CN101483892A - Switching command sending method and base station - Google Patents

Switching command sending method and base station Download PDF

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CN101483892A
CN101483892A CNA2008100023154A CN200810002315A CN101483892A CN 101483892 A CN101483892 A CN 101483892A CN A2008100023154 A CNA2008100023154 A CN A2008100023154A CN 200810002315 A CN200810002315 A CN 200810002315A CN 101483892 A CN101483892 A CN 101483892A
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base station
handover
information
target base
terminal
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谢眀江
徐小英
潘炜
马小飞
高闻
谢铂云
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Huawei Technologies Co Ltd
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Abstract

本发明公开了一种切换命令的发送方法,应用于长期演进系统中,该方法包括:源基站将第一切换信息发送给终端,所述第一切换信息为变化周期超过预设值的目标基站信息;当确认所述终端需要发起切换,所述源基站向所述目标基站发送切换命令;所述源基站接收所述目标基站返回的切换响应,并根据所述目标基站的切换响应,将第二切换信息发送给所述终端,所述第二切换信息为变化周期小于等于预设值的目标基站信息。本发明实施例还提供了一种基站。采用本发明实施例的技术方案,明确了第一切换信息和第二切换信息的内容,使得在LTE系统中,分两步发送切换信息的方法成为可操作的技术方案,完善了该方法,保证切换信息可以及时、可靠、完整地传递给终端。

Figure 200810002315

The invention discloses a method for sending a handover command, which is applied to a long-term evolution system. The method includes: a source base station sends first handover information to a terminal, and the first handover information is a target base station whose change cycle exceeds a preset value information; when it is confirmed that the terminal needs to initiate handover, the source base station sends a handover command to the target base station; the source base station receives the handover response returned by the target base station, and according to the handover response of the target base station, transfers the first Second handover information is sent to the terminal, the second handover information is target base station information whose change period is less than or equal to a preset value. The embodiment of the present invention also provides a base station. By adopting the technical solution of the embodiment of the present invention, the content of the first handover information and the second handover information is clarified, so that in the LTE system, the method of sending handover information in two steps becomes an operable technical solution, which improves the method and ensures Handover information can be delivered to the terminal in a timely, reliable and complete manner.

Figure 200810002315

Description

一种切换命令的发送方法及基站 A method for sending handover command and base station

技术领域 technical field

本发明涉及通信领域,特别涉及一种切换命令的发送方法及基站。The invention relates to the communication field, in particular to a method for sending a handover command and a base station.

背景技术 Background technique

随着通信技术的发展,对于网络质量的要求日益提高,其中的一个方面是实现终端(User Equipment,UE)在不同小区之间顺利的切换With the development of communication technology, the requirements for network quality are increasing day by day, one of which is to realize the smooth handover of terminals (User Equipment, UE) between different cells

在全球移动通信(Global System For Mobile Communication,GSM)等无线网络中,UE在不同小区之间的切换由无线网络控制器(Radio NetworkController,RNC)控制,在长期演进(Long Term Evolution,LTE)网络中没有RNC,切换控制由基站(Base Station,BS或者NodeB)完成。In wireless networks such as Global System For Mobile Communication (GSM), UE handover between different cells is controlled by Radio Network Controller (RNC). In Long Term Evolution (LTE) networks There is no RNC in the network, and the handover control is completed by the base station (Base Station, BS or NodeB).

源基站管理源小区,目标基站管理目标小区,UE目前处于源小区中,当源基站根据UE及源基站的测量报告,决定UE向目标小区切换时,会直接通过X2接口和目标基站进行信息交换,完成目标小区的资源准备;之后发切换命令通知UE往目标小区切换;在切换成功后,目标基站通知源基站释放源小区的无线资源。除此以外,源基站需要把尚未发送的数据传送给目标基站,并更新用户平面和控制平面的节点关系。The source base station manages the source cell, and the target base station manages the target cell. The UE is currently in the source cell. When the source base station decides to handover the UE to the target cell according to the measurement reports of the UE and the source base station, it will directly exchange information with the target base station through the X2 interface. , complete the resource preparation of the target cell; then send a handover command to notify the UE to switch to the target cell; after the handover is successful, the target base station notifies the source base station to release the radio resources of the source cell. In addition, the source base station needs to transmit the unsent data to the target base station, and update the node relationship between the user plane and the control plane.

从上述描述的切换流程看,为了保证切换的成功率,及时可靠地通知UE发起切换是一个非常重要的因素。LTE的提案中已经讨论了几种提高切换命令发送可靠性的方法,未达成一致的意见。德州仪器在3gpp 60次RAN2会议提的R2-075066中,提出分两步发送切换命令的方法,该提案的主要思想是在源基站做完切换决策后,在向目标基站发送切换请求的同时,向UE发送一部分源基站已有的一些切换信息,在收到目标基站的切换确认后,用低阶的调制编码方案向UE发送未完成的切换命令。但是该提案中没有具体指出每步发送的消息内容。From the handover process described above, in order to ensure the success rate of handover, it is a very important factor to promptly and reliably notify the UE to initiate the handover. Several methods for improving the reliability of handover command sending have been discussed in the LTE proposal, but no consensus has been reached. In the R2-075066 proposed by Texas Instruments at the 3gpp 60th RAN2 meeting, a method of sending handover commands in two steps is proposed. The main idea of this proposal is that after the source base station completes the handover decision, while sending the handover request to the target base station, Send some existing handover information of the source base station to the UE, and send the incomplete handover command to the UE with a low-order modulation and coding scheme after receiving the handover confirmation from the target base station. However, the proposal does not specify the content of the message sent at each step.

