WO2010078681A1 - 一种在长期演进系统下资源测量上报的方法 - Google Patents

一种在长期演进系统下资源测量上报的方法 Download PDF

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Publication number
WO2010078681A1
WO2010078681A1 PCT/CN2008/073858 CN2008073858W WO2010078681A1 WO 2010078681 A1 WO2010078681 A1 WO 2010078681A1 CN 2008073858 W CN2008073858 W CN 2008073858W WO 2010078681 A1 WO2010078681 A1 WO 2010078681A1
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Prior art keywords
measurement
base station
resource
measurement configuration
source base
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PCT/CN2008/073858
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English (en)
French (fr)
Inventor
高音
和峰
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中兴通讯股份有限公司
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Publication date
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
Priority to US13/133,794 priority Critical patent/US8577386B2/en
Priority to RU2011130220/07A priority patent/RU2481732C2/ru
Priority to ES08879334T priority patent/ES2700050T3/es
Priority to EP08879334.4A priority patent/EP2381715B1/en
Priority to BRPI0823389-6A priority patent/BRPI0823389B1/pt
Priority to CN200880132424.6A priority patent/CN102257846B/zh
Priority to PCT/CN2008/073858 priority patent/WO2010078681A1/zh
Publication of WO2010078681A1 publication Critical patent/WO2010078681A1/zh
Priority to US14/044,103 priority patent/US8880091B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present invention relates to a wireless cellular communication system, and more particularly to a method for reporting resource measurement between base stations in a Long Term Evolution (LTE) mobile communication system.
  • LTE Long Term Evolution
  • the LTE (Long Term Evolution) network consists of E-UTRAN (Evolved UTRAN) and Evolved Packet Core (EPC), and its network is flat.
  • the EUTRAN includes a plurality of base station eNBs (Evolved NodeBs), and each eNB is connected through an X2 logical interface, and the eNB and the EPC are connected through an S1 logical interface.
  • One EPC can manage one or more eNBs, and one eNB can also be controlled by multiple EPCs, and one eNB can manage one or more cells.
  • the mutual notification of the current resource state information between the base stations is advantageous for performing load balancing between the base stations, so that the overall load of the network can achieve an optimization effect.
  • the resource status information mentioned herein may be one or more of a current hardware load, an S1 interface bandwidth load, and a PRB (Physical Resource Block) usage.
  • the source base station sends a RESOURCE STATUS REQUEST message to the destination base station, and the measurement request type cell included in the message is assigned an enumeration type, which may be a start or an end.
  • the message further includes measurement configuration information, such as a measurement reporting period, and a measurement quantity that needs to be measured (the measurement quantity is an enumerated type, and may include a hardware load)
  • a list of cells that need to be measured and reported including one or more cells, such as a cell global identifier).
  • the destination base station After receiving the resource status request message of the source base station, the destination base station sends a resource status failure response (RESOURCE STATUS FAILURE) to the source base station if the processing fails, and includes the failure reason.
  • RESUATUS FAILURE resource status failure response
  • a resource status success response (RESOURCE STATUS RESPONSE) is sent to the source base station.
  • the target base station reports the status information of the corresponding measurement quantity to the source base station by using a RESOURCE STATUS UPDATE message according to the measurement period, where the measurement report reports the cell and the current needs of the cell.
  • Measured resource status information For hardware load and S1 interface transport layer load (transmission bandwidth) resources, the measured report value can be expressed in coarse granularity, such as light load, normal, overload, heavy overload, etc. For PRB usage resources, It needs to be expressed in a relatively accurate form, such as the percentage used.
  • a resource status request may be required to report multiple resource states.
  • the source base station may request to modify the current measurement configuration according to the algorithm requirements, such as modifying the measurement reporting period and reducing Or increase the reported measurement volume, you can also request to stop some resource status measurement, but there is no corresponding implementation mechanism. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a method for reporting resource measurement in an LTE system, so that after the multiple resource state measurement reports are initiated, the base station can easily modify or stop any resource during the network running process. State measurement.
  • the present invention provides a method for reporting resource measurement in a long term evolution system.
  • the source base station encapsulates a resource status request message and sends it to a destination base station, and the target base station receives the resource status request message and processes the same. And if the processing succeeds, sending a resource status success response to the source base station, if the processing fails, the source base station sends a resource status failure response, and the source base station encapsulates at least the message type, the measurement request type, and the source base station in the resource status request message.
  • Identifier and measurement configuration information where:
  • the measurement request type is assigned an enumeration type, and the assignment value is one or more of a start, a modification, and a stop;
  • the measurement configuration information is measurement configuration information under the current measurement request type.
  • the above method may also have the following features:
  • the source base station encapsulates at least a measurement report type, a measurement object, and a measurement cell list in the measurement configuration information, where:
  • the measurement >3 ⁇ 4 type is a period measurement or an event measurement
  • the measurement object includes at least one or more of hardware load, transmission bandwidth, and physical resource block usage;
  • the measurement cell list includes a cell global identifier for uniquely identifying each cell. Further, the above method may also have the following features:
  • the source base station encapsulates one or more measurement lists in the measurement configuration information, and each of the measurement lists includes at least a measurement report type, a measurement object, and a measurement cell list, where: the measurement is >3 ⁇ 4 type is a cycle Measurement or event measurement;
  • the measurement object includes at least one or more of hardware load, transmission bandwidth, and physical resource block usage;
  • the measurement cell list includes a cell global identifier for uniquely identifying each cell. Further, the above method may also have the following features:
  • the source base station further allocates a measurement ID to the measurement configuration information in the measurement list, and encapsulates the measurement ID into a corresponding measurement list.
  • the above method may also have the following features:
  • the source base station When the measurement reporting type is a periodic measurement, the source base station further encapsulates a measurement reporting period in the measurement configuration information;
  • the source base station When the measurement object includes a transmission bandwidth or a physical resource block usage, the source base station also encapsulates the measurement reporting direction in the measurement configuration information.
  • the above method may also have the following features:
  • the source base station encapsulates a base station measurement configuration and/or a cell measurement configuration in the measurement configuration information, where:
  • the base station measurement configuration includes a hardware resource measurement configuration and/or a transport layer resource measurement configuration; and the cell measurement configuration includes a transport layer resource measurement configuration and/or a physical radio resource measurement configuration.
