WO2016045471A1 - 一种small cell从开到关的转换方法 - Google Patents

一种small cell从开到关的转换方法 Download PDF

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WO2016045471A1
WO2016045471A1 PCT/CN2015/087647 CN2015087647W WO2016045471A1 WO 2016045471 A1 WO2016045471 A1 WO 2016045471A1 CN 2015087647 W CN2015087647 W CN 2015087647W WO 2016045471 A1 WO2016045471 A1 WO 2016045471A1
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small cell
secondary carrier
cell
timer
handover
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PCT/CN2015/087647
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English (en)
French (fr)
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黄小军
李小龙
陈亮明
姜杉
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武汉虹信通信技术有限责任公司
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Publication of WO2016045471A1 publication Critical patent/WO2016045471A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • the technical field to which the present invention relates is in the field of wireless communication. More specifically, the present invention relates to a method for converting a small cell from open to closed of 3GPP LTE/LTE-A.
  • the small cell In order to increase the capacity of the cellular mobile network and reduce the pressure on the macro base station network, the small cell is regarded as an effective solution. Therefore, the 3GPP standards organization established the small cell enhancement research project in the R12 phase to further study the related functions of the small cell.
  • the small cell on/off technology belongs to the research project and involves three scenarios: handover, carrier aggregation and dual connectivity.
  • serious interference may occur between small cells.
  • a small cell on/off scheme is proposed. Therefore, the small cell can be turned on or off under appropriate conditions. For example, when the small cell is not loaded, the small cell can be turned off, or when the small cell is lightly loaded, the small cell can be served. The UE switches to another cell, and then the small cell is placed in the off state, so that the interference of the small cell to other cells can be mitigated, and the power consumption of the small cell can be reduced.
  • the load of other cells is high, a certain cell can be turned on.
  • the small cell of the state is used for load balancing, thereby increasing system capacity and providing a better service experience for users.
  • the transition from the off state to the open state of the small cell is relatively easy to implement, for example, by transmitting a handover request, adding a carrier, and adding a SeNB to the small cell, but the state transition from on to off is more complicated. .
  • the present invention has been directed to the above problem, and proposes a method for solving the transition of the small cell from the on state to the off state.
  • a method for converting a small cell from on to off setting a timer with a timing of T in the Small cell, and the small cell starts the timer.
  • the small cell counts the air resource utilization or the load level. If the resource utilization rate is too low or the load level is too low, adjust the handover parameters or send a deactivation command, so that all UEs served by the small cell switch to the neighboring macro base station or small cell carrier to activate all UEs that serve it, and then set the small cell. In the off state.
  • Step 1 The small cell starts a timer with a timing of T, and monitors the traffic load status, resource utilization, or interference to the neighboring cell of the small cell in the time T.
  • the service load status includes the uplink load level or the cell capacity, and the resource Utilization scenarios include uplink PRB utilization, and the uplink load level includes hardware load or S1TNL load;
  • Step 2 The small cell monitors the service, the resource, or the interference condition in the time T, and determines whether to close the small cell or turn off the small cell secondary carrier.
  • Step 3 For the small cell to be turned off or the small cell secondary carrier is turned off, the processing is performed as follows:
  • the small cell adjusts the switching parameters: whether the small cell and the macro base station are different frequency or same frequency scenarios. If the frequency is different, the A2 event threshold is raised, the ocs is lowered, and the UE of the small cell is switched to the macro base. Station; if it is the same frequency, raise the measurement open threshold S-measure, reduce ocs;
  • the small cell After the switching parameter is adjusted, the small cell starts monitoring whether the handover request Handover Request/Sequence Status Transmission SN Status Transfer/Msg1 message is received. If any of these messages is received, the handover parameter is returned, and the timer is restarted. The cell continues to be in the on state, and if the three messages are received before the small cell receives the handover request acknowledgement sent by the macro base station, the small cell does not send the handover command, that is, does not perform the subsequent handover procedure, if these three messages After the small cell receives the handover request acknowledgement sent by the macro base station, the small cell sends a handover command to perform the handover; if no message is received, the small cell does not have the left UE after releasing the served UE context. Upon receipt of any of the above messages, proceed to step (4.1) of Step 4;
  • step (3.2) If the small cell secondary carrier is disabled, the primary carrier of the small cell sends a deactivation command MAC CE to all UEs under the service, and then proceeds to step (4.2) of step 4, where the serial number of the secondary carrier that needs to be closed is included in the MAC CE. The corresponding bit is set to 0;
  • Step 4 For the small cell to be turned off or the small cell secondary carrier is turned off, the processing is performed as follows:
  • the small cell restores the switching parameters before the adjustment after releasing the served UE context, and the small cell is placed in the off state. At this time, the small cell only sends the DRS.
