CN105075316A - 向无线蜂窝网络提供的无线局域网(wlan)流量负载测量 - Google Patents

向无线蜂窝网络提供的无线局域网(wlan)流量负载测量 Download PDF

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CN105075316A
CN105075316A CN201380073734.6A CN201380073734A CN105075316A CN 105075316 A CN105075316 A CN 105075316A CN 201380073734 A CN201380073734 A CN 201380073734A CN 105075316 A CN105075316 A CN 105075316A
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flow load
load data
poll
wlan
report
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Granted
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CN201380073734.6A
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CN105075316B (zh
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乔伊·周
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Apple Inc
Intel Corp
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Intel IP Corp
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Abstract

本公开一般地提供了用于向3GPP无线蜂窝网络提供WLAN流量负载测量的设备、系统和方法。WLAN元件管理器(EM)可以包括轮询模块，轮询模块轮询WLAN接入点(AP)，该轮询用于请求来自所述WLAN？AP的流量负载数据；定时器模块，定时器模块触发轮询模块以周期性间隔进行轮询；日志模块，日志模块接收所请求的流量负载数据、并将所请求的流量负载数据记录；以及集成基准点(IRP)代理，IRP代理包括生成流量负载报告以供传输到网络管理器(NM)的报告模块，所述流量负载报告是基于所记录的流量负载数据的。

Description

向无线蜂窝网络提供的无线局域网(WLAN)流量负载测量
相关申请交叉引用
本公开涉及递交于2013年3月29日的美国临时专利申请序列号61/806,821并要求其优先权，其内容被通过引用整体结合于此。
技术领域
本发明涉及无线局域网(WLAN)的流量负载测量，并且更具体地，涉及向第三代合作伙伴计划(3GPP)无线蜂窝网络提供WLAN流量负载测量。
背景技术
对智能手机、平板电脑和云计算设备的加速采用已造成全球移动数据流量的快速增长。预测表明，到2015年移动数据流量预计有相较2010年26倍的增长，而数据流量也达到每月6.3艾字节的速率。由于移动数据价格倾向于保持相对平稳，通过部署更多的基站和实施新技术来扩展网络能力在处理这种增长方面效率可能是有限的。
对此问题的一种方案涉及将流量从移动无线蜂窝网络(例如3GPP长期演进(LTE)或LTE高级(LTE-A)网络)卸载至无线局域网络(WLAN)。在这种情景中，由小区基站(例如演进节点B(eNB))提供服务的无线移动设备(例如用户设备(UE))可以将流量中的一些或全部卸载至可用的WLAN接入点(AP)。然而需要一种用于由eNB判定对这样的卸载而言可能可用的WLANAP的流量负载的机制，以确保系统的操作的高效性和可靠性，从而移动数据卸载的目标得以实现。
附图说明
参考附图(其中类似的标号表示类似的部分)并随着下文的具体说明的继续，所要求保护的主题的实施例的特征和优点将变得显而易见，并且其中：
图1示出了与本公开相符的一个示例实施例的顶级系统示意图；
图2示出了与本公开相符的一个示例实施例的框图；
图3示出了与本公开相符的另一示例实施例的框图；
图4示出了和与本公开相符的另一示例实施例相关联的数据结构；
图5示出了和与本公开相符的另一示例实施例的相关联的数据结构；
图6示出了与本公开相符的一个示例实施例的流程图；并且
图7示出了与本公开相符的另一示例实施例的流程图。
尽管将参考说明性实施例来继续下文的详细说明，许多替代、修改和变化对本领域技术人员将是显而易见的。
