CN101860931A - Cell switching method and system for multi-carrier aggregation system - Google Patents

Cell switching method and system for multi-carrier aggregation system Download PDF

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CN101860931A
CN101860931A CN 200910161861 CN200910161861A CN101860931A CN 101860931 A CN101860931 A CN 101860931A CN 200910161861 CN200910161861 CN 200910161861 CN 200910161861 A CN200910161861 A CN 200910161861A CN 101860931 A CN101860931 A CN 101860931A
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ue
carrier
target
enb
cell
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CN101860931B (en )
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李国庆
梁靖
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大唐移动通信设备有限公司
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Abstract

The invention provides a cell switching method and a system for a multi-carrier aggregation system. When an evolved Node B (eNB) determines a target cell to admit one of a plurality of working frequency points of user equipment, a switching command containing frequency point information admitted by the target cell is transmitted to the UE through a source eNB and carrier resources satisfying the required quality of service (QoS) of the UE are reserved for the UE; and after the UE accesses to the target cell according to the frequency point information in the switching command by using the frequency point admitted by the target cell, a target eNB schedules the data transmission of the UE on the carrier resources reserved for the UE. Thereby, the switching of the UE from a source cell to the target cell under the multi-carrier system is realized, and if the carrier resources which are reserved by the eNB for the UE and satisfy the required QoS are multi-carrier resources, the switching of the UE from multi-carrier to multi-carrier can be realized.

Description

一种多载波聚合系统的小区切换方法和系统 A multi-carrier aggregation system cell handover method and system for

技术领域[0001] 本发明涉及移动通信技术领域,特别涉及一种多载波聚合系统的小区切换方法和系统。 Technical Field The invention relates to cell mobile communication technology field, and particularly relates to a multi-carrier aggregation system [0001] The present method and system handover.

背景技术 Background technique

[0002] 当诸如用户终端(UE)当前所在小区信道环境发生恶化等情况发生时,源基站(eNB)会触发UE进行小区切换。 [0002] When a situation such as a user terminal (UE) is currently located cell channel environment deterioration occurs, the source base station (eNB) will trigger the UE to perform a cell handover.

[0003] 现有小区切换过程如图1所示,源eNB向目标eNB发送切换请求消息,该切换请求消息中包含源eNB选择的目标小区标识和UE的工作频点信息。 [0003] Existing cell handover procedure shown in Figure 1, the source eNB requests the target eNB sends a handover message to the handover request message includes a source eNB selects a target cell UE identification and working frequency information. 目标eNB在确定目标小区能够使用该UE的工作频点接纳UE的接入后,为UE预留相应的资源,该预留的资源为该UE 的工作频点所在的载波资源,并向源eNB回复允许切换的响应消息,其中包含为UE预留的载波信息。 The target eNB after determining the target cell can be used working frequency point of the UE receiving the access of the UE, corresponding resources reserved for the UE, the resources reserved for the UE operating carrier frequency resource is located, to the source eNB allowing response handover reply message, wherein the carrier information comprises UE is reserved. 源eNB将目标小区标识以及上述预留的载波信息携带在切换命令中发送给UE, UE接收到切换命令后,通过目标小区中预留的一个载波接入目标小区。 After the source eNB carrier and said identification information of the target cell to the UE carries reserved in the handover command, the UE receives the handover command in the target cell by a carrier access reservation target cell.

[0004] 随着多载波聚合(CA,Carrier Aggregation)技术的提出,可以将同一小区中的多个连续或不连续的载波,或者多个单载波小区的多个连续或不连续的载波,集中在一起同时为UE服务,以提供更高的峰值速率和系统吞吐量。 [0004] With the proposed multi-carrier aggregation (CA, Carrier Aggregation) technology, a plurality of the same cell may be continuous or discontinuous plurality of carriers, a plurality of single carrier cells or continuous or discontinuous carrier concentration together at the same time serving the UE, to provide a higher peak rate and system throughput. 由于在CA系统中,UE在源eNB进行CA传输,即同时在多个载波上工作,在进行小区切换后可能也需要在目标eNB进行CA传输, 也就是说,CA系统中的切换是多载波到多载波的切换。 Since the CA system, the UE for transmission in the source eNB CA, i.e., simultaneously on multiple carriers, CA may be required after the transmission of the target eNB cell handover, i.e., switching CA multicarrier system multi-carrier handover. 而现有技术中的切换方法则是单载波到单载波的切换,其并不能用于CA系统,且目前尚没有任何针对CA系统的小区切换的方法。 Switching method in the prior art is a single-carrier handover to a single carrier, which CA system can not be used, and currently there is no way for the CA system cell handover.

发明内容 SUMMARY

[0005] 有鉴于此,本发明提供了一种CA系统的小区切换方法和系统,适用于CA系统中可能发生的多载波到多载波的切换。 [0005] Accordingly, the present invention provides one kind of cell CA system switching method and system for switching a multi-carrier system to a multi-carrier CA may occur.

[0006] 一种多载波聚合系统的小区切换方法,该方法包括: [0006] A multi-carrier cell system switching method of polymerization, the method comprising:

[0007] A、目标eNB确定在目标小区接纳UE多个工作频点中的一个时,为UE预留满足该UE的业务QoS要求的载波资源,通过源eNB向UE发送包含目标小区接纳的频点信息的切换命令; When [0007] A, the target eNB UE determines to receive the plurality of working frequency point in the target cell, the carrier resources reserved for the UE satisfy the QoS service requirements of the UE, the target cell comprises transmitting the receiving frequency to the UE via the source eNB point handover command information;

[0008] B、所述UE根据切换命令中的频点信息,利用目标小区所接纳的频点接入目标小区; [0008] B, the UE according to the handover command frequency information, using the frequency of the receiving target cell accesses the target cell;

[0009] C、所述目标eNB在为所述UE预留的载波资源上调度所述UE的数据传输。 [0009] C, the target eNB scheduling data transmissions from the UE to the UE on resources reserved carriers.