  • the above method may also have the following features:
  • the hardware resource measurement configuration and the transport layer resource measurement configuration include at least a measurement reporting type and a measurement reporting direction;
  • the transport layer resource measurement configuration and the physical radio resource measurement configuration include one or more measurement cell lists, where the measurement cell list includes at least one element for uniquely identifying each cell.
  • the measurement reporting type is a periodic measurement or an event measurement. If the measurement reporting type is a periodic measurement, the measurement configuration further includes a measurement reporting period.
  • the above method may also have the following features:
  • the source base station further allocates a measurement ID to one or more of the hardware resource measurement configuration, the transport layer resource measurement configuration, the transport layer resource measurement configuration, and the physical radio resource measurement configuration, and The measurement ID is encapsulated into a corresponding measurement configuration.
  • the above method may also have the following features:
  • the destination base station encapsulates the waiting time when the resource status failure response message is encapsulated, and then sends the encapsulated resource status failure response message to the source base station;
  • the source base station After receiving the resource status failure response message sent by the target base station, the source base station performs timing on the waiting time in the resource status failure response message, and retransmits the resource status request to the target base station when the time is up. Message.
  • the above method may also have the following features:
  • the target base station When the target base station encapsulates the resource status success response message, constructs the failed measurement information according to the parameter encapsulated by the measurement configuration information in the resource status request message received by the target base station, and encapsulates the status information into the resource status. In the response message, it is then sent to the source base station.
  • the above method may also have the following features:
  • the source base station After the source base station sends a resource status request message to the target base station, the source base station further encapsulates a measurement stop message, where the measurement stop message includes at least a message type and a measurement stop list, and the measurement stop list includes the resource status.
  • the measurement ID in the measurement configuration in the request message;
  • the destination base station After receiving the measurement stop message, the destination base station locally searches for the measurement configuration information corresponding to the measurement ID according to the measurement ID in the measurement stop message, and stops the measurement report according to the found measurement configuration information.
  • the above method may also have the following features:
  • the target base station processes the resource status request message, if it is determined that the measurement request type in the resource status request message is stopped and the measurement configuration information does not exist, the destination The base station stops all resource state measurements it is currently performing.
  • the method for reporting the resource measurement in the LTE system enables the base station to easily modify or stop any resource state measurement during the network running process after initiating the reporting of multiple resource state measurements.
  • Reporting resource status measurement between base stations is more flexible and convenient, effectively reducing the number of information exchanges between base stations and avoiding network load caused by unnecessary information interaction.
  • FIG. 1 is a schematic flowchart of resource measurement reporting processing between a source base station and a destination base station.
  • FIG. 2 is a structural diagram of a resource status request message according to an embodiment of the present invention.
  • FIG. 3 is a structural diagram of a first measurement configuration information according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of a second measurement configuration information according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram of a third measurement configuration information according to an embodiment of the present invention.
  • FIG. 6 is a structural diagram of a fourth measurement configuration information according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of a resource status failure response message according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of a resource status success response message according to an embodiment of the present invention.
  • FIG. 9 is a structural diagram of a measurement stop message according to an embodiment of the present invention.
  • the present invention provides a method for reporting resource measurement in an LTE system, which can modify the resource status request message, so that the measurement configuration can be modified during the network operation between the base stations, so that the resource status measurement reporting between the base stations is more flexible. Conveniently, it helps the network load between the base stations to achieve resource state interaction and avoid unnecessary information interaction.
  • FIG. 1 shows a schematic diagram of information interaction between a source base station and a destination base station, and includes the following steps:
  • Step S201 The source base station encapsulates a resource status request message, and sends the message to the target base station.
  • Step S202 The target base station performs processing after receiving the resource status request message, and if the processing fails, Sending a resource status failure response to the source base station; if the processing is successful, proceeding to step S203;
  • Step S203 The target base station sends a resource status success response to the source base station.
  • the following describes in detail how the source base station encapsulates the resource status request message and how the destination base station encapsulates the response message according to the resource status request message sent by the source base station.
  • the resource status request message includes at least a message type, a measurement request type, a source base station global identifier, and measurement configuration information. among them:
  • the message type refers to the type of the message.
  • the type is a resource status request.
  • the measurement request type refers to a measurement report type that the message requests to perform, and the assignment value is an enumeration type, including one or more of start, stop, and modification.
  • the source base station global identifier is used to uniquely identify the source base station.
  • the measurement configuration information includes configuration information that requests the target base station to perform measurement reporting.
  • the resource status request message may further include a destination base station identifier for uniquely identifying the target base station.
  • the figure shows a first measurement configuration information structure of an embodiment of the present invention.
  • the measurement configuration information includes at least a measurement report type, a measurement object, and a measurement target cell list, where: the measurement report type may be a period measurement or an event measurement. If the measurement report type is a periodic measurement, the measurement configuration information shown in FIG. 3 should also include a reporting period, and the reporting period may be in milliseconds, seconds, minutes, or hours as the time granularity.
  • the measurement object which is assigned an enumerated type, may include at least one or more of a hardware load, an S1 interface transport layer load (transmission bandwidth), and a PRB usage. Since there is a resource direction problem in the measurement of the transmission bandwidth, when the measurement object includes the transmission bandwidth, the measurement configuration information shown in FIG. 3 should also include the transmission bandwidth measurement reporting direction. Since the measurement of the PRB usage also has a resource direction problem, when the measurement object includes the PRB usage, the measurement configuration information shown in FIG. 3 should also include the PRB measurement reporting direction.
  • the transmission bandwidth measurement reporting direction or The value of the PRB measurement reporting direction is an enumerated type, which can be uplink, downlink, or uplink and downlink.
  • the measurement destination cell list may include one or more destination cells, where each destination cell corresponds to a cell global identifier for uniquely identifying the target cell.
  • FIG. 1 when the measurement request type is stopped and the measurement configuration information does not exist, it can be used to indicate that all current resource state measurements of the target base station are stopped.
  • the measurement configuration information includes a base station measurement configuration and/or a cell measurement configuration, where:
  • the base station measurement configuration includes a hardware resource measurement configuration and/or a transport layer resource measurement configuration.
  • the hardware resource measurement configuration includes at least a measurement report type and a measurement report direction.
