速度门限对所述用户设备在信息传输过程中所处的状 态进行分类。
配置单元 2 2 ,可以用于为所述用户设备对应的分类后的每一类状态分 别配置一个开环链路自适应调整值 OLL A值。
确定单元 2 3 ,可以用于确定所述用户设备在当前信息传输过程中所处 的状态。 选择单元 24 ,可以用于从所述每一类状态分别对应的 0LLA值中选择与 所述用户设备当前所处的状态对应的 OLL Α值。
调整单元 25, 可以用于根据与所述用户设备当前所处的状态对应的 OLL A值调整调制编码策略 MCS值。
更新单元 26,可以用于修改所述用户设备当前所处的状态对应的 0LLA 值。
本实施例提供的开环链路自适应的调整装置的实体可以为基站，如图 3所示， 所述基站包括： 中央处理器 31、 输入设备 32、 输出设备 33、 存储 器 34,所述输入设备 32、输出设备 33、存储器 34与所述中央处理器 31连接。
中央处理器 31具体可以包括： 分类单元 3101、 配置单元 3102、 确定单 元 3103、 选择单元 3104、 调整单元 3105、 更新单元 3106。
分类单元 3101,可以用于对用户设备在信息传输过程中所处的状态进 行分类。
分类单元 3101, 具体可以用于根据所述用户设备的秩、 所述用户设备 传输过程中所处层数、 所述用户设备传输过程中所配置的总层数、 所述用 户设备在系统中的预设状态中的至少一种分类条件为所述用户设备在信
, 传输过程中所处的状态进行分类。
分类单元 3101,具体还可以用于根据所述用户设备秩的不同取值对所 述用户设备在信息传输过程中所处的状态进行分类。
分类单元 3101,具体还可以用于根据所述用户设备被调度到的层数的 不同取值对所述用户设备在信息传输过程中所处的状态进行分类。
分类单元 3101,具体还可以用于根据所述用户设备所配置的总层数的 不同取值对所述用户设备在信息传输过程中所处的状态进行分类。
分类单元 3101,具体还可以用于当所述预设状态为所述用户设备在非 线性预编码通信系统中是否为求模状态时，将所述用户设备所处的状态分 为所述用户设备当前求模标识为求模和所述用户设备当前求模标识为非 求模两种状态。
分类单元 31 01 ,具体还可以用于当所述预设状态为所述用户设备移动 速度时，通过预设不同速度门限对所述用户设备在信息传输过程中所处的 状态进行分类。
配置单元 31 02 ,可以用于为所述用户设备对应的分类后的每一类状态 分别配置一个开环链路自适应调整值 0LLA值。
确定单元 31 0 3 ,可以用于确定所述用户设备在当前信息传输过程中所 处的状态。
选择单元 31 04 ,可以用于从所述每一类状态分别对应的 0LLA值中选择 与所述用户设备当前所处的状态对应的 0LLA值。
调整单元 31 05 ,可以用于根据与所述用户设备当前所处的状态对应的 0LLA值调整调制编码策略 MCS值。
更新单元 31 06 , 可以用于修改所述用户设备当前所处的状态对应的 0UA值。
本实施例提供的装置通过分别获取用户设备所处的不同状态对应的 0LLA值，并根据与所述用户设备当前所处的状态对应的 0LLA值调整调制编 码策略 MCS值， 降低了获取到的 MCS值对应的 0LLA值的误差， 提高了通信系 统的传输性能。
本发明实施例提供的开环链路自适应的调整装置可以实现上述提供 的方法实施例，具体功能实现请参见方法实施例中的说明，在此不再赘述。 本发明实施例提供的开环链路自适应的调整方法及装置可以适用于通信 系统领域， 但不仅限于此。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分 流程， 是可以通过计算机程序来指令相关的硬件来完成， 所述的程序可存 储于一计算机可读取存储介质中， 该程序在执行时， 可包括如上述各方法 的实施例的流程。 其中， 所述的存储介质可为磁碟、 光盘、 只读存储记忆 体 ( Read-Only Memory , ROM ) 或随机存^ ^己忆体 ( Random Access Memory , RAM ) 等。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不局 限于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可 轻易想到的变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发 明的保护范围应该以权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种开环链路自适应的调整方法， 其特征在于， 包括：
基站对用户设备在信息传输过程中所处的状态进行分类；
所述基站为所述用户设备对应的分类后的每一类状态分别配置一个开环链 路自适应调整值 0LLA值；