[0010] 一种多载波聚合系统的小区切换系统,该系统包括:目标eNB、源eNB和UE ; [0010] A multi-carrier aggregation system cell switching system, the system comprising: a target eNB, the source eNB and the UE;

[0011] 所述目标eNB,用于确定在目标小区接纳所述UE多个工作频点中的一个时,所述UE预留满足该UE的业务QoS要求的载波资源,通过所述源eNB向所述UE发送包含目标小区所接纳的频点信息的切换命令;在所述UE接入目标小区后,在为所述UE预留的载波资源上调度所述UE的数据传输;[0012] 所述UE,用于根据接收到的切换命令中的频点信息,利用目标小区所接纳的频点接入目标小区。 When [0011] the target eNB, for determining the target cell receive a plurality of working frequency of the UE, the UE satisfies a carrier resource reservation service QoS requirement of the UE by the source eNB to the UE transmits a handover command in the target cell by receiving frequency information; after the UE accesses the target cell, the UE scheduling data transmission for the UE on the carrier resources reserved; [0012] the It said the UE, frequency handover command according to the information received by the receiving frequency of the target cell accesses the target cell.

[0013] 由以上技术方案可以看出,本发明所提供的方法和系统中,目标eNB在确定目标小区接纳UE多个工作频点中的一个时,为UE预留满足该UE的业务QoS要求的载波资源, 通过源eNB向UE发送包含目标小区所接纳的频点信息的切换命令;UE根据切换命令中的频点信息,利用目标小区所接纳的频点接入目标小区后,目标eNB在为UE预留的载波资源上调度UE的数据传输。 When [0013] As can be seen from the above technical solutions, the methods and systems provided herein, the target eNB UE receiving one of a plurality of working frequency points in the target cell is determined, reserved for the UE to meet QoS requirements of service of the UE carrier resources, transmits a handover command accepted by the target cell frequency information by the source eNB to the UE; UE according to the handover command frequency information, using the frequency point after receiving target cell accesses the target cell, the target eNB upper carrier reserved resource scheduling UE transmission of the UE data. 从而实现多载波系统下UE从源小区到目标小区的切换,如果目标eNB为UE预留的满足业务QoS要求的载波资源为多载波资源,则UE可以实现从多载波到多载波的切换。 Thereby realizing the multi-carrier system handover UE from the source cell to a target cell, the target eNB for the UE if the reserved carriers meet the business requirements of QoS resources for multi-carrier resources, the UE may implement the switching from the multi-carrier to multi-carrier.

附图说明 BRIEF DESCRIPTION

[0014] 图1为现有技术中单载波系统的小区切换示意图; [0014] FIG. 1 is a prior art single carrier system cell handover schematic;

[0015] 图2为本发明实施例提供的方法流程图; [0015] FIG 2 is a flowchart of a method embodiment of the present embodiment of the invention;

[0016] 图3为本发明实施例提供的系统结构图。 [0016] FIG 3 a system configuration diagram according to an embodiment of the present invention.

具体实施方式 detailed description

[0017] 为了使本发明的目的、技术方案和优点更加清楚,下面结合附图和具体实施例对本发明进行详细描述。 [0017] To make the objectives, technical solutions, and advantages of the invention more apparent, the accompanying drawings and specific embodiments of the present invention will be described in detail with.

[0018] 本发明提供的方法主要包括:目标eNB确定在目标小区接纳UE多个工作频点中的一个时,为UE预留满足该UE的业务服务质量(QoS)要求的载波资源,通过源eNB向UE发送包含目标小区所接纳的频点信息的切换命令;该UE根据切换命令中的频点信息,利用目标小区所接纳的频点接入目标小区;目标eNB在UE接入目标小区后,在为该UE预留的载波资源上调度该UE的数据传输。 [0018] The present invention provides a method mainly includes: determining the target eNB when UE receiving one of a plurality of working frequency points in the target cell, the carrier resources reserved for the UE satisfy the quality of service (QoS) requirements of the UE by the source eNB transmits a handover command in the target cell frequency information accepted by the UE; UE according to the handover command frequency information, using the frequency of the receiving target cell accesses the target cell; the target eNB after the UE accesses the target cell scheduling the UE on the carrier resources reserved for the UE data transmission.

[0019] 下面结合具体实施例对上述方法进行详细描述。 Specific embodiments of the methods described in detail in the above-described [0019] below in conjunction. 图2为本发明实施例提供的方法流程图,如图2所示,该方法可以包括以下步骤: 2 is a flowchart a method according to an embodiment of the present invention, shown in Figure 2, the method may comprise the steps of:

[0020] 步骤201 :源eNB向目标eNB发送切换请求消息,切换请求消息中包含目标小区标识和UE的一个满足切换条件的工作频点信息。 [0020] Step 201: The source eNB sends a handover request message to the target eNB, a handover condition is satisfied handover message comprises a target cell identifier and a UE requests working frequency information.

[0021] 源eNB会根据UE上报的测量消息判断是否满足切换条件,例如,可以判断目标小区的信号质量与源小区的信号质量之间的差值是否大于预设的切换阈值,当满足切换条件时,源eNB会向满足切换条件的目标小区所属的目标eNB发送切换请求消息,该部分内容为现有技术。 [0021] The source eNB based on the measurement information reported by the UE determines whether the switching condition is satisfied, for example, it may determine whether the difference between the signal quality of the target cell and the source cell signal quality is greater than a predetermined threshold value for switching, when the switching condition is satisfied the target eNB sends a handover, the source eNB will belong to the target cell switching condition is satisfied the request message, which is part of the prior art.