  • the measurement reporting type is a periodic measurement or an event measurement. If the measurement reporting type is a periodic measurement, the measurement configuration further includes a measurement reporting period.
  • the source base station may further allocate a measurement ID for the hardware resource measurement configuration, and encapsulate the measurement ID into the hardware resource measurement configuration.
  • the measurement ID corresponds to the hardware resource measurement configuration (the measurement reporting type of the hardware resource, the measurement reporting period, the resource measurement, and the " ⁇ direction").
  • the transport layer resource measurement configuration includes at least the measurement report type and the measurement report direction.
  • the measurement reporting type is a periodic measurement or an event measurement. If the measurement reporting type is a periodic measurement, the measurement configuration further includes a measurement reporting period.
  • the source base station may further allocate a measurement ID for the transport layer resource measurement configuration, and encapsulate the measurement ID into the transport layer resource measurement configuration.
  • the measurement ID corresponds to the transport layer resource measurement configuration (measurement on the transport layer resource > 3 ⁇ 4 type, measurement upper period, resource measurement > 3 ⁇ 4 direction, etc.).
  • the cell measurement configuration includes a transport layer resource measurement configuration and/or a physical radio resource measurement configuration: the physical radio resource measurement configuration may include one or more measurement lists, and each measurement list includes at least a cell global identifier for uniquely identifying the target cell. Symbol, measurement report type, and measurement reporting direction.
  • the measurement reporting type is a periodic measurement or an event measurement. If the measurement reporting type is a periodic measurement, the measurement configuration further includes a measurement reporting period.
  • the source base station may further allocate a measurement ID to the measurement configuration in the measurement list, and encapsulate the measurement ID into a corresponding measurement list.
  • the measurement ID and the physical radio resource measurement configuration in the measurement list (the measurement type of the physical radio resource, the measurement reporting period, and the resource measurement reporting direction) Etc.).
  • the measurement configuration of the transport layer resource may include one or more measurement lists, and each measurement list includes at least a cell global identifier, a measurement report type, and a measurement reporting direction for uniquely identifying the target cell.
  • the measurement reporting type is a periodic measurement or an event measurement. If the measurement reporting type is a periodic measurement, the measurement configuration further includes a measurement reporting period.
  • the source base station may also separately assign a measurement ID to the measurement configuration in the measurement list, and encapsulate the measurement ID into a corresponding measurement list.
  • the measurement ID corresponds to the measurement layer resource measurement configuration (the measurement reporting type of the transport layer resource, the measurement reporting period, the resource measurement reporting direction, and the like) in the measurement list.
  • the definition of the >3 ⁇ 4 type, the measurement upper period, and the upper direction of the resource measurement described in FIG. 4 are as described above in FIG. 3, and are not described herein again.
  • the measurement ID is added in FIG. 4, which is advantageous in that if the target base station saves the measurement configuration information corresponding to the measurement ID, when the source base station sends the same measurement configuration to the target base station again, the same measurement configuration may be sent only.
  • the measurement ID is OK.
  • FIG. 3 and FIG. 4 are applicable to the measurement configuration information corresponding to the current measurement request type by default when the one of the measurement request types shown in FIG. 2 is started, modified, or stopped. . Specifically, if the current measurement request type is the start, it indicates that the target base station needs to start the related measurement in the measurement configuration information; if the current measurement request type is modified, it indicates that the target base station needs to modify the purpose according to the measurement configuration information.
  • the measurement configuration currently performed by the base station, and performing measurement reporting according to the modified measurement configuration if the current measurement request type is ended, it indicates that the target base station needs to end the relevant measurement in the measurement configuration information, or when the measurement request type is ended, and there is no When any configuration information is measured, it indicates that the target base station needs to stop all current resource state measurements.
  • the measurement configuration information includes one or more measurement lists, and each measurement list may be a start measurement list, a modification measurement list, or a stop measurement list.
  • the start measurement list includes measurement configuration information corresponding to the start measurement request type
  • the modified measurement list includes measurement configuration information corresponding to the modified measurement request type
  • the stop measurement list includes the measurement configuration corresponding to the stop measurement request type.
  • Information includes at least a measurement report type, a measurement object, and a measurement target cell list. If the measurement report type in a measurement list is a periodic measurement, the measurement configuration information shown in FIG. 5 should also include a reporting period; If the measurement object in the list contains transmission bandwidth or PRB usage, the measurement configuration information shown in Figure 5 should also include the measurement reporting direction.
  • the definition of the measurement report type, the measurement object, and the measurement target cell list in FIG. 5 is the same as the definition of the measurement report type, the measurement object, and the measurement target cell list shown in FIG. 3, and details are not described herein again.
  • the measurement configuration information structure in FIG. 5 differs from FIG. 3 and FIG. 4 in that the measurement configuration information in FIG. 5 is managed according to the measurement list, and the measurement configuration information in different measurement lists may be different, and different measurement lists are also Can correspond to different measurement request types (start, modify or stop). Therefore, with respect to FIG. 3 and FIG. 4, the measurement configuration information structure shown in FIG. 5 can carry multiple sets of different measurement configuration information through multiple measurement lists, and include configuration information under different measurement request types in the same resource status request message. This greatly reduces the number of times the source base station sends a resource status request message to the destination base station.
  • the measurement configuration information includes one or more measurement lists, and each measurement list may be a start measurement list, a modification measurement list, or a stop measurement list.
  • Each measurement list includes at least a measurement report type, a measurement object, and a measurement target cell list. If the measurement report type in a measurement list is a periodic measurement, the measurement configuration information shown in FIG. 6 should also include a reporting period; if the measurement object in a measurement list includes a transmission bandwidth or PRB usage, FIG. 6 The measurement configuration information should also include the measurement reporting direction.
  • the measurement configuration information structure in FIG. 6 is different from that in FIG. 5 in that the source base station further allocates a measurement ID to the measurement configuration information in the measurement list, and encapsulates the measurement ID into the measurement.
  • the measurement ID corresponds to the measurement configuration information in the measurement list in which it is located.
  • FIG. 5 and FIG. 6 use the measurement list to manage the measurement configuration information, it is applicable to the case where the assignment of the measurement request type shown in FIG. 2 is one or more of the start, modification, or stop.
  • the target base station After receiving the resource status request message sent by the source base station, the target base station performs processing. If the processing fails, the resource status failure response message is generated and sent to the source base station. If the processing succeeds, the resource status success response message is generated and sent to the source base station.
