CN100505939C - Realization method and device for controlling load balance in communication system - Google Patents

Realization method and device for controlling load balance in communication system Download PDF

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CN100505939C
CN100505939C CN 03159529 CN03159529A CN100505939C CN 100505939 C CN100505939 C CN 100505939C CN 03159529 CN03159529 CN 03159529 CN 03159529 A CN03159529 A CN 03159529A CN 100505939 C CN100505939 C CN 100505939C
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load
frequency
cell
carrier frequency
inter
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CN1599471A (en )
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王作芬
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华为技术有限公司
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Abstract

本发明提供一种通讯系统中控制负载平衡的实现方法,包括:定时检测各载频小区的负载;根据检测结果确定需要控制负载平衡的载频小区;对所述需要控制负载平衡的载频小区进行负载平衡控制。 The present invention provides a communication system for load balancing implemented method, comprising: detecting a timing of each carrier frequency of the load cell; determining a need to control the carrier frequency of the cell load balancing based on the detection result; load balancing the need to control the carrier frequency of the cell load balance control. 本发明还提供一种通讯系统中控制负载平衡的装置,包括:负载检测模块、确定控制负载平衡模块、负载平衡模块。 The present invention also provides an apparatus for controlling communication load balancing system, comprising: a load detection module determines the load balancing control module, the load balancing module. 利用本发明,通过盲切换方式将负载重的、需要进行负载平衡控制的载频小区中的移动终端用户进行异频切换,避免了移动终端用户使用压缩模式进行异频测量;同时由于本发明最大限度的减少了异频切换的次数,同时保证了异频切换后负载轻的载频小区的负载不会急剧加重,真正、高效率的实现了负载平衡控制;从而实现了提高通讯系统性能的目的。 With the present invention, by way of a blind handover heavy load, require the mobile terminal user load cell balance control the carrier frequency in the inter-frequency handover, the mobile terminal user to avoid the use of inter-frequency compressed mode measurements; the same time as the present invention, the maximum limits reduce the number of inter-frequency handover, the load while ensuring inter-frequency handover light load carrier frequency cell does not rapidly increase, real, efficient load balancing control is achieved; thereby achieving the purpose of improving the performance of the communication system .

Description

一种通讯系统中控制负栽平衡的实现方法及装置 Method and device to achieve a negative balance of plant control communication system

技术领域 FIELD

本发明涉及网络通讯技术领域,具体涉及一种通讯系统中控制负载平衡的实现方法及装置。 The present invention relates to network communication technologies, and particularly relates to a method and an apparatus to achieve communication system for load balancing.

背景技术 Background technique

在移动通讯技术领域中CDMA (码分多址接入)技术已逐渐发展成熟。 In the field of mobile communications in the CDMA (Code Division Multiple Access) technology has been gradually developed. 在CDMA技术应用初期,由于采用CDMA技术的CDMA系统的话务量不大,一个栽频往往覆盖较大的区域。 In early CDMA technology, since the traffic not using CDMA technology, CDMA system, a pilot plant often cover a larger area. 随着CDMA移动用户的日益增多, 一个载频难以满足日益增长的话务量需求,此时往往会在热点地区增加一个载频来吸收话务量。 With the increasing number of CDMA mobile users, a carrier can not meet the increasing traffic demand, this time tends to increase a carrier to absorb traffic in hot spots. 这样就出现多个载频覆盖相同区域的情况。 Thus a plurality of carrier frequencies covering the same area would occur. 如附图l所示,在图l中,每一个圆代表一个小区,设定载频1的覆盖范围比较大,载频1用fl表示;图中标有A、 B、 C的三个圆所在的小区为话务量大的热点地理位置区域,为A、B、 C三个小区分别增加载频2,用f2表示。 As shown in Figure l accompanying drawings, in FIG. L, each circle represents a cell, the carrier frequency is set relatively large coverage area 1, the carrier frequency is represented by FL 1; FIG three circles labeled A, B, C where large cell area of ​​traffic hot spot location, as a, B, C cells increased three carrier 2, respectively, represented by f2.

在实际的CDMA系统中,由于CDMA移动台新呼叫的4妄入、移动台位置的变化、移动台发送和接收信号速率的变化、外界的干扰和环境的变化等因素都会导致各载频的负载发生随机变化,这就会出现负载不平衡的状况,所谓负载平衡,主要是指同一地区内的不同载频之间的负载平衡。 In an actual CDMA system, since the 4 jump into the CDMA mobile station a new call, change of mobile station location, a change in the mobile station for transmitting and receiving a signal rate, external interference and environmental changes and other factors can lead to the respective carrier frequency occurs in the load random changes, which will load imbalance occurs, the so-called load balancing, mainly refers to the load balancing between different carrier frequencies within the same area. 负载不平衡会造成有的载频负载较轻,有的载频负载较重。 Load imbalance will result in some carrier frequency load lighter, some heavier load carrier frequency. 载频的负载较轻会使通讯系统的资源得不到充分利用。 The lighter load carrier frequency communication system will make the resources are not fully utilized. 载频的负载较重会造成移动用户的通讯质量受到严重影响。 The heavy load carrier frequency will cause the communication quality of mobile users have been seriously affected. 由于CDMA系统是自干扰相互攀升的系统, 一旦CDMA系统的负载达到一定程度将使得CDMA系统性能迅速恶化,导致系统内业务的QoS (服务质量)不能得到满足、甚至出现大量CDMA移动用户掉话等严重后果。 Since CDMA systems is climbing system from interfering with each other, once the load reaches a certain level of the CDMA system will cause rapid deterioration of the performance of the CDMA system, cause the system service QoS (Quality of Service) is not satisfied, even a large number of dropped calls for CDMA Serious consequences. 为避免上述这种不同载频负载不平衡情况的出现,就需要对通讯系统资源的选择和利用进行控制,以达到不同载频的负载平衡,尽可能有效地利用通讯系统资源的目的。 To avoid such that different carrier frequencies imbalance load condition, it is necessary to select and use of communication system resources is controlled to achieve different carrier frequencies load balancing, efficient use of system resources communication purposes. 为了达到负载平衡,需要对小区内的移动终端用户进行异频切换,将负载较重的载频中的移动台切换至负载较轻的载频中。 To balance the load, the need for the mobile terminal user in the cell inter-frequency handover, the mobile station will be a heavy load carrier frequency is switched to a lighter load carrier frequencies.

现有技术中,通常在下列情况下移动台才会选择到异频小区中:处于通信状态的移动台向移动通讯网络设备上报的测量报告中指示服务小区信号质量已经低于某个门限,移动通讯网络设备才会通知移动台启动异频测量,通过测量异频邻近小区,移动通讯网络设备选择一个质量较好的并且满足切换判决条件的小区,通过执行异频硬切换过程让移动台切换到这个异频小区中。 In the prior art, typically the mobile station under the following conditions to select only the inter-frequency cell: a measurement report the mobile station is reported by the communication status to the mobile communications network device indicating a serving cell signal quality has fallen below a certain threshold, the mobile communication network device notifies the mobile station will start the inter-frequency measurements, inter-frequency neighboring cells measured by the mobile communications device to select a better network and satisfies a quality decision condition of the switching cell, so that the hard handover process to switch to the mobile station by performing inter-frequency the inter-frequency cell.

下面结合图2来说明利用现有技术进行异频切换的过程。 Here will be described the process of inter-frequency handover in conjunction with the prior art FIG. 图2是不同载频 FIG 2 is a different carrier frequency

覆盖相同区域的载频小区示意图。 Cover the same area of ​​the carrier cell. FIG.