[0022] 在本发明中,UE的工作频点中可能会存在一个或多个满足切换条件的工作频点, 源eNB向目标eNB发送的切换请求消息中会将UE的其中一个满足切换条件的工作频点信息发送给目标eNB。 [0022] In the present invention, the operating frequency of the UE or there may be a plurality of working frequency point satisfies a handover condition, in which the handover source eNB sends a request message to the target eNB to a UE will handover condition is satisfied working frequency point information to the target eNB.

[0023] 步骤202 :目标eNB根据接收到的切换请求消息,对切换请求消息中包含的频点信息进行接纳判决,即判断目标小区中切换请求消息包含的频点是否能够接纳UE的接入,如果是,继续执行步骤203,否则向源eNB发送判决失败的通知,转至步骤201,源eNB在切换请求消息中包含UE的其它工作频点中的一个工作频点的信息。 [0023] Step 202: The target eNB receives the handover request message, the receiving frequency decision on the handover request message contains information, i.e., determines whether the target cell in the handover request message including a frequency capable of receiving access of the UE, If yes, proceed to step 203, otherwise, sending a notification to the source eNB judgment failed, proceed to step 201, a source eNB contains information about the work of the other working frequency of the frequency of the UE in the handover request message.

[0024] 本步骤中涉及的接纳判决可以为:判断目标小区中该工作频点对应的载波负荷是否能够满足UE的接入要求,如果是,则能够接纳UE的接入,否则不能够接纳UE的接入。 [0024] receiving the decision in this step may be involved: determining whether the target cell in the working frequency corresponding to the point a load carrier to meet access requirement UE, if yes, the UE capable of receiving access, or not capable of receiving UE access. 也可以采用现有技术中的其它接纳判决方式。 Receiving the decision may also be employed other prior art embodiment.

[0025] 除了上述步骤201和步骤203中描述的方式之外,如果源eNB确定满足切换条件的目标小区为单载波小区,则可以向目标eNB发送包含目标小区标识的切换请求消息,该切换请求消息中不必包含UE的一个满足切换条件的工作频点信息。 [0025] In addition to the switch 203 in the manner described in the above-described steps 201 and, if the source eNB determines that a handover condition is satisfied the target cell is a single-carrier cell, comprising a target cell may be sent to the target eNB identifier request message, the handover request message need not contain a working condition satisfies UE handover frequency information. 因为目标小区为单载波小区,因此,目标eNB接收到切换请求消息后,判断该目标小区的频点能够接纳UE的接入,如果是,确定目标小区接纳UE多个工作频点中的一个,继续执行步骤203;否则,说明目标小区的当前负荷已经不能接纳UE的接入,因此,向源eNB发送不允许切换响应,结束该切换流程。 Because after the target cell is a single-carrier cell, therefore, the target eNB receives the handover request message, determining frequency of the target cell is capable of receiving access of the UE, if so, determining a target cell UE receiving the plurality of working frequency point, proceed to step 203; otherwise, indicating the current load of the target cell has been unable to receive the access of the UE, and therefore, does not allow the source eNB sends a handover response to the handover process ends.

[0026] 步骤203 :目标eNB根据该UE的业务QoS要求,在目标小区中为UE预留满足其业务QoS要求的载波资源,并向源eNB返回允许切换响应消息。 [0026] Step 203: the target eNB according to the service requirements of QoS of the UE, in the target cell carrier resources reserved for the UE satisfy the QoS requirements of their business, and to allow the source eNB returns a handover response message.

[0027] 本步骤中,目标eNB可以从诸如移动性管理实体(MME)等上层网络设备中获取UE 的业务QoS要求,例如,UE所使用的业务所需的带宽信息、速率信息或时延要求等,为UE预留满足其业务QoS要求的载波资源。 [0027] In this step, the target eNB may obtain QoS service requirements from the UE, such as a mobility management entity (MME) and other upper-layer network device, e.g., a desired service bandwidth used by the UE information, rate information or latency requirements etc., reserved for the UE carrier resources to meet their business QoS requirements.

[0028] 其中,预留的载波资源可以是多载波资源,也可以是单载波资源。 [0028] wherein the carrier resources reserved resources may be a multi-carrier, single carrier may be a resource. 其中,多载波资源可以是一个多载波小区内的多载波资源或者多个单载波小区聚合成的多载波资源;单载波资源可以是一个多载波小区内的单载波资源或者单载波小区的单载波资源。 Wherein the multi-carrier resources may be a multi-carrier resource within a multi-carrier cell or a plurality of cells aggregated into a single carrier multi-carrier resource; single-carrier resources may be a single carrier or single-carrier resources in a multi-cell single-carrier carrier cell resources.

[0029] 预留的具体是多载波资源还是单载波资源除了和UE的业务QoS要求相关之外,还和目标eNB中小区的载波带宽有关。 [0029] The particular multi-carrier reserved resources or resources in addition to a single carrier and associated service requirements QoS UE, but also, and the target eNB cell carrier bandwidth related. 例如,如果UE在源小区中采用2个载波聚合,每个载波的带宽为10M,而目标eNB中小区的每个载波的带宽为20M时,则采用单载波传输即可,即预留1个载波资源;目标eNB中小区的每个载波的带宽仍为IOM时,则在目标eNB仍需要采用2个载波聚合,即预留2个载波资源。 For example, if the UE in the source cell using two carrier aggregation, the bandwidth per carrier is 10M, and the bandwidth of each carrier in the cell of the target eNB is 20M, single carrier transmission is used to, i.e., a reserved carrier resources; when the bandwidth per carrier in the cell of the target eNB still the IOM, there remains a need in the target eNB 2 uses carrier aggregation, i.e. two carriers reserved resources.

