CN100584072C - Channel quality indication adjusting method and a base station node - Google Patents

Channel quality indication adjusting method and a base station node Download PDF

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CN100584072C
CN100584072C CN 200710084640 CN200710084640A CN100584072C CN 100584072 C CN100584072 C CN 100584072C CN 200710084640 CN200710084640 CN 200710084640 CN 200710084640 A CN200710084640 A CN 200710084640A CN 100584072 C CN100584072 C CN 100584072C
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ibler
cqi
target
adjustment
value
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CN101018387A (en
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彭小勇
胡自明
郭房富
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华为技术有限公司
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Abstract

The disclosed adjustment method on channel quality indication for HSDPA system comprises: according to business type, selecting relative CQI adjustment algorithm to adjust reported CQI; to non-delay sensitive business, selecting CQI algorithm based on IBLER, while selecting CQI algorithm based on RBLER for delay sensitive business. This invention can adjust IBLER target value according to load condition.

Description

信道质量指示调整方法和基站节点 Channel quality indication adjusting method and a base station node

技术领域 FIELD

本发明涉及无线通信领域,特别涉及高速下行分组接入(High Speed Downlink Packet Access,筒称"HSDPA")系统中信道质量指示(Channel Quality Indicator,简称"CQI")的调整技.术。 The present invention relates to wireless communications, and more particularly relates to high-speed downlink packet access (High Speed ​​Downlink Packet Access, called cylindrical "HSDPA") systems the channel quality indicator (Channel Quality Indicator, referred to as "CQI") is adjusted TECHNOLOGY. Cytometry.

背景技术 Background technique

HSDPA是第三代合作伙伴项目(3rd Generation Partnership Project,简称"3GPP,, )R5版本的重要特性,通过自适应调制和编码(Adaptive Modulation andtoding,简称"AMC")、混合重传(Hybrid Automatic-R印eat-Request, 简称"HARQ"),以及基站节点(Node Base Station,简称"Node B")的快速调度等一系列关键技术,实现了下行的高速数据传输。 HSDPA is the third Generation Partnership Project (3rd Generation Partnership Project, referred to as "3GPP ,,) key features R5 version, adaptive modulation and coding (Adaptive Modulation andtoding, referred to as" AMC "), hybrid ARQ (Hybrid Automatic- R series of key technologies printed eat-Request, referred to as "HARQ"), and a base station node (node ​​base Station, referred to as "node B") fast scheduling, to achieve a high-speed downlink data transmission.

在HSDPA的数据传输过程中,用户设备(User Equipment,简称"UE") 接收并解调数据,把数据是否被正确接收的信息通知给网络侧的发送方,如果数据被正确接收,发送ACK指示;如果数据接收失败,则发送NACK指示。 In HSDPA data transmission, the user equipment (User Equipment, referred to as "UE") receives and demodulates the data, whether the data is correctly received information to the network side notifies the sender, if the data was received properly, transmits ACK indicating ; If the data reception fails, it sends NACK indication. 新数据中未被正确接收而返回NACK的比例称为IBLER(初传误块率)。 The new data is not correctly received and returns a NACK ratio referred IBLER (block error rate of the initial transmission). 当发送方收到NACK指示时,在下一个给该用户调度的时刻就可以把该数据重复发送给该UE,直到UE正确接收该数据并返回ACK或该次传输超过最大重传次数。 When the sender receives NACK indication, the next can be sent to the user to repeat the scheduled time of the data to the UE, the UE receives the data until the correct and ACK is returned or the transmission times exceeds the maximum number of retransmissions. 超过最大重传次数仍然未被正确接收的数据的比例称为RBLER (残留误块率)。 The proportion of retransmissions exceeds the maximum number of still not been correctly received data is called RBLER (residual block error rate).

HSDPA中用CQI表示UE接收的信道环境质量和UE的解调能力。 HSDPA CQI indicates the channel environment by UE reception quality of UE and demodulating capability. 在HSDPA的收发过程中,UE把当前所处的信道环境质量以CQI值的方式上报给发送方,发送方则根据信道环境的好坏来调整发送数据的大小,并采用合适的数据调制方式。 Transceiver process of HSDPA, the UE the current which the channel quality of the environment in a manner CQI value reported to the sender, the sender is to adjust the size of transmission data according to quality of channel environment, and using a suitable data modulation scheme. 但从本发明发明人目前的测试来看,由于3GPP协议对终端CQI测量性能要求较低,加上终端实现上的因素,实际系统中UE上报的CQI已经不能完全真实反映实际的信道环境质量。 However, the present inventors tested, due to the low CQI measurement 3GPP protocol requires the terminal performance, coupled with a terminal implemented factors, the actual system CQI reported by the UE can not completely true actual channel environment reflect quality. 不同的UE、不同的CQI 区间和不同的无线环境,NodeB根据UE上报CQI进行调度所产生的旧LER 变化很大。 Old large LER different UE changes, different CQI intervals and different radio environments, NodeB the UE reports CQI according to the generated schedule. 另外,由于通过分析、仿真和实验室验证,IBLER大小的变化对用户吞吐量影响很大,因此NodeB端有必要对上报CQI进行调整,获得与实际无线环境更适配的信道质量指示,从而获得更大的性能增益。 Further, since the verified by analysis, simulation and laboratory changes IBLER size impact on user throughput large, and therefore it is necessary to end NodeB reported CQI adjusted to obtain a channel quality indication and the actual wireless environment is more adapted to obtain greater performance gains.

