CN100426799C - Access hard switchover method and system of high speed downlink packet - Google Patents

Access hard switchover method and system of high speed downlink packet Download PDF

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CN100426799C
CN100426799C CN 200610058247 CN200610058247A CN100426799C CN 100426799 C CN100426799 C CN 100426799C CN 200610058247 CN200610058247 CN 200610058247 CN 200610058247 A CN200610058247 A CN 200610058247A CN 100426799 C CN100426799 C CN 100426799C
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ue
data
backup
rnc
hs
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CN1870591A (en
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秦亚莉
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华为技术有限公司
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Abstract

本发明提供一种高速下行包接入硬切换方法和系统,本发明通过使RNC在UE即将进行高速下行包接入硬切换时,对UE各业务的HS-DSCH数据进行备份,并根据源小区基站删除的数据的信息,将其备份的相应HS-DSCH数据发送至目标小区基站,对于AM业务,本发明能够避免RLC层重传过程,而且,进一步避免了UE检测到数据丢失而不断发送重传请求、RLC不断向目标小区基站发送重传数据的无效重传过程,本发明还避免了AM业务由于RLC层重传而导致的数据传输时延大的现象;对于UM、TM业务,RLC将源基站小区删除的数据直接发送至目标小区基站,避免了数据丢失等现象;从而实现了节约网络资源,提高数据传输速率,提高用户满意度的目的。 The present invention provides a high-speed downlink packet access system and a hard handover method, when the RNC by the forthcoming high speed downlink packet access hard handover UE according to the present invention, a HS-DSCH data backup service for each UE and the source cell base station deletes the information data of the corresponding HS-DSCH data backup is sent to the target cell base station for the AM service, the present invention can avoid RLC layer retransmission process, and further avoids the UE detects loss of data continuously transmitted weight retransmission request, RLC to the target cell base station continuously transmits the retransmission data invalid retransmission processes, the present invention also avoids large data transfer service since AM RLC layer retransmission delay caused by the phenomenon; for UM, TM service, the RLC deleting the source base station transmits data cell directly to the target cell base station, to avoid data loss phenomena; thereby achieving the purpose of saving the network resources, improving data transfer rates, improved customer satisfaction.

Description

一种高速下行包4妾入硬切换方法和系统 A high speed downlink packet 4 concubine into hard handover method and system for

技术领域 FIELD

本发明涉及网络通讯技术领域,具体涉及一种高速下行包接入硬切换方法和系统。 The present invention relates to network communication technologies, and particularly relates to a high-speed downlink packet access a hard handover method and system.

背景技术 Background technique

WCDMA ( Wideband Code Division Multiple Access,宽带码分多址接入) 技术最早的协议版本是Release99,在该版本中,上行和下行业务的承载都是基于专用信道,上行和下行的数据传输速率均能够达到384Kbps。 WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access) technology is Release99 first protocol version, in this version, the uplink and downlink traffic is carried on dedicated channels, upstream and downstream data rates are able to reach 384Kbps.

由于用户对数据传输速率的需求越来越高,WCDMA标准制定组织随后陆续推出了下行高速数据包接入技术和上行高速数据包接入技术,这两种接入技术分别能够提供高达14.4Mbps和5.76Mbps的峰值速率,而且,频谱效率也获得了很大的提高。 Due to user demand for increasingly high data transmission rate, WCDMA standard-setting organization then launched a high-speed downlink packet access technology and high speed uplink packet access technology, the two access technologies are capable of providing up to 14.4Mbps and 5.76Mbps peak rate, and spectral efficiency also achieved a significant improvement.

