WO2018166290A1 - 切换小区的方法和装置 - Google Patents

切换小区的方法和装置 Download PDF

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Publication number
WO2018166290A1
WO2018166290A1 PCT/CN2018/072317 CN2018072317W WO2018166290A1 WO 2018166290 A1 WO2018166290 A1 WO 2018166290A1 CN 2018072317 W CN2018072317 W CN 2018072317W WO 2018166290 A1 WO2018166290 A1 WO 2018166290A1
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Prior art keywords
handover
network element
cell
wireless network
channel quality
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PCT/CN2018/072317
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English (en)
French (fr)
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史莉荣
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中兴通讯股份有限公司
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Publication of WO2018166290A1 publication Critical patent/WO2018166290A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0083Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835Determination of neighbour cell lists
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters
    • H04W36/30Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/34Reselection control
    • H04W36/36Reselection control by user or terminal equipment

Definitions

  • the present disclosure relates to the field of mobile communications, for example, to a method and apparatus for handover of a cell.
  • the 1000 times of business growth has become the biggest driving force for the evolution of the fourth generation of mobile telecommunications technology (4G) system.
  • 4G mobile telecommunications technology
  • 5G mobile telecommunications technology
  • the history of mobile communications shows that cell splitting, greater bandwidth, and higher spectral efficiency are the three pillars of system capacity improvement.
  • HetNet Heterogeneous Network
  • the ultra-dense network in 5G can be regarded as an evolution of Small Cell enhancement technology.
  • TP density will increase, TP coverage will shrink, and each TP will serve only one or a few terminals at the same time.
  • the ultra-dense deployment brings the distance between the TP and the terminal closer, so that their transmit power can be greatly reduced and become very close, and the difference between the uplink and the downlink is also smaller.
  • a method for switching a cell comprising:
  • the user equipment detects, according to the received measurement configuration information, a channel quality of the serving cell where the user equipment is located and a channel quality of the at least one neighboring cell;
  • the user equipment determines, as the target handover cell, a neighboring cell with the best channel quality in the at least one neighboring cell, if the channel quality of the at least one neighboring cell exceeds the channel quality of the serving cell. ;as well as
  • the user equipment sends a handover command to the source radio network element corresponding to the serving cell, so that the source radio network element performs a process of switching the serving cell of the user equipment, where the handover command carries The information of the target radio network element corresponding to the target handover cell.
  • the user equipment receives the handover complete message sent by the source wireless network element, where the source wireless network element completes the handover process.
  • the detecting, by the user equipment, the channel quality of the at least one neighboring cell according to the received measurement configuration information includes:
  • the source wireless network element performs a handover process according to the information of the target wireless network element, including:
  • the source wireless network element sends a handover request message to the core network control plane entity, where the handover request carries the bearer context information;
  • the source wireless network element receives a handover response message from the core network control plane entity.
  • a device for switching a cell comprising:
  • a detecting module configured to detect, according to the received measurement configuration information, a channel quality of the serving cell where the user equipment is located and a channel quality of the at least one neighboring cell;
  • a determining module configured to determine, in a case where the detected channel quality of the at least one neighboring cell exceeds a channel quality of the serving cell, a neighboring cell with the best channel quality in the at least one neighboring cell as a target handover Community;
  • the device further includes:
  • the message receiving module is configured to receive a handover complete message sent by the source wireless network element if the source wireless network element completes the handover process.
  • the device wherein
  • the detecting module is configured to: determine whether the current quantity of the neighboring cell whose channel quality exceeds the preset measurement threshold exceeds a preset number, and stop detecting the neighboring cell if the current quantity reaches the preset quantity. Channel quality.
  • a device for switching a cell comprising:
  • the command receiving module is configured to receive a handover command sent by the user equipment, where the handover command carries information about a target wireless network element corresponding to the target handover cell;
  • the switching module is configured to perform a handover process according to the information of the target wireless network element to complete cell handover of the user equipment.
  • the switching module includes:
  • a detecting unit configured to detect whether a direct connection port exists between the target wireless network element and the target wireless network element
  • a first switching unit configured to send, to the target wireless network element, a handover request message, where the handover request carries the target wireless network element to a core network control plane a bearer context information required when the entity sends the path switch request; after completing the handover, receiving a handover response message from the target wireless network element;
  • a computer readable storage medium storing computer executable instructions arranged to perform the above method.
  • a user terminal comprising:
  • At least one first processor At least one first processor
  • the first memory stores instructions executable by the at least one first processor, the instructions being executed by the at least one first processor to cause the at least one first processor to execute the user terminal execution Methods.
  • a source wireless network element including:
  • FIG. 1 is a flow chart of a method for handover of a cell in an embodiment
  • FIG. 2 is a flowchart of a method for handover of a cell in another embodiment
  • FIG. 3 is a schematic structural diagram of an apparatus for switching a cell in an embodiment
  • FIG. 4 is a schematic structural diagram of an apparatus for switching a cell in another embodiment
  • FIG. 5 is a schematic structural diagram of a device switching module for switching a cell in another embodiment
  • FIG. 6 is a message flow chart of UE autonomous handover in an embodiment
  • FIG. 7 is a flow chart of transmitting a handover command through a wireless network unit interface in an embodiment
  • FIG. 8 is a flow chart of transmitting a handover command through a wireless network unit and a core network control plane entity interface in an embodiment
  • FIG. 9 is a schematic diagram showing the hardware structure of a UE in an embodiment
  • FIG. 10 is a schematic diagram showing the hardware structure of a source wireless network element in an embodiment.
