CN100493228C - Switchover controll method of multiple frequency points system - Google Patents

Switchover controll method of multiple frequency points system Download PDF

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CN100493228C
CN100493228C CN 200510053433 CN200510053433A CN100493228C CN 100493228 C CN100493228 C CN 100493228C CN 200510053433 CN200510053433 CN 200510053433 CN 200510053433 A CN200510053433 A CN 200510053433A CN 100493228 C CN100493228 C CN 100493228C
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handover
user equipment
target
cell
primary carrier
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CN 200510053433
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CN1832621A (en
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周德锁
雷 张
赵瑾波
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大唐移动通信设备有限公司
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Abstract

本发明提供一种多频点系统中的切换控制方法,包括步骤:用户设备得到相关的测量配置参数,配置小区列表;用户设备上报本小区和邻小区的测量结果;无线网络控制器接收用户设备上报的测量结果;对用于切换的目标小区列表进行维护;若用户设备收到无线网络控制器的切换命令,则接入该切换命令指示的主载波并和建立新的无线连接;该用户设备应向无线网络控制器发送切换完成消息并停留在主载波上工作,随后调整到辅助载波上;用户设备发送表明切换成功的消息。 The present invention provides a method of handover control in a multi-frequency system, comprising the steps of: a user equipment to get the relevant measurement configuration parameters, configuration cell list; user equipment reports the measurement result of the serving cell and neighbor cells; radio network controller receives the user equipment a measurement result reported; for a list of target cell for handover for maintenance; if the user equipment a radio network controller receives a handover command, the access command indicating the primary carrier and the handover and establish a new wireless connection; the user equipment should the radio network controller transmits the handover complete message and stay in the work on the primary carrier, and then adjusted to the auxiliary carrier; indicates that the user equipment sends a handover success message. 本发明的多频点系统中的切换控制方法具有切换成功率高和系统掉话率较低的优点,同时该切换方式对资源的预留更加灵活和高效,提高了整个系统的资源利用率。 Handover control method of multi-frequency system of the present invention has the advantage of low success rate of handover and call drop rate of the system, while the switching mode of the reserved resources more flexible and efficient, improved resource utilization of the system.

Description

多频点系统中的切换控制方法 Multi-frequency handover control method of the points in the system

技术领域 FIELD

本发明涉及蜂窝移动通信领域的切换控制技术,更确切的说,涉及配置共用公共信道的多频点的TDD/CDMA蜂窝移动通信系统中的切换控制技术。 The present invention relates to the field of switching a mobile cellular communications control techniques, and more specifically, relates to a multi-frequency switch configured to share a common channel of the TDD / CDMA cellular mobile communication system, control technology.

背景技术 Background technique

为了满足下一代数字蜂窝系统中移动用户不断增长的需求,使用扇区化和多载波技术可以减少系统内干扰,并因而增大系统的容量。 In order to meet the next generation digital cellular systems the growing needs of mobile users, the use of multi-carrier technology sector and intra-system interference may be reduced, and thus increasing system capacity. 小区扇区化的主要优点是抑制了码间干扰, 与非扇区化的小区相比,在用户数目相同的条件下,扇区化的小区通信质量将得到提升, 或者在维持同样的系统性能的情况下,扇区化能增加小区容纳的用户数目。 The main advantage of cell sector interference between codes is suppressed, compared with un-sectorized cells, the number of users in the same conditions, the cell sectorized communication quality will be enhanced, or to maintain the same performance in the case where the sector of the cell to increase the number of users accommodated.

当一个含有多个频点的基站覆盖3个扇区,目前的做法一般是将每个小区的三个扇区中的每个载波看作是独立的逻辑小区,在无线资源管理(RRM)算法中统一对一个/多个扇区中的三个载波上的资源进行分配和管理。 When the base station comprising a plurality of frequency points covering three sectors, the current practice is generally the three sectors of each cell in each carrier is regarded as separate logical cell, (the RRM) in wireless resource management algorithm the uniform resource on one or more / sector allocation and management of three carriers. 例如,对于三扇区三载频的情况,则认为有9个逻辑小区,针对每个小区完成独立的操作。 For example, in the case of three sector three carrier frequencies, that is nine logical cells, independent operation is completed for each cell. 也即9个小区发送各自的导频和广播信息。 9 i.e. each cell transmitted pilot and broadcast information. 因此,在这种情况下,每个载波都必须配置一套完整的公共信道,而其中广播信道(BCH)、 前向接入信道(FACH)和寻呼信道(PCH)为全向信道。 Thus, in this case, each carrier must be configured with a complete set of common channel, and wherein the broadcast channel (the BCH), a forward access channel (FACH) and a paging channel (PCH) is a channel omnidirectional. 这样,多载波基站在实际组网时不但对发射机功率要求很高,而且,在同频组网的情况下,载波间广播信道的干扰也很严重。 Thus, when the multi-carrier wavelet stand not only for the actual networking transmitter power requirement is high, and, in the case of co-frequency networking, broadcast channel interference between carriers is also very serious. 同时系统的资源利用率也比较低。 At the same time the system resource utilization is relatively low. 为了解决这些问题,提出了对于时分同步-码分多址(TD-SCDMA)系统,可以仅在扇区的一个载频上发送导频和广播信息,而其它频点只提供业务信道。 In order to solve these problems, a synchronization for time division - Code Division Multiple Access (TD-SCDMA) system, a carrier frequency may only transmit pilot and broadcast information sector, while other frequency only provides traffic channel. 对于只在主频点配置公共信道而其它辅频点只作为业务信道的TD-SCDMA系统,其切换方法与将每个小区的多个扇区中的每个载波看作是独立的逻辑小区中所使用的切换方法相比,有较大的不同。 Arranged only for the common channel and the other only as a secondary frequency traffic channel TD-SCDMA system at the point frequency, the method which switches the plurality of sectors in each cell of each carrier is regarded as separate logical cell compared to the switching method used, quite different. 其中后者可以使用与单载频系统相同的切换算法。 Wherein the latter can be used with a single system with the same carrier frequency switching algorithm. 目前, 对于单载频系统的切换, 一般用户设备(UE)根据测量控制信息对邻小区进行测量和上报, 无线网络控制器(RNC)根据测量结果进行判决,并选择目标小区,通知UE执行切换,所有这些过程都不存在目标小区或目标逻辑小区内有多个频点的问题。 Currently, for a single carrier frequency switching system, a general user equipment (UE) according to the measurement control information to measure and report the neighbor cell, a radio network controller (RNC) for judgment according to the measurement results, and select the target cell, UE performs handover notify All of these processes are not present the target cell or a plurality of frequencies within the target cell the logical problems.