HSDPA ( High Speed Downlink Packet Access,高速下行包接入)作为高速下行数据包接入技术,在2()02年引入到了3GPPRelease5的版本中,HSDPA系统的主要特点包括:采用2ms的短帧,在物理层采用HARQ (HybridAutomatic Repeat R叫uest,物理层混合自适应重传请求)和AMC (自适应调制编码)技术,引入16QAM(十六进制正交幅度调制)高阶调制提高频语利用率,通过码分和时分实现各个UE (用户设备)的共享信道调度。 HSDPA (High Speed ​​Downlink Packet Access, High-Speed ​​Downlink Packet Access) as a high-speed downlink data packet access technology, in 2 () 02 into 3GPPRelease5 version, the main features of the HSDPA system comprising: 2ms short frame employed in The physical layer uses HARQ (HybridAutomatic Repeat R called uest, physical layer hybrid automatic repeat request) and AMC (adaptive modulation coding) technique is introduced 16QAM (quadrature amplitude modulation hex) to improve the high order modulation frequency utilization language realize each UE (user equipment) by code division and time division scheduled shared channel. 其中的HARQ技术采用了SAW(停等)协议,要求基站在向UE发送数据后,需要获取UE反馈ACK/NACK (应答信号/4昔误应答信号),基站通过ACK/NACK可以获知UE是否已正确接收到数据,从而确定是需要向UE重传数据,还是向UE发送新的数据。 Wherein the HARQ technique employs the SAW (Stop, etc.) protocol, requires the base station after transmitting data to the UE, needs to acquire UE feeds back the ACK / NACK (acknowledge signal / 4 past error response signal), the base station through the ACK / NACK can know whether the UE has correctly received data to determine whether the UE needs to retransmit the data or transmit new data to the UE. HSDPA在下行增加了两个物理信道, 一个是HS-SCCH ( High Speed Shared Control Channel,高速共享控制信道),用于承载解调伴随数据信道HS-PDSCH所需的信令;另一个是HS-PDSCH ( High Speed Physical Downlink Shared Channel,高速物理下行共享信道),用于承载用户的数据信息。 HSDPA adds two downlink physical channel, is a HS-SCCH (High Speed ​​Shared Control Channel, HS-SCCH) for carrying along the desired demodulation HS-PDSCH data channel signaling; another is HS- PDSCH (High Speed ​​physical downlink shared channel, high speed physical downlink shared channel), for carrying user data. HSDPA在上行增加了一个物理信道HS-DPCCH ( high speed-dedicated physical control channel,高速专用 HSDPA adds a physical uplink channel HS-DPCCH (high speed-dedicated physical control channel, a High Speed ​​Dedicated

正确的信息即ACK/NACK,或者用于承载CQI (信道质量指示信息)。 I.e. the correct information ACK / NACK, or for carrying CQI (Channel quality indicator). 同时, HSDPA系统在MAC层也增加了MAC-hs实体来支持HSDPA的流控,进行快速调度/优先权管理、HARQ和TFRI ( Transport Format and Resource Indicator,传车命格式和资源指示)选择。 Meanwhile, in the HSDPA system, the MAC layer also increases the MAC-hs entity to support the HSDPA flow control, fast scheduling / priority management, and the HARQ TFRI (Transport Format and Resource Indicator, transmission format and resource indication life vehicles) selected. MAC-hs位于MAC-d之下,物理层之上。 MAC-hs located below the MAC-d, above the physical layer.

HSUPA ( High Speed Uplink Packet Access,高速上行包接入)作为高速上行数据包接入技术,在2004年引入到了3GPPRelease6的版本中。 HSUPA (High Speed ​​Uplink Packet Access, High Speed ​​Uplink Packet Access) as the high speed uplink packet access technology, introduced in 2004, in the version 3GPPRelease6. HSUPA系统的主要特点包括:采用2ms短帧或10ms帧,在物理层采用HARQ技术,并在上行基站处采用快速调度技术,提高了上行的频语效率。 The main features of HSUPA system comprising: using the frame 10ms or 2ms short frame using HARQ technology in physical layer, and the use of fast scheduling at the base station in the uplink, to improve the efficiency of uplink frequency language.

在无线通信系统中,由于用户具有移动性,所以,无线通信系统要支持用户在不同的基站之间的切换。 In a wireless communication system, since the user with mobility, the wireless communication system to support the user to switch between different base stations. 在WCDMA系统中,引入的一个关键技术就是软切换,软切换的实现过程为:UE测量邻近小区的CPICH( Common Pilot Channel, 公共引导信道)的Ec/10, UE根据测量结果建立、并维护一个DCH (Dedicated Channel,专用信道)激活集,UE和DCH激活集中的小区维持软切换连接,保持数据传输。 In a WCDMA system, a key technology to introduce an soft handover, soft handover implementation process is: UE measure neighboring cell CPICH (Common Pilot Channel, the common pilot channel) Ec / 10, UE according to the measurement result of the establishment and maintenance of a DCH (dedicated channel, dedicated channel) active set, the UE DCH active set cell and maintain the soft handover connection, maintaining data transmission. DCH激活集中的小区可以属于同一个基站,也可以属于不同基站。 DCH active set cell may belong to the same base station, may belong to different base stations.