具体实施方式
本公开一般地提供了用于向3GPP无线蜂窝网络(例如LTE或LTE-A网络)提供WLAN流量负载测量的设备、系统和方法。WLAN卸载是用于负载平衡的技术，其中来自相对超载的eNB的流量可以被卸载到若干潜在WLANAP中的一个。对用于卸载的WLANAP的选择可以通过向eNB提供与AP相关联的相对当前流量负载的测量来辅助，从而相对轻载的AP可以得以选择。由于AP和eNB之间不存在直接通信链路，流量负载测量可以通过经由网络构架的路径，从AP报告至WLAN元件管理器(EM)、并且向上报告至网络管理器(NM)。NM随后可以将流量负载测量经由3GPP域管理器(DM)进一步向下发送至该域中的eNB。
图1示出了与本公开相符的一个示例实施例的顶级系统示意图100。无线网络被示出为包括可以由eNB106提供服务的小区覆盖区域小区A102和小区B104。在另一示例实施例中，eNB106可以向两个区(小区A102和小区B104)提供覆盖。任意数量的WLANAP108可以位于或覆于小区A102或小区B104的网络区域中。UE110可以典型地被配置为传输来自和去往eNB106的语音和数据流量。然而在一些实例中(例如流量增加的情况下)，eNB106可以将来自UE110的数据流量中的一些或全部卸载至WLANAP108中的一个或多个。如将在下文更详细地描述的，网络管理器112可以被配置为与网络中的WLANAP和eNB(例如通过域管理器来)进行通信，来向WLANAP提供对于eNB的流量负载测量，以监视数据卸载性能并确保系统操作的增加的效率和可靠性。
虽然这是用于说明的目的的简化示例，应该理解的是，在实践中对各种类型的eNB、UE、WLANAP的任何配置可得以部署，并且可以提供延伸到任意数量或地区、区域或区的覆盖。无线网络可以符合、或者以其它方式与下述标准兼容：IEEE802.11WLAN网络标准、基于第三代合作伙伴计划(3GPP)长期演进(LTE)和/或高级LTE(LTE-A)的无线网络标准，包括该标准的当前、先前和未来的版本。这些标准可包括例如IEEE802.112012“无线LAN媒体访问控制(MAC)和物理层(PHY)规范”；以及3GPPTS36.300，V11.2.0“演进的通用陆地无线接入(E-UTRA)和演进的通用陆地无线电接入网络(E-UTRAN)；总体说明；第2阶段(第11版)”。
图2示出了与本公开相符的一个示例实施例的框图200。网络管理器(NM)112被示出为包括IRP管理器204(也称为操作支持系统(OSS))。IRP管理器或OSS通常是被配置为向网络运营商或供应商提供并辅助网络管理和支持功能的计算机系统和/或软件应用。这些支持功能可以包括性能监视和故障检测。IRP管理器204可以被配置为经由3GPP域管理器(DM)206(可包括3GPP元件管理器208)与3GPPeNB106进行通信。3GPP域管理器206可以被配置为提供针对子网的元件管理和域管理功能，而3GPP元件管理器208可以被配置为提供一组终端用户功能以用于一组相关类型的网络元件(例如3GPP的eNB106)的管理。
IRP管理器204还可以被配置为经由无线局域网元件管理器(WLANEM)210来与WLANAP108通信。WLAN元件管理器210可以被配置为提供针对子网的元件管理和域管理功能、以及提供一组终端用户功能以用于一组相关类型的网络元件(例如WLANAP108)的管理。
3GPP域管理器206和WLAN域管理器210可以被配置为提供到网络管理器112的2型接口220(其可以是标准化接口)，同时提供到eNB106和WLANAP108的1型接口230(其可以是专用接口)。IRP管理器204可以被配置为经由2型接口220来与驻留在WLAN的元件管理器210上的IRP代理212通信。两种类型的接口之间可能需要的任何消息翻译可以由WLAN映射功能(WMF)模块214来执行。WLAN元件管理器210还可以包括被配置为管理WLANAP108以及与WLANAP108接口连接的接入控制器模块216。
图3示出了与本公开相符的另一示例实施例的框图300。WLAN元件管理器210被示出为包括接入控制器302、日志模块308、日志文件310、WMF模块312、以及IRP代理314，它们的操作都将在下文更详细的说明。在一些实施例中，接入控制器302还可以包括定时器模块304和轮询(polling)模块306，而IRP代理还可以包括报告模块316。
