CN100382647C - Method for converting types from public channel to dedicated channel in CDMA system - Google Patents

Method for converting types from public channel to dedicated channel in CDMA system Download PDF

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CN100382647C
CN100382647C CN 200410081181 CN200410081181A CN100382647C CN 100382647 C CN100382647 C CN 100382647C CN 200410081181 CN200410081181 CN 200410081181 CN 200410081181 A CN200410081181 A CN 200410081181A CN 100382647 C CN100382647 C CN 100382647C
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channel
system
user
common channel
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CN1761356A (en
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史莉荣
窦建武
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中兴通讯股份有限公司
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Abstract

本发明公开一种码分多址系统中公其信道向专用信道的类型转换方法,它包括如下步骤:系统上电运行,设置计数器的计数门限值、用户接收和发送缓存区容量的门限值、公共信道接收和发送缓存区容量的门限值;系统将用户业务建立在公共信道上,同时控制面要求基站进行小区负荷测量,而用户面、UE均分别进行用户接收或发送缓存区容量的测量;若用户接收或发送缓存区的容量大于其门限值,则上报控制面,并启动计数器加1,当计数器累计值大于其门限,且有小区负荷不过载及系统可提供合适的小区资源,则进行公共信道向专用信道的类型转换。 Known in which the channel of the present invention discloses a CDMA system to a dedicated channel type conversion method, comprising the steps of: a counting operation of the system power threshold, the counter is set, the user capacity of the receive and transmit buffer threshold common channel transmission and reception buffer capacity threshold; user traffic will be established on a common channel, while the control plane in claim load measurement cell base station, and the user plane, respectively, both the UE buffer capacity of the user is received or sent measured; if the user receives or sends large cache area thereon threshold value, the reporting control plane, and the start counter is incremented when the counter accumulated value is larger than the threshold, and there is a cell load is not overloaded and the system may provide appropriate cell resources , the type of common channel to dedicated channel conversion. 本方法充分考虑到CDMA系统中信道切换的具体情况,真正有效地节省系统资源,提高CDMA系统的容量。 This method fully account of the specific case of a CDMA system, the channel switching, truly effective conserve system resources, increase the capacity of the CDMA system.

Description

一种码分多址系统中公共信道向专用信道的类型转换方法技术领域本发明涉及一种石马分多址(Code Division Multiple Access,以下简称CDMA)系统不同通信信道之间的类型转换方法,特别是针对多个用户共享的公共信道,到单个用户专用信道的类型转换方法。 One kind of CDMA system, the common channel to the dedicated channel Field type conversion process of the present invention relates to a Shima division multiple access (Code Division Multiple Access, hereinafter referred to as CDMA) type conversion between different communication channel system, especially for a plurality of users share a common channel, a channel dedicated to a single user type conversion. 背景技术随着移动通信的发展,越来越多的业务正逐步得到应用,不仅包括传统的电路交换(Circuit Switched,以下简称CS )连接方式下的话音业务,还包括分组交换(Packet Switched ,以下简称PS )连接方式下的数据业务。 BACKGROUND With the development of mobile communication, more and more business is gradually applied, including not only the traditional circuit-switched (Circuit Switched, hereinafter referred to as CS) voice service the connection, further comprising a packet switched (Packet Switched, hereinafter referred to as PS) data service the connection. 尤其是分组数据业务与网络紧密的结合,提供给人们非常广泛的应用:视频电话、流媒体、文件下载、视频点播、收发邮件等等。 In particular packet data services tightly integrated with the network, provide people with a very wide range of applications: video telephony, streaming media, file downloads, video on demand, e-mail and so on. 但是这些分组数据应用的特性差异很大,除了视频会议和在线点播等流媒体是持续传输的以外,网络游戏、在线浏览、文件下载等都具有突发的特性。 But these differences in the characteristics of a large packet data applications, in addition to video conferencing and online on-demand streaming media is constantly transmitted, online games, online browsing, file downloading and so has unexpected properties. 发送的分组突发被散布开,带有其中不发送分组的时段,这样,分组的"密度"在短的时间间隔内是高的,但是对于长的时段来说,常常就是低的。 Packet transmitted burst is spread out, with a period in which no packet is transmitted, this packet "density" in a short time interval is high, but for a long period of time, it is often low. 由于数据业务的这种突发性,网络上也采取了一些措施,例如现在网络上经常使用的传输控制协议(TCP)。 Because of this sudden data services, the network also taken some measures, such as transmission control protocol on the network now commonly used (TCP). 从无线通信性能的角度看,TCP最大的特征就是流量控制,它采用拥塞窗口和供给窗口实现流量控制。 From the perspective of the wireless communication performance standpoint, the greatest feature is that TCP flow control, which uses the congestion window and supply the window to achieve flow control. 发送的数据量取决于对拥塞程度的监测,如果TCP发觉有包丟失,那么就减小发送速率,然后又慢慢地增大逐渐提高吞吐量。 Monitoring the amount of data transmitted depends on the degree of congestion, if found to have TCP packet loss, the sending rate is reduced and then gradually increased to gradually increase the throughput. 然而,这种拥塞响应机制会影响到无线网络的吞吐量。 However, the congestion response mechanism may affect the throughput of the wireless network. 因此,移动通信系统必须从自身出发,满足各种业务需求。 Therefore, the mobile communication system must proceed from their own, to meet a variety of business needs. 但是,同时 However, at the same time