现有的时分双工码分多址(TDD/CDMA)移动通信系统所采用的切换方法都是基于把每个载扇作为一个独立的逻辑小区进行的,其测量、判决、接纳控制以及执行都是标准的协议过程,这些方法对于单载频系统来说是可行、有效并满足需求的。 The method of switching a conventional time division duplex code division multiple access (TDD / CDMA) mobile communication system are used in each carrier based on the logical sector as an independent cell for which the measurement, judgment, and performs admission control are is a standard protocol procedure, these methods for single carrier systems is feasible, effective, and meet the demand. 但是,对于配置多个载波且共用广播和公用信道的TDD/CDMA系统,由于仅在扇区的一个载频上发送导频和广播信息,而其它频点只提供业务信道,因此,切换的测量过程、判决过程、接纳过程和最后的执行过程有很大的不同,原来单载频小区的切换控制方法已不能完全适用。 However, for a plurality of carriers and a common broadcast and common channel TDD / CDMA system, since only a sector of a carrier frequency transmit pilot and broadcast information, and the other frequency provides only the traffic channel, and therefore, measurement switch process, decision process, and the process of receiving the last execution is very different, the original handover control method in a single carrier frequency can not fully applicable cell. 例如,在多载频系统中,用户在切换时既可以工作在目标逻辑小区的主载波上,也可以工作在辅助 For example, in a multi-carrier system, a user can operate both when switching on the primary carrier target logical cell, can also work in the secondary

载波上,而单载频系统中的用户在切换时只能工作在目标小区内的唯一的载波上;在接纳 On a carrier, and the carrier frequency only single-carrier system, a user can only work when the handover in the target cell; the receiving

时,原来只需要对目标小区默认的单频点资源进行判决,而现在需要对目标小区所有频点 When the original needs only a single default target cell frequency point resources decision, and now we need all the frequencies of the target cell

上的资源进行接纳尝试;在多载频系统中,不论切换用户切换到哪一个目标载波,其系统中的公共信息比如引导信道(Beacon channel)信息等必须在指定的主载波上获取,而单载频系统中在选定小区后,就已知所使用的频点了。 Resources is receiving attempt; in a multi-carrier system, regardless of the handover user switches to which a target carrier, the public information which the system such as the guide channel (Beacon channel) information must be available on the designated primary carrier, and a single after the carrier system is selected the cell, it is known that the frequencies used. 因此原有的切换算法和过程无法解决现有的问题,并且无法充分发挥现有系统资源较多的优势。 Therefore, the existing handover algorithms and the process can not resolve the existing problems, and can not give full play to the existing system more resources.

发明内容 SUMMARY

本发明的目的是解决现有技术中存在的上述问题,提出多频点系统中的切换控制方法。 Object of the present invention is to solve the aforementioned problems in the prior art, the proposed handover control method in a multi-frequency system.

根据本发明提供的一种多频点系统中的切换控制方法方案,包括步骤: 用户设备得到相关的测量配置参数,配置小区列表; 用户设备上报本小区和邻小区的测量结果; 无线网络控制器接收用户设备上报的测量结果; 无线网络控制器对用于切换的目标小区列表进行维护; According to a multi-frequency system of the present invention provides a handover control method in the scheme, comprising the steps of: a user equipment to get the relevant measurement configuration parameters, configuration cell list; user equipment to report the present cell and neighbor cell measurements; the radio network controller receiving a measurement result reported by the user equipment; radio network controller of the target cell list for handover for maintenance;

若用户设备收到来自无线网络控制器的切换命令,则接入该切换命令指示的目标主载波上并和目标主载波建立新的无线连接; If the user equipment receives the handover command from a radio network controller, the access on a target primary carrier and the handover command indicates a target primary carrier and establish a new wireless connection;

该用户设备向无线网络控制器发送切换完成消息,并停留在目标主载波上工作,随后调整到辅助载波上; The user equipment sends a handover complete message to the radio network controller, and work to stay on the target primary carrier, and then adjusted to a secondary carrier;

用户设备发送表明用户设备切换成功的反馈消息。 It indicates that the user equipment transmits a user equipment feedback handover success message.

其中在该目标主载波上建立专用信道的步骤包括:如果所述建立专用信道的时间过长或目标小区设备无法正常工作,该用户设备在指示的目标主载波上不能够建立新的无线连接,则该用户设备向无线网络控制器发送切换失败消息,同时该用户设备恢复原来的链路连接。 Wherein the step of establishing a dedicated channel on the target primary carrier comprising: if the time of the establishment of a dedicated channel is too long or the target cell device does not work, the user device can not establish a new wireless connection on the target primary carrier indicator, the user equipment sends a handover failure message to the radio network controller while the user equipment to restore the original link connection.