  • the heterogeneous network changes the topology of the cellular network in the related technology. Multiple sites with different transmit powers and coverages are deployed in the system, which makes the network deployment more flexible.
  • heterogeneous networks also pose some challenges to system design, and the network structure brings a series of problems. Adding a large number of overlapping coverage sites within the coverage of the macro base station may increase excessive "cell edge", thus increasing the complexity of mobility management, for example, increasing the complexity of cell reselection and cell handover.
  • the cell reselection refers to a process in which a user equipment (User Equipment, UE) in an idle state (Idle) is transferred from one cell to another.
  • the cell reselection is a behavior of the UE autonomously, and the UE selects a new serving cell that satisfies the cell reselection condition according to the channel quality measurement result of the serving cell and the neighboring cell.
  • Cell handover refers to a process in which a UE in a connected state transfers from one cell to another.
  • a cell handover method of "UE assisted, network decision” is adopted in the relevant standard.
  • “UE assisted” means that the base station performs the handover decision with reference to the channel quality reported by the UE.
  • the UE monitors the channel quality of the serving cell and the neighboring cell. When the channel of the serving cell and the neighboring cell is found to meet certain conditions, the UE reports the measurement result to the evolved base station (evolved Nobe Base, eNB).
  • the "network decision” refers to whether the eNB decides whether to switch the UE to another cell according to the measurement result reported by the UE.
  • An embodiment provides a method for switching a cell, where the method can be performed by a user equipment, and the process of the method is as shown in FIG. 1, and may include steps 102 to 106.
  • step 102 the user equipment detects the channel quality of the serving cell where the user equipment is located and the channel quality of the at least one neighboring cell according to the received measurement configuration information.
  • step 104 if the detected channel quality of the at least one neighboring cell exceeds the channel quality of the serving cell, the user equipment determines the neighboring cell with the best channel quality in the at least one neighboring cell as the target handover cell.
  • step 106 the user equipment sends a handover command to the source radio network element corresponding to the serving cell, so that the source radio network element performs the handover process, where the handover command carries the information of the target radio network element corresponding to the target handover cell.
  • the user equipment compares the channel quality of the at least one neighboring cell with the channel quality of the serving cell, and the user equipment may detect at least the quality of the channel when the channel quality exceeds the channel quality of the serving cell.
  • the neighboring cell with the best channel quality is selected as the target handover cell in a neighboring cell, and the handover command is sent to the source radio network element corresponding to the serving cell to enable the source radio network element to perform handover according to the target cell selected by the user equipment.
  • the user equipment actively switches during the whole process, and the process is simple, and the UE autonomous handover process is implemented.
  • the user equipment may detect channel quality of all neighboring cells, or may only detect a part of neighboring cells in all neighboring cells. Channel quality.
  • the user equipment determines whether the current number of neighboring cells whose channel quality exceeds the preset measurement threshold reaches a preset number. If the current quantity reaches a preset number, the channel quality of the neighboring cell may be stopped.
  • the foregoing preset measurement threshold value may be obtained according to an experimental measurement, and can ensure that the user equipment has a threshold value of a superior transmission channel. After the detected number of neighboring cells whose channel quality exceeds the preset measurement threshold reaches a preset number, the detected channel quality may be compared with the channel quality of the cell where the user equipment is located, and the cell is compared according to the comparison result. Switch.
  • An embodiment provides a method for switching a cell, where the method can be performed by a source radio network element.
  • the process of the method is as shown in FIG. 2, including steps 202 to 204.
  • the source radio network element receives the handover command sent by the user equipment, where the handover command carries the information of the target radio network element corresponding to the target handover cell.
  • the detecting unit 210 is arranged to detect whether there is a direct connection between the target wireless network element.
  • the first switching unit 211 is coupled to the detecting unit 210 and configured to send a handover request message to the target wireless network element in the presence of the direct connection port, where the handover request carries the target wireless network element to the core network control plane entity.
  • the second switching unit 212 is coupled to the detecting unit 210, and configured to send a handover request message to the core network control plane entity in the absence of the direct connection interface, where the handover request carries the bearer context information; Receiving a handover response message from the core network control plane entity.
  • An embodiment provides a method for UE autonomous handover, that is, "UE decision", that is, the UE selects a new service that satisfies the cell handover condition according to the channel quality measurement result of the serving cell (ie, the serving cell where the user terminal is located) and the neighboring cell.
  • the cell performs handover.
  • FIG. 6 is a message flow of a UE autonomous handover in an embodiment.
  • the method for UE autonomous handover includes the following steps 602 to 610.
  • the source radio network unit ie, the source radio network element
  • the measurement configuration information includes the measured physical quantity and the measurement threshold.
  • the measured physical quantity can be the reference signal received power, or the pilot strength.
  • the measurement threshold can be either an absolute threshold or a relative threshold.
  • the physical quantity measured by the UE is compared with an absolute threshold value, and when the comparison result meets the preset condition, the condition is considered to be satisfied.
  • the difference between the physical quantity measured by the UE and the physical quantity of the serving cell is compared with a relative threshold, and when the comparison result meets the preset condition, the condition is considered to be satisfied.
  • the measurement configuration message may further include a number of cells, which indicates a maximum value of the measured physical layer and the measurement threshold compared to the number of cells that reach the preset condition.
  • the decision process of the UE autonomous handover includes: the UE measures the transmit node that can be detected by the periphery; and selects the node with the best channel quality among the eligible transmit nodes as the target node of the handover.
  • step 606 the UE sends a handover command to the source radio network unit, where the handover command includes information of the target radio network unit (ie, the target radio network element).