带宽又是有限的,采用不同类型的无线信道可以有效地利用带宽,并且提供不同类型的业务应用。 The bandwidth is limited, wireless channels may use different types of efficient use of bandwidth, and to provide different types of business applications. 在通信系统中,有两种类型的信道,一种是乌单个用户对应的夸用信道, 另一种是多个用户共享的公共信道。 In a communication system, there are two types of channels, one is black with a single user channel corresponding to boast, the other is a plurality of users share a common channel. 专用业务信道可以保持信息实体间的实时关系,并且提供高的数据吞吐量。 Dedicated traffic channel may be maintained in real time relation between information entities, and provides a high data throughput. 而公共信道以相对较低的数据吞吐量传递信息分组。 And the common channels to relatively low data transfer throughput of information packets. 因此,当所请求的业务质量相对较高时,例如话音或对同步的通信,软切换或更软切换,适合使用专用信道来处理;当所请求的业务质量相对较低时,如电子邮件、短消息,或少量的数据传输,公共信道很适合处理。 Thus, when the requested quality of service is relatively high, e.g. speech or synchronized communication, soft handover or softer handover, suitable for using a dedicated channel to handle; when a relatively low requested quality of service, such as email, short message or a small amount of data transmission, the common channel is suitable for processing. 在第三代CDMA系统中,专用信道与公共信道的突出差别还在于对于功率资源和码资源的使用上。 In third generation CDMA systems, to emphasize the difference dedicated channel and the common channel is further characterized by the power resources and code resources for use. 在下行,使用正交码来区分不同的用户,每条专用信道使用一个码字,容量越高,需要的码字也越多;而公共信道上的分组数据只共享一个码字。 In the downlink, the orthogonal code used to distinguish between different users, each dedicated channel uses a code word, the higher the capacity, the codeword need the more; common channel packet data and share only one code word. 并且,专用信道使用快速闭环功率控制来适应环境和移动性,确保较低的误比特率和通信质量,如果传输速率越高,需要的发射功率越高;公共信道使用不太精确的开环功率控制,不适合发送大量的数据。 Further, the dedicated channel using a fast closed loop power control and mobility to adapt to the environment, ensuring a low bit error rate and communication quality, if the transmission rate is, the higher the required transmit power; common channels use less accurate open loop power control, it is not suitable for transmitting large amounts of data. CDMA系统是一个具有软容量的系统,在下行是码资源受限,在上行是功率受限。 System is a CDMA system having a soft capacity in the downlink code resource is limited, in the uplink power is limited. 如果能在系统运行过程中,对支持用户连接的信道类型进行适当地改变,那么就可以动态地改变对资源的使用,提高系统的容量。 If so, the user is connected to the support channel type be appropriately changed during the system operation, it can be dynamically changed use of resources and improve the system capacity. 现有用于无线通信系统的信道切换方法如"基于公共信道负荷的、公共信道到专用信道的类型转换"(专利申请号:00816611.0,专利公开号: 1402946A,公开日:2003年3月12日)提供了一种根据检测到的公共信道的负荷或吞吐量,提供相应的数据量门限,基于要通过用户连接发送的当前数据量和数据量门限的比较,确定是否把用户连接从公共信道切换到专用信道的方法。 Conventional channel switching method for a wireless communication system, such as "based on common channel load, a common channel to dedicated channel cast" (patent number: 00816611.0, Patent Publication No: 1402946A, Publication Date: 2003, March 12) provides a basis of the detected common channel load or throughput, to provide the corresponding data amount threshold, based on the comparison of the current data amount and the data amount of the gate to be sent over the user limit is determined whether the user connection from the common channel to method dedicated channel. 但是,该方法仅仅考虑公共信道的负荷或吞吐量以及与用户相关的数据量,而没有考虑小区负荷、资源的供给能力等因素,而在CMDA系统中,当小区发生过栽,其中有一项措施就是降低分组业务的吞吐量,但切换到专用信道正是为了提高分组业务的吞吐量,这样不得不又切换回公共信道中,反复如此不l又增加了信令开销,而且还会容易造成分组数据的丢失。 However, this method is only to consider common channel load or throughput and the amount of data associated with the user, without considerations cell load, the supply capacity of the resource and the like, and in the CMDA system, when the cell occurred planted, which has a measure It is to reduce the throughput of packet services, but switching to a dedicated channel precisely in order to increase the throughput of packet services, so they had to switch back to the public channels, so do not l repeatedly added signaling overhead, but also likely to cause a packet the loss of data. 此外,如果系统提供的扩频因子(信道化码资源)不能满足与用户相关的数椐量传输速率的要水,那么即使迸行转換,也不能緩解与用户连接相矢的发送緩存区的负担,信道类型的转换也就失去了意义。 Furthermore, if the system provides the spreading factor (code channel resource) do not fullfil the amount of water noted in the number of transmission rate associated with the user, even if the conversion into line, can not alleviate the transmission buffer is connected to the user's phasor burden, channel type of conversion will be lost meaning. 因此,现有方法并没有充分考虑到CDMA系统中信道切换的具体情况, 从而无法做出正确地判断,使得信道切换后系统资源并不能得到合理地利用,甚至还可能出现增加信令开销,丢失分组数据等不良后果。 Thus, the conventional method does not adequately take into account the particular circumstances of channel switching of a CDMA system, which can not make the right determination, so that after the channel switching system resources and can not be properly utilized, and even increase the signaling overhead may appear lost packet data and other adverse consequences. 发明内容本发明所要解决的技术问题是提供一种码分多址系统中公共信道向专用信道的类型转换方法,该方法充分考虑到CDMA系统中信道切换的具体情况,正确地做出是否执行信道切换的判决,从而真正有效地节省系统资源, 提高CDMA系统的容量。 SUMMARY OF THE INVENTION The technical problem to be solved is to provide a CDMA type system, the common channel to dedicated channel conversion method, the method fully into account the specific case of a CDMA system, the channel switching, to correctly perform channel is made whether handover decision, which really effectively save system resources, increase the capacity of the CDMA system. 