在传统3G切换过程中,源基站发送给UE的切换命令的整个消息全部来自目标基站返回的切换确认内容。目前LTE的基站在切换过程中也是基于这种假设,也就是说,源基站必须要先向目标基站发送切换命令,在目标基站返回的切换确认内容之后才能获得切换信息。上述分两步发送切换命令的方案没有提出第一步发送的切换信息的具体内容,也没有指出如何获得这些信息,因此按照目前LTE的基站获得切换信息的方式,上述技术方案不是一个可操作的技术方案。In the traditional 3G handover process, the entire message of the handover command sent by the source base station to the UE comes from the handover confirmation content returned by the target base station. The current LTE base station is also based on this assumption during the handover process, that is, the source base station must first send a handover command to the target base station, and the handover information can only be obtained after the handover confirmation returned by the target base station. The above scheme of sending the handover command in two steps does not propose the specific content of the handover information sent in the first step, nor does it point out how to obtain this information. Therefore, according to the current way for LTE base stations to obtain handover information, the above technical solution is not an operable one. Technical solutions.

发明内容 Contents of the invention

本发明实施例的目的在于提供切换命令的发送方法及基站,实现两步发送切换命令,保证切换命令及时、可靠以及完整地发送给终端。The purpose of the embodiments of the present invention is to provide a method for sending a handover command and a base station, realize two-step sending of the handover command, and ensure that the handover command is sent to the terminal in a timely, reliable and complete manner.

本发明实施例提供了一种切换命令的发送方法,应用于长期演进系统中,该方法包括:An embodiment of the present invention provides a method for sending a handover command, which is applied to a long-term evolution system, and the method includes:

源基站将第一切换信息发送给终端,所述第一切换信息为变化周期超过预设值的目标基站信息;The source base station sends first handover information to the terminal, where the first handover information is target base station information whose change period exceeds a preset value;

当确认所述终端需要发起切换,所述源基站向所述目标基站发送切换命令;When it is confirmed that the terminal needs to initiate a handover, the source base station sends a handover command to the target base station;

所述源基站接收所述目标基站返回的切换响应,并根据所述目标基站的切换响应,将第二切换信息发送给所述终端,所述第二切换信息为变化周期小于等于预设值的目标基站信息。The source base station receives the handover response returned by the target base station, and sends second handover information to the terminal according to the handover response of the target base station, where the second handover information is a change period less than or equal to a preset value Target base station information.

本发明实施例还提供了一种基站,设置于长期演进系统中,其特征在于,包括:An embodiment of the present invention also provides a base station, which is set in a long-term evolution system, and is characterized in that it includes:

存储单元,用于存储第一切换信息,所述第一切换信息为变化周期超过预设值的目标基站信息;a storage unit, configured to store first handover information, where the first handover information is target base station information whose change cycle exceeds a preset value;

切换命令单元,用于当获知所述终端需要发起切换,向所述目标基站发送切换命令;A handover command unit, configured to send a handover command to the target base station when it is known that the terminal needs to initiate a handover;

接收单元,用于当所述切换命令单元发送切换命令后,接收来自所述目标基站的切换响应;a receiving unit, configured to receive a handover response from the target base station after the handover command unit sends the handover command;

发送单元,用于将所述存储单元存储的第一切换信息发送给终端,以及根据所述接收单元接收的切换响应,将第二切换信息发送给所述终端,其中,所述第二切换信息为变化周期小于等于预设值的目标基站信息。a sending unit, configured to send the first switching information stored in the storage unit to the terminal, and send second switching information to the terminal according to the switching response received by the receiving unit, wherein the second switching information is target base station information whose change period is less than or equal to a preset value.

采用本发明实施例的技术方案,明确了第一切换信息和第二切换信息的内容,使得在LTE系统中,分两步发送切换信息的方法成为可操作的技术方案,完善了该方法,保证切换信息可以及时、可靠、完整地传递给终端。By adopting the technical solution of the embodiment of the present invention, the content of the first handover information and the second handover information is clarified, so that in the LTE system, the method of sending handover information in two steps becomes an operable technical solution, which improves the method and ensures Handover information can be delivered to the terminal in a timely, reliable and complete manner.

附图说明 Description of drawings

图1所示为本发明实施例一中切换命令发送的方法的流程示意图;FIG. 1 is a schematic flowchart of a method for sending a handover command in Embodiment 1 of the present invention;

图2所示为终端在HNodeB和宏小区间切换场景;Figure 2 shows the scene where the terminal switches between the HNodeB and the macro cell;

图3所示为终端在隧道两端的小区间切换场景;Figure 3 shows the scene where the terminal is handed over between cells at both ends of the tunnel;

图4所示为本发明实施例二中基站的结构示意图。FIG. 4 is a schematic structural diagram of a base station in Embodiment 2 of the present invention.