  • this figure shows a resource status failure response message in an embodiment of the present invention.
  • the message can contain the message type, the reason for the failure, and the failure wait time.
  • the source base station After receiving the failure response message sent by the destination base station, the source base station periodically delays the failure waiting time in the failure response message, and may send the resource status request message to the destination base station again when the timing is up.
  • the figure shows a resource status success response message in accordance with an embodiment of the present invention.
  • the message can contain the message type, the base station global identifier, and the failed measurement information.
  • the destination base station encapsulates the failed measurement information according to the structure of the measurement configuration information in the resource status request message received by the destination. Specifically, for example, the measurement configuration information in the resource status request message received by the target base station is as shown in FIG. 3, and the failed measurement information in the success response message encapsulated by the destination base station also includes the measurement report type.
  • the reporting period, the measurement object, the resource reporting direction, and the cell list information of the measurement failure, the cell list information includes the cell global identifier; for example, the measurement configuration information in the resource status request message received by the target base station is as shown in FIG.
  • the failed measurement information in the success response message encapsulated by the destination base station correspondingly includes one or more measurement failure lists, and each measurement failure list includes a measurement report type, a reporting period, a measurement object, and a resource reporting direction.
  • the failed cell list information includes a cell global identifier in the cell list information.
  • the measurement configuration shown in FIG. 4 and FIG. 6 includes the measurement ID allocated by the source base station for the measurement configuration information. Therefore, when the target base station encapsulates the failed measurement information, it may also only encapsulate the failed measurement information. After receiving the resource status success response message, the source base station may obtain the failed measurement information according to the measurement ID corresponding to the failed measurement information and the locally stored measurement configuration information corresponding to the measurement ID.
  • the measurement ID is included in the measurement configuration information shown in FIG. 4 and FIG. 6, and as described above,
  • the advantage of the measurement ID is that if the destination base station saves the measurement configuration information corresponding to the measurement ID, when the source base station sends the same measurement configuration to the target base station again, the measurement ID corresponding to the same measurement configuration may be sent only. . Therefore, the embodiment of the present invention further provides a preferred measurement stop message structure.