为了解决上述技术问题,本发明提供了一种码分多址系统中公共信道向专用信道的类型转换方法,包括如下步骤:(a)基站控制器系统上电运行,将计数器置为初始状态,并设置计数器的计数门限值、用户接收和发送緩存区容量的门限值、公共信道下行和上行緩存区容量的门限值;(b )基站控制器系统接受用户申请,并将用户业务建立在公共信道上, 同时控制面向基站、UE和用户面发送测量控制指令,要求基站进行小区负荷测量,而用户面进行用户接收緩存区容量和下行公共信道緩存区容量的测量,UE进行用户发送緩存区容量和上行公共信道緩存区容量的测量;(c) 判断步骤(b)中的测量结果是否满足上报条件,若满足条件则上报测量结果,执行步骤(d),否则返回步骤(b);其中,所述上报条件包括用户接收或发送緩存区的容量大于其相应的门限值;(d) To solve the above technical problem, the present invention provides a method of code division multiple access system, the type of conversion to a common channel dedicated channel, comprising the steps of: operating the power (a) system base station controller, setting the counter to an initial state, and set the count of the counter threshold value, the user capacity of the receive and transmit buffer threshold, a common channel downlink and uplink buffer capacity threshold; (b) a base station controller system accepts user applications, and user service establishment common channel, while controlling for the base station, the UE and the user plane sends measurement control commands, requires the base station for the cell load measurements, and the user plane for the user receiving buffer capacity and downstream measured common channel buffer capacity, the UE user transmission buffer area size and uplink measurements common channel buffer capacity; measurements (c) determining step (b), satisfies a report condition, if the condition is satisfied then reports the measurement result, performing step (D), otherwise step (b); wherein the condition comprises user report receiving buffer or transmission capacity greater than its respective threshold value; (d) 制面接收测量结果,并启动计数器加1,若计数器的累计值大于计数门限^直,则扭j亍步骤(e),否则返回步艰《(b);(e )控制面根据接收的测量结果和系统码资源的申请情况判断是否满足信道类型转换的条件,若满足,进行公共信道向专用信道的类型转换,否则,不进行公共信道向专用信道的类型转换,返回步骤(b);其中,信道类型转换的条件包括小区负荷不过载且系统可提供合适的小区资源。 Noodle receives the measurement result, and the start counter is incremented when the cumulative value of the counter is greater than the counting threshold ^ straight, j right foot step (e) is twisted, or returns to step difficult "(b); measuring a received (e) a control plane according to results and applications where code resources system determines whether the channel condition the type of conversion is satisfied, if yes, common channel type conversion to a dedicated channel, otherwise, not the common channel type conversion to the dedicated channel, returning to step (B); wherein channel type conversion conditions include a load cell is not overloaded and the system may provide appropriate cell resources. 进一步地,上述方法可具有以下特点:所述步骤(a)中还包括设置抖动标准的门限值;步骤(c)中上报条件还包括用户接收或发送緩存区的容量小于抖动标准的门限值,其中该抖动标准门限值均小于用户接收和发送緩存区容量的门限值。 Further, the above method may have the following feature: the step (a) further comprises a standard jitter threshold; step (c), further comprising a user receiving the report condition or transmission capacity is smaller than the jitter buffer threshold criteria value, wherein the jitter is less than the standard threshold value the threshold value the user to receive and send buffer capacity. 进一步地,上述方法可具有以下特点:所述步骤(d)进一步分为以下步骤(dl )判断用户接收或发送緩存区的容量是大于相应的门限值,还是小于抖动标准的门限值,若大于緩存区容量的门限值,则执行步骤(d2);若小于抖动标准的门限值,将计数器清零并返回步骤(b);(d2)判断计数器的累计值是否大于计数门限值,若大于,则执行步骤(e),否则计数器加1,返回步骤(b)。 Further, the above method may have the following feature: the step (d) is further divided into the following steps (DL) transmission capacity is determined or user receiving buffer is greater than the corresponding threshold value, or smaller than the standard threshold jitter, if the buffer capacity greater than the threshold, the step (d2); if jitter is smaller than the standard threshold value, the counter is cleared and returns to step (B); whether the integrated value (d2) determination counter is greater than a threshold count value, if so, then performing step (E), otherwise the counter is incremented by 1, returned to step (b). 进一步地,上述方法可具有以下特点:所述步骤(e)进一步分为以下步骤(el )判断小区负荷是否过载,若不过载,则执行步骤(e2),否则返回步骤(b);(e2)判断系统能否提供可用的码资源,若能,则执行步骤(e3),否则返回步骤(b);(e3 )判断系统提供可用码资源的传输速率是否大于公共信道的传输速率,若大于,则执行步骤(e5),否则执行步骤(e4);(e4 )判断公共信道下行或上行的緩存区容量已经超过相应的门限值, Further, the above method may have the following feature: the step (e) is further divided into the following steps (el) determining whether a cell overloading, if not overloaded, the step (E2), otherwise step (b); (e2 ) Analyzing system can provide a usable code resources, if, the step (E3), otherwise step (b); (e3) determining whether the system provides a transfer rate of the transmission rate is greater than the available code resources of the common channel, if greater than , the step (E5), otherwise step (e4); (e4) determining a common channel downlink or uplink buffer capacity has exceeded the corresponding threshold value,

若已经超过,则执行步骤(e5),否则返回步骤(b); (e5)进行公共信道向专用信道的类型转换。 If has been exceeded, the step (E5), otherwise step (b); (e5) for converting a common channel to a dedicated type of channel. 进一步地,上述方法可具有以下特点:所述步骤(b)还包括控制面设置测量结杲的上才艮方式的步骤,所述步骤(c)进一步分为如下步骤:(cl)若上报方式为事件上报,则由用户面、UE判断测量结杲是否满足上报条件,若满足,则将测量结果上报至控制面,执行步骤(d),否则返回步骤(b);(c2)若上报方式为周期上报,则测量控制指令中设置有上报间隔,基站、用户面、UE按照上报间隔周期性地向控制面上^^艮测量结果,并由控制面判断测量结果是否满足上报条件,若满足,则执行步骤(d),否则返回步骤(b)。 Further, the above method may have the following feature: the step (b) further comprises the step of setting a control plane only on the measurement results Gao Gen embodiment, said step (c) is further divided into the following steps: (Cl) If the reporting mode event reporting, by the user plane, the UE determines whether the measurement result Gao reporting condition is met, if satisfied, results of the measurement will be reported to the control plane, step (D), otherwise step (b); (c2) if the reporting mode periodical report, measurement control commands the reporting interval is provided, the base station, the user plane, UE ^^ Gen measurement to the control surface periodically reporting interval according to the results, by the control plane determines whether the measurement result reporting condition is met, if yes , the step (D), otherwise step (b). 