其中在该用户设备接入目标主载波上并和目标主载波建立新的无线连接的步骤包括以下歩骤:在选定的主载波上进行判决,如果确定该主载波可以接纳该用户设备,该用户设备接入该主载波;否则,检査目标小区列表中剩余的候选主载波的数目,若目标小区列表中的主载波都已经进行过对该用户设备的接纳判决,本次切换流程结束,用户设备仍然维持原有的无线链路;若目标小区列表中有剩余的候选主载波,则无线网络控制器从目标小区列表中选择出下一个优先级最高的主载波。 And wherein the target primary carrier and based on the user to access the target primary carrier new wireless connection step comprises the step ho: judgment performed on the selected primary carrier, if it is determined that the user may receive primary carrier device, which the user equipment access to the primary carrier; otherwise, check the number of candidate target primary carrier cell remaining in the list, if the target primary carrier cell list have been subjected to the decision of the receiving user equipment, this handover process ends, the user equipment remains the original wireless link; if there are remaining candidate cell list of the target primary carrier, the radio network controller to select the next highest priority from the target primary carrier cell list.

根据本发明提供的另一种多频点系统中的切换控制方法方案,包括步骤- According to another multi-frequency system of the present invention provides a handover control method in the scheme, comprising the steps of -

用户设备得到相关的测量配置参数,配置相邻小区列表; The user equipment to get relevant measurement configuration parameters, configure the neighbor cell list;

测量并上报本小区和邻小区的测量结果; Measurement and report the measurement result of the serving cell and neighbor cells;

无线网络控制器接收用户设备上报的测量结果; Radio network controller receives a measurement result reported by the user equipment;

无线网络控制器根据该上报的测量结果对用于切换的目标小区列表进行维护; 无线网络控制器判决是否可在目标逻辑小区接纳该用户设备,如果判决可以接纳,则向该用户设备发送切换命令; Radio network controller of the measurement result reported by the target cell list for handover of maintenance; decision whether the radio network controller may receive the logic cell in the target user equipment, if the decision can be accepted, the handover command to the user equipment, ;

若用户设备收到来自无线网络控制器的切换命令,则接入该切换命令指示的目标载波上并建立新的无线连接; If the user equipment receives the handover command from a radio network controller, the access and establish a new wireless connection to the target carrier handover command instruction;

切换完成,该用户设备发送切换成功的消息;否则恢复原来的链路连接。 The handover is completed, the user equipment sends a handover success message; otherwise, return to the original link connection. 所述的判决步骤包括以下步骤:判断该目标小区列表是否为空;若目标小区列表不为空,则从该目标小区列表中选择出优先级最高的目标逻辑小区;和在判决结果为该目标逻辑小区不能接纳时,检査目标小区列表中剩余的目标逻辑小区的数目;若在该目标小区列表中有目标逻辑小区可以接纳该用户设备,则从该目标小区列表中选择出下一个优先级最高的目标逻辑小区。 Said decision step comprises the steps of: determining whether the target cell list is empty; If the target cell list is not empty, selecting from the highest priority logical target cell list of the target cell; and a decision result for the target when receiving the logical cell can not check the number of remaining target cell list of the target cell logic; logical target cell if the user device may receive, from the target cell list to select a next priority list in the target cell highest object logic cell.

和现有技术相比,本发明充分考虑了多载频TDD/CDMA移动系统的特点,所设计的切换测量、判决、目标载扇的选择和切换的执行过程,都能保证使多载频TDD/CDMA移动系统具有的切换成功率和较低的系统掉话率,同时该切换方式对资源的预留更加灵活和高 And compared to the prior art, the present invention fully contemplates a multi-frequency TDD / CDMA mobile system characteristics, designed handover measurement, handover execution and selection decision, the target load sector, can ensure that the multi-frequency TDD / CDMA mobile system having a handover success rates and lower call drop rate system, while the switching mode of the reserved resources is more flexible and high

效,提高了整个系统的资源利用率。 Efficiency, improved resource utilization of the entire system.

附图说明 BRIEF DESCRIPTION

图1是根据本发明的第一实施例的用户设备UE侧的切换流程图。 FIG 1 is a flowchart of a user equipment UE handover side of the first embodiment of the present invention.

图2是根据本发明的第一实施例的无线网络控制器RNC侧的切换流程图。 FIG 2 is a flowchart of a radio network handover to the first embodiment of the present invention, controller RNC side.

图3是根据本发明的第二实施例的用户设备UE侧的切换流程图。 FIG 3 is a flowchart of a user equipment UE handover side of the second embodiment of the present invention.

图4是根据本发明的第二实施例的无线网络控制器RNC侧的切换流程图。 FIG 4 is a flowchart of a wireless switching network to the second embodiment of the present invention, controller RNC side.

6具体实施方式 6 DETAILED DESCRIPTION

切换控制(HC)是无线资源管理(RRM)中的一个重要组成部分。 Switching control (HC) is an important part of a radio resource management (RRM) in. 在移动通信系统中, 用户终端在最初的小区与网络实现连接之后,有可能由于各种原因需要使用新的小区的服务,多载频TDD/CDMA系统中的切换过程就是通过将用户终端的连接切换到其它合适的扇区的某个载频上,从而使得服务不会产生中断。 In a mobile communication system, the user terminal after the initial cell connected to networks, it is possible for various reasons requires new serving cell, the multi-frequency TDD / CDMA handover process in the system is connected by a user terminal other suitable handover to a sector of the carrier frequency, so that the service will not generate an interrupt.

下面具体描述多载频TDD/CDMA系统中切换的详细过程和实现流程。 The following detailed description of the detailed process multi-frequency TDD / CDMA system and handover implementation process.