轮询模块306可以被配置为轮询WLANAP以请求流量负载数据。轮询可以以由定时器模块304提供的周期性的间隔来由定时器到期触发。周期性的间隔可以是基于eNB的流量负载管理要求而可配置或以其它方式可编程的。日志模块308可以被配置为接收所请求的流量负载数据并将所接收的流量负载数据进行记录(例如记录在日志文件310中)。报告模块316可以被配置为生成流量负载报告以供传输到网络管理器112。流量负载报告是基于所记录的流量负载数据的，其可以包括对如结合图4和图5在下文描述的信道利用率(channelutilization)指示符和可用接纳能力(availableadmissioncapacity)指示符。
WMF模块可以被配置为将流量负载数从WLAN标准接口格式映射或转译为3GPP标准接口格式。流量负载数据可以被合并入与管理信息库(MIB)消息相关联的一个或多个数据元素，管理信息库(MIB)消息经由标准接口(例如2型接口220)被传输至NM。
NM112的IRP管理器204可以被配置为(例如使用轮询模块来)轮询WLANEM210以请求流量负载报告。在一些实施例中，IRP管理器204还可以配置有通知处理装置(notificationhandler)来接受/接收来自WLANEM210的未轮询流量。IRP管理器204还可以配置有通信模块来将流量负载报告发送至3GPPDM206，以供随后传输到3GPPeNB，以用于确定WLANAP中用于数据流量卸载的候选。
图4示出了和与本公开相符的另一示例实施例相关联的数据结构400。WLAN元件管理器210可以被配置为接收包括Dot11CounterEntry(Dot11计数器条目)402的MIB消息，Dot11计数器条目402提供来自WLANAP的dot11AvaliableAdmissionCapacity(dot11可用接纳能力)406数据元素以及dot11ChannelUtilization(dot11信道利用率)404数据元素。这些数据元素404、406可被配置为指示与WLANAP相关联的数据流量负载。
如进一步示出在图5中的，dot11信道利用率404数据元素可以由AP配置作为指示给定时间段中的时间百分比的计数器，在该百分比的时间期间，AP使用物理或虚拟载波感测机制感测到介质为忙碌。dot11信道利用率404可以归一化为值255。dot11可用接纳能力406数据元素可以由AP配置作为指示介质中经由明确接纳控制可用的剩余时间量的计数器。dot11可用接纳能力406数据元素可以以32微秒为单位进行表示。
图6示出了与本公开相符的一个示例实施例的流程图600。在操作610处，WLANEM210等待定时器的期满。在操作620处，WLANEM210轮询WLANAP108中的一个或多个以获取流量负载数据。在操作630处，WLANEM210从WLANAP108中的一个或多个接收流量负载数据。在操作612处，WLANEM210将AP流量负载数据记录。在操作614处，WLANEM210确定是否有必要报告数据，例如是否从网络管理器112接收到轮询请求、或是否通知计时器期满。在操作624处，流量负载报告被从EM210传输至NM112。在操作626处，流量负载报告被从NM112(例如经由DM206)传输至eNB106。eNB可以判定哪些AP在UE的临近范围中，并且随后基于流量负载报告来选择这些较近AP中相对轻载的那些AP的子集作为该UE的卸载候选。在操作628处，用于卸载的候选AP被从eNB106发送至UE110。
图7示出了与本公开相符的另一示例实施例的流程图700。在操作710处，对WLANAP进行轮询以从该WLANAP请求流量负载数据。轮询由定时器以周期性间隔来触发。在操作720处，接收所请求的流量负载数据。在操作730处，所接收的流量负载数据被记录到日志文件。在操作740处，基于所记录的流量负载数据来生成流量负载报告。在操作750处，流量负载报告被发送到网络管理器。网络管理器随后可以发送流量负载报告到eNB，eNB随后可以基于该流量负载报告来将具有低流量负载的一个或多个WLANAP选择作为用于卸载的候选。
本文所描述的方法的实施例可以在系统中实现，系统包括其上(以单独或组合的形式)存储有指令的一种或多种存储介质，当指令由一个或多个处理器执行时，上述方法被执行。这里，处理器可包括例如，系统CPU(例如核心处理器)和/或可编程电路。因此，根据本文所描述的方法的操作可以被跨多个物理设备分布，这多个物理设备例如可以是一些不同物理位置处的处理结构。此外如本领域技术人员将理解的，方法的操作可以以单独或以子组合的形式来进行。因此，本领的普通技术人员将理解，不是每个流程图的所有操作都需要被执行，并且本公开清楚地意在表明这样的操作的所有组合是被允许的。
存储介质可以包括任何类型的有形介质，例如任何类型的磁盘(包括软盘、光盘、光盘只读存储器(CD-ROM)、可重写光盘(CD-RW)、数字通用光盘(DVD)和磁光盘)、半导体设备(例如，只读存储器(ROM)、诸如动态和静态RAM之类的随机存取存储器(RAM)、可擦除可编程只读存储器(EPROM)、电可擦除可编程只读存储器(EEPROM)、闪速存储器、磁或光卡)、或适用于存储电子指令的任何类型的介质。