  • the source wireless network unit has a direct interface with the target wireless network unit, and according to whether there is a direct interface, the decision is whether to directly send the handover message to the target wireless network unit or to the core network control plane entity.
  • the source wireless network unit and the target wireless network unit have a direct interface, and the decision directly sends the handover message to the target wireless network unit.
  • FIG. 7 is a flow of sending a handover command through the wireless network unit interface in the embodiment. Includes the following steps.
  • step 702 the source wireless network unit sends a handover request message to the target wireless network unit, where the message includes bearer context information.
  • step 704 the target wireless network unit sends a path switch request message to the core network control plane entity, where the message includes bearer context information.
  • the target wireless network unit sends a handover response message to the source wireless network unit, where the message includes the allocated radio bearer information, and the bearer context information is saved.
  • FIG. 8 is a flowchart of sending a handover command through a wireless network unit and a core network control plane entity interface in an embodiment, where the flow includes the following steps.
  • step 802 the source wireless network unit sends a handover request message to the core network control plane entity, where the message includes bearer context information.
  • step 804 the core network control plane entity sends a handover request message to the target wireless network unit, where the message includes bearer context information.
  • the target radio network unit performs resource allocation, and sends a handover response message to the core network control plane entity, where the response message includes the allocated radio bearer information.
  • step 808 the core network control plane entity modifies and bears the radio network unit.
  • the core network control plane entity sends a handover response message to the source radio network unit, where the response message includes radio bearer information allocated by the target radio network unit.
  • the source wireless network unit sends measurement configuration information to the UE, where the measurement configuration information includes a measurement quality physical quantity and a measurement threshold value;
  • the source wireless network unit performs a handover procedure.
  • the method for autonomous handover of the UE is applied to a user equipment, and the method for autonomous handover of the UE includes:
  • the UE Receiving, by the UE, measurement configuration information sent by the source wireless network unit, where the measurement configuration information includes a measurement quality physical quantity and a measurement threshold value;
  • the UE sends a handover command to the source wireless network unit, where the handover command includes information of the target wireless network unit.
  • the UE autonomous handover method reduces the air interface message, simplifies the handover process, and can configure the handover parameter based on the UE, and conforms to the UE-centric development trend in the communication.
  • An embodiment provides a computer readable storage medium storing computer executable instructions arranged to perform the method of any of the above embodiments.
  • An embodiment provides a schematic diagram of a hardware structure of a UE.
  • the UE includes:
  • At least one first processor 90 which is exemplified by a first processor 90 in FIG. 9; a first memory 91; and a first communication interface 92 and a first bus 93.
  • the first processor 90, the first memory 91, and the first communication interface 92 can complete communication with each other through the first bus 93.
  • the first processor 90 can invoke the logic instructions in the first memory 91 to perform the method performed by the UE in the above embodiments.
  • logic instructions in the first memory 91 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium.
  • the first memory 91 is a computer readable storage medium and can be used to store a software program, a computer executable program, such as a program instruction or a module corresponding to the method executed by the UE in the above embodiment.
  • the first processor 90 executes the function application and the data processing by executing a software program, an instruction or a module stored in the first memory 91, that is, the method performed by the UE in the above embodiment.
  • the first memory 91 may include a storage program area that stores an operating system, an application required for at least one function, and a storage data area that stores data created according to use of the terminal device, and the like. Further, the first memory 91 may include a high speed random access memory, and may also include a nonvolatile memory.
  • the source wireless network element includes:
  • At least one second processor 1000 which is exemplified by a second processor 1000 in FIG. 10; a second memory 1001; and a second communication interface 1002 and a second bus 1003.
  • the second processor 1000, the second memory 1001, and the second communication interface 1002 can complete communication with each other through the second bus 1003.
  • the second processor 1000 can invoke the logic instructions in the second memory 1001 to perform the method performed by the source wireless network element in the above embodiments.
  • logic instructions in the second memory 1001 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium.
  • the second memory 1001 is a computer readable storage medium, and can be used to store a software program, a computer executable program, such as a program instruction or a module corresponding to a method performed by a source wireless network element in the above embodiment.
  • the second processor 1000 performs a function application and data processing by executing a software program, an instruction or a module stored in the second memory 1001, that is, a method of implementing the source wireless network element in the above embodiment.
  • the second memory 1001 may include a storage program area and an storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to usage of the terminal device, and the like. Further, the second memory 1001 may include a high speed random access memory, and may further include a nonvolatile memory.