  • the measurement stop message includes a message type and a measurement stop list, where the measurement stop list includes a measurement to stop the measurement. ID.
  • the target base station After receiving the measurement stop message, the target base station searches for the measurement configuration corresponding to the locally saved measurement ID according to the measurement ID in the measurement stop message, and stops the measurement according to the found measurement configuration.
  • the measurement stop message may further include a destination base station identifier for uniquely identifying the target base station.
  • the present invention provides a method for reporting resource measurements in an LTE system.
  • a source base station encapsulates a resource state measurement request message
  • the source base station adds a modification type to the measurement request type, so that the base station can implement the reporting of multiple resource state measurements.
  • the measurement configuration can be easily modified to reduce the number of information exchanges between the base stations.
  • the measurement list can be used to manage the measurement configuration information, and multiple measurement lists can be carried through multiple measurement lists.
  • the measurement list may also correspond to different measurement request types, and carry more measurement configuration information, thereby effectively reducing the number of information exchanges between the base stations; assigning a corresponding measurement ID to the measurement configuration information, so only one measurement is included in the measurement stop message.
  • the measurement ID can be used to stop the measurement.

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Description

一种在长期演进系统下资源测量上报的方法
技术领域
本发明涉及无线蜂窝通信系统， 尤其涉及长期演进（LTE )移动通信系 统中， 用于基站间资源测量上报的方法。 背景技术
LTE ( Long Term Evolution , 长期演进） 网络由 E-UTRAN(Evolved UTRAN, 演进通用陆地无线接入网络)和演进分组交换中心 EPC ( Evolved Packet Core )组成， 其网络呈扁平化。 其中 EUTRAN 包含多个基站 eNB ( Evolved NodeB ) , 各 eNB之间通过 X2逻辑接口连接 , eNB与 EPC通过 S1逻辑接口连接。 一个 EPC可以管理一个或多个 eNB, —个 eNB也可以受 控于多个 EPC, —个 eNB可以管理一个或多个小区。
在上述 LTE系统中， 基站之间将当前资源状态信息进行互相通知有利于 进行基站间负荷均衡， 从而使得网络整体负荷能够达到最优化效果。 这里所 说的资源状态信息， 可以是当前硬件负荷、 S1接口带宽负荷、 PRB ( Physical Resource Block, 物理资源块）使用情况中的一种或者多种。 源基站向目的基 站发送资源状态请求（ RESOURCE STATUS REQUEST ) 消息， 该消息中包 含的测量请求类型信元的赋值为枚举类型， 其可以为开始或者结束。 如果一 资源状态请求消息中包含的测量请求类型为开始时， 该消息中还包含测量配 置信息， 比如测量上报周期、 需要进行测量的测量量（所述测量量为枚举类 型， 可以包含硬件负荷、 S1接口传输层负荷（传输带宽）和 PRB使用情况中 的一种或者多种。 ）、 需要进行测量上报的小区列表（包括 1个或多个小区， 比如小区全局标识符） 。 当目的基站接收到源基站的资源状态请求消息后， 若处理失败给源基站发送资源状态失败响应 （ RESOURCE STATUS FAILURE ) , 其中包含失败原因。 若处理成功， 则给源基站发送资源状态成 功响应（RESOURCE STATUS RESPONSE )。 测量启动后， 目标基站根据测 量周期通过资源状态更新（RESOURCE STATUS UPDATE )消息将对应测量 量的状态信息上报给源基站， 其中包含测量上报的小区， 及该小区当前需要 测量的资源状态信息， 对于硬件负荷、 S1接口传输层负荷（传输带宽） 资源 来说， 测量上报值可用粗粒度来表示， 比如轻载、 正常、 过载、 重过载等， 对于 PRB使用情况资源， 则需要用相对准确的形式来表示， 比如用已使用的 百分比来表示。
由于目前需要上报的资源具有多样性， 在一次资源状态请求中可以要求 上报多个资源状态， 而在网络运行过程中， 源基站根据算法需求可以要求修 改当前测量配置， 比如修改测量上报周期、 减少或者增加上报测量量， 也可 以要求停止部分资源状态测量， 但是目前还没有相应的实现机制。 发明内容
本发明要解决的技术问题是提供一种在 LTE 系统下资源测量上报的方 法， 使得基站间能够实现在发起多个资源状态测量上报后， 在网络运行过程 中可以方便地修改或者停止任意一资源状态测量。
为解决上述技术问题， 本发明提出一种在长期演进系统下资源测量上报 的方法， 源基站封装资源状态请求消息并将其发送给目的基站， 目的基站接 收到所述资源状态请求消息后进行处理， 如果处理成功， 则向源基站发送资 源状态成功响应， 如果处理失败， 则源基站发送资源状态失败响应， 所述源 基站在资源状态请求消息中至少封装消息类型、 测量请求类型、 源基站全局 标识符和测量配置信息， 其中：