  • the small cell sets the secondary carrier to the off state after passing n subframes, where n is greater than or equal to 8, and the secondary carrier only sends DRS.
  • the second step includes the following process:
  • the small cell or the small cell secondary carrier monitors the resource utilization, that is, the uplink PRB utilization rate, set the uplink PRB utilization threshold threshold1, the small cell or the small cell secondary carrier to determine the PRB utilization, pass and set.
  • the uplink PRB utilization threshold threshold1 is compared. If the threshold is exceeded, the timer is restarted and the next time T is entered. The small cell or the small cell secondary carrier continues to monitor the uplink PRB utilization.
  • the small cell or the small cell secondary carrier monitors the uplink load level, where the uplink load level includes the hardware load or the S1 TNL load, if the monitored uplink load level exceeds the LowLoad, the value is MediumLoad, HighLoad, Overload, Restart the timer T, and enter the next time T, the small cell or the small cell secondary carrier continues to monitor;
  • the present invention has the following innovations and benefits:
  • the proposed small cell shutdown mechanism can be a good system and a small cell open method to form a system flow.
  • the small cell decides to adjust the handover parameter and is in the preparation phase of transitioning the state to the off state, it still monitors whether the Handover Request/SN Status Transfer/Msg1 message is received, and further determines whether to turn off the small cell according to whether the message is received.
  • the Small cell determines whether to switch all the UEs it serves to the macro base station according to the time when the Handover Request/SN Status Transfer/Msg1 message is received.
  • FIG. 1 is a schematic diagram of a handover request confirmation that a small cell receives a handover request or a service request before a macro cell sends a small cell to a small cell;
  • FIG. 2 is a schematic diagram of a handover request acknowledgement sent by a small cell to a small cell after receiving a handover request or a service request in a handover scenario;
  • FIG. 3 is a schematic diagram of a small cell switch changing with time
  • Figure 4 is a flow chart of the present invention when switching scenes.
  • the Small cell sets a timer with a timing of T.
  • the timer or the small cell starts the timer according to certain criteria (the steps described later).
  • the small cell counts the air interface resource utilization or load level.
  • the handover parameter is adjusted or (deactivated command is sent to the UE under service), so that all UEs served by the small cell switch to the adjacent macro base station or the small cell carrier to activate the service. All UEs then put the small cell in the off state.
  • Step 1 The small cell starts the timer, and monitors the service load status, resource utilization, or interference to the neighboring cell of the small cell in the time T.
  • the resource utilization situation may be the uplink PRB utilization situation
  • the service load status may be the uplink load.
  • Step 2 The small cell monitors the service, resource, or interference in the time T to determine whether to close the small cell or turn off the small cell carrier. For the steps, see steps 2.1-2.3.
  • Step 2.1 If the small cell or the small cell secondary carrier monitors the resource utilization, that is, the uplink PRB utilization rate, set the uplink PRB utilization threshold threshold, the small cell or the small cell secondary carrier to determine the PRB utilization, pass and set If the threshold is exceeded, the timer T is restarted, and the timer T is restarted, and the next time T is entered. The small cell or the small cell secondary carrier continues to monitor the uplink PRB utilization rate.