与第二代移动通讯系统中的GSM (全球移动通信系统)只能进行不同基站小区间的硬切换相比,软切换提高了用户在不同基站小区间的婆:据平滑传输, 使得业务的服务质量比较好,且不容易导致数据丟失。 Second generation mobile communication system GSM (Global System for Mobile communication system) only hard handover between base stations of different cells compared to the improved soft handoff between different base stations in the user woman cell: data transmission smooth, so that the service business the quality is better, and does not easily lead to data loss. 但是,在HSDPA的数据传输中,HSDPA是下行共享信道,UE在一个时刻只能和一个小区存在HSDPA 链接,这个小区称为HSDPA服务小区。 However, data transmission in the HSDPA, HSDPA downlink shared channel, the UE and a time only one cell in the presence of HSDPA link, the HSDPA serving cell is called cell. 通常,UE的HSDPA服务小区是具有HSDPA承载能力的最佳小区。 Typically, UE in the HSDPA serving cell is the best cell HSDPA-carrying capacity. 这样, 当UE的最佳小区变更时,就可能会发生跨基站的HSDPA硬切换。 Thus, when the best cell change of the UE, it may occur across the HSDPA base station hard handover.

在HSDPA硬切换时,RNC会给目标小区所在基站发送无线链路重配置准备消息,并给UE发送无线资源控制物理信道重配置消息,此时,开始执行HSDPA 硬切换。 When HSDPA hard handoff, the base station of the target cell will give the RNC sends a radio link reconfiguration prepare message, and transmitting a RRC physical channel reconfiguration message to the UE, at this time, begin HSDPA hard handover. 在执行HSDPA硬切换过程中,复位源d 、区所在基站中用户的MAC-hs, 也就是将基站中此用户所有緩存的数据删除,删除的数据中包括MAC-hs PDU。 In HSDPA performs a hard handover process, the reset source d, the base station area where the user MAC-hs, that is, the base station user to delete all cached data, delete data includes MAC-hs PDU. 在HSDPA硬切换后,目标小区基站向RNC请求的MAC-d PDU是该用户的新数据,在HSDPA硬切换前緩存在源小区基站的用户数据已经被删除,放在HARQ buffer中的数据也被删除了。 After the hard handoff HSDPA, MAC-d PDU to the RNC the target cell base station requesting the user data is new data, the cache is deleted in the user data source cell base station before the hard handover the HSDPA, the data in the HARQ buffer is also deleted. 这部分删除的数据不能够通过基站来恢复, 只能通过高层重传来恢复。 This part of the deleted data can not be recovered by the base station, it can only be restored by coming top heavy. 也就是说,对于具备高层重传机制的业务来说,当RLC层不能够得到UE对源d、区基站删除的这部分数据的确认时,就会启动RLC 层通过目标基站重传这些被删除的数据,但是,对于不具备高层重传机制的业务,这些被删除的数据就不能够恢复了。 That is, the upper layer retransmission mechanism is provided for service, when the RLC layer can not be obtained, it was confirmed that the base station deletes the UE area portion of the source data d, the RLC layer will start target base station by retransmitting these deleted the data, however, do not have the level for retransmission services, these deleted data can not be recovered.

从上述对HSDPA硬切换的描述中可以看出,对于AM ( Acknowledge Mode, 确认模式)的.RLC ( Radio Link Control,无线链路控制)传输模式来说,数据删除会导致大量的RLC层数据重传,使得用户在小区间硬切换时,数据传输时延大。 As can be seen from the description of the above-described hard handover in HSDPA, for (Acknowledge Mode, acknowledgment mode) .RLC AM (Radio Link Control, RLC) transmission mode, the data will cause a large amount of data retransmission RLC layer pass, so that the user when the hard handoff between cells, large data transmission delay. 当源小区基站删除的数据多时,接收端UE会不断的发送重传请求,从而使RLC向目标小区基站发送大量的、内容重复的重传数据,造成无效重传。 When the source cell base station deletes the data is large, the receiving terminal UE will continue to send a retransmission request, so that a large number of RLC transmission, the content of repeating data retransmission to the target cell base station, resulting in ineffective retransmission.

对于UM ( Un陽acknowledgeMode,非确认才莫式)和TM ( Transparent Mode 透明模式)的RLC层传输模式来说,数据删除会导致数据丢弃、且无法恢复, 使用户对业务的感受差。 For UM (Un the acknowledgeMode male, non-acknowledgment before Morse) and TM (Transparent Mode Transparent Mode) RLC layer of the transmission mode, the data will cause a discard of the data, and can not be restored, so that the user experience of service difference.