现有CQI调整算法如下: Prior CQI adjustment algorithm is as follows:

首先,设置一个初传误块率IBLER目标值; First, set a initial transmission IBLER target block error rate;

其次,根据NodeB收到的ACK、 NACK的信息测量出实际的IBLER; Secondly, according to the received ACK NodeB, the NACK information measured actual IBLER;

之后,根据IBLER测量值和IBLER目标值的差值对CQI进行调整。 Thereafter, the difference between the measured value and IBLER IBLER adjust the CQI target. 如果IBLER测量值大于IBLER目标值,则对上报的CQI进行一定程度的下调, 如果IBLER测量值小于IBLER目标值,则对上^1的CQI进行一定程度的上调,根据调整后的CQI来确定发送数据的大小,并采用合适的数据调制方式。 If the measured value is greater than IBLER IBLER the target, then the reported CQI down to some extent, if the measured value is less than IBLER IBLER target value, on the CQI ^ 1 up to some extent, be determined according to the adjusted CQI transmission size of the data, and using a suitable data modulation scheme.

然而,本发明的发明人发现该方式存在以下几个缺点:首先,由于对于如分组语音(Voice over IP,简称"VoIP")等时延敏感类业务而言,为了保证传输速率、减少传输时延,其最大重传次数通常较少(一般不能超过2 次),允许存在一定的残留误块率RBLER,只要将RBLER控制在可接受的范围内即可,但是通过IBLER来对CQI进行调整,在限制最大重传次数为1 ~ 2次的前提下纟艮难控制RBLER的范围,无法保i正业务的RBLER在可以接受的范围,与该类型业务期望达到的目标相违背。 First, as for since voice packets (Voice over IP, referred to as "VoIP") and other delay-sensitive class of service, in order to ensure the transmission rate, reduce the transmission: However, the present inventors found that in this way there are several drawbacks extension, the maximum number of retransmissions is typically small (generally not more than 2), allow certain RBLER residual block error rate, as long as the RBLER controlled within an acceptable range can, but to adjust the CQI IBLER, Gen Si in refractory RBLER range limiting the maximum number of retransmissions is 1 to 2 times the premise can not guarantee service RBLER i n the acceptable range, contrary to the type of service desired goal.

其次,现有技术无法设置一个合理的IBLER目标值,同时适应在不同环境下对CQI进行调整。 Secondly, the prior art can not set a reasonable target IBLER, while adapting to the CQI adjustment in different environments. 如果IBLER目标值设置得较高,如设为10%,则当小区负栽很低、功率有剩余的时候,使用该IBLER目标值调整CQI会使得单个UE的传输速率降低10%;如果IBLER目标值设置得较低,例如1%,则当小区负载很高、功率没有剩余的时候,使用该IBLER目标值调整CQI 会使得小区的吞吐率下降。 If IBLER target value is set higher, such as to 10%, when the plant cell negative low, there is surplus power when using the CQI IBLER target adjustment will make a single UE transmission rate reduced by 10%; if the target IBLER value is set too low, for example 1%, then when the cell load is high, when the remaining power is not using the CQI target adjustment IBLER cell will drop so that the throughput.

发明内容 SUMMARY

本发明实施方式要解决的主要技术问题是提供一种信道质量指示调整方法和基站节点,使得HSDPA系统吞吐率得以提高。 Embodiments of the invention The main technical problem to be solved is to provide a method for adjusting a channel quality indication and a base station node, such that the system throughput is improved HSDPA.

为解决上述技术问题,本发明的实施方式提供了一种HSDPA系统中CQI 调整方法,包括以下步骤: To solve the above problems, embodiments of the present invention provides a method for adjusting the CQI in the HSDPA system, comprising the steps of:

基站节点收到用户设备上报的HSDPA业务的信道质量指示CQI,根据该业务的业务类型选择相应的调整算法对上报的CQI进行调整; The base station reported by the user equipment node receives the HSDPA service channel quality indicator CQI, select the appropriate adjustment algorithm according to the service type of the service on the report of the CQI adjustment;

其中,如果业务类型为非时延敏感类型业务,则基站节点根据初传误块率IBLER测量值和IBLER目标值,对CQI的调整变量进行增大或减小,将用户设备上报的CQI加上所述调整变量的值作为调整后的CQI;如果所述业务类型为时延敏感类型业务,则所述基站节点根据残留误块率RBLER测量值和RBLER目标值,对CQI的调整变量进行增大或减小,将所述用户设备上报的CQI加上所述调整变量的值作为调整后的CQI。 Wherein, if the service type is non-delay-sensitive traffic types, the base station node according to the block error rate of the initial transmission and IBLER IBLER measurement target of the adjustment variable is increased or decreased CQI, CQI reported by the user equipment plus the adjustment value of the variable as adjusted CQI; and if the service type is delay-sensitive traffic types, the base station node according to the residual block error rate measurements and RBLER RBLER target of the adjustment variable is increased CQI or decreasing the CQI reported by the user equipment, adding the adjustment value of the variable as adjusted CQI.

本发明的实施方式还提供了一种基站节点,包括: Embodiments of the invention also provides a base station node, comprising:

接收单元,用于接收用户设备上报的HSDPA业务的信道质量指示CQI; Receiving means for receiving channel quality reported by a user equipment indicating the CQI HSDPA service;

选择单元,用于根据业务的业务类型选择对应的调整算法,如果所述业务的业务类型是非时延敏感类型,则选择单元所选的调整算法是根据初传误块率IBLER测量值和IBLER目标值对CQI的调整变量进行增大或减小;如果所述业务的业务类型是时延敏感类型,则所述选择单元所选的调整算法是根据残留误块率RBLER测量值和RBLER目标值对CQI的调整变量进行增大或减小; Selecting means for selecting a corresponding service type of the service according to the adjustment algorithm, if the service type is non-delay-sensitive types of the services, the selected adjustment algorithm selecting unit is IBLER rate measurements and IBLER The initial transmission target block error CQI value adjustment variable will be increased or decreased; if the service type is delay-sensitive traffic type, the adjustment algorithm of the cells of the selected block error rate is selected RBLER measurement value and the target value from the residual RBLER CQI adjustment variables increased or decreased;

CQI调整单元,用于根据选择单元所选的调整算法对接收单元上报的CQI进行调整。 CQI adjustment unit configured to adjust the CQI reported by the receiving unit in accordance with the selected adjustment algorithm selection unit.