[0030] 更优地,源eNB还可以在步骤201发送的切换请求消息中包含UE在源小区中的CA 信息,以供目标eNB在预留载波资源时使用。 The handover request message [0030] More preferably, the source eNB may also transmit in step 201 the UE CA information contained in the source cell, the target eNB for use in carrier resource reservation. 其中,CA信息可以是UE在源小区中使用的载波频率、带宽等,目标eNB可以在满足UE的业务QoS要求的前提下,选择与UE在源小区中的CA信息接近的载波资源。 Wherein, CA information may be used by the UE in the source cell carrier frequency and bandwidth, the target eNB may be the premise of meeting the QoS requirements of services the UE, the UE selecting the CA message in the source cell is close to carrier resources. 这样可以使得UE在切换后尽量小的改变工作频率,从而提高切换效率也为UE节省能量。 Such as small as possible so that the UE can change the operating frequency after the handover, thereby improving the energy-saving efficiency handover UE.

[0031] 还有一种方式,由于UE会向源eNB上报测量信息,该测量信息中包含目标eNB中各载波的信号质量状况,因此,源eNB可以根据UE上报的测量信息,确定目标eNB中满足信号质量要求的载波,将满足信号质量要求的载波信息携带在切换请求消息中。 [0031] In yet another mode, the UE may report measurement information due to the source eNB, the measurement information includes the signal quality of each carrier of the target eNB, and thus, the source eNB according to the measurement information reported by the UE is determined to meet the target eNB carrier signal quality information carrier, the signal quality to meet the requirements in the handover request message carries. 目标eNB可以在这些满足信号质量要求的载波信息中为UE预留满足该UE的业务QoS要求的载波资源,从而提高服务质量。 The target eNB may be reserved for the UE carrier resources to meet the business requirements of QoS of the UE carrier information in these signals meet quality requirements, thereby improving the quality of service. 其中,满足信号质量要求的载波信息可以是满足信号质量要求的载波标识;或者是满足信号质量要求的载波标识以及这些载波的信号质量信息,以便目标eNB能够根据这些载波的信号质量优先选择信号质量高的载波。 Wherein, to meet signal quality requirements carrier information may meet signal quality requirements carrier identifier; or meet carrier identification and the signal quality information of the carrier signal quality requirements, so that the target eNB can preferentially select the signal quality of the signal quality of these carriers high carriers.

[0032] 如果目标eNB能够为多载波终端预留满足该多载波终端的业务QoS要求的载波资源,则向源eNB返回允许切换响应消息,否则,可以向源eNB返回不允许切换响应消息。 [0032] If the target eNB is able to satisfy a multi-carrier terminal carrier resources reserved for the multi-carrier terminal service QoS requirements, then allowed to return to the source eNB handover response message, otherwise, the source eNB may return a handover response message is not allowed.

[0033] 步骤204 :源eNB向UE发送切换命令,该切换命令中包含目标小区所接纳的频点 [0033] Step 204: The source eNB sends a handover command to the UE, the handover command contains the receiving frequency of the target cell

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[0034] 目标eNB向源eNB返回的切换响应消息中包含切换命令,该切换命令中携带目标小区所接纳的频点信息,源eNB将该切换命令转发给UE。 [0034] The target eNB returns a Handover Response message to the source eNB included in the handover command, the target cell handover command carries the receiving frequency information, the source eNB forwards the handover command to the UE.

[0035] 步骤205 =UE根据切换命令中的频点信息,与目标小区所接纳的频点建立连接从而接入目标小区。 [0035] Step 205 = UE established based frequency handover command frequency information, and the target cell is connected so as to receive access to a target cell.

[0036] UE与目标小区所接纳的频点建立的连接可以仅是信令连接,也可以是信令连接和数据连接。 [0036] UE and the target cell frequency point accepted connection may only be established signaling connection, the signaling may be and data connections.

[0037] 目标eNB在针对该频点做接纳判决时,也会确定该频点是否仅用于信令连接,或者同时用于信令连接和数据连接,并在允许切换响应消息中进行指示,源eNB根据允许切换响应消息中的指示,在切换命令中也指示该频点用于信令连接,或者用于信令连接和数据连接,UE根据切换命令中的指示执行。 [0037] In doing the target eNB decision for receiving the frequency, it will also determine whether the frequency is only used for signaling connections, or both for signaling and data connections, and allows handover response message instructs the source eNB allow handover response message indicates, also in the handover command indicates that the frequency used for signaling connections, or for signaling and data connections, the UE performs handover command according to the instructions.

[0038] 步骤206 =UE接入目标小区后,目标eNB在预留的载波资源上调度UE进行数据传输。 After [0038] Step 206 = UE accesses the target cell, the target eNB schedules the UE on the reserved resources for data transmission carrier.

[0039] 该过程可以通过无线资源控制(RRC)连接重配过程实现,例如,可以在RRC连接重配消息中通知UE在预留的载波资源上进行数据传输。 [0039] The process may be achieved by a connection reconfiguration process radio resource control (the RRC), for example, in connection reconfiguration message notifies the UE for data transmission on the reserved carrier resources in the RRC.

[0040] 如果预留的载波资源为多载波资源,则UE在预留的多载波资源上继续进行CA传输,从而实现从多载波到多载波的切换。 [0040] If the carrier resources reserved for the multi-carrier resources, the UE proceeds CA transmission on the reserved resources to multiple carriers, so that switching from the multi-carrier to multi-carrier.

[0041] 也就是说,在该实施例的切换过程中,UE可以首先与目标小区的一个载波建立信令连接,再通过目标eNB的调度与多个载波建立数据连接;也可以首先与目标小区的一个载波同时建立数据和信令连接,再通过目标eNB的调度与多个载波建立数据连接。 [0041] That is, in the switching process in this embodiment, the UE may first establish a signaling connection carrier target cell, and then a data connection to a plurality of carriers by the target eNB scheduling; target cell may be first a data carrier and simultaneously establishing a signaling connection, and then create a data connection with a plurality of carriers by the target eNB scheduling.