进一步地,上述方法可具有以下特点:步骤(a)中设定的计数门限值、 各个緩存区容量对应的门限值、抖动标准的门限值均由控制面设定,在系统运行过程中能够根据小区的负荷动态地进行调整。 Further, the above method may have the following characteristics: step (a) set the count threshold value, buffer capacity corresponding to the respective threshold value, standard dither threshold value set by the control plane, during operation of the system can be dynamically adjusted according to a load cell. 进一步地,上述方法可具有以下特点:步骤(a)中设定的计数门限值、 各个緩存区容量对应的门限值、抖动标准的门限值可根据用户与系统之间业务流量变化幅度进行相应的动态调整。 Further, the above method may have the following features: a counting threshold value in step (a) is set, the threshold value corresponding to the respective buffer capacity, standard dither threshold value may vary according to the magnitude of traffic between a user and the system dynamically adjusted accordingly. 进一步地,上述方法可具有以下特点:步骤(c2)中所述上报间隔可根据用户与系统之间业务流量变化幅度进行调整,当业务流量变化较大,增大上报间隔;当业务流量变化很小,则减小上报间隔。 Further, the above method may have the following characteristics: step (c2) in the reporting interval may be adjusted according to the magnitude of traffic between a user and the system changes, the flow change when the traffic is large, the reporting interval is increased; when the traffic change is small, reporting interval is reduced. 与现有^t术相比,本发明具有以下优点: A、现有技术只考虑公共信道的负荷或吞吐量以及与用户相关的数据量, ^ T compared to the prior art, the present invention has the following advantages: A, prior art only considers the common channel load or throughput and the amount of data associated with the user,

并不考虑小区负荷、资源的供给能力等因素,使得切换后并不能节省系统资源;而本方法在现有技术的基础上,充分考虑到小区负荷、资源的供给能力等因素,结合公共信道的能力、小区的负荷以及资源使用情况来综合进行是否执行信道类型转换的判决,使得切换后能有效地节省系统资源,从而提高CDMA系统的容量。 Cell load considerations not, supply capacity of the resource and the like, so that after the handover can not save system resources; and the process on the basis of prior art, fully taking into account the load cell factors, supply capacity of the resource and the like, in conjunction with a common channel capacity load cell and resource usage to perform judgment whether the integrated channel type of conversion, so that the switching can effectively save system resources, thereby increasing the capacity of the CDMA system. B、 进一步地,本方法逻辑合理、效率高,能够根据业务流量的变化及时进行调整,对资源合理利用,同时避免对系统其它控制方法,如负荷控制, 产生负影响。 B, further, the method is reasonable logic and high efficiency, can be adjusted according to the change in time of the traffic, the rational use of resources, while avoiding systems other control methods, such as load control, negative impact. C、 采用本方法还可根据小区负荷、用户与系统之间业务流量变化幅度对计数门限、各个緩存区容量对应的门限值、抖动门限和上报间隔进行动态. 调整,能适应动态变化的无线环境。 C, the present method may also change the amplitude of the traffic count threshold, the threshold value corresponding to the respective buffer capacity, and the jitter threshold reporting interval dynamically. Adjustments between the load cell, and the system user, to adapt to dynamic radio surroundings. 附图说明图1是WCDMA (宽带码分多址)系统的无线协议层结构图;图2是本发明在连接建立时的主流程图;图3是图2中信道类型转换判决算法的子流程图。 BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a configuration diagram of the radio protocol layer WCDMA (Wideband Code Division Multiple Access) system; FIG. 2 is a main flowchart of the present invention to establish a connection; FIG. 3 is a flowchart showing the sub-type 2 channels in the conversion decision algorithm Fig. 具体实施方式为深入了解本发明码分多址系统中公共信道向专用信道的类型转换方法,下面结合附图及具体实施例对本发明进行详细说明。 DETAILED DESCRIPTION To better understand the type of conversion method in CDMA system according to the present invention, a common channel to a dedicated channel, in conjunction with the accompanying drawings and the following specific embodiments of the present invention will be described in detail. 图1所示的是WCDMA系统的无线协议层结构图,无线接口协议的作用是建立、重新配置和释放无线承载业务,由下而上依次称为物理层(层1 )、 数据链路层(层2 )和网络层(层3 )。 Figure 1 shows a configuration diagram of a radio protocol layer WCDMA system, the role of a radio interface protocol is to establish, re-configuration and release of radio bearer services, are referred to bottom physical layer (layer 1), data link layer ( layer 2) and the network layer (layer 3). 从控制面来看,层2包含两个子层: 媒体接入控制(MAC)协议层和无线链路控制(RLC)协议层;从用户面看,除了MAC层和RLC层外,还有两个依赖于业务的协议层:分组数据汇聚协议(PDCP)和广播/组播控制协议(BMC)。 From the control plane perspective, layer 2 contains two sub-layers: Medium Access Control (MAC) protocol layer and a radio link control (RLC) protocol layer; from the user perspective, in addition to the MAC layer and the RLC layer, there are two It depends on the service protocol layers: a packet data convergence protocol (PDCP) and broadcast / multicast control protocol (BMC). 层3包含的无线资源控制(RRC)属于控制平面。 Layer 3 comprising a radio resource control (RRC) belong to the control plane. 物理层通过空中接口提供信息传送业务,执行以下功能:前向纠错编码和译码,宏分集分布/组合,切換执行,检错,传输信道的复用和解复用, 传输信道到物理信道的映射,调制、解调,扩频、解扩,功率控制,频率和时间的同步等其它一些功能。 The physical layer provides information transfer services over the air interface, performs the following functions: forward error correction encoding and decoding, macrodiversity distribution / combining, handover execution, error detection, transport channel multiplexing and demultiplexing, transport channels to physical channels mapping, modulation, demodulation, spreading, despreading and synchronization control other functions of power, frequency and time. MAC层提供在对等MAC实体之间的业务数据单元的未确认传输。 MAC layer is provided between the MAC peer entities service data units unconfirmed transmissions. MAC 层功能为每个传输信道选择适当的传输格式,这取决于数据速率。 