本发明实施方式与现有技术相比,主要效果在于: Embodiments of the invention compared with the prior art, the main effect is that:

根据业务类型选择相应的CQI调整算法对上报的CQI进行调整,可以使CQI调整算法更好地适应业务的特点,提高CQI调整算法的性能,使其满足不同业务的QoS需求,提高HSDPA系统的吞吐率。 Select the CQI adjustment algorithm according to the service type of the reported CQI adjusted, the CQI adjustment algorithm can be made to better adapt to the characteristics of the business, to improve the performance of the CQI adjustment algorithm so as to satisfy QoS requirements of different services, improved system throughput of HSDPA rate.

对非时延^:感类业务选4奪基于IBLER的CQI调整算法,可以将初传成功率控制在合理范围,从而有效减少重传次数,提高HSDPA系统的吞吐率。 ^ Non-delay: 4 selected from the class of business sense wins based on the CQI adjustment algorithm IBLER, the success rate of the initial transmission may be controlled in a reasonable range, thus effectively reducing the number of retransmissions and improve the throughput of the HSDPA system. 对时延敏感类业务选才奪基于RBLER的CQI调整算法,可以在限制最大重传次数(如限制在1~2次)的前提将RBLER控制在可以接受的范围,基于RBLER调整CQI能比基于IBLER调整CQI更好地满足时延和丢包率的QoS 需求。 Delay-sensitive traffic class was selected based on the CQI adjustment algorithm RBLER CAPTURE may limit the maximum number of retransmissions (e.g., limited to 1 or 2 times) on the premise of the control RBLER acceptable range, based on the adjusted CQI can be compared based RBLER IBLER CQI adjusted to better meet the needs of QoS latency and packet loss rate.

可以根据不同的负载情况来调整IBLER目标值,在HSDPA功率占用率较高可以将IBLER目标值设得高一些,在HSDPA功率占用率较低时可以将IBLER目标值设得低一些,相对于设置固定的IBLER目标值能更好的适应负载情况,提高了吞吐率。 It can be adjusted according to different load conditions IBLER target value, the high occupancy rate HSDPA power IBLER target may be set too higher, at lower power HSDPA IBLER target occupancy rate may be set too low, with respect to the set IBLER fixed target to better adapt to the load and improve throughput.

附图说明 BRIEF DESCRIPTION

图1是根据本发明第一实施方式的HSDPA系统中CQI调整方法流程图; 图2是根据本发明第二实施方式的HSDPA系统中CQI调整方法流程图; 图3是根据本发明第三实施方式的HSDPA系统中CQI调整方法流程图; 图4是根据本发明第四实施方式的基站节点结构示意图。 FIG 1 is a flowchart illustrating a first embodiment according to the HSDPA system in the embodiment of the present invention, the CQI adjustment method; FIG. 2 is a flowchart of a method according to the adjustment of the HSDPA system of the second embodiment of the present invention for the CQI; FIG. 3 is a third embodiment of the present invention the method for adjusting CQI in HSDPA system flowchart; FIG. 4 is a diagram showing the structure of a base station node according to a fourth embodiment of the present invention. 具体实施方式 Detailed ways

为使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明作进一步地详细描述。 To make the objectives, technical solutions, and advantages of the present invention will become apparent in conjunction with the accompanying drawings below of the present invention will be described in further detail.

本发明第一实施方式涉及一种HSDPA系统中CQI调整方法,如图l所示。 A first embodiment of the present invention relates to a method for adjusting CQI in HSDPA system, as shown in Figure l.

在步骤110中,NodeB收到UE上报的HSDPA业务的CQI,根据该HSDPA业务的业务类型选择CQI调整算法,如果该业务是非时延敏感类型业务,例如,文件传输协议(File Transfer Protocol,简称"FTP")下载、 网页浏览、流媒体等,则选择基于初传误块率IBLER的CQI调整算法,进入步骤120;如果该业务是时延敏感类型业务,例如分组语音(Voice over IP, 简称"VoIP")、视频会议等,则选择基于残留误块率RBLER的CQI调整算法,进入步骤130。 In step 110, NodeB receives CQI reported by the UE HSDPA service, the CQI adjustment algorithm is selected according to the service type of the HSDPA service, if the service type is non-delay-sensitive traffic, e.g., file transfer protocol (File Transfer Protocol, referred to as " the FTP ") download, web browsing, streaming media, is selected based on the initial transmission rate IBLER block error CQI adjustment algorithm proceeds to step 120; if the service type is delay-sensitive traffic such as voice over packet (voice over IP, referred to as" VoIP "), video conferencing, is selected based on the CQI adjustment RBLER residual block error rate algorithm proceeds to step 130. 根据业务类型选择相应的CQI调整算法对上报的CQI 进行调整,可以使CQI调整算法更好地适应业务的特点,提高CQI调整算法的性能,使其满足不同业务的QoS需求,提高HSDPA系统的吞吐率。 Select the CQI adjustment algorithm according to the service type of the reported CQI adjusted, the CQI adjustment algorithm can be made to better adapt to the characteristics of the business, to improve the performance of the CQI adjustment algorithm so as to satisfy QoS requirements of different services, improved system throughput of HSDPA rate.

以时延的长短为主要指标,但时延长短并不是唯一指标,还可以综合考虑丢包率、重传次数等其它的指标。 To the length of delay for the main index, but not the only indicator of the length of the delay, packet loss rate can also be taken into account, the number of retransmissions of other indicators and so on.

具体实施时,可以将可能传输的每一类业务分别归入时延敏感类型业务或非时延敏感类型业务,为每一类业务设置一个属于时延敏感类型业务或非时延敏感类型业务的标识,相关网络实体根据该标识选择相应的CQI调整算法进行处理。 When particular embodiments, the transmission may be each included in each delay-sensitive traffic class type of non-delay-sensitive traffic service type, a service setting for each class of service type is delay sensitive or delay-sensitive traffic types identifying, selecting the appropriate network entity related CQI adjustment algorithm according to the identification process. 也可以在相关网络实体上为每一类业务建立业务类型与CQH周整算法的对应表,相关网络实体根据业务类型查表得知对应的CQI调整算法。 May establish a service type integrin algorithm CQH circumferential correspondence table for each class of traffic on the network-related entities, according to the service type of network entity related look-up table that corresponds to CQI adjustment algorithm.