[0042] 需要说明的是,在切换命令中还可以包含目标eNB为UE预留的载波资源信息,UE 在接入目标小区后,能够直接根据切换命令在为UE预留的载波资源上传输数据。 [0042] Incidentally, in the handover command may further comprise the target eNB carrier resources reserved for the UE information, after accessing the target cell can transmit data on the carrier resources reserved for the UE according to the handover command directly UE . 或者,目标eNB在调度UE的过程中再将为UE预留的载波资源信息发送给UE。 Alternatively, the target eNB of the UE in the scheduling process and then the carrier resources reserved for the UE transmits information to the UE.

[0043] 以上是对本发明所提供的方法进行的详细描述,下面对本发明所提供的系统进行详细描述。 [0043] The above is a detailed description of the method provided by the present invention, the following system is provided according to the present invention is described in detail. 图3为本发明实施例提供的系统结构图,如图3所示,该系统可以包括:目标eNB 301、源eNB 302 和UE 303。 Figure 3 system configuration diagram according to an embodiment of the present invention shown in FIG. 3, the system may comprise: a target eNB 301, the source eNB 302 and a UE 303.

[0044] 目标eNB 301用于确定在目标小区接纳UE 303多个工作频点中的一个时,为UE 303预留满足该UE 303的业务QoS要求的载波资源,通过源eNB 302向UE 303发送包含目标小区所接纳的频点信息的切换命令;在UE 303接入目标小区后,在为UE 303预留的载波资源上调度UE 303的数据传输。 When [0044] the target eNB 301 for determining a plurality of UE 303 receiving the working frequency in the target cell for UE 303 to reserve resources of the UE 303 to meet carrier service QoS requirements, UE 303 sends 302 via the source eNB the handover command comprises receiving target cell frequency point information; in the UE 303 accesses the target cell, UE 303 of scheduling data transmissions for the UE 303 on carriers reserved resources.

[0045] UE 303用于根据接收到的切换命令中的频点信息,利用目标小区所接纳的频点接入目标小区。 [0045] UE 303 according to the switching frequency of the received command information, using the frequency of the receiving target cell accesses the target cell.

[0046] 更进一步地,源eNB在确定满足切换条件后与目标eNB之间的交互过程可以采用以下两种方式: [0046] Still further, the source eNB after determining the handover condition is satisfied and the interaction process between the target eNB may take two ways:

[0047] 第一种方式:源eNB 302用于向目标eNB 301发送包含目标小区标识和UE303 的一个满足切换条件的工作频点信息的切换请求消息;接收到判决失败的通知后,向目标eNB 301发送包含目标小区标识和UE 303满足切换条件的其一个工作频点信息的切换请求消息; [0047] The first embodiment: the source eNB 302 to target eNB 301 transmits a handover target cell identifier and a switching condition is satisfied UE303 working frequency information request message; decision after receiving the notification of failure, the target eNB which is a work target cell ID 301 transmits a handover condition is satisfied and the UE 303 frequency information of the handover request message;

[0048] 目标eNB 301,还用于接收到切换请求消息后,判断目标小区中切换请求消息中包含的工作频点是否能够接纳UE 303的接入,如果是,则执行通过源eNB 302向UE 303发送包含目标小区所接纳的频点信息的切换命令;否则,向源eNB 302发送判决失败的通知。 [0048] The target eNB 301, is also configured to receive a handover request message, determining whether the target cell in the handover request message includes the working frequency of the UE 303 is capable of receiving access, if yes, to the UE via the source eNB 302 containing the target cell 303 sends the accepted frequency handover command information; otherwise, sending a notification to the source of the failure judgment eNB 302. [0049] 第二种方式:源eNB302还可以用于在目标小区为单载波小区时,向目标eNB 301 发送包含目标小区标识的切换请求消息;接收到不允许切换的响应后,结束当前切换流程。 [0049] The second way: eNB302 source may also be used in the target cell is a single-carrier cell, the target eNB 301 transmits a handover request message to the target cell identifier; response after receiving the handover is not allowed, the process ends the current handover .

[0050] 目标eNB 301接收到该切换请求消息后,判断目标小区是否能够接纳UE303的接入,如果是,确定目标小区接纳UE 303多个工作频点中的一个;否则向源eNB 302发送不允许切换的响应。 [0050] The target eNB 301 receives the handover request message, determining whether the target cell is capable of receiving access UE303, if so, determining a target cell UE 303 receiving the plurality of working frequency point; otherwise not sent to the source eNB 302 allowing response switch.

[0051] 在上述过程中,目标eNB 301在通过源eNB 302向UE 303发送切换命令过程中, 可以向源eNB 302返回包含目标小区所接纳的频点信息的切换命令,源eNB 302向UE 303 转发该切换命令。 [0051] In the above process, the target eNB 301 in the process of sending a handover command to the UE 303 via the source eNB 302 may be returned handover command includes a target cell by receiving the frequency information to the source eNB 302, the source eNB 302 to the UE 303 forward the handover command.

[0052] 源eNB 302还可以用于在切换请求消息中携带UE 303在源小区中的多载波聚合fn息o [0052] The source eNB 302 can also be used to carry the UE 303 in a handover request message in the source cell in the multi-carrier aggregation information fn o

[0053] 目标eNB 301根据UE 303在源小区中的多载波聚合信息,执行为UE 303预留满足该UE 303的业务服务质量QoS要求的载波资源。 [0053] The target eNB 301 multi-carrier aggregation information in the UE 303 according to the source cell, UE 303 performs is reserved to meet quality of service requirements of QoS of the UE 303 of carrier resources.