具体实施方式 Detailed ways

下面对本发明进行详细说明。The present invention will be described in detail below.

首先将基站向终端发送的切换命令消息内容分为两大类,其中一类是变化频率较低的信息,比如上下行链路的配置信息、上下行链路带宽、随机接入参数(比如:随机序列格式、根序列索引、零相关区域长度、高速标识、随机接入发送功率设置、小区标识)等,这些信息在基站重配置前或基站重启动前不会改变,即变化周期大于基站重配置或重启动的间隔;或者其他在基站重配置或重启动前可能会变化、但变化周期超过预设值(例如一分钟)的信息,这些变化频率较低的信息在下文中称为第一切换信息。另一类是变化频率相对高的信息,比如小区无线网络临时标识(C-RNTI Cell Radio Network TemporaryIdentifier,C-RNTI)、随机接入的时频资源配置、随机接入专用序列等变化较快的信息,即变化周期小于等于预设值(例如一分钟)的信息,这些变化频率较高的信息在下文中称为第二切换信息。变化周期的预设值根据小区的平均用户数量的不同可以设置为几十秒到几个小时不等。用户数量多则预设值低(即周期短),数量少则预设值高。First, the content of the handover command message sent by the base station to the terminal is divided into two categories, one of which is information with a lower frequency of change, such as uplink and downlink configuration information, uplink and downlink bandwidth, and random access parameters (such as: Random sequence format, root sequence index, zero correlation region length, high-speed identification, random access transmission power setting, cell identification), etc., these information will not change before the base station is reconfigured or before the base station is restarted, that is, the change period is longer than that of the base station reconfiguration The configuration or restart interval; or other information that may change before the base station is reconfigured or restarted, but the change period exceeds a preset value (for example, one minute). These information with a lower frequency of change are hereinafter referred to as the first handover information. The other type is information with a relatively high frequency of change, such as C-RNTI Cell Radio Network Temporary Identifier (C-RNTI), time-frequency resource configuration for random access, and dedicated sequences for random access, etc. The information, that is, the information whose changing period is less than or equal to a preset value (for example, one minute), and the information whose changing frequency is relatively high is hereinafter referred to as the second switching information. The preset value of the change cycle can be set from tens of seconds to several hours according to the average number of users in the cell. If the number of users is large, the preset value is low (that is, the period is short), and if the number of users is small, the preset value is high.

在目标基站向源基站发送切换确认时,可分别把这两类信息分别包含在两个容器中,包含第一切换信息的容器带有版本信息,或者还可以包含该版本信息地有效时限。When the target base station sends the handover confirmation to the source base station, the two types of information can be contained in two containers respectively, and the container containing the first handover information contains version information, or can also contain the valid time limit of the version information.

对于第一切换信息源基站可通过以下两种方法获得:The source base station of the first handover information can be obtained through the following two methods:

1)在首次或者上次源基站和目标基站的切换服务过程中,源基站收到目标基站的切换确认消息时,如果切换确认消息中存在包含第一切换信息的容器,则将第一切换信息保存到本地。1) During the first or last handover service process between the source base station and the target base station, when the source base station receives the handover confirmation message from the target base station, if there is a container containing the first handover information in the handover confirmation message, then the first handover information Save it locally.

2)在目标基站发生重配置或者重启动后,目标基站判断第一切换信息是否更新,如果第一切换信息已更新,则目标基站主动发送更新后的第一切换信息及新版本信息到相邻基站(包括源基站),源基站收到后用新版本信息更新本地保存的目标基站的旧版本信息,并用更新的第一切换信息替换本地保存的目标基站的原第一切换信息。2) After the target base station is reconfigured or restarted, the target base station judges whether the first handover information has been updated, and if the first handover information has been updated, the target base station actively sends the updated first handover information and new version information to neighboring The base station (including the source base station), after the source base station receives the new version information, updates the locally stored old version information of the target base station, and replaces the locally stored original first handover information of the target base station with the updated first handover information.

图1所示为本发明实施例一中切换命令发送的方法的流程示意图。FIG. 1 is a schematic flowchart of a method for sending a handover command in Embodiment 1 of the present invention.

本技术方案的具体过程如下:The concrete process of this technical scheme is as follows:

步骤1a,源基站根据测量报告做出切换决策,确认终端需要发起切换,源基站查看是否存有终端要切换的目标基站的第一切换信息。如果该源基站存有该第一切换信息,那么源基站在向目标基站发送切换请求的同时,向终端发送源基站保存的上述第一切换信息。Step 1a, the source base station makes a handover decision according to the measurement report, confirms that the terminal needs to initiate a handover, and the source base station checks whether there is first handover information of the target base station to which the terminal wants to handover. If the source base station stores the first handover information, the source base station sends the first handover information stored by the source base station to the terminal while sending a handover request to the target base station.

步骤1b,在源基站向目标基站发送切换请求时,切换请求中包含源基站保存的目标基站第一切换信息的版本号,目标基站收到该切换请求后检查该第一切换信息是否已经无效。Step 1b, when the source base station sends a handover request to the target base station, the handover request includes the version number of the first handover information of the target base station saved by the source base station, and the target base station checks whether the first handover information is invalid after receiving the handover request.