在步骤120中,对于非时延敏感类型业务,NodeB根据IBLER目标值和IBLER测量值调整CQI。 In step 120, for non-delay-sensitive types of services, the NodeB and the target value for adjusting a CQI according IBLER IBLER measurements. 具体地说,NodeB在本地维护一个CQI调整量ACQ/; 若IBLER测量值大于IBLER目标值,则减小AC0/的值;若IBLER测量值小于IBLER目标值,则增大AC^/的值。 Specifically, the NodeB maintained in a local CQI adjustment amount ACQ /; IBLER if IBLER measurement is greater than the target value, AC0 / value is decreased; if the measured value is less than IBLER IBLER target value, the increase in AC ^ / value. 把UE上报的CQI与ACg/之和作为调 The CQI reported by the UE and ACg / tone as the sum

整后的CQI。 CQI after the whole. 对非时延敏感类业务选择基于IBLER的CQI调整算法,可以 Select adjusted based CQI IBLER algorithm for non-time-sensitive class of business, can

将初传成功率控制在合理范围,从而有效减少重传次数,提高HSDPA系统的吞吐率。 The success rate of the initial transmission at a reasonable range, thus effectively reducing the number of retransmissions and improve the throughput of the HSDPA system.

FTP下载、网页浏览、流媒体等业务对时延的要求较低,往往在秒级, 而且由于这些业务在无线链路控制(Radio Link Control,简称"RLC")层采用确认模式(Acknowledged Mode,简称"AM"),也就是说在MAC-hs (高速媒体访问控制)层即使有一定程度的丢包(即RBLER稍大一些), 也可以通过RLC的重传来緩解这个问题。 FTP download, web browsing, streaming media service requirements for low latency, often in the second stage, but since these operations in a radio link control (Radio Link Control, referred to as "RLC") layer using an acknowledged mode (Acknowledged Mode, referred to as "AM"), that is to say in the MAC-hs (high-speed MAC) layer even if there is some degree of loss (ie RBLER slightly larger), it can alleviate this problem by re-heard the RLC. 当然,对这些业务来说,底层的丢包越小越好,这样用户的感受也就越好。 Of course, for these services, the underlying loss as small as possible, so that users feel better. 采用基于IBLER的CQI调整算法能够有效的提高传输效率,充分的利用重传合并增益,通常这些业务的重传次数可以略高,如可设为4次。 IBLER using a CQI adjustment algorithm can effectively improve the transmission efficiency based on the use of full retransmission combining gain, typically the number of retransmissions of these services may be slightly higher, as can be set to four times.

在步骤130中,对于时延敏感类型业务,NodeB测量一段时间内超过最大重传次数仍然没有正确接收的数据的比例,即RBLER,根据这个RBLER 测量值和设定的RBLER目标值调整CQI。 In step 130, the type for delay-sensitive services, the NodeB measured period of time exceeds the maximum number of times the ratio of the retransmitted data is still not received correctly, i.e. RBLER, adjusted according to the CQI measured value and the set RBLER RBLER target. 调整方法与根据IBLER目标值和IBLER测量值调整CQI类似:NodeB同样需要维护一个CQI调整量ACp/ , 若RBLER测量值大于RBLER目标值,则减小AC^的值,若RBLER测量值小于RBLER目标值,则增加ACQ/的值。 The method for adjusting the target value and IBLER IBLER measured CQI value adjustment similar: NodeB also needs to maintain a CQI adjustment amount ACp /, if the measured value is greater than RBLER RBLER the target value of the AC ^ is decreased, if the measured value is less than RBLER target RBLER value, the increase in ACQ / value. 把UE上报的CQI与AC0/之和作为调整后的CQI。 The CQI reported by the UE and AC0 / as the sum of the adjusted CQI. 对时延敏感类业务选择基于RBLER的CQI调整算法,可以在限制最大重传次数(如限制在1~2次)的前提下将RBLER控制在可以接受的范围,基于RBLER调整CQI能比基于IBLER调整CQI更好地满足时延和丢包率的QoS需求。 The delay-sensitive class of service selection based RBLER the CQI adjustment algorithm, may limit the maximum number of retransmissions (e.g., limited to 1 or 2 times) on the premise of the control RBLER acceptable range, based on the adjusted CQI can be compared based RBLER IBLER CQI adjusted to better meet the needs of QoS latency and packet loss rate.

VoIP和视频会议之类的业务对时延的要求很高(在NodeB所能容忍的 VoIP and video conferencing services like high demands on the delay (in NodeB can be tolerated

下行时延要求在几十ms以内,其重传次数一般不能超过两次),而且对RBLER的要求也很高,VoIP —般不能超过0.7%,视频会议可能不能超过0.2%,为了有效的将VoIP业务和视频会议业务在重传1~2次的情况下的RBLER控制在所要求的范围,采用基于RBLER的CQI调整方法是最直接和有效的。 Downlink delay requirements within tens of ms, which generally can not exceed the number of retransmissions twice), but also high demands on RBLER, VoIP - generally no more than 0.7%, videoconferencing may not exceed 0.2%, in order to be effective RBLER in the case of a video conference service and VoIP service in 1 to 2 times the retransmission control in the desired range, the adjustment method using CQI RBLER is based on the most direct and effective.

本发明第二实施方式涉及一种HSDPA系统中CQI调整方法,如图2所示。 The second embodiment of the present invention relates to a method for adjusting CQI in HSDPA system, as shown in FIG.