MAC layer functions to select the appropriate transport format for each transport channel depending on data rate. 在一个用户的数据流之间和在不同的用户的数据流之间的优先级处理,控制消息的调度,更高层PDU的复用和解复用,以及其它一些功能。 In the data flow between a user and priority handling between data flows of different users, the scheduling control messages, multiplexing higher layer PDU and demultiplexing, and some other functions. 具体地,MAC层执行传输格式与无线承载的重配。 Specifically, MAC layer performs the transport format and radio bearer reconfiguration. RLC层执行各种功能,包括RLC连接的建立、释放和维护,PDU(协议数据单元)的分段、组装,级联,重传,重复监测,流量控制和其它功能。 The RLC layer performs various functions including the establishment of the RLC connection, release and maintenance, PDUs (protocol data unit) segments, assembly, cascade, retransmission, repeats the monitoring, flow control and other functions. 被指派给用户连接的发送数据的緩存器存在于RLC层。 Is assigned to the transmission data of the user connection is present in the RLC layer buffer. PDCP只存在于分组交换业务,BMC用来传送小区广^"中心产生的无线接口消息。在UTRAN (通用无线通信系统地面无线接入网络)中网络层的控制平面部分由无线资源控制协议组成。RRC层分配无线资源和通过无线接口处理控制命令,例如,无线接入承载的控制命令,测量报告和类型切换指令。本发明示意的实例算法中的业务数据发送緩存区的占用情况由RLC层上报给MAC层,切换判决与切换指令由RRC层进行,业务量的统计、类型转换的执行由MAC层进行。图2所示本发明的一个实施例在连接建立时的主流程图,该实施例采用事件触发方式,基站控制器系统上电运行,将计数器置为初始状态,并设置计数器的计数门限值、用户接收和发送緩存区容量的门限值、公共信道下行和上行緩存区容量的门限值、抖动标准的门限值等参数;其中,抖动标准门 PDCP is only present in the packet switched service, for transmitting a wide BMC cell ^ "center radio interface message generated in the control plane part of the network layer (a wireless communication system Universal Terrestrial Radio Access Network) and UTRAN by a Radio Resource Control composition. the RRC layer controls radio resources are allocated and processing commands the wireless interface, e.g., radio access bearer control command, the type of measurement report and handover instructions traffic data a schematic example of an algorithm of the present invention the transmission buffer occupancy reporting by the RLC layer to the MAC layer, a handover decision and the switching instruction by the RRC layer, traffic statistics, type conversion is performed by the MAC layer. in the main flowchart illustrating an embodiment of establishing the connection shown in FIG. 2 of the present invention, this embodiment event-triggered mode, the system base station controller electrically operated, the counter is set to an initial state, and the door of the counter to set the count value, the user to receive and send buffer capacity threshold, a common channel downlink and uplink buffer capacity threshold value, standard dither threshold parameters; wherein the jitter standard door

限的设置针对数据业务流量具有抖动性这一情况,因为仅考虑业务流量高于某个门限值并不完全合理,所以相应设置一个低的门限值,作为检测业务流量发生抖动的一个标准,当业务流量低于这个门限值时,将进行信道类型转换的计数器清0,这样可以避免不必要的转换;另外,各緩存区的门限值可以设为相对于总緩存区的一个百分比,也可以设成一个绝对门限值。 The limit set with a shake of the situation for the data traffic, considering that only traffic above a certain threshold is not entirely reasonable, so the corresponding set a low threshold as a standard traffic detecting the occurrence of jitter when the traffic is below the threshold value, the channel counter will be cleared to 0 type converted, to avoid unnecessary transitions; Further, the threshold value of each buffer may be set as a percentage of the total buffer It can also be set to an absolute threshold. 步骤201,当用户向基站控制器系统申请业务,即需要增加或新建一个连接时,具体表现在Iu 口(第三代系统通信伙伴计划中的标准接口:接入网与核心网的接口)的消息就是:RAB ( Radio Access Bearer无线接入承栽) 消息指派请求;步骤202,基站控制器系统进行接纳控制,并将用户业务建立在公共信道上,根据公共信道的传输能力,确定所能承载的最大数据量;按照公共信道的所能提供的能力来传输数据;步骤203,控制面分别向基站、UE (用户设备)和用户面发送测量控制指令,要求基站进行小区负荷测量,而用户面进行用户接收緩存区容量和下行公共信道緩存区容量的测量,UE进行用户发送緩存区容量和上行公共信道緩存区容量的测量,该测量控制指令中包括有预设的用户接收、发送緩存区容量的门限值和抖动标准的门限值;步骤204,基站、UE和用户面按 Step 201, when the user service request to a base station controller system, i.e. be increased or a new connection, specifically in the Iu interface (Third Generation Partnership Project system in the standard interface: the access network interface and a core network) in message is: RAB (radio access bearer radio access bearing plant) assignment request message; step 202, the base station controller admission control system, and the user traffic on the common channel established according to the transmission capacity of the common channel, the carrier can determine the maximum amount of data; according to the capacity of the common channel can provide for transmitting data; a step 203, the control surfaces are to the base station, the UE (user equipment) and the user plane sends measurement control commands, requires the base station for the cell load measurements, and the user plane user receiving buffer capacity and downstream measured common channel buffer capacity, the UE user transmission buffer capacity and an uplink measurement common channel buffer capacity, the measurement control command includes a preset user to receive, transmit buffer capacity and the threshold jitter threshold criteria; step 204, the base station, the UE and the user plane according to 要求进行测量,用户接收、发送緩存区的容量由RLC层上报给MAC层,MAC层根据测量结果与其门限值进行比较,如果用户接收緩存区的容量大于设置的相应门限值或是小于抖动标准的门限值,或者用户发送緩存区的容量大于设置的相应门限值或是小于抖动标准的门限值,则执行步骤205,否则执行步骤207;步骤205,基站向控制面上报小区的负荷,若用户接收緩存区的容量大于设置的相应门限值或是小于抖动标准的门限值,则用户面向控制面上报用户接收緩存区容量和下行公共信道緩存区容量,若用户发送緩存区的容量大于设置的相应门限值或是小于抖动标准的门限值,则UE向控制面上报用户发送緩存区容量和上行公共信道緩存区容量; 步骤206,进入类型转换判决算法子流程; 步骤207,继续进行下一次测量; 步骤20S,结東。 