在LTE (Long Term Evolution,长期演进)中,如果E-NodeB (增强基站) 之间不能提供很好的互联性能,即不同基站间的用户数据不能直接进行互传, 则在发生下行共享信道硬切换时,仍然需要E-NodeB的上层节点将用户的源小区E-NodeB中没有发送出去的数据转发给用户目标小区的E-NodeB,否则,就不能实现无损硬切换。 In LTE (Long Term Evolution, LTE), can provide good performance interconnection among if E-NodeB (enhanced base station), i.e., user data between different base stations not directly pass each other, the occurrence of a downlink shared channel in a hard switching, there remains a need in the upper level node E-NodeB forwards the user data source cell E-NodeB are not sent to the user's E-NodeB target cell, or can not be lossless hard handover. 由于LTE中支持的用户速率将会更高,可能会造成更多 Since LTE in support of user rate will be higher, it may cause more

数据的丢失,因此,在LTE中,也存在由于数据删除引起的上层数据重传、数 Loss of data, and therefore, in LTE, there is an upper layer data since data deletion caused by retransmission, the number of

据传输时延大及用户对业务的感受差等问题。 According to a large transmission delay and the business user experience and poor. 发明内容 SUMMARY

本发明的目的在于,提供一种高速下行包接入硬切换方法和系统,通过使 Object of the present invention is to provide a high-speed downlink packet access a hard handover method and system, by

RNC对用户数据进行备份,避免了源'j、区基站由于删除数据而导致的AM业务的RLC层重传、数据传输时延大以及UM、 TM业务的数据丢失现象,实现了节约网络资源,提高数据传输速率,提高用户满意度的目的。 RNC backup user data, to avoid the source 'j, RLC layer retransmission base region due to deletion of data caused by the AM service, large data transmission delay and data UM, TM Loss in business, a saving of network resources, higher data rates, the purpose of improving the user satisfaction.

为达到上述目的,本发明提供的一种高速下行包接入硬切换方法,包括: To achieve the above object, a high-speed downlink packet access according to the present invention is to provide a hard handover method, comprising:

a、在用户设备UE进行高速下行包接入HSDPA硬切换前,无线网络控制器RNC开始对该UE的高速下行共享信道HS-DSCH数据进行备份; a, high speed downlink shared channel HS-DSCH high speed downlink data packet access HSDPA before the hard handover, the radio network controller RNC to the UE starts the backup user equipment UE;

b 、源小区基站将由于该UE的HSDPA硬切换而未能发出并需要删除的数据的信息传输至RNC; b, the source cell base station will not be issued because of the HSDPA UE and the need to remove the hard handover information to the RNC to transmit data;

c、 RNC根据源小区基站传输来的信息,将其备份的相应HS-DSCH数据发送至目标小区基站。 c, RNC according to the information transmitted from the source cell base station, to the respective backup HS-DSCH data to the target cell base station.

所述步骤a包括: Said step a comprises:

al、在UE处于软切换区域后,RNC开始对该UE的HS-DSCH数据进行备份;或 al, after the UE is in a soft handover region, RNC to start the backup data of the HS-DSCH UE; or

a2、在UE检测到其最佳小区和次最佳小区满足预定条件时,通知RNC, RNC根据该通知开始对该UE的HS-DSCH数据进行备份。 a2, when the UE detects that it best cell and the next best cell satisfies a predetermined condition, notify RNC, RNC to start the backup data of the HS-DSCH UE according to the notification.

所述预定条件包括:最佳小区和次最佳小区的主公共导频信道/辅助公共导频信道P-CPICH/S-CPICH的Ec/N0差值低于预定门限、且该差值持续减小。 Said predetermined condition comprises: a primary common pilot channel and a secondary pilot channel best cell of the best cell / secondary common pilot channel P-CPICH / S-CPICH of Ec / N0 the difference is below a predetermined threshold, and the difference sustained Save small.