在图2中,设fl在A区域的载频小区标识为Al, fl在B区域的载频小区标识为Bl, fl在C区域的载频小区标识为Cl;设f2在A区域的载频小区标识为A2, f2在B区域的载频小区标识为B2, f2在C区域的载频小区标识为C2。 In FIG. 2, provided fl carrier frequency cell area A is identified as of Al, fl carrier frequency cell region B is identified as Bl, fl carrier frequency cell C area identified as Cl; provided f2 in the carrier area A frequency cell identified as A2, f2 carrier frequency in the cell area B is identified as B2, f2 carrier frequency identifies a C2 cell C area.

如果载频小区Al的负载很重,根据现有技术,对于载频小区Al中处于通信状态的移动台只有位于载频小区Al边缘,即移动台测量到载频小区Al的信号质量已经低于某个门限后,移动通讯网络设备才通知移动台启动异频测量。 If the carrier frequency of the heavy load cell Al, according to the prior art, the carrier frequency for the mobile station in communications in the cell Al is only the carrier frequency located Al cell edge, i.e., the mobile station measures the carrier frequency of the signal quality of the cell has been lower than Al after a certain threshold, the mobile communications network equipment before notifying the mobile station starts inter-frequency measurement. 如果移动台为单接收机,那么就必须启动压缩模式对异频邻近小区,包括载频小区A2、 B2、 C2,全部进行异频测量,并将测量结果上报给移动通讯网络设备,移动通讯网络设备从中挑选出质量较好并满足异频切换条件的载频小区作为异频切换的目标小区,然后执行异频硬切换的过程。 If the mobile station is a single receiver, the mobile communication network must start the inter-frequency compressed mode on neighboring cells, comprising a carrier cell A2, B2, C2, all inter-frequency measurements, the measurement result reported to the mobile communications network equipment, and is preferably selected from the device to meet the conditions of inter-frequency handover carrier frequency cell as a target cell inter-frequency handover quality, then perform inter-frequency hard handover procedure. 如果载频小区Al的负载很重,对于载频小区Al中心地带的移动终端用户,现有技术无法将其切换到载频f2中。 If the carrier frequency of the heavy load cell Al, the mobile terminal user to a carrier, the cell Al in the heart of the prior art can not be switched to the carrier frequency f2. 显然,利用现有技术不能充分实现载频f2吸收话务量、减轻载频fl负载的目的。 Clearly, the prior art can not be sufficiently achieved absorbent carrier frequency f2 traffic, the purpose of reducing the load carrier frequency fl.

从上述技术方案的描述中可以看出,处于通信状态的移动台只有处于服务小区边缘时,即测量到服务小区的导频信号质量低于一定门限后才会进行异频测量,通过执行异频硬切换过程切换到另一个载频中。 As can be seen from the description of the above technical scheme, the mobile station is in the communication state only in service cell edge, i.e., the measured pilot signal serving cell quality falls below a certain threshold will be performed after inter-frequency measurement threshold, by performing inter-frequency hard handover process to switch to another carrier frequency. 当移动台位于服务小区中心时,即测量到服务小区的导频信号质量高于某个门限时,无论月l务小区的负载多么重,也始终不会进行异频测量,不会切换到另一个载频中。 When the mobile station located in the serving cell center, i.e. to the serving cell measured pilot signal quality is above a certain threshold, no matter how heavy the load cell traffic l month, it will not always perform inter-frequency measurement without switching to another a carrier frequency. 因此现有的技术不能真正起到负载平衡的作用。 Therefore, the existing technology can not really play a role in load balancing.

单接收机进行异频测量时必然使用压缩模式,压缩模式的使用会对CDMA系统的性能造成不良影响。 Performance necessarily use the compressed mode when inter-frequency measurement for a single receiver, the compressed mode will use the CDMA system adversely affected. CDMA通信系统是采用码字来区分不同的移动终端用户,移动终端用户可以在时间上一直连续的接收某频率的信号,它们不再具有象TDMA(时分多址)中那样的"空闲时隙,,来测量不同频率,因此,对于只有一个接收机的移动台,要实现对不同频率信号的测量,就必须使用压缩模式,通过码打孔等技术在无线帧中形成一段时间的传输"空隙",在这段空隙中,基站不向移动台传输任何数据,移动台可以将其射频接收机转换到需要监视的目标频率,对目标频率进行测量。码打孔等技术降低了数据的冗余度,按照信息论原理,为了弥补这种损失,打孔后的数据必须以更高功率发射,由于CDMA是自干扰相互攀升的系统,该功率的增加影响了CDMA系统的性能。 CDMA communication system is used to distinguish between different codewords mobile terminal user, a mobile terminal user can always receive a continuous signal of a certain frequency over time, they are no longer as TDMA (Time Division Multiple Access) as in the "idle time slot, , to measure different frequencies, and therefore, only one receiver for the mobile station, to realize the measurement signals of different frequencies, it is necessary to use a compressed mode, the transmission form "void" time period in a radio frame by code puncturing techniques in this gap, the base station does not transmit any data to the mobile station, the mobile station can be converted to the RF receiver to be monitored target frequency, the target frequency measurements puncturing code techniques reduce the data redundancy according to information theory, in order to compensate for this loss, the data must be punctured at a higher transmit power, since the mutual interference from a CDMA system to rise, increasing the power it affects the performance of the CDMA system.

发明内容 SUMMARY

本发明的目的在于,提供一种通讯系统中控制负载平衡的实现方法及装置,利用移动通讯网络设备主动定时检测各载频小区的负载来真正实现各载频小区的负载平衡控制,从而达到了提高移动通讯系统性能的目的。 Object of the present invention is to realize a method and apparatus for load balancing to provide a communication control system, using a mobile communications network device actively timing detection cell load of each carrier frequency to realize the load balancing control the carrier frequency of each cell, so as to achieve the purpose of improving the performance of mobile communication systems.

为达到上述目的,本发明提供的一种通讯系统中控制负载平衡的实现方法,包括: To achieve the above object, a communication system according to the present invention provides a control load balancing implemented method, comprising:

a、定时检测各载频小区的负载;b、 根据检测结果确定负载最重和负载最轻载频小区,在负载最重载频小区的负载大于预定负载绝对门限且负载最重和负载最轻载频小区的负载之差大于预定负载差值门限时,将所述负载最重和负载最轻载频小区确定为需要控 a, the timing of detecting the load of each carrier frequency cells; B, according to the detection result of the determination heaviest and lightest load carrier frequency cell, in most heavy duty load-frequency cell load is greater than a predetermined threshold and absolute load heaviest and lightest load the carrier frequency difference between the load cell load is greater than a predetermined difference threshold, the heaviest and the lightest load is determined as the carrier frequency needs to control cell

制负载平衡的载频小区; Load balancing system carrier frequency cells;

c、 对所述需要控制负载平衡的载频小区进行负载平衡控制。 c, load balancing the need to control the carrier frequency load cell balance control.

所述的步骤a包括:根据负载检测定时器定时检测各载频小区的负载。 Said step a comprises: the load detection timer timing detector cell load of each carrier frequency. 所述的步骤b包括:根据所述各载频小区的负载检测结果确定负载最重和 Said step b comprises: determining the heaviest load and the load of each carrier frequency of the result of the detection cell

负载最轻载频小区;根据预定负载绝对门限、预定负载差值门限判断负载最重 Lightest load cell carrier frequency; absolute load in accordance with a predetermined threshold, the predetermined difference threshold load heaviest load is determined

和负载最轻载频小区是否为需要控制负载平衡的载频小区; Whether the carrier frequency and the lightest load cell load balancing needs to be controlled carrier frequency cells;

如果负载最重载频小区的负载大于所述预定负载绝对门限且负载最重和负载最轻载频小区的负载之差大于所述预定负载差值门限,所述负载最重和负 If the load is heaviest loaded frequency cell load is greater than the predetermined load threshold and the absolute heaviest and lightest load of the frequency difference between the load cell load is greater than the predetermined difference threshold, the heaviest load and negative

载最轻载频小区为需要控制负载平衡的载频小区; Carrier-frequency cell lightest load balancing is necessary to control the carrier frequency of a cell;

否则,所述负载最重载频小区和负载最轻载频小区为不需要控制负载平衡的载频小区。 Otherwise, most of the load and the lightest load cell overload-frequency cells is necessary to control the carrier frequency of the carrier frequency cell load balancing.