Abstract

一种切换小区的方法包括:用户设备根据接收到的测量配置信息检测所述用户设备所在服务小区的信道质量和至少一个邻小区的信道质量;在检测到的至少一个邻小区中存在信道质量超过服务小区的信道质量的情况下,用户设备将至少一个邻小区中信道质量最优的邻小区确定为目标切换小区;以及用户设备向服务小区对应的源无线网元发送切换命令,以使源无线网元执行切换过程,其中,切换命令中携带有目标切换小区对应的目标无线网元的信息。

Description

切换小区的方法和装置 技术领域
本公开涉及移动通讯领域,例如,涉及一种切换小区的方法和装置。
背景技术
随着智能手机等移动终端的普及,移动通信的业务量经历了爆炸式的增长。业界普遍认为,随着超高清视频、虚拟现实等新应用的出现及普及,移动通信的业务量将以指数方式增长,在一些热点地区,将超过1000倍。
1000倍的业务量增长成为驱动第四代移动通信(fourth generation of mobile telecommunications technology,4G)系统演进的最大动力。为了满足这一需求,第五代移动通信(fifth generation of mobile telecommunications technology,5G)系统提出了极具挑战的1000倍容量提升的目标。移动通信的发展历史表明,小区分裂、更大的带宽以及更高的频谱效率是系统容量提升的三大支柱。
随着小区分裂技术的发展,低功率传输节点(Transmission Point,TP)被灵活的、稀疏的部署在宏小区(Macro Cell)覆盖区域之内,形成了由宏小区和小小区(Small Cell)组成的多层异构网络(Heterogeneous Network,HetNet)。HetNet可以在保证覆盖的同时提高小区分裂的灵活性及系统容量,分担宏小区的业务压力,还可以扩大宏小区的覆盖范围。在4G系统研究的末期,为了提高系统容量,第三代合作伙伴计划(Third Generation Partnership Project,3GPP)提出了小小区(Small Cell)增强技术,对高密度部署时出现的问题展开了初步的研究。
5G中的超密集网络可以看作是小小区(Small Cell)增强技术的演进。在超密集网络中,TP密度将提高,TP的覆盖范围缩小,每个TP同时只服务一个或很少的几个终端。超密集部署拉近了TP与终端的距离,使得他们的发射功率可以大大降低,且变得非常接近,上、下行链路的差别也因此越来越小。
发明内容
切换小区的方法和装置,能够实现UE自主切换过程。
一种切换小区的方法,包括:
用户设备根据接收到的测量配置信息检测所述用户设备所在服务小区的信道质量和至少一个邻小区的信道质量;
在检测到的所述至少一个邻小区中存在信道质量超过所述服务小区的信道质量的情况下,所述用户设备将所述至少一个邻小区中信道质量最优的邻小区确定为目标切换小区;以及
所述用户设备向所述服务小区对应的源无线网元发送切换命令,以使所述源无线网元执行切换所述用户设备的所述服务小区的过程,其中,所述切换命令中携带有所述目标切换小区对应的目标无线网元的信息。
一实施例中,所述用户设备向所述服务小区对应的源无线网元发送切换命令之后,所述方法还包括:
在所述源无线网元完成切换过程的情况下,所述用户设备接收所述源无线网元发送的切换完成消息。
一实施例中,所述用户设备根据接收到的所述测量配置信息检测所述至少一个邻小区的信道质量,包括:
所述用户设备判断信道质量超过预设测量门限值的邻小区的当前数量是否达到预设数量;以及
在所述当前数量达到所述预设数量的情况下,所述用户设备停止检测邻小区的信道质量。
一种切换小区的方法,包括:
源无线网元接收用户设备发送的切换命令,其中,所述切换命令中携带有目标切换小区对应的目标无线网元的信息;以及
所述源无线网元根据所述目标无线网元的信息执行切换过程,以完成所述用户设备的小区切换。
一实施例中,所述源无线网元根据所述目标无线网元的信息执行切换过程,包括:
所述源无线网元检测与所述目标无线网元之间是否存在直连接口;
在存在所述直连接口的情况下,所述源无线网元向所述目标无线网元发送切换请求消息,其中,所述切换请求中携带有所述目标无线网元向核心网控制面实体发送所述路径转换请求时需要的承载上下文信息;在完成切换后,所述源无线网元接收来自所述目标无线网元的切换响应消息;以及
在不存在所述直连接口的情况下,所述源无线网元向所述核心网控制面实体发送切换请求消息,其中,所述切换请求中携带有所述承载上下文信息;在完成切换后,所述源无线网元接收来自所述核心网控制面实体的切换响应消息。
一种切换小区的装置,包括:
检测模块,设置为根据接收到的测量配置信息检测所述用户设备所在服务小区的信道质量和至少一个邻小区的信道质量;
确定模块,设置为在检测到的所述至少一个邻小区中存在信道质量超过所述服务小区的信道质量的情况下,将所述至少一个邻小区中信道质量最优的邻小区确定为目标切换小区;以及
发送模块,设置为向所述服务小区对应的源无线网元发送切换命令,以使所述源无线网元执行切换过程,其中,所述切换命令中携带有所述目标切换小区对应的目标无线网元的信息。
一实施例中,所述的装置,还包括:
消息接收模块,设置为在所述源无线网元完成切换过程的情况下,接收所述源无线网元发送的切换完成消息。
一实施例中,所述的装置,其中,
所述检测模块设置为:判断信道质量超过预设测量门限值的邻小区的当前数量是否达到预设数量,并在所述当前数量达到所述预设数量的情况下,停止检测邻小区的信道质量。
一种切换小区的装置,包括:
命令接收模块,设置为接收用户设备发送的切换命令,其中,所述切换命令中携带有目标切换小区对应的目标无线网元的信息;以及
切换模块,设置为根据所述目标无线网元的信息执行切换过程,以完成所 述用户设备的小区切换。
一实施例中,所述切换模块包括:
检测单元,设置为检测与所述目标无线网元之间是否存在直连接口;