步骤2,如果第一切换信息内容有更新,那么目标基站在向源基站发送切换确认时,将包含携带新的第一切换信息的容器。否则,切换确认消息只需包含第二切换信息。Step 2, if the content of the first handover information is updated, the target base station will include a container carrying the new first handover information when sending the handover confirmation to the source base station. Otherwise, the handover confirmation message only needs to include the second handover information.

步骤3,源基站收到新的第一切换信息进行保存。如果源基站收到了新的第一切换信息,那么它将重新发送新的第一切换信息和第二切换信息到终端。Step 3, the source base station receives new first handover information and saves it. If the source base station receives new first handover information, it will resend new first handover information and second handover information to the terminal.

其中,步骤1a和步骤1b可以并行发送。步骤1a可采用高层确认机制,达到更高的可靠性。步骤3可采用低阶调制和混合自动重发请求(HybridAutomatic Repeat Request,HARQ)方案来保证可靠性。Wherein, step 1a and step 1b can be sent in parallel. Step 1a can adopt a high-level confirmation mechanism to achieve higher reliability. In step 3, low-order modulation and a hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) scheme may be used to ensure reliability.

在用户平面上,为了避免切换中的数据丢失,在信令上的切换流程完成之后,目标基站将通知移动管理实体/用户面实体(Mobility Management Entity,MME/User Plane Entity,UPE)将网关到基站的用户面路径从源基站转移到目标基站。同时源基站陆续把自己在切换期间收到的给用户的数据包通过X2接口的用户面隧道,转发给目标基站。On the user plane, in order to avoid data loss during handover, after the handover process on the signaling is completed, the target base station will notify the mobility management entity/user plane entity (Mobility Management Entity, MME/User Plane Entity, UPE) to send the gateway to The user plane path of the base station is transferred from the source base station to the target base station. At the same time, the source base station successively forwards the data packets for the user received by itself during the handover period to the target base station through the user plane tunnel of the X2 interface.

另外,步骤1a还可以提前到切换决策以前执行。在一些已经明确知道切换目标基站的特殊场景下时具有一定意义。比如下面的家用基站(HomeNodeB,HNodeB)场景:网络已经知道出了HNodeB移动终端一定会去某个宏小区。具体提前到什么时候,可以在基站侧为此设定另外一个门限(可以通过UE的测量报告内容来触发、也可以通过基站侧对自身的测量)。即在没有达到切换标准前,可能已经达到了触发早发切换信息消息的门限。这对提高切换命令下发的可靠性也会有帮助。In addition, step 1a can also be executed in advance before the handover decision. It has certain significance in some special scenarios where the handover target base station is clearly known. For example, in the following home base station (HomeNodeB, HNodeB) scenario: the network already knows that the mobile terminal will definitely go to a certain macro cell after leaving the HNodeB. When to advance specifically, another threshold can be set on the base station side (it can be triggered by the content of the UE's measurement report, or it can be measured by the base station itself). That is, before the handover standard is not reached, the threshold for triggering the early sending of the handover information message may have been reached. This will also help to improve the reliability of handover command delivery.

HNodeB应用场景举例:Examples of HNodeB application scenarios:

场景一,图2所示为终端在HNodeB和宏小区间切换场景。Scenario 1, Figure 2 shows a scenario where a terminal switches between the HNodeB and the macro cell.

该场景中,源基站是HNodeB,目标基站是覆盖宏小区的基站,因为与HNodeB相邻的宏小区较少,所以终端在HNodeB的所属小区和宏小区基本固定。在日常交互或者上次交互切换交互中,这两个基站可以保存对方的提前发送的第一切换信息。当HNodeB决定切换终端到目标基站时,它向终端提前发送第一切换信息,终端可以做一些切换准备工作,当终端收到第二切换信息时,终端开始执行切换到目标基站。In this scenario, the source base station is the HNodeB, and the target base station is the base station covering the macro cell. Since there are few macro cells adjacent to the HNodeB, the terminal is basically fixed in the cell to which the HNodeB belongs and the macro cell. During the daily interaction or the last handover interaction, the two base stations may store the first handover information sent in advance by the other side. When HNodeB decides to switch the terminal to the target base station, it sends the first handover information to the terminal in advance, and the terminal can do some handover preparations. When the terminal receives the second handover information, the terminal starts to perform handover to the target base station.

场景二,图3所示为终端在隧道两端的小区间切换场景。Scenario 2, Figure 3 shows a scenario where a terminal is handed over between cells at both ends of the tunnel.

在该场景中,源基站和目标基站分别是覆盖隧道两端的小区的基站,在隧道两端的小区固定,所以两个基站都可以保存有对方的提前发送的第一切换信息。当终端在隧道两端发生切换时,一旦决定切换,源基站可提前向终端发送目标基站的第一切换信息。在发送切换请求到目标基站时,该切换请求包含第一切换信息的版本信息。当源基站收到目标基站的切换确认,检测是否有新版本的第一切换信息,有新版信息则更新到本地,同时下发收到的切换响应消息到终端。In this scenario, the source base station and the target base station are respectively base stations covering the cells at both ends of the tunnel, and the cells at both ends of the tunnel are fixed, so both base stations can store the first handover information sent in advance by the other side. When the terminal is handed over at both ends of the tunnel, once the handover is decided, the source base station may send the first handover information of the target base station to the terminal in advance. When sending the handover request to the target base station, the handover request includes version information of the first handover information. When the source base station receives the handover confirmation from the target base station, it detects whether there is a new version of the first handover information, if there is a new version of the information, it is updated locally, and at the same time, it sends the received handover response message to the terminal.