所述步骤a还包括下述步骤中的任意一个: Said step a further comprises any one of the following steps:

UE离开软切换区域时,RNC停止对该UE的HS-DSCH数据进行备份;UE完成HSDPA硬切换时,RNC停止对该UE的HS-DSCH数据进行备份。 When the UE leaves the soft handover region, RNC stops the HS-DSCH backup data of the UE; UE completes HSDPA when hard handover, RNC stops HS-DSCH data to the UE backup. 所述步骤a中RNC开始对该UE的HS-DSCH数据进行备份的步骤包括: a3、 RNC为UE正在进行的各业务均设置对应的緩存区域; a4、 RNC将其发送至源小区基站的该UE各业务的HS-DSCH数据对应存储在相应的緩存区域中。 A step in said step of the RNC to start the backup data HS-DSCH UE comprises: a3, RNC for the UE ongoing operations are provided corresponding to the respective buffer area; a4, RNC sends it to the source base station of the cell HS-DSCH data to the UE corresponding to each service is stored in the corresponding cache areas.

所述步骤a3包括: Said step a3 comprises:

a31 、 RNC获取UE正在进行的各业务的下行调度速率; a32、 RNC根据各业务的下行调度速率与距离硬切换的时间的乘积确定各业务的緩存区域的大小;或所述步骤a3包括: a31, RNC UE acquires downlink scheduling rates of each service in progress; a32, RNC determines the size of the buffer area of ​​each service according to the downlink scheduling rate of each product and service from a hard handover time; a3 or step comprises:

a33 、 RNC根据RLC Status PDU的返回速度确定业务对应的緩存深度,RNC 根据各业务的緩存深度和冗余系数确定各业务的緩存区域的大小。 a33, RNC corresponding to the service determined cache depth based on the return speed of the RLC Status PDU, RNC determines the size of the cache area according to the cache depth of each service and each service redundancy coefficient.

所述步骤a32中距离硬切换的时间根据该UE的最佳小区和次最佳小区的 Said step distance a32 hard handover time in accordance with the best cell of the UE and sub-optimal cell

导频强度变化速率确定,, 所述步骤b包括: Determining a rate of change in intensity of the pilot ,, said step b comprises:

bl 、源小区基站在执行UE的HSDPA硬切换时,将由于该UE的HSDPA 硬切换而未能发出并需要删除的HS-DSCH数据中的RLC PDU的序列号信息传输至RNC。 BL, the source cell base station when the UE performs hard handover of HSDPA, since HSDPA the hard handover of the UE fails to issue the information transmission sequence number of the RLC PDU needs to be removed and the HS-DSCH data to the RNC.

所述步骤bl包括: Said step bl comprising:

源小区基站在执行UE的HSDPA硬切换时,将需要删除的HS-DSCH数据中连续RLC PDU的首/尾RLC PDU的序列号信息和RLC PDU的连续个数传输至脂C; Continuous RLC PDU header / tail serial number of the RLC PDU and the RLC PDU is transmitted to the number of consecutive aliphatic C HS-DSCH data source cell base station when the HSDPA UE performing hard handoff you will need deleted;

所述传输至RNC的序列号信息的数量和连续个数的数量与需要删除的HS-DSCH数据中RLC PDU的连续段的数量相同。 The same number of successive segments of the RLC PDU is transmitted to the RNC number and the serial number to the number of number of consecutive HS-DSCH data to be deleted. 对于透明模式的业务,所述步骤b包括:源小区基站在执行UE的HSDPA硬切换时,将需要删除的HS-DSCH数据中的RLC PDU的个数传输至RNC。 For transparent mode service, said step b comprises: the number of HS-DSCH data source cell base station when the UE performs hard handover HSDPA, will be deleted in the RLC PDU is transmitted to the RNC.

所述步骤b中需要删除的数据的信息通过IUB 口信令或IUB 口数据帧传專餘至脂C。 Step b the information data to be deleted by the IUB interface IUB interface signaling or data frames transmitted over dedicated to fat C.

所述IUB口信令包括:无线链路重配置响应消息。 The IUB interface signaling comprising: a radio link reconfiguration response message.

本发明提供的一种高速下行包接入硬切换系统,包括:无线网络控制器RNC、源小区基站和目标小区基站,其特征在于,RNC中设置有备份单元和备份数据发送模块,源d、区基站中设置有信息传输模块; The present invention provides one kind of speed downlink packet access system hard handover, comprising: the RNC radio network controller, the source cell and the target cell base station, characterized in that, the RNC is provided with a backup unit and a backup data transmission module, a source d, cell base station is provided with information transmitting module;

备份单元:用于在UE进行高速下行包接入HSDPA硬切换前,开始对该UE 的高速下行共享信道HS-DSCH数据进行备份; Backup unit: a high speed downlink packet access for hard handover before the HSDPA, a high speed downlink shared channel HS-DSCH data to the UE starts back up in the UE;

信息传输模块:用于将源小区基站中由于该UE的HSDPA硬切换而未能发出并需要删除的数据的信息传输至备份数据发送模块; Information transmission module: the source cell to transmit information for base station of the UE since the HSDPA hard handover and need not be issued to delete the backup data to the data transmitting module;

备份数据发送模块:根据信息传输模块传输来的信息,将备份单元备份的相应HS-DSCH数据发送至目标小区基站。 Backup data sending module: The information transmitted from the information transmitting module, the corresponding HS-DSCH data is transmitted to the backup unit backup target cell base station.