如本文任何实施例中所使用的，“电路”例如可以单独地或以任何组合包括硬连接电路、可编程电路、状态机电路、和/或存储由可编程电路执行的指令的固件。应用可以被实现为可以在诸如主机处理器或其它可编程电路之类的可编程电路上被执行的代码或指令。如本文任何实施例中所使用的，模块可以被实现为电路。电路可以被实现为集成电路，例如集成电路芯片。
因此，本公开内容提供了用于向3GPP无线蜂窝网络提供WLAN流量负载测量的设备、方法、系统、和计算机可读存储介质。下文的示例涉及进一步的实施例。
根据一个方面，提供了一种WLAN元件管理器(EM)。WLANEM可以包括轮询WLAN接入点(AP)的轮询模块，轮询用于请求来自WLANAP的流量负载数据。本示例的WLANEM也可以包括触发轮询模块以周期性间隔进行轮询的定时器模块。本示例的WLANEM还可以包括接收流量负载数据、并将其记录的日志模块。本示例的WLANEM还可以包括集成基准点(IRP)代理，IRP代理包括生成流量负载报告以供传输到网络管理器(NM)的报告模块，流量负载报告是基于所记录的流量负载数据的。
另一示例性WLANEM包括前述组件，并且流量负载数据包括信道利用率指示符。
另一示例性WLANEM包括前述组件，并且流量负载数据包括可用的接纳能力指示符。
另一示例性WLANEM包括前述组件，并且还包括WLAN映射功能(WMF)模块，WMF模块将流量负载数据从WLAN标准接口格式映射到第三代合作伙伴计划(3GPP)标准接口格式。
另一示例性WLANEM包括前述组件，并且报告模块响应于来自NM的轮询请求来向该NM提供流量负载报告。
另一示例性WLANEM包括前述的组件，并且报告模块将流量负载数据合并入与管理信息库(MIB)消息相关联的一个或多个数据元素，MIB消息经由标准化接口传输至NM。
另一示例性WLANEM包括前述的组件，并且用于轮询的周期性间隔可以基于演进节点B(eNB)的流量负载管理要求来配置。
根据另一方面提供了IRP管理器。IRP管理器可以包括轮询WLANEM的轮询模块，轮询用于请求来自WLANEM的流量负载数据。本示例的IRP管理器还可以包括接收来自WLANEM的未轮询流量负载报告的通知处理装置。本示例的IRP管理器还可以包括通信模块，通信模块将流量负载报告发送至3GPP域管理器(DM)，以供传输到3GPPeNB以确定用于数据流量卸载的WLANAP候选。
另一示例性IRP管理器包括前述组件，并且流量负载数据报告包括与一个或多个WLANAP相关联的信道利用率指示符和可用接纳能力指示符。
另一示例IRP管理器包括前述组件，并且流量负载数据报告与管理信息库(MIB)消息相关联，MIB消息经由标准化接口传输至托管IRP管理器的网络管理器(NM)。
根据另一方面提供了一种方法。该方法可包括轮询WLAN接入点(AP)以从该WLANAP请求流量负载数据，轮询以周期性间隔被触发。本示例的方法还可以包括接收所请求的流量负载数据。本示例的方法还可以包括将所接收的流量负载数据记录在日志文件中。本示例的方法还可以包括基于所记录的流量负载数据来生成流量负载报告。本示例的方法还可以包括将流量负载报告发送至网络管理器(NM)。
另一示例性方法包括前述操作，并且流量负载数据包括信道利用率指示符。
另一示例性方法包括前述操作，并且流量负载数据包括可用的接纳能力指示符。
另一示例性方法包括前述操作，并且还包括将流量负载数据从WLAN标准接口格式映射到第三代合作伙伴计划(3GPP)标准接口格式。
另一示例性方法包括前述操作，并且还包括响应于来自NM的轮询请求来向该NM提供流量负载报告。
另一示例性方法包括前述操作，并且还包括将流量负载数据合并入与管理信息库(MIB)消息相关联的一个或多个数据元素，MIB消息经由标准化接口传输至NM。
另一示例性方法包括前述操作，并且还包括基于演进节点B(eNB)的流量负载管理要求来对轮询的周期性间隔进行编程。
根据另一方面提供其上存储有指令的至少一种计算机可读存储介质，当指令由处理器执行时使得该处理器执行如在上述任何示例中所描述的方法的操作。
根据另一方面提供了包括用于执行如在上述任何示例中所描述的方法的装置的设备。
本文已采用的术语和表达被用作描述且无限制的术语，并且在这样的术语和表达的使用中，没有意图排除被示出和描述的特征(或其中一部分)的任何等同物，并且应该意识到在权利要求的范围内各种修改是可能的。因此，权利要求旨在覆盖所有这样的等同物。本文已经描述了各种特征、方面和实施例。特征、方面和实施例容许互相组合以及变型和修改，这将被本领域的技术人员所理解。因此，本公开应该被认为包含这样的组合、变型和修改。

Claims (24)

1.一种无线局域网(WLAN)元件管理器(EM)，包括：