Require measurement, the user receives, transmit buffer capacity reporting by the RLC layer to the MAC layer, the MAC layer compares the measurement result with its threshold value, if the user receives a corresponding gate buffer capacity greater than or smaller than the set threshold dithering standard threshold or a user respective transmission capacity buffer gate is less than or greater than the set value of the standard dither threshold value, step 205 is performed, otherwise step 207; step 205, the base station reported to the control cell surface load, when the user receives a corresponding gate buffer capacity greater than or smaller than the set threshold jitter standard threshold value, the user-oriented control plane messages and the user receiving buffer capacity downlink shared channel buffer capacity, if the user sends a buffer a capacity greater than the set threshold value or less than a corresponding dither threshold criteria, the UE sends packets to the control plane and the user buffer capacity uplink shared channel buffer capacity; step 206, the type of conversion into the decision algorithm sub-process; step 207, the measurement continues; step 20S, East knot. 而本方法还可以采用周期上报方式,在该方式下测量控制命令中设置有上报间隔,不包含门限,基站、UE和用户面按照上^J'司隔周期性地向控制面上报测量结果,而与门限值的比较是控制面自己来进行的,只有在满足小于门限值的情况下才进一步判决;基站、UE、用户面仅进行相应的测量; 在收到测量结果时,控制面需把结果值与门限值比较即可,后续的步骤相似。 And this method may also be employed periodic reporting mode, in which mode measurement control command is provided with a reporting interval does not include the threshold, the base station, the UE and the user plane according to the ^ J 'Division compartment periodic measurement result to the control plane packets, when compared with the threshold value of their control plane is carried out, only in a case where judgment is further satisfied is less than the threshold value; the base station, the UE, only the user plane for respective measurement; upon receiving the measurement result, the control plane the required value of the threshold comparison result can, similar to the subsequent steps. 本方法之所以采用计数器,是因为数据业务突发性的特征,虽然业务量小于设定的门限值只是暂时的,如果将公共信道向专用信道转换后,緩存区中的数据量可能因为公共信道的负荷而减小,或者该连接的数据容量急剧降低。 This method has been adopted counter, wherein the data traffic is bursty because, although the traffic is smaller than the set threshold value is only temporary, if the common channel to the dedicated channel conversion, the amount of data in the cache may be because the public channel load decreases drastically reduced or the capacity of the data connection. 这样,很可能会将连接立即又切换到公共信道,由此造成一种"乒乓效应"。 Thus, it might then switched immediately connected to a common channel, thereby create a "ping-pong effect." 因为每次信道类型切换都会消耗终端的电池,增加系统额外的信令开销,并且容易造成分组数据的丟失,所以为了避免这种情况,本方法采用了计数器,每次监测到的緩存容量大于门限值时,计数器就加l,如果检测到的门限值发生小于某个门限值那么计数器就清0,只有当记数器超过计数门限时才进行进一步的判定。 Since each channel type switching consumes battery terminal, increasing the system additional signaling overhead, and easily cause loss of data packets, so in order to avoid this, the method uses a counter each time the monitored buffer capacity larger than the threshold limit value, the counter L is incremented, if the detected threshold occurs less than a certain threshold then the counter is cleared only when the counter count exceeds the threshold before further determination. 如果计数门限设置的低,那么会增大调整的频率, 由此增加系统的负荷;如果设置的高,对业务量的突发性响应的较慢。 If the count threshold is set low, then the frequency adjustment will increase, thereby increasing system load; high if provided, to slow traffic burst response. 因此计数门限可以预先设定一个值,根据系统的负荷、业务量的突发情况等因素进行相应的调整。 Thus count threshold may be a predetermined value, corresponding adjustment factors according to the system load, traffic emergency situations and the like. 本方法中预先设定的计数门限值、各个緩存区容量对应的门限值、抖动标准的门限值和上报间隔这些作为判决使用的一些参数均在控制面设定,这些值是预先设定好,初始值的设定可以通过统计的方法获得,也可以通过一些测量、仿真来获取,在系统运行过程中能够根据小区的负荷动态、用户与系统之间业务流量变化幅度等参照因素地进行动态调整,采用反馈机制:当业务流量变化的较大,那么就相应增大上报间隔,可以平滑变化幅度;当业务流量变化的很小,那么就相应减小上报间隔,以便能够分辨出变化趋势。 The method of the present count preset threshold value, the threshold value corresponding to the respective buffer capacity, standard dither threshold reporting interval and some of these parameters are used in the judgment is set in the control plane, these values ​​are set in advance be good, sets the initial value can be obtained by statistical methods, can also be obtained by some measurements, the simulation can be based on the reference amplitude variation factor in the traffic load between the cells dynamic, system user during system operation dynamically adjusted using a feedback mechanism: when the change in traffic is large, then a corresponding increase in reporting interval may be a smoothly varying amplitude; when the traffic flow change is small, then the reporting interval is reduced accordingly, to be able to distinguish the change trend. 图3所示图2中信道类型转换判决算法的子流程图,对应于图2中的步骤206。 Step 3 shown in FIG. 2 for channel type decision sub conversion algorithm flowchart, corresponding to 206 in FIG. 2. 