  • the resource utilization that is, the uplink PRB utilization rate
  • set the uplink PRB utilization threshold threshold the small cell or the small cell secondary carrier to determine the PRB utilization
  • Step 2.2 If the small cell or the small cell secondary carrier monitors the uplink load level, the uplink load level may be the hardware load or the S1TNL load. If the monitored uplink load level exceeds the LowLoad, the value is MediumLoad, HighLoad, Overload. Restart the timer T, and enter the next time T, the small cell or the small cell secondary carrier continues to monitor;
  • Step 2.3 If the small cell or the small cell secondary carrier monitors the cell capacity, set the cell capacity threshold to threshold. If the monitored cell capacity value exceeds the threshold, restart the timer T and enter the next time. The T, small cell or small cell secondary carrier continues to monitor.
  • Step 3 For the small cell to be turned off or the small cell secondary carrier is turned off, the processing is performed separately. as follows:
  • Step 3.1 If the small cell is turned off, the small cell adjusts the handover parameters.
  • the small cell and the macro base station are different frequency or same frequency scenarios. If the frequency is different, the A2 event threshold is raised, the ocs is lowered, and the small cell UE is switched. Go to the macro base station; if it is the same frequency, raise the measurement open threshold (S-measure) and lower the ocs.
  • S-measure measurement open threshold
  • the small cell After the switching parameters are adjusted, the small cell starts monitoring whether the Handover Request/SN Status Transfer/Msg1 message is received. If any of these messages is received, the switching parameters are reset and restarted.
  • the T, small cell continues to be in the open state, and if the three messages are received before the small cell receives the handover request acknowledgement sent by the macro base station (as shown in FIG. 1), the small cell does not send the handover command, that is, does not execute.
  • the small cell if the three messages are received after the small cell receives the handover request acknowledgement sent by the macro base station (as shown in FIG. 2), the small cell sends a handover command to perform the handover; if none of the above is received
  • the message that is, until the small cell does not receive any of the above messages when releasing the served UE context, proceed to step 4.1 of step 4;
  • Step 3.2 If the small cell secondary carrier is turned off, the primary carrier of the small cell sends a deactivation command MAC CE to all UEs in the service, and then performs step 4.2 in step 4.