[0054] 或者,源eNB 302还可以用于根据UE 303上报的测量信息,确定目标eNB301中满足信号质量要求的载波,并将满足信号质量要求的载波信息携带在切换请求消息中。 [0054] Alternatively, the source eNB 302 can also be used in accordance with the measurement information reported by the UE 303, determining a target eNB301 carrier signal satisfies quality requirements, and to meet the quality requirements of the carrier signal information is carried in the handover request message.

[0055] 目标eNB 301在满足信号质量要求的载波中为UE 303预留满足该UE 303的业务QoS要求的载波资源。 Carrier [0055] The target eNB 301 meet signal quality requirements are satisfied for the UE 303 to reserve resources of the UE 303 carrier service QoS requirements.

[0056] 具体地,UE 303与目标小区所接纳的频点建立信令连接,或者同时建立信令连接和数据连接,从而接入目标小区。 [0056] Specifically, UE 303 and the target cell receiving frequency signaling connection is established, or simultaneously establish a signaling connection and a data connection to access the target cell.

[0057] 根据UE 303具体的业务QoS要求以及目标小区的载波带宽状况,目标eNB301为UE 303预留的载波资源可以为一个多载波小区内的多载波资源或者单载波资源;或者多个单载波小区聚合成的多载波资源,或者一个单载波小区的单载波资源。 [0057] The carrier UE 303 bandwidth condition of service QoS requirements and specific target cell, the target UE 303 for the reserved eNB301 carrier resources may be single carrier or multi-carrier resource resource within a multi-carrier cell; or a plurality of single carrier cells aggregate into a multi-carrier resource, a resource or a single-carrier single-carrier cell.

[0058] 由以上描述可以看出,本发明所提供的方法和系统中,目标eNB在确定目标小区接纳UE多个工作频点中的一个时,为UE预留满足该UE的业务QoS要求的载波资源,通过源eNB向UE发送包含目标小区所接纳的频点信息的切换命令;UE根据切换命令中的频点信息,利用目标小区所接纳的频点接入目标小区后,目标eNB在为UE预留的载波资源上调度UE的数据传输。 When [0058] As can be seen from the above description, the method and system of the present invention provided herein, the target eNB in ​​the target cell is determined to receive more than one UE in a working frequency point, reserved for the UE satisfy the QoS service requirements of the UE carrier resources, the UE by the source eNB transmits a handover command accepted by the target cell frequency point information; UE according to the handover command frequency information, target cell after receiving the frequency use to access the target cell, the target eNB for the schedule data transmission of the UE on the carrier resources reserved for UE. 从而实现多载波系统下UE从源小区到目标小区的切换,如果目标eNB 为UE预留的满足业务QoS要求的载波资源为多载波资源,则UE可以实现从多载波到多载波的切换。 Thereby realizing the multi-carrier system handover UE from the source cell to a target cell, the target eNB for the UE if the reserved carriers meet the business requirements of QoS resources for multi-carrier resources, the UE may implement the switching from the multi-carrier to multi-carrier.

[0059] 另外,本发明提供的方法和系统最大限度地重用了长期演进(LTE)系统中的接口和核心网的切换过程,满足了业务QoS的同时也增强了用户体验。 [0059] Further, the present invention provides a method and system to maximize reuse of the long term evolution (LTE) system handover procedure interface and the core network to meet the QoS service but also enhances the user experience.

[0060] 以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明保护的范围之内。 [0060] The foregoing is only preferred embodiments of the present invention but are not intended to limit the present invention, all within the spirit and principle of the present invention, any changes made, equivalent substitutions and improvements should be included within the scope of protection of the present invention.

8 8

Claims (15)