在多载频TDD/CDMA系统中,由于辅助载波上没有引导信道,因此UE无法直接获取辅助载波的强度信息,所以必须采用各个扇区内的主载波的导频强度作为切换的判决依据。 In multi-carrier TDD / CDMA system, since there is no pilot channel on the secondary carrier, the UE can not obtain the intensity information directly to the auxiliary carrier, the carrier must be used within each of the primary sector pilot strength as the basis for the decision to switch. 即此时所有关于导频强度的测量都要基于各个扇区内的主载波上的引导信道进行,这包括本小区内导频强度的测量以及邻小区内导频强度的测量。 I.e., when all the measurements on the pilot strength must be based on the primary pilot channel in the carrier for each sector, which includes measuring the pilot strength of the present cell and the neighbor cell pilot strength.

本文中的术语"逻辑小区"均指共用公共信道的多频点TDD/CDMA系统中的一个扇区, 该逻辑小区包含多个载波,其中一个为主载波,其余为辅助载波。 Herein, the term "logic cells" refer to share a common frequency channel of a multi-sector TDD / CDMA system, the logic cell comprising a plurality of carriers, wherein a primary carrier, the secondary carrier as the remainder.

按照UE切换过程的不同,多载频TDD/CDMA系统中的切换有两种可选方案:一,UE 首先切换到目标小区(逻辑小区)的主载频上,随后可通过小区(逻辑小区)内的信道调整转换到辅助载频上;二, UE直接切换到相应的载频上。 According to different UE handover procedure, switching the multi-frequency TDD / CDMA system, there are two options: First, the target UE is first switched to the main cell (logic cell) carrier frequency, followed by a cell (logic cell) channel adjustment within the secondary carrier to the frequency conversion; two, UE handover directly to the appropriate carrier frequency. 下面分别对这两种方案进行详细描述。 Below these two schemes are described in detail.

本发明的第一切换方案是UE首先切换到主载频,再转移到辅助载波。 A first switching scheme of the present invention is that the UE is first switched to the main carrier frequency, and then transferred to a secondary carrier. 该方案的过程是:切换时UE以各个扇区内的主载波为目标载波进行测量和切换,UE切换到目标小区(逻辑小区)主载波上后,由信道调整算法按照一定的策略将其转移到相应的辅助载波上去。 During this program are: UE to primary carrier within each sector is switching target carrier measurements and handover, the UE switches to the target cell (logic cell) after the primary carrier, to adjust the channel algorithm according to a certain strategy transferred up to respective supplementary carrier. 当用户切换到某一扇区的主载波上后,本次切换请求和过程就结束了,主载波上的用户向辅助载波的调整过程由信道调整算法完成。 When the user switches to a sector on the primary carrier, and this handover request process is over, the user's primary carrier is adjusted by the channel to the secondary carrier adjustment algorithm is complete.

本方案可以采用预留资源的切换流程,但必须在主载波上预留资源,在辅助载波上可以不预留资源,这是因为切换时UE只会切换到各个逻辑小区的主载波上。 This embodiment may be employed to reserve resources of the handover procedure, but it must reserve resources on the primary carrier, the secondary carrier may not be the reserved resources, as the UE will switch to the primary carrier of each logic cell handover.

下面参照图1和2具体说明根据本发明的第一切换方案的多频点系统中切换控制的详细过程。 The detailed process of the switching control system of the first multi-frequency switch in embodiment 2 of the present invention and the following detailed description with reference to FIG. 1. 图1是用户设备UE侧的切换流程。 FIG 1 is a handover procedure of the user equipment UE side. 图2是无线网络控制器RNC侧的切换流程图。 FIG 2 is a flowchart showing the switching of the radio network controller RNC side.

从图1可看出,UE侧的切换流程包括与切换相关的测量和切换执行过程。 As can be seen from Figure 1, the handover procedure and the UE side comprises a measurement execution switch associated with the switch.

在步骤101, UE得到相关的测量配置参数(如测量对象、测量上报格式等)后,配置测量类型(比如频内测量或频间测量)、测量小区列表、测量上报格式(如周期触发或事件触发)和测量量等。 After step 101, UE gets relevant measurement configuration parameters (such as the measurement object, measurement reporting format, etc.), configuring the measurement type (such as measuring the frequency or inter-frequency measurement), the measurement cell list, measurement reporting formats (e.g., periodic trigger or event trigger) and measure the amount. 在步骤102, UE对本小区(逻辑小区)和邻小区(逻辑小区)进行相关测量,包括以各个小区(逻辑小区)的主载波上的引导信道为测量目标的导频强度的测量; In step 102, UE of the cell (logic cell) and the adjacent cell (logic cell) related measurements, including measurements on the pilot channel to each cell (logic cell) for the measurement of target primary carrier pilot strength;

在步骤103,当满足相应的条件如周期触发或事件触发条件时,UE上报测量结果,完成了与切换相关的测量过程; In step 103, when the appropriate conditions are met, such as periodic triggering event or trigger condition, the UE reports the measurement results, the measurement process related to the completion of the handover;

在步骤104, UE若收到来自RNC的切换命令,进行步骤105,否则返回步骤102; In step 104, UE when receiving the handover command from the RNC, step 105, otherwise the process returns to step 102;

在步骤105,在切换命令指示的主载波上进行接入:如果UE没有关于该主载波的同步和功率控制信息,则UE需要通过在上行方向发送UpPCH和主载波进行同步和功率控制; 如果UE已经事先获取同步和功率控制参数,直接进行下一步; In step 105, an access on the primary carrier switch command indicative of: if the UE is not synchronized and power control information on the primary carrier, the UE needs to transmit through the primary carrier and UpPCH synchronization and power control in the uplink direction; if the UE It has been previously acquired synchronization and power control parameters for the next step;

在步骤106,和目标主载波建立新的无线连接,即UE在目标主载波上建立专用信道(DCH); Establish a new wireless connection in step 106, and the target primary carrier, i.e., the UE establishes a dedicated channel (DCH) on the target primary carrier;