  • the MAC CE needs to correspond to the sequence number of the secondary carrier to be closed. The bit is set to 0.
  • Step 4 For the small cell to be turned off or the small cell secondary carrier is turned off, the processing is performed as follows:
  • Step 4.1 If the small cell is turned off, the small cell restores the switching parameters before the adjustment, and the small cell is in the off state. At this time, the small cell only sends the DRS.
  • Step 4.2 If the secondary carrier of the small cell is turned off, the small cell sets the secondary carrier to the off state after passing through the n subframes, where n is greater than or equal to 8, and the secondary carrier only sends the DRS.

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

Abstract

本发明公开了一种small cell从开到关的转换方法，提出了一种small cell场景下，通过在基站侧设定一个定时时间为T的定时器，在这个时间里监测small cell的资源利用情况或者业务负载状况或者对邻小区的干扰情况，从而决定是否触发small cell关断过程，并且在准备关断准备过程中增加了监测是否收到Handover Request/SN Status Transfer/Msg1消息，根据这些消息进一步判断是否关断small cell，并且Small cell还会根据收到Handover Request/SN Status Transfer/Msg1消息的时间来决定是否将其服务的UE全部切换到宏基站。本发明可以使Small cell智能的从开到关进行状态转换，以减轻对邻小区干扰从而提高系统容量和节省small cell的能耗，同时提升用户体验。

Description

一种small cell从开到关的转换方法 技术领域
本发明涉及的技术领域是无线通信领域，更具体地，本发明涉及3GPP LTE/LTE-A的一种small cell从开到关的转换方法。
背景技术
为了提高蜂窝移动网络的容量，减轻宏基站网络的压力，small cell被视为一种有效解决方案。因此，3GPP标准组织在R12阶段确立了small cell enhancement研究立项,进一步研究small cell的相关功能。
Small cell开/关技术属于该研究立项的内容，涉及到切换、载波聚合和双连接三大场景。在small cell部署场景中，small cell之间可能存在严重的干扰，为了减轻小区间干扰，提高系统性能，并且降低small cell功耗，提出了small cell开/关方案。因此可以在适当的条件下，实现对small cell的开启或关断，例如当small cell没有负载时可以将该small cell置于关状态，或者small cell负载较轻时，可以将该small cell服务的UE切换到其他小区，然后将该small cell置于关状态，这样能够减轻该small cell对其他小区的干扰，同时降低small cell的功耗；当其他小区负载较高时，可以开启某个处于关状态的small cell以进行负载均衡，从而提高系统容量，为用户提供更好的服务体验。
在研究的过程中，small cell从关到开状态转换比较容易实现，例如通过宏基站向small cell发送切换请求、添加载波和添加SeNB等方式来实现，但从开到关的状态转换则比较复杂。
因此，本发明针对以上问题，提出了一种解决small cell从开到关状态转换的方法。
关键词
3GPP 3Generation Partnership Project   第3代合作伙伴计划
LTE  Long Term Evolution               长期演进
SeNB Secondary eNB                     辅基站
DRS Discovery Reference Signal       发现参考信号
PRB Physical resource block          物理资源块
ocs cell specific offset of the serving cell  服务小区特定偏移
UE  user equipment                   用户设备
发明内容
本发明解决的技术问题：
Small cell如何智能的从开到关进行状态转换，以减轻对邻小区干扰从而提高系统容量和节省small cell的能耗。
解决该技术问题所采用的技术方案是：
一种small cell从开到关的转换方法，在Small cell设定一个定时时间为T的定时器，small cell启动该定时器，在时间T内，small cell统计空口资源利用率或者负载水平，当资源利用率过低或者负载水平过低时，调整切换参数或者发送去激活命令，使small cell服务的所有UE切换到临近宏基站或者small cell载波去激活其服务的所有UE，然后将small cell置于关状态。
包括以下步骤；