所述测量请求类型的赋值为枚举类型， 其赋值为开始、 修改和停止中的 一种或者多种；
所述测量配置信息为当前测量请求类型下的测量配置信息。
进一步地， 上述方法还可具有以下特点：
所述源基站在所述测量配置信息中至少封装测量上报类型、 测量对象和 测量小区列表， 其中：
所述测量上 >¾类型为周期测量或者事件测量；
所述测量对象至少包含硬件负荷、 传输带宽、 物理资源块使用情况中的 一种或者多种； 所述测量小区列表中包含用于唯一标识每个小区的小区全局标识符。 进一步地， 上述方法还可具有以下特点：
所述源基站在所述测量配置信息中封装一个或者多个测量列表， 每一所 述测量列表中至少包含测量上报类型、 测量对象和测量小区列表， 其中： 所述测量上 >¾类型为周期测量或者事件测量；
所述测量对象至少包含硬件负荷、 传输带宽、 物理资源块使用情况中的 一种或者多种；
所述测量小区列表中包含用于唯一标识每个小区的小区全局标识符。 进一步地， 上述方法还可具有以下特点：
所述源基站还分别为所述测量列表中的测量配置信息分配测量 ID, 并将 所述测量 ID封装到对应的测量列表中。
进一步地， 上述方法还可具有以下特点：
在所述测量上报类型为周期测量时， 所述源基站还在所述测量配置信息 中封装测量上报周期；
在所述测量对象中包含传输带宽或者物理资源块使用情况时， 所述源基 站还在所述测量配置信息中封装测量上报方向。
进一步地， 上述方法还可具有以下特点：
所述源基站在所述测量配置信息中封装基站测量配置和 /或小区测量配 置， 其中：
所述基站测量配置中包含硬件资源测量配置和 /或传输层资源测量配置； 所述小区测量配置中包含传输层资源测量配置和 /或物理无线资源测量 配置。
进一步地， 上述方法还可具有以下特点：
所述硬件资源测量配置和所述传输层资源测量配置中至少包含测量上报 类型和测量上报方向；
所述传输层资源测量配置和所述物理无线资源测量配置中包含一个或者 多个测量小区列表， 所述测量小区列表中至少包含用于唯一标识每个小区的 小区全局标识符、 测量上 类型和测量上 方向；
所述测量上报类型为周期测量或者事件测量， 如果所述测量上报类型为 周期测量， 则所述测量配置中还包含测量上报周期。
进一步地， 上述方法还可具有以下特点：
所述源基站还为所述硬件资源测量配置、 所述传输层资源测量配置、 所 述传输层资源测量配置和所述物理无线资源测量配置中的一种或者多种分配 测量 ID, 并将所述测量 ID封装到对应的测量配置中。
进一步地， 上述方法还可具有以下特点：
所述目的基站在封装资源状态失败响应消息时， 还封装了等待时间， 然 后将封装好的资源状态失败响应消息发送给所述源基站；
所述源基站收到目的基站发送来的所述资源状态失败响应消息后， 对所 述资源状态失败响应消息中的等待时间进行定时， 在定时到时时， 重新向所 述目的基站发送资源状态请求消息。
进一步地， 上述方法还可具有以下特点：
所述目的基站在封装资源状态成功响应消息时， 根据所述目的基站接收 到的资源状态请求消息中的测量配置信息所封装的参数， 构造失败的测量信 息并将其封装到所述资源状态成功响应消息中， 然后发送给所述源基站。
进一步地， 上述方法还可具有以下特点：
所述源基站在向所述目的基站发送一资源状态请求消息后， 还封装一测 量停止消息， 所述测量停止消息中至少包含消息类型和测量停止列表， 所述 测量停止列表中包含该资源状态请求消息中测量配置中测量 ID;
所述目的基站在接收到所述测量停止消息后， 根据所述测量停止消息中 的测量 ID在本地查找该测量 ID对应的测量配置信息， 按照查找到的测量配 置信息停止测量上报。
进一步地， 上述方法还可具有以下特点：
所述目的基站在对所述资源状态请求消息进行处理时， 如判断所述资源 状态请求消息中的测量请求类型为停止且测量配置信息不存在时， 所述目的 基站停止其当前进行的所有资源状态测量。
本发明所述的一种在 LTE系统下资源测量上报的方法， 使得基站间能够 实现在发起多个资源状态测量上报后， 在网络运行过程中可以方便地修改或 者停止任意一资源状态测量，使得基站间资源状态测量上报更为灵活和方便， 有效地减少了基站间信息交互的次数， 避免不必要的信息交互而产生的网络 负荷。 附图概述
图 1是源基站与目的基站间进行资源测量上报处理的流程示意图。
图 2是本发明实施例一种资源状态请求消息结构图。
图 3是本发明实施例第一种测量配置信息结构图。
图 4是本发明实施例第二种测量配置信息结构图。
图 5是本发明实施例第三种测量配置信息结构图。
图 6是本发明实施例第四种测量配置信息结构图。
图 7是本发明实施例资源状态失败响应消息结构图。
图 8是本发明实施例资源状态成功响应消息结构图。
图 9是本发明实施例一种测量停止消息结构图。
本发明的较佳实施方式
本发明提出一种在 LTE系统下资源测量上报的方法， 其通过修改资源状 态请求消息， 使得基站间能够实现在网络运行过程中可以修改测量配置， 从 而使得基站间资源状态测量上报更为灵活和方便， 有助于基站间实现资源状 态交互以及避免不必要的信息交互而产生的网络负荷。
参考图 1 , 该图示出了源基站与目的基站间信息交互示意图， 包含如下 步骤：
步骤 S201 : 源基站封装资源状态请求消息， 发送给目的基站；
步骤 S202: 目的基站接收到资源状态请求消息后进行处理，如处理失败， 则向源基站发送资源状态失败响应； 如处理成功， 则进入步骤 S203;
步骤 S203: 目的基站向源基站发送资源状态成功响应。
下面将以实施例来详细说明源基站如何封装资源状态请求消息以及目的 基站如何根据源基站发送来的资源状态请求消息封装应答消息。
参考图 2 , 该图示出了本发明实施例一种资源状态请求消息结构图。 所 述资源状态请求消息中至少包含消息类型、 测量请求类型、 源基站全局标识 符和测量配置信息。 其中：
所述消息类型， 是指该消息的类型， 对图 1所示消息来说， 其类型为资 源状态请求。
所述测量请求类型， 是指该消息请求执行的测量上报类型， 其赋值为枚 举类型， 包含开始、 停止、 修改中的一种或者多种。
所述源基站全局标识符， 用以唯一标识源基站。
所述测量配置信息， 包含请求目的基站执行测量上报的配置信息。
所述资源状态请求消息中还可以包含用于唯一标识目的基站的目的基站 标识符。
下面结合图 3、 4、 5、 6来详细说明图 2中所述测量配置信息具体封装的 参数。
参考图 3 , 该图示出了本发明实施例第一种测量配置信息结构。 该测量 配置信息中至少包含测量上报类型、 测量对象和测量目的小区列表， 其中： 所述测量上报类型， 可以为周期测量或者事件测量。 如果测量上报类型 为周期测量， 则图 3所示测量配置信息中还应包含上报周期， 所述上报周期 可以以毫秒、 秒、 分钟或小时为时间粒度。
所述测量对象， 其赋值为枚举类型， 可以至少包含硬件负荷、 S1接口传 输层负荷（传输带宽） 、 PRB使用情况中的一种或者多种。 由于对传输带宽 的测量存在资源方向问题， 因此当测量对象中包含传输带宽时， 图 3所示测 量配置信息中还应包含传输带宽测量上报方向。 由于对 PRB使用情况测量也 存在资源方向问题， 因此当测量对象中包含 PRB使用情况时， 图 3所示测量 配置信息中还应包含 PRB 测量上报方向。 所述传输带宽测量上报方向或者 PRB测量上报方向的赋值为枚举类型， 可以是上行、 下行或者上下行。
所述测量目的小区列表， 其中可以包含一个或者多个目的小区， 其中每 一目的小区对应一个用以唯一标识该目的小区的小区全局标识符。
结合图 1、图 2和图 3 ,当测量请求类型为停止且测量配置信息不存在时， 可以用来表示停止目的基站当前所有资源状态测量。