第一切换单元,设置为在存在所述直连接口的情况下,向所述目标无线网元发送切换请求消息,其中,所述切换请求中携带有所述目标无线网元向核心网控制面实体发送所述路径转换请求时需要的承载上下文信息;在完成切换后,接收来自所述目标无线网元的切换响应消息;以及
第二切换单元,设置为在不存在所述直连接口的情况下,向所述核心网控制面实体发送切换请求消息,其中,所述切换请求中携带有所述承载上下文信息;在完成切换后,接收来自所述核心网控制面实体的切换响应消息。
一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令设置为执行上述方法。
一种用户终端,包括:
至少一个第一处理器;以及
与所述至少一个第一处理器通信连接的第一存储器;其中,
所述第一存储器存储有可被所述至少一个第一处理器执行的指令,所述指令被所述至少一个第一处理器执行,以使所述至少一个第一处理器执行上述用户终端执行的方法。
一种源无线网元,包括:
至少一个第二处理器;以及
与所述至少一个第二处理器通信连接的第二存储器;其中,
所述第二存储器存储有可被所述至少一个第二处理器执行的指令,所述指令被所述至少一个第二处理器执行,以使所述至少一个第二处理器执行上述源无线网元执行的方法。
附图说明
图1是一实施例中切换小区的方法的流程图;
图2是另一实施例中切换小区的方法的流程图;
图3是一实施例中切换小区的装置的结构示意图;
图4是另一实施例中切换小区的装置的结构示意图;
图5是另一实施例中切换小区的装置切换模块的结构示意图;
图6是一实施例中UE自主切换的消息流程图;
图7是一实施例中通过无线网络单元接口发送切换命令的流程图;
图8是一实施例中通过无线网络单元和核心网控制面实体接口发送切换命令的流程图;
图9是一实施例中UE的硬件结构示意图;以及
图10是一实施例中源无线网元的硬件结构示意图。
具体实施方式
异构网改变了相关技术中蜂窝网络的拓扑结构,系统中同时部署了多个具有不同发射功率和覆盖范围的站点,使得网络部署更加灵活。但是,异构网也对系统设计带来了一些挑战,网络结构所带来了一系列问题。在宏基站的覆盖范围内增加了大量重叠覆盖的站点,可能增加过多的“小区边缘”,因此可能增加移动性管理的复杂度,例如增加了小区重选与小区切换的复杂度。
其中,小区重选是指处于空闲状态(Idle)的用户终端(User Equipment,UE)从一个小区转移到另一个小区的过程。小区重选是UE自主的行为,UE根据服务小区和邻小区的信道质量测量结果,选择满足小区重选条件的新服务小区。小区切换是指处于连接状态下的UE从一个小区转移到另一个小区的过程。相关标准中采用是“UE辅助、网络决策”的小区切换方法。“UE辅助”,是指基站进行切换判决的时候要参考UE上报的信道质量。UE监测服务小区和邻小区的信道质量,当发现服务小区和邻小区的信道满足一定条件的时候,UE向演进型基站(evolved Nobe Base,eNB)上报测量结果。“网络决策”,是指eNB根据UE上报的测量结果,决定是否将该UE切换到其他小区。
在5G的研究中,为了能够简化小区切换过程,提出了采取“UE自主切换”,然而却没有对UE主动切换的过程进行说明,无法实现UE自主切换过程。
以下实施例提供了切换小区的方法和装置,以下结合附图以及实施例,对技术方案进行说明。
一实施例提供了一种切换小区的方法,该方法可以由用户设备执行,该方法的流程如图1所示,可以包括步骤102至106。
步骤102中,用户设备根据接收到的测量配置信息检测用户设备所在服务小区的信道质量和至少一个邻小区的信道质量。
步骤104中,在检测到的至少一个邻小区中存在信道质量超过服务小区的信道质量的情况下,用户设备将至少一个邻小区中信道质量最优的邻小区确定为目标切换小区。
步骤106中,用户设备向服务小区对应的源无线网元发送切换命令,以使源无线网元执行切换过程,其中,切换命令中携带有目标切换小区对应的目标无线网元的信息。
上述实施例中,用户设备将至少一个邻小区的信道质量和所在服务小区的信道质量进行比较,用户设备发现存在信道质量超过所在服务小区的信道质量的邻小区时,可以从检测信道质量的至少一个邻小区中选择信道质量最优的那个邻小区作为目标切换小区,并主动向所在服务小区对应的源无线网元发送切换命令,来让源无线网元根据用户设备选择的目标切换小区来执行切换过程,整个过程用户设备主动切换,过程简单,实现UE自主切换过程。
一实施例中,在用户设备向所在服务小区对应的源无线网元发送切换命令之后,源无线网元执行切换过程,将用户设备由源无线网元切换到目标无线网元;在源无线网元完成切换过程的情况下,用户设备接收源无线网元发送的切换完成消息,用户设备可以使用目标无线网元的信道收发信息。
一实施例中,在用户设备根据接收到的测量配置信息检测至少一个邻小区的信道质量的过程中,用户设备可以检测所有邻小区的信道质量,也可以只检测所有邻小区中的一部分邻小区的信道质量。一实施例中,用户设备判断信道质量超过预设测量门限值的邻小区的当前数量是否达到预设数量,如果当前数量达到预设数量,可以停止检测邻小区的信道质量。上述的预设测量门限值可以是根据实验测量得到的,能够保证用户设备具有较优的传输信道的一个门限值。当检测的信道质量超过预设测量门限值的邻小区的当前数量达到预设数量后,可以将检测到的这些信道质量与用户设备所在小区的信道质量进行比较, 并根据比较结果来进行小区切换。
一实施例提供了一种切换小区的方法,该方法可以由源无线网元执行,该方法的流程如图2所示,包括步骤202至204。
步骤202中,源无线网元接收用户设备发送的切换命令,其中,切换命令中携带有目标切换小区对应的目标无线网元的信息。
步骤204中,源无线网元根据目标无线网元的信息执行切换过程,以完成用户设备的小区切换。
一实施例中,源无线网元在接收到用户设备发送的切换命令时,根据该切换命令中携带的目标切换小区对应的目标无线网元的信息来执行切换过程,在切换的过程中,源无线网元检测与目标无线网元之间是否存在直连接口。