步骤一：small cell开启定时时间为T的定时器，在时间T内监测small cell的业务负载状况、资源利用情况或者对邻小区的干扰情况；其中业务负载状况包括上行负载水平或者小区容量，资源利用情况包括上行PRB利用情况，上行负载水平包括硬件负载或者S1TNL负载；
步骤二：small cell通过在时间T内监测业务、资源或者干扰情况，判断是否关闭small cell或者是关闭small cell辅载波；
步骤三：针对关闭small cell或者是关闭small cell辅载波，分别进行处理，如下：
(3.1)若关闭small cell，则small cell调整切换参数：包括small cell和宏基站是异频还是同频场景，如果是异频，提升A2事件门限，降低ocs，把small cell的UE切换到宏基站；如果是同频，提升测量开启门限S-measure，降低ocs；
切换参数调整后，同时small cell开始监测是否收到切换请求Handover Request/序号状态传输SN Status Transfer/Msg1消息,如果收到这些消息中的任一个消息，则调回切换参数，重启定时器，small cell继续处于开状态，并且如果这三种消息是在small cell收到宏基站发送的切换请求确认之前收到，那么small cell就不发送切换命令即不执行后面的切换流程，如果这三种消息是在small cell收到宏基站发送的切换请求确认之后才收到，那么small cell发送切换命令执行切换；如果没有收到上述任何消息，即直到small cell在释放完所服务的UE上下文时仍没有收到上述任何消息，则进行步骤四的(4.1)；
(3.2)若关闭small cell辅载波，则small cell的主载波向服务下的所有UE发送去激活命令MAC CE，然后进行步骤四的(4.2)，其中MAC CE里面把需要关闭的辅载波的序号对应的比特位设置为0；
步骤四：针对关闭small cell或者是关闭small cell辅载波，分别进行处理，如下：
(4.1)如果是关闭small cell,则small cell在释放完所服务的UE上下文后，恢复调整前的切换参数，small cell置于关状态，此时small cell只发送DRS；
(4.2)如果是关闭small cell的辅载波，则small cell在经过n个子帧后将这个辅载波置于关状态，其中n大于或者等于8，这个辅载波只发DRS。
所述步骤二包括以下过程：
(2.1)如果small cell或small cell辅载波监测的是资源利用情况即上行PRB利用率，设定上行PRB利用率门限值threshold1，small cell或small cell辅载波判断PRB利用情况，通过和设定的上行PRB利用率门限值threshold1比较，如果超过该门限值，则重启定时器，进入下一个时间T，small cell或small cell辅载波继续监测上行PRB利用率；
(2.2)如果small cell或small cell辅载波监测的是上行负载水平，其中上行负载水平包括硬件负载或者S1 TNL负载，如果监测到的上行负载水平超过LowLoad即取值为MediumLoad,HighLoad,Overload，则重启定时器T，进入下一个时间T，small cell或small cell辅载波继续监测；
(2.3)如果small cell或small cell辅载波监测的是小区容量，设定小区容量门限值为threshold2，如果监测到的小区容量值超过该门限值，则重启定时器，进入下一个时间T，small cell或small cell辅载波继续监测。
与现有技术相比，本发明具有以下创新点和有益效果：
1，提出的small cell关断机制可以很好的和small cell开启方法组成一个系统流程。
2，在small cell基站侧设定定时器，根据T时间段内small cell的性能来决定是否将其关断，避免只考虑small cell瞬时性能来决定是否将其关断，从而提升用户体验。
3，设定small cell空口资源利用率或者负载水平门限值，将small cell实际空口资源利用率或者负载水平与设定的门限值进行比较，从而来触发关断small cell。
4，当small cell决定调整切换参数，处于将状态转换为关的准备阶段时，仍然监测是否收到Handover Request/SN Status Transfer/Msg1消息，根据是否收到这些消息进一步判断是否关断small cell。
5，Small cell根据收到Handover Request/SN Status Transfer/Msg1消息的时间来决定是否将其服务的UE全部切换到宏基站。
附图说明
图1为切换场景时，small cell收到切换请求或业务请求先于Macro cell发给small cell的切换请求确认的示意图；
图2为切换场景时，small cell收到切换请求或业务请求后于Macro cell发给small cell的切换请求确认的示意图；
图3为small cell开关随时间变化的示意图；
图4切换场景时本发明的流程图。
具体实施方式
下面结合附图所示的实施例对本发明作进一步说明。
如图4所示，Small cell设定一个定时时间为T的定时器，small cell上电启动时开启定时器或small cell根据一定准则(即后面阐述的步骤)来开启定时器，在这段时间T内，small cell统计空口资源利用率或者负载水平。当资源利用率过低或者负载水平过低时，调整切换参数或者(给服务下的UE)发送去激活命令，使得small cell服务的所有UE切换到临近宏基站或者small cell载波去激活其服务的所有UE，然后将small cell置于关状态。具体的技术方案步骤如下：
步骤一：small cell开启定时器，在时间T内监测small cell的业务负载状况、资源利用情况或者对邻小区的干扰情况，其中资源利用情况可以是上行PRB利用情况，业务负载状况可以是上行负载水平或者小区容量，其中负载水平可以是硬件负载或者S1TNL负载。
步骤二：small cell通过在时间T内监测业务、资源或者干扰情况，判断是否关闭small cell或者是关闭small cell载波,实现步骤参见步骤2.1—2.3。