参考图 4, 该图示出了本发明实施例第二种测量配置信息结构。 所述测 量配置信息包含基站测量配置和 /或小区测量配置， 其中：
基站测量配置下包含硬件资源测量配置和 /或传输层资源测量配置： 硬件资源测量配置中至少包括测量上报类型和测量上报方向。 所述测量 上报类型为周期测量或者事件测量， 如果所述测量上报类型为周期测量， 则 所述测量配置中还包含测量上报周期。 较佳地， 源基站还可以为所述硬件资 源测量配置分配测量 ID, 并将该测量 ID封装到所述硬件资源测量配置中。 所述测量 ID与所述硬件资源测量配置（硬件资源的测量上报类型、 测量上报 周期、 资源测量上 "^方向等）相对应。
传输层资源测量配置至少包括测量上报类型和测量上报方向。 所述测量 上报类型为周期测量或者事件测量， 如果所述测量上报类型为周期测量， 则 所述测量配置中还包含测量上报周期。 较佳地， 源基站还可以为所述传输层 资源测量配置分配测量 ID, 并将该测量 ID封装到所述传输层资源测量配置 中。 所述测量 ID与所述传输层资源测量配置 （传输层资源的测量上>¾类型、 测量上 周期、 资源测量上 >¾方向等）相对应。
小区测量配置下包含传输层资源测量配置和 /或物理无线资源测量配置： 物理无线资源测量配置可以包含一个或者多个测量列表， 每一测量列表 中至少包含用以唯一标识目的小区的小区全局标识符、 测量上报类型和测量 上报方向。 所述测量上报类型为周期测量或者事件测量， 如果所述测量上报 类型为周期测量， 则所述测量配置中还包含测量上报周期。 较佳地， 源基站 还可以分别为所述测量列表中的测量配置分配测量 ID, 并将所述测量 ID封 装到对应的测量列表中。所述测量 ID与其所在测量列表中的物理无线资源测 量配置 （物理无线资源的测量上报类型、 测量上报周期、 资源测量上报方向 等）相对应。
传输层资源的测量配置可以包含一个或者多个测量列表， 每一测量列表 中至少包含用以唯一标识目的小区的小区全局标识符、 测量上报类型和测量 上报方向。 所述测量上报类型为周期测量或者事件测量， 如果所述测量上报 类型为周期测量， 则所述测量配置中还包含测量上报周期。 较佳地， 源基站 还可以分别为所述测量列表中的测量配置分配测量 ID, 并将所述测量 ID封 装到对应的测量列表中。所述测量 ID与其所在测量列表中的传输层资源测量 配置 （传输层资源的测量上报类型、 测量上报周期、 资源测量上报方向等） 相对应。
图 4中所述的测量上>¾类型、 测量上 周期、 资源测量上 方向的定义 如上述图 3中所述， 这里不再赘述。 图 4中增加了测量 ID, 其好处在于， 如 果目的基站保存了该测量 ID对应的测量配置信息，那么源基站再次向该目的 基站发送相同的测量配置时， 可以仅仅发送该相同的测量配置对应的测量 ID 即可。
上述图 3和图 4适用于在图 2所示测量请求类型的赋值为开始、 修改或 者停止其中之一时， 图 3或者图 4所述的测量配置信息默认为当前测量请求 类型对应的测量配置信息。 具体来说， 如果当前测量请求类型为开始， 则表 示需要目的基站开始所述测量配置信息中的相关测量； 如果当前测量请求类 型为修改， 则表示需要目的基站根据所述测量配置信息修改该目的基站当前 执行的测量配置， 并按照修改后的测量配置执行测量上报； 如果当前测量请 求类型为结束， 则表示需要目的基站结束测量配置信息中的相关测量， 或者 当测量请求类型为结束， 而没有任何测量配置信息时， 则表示需要目的基站 停止当前所有资源状态测量。
参考图 5 , 该图示出了本发明实施例第三种测量配置信息结构。 该测量 配置信息中包含一个或多个测量列表， 每个测量列表可以为开始测量列表、 修改测量列表或者停止测量列表。 其中， 开始测量列表中包含与开始测量请 求类型对应的测量配置信息， 修改测量列表中包含与修改测量请求类型对应 的测量配置信息， 停止测量列表中包含与停止测量请求类型对应的测量配置 信息。 每个测量列表中至少包含测量上报类型、 测量对象和测量目的小区列 表， 如果一测量列表中的测量上报类型为周期测量， 则图 5所示测量配置信 息中还应包含上报周期； 如果一测量列表中的测量对象中包含传输带宽或者 PRB使用情况， 则图 5所示测量配置信息中还应包含测量上报方向。
图 5中所述测量上报类型、 所述测量对象和所述测量目的小区列表的定 义和上述图 3所示测量上报类型、测量对象和测量目的小区列表的定义相同， 这里不再赘述。 图 5中的测量配置信息结构与图 3和图 4的区别在于， 图 5 中的测量配置信息是按照测量列表来管理的， 不同的测量列表中的测量配置 信息可以不同， 不同的测量列表还可以对应于不同测量请求类型 （开始、 修 改或者停止） 。 因此， 相对于图 3和图 4, 图 5所示测量配置信息结构能够 通过多个测量列表携带多组不同的测量配置信息， 而且在同一资源状态请求 消息中包含不同测量请求类型下的配置信息， 这大大减少了源基站向目的基 站发送资源状态请求消息的个数。
结合图 1、 图 2和图 5, 当测量请求类型为停止且测量配置信息中测量列 表个数为 0时， 可以用来表示停止目的基站当前所有资源状态测量。
参考图 6, 该图示出了本发明实施例第四种测量配置信息结构。 该测量 配置信息中包含一个或多个测量列表， 每个测量列表可以为开始测量列表、 修改测量列表或者停止测量列表。 其中， 每个测量列表中至少包含测量上报 类型、 测量对象和测量目的小区列表。 如果一测量列表中的测量上报类型为 周期测量， 则图 6所示测量配置信息中还应包含上报周期； 如果一测量列表 中的测量对象中包含传输带宽或者 PRB使用情况， 则图 6所示测量配置信息 中还应包含测量上报方向。
对比参考图 6和图 5, 可知， 图 6中的测量配置信息结构与图 5的区别 在于， 源基站还为测量列表中的测量配置信息分配一测量 ID, 并将该测量 ID 封装到该测量列中。 该测量 ID与其所在测量列表中的测量配置信息相对应。
结合图 1、 图 2和图 6, 当测量请求类型为停止且测量配置信息中测量列 表个数为 0时， 可以用来表示停止目的基站当前所有资源状态测量。
由于上述图 5和图 6釆用测量列表来管理测量配置信息， 因此适用于在 图 2所示测量请求类型的赋值为开始、修改或者停止中一种或者多种的情况。 目的基站接收到源基站发送来的资源状态请求消息后， 进行处理， 如果 处理失败则生成资源状态失败响应消息， 发送给源基站； 如果处理成功则生 成资源状态成功响应消息， 发送给源基站。 下面将详细介绍目的基站如何封 装资源状态失败响应消息以及资源状态成功响应消息：
参考图 7 , 该图示出了本发明实施例资源状态失败响应消息。 该消息中 可以包含消息类型、 失败原因， 以及失败等待时间。 源基站在收到目的基站 发送来的该失败响应消息后，对该失败响应消息中的失败等待时间进行定时， 在定时到时时可再次向所述目的基站发送该资源状态请求消息。
参考图 8, 该图示出了本发明实施例资源状态成功响应消息。 该消息中 可以包含消息类型、 基站全局标识符， 以及失败的测量信息。 其中， 目的基 站是根据其收到的资源状态请求消息中测量配置信息的结构来封装所述失败 的测量信息的。 具体来说， 比如目的基站收到的资源状态请求消息中测量配 置信息如图 3所示， 则该目的基站封装出的成功响应消息中的所述失败的测 量信息中相应地也包含测量上报类型、 上报周期、 测量对象、 资源上报方向、 测量失败的小区列表信息， 小区列表信息中包含小区全局标识符； 又比如， 目的基站收到的资源状态请求消息中测量配置信息如图 6所示， 则该目的基 站封装出的成功响应消息中的所述失败的测量信息相应地也包含一个或多个 测量失败列表， 每个测量失败列表中包含测量上报类型、 上报周期、 测量对 象、 资源上报方向、 失败的小区列表信息， 小区列表信息中包含小区全局标 识符。