步骤301,若用户接收緩存区的容蚤l子用卢接收緩存区容蚤的门限值, 或用户发送緩存区的容量大于用户发送緩存区容量的门限值,执行步骤304;步骤302,若用户接收緩存区的容量小于抖动标准的门限值,或用户发送緩存区的容量小于抖动标准的门限值,执行步骤303;步骤303,计数器清O,并结束流程;步骤304,判断计数器的累计值是否大于计数门限值,若大于,则执行步骤306,否则执行步骤305;步骤305,计数器加l,并结束流程;步骤306,判断小区负荷是否过载,若不过载,则需要申请码资源,根据码资源的申请情况:资源满足要求,资源申请到但是产生的效果并不比现在更好,没有申请到资源等三种不同情况分别采取不同的处理方式,执行步骤307,否则结束流程;步骤307,判断系统能否提供可用的信道化码资源,若能,则执行步骤308,否则结束流程;步骤308 Step 301, when the user receives the sub-receiving buffer fleas l Lu received by buffer capacity threshold fleas, or user transmission capacity transmission buffer is greater than a threshold user buffer capacity, step 304; step 302, If the subscriber capacity of the receiving buffer is smaller than the standard threshold value of jitter, or the user transmission capacity is smaller than the standard threshold jitter buffer area, performing the step 303; step 303, O counter is cleared, and the flow ends; step 304, determines whether the counter if the accumulated value is greater than the count threshold value, if greater than perform step 306, otherwise step 305; step 305, the counter is incremented L, and the flow ends; step 306, it is determined whether the cell overloading, if not overloaded, it is necessary to apply code resources, code resources according to the application where: resources to meet the requirements, but the effect to apply the resource is not better than now, did not apply to the three different resources were taken a different approach, step 307, otherwise the process ends ; step 307, the system determines the availability of channelization codes available resources, if, step 308 is performed, otherwise, flow ends; step 308 判断系统提供可用码资源的传输速率是否大于公共信道的传输速率,若大于,则执行步骤310,否则执行步骤309;步骤309,判断公共信道下行或上行的緩存区容量已经超过门限值,若已经超过,则为了防止公共信道的緩存区溢出,执行步骤310,否则结束流程;步骤310,进行公共信道向专用信道的类型转换,该类型转换分为下行和上行两种,可根据实际情况进行下行信道或上行信道的类型转换。 Determining whether the system provides the available code resources transmission rate greater than the transmission rate of the common channel, if more than perform step 310, otherwise step 309; step 309 determines the common channel downlink or uplink buffer capacity has exceeded the threshold value, if has been exceeded, in order to prevent the common channel buffer overflow, step 310 is performed, otherwise, flow ends; step 310, common channel type conversion to a dedicated channel, the type of conversion into downstream and upstream two kinds may be made according to actual situation type downlink channel or an uplink channel conversion. 本发明是在CDMA系统运行过程中用于公共信道向专用信道进行类型 The present invention is a type of common channel to dedicated channel in the CDMA system during operation

转换的方法,主要基于与用户相关的接收和发送緩存区的业务憂的测憂,在大于预先设定门限值时,结合小区的负荷是否满足条件,即小区负荷不过载,以及小区资源是否满足要求,即小区资源的体现对于WCDMA是下行的信道化码资源,对于CDMA2000是信道单元,资源的提供能力可以通过是否提供合适的速率来进行判断,合适的小区资源指系统可以提供更高的传输速率的信道化码资源,此外还考虑到防止公共信道的緩存区溢出,从而最终作出信道类型转换的决定。 Conversion method, mainly based on the measured transmitting and receiving traffic worry worry buffer area associated with the user, when greater than a predetermined threshold value, in conjunction with load cell meets the condition, i.e., the load cell is not overloaded, and whether the cell resources to meet the requirements, i.e., it reflects the cell resources for the WCDMA downlink channelization code resources, for CDMA2000 is a channel unit providing resource capacity can be judged by whether an appropriate rate, a suitable cell resource assignment system can provide higher channelization code resource transmission rate, also in view of preventing common channel buffer overflow, so that the final decision on the channel type of conversion. ^^用本方法进行信道类型切换后,能真正有效地节省系统资源,从而提高CDMA系统的容量。 After the channel type switching ^^ carried out with the present method, to be truly effective conserve system resources, thereby increasing the capacity of the CDMA system.

Claims (9)

1、一种码分多址系统中公共信道向专用信道的类型转换方法,其特征在于,它包括如下步骤: (a)基站控制器系统上电运行,将计数器置为初始状态,并设置计数器的计数门限值、用户接收和发送缓存区容量的门限值、公共信道下行和上行缓存区容量的门限值; (b)基站控制器系统接受用户申请,并将用户业务建立在公共信道上,同时控制面向基站、UE和用户面发送测量控制指令,要求基站进行小区负荷测量,而用户面进行用户接收缓存区容量和下行公共信道缓存区容量的测量,UE进行用户发送缓存区容量和上行公共信道缓存区容量的测量; (c)判断步骤(b)中的测量结果是否满足上报条件,若满足条件则上报测量结果,执行步骤(d),否则返回步骤(b);其中,所述上报条件包括用户接收或发送缓存区的容量大于其相应的门限值; (d)控制面接收测量结果, A code division multiple access system, common channel, wherein the dedicated channel type conversion method, comprising the steps of: operating the power (a) system base station controller, setting the counter to an initial state, and set the counter count threshold, and the user receives the transmission buffer capacity threshold, a common channel downlink and uplink buffer capacity threshold; (b) a base station controller system accepts user applications, and user services based on common channel on the same time the control for the base station, the UE and the user plane sends measurement control commands, requires the base station for the cell load measurements, and the user plane for the user receiving buffer capacity and downstream measured common channel buffer capacity, the UE user transmission buffer capacity and uplink measurements common buffer capacity channel; measurements (c) determining step (b), satisfies a report condition, if the condition is satisfied then reports the measurement result, performing step (D), otherwise step (b); wherein the reporting said condition includes a user receiving or sending buffer capacity greater than its respective threshold value; (d) receives the measurement result of the control plane, 启动计数器加1,若计数器的累计值大于计数门限值,则执行步骤(e),否则返回步骤(b); (e)控制面根据接收的测量结果和系统码资源的申请情况判断是否满足信道类型转换的条件,若满足,进行公共信道向专用信道的类型转换,否则,不进行公共信道向专用信道的类型转换,返回步骤(b);其中,信道类型转换的条件包括小区负荷不过载且系统可提供合适的小区资源。 Start counter is incremented when the accumulated count value of the counter is greater than a threshold value, step (E), otherwise step (b); (e) a control plane and the measurement result is determined according to the application where code resources received by the system satisfies channel type conversion conditions, if satisfied, common channel type conversion to a dedicated channel, otherwise, not the common channel type conversion to the dedicated channel, returning to step (B); wherein the channel type conversion conditions including a cell load overloading and the system may provide appropriate cell resources.