步骤2.1：如果small cell或small cell辅载波监测的是资源利用情况即上行PRB利用率，设定上行PRB利用率门限值threshold，small cell或small cell辅载波判断PRB利用情况，通过和设定的上行PRB利用率门限值threshold比较，如果超过该门限值，则重启定时器T，进入下一个时间T，small cell或small cell辅载波继续监测上行PRB利用率；
步骤2.2：如果small cell或small cell辅载波监测的是上行负载水平，其中上行负载水平可以是硬件负载或者S1TNL负载，如果监测到的上行负载水平超过LowLoad即取值为MediumLoad,HighLoad,Overload，则重启定时器T，进入下一个时间T，small cell或small cell辅载波继续监测；
步骤2.3：如果small cell或small cell辅载波监测的是小区容量，设定小区容量门限值为threshold，如果监测到的小区容量值超过该门限值，则重启定时器T，进入下一个时间T，small cell或small cell辅载波继续监测。
步骤三：针对关闭small cell或者是关闭small cell辅载波，分别进行处理， 如下：
步骤3.1：如果是关闭small cell，则small cell调整切换参数,这里分small cell和宏基站是异频还是同频场景，如果是异频，提升A2事件门限，降低ocs，把small cell的UE切换到宏基站；如果是同频，提升测量开启门限(S-measure)，降低ocs。
切换参数调整后，同时small cell开始监测是否收到Handover Request(切换请求)/SN Status Transfer(序号状态传输)/Msg1消息,如果收到这些消息中的任一个消息，则调回切换参数，重启T，small cell继续处于开状态，并且如果这三种消息是在small cell收到宏基站发送的切换请求确认之前收到(如图1所示)，那么small cell就不发送切换命令即不执行后面的切换流程，如果这三种消息是在small cell收到宏基站发送的切换请求确认之后才收到(如图2所示)，那么small cell发送切换命令执行切换；如果没有收到上述任何消息，即直到small cell在释放完所服务的UE上下文时仍没有收到上述任何消息，则进行步骤四的4.1；
步骤3.2:如果是关闭small cell辅载波，则small cell的主载波向服务下的所有UE发送去激活命令MAC CE，然后进行步骤四的4.2，其中MAC CE里面把需要关闭的辅载波的序号对应的比特位设置为0。
步骤四：针对关闭small cell或者是关闭small cell辅载波，分别进行处理，如下：
步骤4.1、如果是关闭small cell,则small cell在释放完所服务的UE上下文后，恢复调整前的切换参数，small cell置于关状态，此时small cell只发送DRS；
步骤4.2、如果是关闭small cell的辅载波，则small cell在经过n个子帧后将这个辅载波置于关状态，其中n大于或者等于8，这个辅载波只发DRS。

Claims (3)

  1. 一种small cell从开到关的转换方法，其特征在于：在Small cell设定一个定时时间为T的定时器，small cell启动该定时器，在时间T内，small cell统计空口资源利用率或者负载水平，当资源利用率过低或者负载水平过低时，调整切换参数或者发送去激活命令，使small cell服务的所有UE切换到临近宏基站或者small cell载波去激活其服务的所有UE，然后将small cell置于关状态。
  2. 根据权利要求1所述的一种small cell从开到关的转换方法，其特征在于：包括以下步骤；
    步骤一：small cell开启定时时间为T的定时器，在时间T内监测small cell的业务负载状况、资源利用情况或者对邻小区的干扰情况；其中业务负载状况包括上行负载水平或者小区容量，资源利用情况包括上行PRB利用情况，上行负载水平包括硬件负载或者S1TNL负载；
    步骤二：small cell通过在时间T内监测业务、资源或者干扰情况，判断是否关闭small cell或者是关闭small cell辅载波；
    步骤三：针对关闭small cell或者是关闭small cell辅载波，分别进行处理，如下：
    (3.1)若关闭small cell，则small cell调整切换参数：包括small cell和宏基站是异频还是同频场景，如果是异频，提升A2事件门限，降低ocs，把small cell的UE切换到宏基站；如果是同频，提升测量开启门限S-measure，降低ocs；
    切换参数调整后，同时small cell开始监测是否收到切换请求Handover Request/序号状态传输SN Status Transfer/Msg1消息,如果收到这些消息中的任一个消息，则调回切换参数，重启定时器，small cell继续处于开状态，并且如果这三种消息是在small cell收到宏基站发送的切换请求确认之前收到，那么small cell就不发送切换命令即不执行后面的切换流程，如果这三种消息是在small cell收到宏基站发送的切换请求确认之后才收到，那么small cell发送切换命令执行切换；如果没有收到上述任何消息，即直到small cell在释放完所服 务的UE上下文时仍没有收到上述任何消息，则进行步骤四的(4.1)；
    (3.2)若关闭small cell辅载波，则small cell的主载波向服务下的所有UE发送去激活命令MAC CE，然后进行步骤四的(4.2)，其中MAC CE里面把需要关闭的辅载波的序号对应的比特位设置为0；
    步骤四：针对关闭small cell或者是关闭small cell辅载波，分别进行处理，如下：
    (4.1)如果是关闭small cell,则small cell在释放完所服务的UE上下文后，恢复调整前的切换参数，small cell置于关状态，此时small cell只发送DRS；