场景三,宏小区间切换。除了上述两个场景外,终端在宏小区发生的切换小区可能相对不固定。源基站可根据目标基站的提前发送第一切换信息的时效性来设置是否提前发送这类信息。如果目标基站发送的切换确认消息没有提供这类信息,那么源基站组合本地保存的切换信息和收到目标基站的切换信息确认消息的内容,发送给终端,并重新设置本地保存的切换信息的有效时限。Scenario 3: Handover between macro cells. In addition to the above two scenarios, the handover of the terminal in the macro cell may be relatively unfixed. The source base station may set whether to send such information in advance according to the timeliness of the target base station in sending the first handover information in advance. If the handover confirmation message sent by the target base station does not provide such information, then the source base station combines the locally stored handover information with the content of the received handover information confirmation message from the target base station, sends it to the terminal, and resets the valid value of the locally stored handover information. time limit.

以上技术方案中,通过划分切换信息的内容,把一些相邻小区所属基站用于通知终端切换的、变化频率较低的内容,即第一切换信息保存在源基站,一旦源基站做出切换决策,发现目标基站的第一切换信息在源基站有保存,那么可提前发送这部分切换信息给终端,便于终端提前做切换预备工作。同时,一方面,将部分切换信息提前发送,可以为第二切换信息赢得更多发送时间;另一方面,减少了第二切换信息的内容,从而增加第二切换信息的调制编码方案(Modulation and Coding Scheme,MCS);再一方面,可以采用高层的确认机制来保证第一切换信息的可靠性,这样既保证了信令发送的可靠性,又不带来延时,开销相对其他提高可靠性的方案(比如用低阶MCS发送不被拆分的切换信令或者多个HARQ进程同时发送不被拆分的切换信令)也较小。另外,在第二切换信息发送失败的情况下,终端可根据收到的第一切换信息分析要切换的目标小区,避免终端选择一个没有经过切换准备的小区,导致切换失败。In the above technical solution, by dividing the content of the handover information, the base stations belonging to some adjacent cells are used to notify the terminal of the handover content with a low frequency of change, that is, the first handover information is stored in the source base station. Once the source base station makes a handover decision , it is found that the first handover information of the target base station is stored in the source base station, then this part of handover information can be sent to the terminal in advance, so that the terminal can prepare handover in advance. At the same time, on the one hand, sending part of the handover information in advance can win more sending time for the second handover information; on the other hand, the content of the second handover information is reduced, thereby increasing the modulation and coding scheme (Modulation and Coding Scheme, MCS); On the other hand, the high-level confirmation mechanism can be used to ensure the reliability of the first switching information, which not only ensures the reliability of signaling transmission, but also does not bring delay, and the overhead is relatively higher than other reliability. The solution (for example, using a low-order MCS to send handover signaling that is not split or multiple HARQ processes to send handover signaling that is not split) is also relatively small. In addition, in the case of failure to send the second handover information, the terminal can analyze the target cell to be handed over according to the received first handover information, so as to prevent the terminal from selecting a cell that has not been prepared for handover, resulting in handover failure.

图4所示为本发明实施例二中基站的结构示意图。FIG. 4 is a schematic structural diagram of a base station in Embodiment 2 of the present invention.

一种基站,设置于长期演进系统中,用于发送切换命令,包括:A base station, set in a long-term evolution system, for sending handover commands, including:

存储单元401,用于存储第一切换信息,该第一切换信息为变化周期超过预设值的目标基站信息;The storage unit 401 is configured to store first handover information, where the first handover information is target base station information whose change cycle exceeds a preset value;

切换命令单元402,用于当根据测量报告确认终端需要发起切换,向目标基站发送切换命令;A handover command unit 402, configured to send a handover command to the target base station when it is confirmed according to the measurement report that the terminal needs to initiate a handover;

接收单元403,用于当所述切换命令单元发送切换命令后,接收来自目标基站的切换响应;The receiving unit 403 is configured to receive a handover response from the target base station after the handover command unit sends the handover command;

发送单元404,用于将上述存储单元存储的第一切换信息发送给终端,以及根据所述接收单元接收的切换响应,将第二切换信息发送给终端,其中,上述第二切换信息为变化周期小于等于预设值的目标基站信息。The sending unit 404 is configured to send the first switching information stored in the storage unit to the terminal, and send the second switching information to the terminal according to the switching response received by the receiving unit, wherein the second switching information is a change period Target base station information less than or equal to a preset value.

进一步的,上述接收单元,还用于当目标基站的第一切换信息发生更改,收到来自所述目标基站的更新后的第一切换信息;Further, the above receiving unit is also configured to receive updated first handover information from the target base station when the first handover information of the target base station is changed;

上述存储单元,还用于根据所述接收单元接收的更新后的第一切换信息,更新存储的第一切换信息。The storage unit is further configured to update the stored first switching information according to the updated first switching information received by the receiving unit.