一实施例中,在存在直连接口的情况下,源无线网元和目标无线网元之间可以直接通信,源无线网元向目标无线网元发送切换请求消息,其中,切换请求中携带有目标无线网元向核心网控制面实体发送路径转换请求时需要的承载上下文信息;在完成切换后,源无线网元接收来自目标无线网元的切换响应消息。
一实施例中,在不存在直连接口的情况下,源无线网元和目标无线网元之间无法直接通信,源无线网元向核心网控制面实体发送切换请求消息,其中,切换请求中携带有承载上下文信息;在完成切换后,源无线网元接收来自核心网控制面实体的切换响应消息。
一实施例提供了一种切换小区的装置,该装置可以设置在用户设备中,该装置的结构如图3所示,切换小区的装置包括:检测模块10、确定模块11以及发送模块12。
检测模块10设置为根据接收到的测量配置信息检测所在小区的信道质量和至少一个邻小区的信道质量。
确定模块11,与检测模块10耦合,设置为在检测到的至少一个邻小区中存在信道质量超过所在小区的信道质量的情况下,确定将至少一个邻小区中信道质量最优的邻小区作为目标切换小区。
发送模块12,与确定模块11耦合,设置为向用户设备所在的服务小区对应的源无线网元发送切换命令,以使源无线网元执行切换过程,其中,切换命令中携带有目标切换小区对应的目标无线网元的信息。
图3所示实施例中的切换小区的装置,将至少一个邻小区的信道质量和服务小区的信道质量进行比较,当存在信道质量超过所在小区的信道质量的邻小区时,可以从检测信道质量的至少一个邻小区中选择信道质量最优的那个邻小区,将该邻小区作为目标切换小区,并主动向服务小区对应的源无线网元发送切换命令,来让源无线网元根据用户设备选择的目标切换小区来执行切换过程,切换过程简单,实现UE自主切换过程。
一实施例中,上述切换小区的装置还可以包括:消息接收模块13。消息接收模块13与发送模块12耦合,消息接收模块13设置为在源无线网元完成切换过程的情况下,接收源无线网元发送的切换完成消息。
一实施例中,检测模块10可以设置为:判断信道质量超过预设测量门限值的邻小区的当前数量是否达到预设数量,并在当前数量达到预设数量的情况下,停止检测邻小区的信道质量。
一实施例提供了一种切换小区的装置,该装置可以设置在源无线网元中,切换小区的装置结构示意如图4所示,切换小区的装置包括:命令接收模块20和切换模块21。
命令接收模块20设置为接收用户设备发送的切换命令,其中,切换命令中携带有目标切换小区对应的目标无线网元的信息。
切换模块21,与命令接收模块20耦合,设置为根据目标无线网元的信息执行切换过程,以完成用户设备的小区切换。
一实施例中,切换小区的装置在接收到用户设备发送的切换命令时,切换模块根据该切换命令中携带的目标切换小区对应的目标无线网元的信息来执行切换过程,在切换的过程中,切换模块可以包括多个单元来分别执行切换过程中的至少一个过程,切换模块21的结构如图5所示,切换模块21可以包括:检测单元210、第一切换单元211以及第二切换单元212。
检测单元210设置为检测与目标无线网元之间是否存在直连接口。
第一切换单元211,与检测单元210耦合,设置为在存在直连接口的情况下,向目标无线网元发送切换请求消息,其中,切换请求中携带有目标无线网元向核心网控制面实体发送路径转换请求时需要的承载上下文信息;在完成切换后,接收来自目标无线网元的切换响应消息。
第二切换单元212,与检测单元210耦合,设置为在不存在直连接口的情况 下,向核心网控制面实体发送切换请求消息,其中,切换请求中携带有承载上下文信息;在完成切换后,接收来自核心网控制面实体的切换响应消息。
一实施例提供一种UE自主切换的方法,即“UE决策”,是指UE根据服务小区(即用户终端所在的服务小区)和邻小区的信道质量测量结果,选择满足小区切换条件的新服务小区进行切换。
图6为一实施例中的UE自主切换的消息流程。UE自主切换的方法包括如下步骤602至步骤610。
步骤602中,源无线网络单元(即源无线网元)向UE发送测量配置信息,测量配置信息中包含测量物理量和测量门限值。
测量物理量可以是参考信号接收功率,或者导频强度。
测量门限值可以是绝对门限值,也可以是相对门限值。
一实施例中,UE测量的物理量和绝对门限值比较,当比较结果符合预设条件时,认为满足条件。一实施例中,UE测量的物理量和服务小区的物理量之间的差值和相对门限值比较,当比较结果符合预设条件时,认为满足条件。
测量配置信息中可以包含测量的范围,即测量哪些小区,例如,测量配置信息中可以包含邻接小区的列表信息。
一实施例中,测量配置消息中还可以包括一个小区个数,表示测量的物理层和测量门限值相比达到预设条件的小区个数的最大值。
步骤604中,UE测量邻区信号,进行切换判决。下面对UE自主切换判决的两种情况进行说明。
一实施例中,UE自主切换的判决流程包括:UE对周边可以检测到的发射节点进行测量;在这些符合条件的发射节点中选择信道质量最好的节点,作为切换的目标节点。
一实施例中,UE自主切换的判决流程包括:UE对周边可以检测到的发射节点进行测量;当测量的发射节点的质量和测量门限值相比达到预设条件的个数达到个数门限时,停止测量,在这些符合条件的发射节点中选择信道质量最好的节点,作为切换的目标节点。
步骤606中,UE向源无线网络单元发送切换命令,切换命令中包含目标无线网络单元(即目标无线网元)的信息。
步骤608中,源无线网络单元执行切换过程。
步骤610中,源无线网络单元向UE发送切换完成消息。
一实施例中,源无线网络单元基于是否和目标无线网络单元有直接接口,根据是否有直接接口,决策是直接将切换消息发送给目标无线网络单元还是发送给核心网控制面实体。下面结合附图对上述流程进行说明。
一实施例中,源无线网络单元和目标无线网络单元有直接接口,决策直接将切换消息发送给目标无线网络单元,图7为本实施例中通过无线网络单元接口发送切换命令的流程,该流程包括以下步骤。
步骤702中,源无线网络单元向目标无线网络单元发送切换请求消息,消息中包含承载上下文信息。
步骤704中,目标无线网络单元向核心网控制面实体发送路径转换请求消息,消息中包含承载上下文信息。