所述基站确定所述用户设备在当前信息传输过程中所处的状态， 并从所述 每一类状态分别对应的 0LLA值中选择与所述用户设备当前所处的状态对应的 0LLA值；
所述基站根据与所述用户设备当前所处的状态对应的 0LLA值调整调制编码 策略 MCS值后， 修改所述用户设备当前所处的状态对应的 0LLA值。
2、 根据权利要求 1所述的开环链路自适应的调整方法， 其特征在于， 所述 基站对用户设备在信息传输过程中所处的状态进行分类包括：
所述基站根据所述用户设备的秩、 所述用户设备传输过程中所处层数、 所 述用户设备传输过程中所配置的总层数、 所述用户设备在系统中的预设状态中 的至少一种分类条件为所述用户设备在信息传输过程中所处的状态进行分类。
3、 根据权利要求 2所述的开环链路自适应的调整方法， 其特征在于， 当所 述分类条件为所述用户设备的秩时， 所述基站对用户设备在信息传输过程中所 处的状态进行分类包括：
所述基站根据所述用户设备秩的不同取值对所述用户设备在信息传输过程 中所处的状态进行分类。
4、 根据权利要求 2所述的开环链路自适应的调整方法， 其特征在于， 当所 述分类条件为所述用户设备传输过程中所处层数时， 所述基站对用户设备在信 息传输过程中所处的状态进行分类包括：
所述基站根据所述用户设备被调度到的层数的不同取值对所述用户设备在 信息传输过程中所处的状态进行分类。
5、 根据权利要求 2所述的开环链路自适应的调整方法， 其特征在于， 当所 述分类条件为所述用户设备传输过程中所配置的总层数时， 所述基站对用户设 备在信息传输过程中所处的状态进行分类包括：
所述基站根据所述用户设备所配置的总层数的不同取值对所述用户设备在 信息传输过程中所处的状态进行分类。
6、 根据权利要求 2所述的开环链路自适应的调整方法， 其特征在于， 当所 述分类条件为所述用户设备在系统中的预设状态时， 所述基站对用户设备在信 息传输过程中所处的状态进行分类包括：
当所述预设状态为所述用户设备在非线性预编码通信系统中是否为求模状 态时， 所述基站将所述用户设备所处的状态分为所述用户设备当前求模标识为 求模和所述用户设备当前求模标识为非求模两种状态；
当所述预设状态为所述用户设备移动速度时， 所述基站通过预设不同速度 门限对所述用户设备在信息传输过程中所处的状态进行分类。
7、 一种开环链路自适应的调整装置， 其特征在于， 包括：
分类单元， 用于对用户设备在信息传输过程中所处的状态进行分类； 配置单元， 用于为所述用户设备对应的通过分类单元分类后的每一类状态 分别配置一个开环链路自适应调整值 0LLA值；
确定单元， 用于确定所述用户设备在当前信息传输过程中所处的状态； 选择单元， 用于从所述每一类状态分别对应的 0LLA值中选择与所述确定单 元确定的所述用户设备当前所处的状态对应的 OLL A值；
调整单元， 用于根据与所述用户设备当前所处的状态对应的所述选择单元 选择的 OLL A值调整调制编码策略 MC S值；
更新单元， 用于修改所述用户设备当前所处的状态对应的 0LLA值。
8、 根据权利要求 7所述的开环链路自适应的调整装置， 其特征在于， 所述分类单元， 具体用于根据所述用户设备的秩、 所述用户设备传输过程 中所处层数、 所述用户设备传输过程中所配置的总层数、 所述用户设备在系统 中的预设状态中的至少一种分类条件为所述用户设备在信息传输过程中所处的 状态进行分类。
9、 根据权利要求 8所述的开环链路自适应的调整装置， 其特征在于， 所述分类单元， 具体用于根据所述用户设备秩的不同取值对所述用户设备 在信息传输过程中所处的状态进行分类。
1 0、 根据权利要求 8所述的开环链路自适应的调整装置， 其特征在于， 所述分类单元， 具体用于根据所述用户设备被调度到的层数的不同取值对 所述用户设备在信息传输过程中所处的状态进行分类。
1 1、 根据权利要求 8所述的开环链路自适应的调整装置， 其特征在于， 所述分类单元， 具体用于根据所述用户设备所配置的总层数的不同取值对 所述用户设备在信息传输过程中所处的状态进行分类。
12、 根据权利要求 8所述的开环链路自适应的调整装置， 其特征在于， 所述分类单元， 具体用于当所述预设状态为所述用户设备在非线性预编码 通信系统中是否求模时， 将所述用户设备所处的状态分为所述用户设备当前求 模标识为求模和所述用户设备当前求模标识为非求模两种状态；
所述分类单元， 具体用于当所述预设状态为所述用户设备移动速度时， 通 过预设不同速度门限对所述用户设备在信息传输过程中所处的状态进行分类。
PCT/CN2013/073387 2012-08-15 2013-03-28 开环链路自适应的调整方法及装置 WO2014026482A1 (zh)

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