在步骤210中,NodeB收到UE上报的HSDPA业务的CQI时,根据HSDPA功率的使用情况动态调整IBLER的目标值。 In step 210, NodeB reported CQI UE receives HSDPA service, the target value is adjusted dynamically according to the usage of HSDPA IBLER power. 若HSDPA功率占用率高于第一门限,则增大IBLER目标值,将IBLER目标值设置为一个较高的值(IBLER目标值1 );若HSDPA功率占用率低于第二门限,则降低IBLER 目标值,将IBLER目标值设为一个较低的值(IBLER目标值2 )。 HSDPA power usage is high if the first threshold is increased IBLER target value, the target value setting IBLER to a higher value (target IBLER 1); if HSDPA power utilization is lower than a second threshold, reducing IBLER target value, a target value of the IBLER lower value (target IBLER 2). 从而无论当前小区HSDPA功率占用率为高或为低,均不会因为IBLER目标值的不合理而造成吞吐率的下降。 So regardless of the current cell HSDPA power occupancy rate is high or low, they are not as unreasonable IBLER target and cause a decline in throughput. 避免在小区负载很低、功率有剩余的时候,由于IBLER目标值设置得较高,使得单个UE的传输速率被明显降低;或在小区负栽很高、功率没有剩余的时候,由于IBLER目标值设置得较低,使得小区的吞吐率下降。 Avoid cell load is low, there is surplus power, because of IBLER target value is set higher, so that the transmission rate is decreased single UE; negative or plant cell is high, when the remaining power is not, since the target IBLER set low, such that the cell throughput decreases. 相对于设置固定的IBLER目标值,本实施方式能更好的适应负载情况,提高了吞吐率。 With respect to set a fixed target IBLER, the present embodiment can better adapt to the load, the increased throughput.

接着进入步骤220,根据IBLER测量值和调整后的IBLER目标值对UE 上报的CQI进行调整。 Then proceeds to step 220, it is adjusted according to the target value IBLER IBLER measurements reported by the UE and adjusted CQI. 具体的调整方法与第一实施方式相同,在此不再赘述。 The method of adjusting the same manner as in the first specific embodiment, which is not repeated herein.

另外,在本实施方式中,除了可以设置两个不同大小的IBLER目标值外, 还可以为IBLER目标值预设一个范围,根据HSDPA功率的使用情况,在该范围内调整IBLER目标值。 Further, in the present embodiment, may be provided in addition to two IBLER target values ​​of different size, but may also be a predetermined target value IBLER range, depending on the usage of HSDPA power is adjusted within the range IBLER target. 如果HSDPA功率占用率高于第一门限且旧LER 目标值小于其范围上限,则增大IBLER目标值,如,可以将IBLER目标值增大一个步长;如果HSDPA功率占用率低于第二门限且IBLER目标值大于其范围下限,则降低IBLER目标值,如,可以将IBLER目标值降低一个步长;第一门限同样大于或等于第二门限。 If the occupancy rate of the HSDPA power limits in the first gate and the old LER its upper limit is less than the target value, the target value is increased IBLER, such as, IBLER target value may be increased by one step; if HSDPA power utilization is lower than a second threshold the lower limit of the target and its range IBLER, IBLER target value is reduced, such as, IBLER target value may be reduced by one step; a first threshold equal to or greater than the same second threshold. 该方式能够更灵活地调整IBLER目标值,使得NodeB能够根据最合适的IBLER目标值调整CQI,在没有额外消耗的情况下,最大程度上提高吞吐率和UE的传输速度。 This embodiment can be more flexibly adjusted IBLER target value, so that the NodeB can be adjusted according to the most appropriate CQI IBLER target, without additional consumption, the UE increase the transmission speed and throughput of the maximum extent.

上述对IBLER目标值的调整方法使用了两种门限,本发明的实施方式并不限于这一种方式。 Using the above-described two threshold adjustment method IBLER target, embodiments of the present invention is not limited in this way. 例如,可以使用两个以上的门限将IBLER的目标值可能的取值空间划分为多个区间,对于不同的区间使用不同的步长。 For example, more than two thresholds may be values ​​IBLER target space is divided into a plurality of sections, different sections used for different step sizes. 又如,可以增加迟滞门限以减少产生兵乓效应的概率。 Another example, can increase the hysteresis threshold in order to reduce the probability of ping pong effect.

本发明第三实施方式同样涉及一种HSDPA系统中CQI调整方法,本实施方式是第一第二实施方式的结合,如图3所示。 The third embodiment of the present invention also relates to a method for adjusting CQI in the HSDPA system, the present embodiment is a combination of the first embodiment of the second embodiment, as shown in FIG.

在本实施方式中,NodeB收到UE上报的HSDPA业务的CQI,根据该业务的业务类型选择对应的调整算法对上报的CQI进行调整。 In the present embodiment, the NodeB receives the CQI reported by the UE HSDPA services, adjustment of the reported CQI adjustment algorithm selected corresponding to the service according to the service type. 如果该业务是非时延敏感类型业务,则选择基于初传误块率IBLER的CQI调整算法;如果该业务是时延敏感类型业务,则选择基于残留误块率RBLER的CQI调整算法。 If the service type is non-delay-sensitive services, the rate is selected based on the initial transmission error IBLER CQI adjustment algorithm block; if the service type is delay-sensitive services, the selection algorithm based on adjusting the residual block error rate of CQI RBLER. 根据业务类型选择相应的CQI调整算法对上报的CQI进行调整,可以使CQI调整算法更好地适应业务的特点,提高CQI调整算法的性能,使其满足不同业务的QoS需求,提高HSDPA系统的吞吐率。 Select the CQI adjustment algorithm according to the service type of the reported CQI adjusted, the CQI adjustment algorithm can be made to better adapt to the characteristics of the business, to improve the performance of the CQI adjustment algorithm so as to satisfy QoS requirements of different services, improved system throughput of HSDPA rate.