进一步的,上述发送单元还包括:Further, the above sending unit also includes:

判断子单元,用于判断是否到达预定的触发门限;A judging subunit, configured to judge whether a predetermined trigger threshold is reached;

发送子单元,用于当所述判断子单元判断到达预定的触发门限,将第一切换信息发送给终端。The sending subunit is configured to send the first switching information to the terminal when the judging subunit judges that a predetermined trigger threshold is reached.

通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到本发明可借助软件加必需的硬件平台的方式来实现,当然也可以全部通过硬件来实施,但很多情况下前者是更佳的实施方式。基于这样的理解,本发明的技术方案对背景技术做出贡献的全部或者部分可以以软件产品的形式体现出来,该计算机软件产品可以存储在存储介质中,如ROM/RAM、磁碟、光盘等,包括若干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)执行本发明各个实施例或者实施例的某些部分所述的方法。Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be realized by means of software plus a necessary hardware platform, and of course all can be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, all or part of the contribution made by the technical solution of the present invention to the background technology can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM, magnetic disks, optical disks, etc. , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute the methods described in various embodiments or some parts of the embodiments of the present invention.

以上所述仅是本发明的具体实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以作出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。The above are only specific implementations of the present invention. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principles of the present invention. These improvements and modifications should also be made. It is regarded as the protection scope of the present invention.

Claims (22)