步骤706中,核心网控制面实体修改和无线网络单元之间的承载,即将源无线网络单元修改为目标无线网络单元。
步骤708中,核心网控制面实体向目标无线网络单元发送路径转换响应消息。
步骤710中,目标无线网络单元向源无线网络单元发送切换响应消息,消息中包含分配的无线承载信息,同时保存承载上下文信息。
一实施例中,源无线网络单元和目标无线网络单元没有直接接口,决策采用将切换消息发送给核心网控制面实体。图8为一实施例中通过无线网络单元和核心网控制面实体接口发送切换命令的流程,该流程包括以下步骤。
步骤802中,源无线网络单元向核心网控制面实体发送切换请求消息,消息中包含承载上下文信息。
步骤804中,核心网控制面实体向目标无线网络单元发送切换请求消息,消息中包含承载上下文信息。
步骤806中,目标无线网络单元进行资源分配,向核心网控制面实体发送切换响应消息,响应消息中包含分配的无线承载信息。
步骤808中,核心网控制面实体修改和无线网络单元的承载。
步骤810中,核心网控制面实体向源无线网络单元发送切换响应消息,响应消息中包含目标无线网络单元分配的无线承载信息。
下面,分别按照单侧网元的执行过程进行说明。
上述UE自主切换的方法,应用于无线网络单元,该UE自主切换的方法包括:
源无线网络单元向UE发送测量配置信息,测量配置信息中包含测量质量物理量和测量门限值;
源无线网络单元接收UE发送的切换命令,切换命令中包含目标无线网络单元的信息;以及
源无线网络单元执行切换过程。
上述UE自主切换的方法,应用于用户设备,UE自主切换的方法包括:
UE接收源无线网络单元发送的测量配置信息,测量配置信息中包含测量质量物理量和测量门限值;
UE测量邻区信号,进行切换判决;以及
UE向源无线网络单元发送切换命令,切换命令中包含目标无线网络单元的信息。
上述UE自主切换的方法,减小了空口消息,简化了切换的流程,并且可以基于UE配置切换参数,符合通信中以UE为中心的发展趋势。
一实施例提供了一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令设置为执行上述任一实施例中的方法。
一实施例提供了一种UE的硬件结构示意图。参见图9,该UE包括:
至少一个第一处理器(processor)90,图9中以一个第一处理器90为例;第一存储器(memory)91;还可以包括第一通信接口(Communications Interface)92和第一总线93。其中,第一处理器90、第一存储器91以及第一通信接口92可以通过第一总线93完成相互间的通信。第一处理器90可以调用第一存储器91中的逻辑指令,以执行上述实施例中UE执行的方法。
此外,上述的第一存储器91中的逻辑指令可以通过软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。
第一存储器91作为一种计算机可读存储介质,可用于存储软件程序、计算机可执行程序,如上述实施例中UE执行的方法对应的程序指令或模块。第一处理器90通过运行存储在第一存储器91中的软件程序、指令或模块,从而执行功能应用以及数据处理,即实现上述实施例中UE执行的方法。
第一存储器91可包括存储程序区和存储数据区,其中,存储程序区可存储 操作系统、至少一个功能所需的应用程序;存储数据区可存储根据终端设备的使用所创建的数据等。此外,第一存储器91可以包括高速随机存取存储器,还可以包括非易失性存储器。
一实施例提供了一种源无线网元的硬件结构示意图。参见图10,该源无线网元包括:
至少一个第二处理器(processor)1000,图10中以一个第二处理器1000为例;第二存储器(memory)1001;还可以包括第二通信接口(Communications Interface)1002和第二总线1003。其中,第二处理器1000、第二存储器1001以及第二通信接口1002可以通过第二总线1003完成相互间的通信。第二处理器1000可以调用第二存储器1001中的逻辑指令,以执行上述实施例中源无线网元执行的方法。
此外,上述的第二存储器1001中的逻辑指令可以通过软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。
第二存储器1001作为一种计算机可读存储介质,可用于存储软件程序、计算机可执行程序,如上述实施例中源无线网元执行的方法对应的程序指令或模块。第二处理器1000通过运行存储在第二存储器1001中的软件程序、指令或模块,从而执行功能应用以及数据处理,即实现上述实施例中源无线网元执行的方法。
第二存储器1001可包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序;存储数据区可存储根据终端设备的使用所创建的数据等。此外,第二存储器1001可以包括高速随机存取存储器,还可以包括非易失性存储器。
以上技术方案可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括一个或多个指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行上述实施例所述方法的全部或部分步骤。而前述的存储介质可以是非暂态存储介质,包括:U盘、移动硬盘、只读存储器(Read-Only Memory,ROM)、随机存取存储器(RandomAccess Memory,RAM)、磁碟或者光盘等多种可以存储程序代码的介质,也可以是暂态存储介质。
工业实用性
切换小区的方法和装置,能够实现UE自主切换过程。

Claims (11)

  1. 一种切换小区的方法,包括:
    用户设备根据接收到的测量配置信息检测所述用户设备所在服务小区的信道质量和至少一个邻小区的信道质量;
    在检测到的所述至少一个邻小区中存在信道质量超过所述服务小区的信道质量的情况下,所述用户设备将所述至少一个邻小区中信道质量最优的邻小区确定为目标切换小区;以及