在步骤107,若UE和目标主载波成功建立新的无线连接,该UE应向RNC发送切换完成消息(如物理信道重配置完成消息等);同时,该UE停留在主载波上进行工作,随后由信道调整算法将其调整到辅助载波上去,完成了切换执行过程。 In step 107, if the UE and the target primary carrier successfully established a new wireless connection, the UE shall RNC sends a handover complete message (e.g., a physical channel reconfiguration complete message, etc.); at the same time, the UE stays in the primary carrier work, then adjustment algorithm by the channel to be adjusted up secondary carrier to complete the handover procedure performed. 否则进入步骤108; Otherwise, proceed to Step 108;

在步骤108,如果由于建立DCH的时间过长或目标逻辑小区设备无法正常工作等异常原因,UE在指示的主载波上没有能够建立新的无线连接,则该UE应向RNC发送切换失败消息(如物理信道重配置失败消息等),同时该UE恢复原来的链路连接。 In step 108, if the DCH setup time since the cause of abnormality is too long or the target logical device is not working like a normal cell, the UE indicates the primary carrier is not able to establish a new wireless connection, the UE shall send a handover failure message to RNC ( the physical channel reconfiguration failure message and the like), while the UE to restore the original link connection.

在步骤201, RNC得到UE上报的测量结果; In step 201, RNC measurement results reported by the UE;

在步骤202,对用于切换的目标小区(逻辑小区)列表进行维护,加入或删除某些小区(逻辑小区),需要说明的是,由于UE只在各个逻辑小区的主载波上进行切换接入,该小区列表实际上表示的是按照优先级进行排列的各个候选目标逻辑小区的主载波; In step 202, the target cell for handover (logic cell) list is maintained, addition or removal of certain cells (logic cells), should be noted that, since the UE only on the primary carrier of each logic cell handover access the cell list is actually represented by each candidate target primary carrier according to the logic cells arranged in priority levels;

在步骤203,若目标小区列表不为空,进行下一步,否则本次切换流程结束,UE仍然维持原有的无线链路; In step 203, if the target cell list is not empty, the next step, otherwise, the switching process ends, the UE remains the original wireless link;

在步骤204, RNC从目标小区列表中选择出优先级最高的逻辑小区,也即选择出优先级最高的主载波; In step 204, RNC selecting the target cell from the list of highest priority logical cell, i.e., the highest priority is selected primary carrier;

在步骤205,在选定的主载波上对该用户进行接纳判决,接纳判决的主要目的是检査该主载波是否有能力为该用户提供服务:如果确定主载波可以为该用户提供服务,则判决该用户可以接入;否则拒绝该用户的接入; In step 205, on the selected master carrier receiving the user decision, the main purpose is to check to receive the judgment of the primary carrier's ability to provide services for the user: if it is determined primary carrier may serve the user, ruled that the user can access; otherwise, the user is denied access;

在步骤206,检査接纳判决结果,如果该用户能够在选定的主载波上进行接入,则进行步骤209,否则进行步骤207; In step 206, the judgment result of the receiving check, if the user can access on the selected primary carrier, proceeds to step 209, otherwise proceeds to step 207;

在步骤207,检查目标小区列表中剩余的候选主载波的数目,若目标小区列表中的主载波都已经进行过对该用户的接纳判决,本次切换流程结束,UE仍然维持原有的无线链路,否则进行步骤208; In step 207 the number of check target cell candidates remaining in the list of primary carrier, when the primary carrier in the target cell list have been subjected to the decision of the receiving user, this handover process ends, the UE still maintain the original radio link road, otherwise proceeds to step 208;

在步骤208, RNC从目标小区列表中选择出下一个优先级最高的主载波后,本次切换流程将进行步骤205; After step 208, RNC selects the next highest priority from the target primary carrier cell list, this handover process proceed to step 205;

在步骤209, RNC发出切换命令,如物理信道重配置消息、传输信道重配置消息或无 In step 209, RNC issues a handover command, such as a physical channel reconfiguration message, a transport channel reconfiguration message, or no

线承载重配置消息等; Radio bearer reconfiguration message, and the like;

在步骤210, RNC发出切换命令后,收到来自UE的相应的反馈消息,如果该消息表明UE切换成功,则进行步骤211,否则进行步骤212; After step 210, RNC issues a handover command received from the UE corresponding feedback message, if the message indicates successful handover UE proceeds to step 211, otherwise proceeds to step 212;

在步骤211, RNC删除该用户的原链路配置信息,本次切换流程结束,UE和新的主载波保持连接; In step 211, RNC deletes the original user link configuration information, this handover process ends, the UE and the new primary carrier remain connected;

在步骤212, UE恢复原来的链路连接,RNC删除在新的目标主载波上建立的对该用户的无线连接,随后,本次切换流程结束,UE维持原有的无线连接。 In step 212, UE restore the original link connection, a wireless connection to the user to delete the RNC established on the new target primary carrier, then this handover process ends, the UE maintain the original wireless connection.

本发明的第二切换方案是UE直接切换到目标载波。 The second embodiment of the present invention is a handover UE is handed directly to the target carrier. 该方案的策略是:在切换的过程中,UE收到切换命令后直接切换到目标小区(逻辑小区)的相应载波(辅助载波或主载波)上,并最终驻留在该载波上。 Policy of the program is: During handover, the UE receives the handover command directly after switching to a target cell (logic cell) corresponding to the carrier (primary carrier or secondary carrier), and finally residing on the carrier. 在本方案中,在发出切换命令的同时,RNC应通知UE 目标小区(逻辑小区)的主载波信息,以便于UE在后继过程中完成一些必需的任务,如读取系统消息、进行导频强度测量等。 In the present embodiment, simultaneously as the switch command, the RNC notifies the UE should target cell (logic cell) is the primary carrier of information, so the UE is completed in the subsequent process of some essential tasks, such as reading the system message, the pilot strength measurement.