  1. 一种多载波聚合系统的小区切换方法,其特征在于,该方法包括:A、目标基站eNB确定在目标小区接纳UE多个工作频点中的一个时,为UE预留满足该UE的业务服务质量QoS要求的载波资源,通过源eNB向UE发送包含目标小区所接纳的频点信息的切换命令;B、所述UE根据切换命令中的频点信息,利用目标小区所接纳的频点接入目标小区;C、所述目标eNB在为所述UE预留的载波资源上调度所述UE的数据传输。 Cell handover method in a multi-carrier aggregation system, wherein the method comprises: A, the target base station eNB UE determines to receive the plurality of working frequency point in the target cell, reserved for the UE to serve the UE meet business quality QoS requirements of carrier resources, the target cell transmits a handover command to the receiving frequency point information to the UE via the source eNB; B, the UE according to the handover command frequency information, using the target cell access point receiving frequency target cell; C, the target eNB scheduling data transmissions from the UE to the UE on resources reserved carriers.
  2. 2.根据权利要求1所述的方法,其特征在于,在步骤A之前还包括:D1、源eNB向目标eNB发送包含目标小区标识和所述UE的一个满足切换条件的工作频点信息的切换请求消息;D2、目标eNB接收到所述切换请求消息后,判断目标小区中所述切换请求消息中包含的工作频点是否能够接纳所述UE的接入,如果是,执行所述步骤A ;否则,向源eNB发送判决失败的通知,执行步骤D3;D3、源eNB接收到判决失败的通知后,向目标eNB发送包含目标小区标识和所述UE满足切换条件的其它一个工作频点信息的切换请求消息,转至步骤D2。 2. The method according to claim 1, wherein prior to step A further comprises: switching information D1, the source eNB transmits a cell identifier that satisfies the target UE and the switching condition of the working frequency to the target eNB request message; after D2, the target eNB receives the handover request message, determining whether the target cell in the handover request message includes working frequency able to receive access to the UE, if yes, performing the step a; otherwise, the failure notification to the source eNB transmits the judgment, executing step D3; notification D3, the source eNB receives the failure decision, the eNB sends the other a working cell comprising a target UE identifier and the switching condition is satisfied to the target frequency information the handover request message, go to step D2.
  3. 3.根据权利要求1所述的方法,其特征在于,当所述目标小区为单载波小区时,在所述步骤A之前还包括:源eNB向目标eNB发送包含目标小区标识的切换请求消息;目标eNB 接收到所述切换请求消息后,判断目标小区是否能够接纳所述UE的接入,如果是,确定目标小区接纳UE多个工作频点中的一个,执行所述步骤A ;否则,向源eNB发送不允许切换响应,结束流程。 3. The method according to claim 1, wherein, when the target cell is a single-carrier cell, prior to said step A further comprising: a source eNB transmits a handover target cell identity request message to the target eNB; after the target eNB receives the handover request message, determining whether the target cell is capable of receiving access to the UE, if so, determining a target cell UE receiving the plurality of working frequency point, performing the step a; otherwise, the The source eNB transmits a handover response not allowed, the process ends.
  4. 4.根据权利要求1、2或3所述的方法,其特征在于,所述通过源eNB向UE发送包含目标小区所接纳的频点信息的切换命令具体为:所述目标eNB向源eNB发送包含切换命令的允许切换响应消息,源eNB将该切换命令转发给所述UE,其中,所述切换命令中携带目标小区所接纳的频点信息。 4. The method of claim 2 or claim 3, wherein said target cell transmits a handover command frequency information accepted by the source eNB to the UE specifically comprises: sending the target eNB to the source eNB comprising switch command allows the handover response message, the source eNB to the handover command to the UE forwards, wherein the handover command carries frequency information of the target cell is accepted.
  5. 5.根据权利要求1、2或3所述的方法,其特征在于,所述切换命令中还包含所述目标eNB为UE预留的载波资源信息,所述UE在步骤B之后,在所述为UE预留的载波资源上传输数据;或者,在所述步骤C中,所述目标eNB在调度所述UE的过程中将为UE预留的载波资源信息发送给所述UE。 5. The method according to claim 2 or 3, wherein said resource information carrier handover command further comprises the reserved target eNB for the UE, the UE after step B, and in the transmission data carrier resources reserved for the UE; or, in the step C, the carrier resources in the target eNB scheduling the UE for the UE during the reservation information is transmitted to the UE.
  6. 6.根据权利要求2或3所述的方法,其特征在于,所述切换请求消息中还包括所述UE 在源小区中的多载波聚合信息,所述目标eNB根据所述UE在源小区中的多载波聚合信息, 执行所述为UE预留满足该UE的业务QoS要求的载波资源;或者,所述源eNB根据UE上报的测量信息,确定目标eNB中满足信号质量要求的载波,并将满足信号质量要求的载波信息携带在所述切换请求消息中,所述目标eNB在所述满足信号质量要求的载波中为UE预留满足该UE的业务QoS要求的载波资源。 The method according to claim 2 or claim 3, wherein the handover request message further comprises a multi-carrier aggregation information to the UE in the source cell, the target eNB of the UE in the source cell according to the multi-carrier aggregation information, performs the carrier resources reserved for the UE satisfy the service requirements of QoS of the UE; or the source eNB based on the measurement information reported by the UE, determine a carrier signal quality target eNB is satisfied, and carrier signal information satisfies quality requirements carried in the handover request message, the target eNB carrier signal satisfies the quality requirements of the carrier resources reserved for the UE satisfy the QoS service requirements of the UE.
  7. 7.根据权利要求1所述的方法,其特征在于,步骤B中所述利用目标小区所接纳的频点接入目标小区包括:所述UE与所述目标小区所接纳的频点建立信令连接,或者同时建立信令连接和数据连接,从而接入目标小区。 7. The method according to claim 1, wherein said step B with the target cell by receiving the frequency accesses the target cell comprises: the UE and the target cell by receiving the frequency setup signaling connection, or while establishing a signaling and data connections to access the target cell.
  8. 8.根据权利要求1、2、3或7所述的方法,其特征在于,预留的所述载波资源为一个多载波小区内的多载波资源或单载波资源,或者多个单载波小区聚合成的多载波资源,或者一个单载波小区的单载波资源。 1,2,3 or 8. The method according to claim 7, wherein the carrier resources reserved for a single carrier or multi-carrier resource resources within a multi-carrier cell, or a plurality of single carrier cell aggregation resources into a multi-carrier, single carrier or single-carrier resources to a cell.
  9. 9. 一种多载波聚合系统的小区切换系统,其特征在于,该系统包括:目标eNB、源eNB和UE ;所述目标eNB,用于确定在目标小区接纳所述UE多个工作频点中的一个时,为所述UE 预留满足该UE的业务QoS要求的载波资源,通过所述源eNB向所述UE发送包含目标小区所接纳的频点信息的切换命令;在所述UE接入目标小区后,在为所述UE预留的载波资源上调度所述UE的数据传输;所述UE,用于根据接收到的切换命令中的频点信息,利用目标小区所接纳的频点接入目标小区。 A multi-carrier aggregation system cell switching system, characterized in that, the system comprising: a target eNB, the source eNB and the UE; the target eNB, receiving means for determining a plurality of operating frequencies of the UE in the target cell one, the carrier for the UE to reserve the resources to meet the QoS service requirements of the UE, the target cell transmits a handover command to the receiving frequency point information to the UE by the eNB to the source; the UE access after the target cell, the UE scheduling data transmissions on a carrier reserved for the UE resource; the UE, frequency handover command according to the information received by the receiving frequency of the target cell access into the target cell.