    所述用户设备向所述服务小区对应的源无线网元发送切换命令,以使所述源无线网元执行切换过程,其中,所述切换命令中携带有所述目标切换小区对应的目标无线网元的信息。
  2. 如权利要求1所述的方法,所述用户设备向所述服务小区对应的源无线网元发送切换命令之后,所述方法还包括:
    在所述源无线网元完成切换过程的情况下,所述用户设备接收所述源无线网元发送的切换完成消息。
  3. 如权利要求1或2所述的方法,其中,所述用户设备根据接收到的所述测量配置信息检测所述至少一个邻小区的信道质量,包括:
    所述用户设备判断信道质量超过预设测量门限值的邻小区的当前数量是否达到预设数量;以及
    在所述当前数量达到所述预设数量的情况下,所述用户设备停止检测邻小区的信道质量。
  4. 一种切换小区的方法,包括:
    源无线网元接收用户设备发送的切换命令,其中,所述切换命令中携带有目标切换小区对应的目标无线网元的信息;以及
    所述源无线网元根据所述目标无线网元的信息执行切换过程,以完成所述用户设备的小区切换。
  5. 如权利要求4所述的方法,其中,所述源无线网元根据所述目标无线网元的信息执行切换过程,包括:
    所述源无线网元检测与所述目标无线网元之间是否存在直连接口;
    在存在所述直连接口的情况下,所述源无线网元向所述目标无线网元发送切换请求消息,其中,所述切换请求中携带有所述目标无线网元向核心网控制面实体发送所述路径转换请求时需要的承载上下文信息;在完成切换后,所述源无线网元接收来自所述目标无线网元的切换响应消息;以及
    在不存在所述直连接口的情况下,所述源无线网元向所述核心网控制面实体发送切换请求消息,其中,所述切换请求中携带有所述承载上下文信息;在完成切换后,所述源无线网元接收来自所述核心网控制面实体的切换响应消息。
  6. 一种切换小区的装置,包括:
    检测模块,设置为根据接收到的测量配置信息检测所述用户设备所在服务小区的信道质量和至少一个邻小区的信道质量;
    确定模块,设置为在检测到的所述至少一个邻小区中存在信道质量超过所述服务小区的信道质量的情况下,将所述至少一个邻小区中信道质量最优的邻小区确定为目标切换小区;以及
    发送模块,设置为向所述服务小区对应的源无线网元发送切换命令,以使所述源无线网元执行切换过程,其中,所述切换命令中携带有所述目标切换小区对应的目标无线网元的信息。
  7. 如权利要求6所述的装置,还包括:
    消息接收模块,设置为在所述源无线网元完成切换过程的情况下,接收所述源无线网元发送的切换完成消息。
  8. 如权利要求6或7所述的装置,其中,
    所述检测模块设置为:判断信道质量超过预设测量门限值的邻小区的当前数量是否达到预设数量,并在所述当前数量达到所述预设数量的情况下,停止检测邻小区的信道质量。
  9. 一种切换小区的装置,包括:
    命令接收模块,设置为接收用户设备发送的切换命令,其中,所述切换命令中携带有目标切换小区对应的目标无线网元的信息;以及
    切换模块,设置为根据所述目标无线网元的信息执行切换过程,以完成所述用户设备的小区切换。
  10. 如权利要求9所述的装置,其中,所述切换模块包括:
    检测单元,设置为检测与所述目标无线网元之间是否存在直连接口;
    第一切换单元,设置为在存在所述直连接口的情况下,向所述目标无线网元发送切换请求消息,其中,所述切换请求中携带有所述目标无线网元向核心网控制面实体发送所述路径转换请求时需要的承载上下文信息;在完成切换后,接收来自所述目标无线网元的切换响应消息;以及
    第二切换单元,设置为在不存在所述直连接口的情况下,向所述核心网控制面实体发送切换请求消息,其中,所述切换请求中携带有所述承载上下文信息;在完成切换后,接收来自所述核心网控制面实体的切换响应消息。
  11. 一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令设置为执行权利要求1-5中任一项的方法。
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101355787A (zh) * 2007-07-24 2009-01-28 鼎桥通信技术有限公司 一种小区切换方法
US20140106752A1 (en) * 2012-10-16 2014-04-17 Marvell World Trade Ltd. Inter-rat reselection in mobile communication systems
CN104469873A (zh) * 2013-09-25 2015-03-25 中兴通讯股份有限公司 小区切换方法及装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011013967A2 (en) * 2009-07-27 2011-02-03 Lg Electronics Inc. Apparatus and method for determining mobility state in wireless communication system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101355787A (zh) * 2007-07-24 2009-01-28 鼎桥通信技术有限公司 一种小区切换方法
US20140106752A1 (en) * 2012-10-16 2014-04-17 Marvell World Trade Ltd. Inter-rat reselection in mobile communication systems
CN104469873A (zh) * 2013-09-25 2015-03-25 中兴通讯股份有限公司 小区切换方法及装置

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