所述的步骤c包括: Said step c comprises:

cl、开始为切换重试次数计次; cl, starts to count the number of switching times of retries;

c2、确定负载最重载频小区中需要异频切换到负载最轻载频小区中的移动终端用户; c2, determining a load required in the heaviest loaded frequency cell inter-frequency handover to the lightest load carrier frequency in the cell the mobile terminal user;

c3、对所述移动终端用户进行异频切换; c4、判断所述异频切换是否成功; c3, the inter-frequency handover for the mobile terminal user; c4, determines the inter-frequency handover is successful;

如果异频切换成功,结束本次负载平衡控制,负载检测定时器复位; 如果异频切换不成功,切换重试次数的计次值递增,判断切换重试次数的计次值是否大于切换重试次数; If the inter-frequency handover is successful, control ends the load balancing, load detection timer is reset; if the inter-frequency handover is unsuccessful, the switching count value times the number of retries is incremented, it is determined whether the switch count value of the number of retries times greater than the switching Retry frequency;

如果不大于切换重试次数,返回步骤c2; If the switch is not greater than the number of retries, processing returns to step C2;

如果大于切换重试次数,结束本次负载平衡控制,负载检测定时器复位。 If the retry number of times greater than the switching, control ends the load balancing, load detection timer is reset. 所述的步骤c2包括: Said step c2 comprises:

获取负载最重载频小区中各通讯状态的移动终端用户的负载; 获取负载最重载频小区的负载与负载最轻载频小区的负载差值的平均数; 将负载不大于所述平均数的移动终端用户中负载最大的移动终端用户作为需要进行异频切换的移动终端用户。 Get the load cell frequency heaviest loaded state of each mobile terminal user communication load; load difference obtaining the average frequency cell load heaviest loaded lightest load carrier and the load cell; load not greater than the average mobile terminal user in the mobile terminal user as the maximum load required inter-frequency handover of a mobile terminal user.

如果使用另一种方法,所述的步骤c2包括: If another method, said step c2 comprises:

获取负载最重载频小区中各通讯状态的移动终端用户的业务归一化因子; 将业务归一化因子不大于业务归一化因子门限的移动终端用户中业务归一化因子最大的移动终端用户作为需要进行异频切换的移动终端用户。 Get load most overloaded mobile terminal user service frequency cell communication status of each normalization factor; traffic normalization factor is not greater than the threshold factor mobile terminal user in the service factor normalized maximum service mobile terminals Normalized as the user of mobile terminal users need to inter-frequency handover. 所述的移动终端用户的业务归一化因子K为: The mobile terminal user traffic normalization factor K is:

K = 10 (y—x)/1Q xpx R当前业务/ R标准业务; K = 10 (y-x) / 1Q xpx R current service / R standard service;

其中:p为激活因子;x为标准业务信干比的目标值;y为当前业务信干比的目标值;IU前业务为当前业务的数据速率;R标准业务为标准业务的数据速率。 Wherein: p is activator; x is standard operating SIR target ratio; Y is a target SIR of the current service; IU data rate for the current service before service; R & lt standard business standard data rate service.

本发明还提供一种通讯系统中控制负载平衡的装置,包括: The present invention also provides an apparatus for controlling communication load balancing system, comprising:

负载检测模块:定时检测各载频小区的负载,并将检测到的各载频小区的负载传输至确定控制负载平#^莫块; Load detection module: a timing to detect the carrier frequency of the load cell, and the load of the transmission carrier frequency of each detected cell to determine the load level control block # ^ MO;

确定控制负载平衡模块:根据所述负载检测模块传输来的各载频小区的负载确定负载最重和负载最轻载频小区,在负载最重载频小区的负载大于预定负载绝对门限且负载最重和负载最轻载频小区的负载之差大于预定负载差值门限时,将所述负载最重和负载最轻载频小区确定为需要控制负载平衡的载频小区,并通知负载平衡模块; Determining a control load balancing module: determines heaviest and lightest load carrier frequency cell, in most heavy duty load-frequency cell load is greater than a predetermined load and the load is an absolute threshold detection module according to the load of the load of each carrier frequency transmitted from the best cell weight and the lightest load carrier frequency difference between the load cell load is greater than a predetermined difference threshold, the heaviest and the lightest load is determined as the carrier frequency cells need to control the carrier frequency of a cell load balancing, and notifies the load balancing module;

负载平衡模块:根据所述确定控制负载平衡模块通知的信息对需要进行负载平衡控制的载频小区中的移动终端用户进行负载平衡控制。 Load balancing module: the control information according to the determined load balancing module is required to notify the mobile terminal user load cell balance control the carrier frequency in the load balance control.

所述的负载平^f模块包括: ^ F The load level module comprises:

确定移动终端用户子模块:确定所述需要进行负载平衡控制的载频小区中需要进行异频切换的移动终端用户,并通知异频切换子模块需要进行异频切换的移动终端用户; Determining submodule mobile terminal user: determining the need for carrier-frequency cell load balance control needs to be performed in the inter-frequency handover of a mobile terminal user, and notifies the inter-frequency handover for the mobile terminal user sub-module needs inter-frequency handover;

异频切换子模块:对所述确定移动终端用户子模块通知的需要进行异频切 Inter-frequency handover submodule: the sub-module determines that the mobile terminal user is notified inter-frequency cut

换的移动终端用户进行异频切换。 Changing the inter-frequency handover for the mobile terminal user.

从本发明的上述技术方案可以看出,本发明通过移动通讯网络设备定时主动的检测各载频小区的负载,设定负载绝对门限和负载差值门限确定需要进行负载平衡控制的载频小区,并不需要移动终端用户进行异频测量,通过盲切换方式将负载重的、需要进行负载平衡控制的载频小区中的移动终端用户切换至负载轻的异频小区中,从而,当载频小区负载重时,即使移动终端用户处于服 As can be seen from the above technical solutions of the present invention, the apparatus of the present invention, a mobile communication network detects the timing of an active load of each carrier frequency of the cell, an absolute threshold setting load and determining the difference in the load threshold required load cell balance control of the carrier frequency, mobile terminal user does not need to be inter-frequency measurement, by way of a blind handover heavy load, the end user needs to move the carrier frequency load cell balance control is switched to the inter-frequency cell of lighter load, so that, when the carrier frequency cells when the load is heavy, even if the mobile terminal user in the service

务小区中心,也会被切换至负载轻的异频小区中;同时由于本发明在进行异频切换时,采用确定移动终端用户负载或确定移动终端用户业务归一化因子的方法来选取进行异频切换的移动终端用户,最大限度的减少了异频切换的次数, 保证了异频切换后负载轻的载频小区的负载不会急剧加重,真正、高效率的实 Service center of the cell will be switched to the light load inter-frequency cell; the same time as the present invention, when performing the inter-frequency handover, the mobile terminal user using the load determining method for determining mobile terminal user or service to a normalization factor selected for different frequency handover of a mobile terminal user, to minimize the number of inter-frequency handover, to ensure that the load after the inter-frequency handover light load carrier frequency cell does not rapidly increase, a true, high-efficiency solid

现了控制负载平衡的目的;而且,本发明的技术方案避免了移动终端用户使用压缩模式进行异频测量而引起的高功車发射的问题;从而实现了提高通讯系统性能的目的。 Now the control of the load balancing purposes; Further, aspect of the present invention avoids the problem of the compressed mode for the mobile terminal user using inter-frequency measurement caused by high power vehicle transmission; thereby achieving the purpose of improving the performance of the communication system.