基于RBLER的CQI调整算法与第一实施方式相同,在此不再赘述。 The same as the first embodiment, the adjustment algorithm is based RBLER CQI, are not repeated here. 在使用基于IBLER的CQI调整算法时,根据HSDPA功率的使用情况动态调整IBLER的目标值。 When using the adjustment algorithm based CQI IBLER dynamically adjusted according to the usage target IBLER HSDPA power. 如果HSDPA功率占用率高于第一门限且IBLER目标值d、 于其上限,则增大IBLER目标值;如果HSDPA功率占用率低于第二门限且IBLER目标值大于其下限,则降低IBLER目标值;其中,第一门限大于或等于第二门限。 If the occupancy rate of the HSDPA power limits in the first door and IBLER target d, than the upper limit, the target value is increased IBLER; if HSDPA power utilization is lower than a second threshold greater than the target value and IBLER lower limit, the target value is decreased IBLER ; wherein the first threshold is greater than or equal to the second threshold. 增加和降低IBLER目标值的具体方式可参考第二实施方式。 DETAILED DESCRIPTION IBLER increasing and decreasing the target value may be a reference to the second embodiment. 从而无论当前小区HSDPA功率占用率为高或为低,均不会因为IBLER目标值的不合理而造成吞吐率的下降,能更好的适应负载情况,提高了吞吐率。 So regardless of the current cell HSDPA power occupancy rate is high or low, it is not as unreasonable IBLER target and cause a decline in throughput, better able to adapt to the load and improve throughput.

本发明第四实施方式涉及一种基站节点,如图4所示,包括:接收单元, 用于接收UE上报的HSDPA业务的信道质量指示CQI;选择单元,用于根据该业务的业务类型选择对应的调整算法;CQI调整单元,用于根据选择单元所选的调整算法对接收单元上报的CQI进行调整。 The fourth embodiment of the present invention relates to a base station node, as shown in FIG 4 comprising: a receiving unit for receiving HSDPA service reported by the UE indicates the CQI channel quality; selecting means for selecting a corresponding service according to the service type the adjustment algorithm; CQI adjustment means for adjusting a CQI reported to a receiving unit in accordance with the selected adjustment algorithm selection unit. 根据业务类型选择相应 The service type to select the appropriate

的CQI调整算法对上报的CQI进行调整,可以使CQI调整算法更好地适应业务的特点,提高CQI调整算法的性能,使其满足不同业务的QoS需求,提高HSDPA系统的吞吐率。 The CQI adjustment algorithm to adjust the reported CQI, the CQI adjustment algorithm can better adapt to the characteristics of the business, improve the performance of CQI adjustment algorithm to make it meet the QoS requirements of different services, to improve the throughput of HSDPA system.

如果该业务的业务类型是非时延敏感类型,则选择单元所选的调整算法是才艮据初传误块率IBLER测量值和IBLER目标值对CQI进行调整;该CQI 调整单元进一步包含基于IBLER的CQI调整模块,用于:在IBLER测量值大于IBLER目标值时,减小调整变量的值(该调整变量是该基站节点中维护的一个变量),在IBLER测量值小于IBLER目标值时,增加调整变量的值, 将UE上报的CQI加上该调整变量的值作为调整后的CQI。 If a non-delay-sensitive service type of the service type, the cells of the selected adjustment algorithm is only gen select data rate IBLER initial transmission error value measurement IBLER target block and the CQI adjustment; the adjustment unit further comprises a CQI based on the IBLER CQI adjustment module, configured to: when the measured value is greater than IBLER IBLER target value, decrease the value of the adjustment variable (the variable adjustment of the base station node is a variable maintained), when the measured value is less than IBLER IBLER target, increasing adjustment the value of the variable, the UE reports a CQI value obtained by adding the adjustment variable as adjusted CQI. 对非时延敏感类业务选择基于IBLER的CQI调整算法,可以将初传成功率控制在合理范围, 从而有效减少重传次数,提高HSDPA系统的吞吐率。 For non-delay-sensitive class of service selection based IBLER CQI adjustment algorithm, the success rate of the initial transmission may be controlled in a reasonable range, thus effectively reducing the number of retransmissions and improve the throughput of the HSDPA system.

如果该业务的业务类型是时延敏感类型,则选择单元所选的调整算法是根据残留误块率RBLER测量值和RBLER目标值对CQI进行调整;该CQI 调整单元进一步包含基于RBLER的CQI调整模块,用于:在RBLER测量值大于RBLER目标值时,减小调整变量的值(该调整变量是该基站节点中维护的一个变量),在RBLER测量值小于RBLER目标值时,增加调整变量的值,将UE上报的CQI加上该调整变量的值作为调整后的CQI。 If the service type of the service type is delay-sensitive, adjusting the selected arithmetic unit selects the CQI is adjusted according to the residual block error rate measurements and RBLER RBLER target; the adjustment unit further comprises a CQI based on the CQI adjustment module RBLER configured to: when the measured value is greater than RBLER RBLER target value, decrease the value of the adjustment variable (the variable adjustment of the base station node is a variable maintained), when the measured value is smaller than RBLER RBLER target, increase the value of the adjustment variable , the CQI reported by the UE adds the value of the adjustment variable as the adjusted CQI. 对时延敏感类业务选择基于RBLER的CQI调整算法,可以在限制最大重传次数为1 ~ 2次的前提下将RBLER控制在可以接受的范围,基于RBLER调整CQI能比基于IBLER调整CQI更好地满足时延和丢包率的QoS需求。 1 - 2 times under the premise of the control RBLER acceptable range, based on the adjusted CQI RBLER better to delay-sensitive class of service selection based on the CQI adjustment algorithm RBLER, it may limit the maximum number of retransmissions than the CQI based on the adjustment IBLER QoS to meet the needs of delay and packet loss rate.