  10. 10.根据权利要求9所述的系统,其特征在于,所述源eNB,用于向所述目标eNB发送包含目标小区标识和所述UE的一个满足切换条件的工作频点信息的切换请求消息;接收到判决失败的通知后,向所述目标eNB发送包含目标小区标识和所述UE满足切换条件的其它一个工作频点信息的切换请求消息;所述目标eNB,还用于接收到所述切换请求消息后,判断目标小区中所述切换请求消息中包含的工作频点是否能够接纳所述UE的接入,如果是,则执行通过所述源eNB向所述UE 发送包含目标小区所接纳的频点信息的切换命令;否则,向所述源eNB发送判决失败的通知。 10. The switching system of claim 9, wherein the source eNB, comprising a working frequency point satisfies a target cell identifier and the switching condition of the UE to the target eNB transmits information request message ; decision after receiving the notification of failure, to the target eNB transmits a target cell ID and the UE satisfies a handover other working conditions of the switching frequency information request message; the target eNB, for receiving the further after the handover request message, the target cell is determined whether the handover request message includes a working frequency point capable of receiving access to the UE, if yes, performing accepted by the source eNB transmits to the UE containing a target cell frequency information of the handover command; otherwise, send the judgment of a failure notification to the source eNB.
  11. 11.根据权利要求9所述的系统,其特征在于,所述源eNB,还用于在目标小区为单载波小区时,向目标eNB发送包含目标小区标识的切换请求消息;接收到不允许切换的响应后, 结束当前切换流程;所述目标eNB接收到所述切换请求消息后,判断目标小区是否能够接纳所述UE的接入,如果是,确定目标小区接纳UE多个工作频点中的一个;否则,向源eNB发送不允许切换的响应。 11. The system according to claim 9, characterized in that, the source eNB, the target cell is further configured in single carrier cell, the target eNB transmits a handover request message to the target cell identifier; receiving the handover is not allowed after the response, the end of the current handover procedure; the target eNB receives the handover request message, determining whether the target cell is capable of receiving access to the UE, if so, determining a target cell UE receiving a plurality of working frequency points one; otherwise, not allowed to send a response to the handover source eNB.
  12. 12.根据权利要求10或11所述的系统,其特征在于,所述源eNB还用于在所述切换请求消息中携带所述UE在源小区中的多载波聚合信息;所述目标eNB根据所述UE在源小区中的多载波聚合信息,执行所述为UE预留满足该UE的业务QoS要求的载波资源。 12. The system according to claim 10 or claim 11, characterized in that, the source eNB further multi-carrier aggregation for carrying information of the UE in the source cell in the handover request message; according to the target eNB the UE in the source cell in the multi-carrier aggregation information, performs the carrier resources reserved for the UE satisfy the QoS service requirements of the UE.
  13. 13.根据权利要求10或11所述的系统,其特征在于,所述源eNB还用于根据UE上报的测量信息,确定目标eNB中满足信号质量要求的载波,并将满足信号质量要求的载波信息携带在所述切换请求消息中;所述目标eNB在所述满足信号质量要求的载波中为UE预留满足该UE的业务QoS要求的载波资源。 Carrier 13. The system according to claim 10 or claim 11, characterized in that, the source eNB further according to the measurement information reported by the UE, determine a carrier signal quality target eNB is satisfied, and the signal quality to meet the requirements of information carried in the handover request message; the target eNB carrier signal satisfies the quality requirements of the carrier resources reserved for the UE satisfy the QoS service requirements of the UE.
  14. 14.根据权利要求9所述的系统,其特征在于,所述UE与所述目标小区所接纳的频点建立信令连接,或者同时建立信令连接和数据连接,从而接入目标小区。 14. The system according to claim 9, wherein establishing the UE and the target cell by receiving the signaling connection frequencies, or both to establish signaling and data connections to access the target cell.
  15. 15.根据权利要求9、10、11或14所述的系统,其特征在于,所述目标eNB为所述UE预留的载波资源为一个多载波小区内的多载波资源或单载波资源,或者多个单载波小区聚合成的多载波资源,或者一个单载波小区的单载波资源。 15. The system of claim 9, 10 or claim 14, wherein the target eNB for the UE carrier resources reserved for the single-carrier or multi-carrier resource resources within a multi-carrier cell, or a plurality of cells aggregated into a single carrier multi-carrier resource, a resource or a single-carrier single-carrier cell.
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WO2012051903A1 (en) * 2010-10-21 2012-04-26 华为技术有限公司 Multi-carrier switching method and device
CN102958125A (en) * 2011-08-30 2013-03-06 鼎桥通信技术有限公司 Transferring method among different RNCs (Radio Network Controller) in TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system
WO2013113280A1 (en) * 2012-02-01 2013-08-08 华为技术有限公司 Method and device for achieving multi-cell service on base station equipment
CN103906147A (en) * 2012-12-25 2014-07-02 电信科学技术研究院 Method and device for determining target cell
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CN105357760A (en) * 2015-09-29 2016-02-24 努比亚技术有限公司 Data transmission method and data transmission device
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US9445333B2 (en) 2010-10-21 2016-09-13 Huawei Technologies Co., Ltd. Method and device for switching of multi-carrier
WO2012051903A1 (en) * 2010-10-21 2012-04-26 华为技术有限公司 Multi-carrier switching method and device
US9973991B2 (en) 2010-10-21 2018-05-15 Huawei Technologies Co., Ltd. Method and device for switching of multi-carrier
CN102958125A (en) * 2011-08-30 2013-03-06 鼎桥通信技术有限公司 Transferring method among different RNCs (Radio Network Controller) in TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system
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US9668257B2 (en) 2012-02-01 2017-05-30 Huawei Technologies Co., Ltd. Method and device for implementing multi-cell service on base station device
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CN103906147A (en) * 2012-12-25 2014-07-02 电信科学技术研究院 Method and device for determining target cell
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WO2017201700A1 (en) * 2016-05-26 2017-11-30 华为技术有限公司 Cell handover method and base station

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