附图说明 BRIEF DESCRIPTION

图l是通讯系统中多载频覆盖区域示意图; 图2是通讯系统中不同载频覆盖相同区域的载频小区示意图; 图3是本发明的控制负载平衡的流程图; 图4是本发明的控制负载平衡的装置。 Figure l is a schematic view of multi-carrier communication system frequency coverage area; FIG. 2 is a schematic view of a communication system different carrier frequencies covering the same area of ​​a cell carrier; FIG. 3 is a control load balancing flowchart of the present invention; FIG. 4 is the invention load balancing control means.

具体实施方式 detailed description

本发明的核心思想为移动通讯网络设备定时、主动的检测各载频小区的负载,并根据检测结果确定负载过重和负载过轻、需要控制负载平衡的栽频小区, 对所述需要控制负载平衡的小区进行负载平衡控制。 The core idea of ​​the invention is a mobile communication network the timing device, the active load carrier frequency of each detected cell, and determines the load is too light and overload, load balancing needs to be controlled according to a detection result planted frequency cell, the load needs to be controlled the load cell balance balance control.

移动通讯网络设备可通过定时器来实现定时主动的检测各载频小区的负载,如设定负载检测定时器,负载检测定时器超时则移动通讯网络设备检测各载频小区的负载。 The mobile communication network device may be implemented to detect the timing of an active load cell carrier frequency by a timer, such as the load detection timer is set, the load detecting timer times out communications network device detects the load of each carrier frequency of the mobile cell.

移动通讯设备检测到各载频小区的负载后,需要确定进行负载控制的小区,其实现方法为:设置负载绝对门限和负载差值门限。 Mobile communication device upon detecting the respective load carrier frequency cell, we need to determine the cell load control, which method is implemented: set load threshold and the absolute difference in the load threshold. 设置负载绝对门限的目的是为了判断载频小区的负载状况是轻还是重,如果不同载频小区的负载都是轻负载,就没有必要进行负载调整。 Setting an absolute threshold load object is to determine the carrier frequency of the cell is light or heavy load conditions, if different carrier frequencies are light load load cells, load adjustment is not necessary. 由于各载频小区的负载是波动的、随时变化的,所以通过设置负载差值门限可以避免不同载频小区的负载小范围内的波动造成不同载频之间的负载来回调整。 Since the load of each carrier frequency cell fluctuates, subject to change, so the difference in the load by setting the threshold to avoid fluctuations of the load cells with different carrier frequencies cause a small range of adjustment of the load back and forth between different carrier frequencies.

从检测到的各载频小区中选取一个负载最重载频小区和负载最轻载频小区。 Selecting a carrier frequency from each of the load cells to detect the most frequent heavy load cell and carrier frequency lightest load cell. 选取的这两个载频小区的负载如果同时满足下述两个条件则确定这两个载频小区是需要进行控制负载平衡的载频小区。 The two carrier frequencies selected load cells if both of the following two conditions is determined that the two carrier frequencies is necessary to control the cell balancing of the load cell carrier frequency.

条件1:负载最重载频小区的负载需要大于负载绝对门限。 Condition 1: The most frequent heavy load load load cell must be greater than an absolute threshold load.

条件2:负载最重载频小区的负载和负载最轻载频小区的负载的差值需要大于负载差值门限。 Condition 2: the cell-frequency load heaviest loaded lightest load and the load of the load cell of the frequency difference must be greater than the difference threshold load.

如果这两个条件不能同时满足,则确定选取的这两个载频小区不需要进行负载平衡控制,本次负载平衡控制完成,负载检测定时器复位。 If these conditions are not simultaneously satisfied, it is determined that the two carrier frequencies selected cell load balancing control is not required, this control is completed load balancing, load detection timer is reset.

如果这两个条件同时满足,则确定了上述选取的两个栽频小区是需要进行负载平衡控制的载频小区。 If these two conditions are met, it is determined that the above-described pilot plant selected cells requires two load cell balance control of the carrier frequency. 需要对负载最重载频小区中的移动终端用户进行异频切换。 Overload most frequent need for load cells in the inter-frequency handover for the mobile terminal user. 本发明提供的对负载最重载频小区中的移动终端用户进4亍异频切换的方法为盲切换方法,即选择负载最重载频小区中的移动终端用户,这些被选中的移动终端用户不需要进行异频测量,由移动通讯网络设备直接下发异频切换命令,通知选中的移动终端用户切换到异频小区中,从而,负载最重载频小区中的移动终端用户即使处于该载频小区的中心,也可能会被切换至负载最轻的异频小区中。 The present invention provides a load heaviest loaded in the mobile terminal user frequency cell 4 into the inter-frequency handover of a right foot blind switching method, i.e., selecting the most heavy duty load-frequency cell of a mobile terminal user, the mobile terminal user selected no need for inter-frequency measurements by the mobile communications network equipment directly applied inter-frequency handover command, the mobile terminal user handover notification to the selected inter-frequency cell, thereby, the most heavy-duty load-frequency cell in the mobile terminal user even in the carrier frequency cell center may also be switched to the lightest load inter-frequency cell. 从而能够完全实现控制异频小区的负载达到平衡的目的。 It is possible to completely control purposes inter-frequency cell load equilibrium. 本发明提供的这种盲切换方式,避免了移动终端用户为单接收才几时启用压缩模式进行异频测量而引起的高功率发射的问题。 The present invention provides such a blind switching manner, avoids the problem of a single mobile terminal user receives the compressed mode is enabled only when inter-frequency measurement caused by high power transmission.

本发明为了避免异频切换后使负载最轻载频小区的负载不会急剧加重,在 The present invention is to avoid the inter-frequency switching frequency of the load cell of the lightest load is not abruptly increased, the

第一种方法为:首先计算负载最重载频小区的负载与负载最轻载频小区的 The first method is: first calculating frequency cell load heaviest loaded load carrier lightest load cell

负载的差值,设定计算结果为Ldiff;设定负载最重载频小区中有n个处于通讯状态的移动通讯终端用户,分别占用的负载为Ll,L2,,.,Ln,在这些移动终端用户中选择负载不大于Ldiff/2的且负载最大的移动终端用户,作为异频切换的移动终端用户。 Difference in the load, the calculation result is set to Ldiff; set load heaviest loaded with n-frequency cell in the mobile communication terminal user in the communication state, respectively occupied load Ll, L2 ,,, Ln, in the movement. select a load is not greater than the end user Ldiff / maximum load and mobile terminal user 2, as the inter-frequency handover of the mobile terminal user. 将负载不大于Ldiffi/2的移动终端用户作为异频切换的移动终端用户,是为了尽可能使两个小区的负载趋于平衡,避免因移动终端用户异频切换后使负载最轻载频小区的负栽急剧加重。 The load is not greater than a mobile terminal user Ldiffi / 2 as the inter-frequency handover of a mobile terminal user, as much as possible in order to tend to balance the load of two cells, the mobile terminal user to avoid inter-frequency switching frequency of the load cell lightest negative planted a sharp increase. 将负载不大于Ldiff/2的且负载最大的移动终端用户作为异频切换的移动终端用户,最大限度的减少了异频切换的次数,高效率的实现载频小区的负载平衡控制。 The load is not greater than Ldiff / 2 and the maximum load of the mobile terminal user as an inter-frequency handover of a mobile terminal user, to minimize the number of inter-frequency handover, the carrier frequency of the high efficiency cell load balancing control.