该基站节点还包含IBLER目标值调整单元,用于根据HSDPA功率的当前使用情况动态调整IBLER的目标值。 The base station node further comprises IBLER target adjustment means for dynamically adjusting IBLER according to the current usage of HSDPA power target value. IBLER目标值调整单元进一步包括: 判断单元,用于比较HSDPA功率占用率和预定门限;IBLER目标值调整单元,用于调整IBLER的值;如果判断单元判定HSDPA功率占用率高于第一门限且IBLER目标值小于其上限,则指示IBLER目标值调整单元增大IBLER 目标值;如果判断单元判定HSDPA功率占用率低于第二门限且IBLER目标值大于其下限,则指示IBLER目标值调整单元降低IBLER目标值;其中, 第一门限大于或等于第二门限。 IBLER target adjustment unit further comprises: a determination unit for comparing power usage, and HSDPA predetermined threshold; IBLER target adjustment means for adjusting the value of IBLER; determination unit determines if the HSDPA power limits in the occupancy rate of the first gate and IBLER the upper limit is less than the target value, the target value adjusting unit increases indicating IBLER IBLER target; HSDPA power determination unit determines if the occupancy is below a second threshold larger than the target value and the lower limit IBLER, indicating IBLER target adjustment unit reduces the target IBLER value; wherein the first threshold is greater than or equal to the second threshold. 基于IBLER的CQI调整模块根据IBLER测量值和调整后的IBLER目标值对CQI进行调整。 IBLER a CQI based on the CQI adjustment module is adjusted according to the target value IBLER IBLER measurements and adjustments. 从而无论当前小区HSDPA 功率占用率为高或为^f氐,均不会因为IBLER目标值的不合理而造成吞吐率的下降。 So regardless of the current cell HSDPA power or high occupancy rate for the ^ f Di, are not as unreasonable IBLER target and cause a decline in throughput. 避免在小区负载很低、功率有剩余的时候,由于IBLER目标值设置得较高,使得单个UE的传输速率被明显降低;或在小区负载很高、功率没有剩余的时候,由于IBLER目标值设置得较低,使得小区的吞吐率下降。 Avoid cell load is low, there is surplus power, because of IBLER target value is set higher, so that the transmission rate is decreased single UE; or a cell load is high, there is no remaining power, because of target value setting IBLER to be low, so that the decrease in cell throughput. 相对于设置固定的IBLER目标值,本实施方式能更好的适应负载情况,提高了吞吐率。 With respect to set a fixed target IBLER, the present embodiment can better adapt to the load, the increased throughput.

综上所述,在本发明的部分实施方式中,根据业务类型选择相应的CQI 调整算法对上报的CQI进行调整,可以使CQI调整算法更好地适应业务的特点,提高CQI调整算法的性能,使其满足不同业务的QoS需求,提高HSDPA 系统的吞吐率。 As described above, in some embodiments of the present invention, the CQI adjustment select the appropriate algorithm according to the service type of the reported CQI adjusted, the CQI adjustment algorithm can be made to better adapt to the characteristics of the business, to improve the performance of the CQI adjustment algorithm, to meet the QoS requirements of different services, improve throughput of the HSDPA system.

对非时延^:感类业务选4奪基于IBLER的CQI调整算法,可以将初传成功率控制在合理范围,从而有效减少重传次数,提高HSDPA系统的吞吐率。 ^ Non-delay: 4 selected from the class of business sense wins based on the CQI adjustment algorithm IBLER, the success rate of the initial transmission may be controlled in a reasonable range, thus effectively reducing the number of retransmissions and improve the throughput of the HSDPA system. 对时延敏感类业务选4奪基于RBLER的CQI调整算法,可以在限制最大重传次数(如限制在1~2次)的前提下将RBLER控制在可以接受的范围,基于RBLER调整CQI能比基于IBLER调整CQI更好地满足时延和丢包率的QoS 需求。 The delay-sensitive traffic class based RBLER selected from 4 wins a CQI adjustment algorithm can limit the maximum number of retransmissions (e.g., limited to 1 or 2 times) is provided in the acceptable range, based on the adjusted CQI can RBLER ratio control RBLER IBLER CQI adjusted to better meet the needs of latency and packet loss rate QoS based.

在部分实施方式中,可以根据不同的负载情况来调整IBLER目标值,在HSDPA功率占用率较高可以将IBLER目标值设得高一些,在HSDPA功率占用率较低时可以将IBLER目标值设得低一些,相对于设置固定的旧LER目标值能更好的适应负载情况,提高了吞吐率。 In some embodiments, the target value may be adjusted IBLER different load conditions, the high occupancy rate HSDPA power IBLER target may be a high number, IBLER target value may be set too low when the power usage HSDPA low, relative to a fixed set of old LER target to better adapt to the load and improve throughput.

虽然通过参照本发明的某些优选实施方式,已经对本发明进行了图示和描述,但本领域的普通技术人员应该明白,可以在形式上和细节上对其作各种改变,而不偏离本发明的精神和范围。 While the invention has been shown and described with reference to certain preferred embodiments of the present invention, but those of ordinary skill in the art should be understood that various changes may be made thereto in form and detail without departing from the present the spirit and scope of the invention.

Claims (8)