本方案同样可以采用资源预留的切换流程,但是在各个载波(包括主载波和辅助载波) 上都必须预留资源,这是因为此时UE可能切换到主载波上,也可能切换到各个辅助载波上。 The program may also be employed handover resource reservation process, but on the respective carrier (including primary carrier and secondary carrier) must reserve resources, this is because the UE may switch to the primary carrier, also possible to switch to the respective auxiliary carrier on.

下面参照图3和4具体说明根据本发明的第二切换方案的多频点系统中切换控制的详细过程。 Detailed handover process control system according to a second multi-frequency switching scheme of the present invention 3 and 4 specifically described below with reference to FIG. 图3是用户设备UE侧的切换流程图。 FIG 3 is a flowchart showing handover of the user equipment UE side. 图4是无线网络控制器RNC侧的切换流程图。 FIG 4 is a flowchart showing the switching of the radio network controller RNC side.

从图3可看出,该用户设备UE侧的切换流程包括与切换相关的测量和切换执行过程。 As can be seen from Figure 3, the handover procedure of the user equipment UE side comprises a measurement and handover execution associated with handover. 在步骤301, UE得到相关的测量配置参数(测量对象、测量上报格式等)后,配置测 After step 301, UE measurement configuration parameters to obtain the relevant (measurement object, measurement reporting format, etc.), measurement configuration

量类型(比如频内测量或频间测量)、测量小区列表、测量上报格式(如周期触发或事件 The amount of type (such as intra-frequency measurements or inter-frequency measurement), the measurement cell list, measurement reporting formats (e.g., periodic or event triggers

触发)和测量量等; Trigger) measurements and the like;

在步骤302, UE对本小区(逻辑小区)和邻小区(逻辑小区)进行相关测量,这包括以各个小区(逻辑小区)的主载波上的引导信道为测量目标的导频强度的测量; In step 302, UE of the cell (logic cell) and the adjacent cell (logic cell) related measurements, including measurements to pilot channel on each cell (logic cell) is the primary carrier of a measurement target pilot strength;

在步骤303,当满足相应的条件(周期触发或事件触发)时,UE上报测量结果,完成 In step 303, when the corresponding condition is satisfied (periodic triggering event or trigger), the UE reports the measurement result, complete

9了与切换相关的测量过程; 9 relating to the handover measurement process;

在步骤304, UE若收到来自RNC的切换命令,如物理信道重配置消息、传输信道重配置消息或无线承载重配置消息等,进行步骤305,否则返回步骤302; In step 304, UE when receiving the handover command from the RNC, the physical channel reconfiguration message, a transport channel reconfiguration message or a radio bearer reconfiguration message, etc., to step 305, otherwise the process returns to step 302;

在步骤305,在切换命令中指示的目标载波(辅助载波或主载波)进行接入:如果UE 没有关于目标载波的同步和功率控制信息,则UE需要通过在上行方向发送UpPCH和目标逻辑小区的主载波进行同步和功率控制;如果UE已经事先获取同步和功率控制参数,直接进行下一步; In step 305, the target carrier indicator in the handover command (primary carrier or secondary carrier) for the access: if the UE is not synchronized on the target carrier and power control information, the UE and the target by transmitting a UpPCH logic cell in the uplink direction primary carrier synchronization and power control; if the UE has been previously acquired synchronization and power control parameters for the next step;

在步骤306,和目标载波(辅助载波或主载波)建立新的无线连接,即UE在目标载波上建立DCH; In step 306, the target and carrier (primary carrier or secondary carrier) to establish a new wireless connection, i.e. establishment of DCH UE on the target carrier;

在步骤307,若UE和目标载波成功建立新的无线连接,该UE向RNC发送切换完成消息,如物理信道重配置完成消息等,同时驻留在该载波上工作,完成了切换执行过程。 Completion of step 307, if the UE and target carrier new wireless connection is successfully established, the UE sends a handover message to the RNC, such as a physical channel reconfiguration complete message, etc., while working on the carrier resides, it completed the process of handover execution. 否则进入步骤308; Otherwise, proceed to step 308;

在步骤308,如果由于建立DCH的时间过长或目标逻辑小区设备无法正常工作等异常原因,UE在指示的目标载波上没有能够建立新的无线连接,则该UE应向RNC发送切换失败消息,如物理信道重配置失败消息等,同时该UE恢复原来的链路连接。 In step 308, if the DCH setup time since the cause of abnormality is too long or the target cell logic device is not working properly, etc., on the target UE is not capable of indicating the carrier to establish a new wireless connection, the UE should handover failure message sent by the RNC, the physical channel reconfiguration failure message and the like, while the UE to restore the original link connection.

在一个逻辑小区中,只有主载波上有共用控制信道,因此UE与目标载波(辅助载波或主载波)的同步应通过UE与相应主载波的同步来完成,该过程可以在UE收到切换命令之前完成,也可以在收到切换命令之后完成。 In one logical cell, there is a common control channel only on the primary carrier, the UE should be synchronized to complete synchronization with the target carrier (primary carrier or secondary carrier) and by a corresponding UE primary carrier, the process may receive UE in the handover command done before, it can also be done after receiving the handover command. 前者需要与多个目标逻辑小区的主载波建立和保持同步,这样可以縮短切换过程所需要的时间;后者在收到切换命令后只与切换命令中指示的目标逻辑小区中的主载波建立同步,然后'UE再转移到相应的载波上工作。 The former needs to establish a plurality of target primary carrier and sync logic cells, which can shorten the time required for the handover process; the latter only with the target primary carrier switch command logic cell indicated by the handover command after receiving the synchronization is established and 'UE then transferred to the corresponding work on a carrier.