为了更好的达到控制异频小区间负载平衡的目的,可设定切换重试次数, In order to better achieve the object of control among inter-frequency cell load balancing, the switching can be set number of retries,

试次数计次。 Try the count times. 如果对选中的移动终端用户异频切换成功,本次负载平衡控制结束。 If the mobile terminal user on the selected inter-frequency handover is successful, the end of this load balancing control. 负载检测定时器复位,并在其超时时再次检测各载频小区的负载,进行下一次的负载平衡控制。 Load detecting timer is reset, and when it detects a timeout again load of each carrier frequency of the cell, for the next load balancing control. 如果对选中的移动终端用户异频切换不成功,切换重试次数的计次值递增。 If the mobile terminal user on the selected inter-frequency handover is unsuccessful, the switching times count value is incremented by the number of retries. 判断该计次值是否大于切换重试次数,如果未大于,依照上述方法在负载不大于Ldiff/2的且负载最大的移动终端用户中重新选取其他的移动终端用户。 Determining whether the count value is greater than the number of switching times of retries, if not greater than, the load according to the above methods is not greater than Ldiff / 2 and the maximum load of the mobile terminal user to re-select another mobile terminal user. 如果大于切换重试次数,则本次负载平衡控制结束。 If the switch is greater than the number of retries, the ends of this load balancing control. 负载检测定时器复位,并在其超时时再次检测各载频小区的负载,进行下一次的负载平衡控制。 Load detecting timer is reset, and when it detects a timeout again load of each carrier frequency of the cell, for the next load balancing control. 本发明提供的该方法适用于移动通讯网络设备可以计算确定每个移动终端用户的负载的情况,如果移动通讯网络设备不能够确定每个移动终端用户的负载,那么可使用本发明提供的下面介绍的另一种选取异频切换的移动终端用户方法。 The method is applicable to the present invention is to provide a mobile communications network computing device determines for each mobile terminal user can load situation, if the mobile communication network device for each mobile terminal user is not able to determine the load, the present invention provides the following may be used to introduce another inter-frequency handover method for a mobile terminal user's selection.

第二种方法为:设定业务归一化因子门限为Kmax,设定负载最重载频小区中有n个处于通讯状态的移动通讯终端用户,分别计算确定每个移动终端用户的业务归一化因子为Kl,K2,..,Kn。 The second method is: set service normalization factor limit Kmax of the door, setting the heaviest loaded load-frequency cell has n mobile communication terminal user in the communication state, calculates for each mobile terminal user determines a normalized service factor is Kl, K2, .., Kn. 在这些移动终端用户中选择业务归一化因子不大于Kmax的且业务归一化因子最大的移动终端用户,作为异频切换的移动终端用户。 Selecting a service normalization factor is not greater than Kmax and business end-users of these mobile normalization factor largest mobile terminal user, mobile terminal users as inter-frequency handover. 将业务归一化因子不大于Kmax的移动终端用户作为异频切换的移动终端用户,是为了尽可能使两个小区的负载趋于平衡,避免因移动终端用户异频切换后使负载最轻载频小区的负载急剧加重。 Traffic normalization factor is not greater than Kmax mobile terminal user of a mobile terminal user inter-frequency handover, as much as possible in order to tend to balance the load of two cells, the mobile terminal user to avoid inter-frequency handover of the load lightest the sharp increase in load-frequency cell. 将业务归一化因子不大于Kmax的且业务归一化因子最大的移动终端用户作为异频切换的移动终端用户,最大P艮度的减少了异频切换的次数,高效率的实现了载频小区的负载平衡控制。 Traffic normalization factor is not greater than Kmax and service normalization factor as a mobile terminal user the maximum inter-frequency handover of a mobile terminal user, the maximum degree Gen P reduces the number of inter-frequency handover, to achieve a high efficiency carrier frequency the load cell balance control.

同样,为了更好的达到控制异频小区间负载平衡的目的,可设定切换重试次数,在第一次选中异频切换的移动终端用户并对其进行异频切换时,开始为切换重试次数计次。 Similarly, in order to achieve better control of the inter-frequency cell load balancing purposes, the number of retries may be set to switch, in the first inter-frequency handover is selected mobile terminal user and subjected to inter-frequency handover, the handover re-started try the count times. 如果对选中的移动终端用户异频切换成功,本次负载平衡控制结束。 If the mobile terminal user on the selected inter-frequency handover is successful, the end of this load balancing control. 负载检测定时器复位,并在其超时时再次检测各载频小区的负载, 进行下一次的负载平衡控制。 Load detecting timer is reset, and when it detects a timeout again load of each carrier frequency of the cell, for the next load balancing control. 如果对选中的移动终端用户异频切换不成功,切换重试次数的计次值递增。 If the mobile terminal user on the selected inter-frequency handover is unsuccessful, the switching times count value is incremented by the number of retries. 判断该计次值是否大于切换重试次数,如果未大于, 依照上述方法在业务归一化因子不大于Kmax的且业务归一化因子最大的移动终端用户中重新选取其他移动终端用户。 Determining whether the count value is greater than the switching times of retries, if not greater than, the method according to the above operations in the normalization factor is not greater than Kmax and service normalization factor maximum reselecting another mobile terminal user of mobile terminal users. 如果大于切换重试次数,则本次负载平衡控制结束。 If the switch is greater than the number of retries, the ends of this load balancing control. 负载检测定时器复位,并在其超时时再次检测各载频小区的负载,进行下一次的负载平衡控制。 Load detecting timer is reset, and when it detects a timeout again load of each carrier frequency of the cell, for the next load balancing control.

上述方法中的业务归一化因子表示当前业务的载干比相对于标准业务载干比的比值,也即表示当前业务相当于多少个标准业务。 The above-described method operations normalization factor that represents the current carrier to interference ratio with respect to the service carrier to interference ratio than the standard service, i.e. the number represented by the current service corresponding to service standard.

标准业务可由移动通讯网络设备选择某种速率下的业务作为标准业务。 Standard business communications network by the mobile device selecting a service at a certain rate as a standard service. example

如,移动通讯网络设备选择速率为12,2kbps的语音业务作为标准业务。 For example, the mobile device selects communication networks 12,2kbps rate voice traffic as a standard service. 设标准业务的信干比Eb/No目标值为xdB,数据速率为R^沐业务kbps;当前业务的信干比Eb/No目标值为y dB,数据速率为IU前业务kbps。 Standard set of traffic signal to interference ratio Eb / No target value xdB, the data rate is R ^ Mu kbps service; current signal to interference ratio of traffic Eb / No target value is y dB, the data rate of the forward traffic IU kbps.

因为信干比Eb/No与载干比Ec/No有如下关系成立:Eb/No = W/R x Ec/No;其中,W为信道带宽,R为数据速率,所以有: Because the signal to interference ratio Eb / No and the carrier to interference ratio Ec / No established the following relationship: Eb / No = W / R x Ec / No; wherein, W is the channel bandwidth, R is data rate, are:

(Ec/No)标准业务=(Eb/No)标准业务x 11#准业务/ W = lO^10 x Rj示准业务/ w; (Ec / No) standard operating = (Eb / No) x 11 # standard business service registration / W = lO ^ 10 x Rj shown registration service / w;

(Ec/No )当前业务=(Eb/No )当前业务x R当前业务/ w = 10y/1Q x R当前业务/ w; (Ec / No) of the current service = (Eb / No) x R current traffic current service / w = 10y / 1Q x R current service / w;

业务归一化因子K则为: Business normalization factor K was:

K= (Ec/No)当前业务/ (Ec/No)标准业务=10(y'x)/1() x R当前业务/R标准业务; 如果考虑当前业务的激活因子,则业务归一化因子表示式为: K = (Ec / No) of the current service / (Ec / No) standard operating = 10 (y'x) / 1 () x R of the current service / R standard service; consideration factors currently active service, the service normalized factor represented by the formula:

K=10(yX)/K) x pxR当前业务/R标准业务; K = 10 (yX) / K) x pxR current service / R standard service;

其中P为激活因子,这是由于语音激活检测技术的使用、数据业务因业务源的变化等原因,会导致信道功率的不连续发射。 Wherein P is a activating factor, due to the use of the voice activity detection technique, data traffic reasons like changes in traffic sources, will lead to discontinuous transmission channel power. 我们将信道上发射功率的时间与信道占用时间的比称作信道的激活因子。 We channel transmit power and time than the channel occupation time called a channel activators.