2、 根据权利要求1所述的码分多址系统中公共信道向专用信道的类型转换方法,其特征在于:所述步骤(a)中还包括设置抖动标准的门限值; 步骤(c)中上报条件还包括用户接收或发送緩存区的容量小于抖动标准的门限值,其中该抖动标准门限值均小于用户接收或发送緩存区容量的门限值。 2. The system of claim 1 in CDMA type conversion to a common channel dedicated channel as claimed in claim wherein: said step (a) further comprises a standard jitter threshold; step (c) in reporting condition further comprises a user receiving or sending buffer capacity is smaller than the standard threshold value of jitter, the jitter which is less than the standard threshold value the user receiving or transmitting buffer capacity threshold.
3、 根据权利要求2所述的码分多址系统中公共信道向专用信道的类型转换方法,其特征在于:所述步骤(d)进一步分为以下步骤(dl )判断用户接收或发送緩存区的容量是大于相应的门限值,还是小亍抖动标准的门限值,若大于緩存区容量的门限值,则执行步骤(d2);若小于抖动标准的门限值,将计数器清零并返回步骤(b);(d2)判断计数器的累计值是否大于计数门限值,若大于,则执行步骤(e),否则计数器加1,返回步骤(b)。 3, the CDMA system of the type 2 conversion methods common channel to a dedicated channel according to claim, wherein: said step (d) is further divided into the following steps (DL) to determine the user receiving or sending buffer capacity is greater than the corresponding threshold value, right foot or small jitter standard threshold value, if the cache capacity is greater than the threshold value, executing step (D2); if jitter is smaller than the standard threshold value, the counter is cleared and returns to step (B); whether the integrated value (d2) determination count counter is greater than the threshold, if so, then performing step (E), otherwise the counter is incremented by 1, returned to step (b).
4、 根据权利要求3所述的码分多址系统中公共信道向专用信道的类型转换方法,其特征在于:所述步骤(e)进一步分为以下步骤(el)判断小区负荷是否过载,若不过载,则执行步骤(e2),否则返回步骤(b);(e2)判断系统能否提供可用的码资源,若能,则执行步骤(e3),否则返回步骤(b);(e3 )判断系统提供可用码资源的传输速率是否大于公共信道的传输速率,若大于,则执行步骤(e5),否则执行步骤(e4);(e4 )判断公共信道下行或上行的緩存区容量已经超过相应的门限值, 若已经超过,则执行步骤(e5),否则返回步骤(b);(e5)进行公共信道向专用信道的类型转换。 4. The system according to claim 3 in CDMA type conversion of the common channel to dedicated channel, characterized in that: said step (e) is further divided into the following steps (el) determining whether a cell overloading, if However carrier, step (E2), otherwise step (b); (e2) determining system suggest code resources available, if, the step (E3), otherwise step (b); (e3) determining whether the system provides the available code resources transmission rate greater than the transmission rate of the common channel, and if so, then performing step (E5), otherwise step (e4); (e4) determining a common channel downlink or uplink buffer capacity has exceed the threshold, if more than, the step (E5), otherwise step (b); (e5) for converting a common channel to a dedicated type of channel.
5、 根据权利要求1所述的码分多址系统中公共信道向专用信道的类型转换方法,其特征在于:所述步骤(b)还包括控制面设置测量结果的上报方式的步骤。 5. The system according to claim 1 in CDMA type conversion of the common channel to dedicated channel, characterized in that: said step (b) further comprises the step of setting a control plane of a measurement result reporting mode.
6、 根据权利要求5所述的码分多址系统中公共信道向专用信道的类型转换方法,其特征在于:所述步骤(c)进一步分为如下步骤:(cl)若上报方式为事件上报,则由用户面、UE判断测量结果是否满足上报条件,若满足,则将测量结果上报至控制面,执行步骤(d),否则返回步骤(b); (c2)若上报方式为周期上报,则测量控制指令中设置有上报间隔,基站、用户面、UE按照上报间隔周期性地向控制面上报测量结果,并由控制面判断测量结垠是否满疋上报紊件,若满疋,則执行步骤(d),否则返回步骤(b)。 6, according to the CDMA system according to the type of conversion methods common channel to dedicated channel as claimed in claim wherein: said step (c) is further divided into the following steps: (Cl) If the reporting mode is reported to the event , by the user plane, the UE determines whether the measurement result reporting condition is met, if satisfied, the measurement results reported to the control plane, step (D), otherwise step (b); (c2) if the periodic reporting mode is reported, measurement control commands the reporting interval is provided, the base station, the user plane, the UE measurements periodically in accordance with the control plane messages reporting interval, the control plane is determined by the measurement results reported by Eun-full Cloth tangled member, if the full piece goods, is executed step (d), otherwise step (b).
7、 根据权利要求2所述的码分多址系统中公共信道向专用信道的类型转换方法,其特征在于:步骤(a)中设定的计数门限值、各个緩存区容量对应的门限值、抖动标准的门限值均由控制面设定,在系统运行过程中能够根据小区的负荷动态地进行调整。 7. The system of claim 2 in CDMA type conversion common channel to dedicated channel as claimed in claim, wherein: step (a) set the count threshold value, corresponding to the respective buffer capacity threshold value, standard dither threshold value set by the control plane can be adjusted dynamically according to a load cell in the system is running.
8、 根据权利要求6所述的码分多址系统中/>共信道向专用信道的类型转换方法,其特征在于:步骤(a)中设定的计数门限值、各个緩存区容量对应的门限值、抖动标准的门限值可根据用户与系统之间业务流量变化幅度进行相应的动态调整。 8, the CDMA system according to claim 6 in /> channel type conversion dedicated channel to common channel, characterized by the steps of: (a) set the count threshold value, corresponding to the respective buffer capacity threshold value, standard dither threshold may be dynamically adjusted based on the corresponding traffic between the user and the system change width.
9、 根据权利要求8所述的码分多址系统中公共信道向专用信道的类型转换方法,其特征在于:步骤(c2)中所述上报间隔可根据用户与系统之间业务流量变化幅度进行调整,当业务流量变化较大,增大上报间隔;当业务流量变化很小,则减小上报间隔。 9. The system of claim 8 in CDMA type conversion to a common channel dedicated channel as claimed in claim, wherein: step (c2) in the reporting interval may be carried out according to the magnitude of traffic between a user and the system changes adjusting, when the traffic variation is large, increasing the reporting interval; traffic when little change reporting interval is reduced.
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