所述备份单元包括: The backup unit comprises:

备份通知模块:用于在UE处于软切换区域后,通知备份模块;或者用于在UE的最佳小区和次最佳小区的P-CPICH/S-CPICH满足预定条件时,通知备份模块开始进行数据备份; Backup notifying module: for the UE in a soft handover region, the notification backup module; cell or for a UE at the optimum times and best cell P-CPICH / S-CPICH predetermined condition is satisfied, the notification start backup module data backup;

备份通知模块还用于:在UE离开软切换区域或者UE完成HSDPA硬切换时,通知备份模块停止进行数据备份; Backup notification module is further configured to: leave a soft handover region in the HSDPA UE or UE hard handover is complete, a notification to stop backing up data backup module;

备份模块:用于在接收到备份通知模块的开始进行数据备份的通知后,开始对该UE的高速下行共享信道HS-DSCH数据进行备份,在接收到备份通知模块的停止进行数据备份的通知后,停止对该UE的高速下行共享信道HS-DSCH数据进行备份。 After notification data for backup in a backup start notification receiving module, the backup starts the high-speed downlink shared channel, HS-DSCH data of the UE, notifies the backup data in the backup stop receiving notifications module: backup module , the UE stops the high-speed downlink shared channel HS-DSCH data backup.

所述备份模块包括:锾存子模块:用于为UE正在进行的各业务均设置对应的缓存区域; 备份子模块:用于在接收到备份通知模块的开始进行数据备份的通知后, The backup module comprising: a storage sub-module fines: a UE for ongoing operations are provided corresponding to the respective buffer area; backup submodule: means for notifying the backup data in the backup start notification receiving module,

将RNC发送至源小区基站的该UE各业务的HS-DSCH数据对应存储在相应的 The HS-DSCH data sent by the RNC to the source cell base station corresponding to each service of the UE stored in a corresponding

緩存区域中,在接收到备份通知模块的停止进行数据备份的通知后,停止上述 After the buffer area, upon receiving the notification module backup data backup stop notification, stops the

数据备份过程。 Data backup process.

所述信息传输模块包括:确定信息子模块和传输子模块; 确定信息子模块:用于将需要删除的HS-DSCH数据中连续RLC PDU的首 The information transmission module comprising: determining information sub-module and a transmission sub-module; determining information sub-module: for the HS-DSCH data to be deleted in the first RLC PDU continuous

/尾RLC PDU的序列号信息和RLC PDU的连续个数传输至传输子模块,将基 / Serial number information and the number of consecutive transmission end of the RLC PDU to the RLC PDU transmission sub-module, the group

于透明模式业务的、需要删除的HS-DSCH数据中RLC PDU的个数传输至传输子模块; A transparent mode service, HS-DSCH data to be deleted in the number of the RLC PDU is transmitted to the transmission sub-module;

传输子模块:用于将确定信息子模块传输来的信息通过IUB 口信令或IUB 口数据帧传输至备份数据发送模块。 Transmission sub modules: sub module for determining information to transmit information via the IUB interface IUB interface signaling or data frames transmitted to the backup data transmission module.