在步骤401, RNC得到UE上报的测量结果; In step 401, RNC measurement results reported by the UE;

在步骤402,对用于切换的目标小区(逻辑小区)列表进行维护,加入或删除某些小区(即逻辑小区,包含主载波和辅助载波); In step 402, the target cell for handover (logic cell) list is maintained, addition or removal of certain cells (i.e. logic cell, comprising a primary carrier and secondary carrier);

在步骤403,判断该目标小区列表是否为空,若目标小区列表不为空,进入步骤404, 否则本次切换流程结束,UE维持原有的无线链路; In step 403, the target cell is determined whether the list is empty, if the target cell list is not empty, it proceeds to step 404, otherwise, the switching process ends, the UE maintain the original wireless link;

在步骤404, RNC从目标小区列表中选择出优先级最高的逻辑小区; In step 404, RNC selects the highest priority logical cell list from the target cell;

在步骤405,在选定的目标逻辑小区(包含主载波和辅助载波)内对该用户进行接纳判决,在判决时,应把一个逻辑小区中的多个载波(包括主载波和辅助载波)作为统一的资源对用户进行分析,如可以根据每个载波上的业务量的大小动态调整每个载波优先级的方法进行接纳判决,以保证逻辑小区内的业务均衡的分布在各个载波上,从而提高整个逻 In step 405, the selected target cell of the user receiving the logical decision (comprising primary carrier and secondary carrier), the judgment at the time, a plurality of carriers should be a logical cell (including primary carrier and secondary carrier) as uniform resource the user analysis, as can be dynamically adjusted for each carrier receiving the decision process priority traffic on each carrier according to the size, in order to ensure the service logic cell balance distributed among the carriers, thereby improving the entire logic

10辑小区的接纳能力; Series 10 cell receiving capability;

在步骤406,检查接纳判决结果,若该用户能够在该逻辑小区进行接入,进行步骤409, 否则进行步骤407; Receiving the decision result in step 406, check if the user can access the logical cell, step 409, otherwise it proceeds to step 407;

在步骤407,检査目标小区列表中剩余的目标逻辑小区的数目,若该用户在目标小区列表中的所有逻辑小区内都已经进行过接纳判决,本次切换流程结束,UE维持原有的无线链路,否则进行步骤408; In step 407 the number of check target cell list of the remaining target logical cell, all the logic cells in the target cell if the user list have already been receiving the decision, this handover process ends, the UE maintain the original radio link, otherwise proceeds to step 408;

在步骤408,从目标小区列表中选择出下一个优先级最高的逻辑小区,下一步转入步骤线 In step 408, the target cell selected from a list showing the next highest priority logical cell, the step proceeds to the next line

在步骤409, RNC发出切换命令,如物理信道重配置消息、传输信道重配置消息或无线承载重配置消息等,该命令应包含目标载波信息和相应主载波信息; In step 409, RNC issues a handover command, such as a physical channel reconfiguration message, a transport channel reconfiguration message or a radio bearer reconfiguration message, etc., the command should include information and the target carrier information corresponding to the primary carrier;

在步骤410, RNC发出切换命令后,会收到来自UE的反馈消息,如果该消息表明UE 切换成功,进行步骤411,否则转入步骤412; After step 410, RNC issues a handover command, may receive a feedback message from the UE, if the UE message indicates successful handover, proceeds to step 411, otherwise proceeds to step 412;

在步骤411, RNC删除该用户的原链路配置信息,本次切换流程结束,UE和新的载波(某一辅助载波或主载波)保持连接; In step 411, RNC link delete original configuration information of the user, this handover process ends, the UE and the new carrier (primary carrier or a secondary carrier) remain connected;

在步骤412, UE恢复原来的链路连接,RNC删除在目标载波(某一辅助载波或主载波) 上建立的对该用户的无线连接,随后,本次切换流程结束,UE保持原有的无线链路。 In step 412, UE restore the original link connection, the RNC delete the wireless connection to the user established in the target carrier (primary carrier or a secondary carrier) on, then this handover process ends, the UE maintain the original radio link.

虽然以上通过实施例叙述了本发明,但是,这些具体实施例不是用来对本发明的保护范围加以限制,本发明的范围不应当只限制于这些具体的例子,而是可以覆盖各种变型及其等同或等效的方案。 Although the foregoing invention has been described by way of examples, however, these specific examples are not intended to limit the scope of the invention, the scope of the invention should not be limited only to these specific examples, but may cover various modifications and equal or equivalent program.

11 11

Claims (8)