由于一个移动终端用户通信时可能占用多个传输信道,因此这个用户的业务归一化因子为所有信道的归一化因子之和。 Since the plurality of transmission channels may occupy when a mobile communication terminal user, so that user traffic normalization factor for all channels and the factor of normalization.

下面结合附图2对本发明作进一步详细说明。 Two pairs of the present invention is described in further detail below reference binding.

设定负载绝对门限为Tabs。 Absolute threshold is set to load Tabs. lute,负载差值门限为Trelative,切换重试次数为3。 lute, the difference threshold is the load Trelative, switching to 3 retries. 在图2中,移动通讯网络设备在负载检测定时器超时时,检测各载频小区A1、 A2、 Bl、 B2、 Cl、 C2的负载,通过比较确定负载最重载频小区为Al ,负载 In FIG. 2, the mobile communication network device when the load detection timer expires, detecting, A2, Bl load of each carrier frequency cells A1, B2, Cl, C2, the load is determined by comparing the most frequent heavy load cell is Al, load

最轻载频小区为A2。 The carrier frequency is the lightest cell A2. 设定载频小区Al的负载大于负载绝对门限Tabs。 Setting the carrier frequency load greater than the load cell Al absolute threshold Tabs. une并且载频小区Al与载频小区A2的负载差值大于负载差值门限TreMve,则移动通讯网 une Al cell and carrier frequency carrier frequency difference in the load cell A2 is greater than the load difference threshold TreMve, the mobile communication network

络设备确定对载频小区Al和载频小区A2的负载进行负载平衡控制。 Network device determines the carrier frequency of the load cells Al and A2 of the carrier frequency load cell balance control. 开始为切换重试次数计次。 Began to count retries switching times.

移动通讯网络设备在载频小区Al的处于通信状态的移动终端用户中选取需要异频切换的移动终端用户,选取的移动终端用户必须满足其负载在不大于 Mobile communications network equipment need to select the different-frequency handover of a mobile terminal user in the mobile terminal user in communication carrier frequency in cell Al, the selected mobile terminal user must meet the load is not greater than

(载频小区Al的负载-载频小区A2的负栽)/2负载的移动终端用户中的负载最大,逸中的移动终端用户不必对异频邻近小区A2、'B2、 C2进行异频测量, 网络设备直接下发硬切换命令通知选中的移动终端用户切换到异频小区A2 (Al load cell carrier frequency - the carrier frequency plant cell A2 negative) of a mobile terminal user load / maximum load 2, the mobile terminal user having to Yi inter-frequency neighboring cells A2, 'B2, C2 for inter-frequency measurement , the network switching device is directly applied a hard handoff command to the mobile terminal user is notified of the selected inter-frequency cell A2

中。 in.

移动通讯网络设备判断异频切换是否成功,如杲异频切换成功,结束本次负载平衡控制,将负载检测定时器复位。 Mobile communications network equipment determines whether the successful inter-frequency handover, such as inter-frequency handover is successful Gao, ends the load balance control, the load detection timer is reset. 如果异频切换不成功,为切换重试次数的计次值递增,依照上述方法重新选取其他异频切换的移动终端用户。 If the inter-frequency handover is unsuccessful, the count value of the switching times of retries is incremented, the mobile terminal user to re-select another inter-frequency handover in accordance with the method described above. 当切换重试次数的计次值为4时,结束本次负载平衡控制,将负载检测定时器复位。 When the count of times the switching retries is 4, it ends the load balance control, the load detection timer is reset.

本发明提供的通讯系统中控制负载平衡的实现方法流程图如附图3所示。 Communication system of the present invention provides a control method of load balancing to achieve a flowchart as shown in the drawings 3. 在图3中,步骤300,开始本发明的负载平衡控制。 In FIG. 3, step 300, starts the load balancing control of the present invention. 到步骤310,设置负载绝对门限,负载差值门限,切换重试次数,负载检测定时器复位。 To step 310 to set an absolute threshold load, the load difference threshold, switching the number of retries, the load detecting timer is reset. 到步骤320, 检测负载检测定时器,到步骤330,判断负载检测定时器是否超时,如果不超时,到步骤320,继续检测负载检测定时器。 To step 320, a load detecting timer is detected, the step 330 determines the load detection timer expires, if the timeout is not, to step 320 to continue detecting the load detection timer. 在步骤330,如果负载检测定时器超时,到步骤340,移动通讯网络设备^r测各载频小区的负载,并确定各载频小区中负载最重载频小区和负载最轻载频小区。 In step 330, if the load detecting timer times out, to step 340, each carrying a mobile communications network equipment ^ r load carrier frequency measurement for each cell, and determine frequency cell load and the heaviest loaded frequency cell lightest load cell carrier frequency.

到步骤350,判断负载最重载频小区的负载是否大于负载绝对门限,如果不大于负载绝对门限,说明该负载最重载频小区的负载不需要进4亍负载平衡控制,到步骤395,将负载检测定时器复位,到步骤320。 To step 350, the most frequent heavy load cell load determining whether the load is greater than an absolute threshold load, if the load is not greater than an absolute threshold, indicating that the load is heaviest loaded frequency cell does not need to load into the right foot load balance control 4, to step 395, the load detecting timer is reset, to step 320.

在步骤350,如果负载最重载频小区的负载大于负载绝对门限,说明该负载最重载频小区的负载已达到了设定的负载沉重的程度,该负载最重载频小区的负载需要进行负载平衡控制。 In step 350, if the load of the most heavy-duty load-frequency load cell is greater than the absolute threshold, indicating that the most heavy-duty load-frequency cell load heavy load has reached the degree of the set, the most heavy-duty load-frequency cell load is required load balancing control. 到步骤360,判断负载最重载频小区的负载和负载最轻载频小区的负载的差值是否大于负载差值门限,如果该差值不大于负载差值门限,则不能避免由于载频小区的负栽小范围内的波动造成不同载频之间的负载来回调整的现象,因此没有必要将其他载频小区的移动终端用户切换 Whether to step 360, the load is determined overloaded most frequent load cell and load cell lightest load frequency difference is greater than the load threshold difference, if the difference is not larger than the difference threshold load, the cell can not be avoided due to the carrier frequency negative fluctuations caused by small-scale plant load between the different carrier frequencies to adjust back and forth and, therefore, it is not necessary to move the end user other carrier-frequency cell handover

至该载频小区中,到步骤395,将负载检测定时器复位,到步骤320。 Cells to the carrier frequency in the step 395, the load detection timer is reset, to step 320.

在步骤360,如果该差值大于负载差值门限,则可以将其他载频小区的移动终端用户切换至该载频小区中,到步骤370,开始对确定的负载最重、负载最轻载频小区中的负载进行负载平衡控制,开始为负载切换次数计次。 In step 360, if the difference is greater than a difference threshold load, the end user can move the other carrier frequency cell switching to the carrier cell, step 370, to determine the start of the heaviest loads, the lightest load carrier the load cell balance control load, switching the load to start the count times.