1.一种HSDPA系统中CQI调整方法,其特征在于,包括以下步骤: 基站节点收到用户设备上报的HSDPA业务的信道质量指示CQI,根据该业务的业务类型选择相应的调整算法对上报的CQI进行调整; 其中,如果该业务类型为非时延敏感类型业务,则在初传误块率IBLER测量值大于IBLER目标值时,减小调整变量的值,在IBLER测量值小于IBLER目标值时,增加调整变量的值,将所述用户设备上报的CQI加上所述调整变量的值作为调整后的CQI; 如果所述业务类型为时延敏感类型业务,则在残留误块率RBLER测量值大于RBLER目标值时,减小调整变量的值,在RBLER测量值小于RBLER目标值时,增加调整变量的值,将所述用户设备上报的CQI加上所述调整变量的值作为调整后的CQI。 1. A method for adjusting CQI HSDPA system, characterized by comprising the steps of: a base station reported by the user equipment node receives the HSDPA service channel quality indicator CQI, select the appropriate adjustment algorithm according to the service type of the service to the reported CQI adjustment; wherein, if the service type is non-delay-sensitive traffic types, then the block error rate in the initial transmission IBLER IBLER measurement is greater than the target value, reducing the value of the adjustment variable, when the measured value is smaller than IBLER IBLER target, increase the value of the adjustment variable, the CQI reported by the user equipment adding the adjustment value of the variable as adjusted CQI; and if the service type is delay-sensitive traffic type, the block error rate measurement is greater than the residual RBLER when RBLER target value, decrease the value of the adjustment variable, when the measured value is less than RBLER RBLER target, increase the value of the adjustment variable, the CQI reported by the user equipment adding the adjustment value of the variable as adjusted CQI.
2. 根据权利要求1所述的HSDPA系统中CQI调整方法,其特征在于, 所述非时延敏感类型业务是以下业务类型之一:文件传输协议FTP下载、网页浏览、流媒体;所述时延敏感类型业务是以下业务类型之一:分组语音、视频会议。 The HSDPA system adjusting method according to claim 1 for the CQI, wherein said non-delay-sensitive traffic service type is one of the following types: File Transfer Protocol (FTP) download, web browsing, streaming media; the time delay-sensitive type of business is one of the following business types: packet voice, video conference.
3. 根据权利要求1所述的HSDPA系统中CQI调整方法,其特征在于, 所述调整变量是所述基站节点中维护的一个变量。 3. The adjustment method according to the HSDPA system according to claim 1, CQI, characterized in that the adjustment variable is a variable maintained by the base station node.
4. 根据权利要求1所述的HSDPA系统中CQI调整方法,其特征在于, 在根据IBLER测量值和IBLER目标值对CQI进行调整时,根据HSDPA功率的当前使用情况动态调整IBLER的目标值。 4. The method for adjusting the HSDPA system according to claim 1 for the CQI, wherein, in the measurement value and when IBLER the CQI target IBLER adjusted dynamically adjusted according to the current target IBLER HSDPA power usage.
5. 根据权利要求4所述的HSDPA系统中CQI调整方法,其特征在于,通过以下步骤根据当前HSDPA功率的使用情况动态调整IBLER的目标值:如果HSDPA功率占用率高于第一门限且IBLER目标值小于该IBLER 目标值的上限,则增大IBLER目标值;如果HSDPA功率占用率低于第二门限且IBLER目标值大于该IBLER 目标值的下限,则降^氐IBLER目标值;其中,所述第一门限大于或等于所述第二门限。 The adjustment method of claim 4 in HSDPA system according to claim CQI, wherein the target value is adjusted dynamically based on current usage IBLER HSDPA power through the following steps: If the HSDPA power limits in the occupancy rate of the first gate and the target IBLER the upper limit value is less than the IBLER target value, the target value is increased IBLER; if HSDPA power utilization is lower than the second threshold and greater than the lower limit of the target IBLER IBLER target, the target reducing IBLER Di ^; wherein said the first threshold is greater than or equal to the second threshold.
6. —种基站节点,其特征在于,包括:接收单元,用于接收用户设备上报的HSDPA业务的信道质量指示CQI;选择单元,用于根据所述业务的业务类型选择对应的调整算法,其中, 如果所述业务的业务类型是非时延敏感类型,则所述选择单元所选的调整算法是在初传误块率IBLER测量值大于IBLER目标值时减小调整变量的值, 在IBLER测量值小于IBLER目标值时增加调整变量的值;如果所述业务的业务类型是时延敏感类型,则所述选择单元所选的调整算法是在残留误块率RBLER测量值大于RBLER目标值时减小调整变量的值,在RBLER测量值小于RBLER目标值时增加调整变量的值;CQI调整单元,用于根据所述选择单元所选的调整算法对所述接收单元上报的CQI进行调整。 6. - kind of a base station node, wherein, comprising: a receiving unit for receiving channel quality reported by a user equipment indicating the CQI HSDPA service; selecting means for selecting a corresponding adjustment algorithm according to the service types of the services, wherein , decreases if the service type is non-delay-sensitive types of the services, then the selected cells of the selected adjustment algorithm is the initial transmission block error rate measurement is greater than IBLER IBLER target adjustment value of the variable, the measured value in IBLER increase the value of the adjustment variable is less than the target value IBLER; if the service type is delay-sensitive traffic types, the selected adjustment algorithm is the selection means is reduced when the residual block error rate is greater than the measured value RBLER target RBLER the value of the adjustment variable, increases when RBLER measurement is less than the target value of the adjustment variable RBLER; CQI adjustment means for adjusting the CQI reported by the receiving unit adjustment algorithm selected according to the selected unit.
7. 根据权利要求6所述的基站节点,其特征在于,还包含IBLER目标值调整单元,用于根据HSDPA功率的当前使用情况动态调整IBLER的目标值。 The base station node according to claim 6, characterized by further comprising IBLER target adjustment means for dynamically adjusting a target value based on current usage IBLER HSDPA power.
8. 根据权利要求7所述的基站节点,其特征在于,所述IBLER目标值调整单元进一步包括:判断单元,用于比较HSDPA功率占用率和预定门限; IBLER目标值调整单元,用于调整IBLER的值;如果所述判断单元判定HSDPA功率占用率高于第一门限且IBLER目标值小于该IBLER目标值的上限,则指示所述IBLER目标值调整单元增大IBLER目标值;如果所述判断单元判定HSDPA功率占用率低于第二门限且IBLER目标值大于该IBLER目标值的下限,则指示所述IBLER目标值调整单元降低IBLER目标值;其中,所述第一门限大于或等于所述第二门限。 8. The base station node according to claim 7, wherein said target adjustment IBLER unit further comprises: a determination unit for comparing power usage, and HSDPA predetermined threshold; IBLER target adjustment unit for adjusting IBLER value; if the judging unit determines that the occupancy rate of the HSDPA power limits in the first door than the upper limit target value and the IBLER IBLER target value, indicating the target adjustment unit increases IBLER IBLER target value; if the judging means HSDPA determined power utilization is lower than the second threshold and greater than the lower limit of the target IBLER IBLER target value, indicating the target adjustment unit reduces IBLER IBLER target; wherein the first threshold is greater than or equal to the second threshold.
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