1、一种切换命令的发送方法,应用于长期演进系统中,其特征在于,该方法包括:1. A method for sending a handover command, applied in a long-term evolution system, characterized in that the method comprises: 源基站将第一切换信息发送给终端,所述第一切换信息为变化周期超过预设值的目标基站信息;The source base station sends first handover information to the terminal, where the first handover information is target base station information whose change period exceeds a preset value; 当确认所述终端需要发起切换,所述源基站向所述目标基站发送切换命令;When it is confirmed that the terminal needs to initiate a handover, the source base station sends a handover command to the target base station; 所述源基站接收所述目标基站返回的切换响应,并根据所述目标基站的切换响应,将第二切换信息发送给所述终端,所述第二切换信息为变化周期小于等于预设值的目标基站信息。The source base station receives the handover response returned by the target base station, and sends second handover information to the terminal according to the handover response of the target base station, where the second handover information is a change period less than or equal to a preset value Target base station information. 2、根据权利要求1所述的方法,其特征在于,所述变化周期超过预设值的目标基站信息包括:在源基站重配置或重启动之前不改变的目标基站信息。2. The method according to claim 1, wherein the target base station information whose change period exceeds a preset value includes: target base station information that does not change until the source base station is reconfigured or restarted. 3、根据权利要求1所述的方法,其特征在于,所述变化周期超过预设值的目标基站信息包括:在源基站重配置或重启动之前,变化周期大于预设值的目标基站信息。3. The method according to claim 1, wherein the target base station information whose change period exceeds a preset value includes: before the source base station is reconfigured or restarted, the target base station information whose change period is greater than a preset value. 4、根据权利要求3所述的方法,其特征在于,该方法还包括:4. The method according to claim 3, further comprising: 根据所述目标基站所覆盖的小区的平均用户数量设定所述变化周期的预设值。The preset value of the change period is set according to the average number of users in the cell covered by the target base station. 5、根据权利要求4所述的方法,其特征在于,所述根据所述目标基站所覆盖的小区的平均用户数量设定所述变化周期的预设值包括:5. The method according to claim 4, wherein the setting the preset value of the change period according to the average number of users of the cell covered by the target base station comprises: 随着所述目标基站所覆盖的小区的平均用户数量的增多,所述变化周期的预设值减小。As the average number of users in the cell covered by the target base station increases, the preset value of the change period decreases. 6、根据权利要求1所述的方法,其特征在于,所述第一切换信息包括:上下行链路的配置信息、上下行链路带宽和随机接入参数。6. The method according to claim 1, wherein the first handover information includes: uplink and downlink configuration information, uplink and downlink bandwidth, and random access parameters. 7、根据权利要求6所述的方法,其特征在于,所述随机接入参数包括:随机序列格式、根序列索引、零相关区域长度、高速标识、随机接入发送功率设置和小区标识。7. The method according to claim 6, wherein the random access parameters include: random sequence format, root sequence index, zero correlation region length, high-speed identification, random access transmission power setting and cell identification. 8、根据权利要求1所述的方法,其特征在于,所述第二切换信息包括:所述目标基站分配的小区无线网络临时标识C-RNTI。8. The method according to claim 1, wherein the second handover information includes: a cell radio network temporary identifier (C-RNTI) assigned by the target base station. 9、根据权利要求8所述的方法,其特征在于,所述第二切换信息还包括:随机接入专用序列、所述随机接入专用序列的有效终止时间和更新的第一切换信息。9. The method according to claim 8, wherein the second handover information further includes: a random access dedicated sequence, an effective termination time of the random access dedicated sequence, and updated first handover information. 10、根据权利要求1所述的方法,其特征在于,所述源基站将第一切换信息发送给终端之前还包括:10. The method according to claim 1, characterized in that before the source base station sends the first handover information to the terminal, it further comprises: 在首次或上次与所述目标基站的切换服务过程中,所述源基站收到所述目标基站的切换确认消息,如果所述切换确认消息中包含所述第一切换信息,则所述源基站存储所述第一切换信息。During the first or last handover service process with the target base station, the source base station receives a handover confirmation message from the target base station, and if the handover confirmation message contains the first handover information, the source base station The base station stores the first switching information. 11、根据权利要求1所述的方法,其特征在于,所述将第一切换信息发送给终端之前还包括:11. The method according to claim 1, characterized in that before sending the first switching information to the terminal, it further comprises: 当所述目标基站的第一切换信息发生更改,所述源基站收到来自所述目标基站的更新后的第一切换信息,并更新本地保存的第一切换信息。When the first handover information of the target base station is changed, the source base station receives updated first handover information from the target base station, and updates locally stored first handover information. 12、根据权利要求1所述的方法,其特征在于,所述源基站向所述目标基站发送切换命令之后,该方法还包括:12. The method according to claim 1, characterized in that after the source base station sends a handover command to the target base station, the method further comprises: 当所述目标基站的第一切换信息发生更改,所述切换响应中携带所述目标基站更新后的第一切换信息,所述源基站根据所述切换响应更新本地保存的第一切换信息。When the first handover information of the target base station is changed, the handover response carries the updated first handover information of the target base station, and the source base station updates locally stored first handover information according to the handover response. 13、根据权利要求12所述的方法,其特征在于,所述切换响应中包含两个容器,第一容器携带更新后的第一切换信息,第二容器携带所述第二切换信息,所述第一容器还携带更新后的第一切换信息的版本信息。13. The method according to claim 12, wherein the switching response includes two containers, the first container carries the updated first switching information, the second container carries the second switching information, and the The first container also carries updated version information of the first switching information. 14、根据权利要求13所述的方法,其特征在于,所述第一容器还携带所述更新后的第一切换信息的版本信息的有效时限。14. The method according to claim 13, wherein the first container also carries the valid time limit of the version information of the updated first switching information. 15、根据权利要求11或12所述的方法,其特征在于,所述更新本地保存的第一切换信息包括:15. The method according to claim 11 or 12, wherein the updating the locally saved first switching information comprises: 将来自所述目标基站的更新后的第一切换信息中的新版本信息替换本地保存的第一切换信息中的旧版本信息,并将更新后的第一切换信息替换本地保存的第一切换信息。replacing the old version information in the locally stored first handover information with the new version information in the updated first handover information from the target base station, and replacing the locally stored first handover information with the updated first handover information . 16、根据权利要求1所述的方法,其特征在于,所述源基站将第一切换信息发送给终端之前还包括:16. The method according to claim 1, wherein before the source base station sends the first handover information to the terminal, it further comprises: 在首次或上次与所述目标基站的切换服务过程中,所述源基站收到所述目标基站的切换确认消息时,当所述切换确认消息中包含发送第一切换信息的预定的触发门限时,存储所述发送第一切换消息的预定的触发门限。During the first or last handover service process with the target base station, when the source base station receives a handover confirmation message from the target base station, when the handover confirmation message includes a predetermined trigger gate for sending the first handover information time limit, storing the predetermined trigger threshold for sending the first handover message. 17、根据权利要求16所述的方法,其特征在于,所述将第一切换信息发送给终端包括:17. The method according to claim 16, wherein the sending the first switching information to the terminal comprises: 当到达所述发送第一切换信息的预定的触发门限时,将第一切换信息发送给终端。When the predetermined trigger threshold for sending the first switching information is reached, the first switching information is sent to the terminal. 18、根据权利要求17所述的方法,其特征在于,所述到达发送第一切换信息的预定的触发门限在确认所述终端需要发起切换之前。18. The method according to claim 17, wherein the arrival of the predetermined trigger threshold for sending the first handover information is before it is confirmed that the terminal needs to initiate handover. 19、根据权利要求17所述的方法,其特征在于,在确认所述终端需要发起切换的同时,到达所述发送第一切换信息的预定的触发门限。19. The method according to claim 17, characterized in that when it is confirmed that the terminal needs to initiate handover, the predetermined trigger threshold for sending the first handover information is reached. 20、一种基站,设置于长期演进系统中,其特征在于,包括:20. A base station, set in a long term evolution system, characterized in that it comprises: 存储单元,用于存储第一切换信息,所述第一切换信息为变化周期超过预设值的目标基站信息;a storage unit, configured to store first handover information, where the first handover information is target base station information whose change cycle exceeds a preset value; 切换命令单元,用于当获知所述终端需要发起切换,向所述目标基站发送切换命令;A handover command unit, configured to send a handover command to the target base station when it is known that the terminal needs to initiate a handover; 接收单元,用于当所述切换命令单元发送切换命令后,接收来自所述目标基站的切换响应;a receiving unit, configured to receive a handover response from the target base station after the handover command unit sends the handover command; 发送单元,用于将所述存储单元存储的第一切换信息发送给终端,以及根据所述接收单元接收的切换响应,将第二切换信息发送给所述终端,其中,所述第二切换信息为变化周期小于等于预设值的目标基站信息。a sending unit, configured to send the first switching information stored in the storage unit to the terminal, and send second switching information to the terminal according to the switching response received by the receiving unit, wherein the second switching information is target base station information whose change period is less than or equal to a preset value. 21、根据权利要求20所述的基站,其特征在于,21. The base station according to claim 20, characterized in that, 所述接收单元,还用于当所述目标基站的第一切换信息发生更改,收到来自所述目标基站的更新后的第一切换信息;The receiving unit is further configured to receive updated first handover information from the target base station when the first handover information of the target base station is changed; 所述存储单元,还用于根据所述接收单元接收的更新后的第一切换信息,更新存储的第一切换信息。The storage unit is further configured to update the stored first switching information according to the updated first switching information received by the receiving unit. 22、根据权利要求20所述的基站,其特征在于,所述发送单元包括:22. The base station according to claim 20, wherein the sending unit comprises: 判断子单元,用于判断是否到达发送第一切换消息的预定的触发门限;A judging subunit, configured to judge whether a predetermined trigger threshold for sending the first handover message is reached; 发送子单元,用于当所述判断子单元判断到达发送第一切换消息的预定的触发门限,将第一切换信息发送给终端。The sending subunit is configured to send the first handover information to the terminal when the judging subunit judges that a predetermined trigger threshold for sending the first handover message has been reached.
CNA2008100023154A 2008-01-08 2008-01-08 Switching command sending method and base station Pending CN101483892A (en)