到步骤380,根据上述介绍的处于通讯状态的移动终端用户的负载或业务归一化因子的方法确定需要进行异频切换的移动终端用户,到步骤390,对该确定的移动终端用户进行异频切换,将其切换至负载最轻载频小区中。 To step 380, method or traffic load in the communication state of the mobile terminal user the presentation normalization factor determining the need for inter-frequency handover of a mobile terminal user, to step 390, determine the inter-frequency mobile terminal user switch, which switches the carrier frequency to the lightest load cell.

到步骤391,判断异频切换是否成功,如果异频切换未成功,到步骤392, 切换重试次数的计次值递增l,到步骤393,判断该计次值是否大于切换重试次数,如果大于切换重试次数,到步骤394,本次负载平衡控制结束,到步骤395, 将负载检测定时器复位,到步骤320。 To step 391, determining inter-frequency handover is successful, if the inter-frequency handover is unsuccessful, the step 392, the switching and metering values ​​retries is incremented L, to step 393, determining whether the total time value is greater than the number of retries handover, if greater than the switching retries to step 394, this end load balance control to step 395, the load detection timer is reset, to step 320.

在步骤393,如果不大于切换重试次数,到步骤380, 一艮据上述介绍的处于通讯状态的移动终端用户的负载或业务归一化因子的方法再次确定需要进行异频切换的其他移动终端用户。 In step 393, if the number of retries is not greater than the switching, to step 380, the method according to a Burgundy or traffic load in the communication state of the mobile terminal user the presentation normalization factor is determined again require additional inter-frequency handover of the mobile terminal user.

在步骤391,如果异频切换成功,到步骤394,本次负载平衡控制结束,到步骤395,将负载检测定时器复位,到步骤320。 In step 391, if the inter-frequency handover is successful, to step 394, this end load balance control to step 395, the load detection timer is reset, to step 320.

本发明还提供一种控制负载平衡的装置,如附图4所示,该装置包括:负载检测模块410,确定控制负载平衡模块420,负载平衡才莫块430。 The present invention further provides an apparatus for controlling a load balancing, as illustrated in Figure 4, the apparatus comprising: a load detection module 410, the load balancing control module 420 determines, before the load balancing block 430 mo. 负载平衡才莫块430的功能由确定移动终端用户子模块43i ,异频切换子^f莫块432实现。 Load balancing function block 430 Mo was determined by the mobile terminal user sub-module 43i, an inter-frequency handover sub-block 432 ^ f Mo achieved.

负载检测模块410根据负载检测定时器定时检测各载频小区的负载,并将检测到的各载频小区的负载传输至确定控制负载平衡模块420。 Load detecting the load detection module 410 detects the timer cell load of each carrier frequency, and transmitting the detected load of each carrier frequency to determine the cell load balancing control module 420.

确定控制负载平衡模块420接收负载检测模块410传输来的各载频小区的负载,并根据各载频小区的负载确定负载最重载频小区和负载最轻载频小区,同时根据预定的负栽绝对门限和负载差值门限确定负载最重载频小区和负栽最轻载频小区是否为需要进行负载平衡控制的载频小区,并通知确定移动终端用户子模块431需要进行负载平衡控制的载频小区,开始为切换重试次数计次。 Load balancing control module determines the load detection module 420 receives the load of each carrier frequency transmitted from cell 410, and determines the load cell and the most frequent overloading the lightest load cell according to the load of each carrier frequency of the carrier frequency of the cell, while the plant in accordance with a predetermined negative the absolute difference in the load threshold and the load threshold to determine the most frequent heavy load cell and a negative carrier frequency lightest plant cell is a need for load cell balance control of the carrier frequency, and notifies the mobile terminal user sub-module 431 determines the need for load balancing control of the carrier frequency cell, the handover start time count retries. 如果检测到的负载最重、负载最轻载频小区不需要进行负载平衡控制,通知负 If the detected heaviest loads, the lightest load carrier frequency does not need to load cell balance control, a negative notice

载检测模块410负载检测定时器复位。 Load detecting module 410 detects a load timer is reset.

确定移动终端用户子模块431在所述需要进行负载平衡控制的载频小区中,根据上述介绍的处于通讯状态的移动终端用户的负载或业务归一化因子确定需要进行异频切换的移动终端用户,并通知异频切换子4莫块432需要进行异频切换的移动终端用户。 Mobile terminal user sub-module 431 determines the need for carrier-frequency cell load balance control in accordance with a load or traffic in the communication state of the mobile terminal user the presentation normalization factor determining the need for inter-frequency handover of a mobile terminal user , inter-frequency handover and notifies the sub-blocks 432 4 Mo required inter-frequency handover of a mobile terminal user.

异频切换子模块432对确定移动终端用户子模块431通知的需要进行异频切换的移动终端用户进行异频切换。 Inter-frequency handover sub-module 432 determines the need for a mobile terminal user 431 notifies the mobile terminal user sub-module inter-frequency handover is inter-frequency handover. 当移动终端用户异频切换不成功时,通知确定控制负载平衡模块420中的切换重试次数的计次值递增l ,确定控制负载平衡模块420判断计次值是否大于切换重试次数,如果大于切换重试次数,确定控制负载平衡模块420通知负载检测模块410负载检测定时器复位。 When the mobile terminal user inter-frequency handover is not successful, notifies the control load balancing module determines the count value times the number of retries is incremented L switch 420, control determines whether the load balancing module 420 determines whether the count value is greater than the switching times of retries, if more than retries handover, the load balancing control module 420 to determine the load detection module 410 notifies the load detection timer is reset. 如果不大于切换重试次数,确定控制负载平衡模块420通知确定移动终端用户子模块431在所述需要进行负载平衡控制的载频小区中,根据上述介绍的处于通讯状态的移动终端用户的负载或业务归一化因子再次确定其他需要进行异频切换的移动终端用户。 If the number of retries is not greater than the switching, the load balancing control module 420 determines the notification module 431 determines that the mobile terminal user sub-carrier frequency of the required load cell balance control, the mobile terminal user in accordance with the communication state of the load or presentation business normalization factor is determined again require additional inter-frequency handover of a mobile terminal user.

虽然通过实施例描绘了本发明,本领域普通技术人员知道,本发明有许多变形和变化而不脱离本发明的精神,希望所附的权利要求包括这些变形和变化。 Although the present invention is depicted by way of example, those of ordinary skill in the art know that there are many modifications and variations of the present invention without departing from the spirit of the invention, it intended that the appended claims cover such modifications and variations.

Claims (9)