    (4.2)如果是关闭small cell的辅载波，则small cell在经过n个子帧后将这个辅载波置于关状态，其中n大于或者等于8，这个辅载波只发DRS。
  3. 根据权利要求2所述的一种small cell从开到关的转换方法，其特征在于：
    所述步骤二包括以下过程：
    (2.1)如果small cell或small cell辅载波监测的是资源利用情况即上行PRB利用率，设定上行PRB利用率门限值threshold1，small cell或small cell辅载波判断PRB利用情况，通过和设定的上行PRB利用率门限值threshold1比较，如果超过该门限值，则重启定时器，进入下一个时间T，small cell或small cell辅载波继续监测上行PRB利用率；
    (2.2)如果small cell或small cell辅载波监测的是上行负载水平，其中上行负载水平包括硬件负载或者S1TNL负载，如果监测到的上行负载水平超过LowLoad即取值为MediumLoad,HighLoad,Overload，则重启定时器T，进入下一个时间T，small cell或small cell辅载波继续监测；
    (2.3)如果small cell或small cell辅载波监测的是小区容量，设定小区容量门限值为threshold2，如果监测到的小区容量值超过该门限值，则重启定时器，进入下一个时间T，small cell或small cell辅载波继续监测。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114077213A (zh) * 2020-08-21 2022-02-22 大唐移动通信设备有限公司 节能控制方法及装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104202764B (zh) * 2014-09-24 2017-09-29 武汉虹信通信技术有限责任公司 一种small cell从开到关的转换方法
CN107466071B (zh) * 2017-07-14 2020-03-03 中国联合网络通信集团有限公司 一种网络负载均衡方法及接入网设备
CN114390646B (zh) * 2020-10-19 2024-05-24 中国移动通信集团重庆有限公司 Nsa基站节能方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2453706A1 (en) * 2010-11-16 2012-05-16 Alcatel Lucent A small cell base station for wirless telecommuncations, and a method of switching between states
CN103648112A (zh) * 2013-12-20 2014-03-19 中国移动通信集团江苏有限公司无锡分公司 一种蜂窝网络中小小区基站开启/关闭状态转换的方法
US20140126438A1 (en) * 2012-11-02 2014-05-08 Research In Motion Limited Wireless communication in heterogeneous networks
CN104202764A (zh) * 2014-09-24 2014-12-10 武汉虹信通信技术有限责任公司 一种small cell 从开到关的转换方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2453706A1 (en) * 2010-11-16 2012-05-16 Alcatel Lucent A small cell base station for wirless telecommuncations, and a method of switching between states
US20140126438A1 (en) * 2012-11-02 2014-05-08 Research In Motion Limited Wireless communication in heterogeneous networks
CN103648112A (zh) * 2013-12-20 2014-03-19 中国移动通信集团江苏有限公司无锡分公司 一种蜂窝网络中小小区基站开启/关闭状态转换的方法
CN104202764A (zh) * 2014-09-24 2014-12-10 武汉虹信通信技术有限责任公司 一种small cell 从开到关的转换方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
FIBERHOME TECHNOLOGIES GROUP: "Load Aware Assisted Cell (Re) Selection for Small Cell Deployments", R2-132291, VOLUME/, NUMBER, 23 August 2013 (2013-08-23) *
ZTE: "Further Considerations on Enhanced Transition Procedures of Small Cell on/off Scheme", R1-135350, VOLUME/, NUMBER, 15 November 2013 (2013-11-15) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114077213A (zh) * 2020-08-21 2022-02-22 大唐移动通信设备有限公司 节能控制方法及装置
CN114077213B (zh) * 2020-08-21 2023-11-03 大唐移动通信设备有限公司 节能控制方法及装置

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