通过上述技术方案的描述可知,本发明通过使RNC在UE即将进行高速下行包接入硬切换时,对UE各业务的HS-DSCH数据进行备份,使源小区基站在删除UE的HS-DSCH数据后,不需要接收端l正发送RLC层重传请求,发送端RLC 就能够将其备份的相应数据传输至目标小区基站,避免了RLC层重传的过程, 并且进一步避免了因为大量数据丟失,接收端UE检测到数据丢失不断请求重传、RNC不断给目标基站发送大量内容重复的重传数据的无效重传问题,由于避免了RLC层的重传过程,因而避免了数据传输时延大,对于UM, TM业务, 本发明避免了数据丢失现象;本发明中的RLC通过为各业务数据分别设置緩存区域、并根据UE各业务的下行调度速率、RLC Status PDU的返回速度等来确定RLC备份UE业务数据的緩存区域的大小,使RLC能够方便地对备份数据占用的緩存区域进行管理;通过采用UE处于 By the above technical solution described above, the present invention is that the RNC through a high speed downlink packet access upcoming hard handover UE, HS-DSCH data to the UE on each of the backup service, so that the source cell base station data in the HS-DSCH UE deleted after the receiving end does not need to send l n RLC layer retransmission request, the transmitting side RLC can be backed up to a target cell corresponding to the data transmission base station, to avoid RLC layer retransmission process, and further avoids data loss because of a large amount, receiving terminal UE detects loss of data and requests for retransmission, the RNC continuously transmits a large number of invalid retransmission problem of duplicate content retransmission data to the target base station, by avoiding the retransmission process of the RLC layer, thus avoiding a large data transmission delay, for UM, TM service, the present invention avoids the data loss; in the present invention, RLC by setting a buffer area for the service data, and according to the downlink scheduling rate of the UE each service, RLC Status PDU return speed determined RLC backup UE buffer size of the service data area, so that can be conveniently RLC buffer area occupied by the backup data management; by the UE is using 软切换区域、最佳小区次最佳小区满足的预定条件等方法来使RLC开始对UE的业务数据进行备份、停止对UE的业务数据进行备份,避免了RLC对不必要的UE的业务数据进行备份的现象;从而通过本发明提供的技求古棄卖现了节约网络资源,提高数据传输速率,提高用户满意度的目的。 Soft handover region, the predetermined sub-optimal conditions, the best cell to make the cell satisfying the methods RLC service data to the UE starts back up, the UE stops the service data backup, avoids unnecessary RLC service data of the UE is backup phenomenon; so that by the present invention provides ancient techniques seek to sell now abandoned the save network resources, improve the data transmission rate, the purpose of improving the user satisfaction.

附图说明 BRIEF DESCRIPTION

图i是下行数据从RLC层到MAC-hs实体的数据格式变化示意图; 图2是本发明实施例的高速下行包接入硬切换装置示意图。 I is a diagram illustrating a data format of FIG MAC-hs entity changes to the downlink data from the RLC layer; FIG. 2 is a schematic view of a high speed downlink packet access device embodiment of the present invention is a hard handover.

具体实施方式 Detailed ways

在UE完成HSDPA硬切换后,如果RNC能够及时的将UE源小区基站中删除的数据主动传输至UE的目标小区基站,对于AM业务来说,则能够避免由于HSDPA硬切换而引起的RLC层重传,且能够降低AM业务在HSDPA硬切换后的数据传输时延;对于UM、 TM业务来说,则能够避免由于HSDPA硬切换而引起的数据丢失。 After completion of the HSDPA UE hard handover, if the RNC is able to promptly delete the UE in the source cell base station active data transmission station UE to the target cell, for the AM service, the RLC layer can be avoided since the hard handover due weight HSDPA pass, and can reduce the data transmission delay of the AM service in a hard handover HSDPA; for UM, TM business, the data can be avoided since the hard switching loss due to HSDPA.

因此,本发明的主要技术方案为:在UE进行高速下行包接入HSDPA硬切换前,无线网络控制器RNC开始对该UE的高速下行共享信道HS-DSCH数据进行备份,源小区基站将由于该UE的HSDPA硬切换而未能发出并需要删除的数据的信息传输至RNC, RNC根据源小区基站传输来的信息,将其备份的相应HS-DSCH数据发送至目标小区基站。 Thus, the main aspect of the present invention are: high speed downlink packet access before the hard handover in the HSDPA UE, a high speed downlink shared data channel HS-DSCH radio network controller RNC to the UE starts back up, since the source cell base station information HSDPA transmission of the UE fails to hard handover needs to be removed and sent to a data RNC, RNC according to the information transmitted from the source cell base station, the corresponding HS-DSCH data is transmitted to the backup target cell base station.

下面对本发明提供的技术方案进行详细说明。 Next, the present invention provides a technical solution will be described in detail.