轮询模块，所述轮询模块轮询WLAN接入点(AP)，所述轮询用于请求来自所述WLANAP的流量负载数据；
定时器模块，所述定时器模块触发所述轮询模块以周期性间隔进行轮询；
日志模块，所述日志模块接收所请求的流量负载数据，并将所请求的流量负载数据记录；以及
集成基准点(IRP)代理，所述IRP代理包括生成流量负载报告以供传输到网络管理器(NM)的报告模块，所述流量负载报告是基于所记录的所述流量负载数据的。
2.如权利要求1所述的WLANEM，其中所述流量负载数据包括信道利用率指示符。
3.如权利要求1所述的WLANEM，其中所述流量负载数据包括可用的接纳能力指示符。
4.如权利要求1所述的WLANEM，还包括WLAN映射功能(WMF)模块，所述WMF模块将所述流量负载数据从WLAN标准接口格式映射到第三代合作伙伴计划(3GPP)标准接口格式。
5.如权利要求1所述的WLANEM，其中所述报告模块响应于来自所述NM的轮询请求将所述流量负载报告提供给所述NM。
6.如权利要求1所述的WLANEM，其中所述报告模块将所述流量负载数据合并入与管理信息库(MIB)消息相关联的一个或多个数据元素，所述MIB消息经由标准化接口传输至所述NM。
7.如权利要求1所述的WLANEM，其中用于轮询的所述周期性间隔能基于演进节点B(eNB)的流量负载管理要求来配置。
8.一种集成基准点(IRP)管理器，包括
轮询模块，所述轮询模块轮询WLANEM，所述轮询用于请求来自所述WLANEM的流量负载数据；
通知装置，所述通知装置接收来自所述WLANEM的未轮询流量负载报告；以及
通信模块，所述通信模块将所述流量负载报告发送至3GPP域管理器(DM)，以供传输到3GPPeNB以确定用于数据流量卸载的WLANAP候选。
9.如权利要求8所述的IRP管理器，其中所述流量负载数据报告包括与所述WLANAP中的一个或多个相关联的信道利用率指示符和可用接纳能力指示符。
10.如权利要求8所述的IRP管理器，其中所述流量负载数据报告与管理信息库(MIB)消息相关联，MIB消息经由标准化接口传输至网络管理器(NM)，所述NM托管所述IRP管理器。
11.一种方法，包括：
轮询WLAN接入点(AP)以从所述WLANAP请求流量负载数据，所述轮询以周期性间隔被触发；
接收所请求的流量负载数据；
将所接收的流量负载数据记录在日志文件中；
基于所记录的流量负载数据来生成流量负载报告；并且
将所述流量负载报告发送至网络管理器(NM)。
12.如权利要求11所述的方法，其中所述流量负载数据包括信道利用率指示符。
13.如权利要求11所述的方法，其中所述流量负载数据包括可用的接纳能力指示符。
14.如权利要求11所述的方法，还包括将所述流量负载数据从WLAN标准接口格式映射到第三代合作伙伴计划(3GPP)标准接口格式。
15.如权利要求11所述的方法，还包括响应于来自所述NM的轮询请求来向所述NM提供所述流量负载报告。
16.如权利要求11所述的方法，还包括将所述流量负载数据合并入与管理信息库(MIB)消息相关联的一个或多个数据元素，所述MIB消息经由标准化接口传输至所述NM。
17.如权利要求11所述的方法，还包括基于演进节点B(eNB)的流量负载管理要求来对用于轮询的所述周期性间隔进行编程。
18.一种其上存储有指令的计算机可读存储介质，当所述指令由处理器执行时导致用于提供流量负载测量的下述操作，这些操作包括：
轮询WLAN接入点(AP)以从所述WLANAP请求流量负载数据，所述轮询以周期性间隔被触发；
接收所请求的流量负载数据；
将所接收的流量负载数据记录在日志文件中；
基于所记录的流量负载数据来生成流量负载报告；并且
将所述流量负载报告发送至网络管理器(NM)。
19.如权利要求18所述的计算机可读存储介质，其中所述流量负载数据包括信道利用率指示符。
20.如权利要求18所述的计算机可读存储介质，其中所述流量负载数据包括可用的接纳能力指示符。
21.如权利要求18所述的计算机可读存储介质，还包括将所述流量负载数据从WLAN标准接口格式映射到第三代合作伙伴计划(3GPP)标准接口格式的操作。
22.如权利要求18所述的计算机可读存储介质，还包括响应于来自所述NM的轮询请求来向所述NM提供所述流量负载报告的操作。
23.如权利要求18所述的计算机可读存储介质，还包括将所述流量负载数据合并入与管理信息库(MIB)消息相关联的一个或多个数据元素的操作，所述MIB消息经由标准化接口传输至所述NM。
24.如权利要求18所述的计算机可读存储介质，还包括基于演进节点B(eNB)的流量负载管理要求来对用于轮询的所述周期性间隔进行编程的操作。
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