对于例如图 4、 图 6所示测量配置结构， 由于其中包含源基站为测量配 置信息分配的测量 ID, 所以， 目的基站在封装所述失败的测量信息时， 也可 以只封装失败的测量信息对应的测量 ID; 源基站在接收到所述资源状态成功 响应消息后， 可以根据失败的测量信息对应的测量 ID, 以及本地保存的该测 量 ID对应的测量配置信息， 获知失败的测量信息。
基于图 4和图 6所示的测量配置信息中包含测量 ID, 且如上文所述， 引 入测量 ID的好处在于，如果目的基站保存了该测量 ID对应的测量配置信息， 那么源基站再次向该目的基站发送相同的测量配置时， 可以仅仅发送该相同 的测量配置对应的测量 ID即可。 因此， 本发明实施例还提出了一种较佳的测 量停止消息结构， 参考图 9, 所述测量停止消息中包含消息类型和测量停止 列表， 所述测量停止列表中包含要停止测量对应的测量 ID。 目的基站接收到 该测量停止消息后，根据该测量停止消息中的测量 ID查找本地保存的该测量 ID对应的测量配置， 并按照查找出的测量配置停止该测量。 所述测量停止消 息中还可以包含用以唯一标识目的基站的目的基站标识。
当然， 本发明还可有其他多种实施例， 在不背离本发明精神及其实质的 些相应的改变和变形都应属于本发明所附的权利要求的保护范围。
工业实用性
本发明提出一种在 LTE系统下资源测量上报的方法， 源基站在封装资源 状态测量请求消息时， 在测量请求类型中增加修改类型， 使得基站间能够实 现在发起多个资源状态测量上报后， 在网络运行过程中可以便捷地修改测量 配置， 减少了基站间信息交互的次数； 釆用测量列表来管理测量配置信息， 可以通过多个测量列表携带多组不同的测量配置信息， 所述多个测量列表还 可以对应于不同测量请求类型， 携带的测量配置信息更多， 从而有效地减少 了基站间信息交互的次数； 为测量配置信息分配对应的测量 ID, 因此在测量 停止消息中仅包含一测量 ID即可实现停止测量。

Claims

权 利 要 求 书
1、 一种在长期演进系统下资源测量上报的方法，源基站封装资源状态 请求消息并将其发送给目的基站， 目的基站接收到所述资源状态请求消息后 进行处理， 如果处理成功， 则向源基站发送资源状态成功响应， 如果处理失 败， 则源基站发送资源状态失败响应， 其特征在于， 所述源基站在资源状态 请求消息中至少封装消息类型、 测量请求类型、 源基站全局标识符和测量配 置信息， 其中：
所述测量请求类型的赋值为枚举类型， 其赋值为开始、 修改和停止中的 一种或者多种；
所述测量配置信息为当前测量请求类型下的测量配置信息。
2、 如权利要求 1所述的方法，其特征在于， 所述源基站在所述测量配 置信息中至少封装测量上报类型、 测量对象和测量小区列表， 其中：
所述测量上 >¾类型为周期测量或者事件测量；
所述测量对象至少包含硬件负荷、 传输带宽、 物理资源块使用情况中的 一种或者多种；
所述测量小区列表中包含用于唯一标识每个小区的小区全局标识符。
3、 如权利要求 1所述的方法，其特征在于， 所述源基站在所述测量配 置信息中封装一个或者多个测量列表， 每一所述测量列表中至少包含测量上 报类型、 测量对象和测量小区列表， 其中：
所述测量上 >¾类型为周期测量或者事件测量；
所述测量对象至少包含硬件负荷、 传输带宽、 物理资源块使用情况中的 一种或者多种；
所述测量小区列表中包含用于唯一标识每个小区的小区全局标识符。
4、 如权利要求 3所述的方法， 其特征在于：
所述源基站还分别为所述测量列表中的测量配置信息分配测量 ID, 并将 所述测量 ID封装到对应的测量列表中。
5、 如权利要求 2-4中任何一项所述， 其特征在于： 在所述测量上报类型为周期测量时， 所述源基站还在所述测量配置信息 中封装测量上报周期；
在所述测量对象中包含传输带宽或者物理资源块使用情况时， 所述源基 站还在所述测量配置信息中封装测量上报方向。
6、 如权利要求 1所述的方法，其特征在于， 所述源基站在所述测量配 置信息中封装基站测量配置和 /或小区测量配置， 其中：
所述基站测量配置中包含硬件资源测量配置和 /或传输层资源测量配置； 所述小区测量配置中包含传输层资源测量配置和 /或物理无线资源测量 配置。
7、 如权利要求 6所述的方法， 其特征在于：
所述硬件资源测量配置和所述传输层资源测量配置中至少包含测量上报 类型和测量上报方向；
所述传输层资源测量配置和所述物理无线资源测量配置中包含一个或者 多个测量小区列表， 所述测量小区列表中至少包含用于唯一标识每个小区的 小区全局标识符、 测量上 类型和测量上 方向；
所述测量上报类型为周期测量或者事件测量， 如果所述测量上报类型为 周期测量， 则所述测量配置中还包含测量上报周期。
8、 如权利要求 7所述的方法， 其特征在于：
所述源基站还为所述硬件资源测量配置、 所述传输层资源测量配置、 所 述传输层资源测量配置和所述物理无线资源测量配置中的一种或者多种分配 测量 ID, 并将所述测量 ID封装到对应的测量配置中。
9、 如权利要求 1、 2、 3、 4、 6、 7、 8中任何一项所述， 其特征在于： 所述目的基站在封装资源状态失败响应消息时， 还封装了等待时间， 然 后将封装好的资源状态失败响应消息发送给所述源基站；
所述源基站收到目的基站发送来的所述资源状态失败响应消息后， 对所 述资源状态失败响应消息中的等待时间进行定时， 在定时到时时， 重新向所 述目的基站发送资源状态请求消息。
10、 如权利要求 1、 2、 3、 4、 6、 7、 8中任何一项所述， 其特征在于： 所述目的基站在封装资源状态成功响应消息时， 根据所述目的基站接收 到的资源状态请求消息中的测量配置信息所封装的参数， 构造失败的测量信 息并将其封装到所述资源状态成功响应消息中， 然后发送给所述源基站。
11、 如权利要求 4或 8所述的方法， 其特征在于：
所述源基站在向所述目的基站发送一资源状态请求消息后， 还封装一测 量停止消息， 所述测量停止消息中至少包含消息类型和测量停止列表， 所述 测量停止列表中包含该资源状态请求消息中测量配置中测量 ID;
所述目的基站在接收到所述测量停止消息后， 根据所述测量停止消息中 的测量 ID在本地查找该测量 ID对应的测量配置信息， 按照查找到的测量配 置信息停止测量上报。
12、 如权利要求 1所述的方法， 其特征在于：
所述目的基站在对所述资源状态请求消息进行处理时， 如判断所述资源 状态请求消息中的测量请求类型为停止且测量配置信息不存在时， 所述目的 基站停止其当前进行的所有资源状态测量。
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BRPI0823389B1 (pt) 2020-10-20
CN102257846A (zh) 2011-11-23
EP2381715A4 (en) 2015-03-11
RU2481732C2 (ru) 2013-05-10
EP2381715B1 (en) 2018-09-05
CN102257846B (zh) 2014-06-18
US8577386B2 (en) 2013-11-05
EP2381715A1 (en) 2011-10-26
US20110250882A1 (en) 2011-10-13
US8880091B2 (en) 2014-11-04
BRPI0823389A2 (pt) 2015-06-16
ES2700050T3 (es) 2019-02-13
US20140031007A1 (en) 2014-01-30

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