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CN102239720A (en) * 2009-08-14 2011-11-09 华为技术有限公司 Control method for data processing, service node and terminal equipment
CN102281601A (en) * 2010-06-09 2011-12-14 华为技术有限公司 Method, equipment and system for carrying out handover processing between cells
CN102960023A (en) * 2010-06-25 2013-03-06 株式会社Ntt都科摩 Base station and method
CN103096255A (en) * 2013-01-11 2013-05-08 大唐移动通信设备有限公司 Broadcast news sending method and base station
WO2013086677A1 (en) * 2011-12-12 2013-06-20 华为技术有限公司 Communication method, base station and user equipment
WO2014190474A1 (en) * 2013-05-27 2014-12-04 华为技术有限公司 Mobility management method, device and system
CN104509161A (en) * 2012-08-07 2015-04-08 华为技术有限公司 Handover processing method and eNB
CN110637285A (en) * 2017-04-11 2019-12-31 高通股份有限公司 Advanced pass-through mechanism for low power sequencers
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CN102239720A (en) * 2009-08-14 2011-11-09 华为技术有限公司 Control method for data processing, service node and terminal equipment
CN102281601A (en) * 2010-06-09 2011-12-14 华为技术有限公司 Method, equipment and system for carrying out handover processing between cells
CN102281601B (en) * 2010-06-09 2014-12-31 华为技术有限公司 Method, equipment and system for carrying out handover processing between cells
CN102960023B (en) * 2010-06-25 2015-07-01 株式会社Ntt都科摩 Base station and method
CN102960023A (en) * 2010-06-25 2013-03-06 株式会社Ntt都科摩 Base station and method
WO2013086677A1 (en) * 2011-12-12 2013-06-20 华为技术有限公司 Communication method, base station and user equipment
CN103493539A (en) * 2011-12-12 2014-01-01 华为技术有限公司 Communication method, base station and user equipment
CN103493539B (en) * 2011-12-12 2017-10-24 华为技术有限公司 Communication means, base station and user equipment
US10015702B2 (en) 2012-08-07 2018-07-03 Huawei Technologies Co., Ltd. Handover processing method and base station
CN104509161A (en) * 2012-08-07 2015-04-08 华为技术有限公司 Handover processing method and eNB
US10736001B2 (en) 2012-08-07 2020-08-04 Huawei Technologies Co., Ltd. Handover processing method and base station
US10334486B2 (en) 2012-08-07 2019-06-25 Huawei Technologies Co., Ltd. Handover processing method and base station
CN104509161B (en) * 2012-08-07 2018-11-16 华为技术有限公司 Switching handling method and base station
CN103096255A (en) * 2013-01-11 2013-05-08 大唐移动通信设备有限公司 Broadcast news sending method and base station
CN103096255B (en) * 2013-01-11 2016-05-11 大唐移动通信设备有限公司 A kind of broadcast message sending method and a kind of base station
CN104854908B (en) * 2013-05-27 2018-05-29 华为技术有限公司 Motion management method, equipment and system
WO2014190474A1 (en) * 2013-05-27 2014-12-04 华为技术有限公司 Mobility management method, device and system
EP2991401A4 (en) * 2013-05-27 2016-04-20 Huawei Tech Co Ltd Mobility management method, device and system
CN104854908A (en) * 2013-05-27 2015-08-19 华为技术有限公司 Mobility management method, device and system
CN110637285A (en) * 2017-04-11 2019-12-31 高通股份有限公司 Advanced pass-through mechanism for low power sequencers
CN110913498A (en) * 2018-09-18 2020-03-24 维沃移动通信有限公司 A random access method and terminal
CN110913498B (en) * 2018-09-18 2021-07-06 维沃移动通信有限公司 A random access method and terminal

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