1. 一种多频点系统中的切换控制方法,包括步骤:用户设备得到相关的测量配置参数,配置小区列表;用户设备上报本小区和邻小区的测量结果;无线网络控制器接收用户设备上报的测量结果;无线网络控制器对用于切换的目标小区列表进行维护;若用户设备收到来自无线网络控制器的切换命令,则接入该切换命令指示的目标主载波上并和目标主载波建立新的无线连接;该用户设备向无线网络控制器发送切换完成消息,并停留在目标主载波上工作,随后调整到辅助载波上;用户设备发送表明用户设备切换成功的反馈消息。 1. A handover control method of multi-frequency system, comprising the steps of: a user equipment to get the relevant measurement configuration parameters, configuration cell list; user equipment reports the measurement result of the serving cell and neighbor cells; radio network controller receives the user equipment reports measurements; radio network controller of the target cell list for handover for maintenance; if the user equipment receives the handover command from a radio network controller, the access on a target primary carrier and the handover command indicates a target primary carrier and establish a new wireless connection; the user equipment to the radio network controller transmits the handover complete message, and stay on the target primary carrier work, and then adjusted to a secondary carrier; user equipment transmits a user equipment feedback messages indicate successful handover.
2. 根据权利要求1的切换控制方法,其中和目标主载波建立新的无线连接的步骤包括该用户设备在该目标主载波上建立专用信道的步骤。 The handover control method as claimed in claim 1, wherein the target primary carrier and establish a new wireless connection step comprises the step of the user equipment establishes a dedicated channel on the target primary carrier.
3. 根据权利要求2的切换控制方法,其中在该目标主载波上建立专用信道的步骤包括:如果所述建立专用信道的时间过长或目标小区设备无法正常工作,该用户设备在指示的目标主载波上不能够建立新的无线连接,则该用户设备向无线网络控制器发送切换失败消息,同时该用户设备恢复原来的链路连接。 The handover control method as claimed in claim 2, wherein the step of establishing a dedicated channel on the target primary carrier comprising: if the time is too long to establish a dedicated channel or a target cell device does not work, the target device indicated by the user not able to establish a new wireless connection on the primary carrier, the user equipment sends a handover failure message to the radio network controller while the user equipment to restore the original link connection.
4. 根据权利要求1至3的任一个权利要求的切换控制方法,其中在该用户设备接入目标主载波上并和目标主载波建立新的无线连接的歩骤包括以下步骤:在选定的主载波上进行判决,如果确定该主载波可以接纳该用户设备,该用户设备接入该主载波;否则,检査目标小区列表中剩余的候选主载波的数目,若目标小区列表中的主载波都已经进行过对该用户设备的接纳判决,本次切换流程结束,用户设备仍然维持原有的无线链路;若目标小区列表中有剩余的候选主载波,则无线网络控制器从目标小区列表中选择出下一个优先级最高的主载波。 The handover control method as claimed in any one of claims 1 to 3, wherein the target primary carrier and establish a new wireless connection ho on the user to access the target primary carrier step comprises the steps of: Selected on the primary carrier for the decision, if it is determined that the user may receive primary carrier equipment, the user equipment access to the primary carrier; otherwise, check the number of candidate target primary carrier cell remaining in the list, if the main carrier in the target cell list have already been receiving the decision to the user equipment, this handover process ends, the user equipment remains the original wireless link; if there are remaining candidate cell list of the target primary carrier, the radio network controller from a list of the target cell select the next highest priority primary carrier.
5. 根据权利要求1至3的任一个权利要求的切换控制方法,其中: 在用户设备收到来自无线网络控制器的切换命令之前,还包括步骤-无线网络控制器检查该目标小区列表是否为空;如果该目标小区列表为空,则本次切换流程结束,用户设备仍然维持原有的无线链路; 如果该目标小区列表不为空,则无线网络控制器从目标小区列表中选择优先级最高的主载波。 The handover control method according to any preceding claim in claim 3, wherein: before the user equipment receives the handover command from the radio network controller, further comprising the step of - radio network controller checks whether the list of the target cell empty; target cell if the list is empty, then this handover process ends, the user equipment remains the original wireless link; if the target cell list is not empty, the radio network controller from the target cell selection priority list the highest primary carrier.
6. —种多频点系统中的切换控制方法,包括步骤: 用户设备得到相关的测量配置参数,配置相邻小区列表; 测量并上报本小区和邻小区的测量结果;无线网络控制器接收用户设备上报的测量结果;无线网络控制器根据该上报的测量结果对用于切换的目标小区列表进行维护;无线网络控制器判决是否可在目标逻辑小区接纳该用户设备,如果判决可以接纳,则向该用户设备发送切换命令;若用户设备收到来自无线网络控制器的切换命令,则接入该切换命令指示的目标载波上并建立新的无线连接;切换完成,该用户设备发送切换成功的消息;否则恢复原来的链路连接。 6. - multiband switching points in the system control method, comprising the steps of: a user equipment to get the relevant measurement configuration parameters, configure the neighbor cell list; measurement and report the measurement result of the present cell and the neighbor cells; radio network controller receives user measurement results reported by the device; radio network controller of the measurement result reported by the target cell list for handover of maintenance; decision whether the radio network controller the user equipment may receive a logical target cell, if the decision can be accepted, then the the user equipment sends a handover command; if the user equipment receives the handover command from the radio network controller, the access to the handover command indicates that the target carrier and establish a new wireless connection; handover is completed, the user equipment sends a handover success message ; otherwise restore the original link connection.
7. 根据权利要求6的切换控制方法,其中:所述的判决步骤包括以下步骤:判断该目标小区列表是否为空;若目标小区列表不为空,则从该目标小区列表中选择出优先级最高的目标逻辑小区;在判决结果为该目标逻辑小区不能接纳时,检査目标小区列表中剩余的目标逻辑小区的数目;若在该目标小区列表中仍有目标逻辑小区,则从该目标小区列表中选择出下一个优先级最高的目标逻辑小区对该用户设备进行接纳判决。 7. The handover control method according to claim 6, wherein: said decision step comprises the steps of: determining whether the target cell list is empty; If the target cell list is not empty, selected from the priority list of the target cell the highest target logical cell; when the decision result in the target cell is not receiving logic that check the number of remaining target cell list of the target cell logic; if there is still a logical target cells in the target cell list from the target cell the list is selected the next highest priority cell for receiving a target logical decision to the user equipment.
8. 根据权利要求6或7的切换控制方法,其中:所述测量并上报本小区和邻小区的测量结果的步骤包括各个目标逻辑小区的主载波的导频强度的测量。 8. A handover control method according to claim 6 or claim 7, wherein: the step of measuring the intensity of said measurement and report the measurement result of the serving cell and neighbor cells of each primary carrier comprises the target logical cell pilot.
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