  1. 1、一种通讯系统中控制负载平衡的实现方法,其特征在于包括:a、定时检测各载频小区的负载;b、根据检测结果确定负载最重和负载最轻载频小区,在负载最重载频小区的负载大于预定负载绝对门限且负载最重和负载最轻载频小区的负载之差大于预定负载差值门限时,将所述负载最重和负载最轻载频小区确定为需要控制负载平衡的载频小区;c、通过对移动终端用户进行异频切换对所述需要控制负载平衡的载频小区进行负载平衡控制。 1. A communication control system implemented method for load balancing, comprising: a, the timing of detecting the load of each carrier frequency cells; B, and determining the lightest load is heaviest load cell according to the detection result of the carrier frequency, the load most overload frequency cell load is greater than a predetermined threshold and absolute load heaviest and lightest load of the frequency difference between the load cell load is greater than a predetermined difference threshold, the heaviest and the lightest load is determined as the carrier frequency cells need load balancing control cell carrier frequency; c, by the mobile terminal user inter-frequency handover for load balancing control of the need to control the carrier frequency of a cell load balancing.
  2. 2、 如权利要求1所述的一种通讯系统中控制负载平衡的实现方法,其特征在于所述的步骤a包括:根据负载检测定时器定时检测各载频小区的负载。 2. A method as claimed in control of load balancing to achieve a communication system according to claim 1, wherein said step a comprises: the load detection timer timing detector cell load of each carrier frequency.
  3. 3、 如权利要求1所述的一种通讯系统中控制负载平衡的实现方法,其特征在于所述的步骤b包括:根据所述各载频小区的负载检测结果确定负载最重和负载最轻载频小区;根据预定负载绝对门限、预定负载差值门限判断负载最重和负载最轻载频小区是否为需要控制负载平衡的载频小区;如果负载最重载频小区的负载大于所述预定负载绝对门限且负载最重和负载最轻载频小区的负载之差大于所述预定负载差值门限,所述负载最重和负载最轻载频小区为需要控制负载平衡的载频小区;否则,所述负载最重载频小区和负载最轻载频小区为不需要控制负载平衡的载频小区。 3. A method as claimed in control load balancing to achieve a communication system according to claim 1, wherein said step b comprises: determining heaviest load according to the load and the detection result of the carrier frequency of each cell lightest carrier-frequency cell; absolute load in accordance with a predetermined threshold, the predetermined difference threshold is determined whether the load heaviest and lightest load cell needs to be controlled carrier frequency carrier frequency cell load balancing; most overloaded if the load cell frequency greater than the predetermined load absolute load threshold and the load is heaviest and the lightest load of the frequency difference between the load cell load is greater than the predetermined difference threshold, the heaviest and the lightest load cell needs to be controlled carrier frequency carrier frequency load balancing cells; otherwise, , most of the load and the lightest load cell overload-frequency cells is necessary to control the carrier frequency of the carrier frequency cell load balancing.
  4. 4、 如权利要求3所述的一种通讯系统中控制负载平衡的实现方法,其特征在于所述的步骤c包括:Cl、开始为切换重试次数计次;C2、确定负载最重载频小区中需要异频切换到负载最轻载频小区中的移动终端用户;c3、对所述移动终端用户进行异频切换;c4、判断所述异频切换是否成功;如果异频切换成功,结束本次负载平衡控制,负载检测定时器复位;如果异频切换不成功,切换重试次数的计次值递增,判断切换重试次数的计次值是否大于切换重试次数;如果不大于切换重试次数,返回步骤c2;如果大于切换重试次数,结束本次负载平衡控制,负载4全测定时器复位。 4. A method as claimed in control load balancing to achieve a communication system according to claim 3, wherein said step c comprises: Cl, starts to count the number of switching times of retries; C2, the load determining the most frequent overloading inter-frequency cells need to switch to the lightest load carrier frequency in the cell the mobile terminal user; C3, the inter-frequency handover for the mobile terminal user; C4, determines the inter-frequency handover is successful; if the inter-frequency handover is successful, the end of the load balancing control, load detection timer is reset; if the inter-frequency handover is unsuccessful, the switching count value times the number of retries is incremented, it is determined whether the switch count value of the number of retries times greater than the switching retries; if not greater than the switching weight number of retries, processing returns to step C2; retry if greater than the switching frequency and ends the load balance control, full load sensing timer 4 resets.
  5. 5、 如权利要求4所述的一种通讯系统中控制负载平衡的实现方法,其特征在于所述的步骤c2包括:获取负载最重载频小区中各通讯状态的移动终端用户的负载;获取负载最重载频小区的负载与负载最轻载频小区的负载差值的平均数;将负载不大于所述平均数的移动终端用户中负载最大的移动终端用户作为需要进行异频切换的移动终端用户。 5. The method of claim balance achieved in the communication control system according to the load, characterized in that said step c2 comprises: obtaining a mobile terminal user loads the most heavy duty load-frequency communication status of each cell; Get Mean load difference frequency cell load heaviest loaded lightest load carrier and the load cell; load not greater than the average maximum load in a mobile terminal user as the movement of the mobile terminal user is required inter-frequency handover end-user.
  6. 6、 如权利要求4所述的一种通讯系统中控制负载平衡的实现方法,其特征在于所述的步骤c2包括:获取负载最重载频小区中各通讯状态的移动终端用户的业务归一化因子;将业务归一化因子不大于业务归一化因子门限的移动终端用户中业务归一化因子最大的移动终端用户作为需要进行异频切换的移动终端用户。 6. A method as claimed in control load balancing to achieve a communication system according to the claim 4, wherein said step c2 comprises: obtaining a mobile terminal user loads the most frequent heavy load communication status of each cell of a service into a factor; traffic normalization factor is not greater than the normalization factor service threshold in a mobile terminal user traffic normalization factor as a mobile terminal user the maximum required inter-frequency handover of a mobile terminal user.
  7. 7、 如权利要求6所述的一种通讯系统中控制负载平衡的实现方法,其特征在于所述的移动终端用户的业务归一化因子K为:K = io (y—x)/10 xpx R当前业务/ &示准业务;其中:p为激活因子;x为标准业务信干比的目标值;y为当前业务信干比的目标值;R^业务为当前业务的数据速率;R标准业务为标准业务的数据速率。 7. A method as claimed in control load balancing to achieve a communication system according to claim 6, characterized in that the mobile terminal user traffic normalization factor K is: K = io (y-x) / 10 xpx R current service / service & quasi shown; wherein: p is activator; x is standard operating SIR target ratio; Y is a target SIR of the current service; R ^ is a service data rate of the current service; R standard business data rate standard services.
  8. 8、 一种通讯系统中控制负载平衡的装置,其特征在于包括:负载检测模块:定时检测各载频小区的负载,并将检测到的各载频小区的负载传输至确定控制负载平4lf模块;确定控制负载平衡模块:根据所述负载检测模块传输来的各载频小区的负载确定负载最重和负载最轻载频小区,在负载最重载频小区的负载大于预定负载绝对门限且负载最重和负载最轻载频小区的负载之差大于预定负载差值门限时,将所述负载最重和负载最轻载频小区确定为需要控制负载平衡的载频小区,并通知负载平#^莫块;负载平衡模块:根据所述确定控制负载平衡模块通知的信息对需要进行负载平衡控制的载频小区中的移动终端用户进行异频切换,以进行负载平衡控制。 8, the load balancing control device communication system, comprising: a load detection module: a timing detection cell load of each carrier frequency, and the detected load of the transmission carrier frequency of each of the control cells to determine the load level module 4lf ; determining the load balancing control module: determining heaviest and lightest load carrier frequency cell, in most heavy duty load-frequency cell load is greater than a predetermined load and the load absolute threshold detection module according to the load of the load transmission carrier frequency to each cell the heaviest and the lightest load carrier frequency difference between the load cell load is greater than a predetermined difference threshold, the heaviest and the lightest load is determined as the carrier frequency cells need to control the carrier frequency of a cell load balancing, and notifies the load-# ^ MO block; load balancing module: the control information according to the determined load balancing module is required to notify the mobile terminal user load cell balance control the carrier frequency in the inter-frequency handover for load balancing control.
  9. 9、 如权利要求8所述的一种通讯系统中控制负载平衡的装置,其特征在于所述的负载平衡模块包括:确定移动终端用户子模块:确定所述需要进行负载平衡控制的载频小区中需要进行异频切换的移动终端用户,并通知异频切换子模块需要进行异频切换的移动终端用户;异频切换子模块:对所述确定移动终端用户子模块通知的需要进行异频切换的移动终端用户进行异频切换。 9. A communication system as claimed in claim 8 controls the load balancing apparatus claims, wherein the load balancing module comprises: determining a mobile terminal user sub-module: determines the required load cell balance control of the carrier frequency mobile terminal user is required inter-frequency handover, an inter-frequency handover and notifies the mobile terminal user sub-module needs inter-frequency handover; inter-frequency switching submodule: the sub-module determines that the mobile terminal user performs inter-frequency handover notification the inter-frequency handover for the mobile terminal user.
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