首先,本发明中的RNC需要为即将进行HSDPA硬切换的UE进行HS-DSCH 数据备份。 First, in the present invention, RNC needs to be backed up as HS-DSCH data for HSDPA UE upcoming hard handover. RNC可以在UE处于软切换区域时,确定UE即将进行HSDPA硬切换, 并开始为该UE进行HS-DSCH数据备份。 RNC when the UE may be in a soft handover region, forthcoming HSDPA UE determines hard handoff, and initiates the HS-DSCH UE for data backup. RNC也可以在UE的最佳小区和次最佳小区满足预定条件时,确定UE即将进行HSDPA硬切换,并开始为该UE进行 RNC when a predetermined condition may be satisfied in the best cell and the next best cell of the UE, determines the HSDPA UE upcoming hard handover, the UE and starts

的具体情况来设置,本发明不限制确定UE即将进行HSDPA硬切换的方法。 Setting situation, the present invention is not limited determining method HSDPA UE upcoming hard handover. 上述预定条件可以为:UE的最佳小区和次最佳小区的P-CPICH的Ec/NO差值小子预定门限、且该差值持续减小;上述预定条件也可以为:UE的最佳小区和次最佳小区的S-CP】:CH的Ec/NO差值小于预定门限、且该差值持续减小。 The predetermined condition may be: the best cell and the next best cell UE to the P-CPICH Ec / NO kid predetermined difference threshold, and the difference continues to decrease; and the predetermined condition may be as follows: the best cell of the UE and sub-optimal cell S-CP]: CH of Ec / NO value is less than a predetermined threshold, and the difference continues to decrease. 本发明中的预定条件、预定门限等可以根据实际网络的情况来确定。 In the present invention, the predetermined condition, the predetermined threshold and the like may be determined according to the actual network.

RNC可以通过UE上报的测量事件报告的方法来得知UE的最佳小区和次最佳小区是否满足预定条件。 RNC can be measured by the method reported by the UE to know whether the event report best cell and the next best cell of the UE satisfies a predetermined condition. 这里的测量事件可以为新定义的测量事件,也可以为现有的其他测量事件报告。 Here you can measure event can be reported as a new measurement event defined for other existing measurement event. 新定义的测量事件可以称为"下行硬切换准备事件"。 The new measurement event can be defined as "hard handoff ready downstream events." UE在检测到其最佳小区和次最佳小区的P-CPICH (主公共导频信道) /S-CPICH (辅助公共导频信道)的Ec/NO差值小于预定门限、且该差值持续减小时,向RNC发送"下行硬切换准备事件"测量报告。 The UE detects its best cell and the next best cell P-CPICH (Primary Common Pilot Channel) / S-CPICH (Secondary Common Pilot Channel) of the Ec / NO value is less than a predetermined threshold, and the difference Length when reduced, transmits to RNC "hard handover preparation downlink event" measurement report. UE也可以设置新的域值, 利用现有的其他测量报告将其测量到的信息上报至RNC。 The UE may also set the new threshold, using other existing measurement report information to the measurement report to the RNC. 这样,RNC在接收到这个测量事件对应的测量^艮告后,确定UE即将进行HSDPA^5更切换,并开始为该UE进行HS-DSCH数据备份。 Thus, in the RNC receives this measurement event corresponding measurement report Gen ^ after determining UE HSDPA ^ 5 more upcoming handover, and initiates the HS-DSCH UE for data backup.

RNC存储该UE的各业务的备份HS-DSCH数据的方式有多种,如可以为该UE的各业务的HS-DSCH数据分别设置緩存区域,这样,不同的业务数据可以存储在其对应的緩存区域中。 HS-DSCH data backup RNC stores the operational mode of the UE variety, such as the buffer area may be provided for the HS-DSCH traffic data for each UE, respectively, so that different services can be stored in its corresponding cache area.

当不同的业务数据存储在不同的緩存区域中时,RNC需要提前为每个业务分配备份HS-DSCH数据的緩存大小。 When different service data is stored in a different buffer area, RNC in advance of the backup buffer size assigned to each HS-DSCH traffic data.

RNC为UE的各业务提前分配緩存大小的方法有多种,下面主要介绍两种为UE的业务分配缓存大小的方法。 There are several ways RNC for the service of the UE buffer size allocated in advance, the following describes two main methods for the UE cache size distribution business.

方法一、RNC确定UE正在进行的各业务的下行调度速率Ri,这里,RNC A method, RNC UE determines the downlink scheduling rate of each ongoing service Ri, here, RNC

MAC层传输来的MAC-STATUS-Ind消息中获得UE正在进行的各业务的下行调度速率Ri。 Transmitted from the MAC layer MAC-STATUS-Ind message obtained in each UE ongoing downlink traffic scheduling rate Ri. RNC还需要确定出从开始为UE备份数据到该UE开始进行HSDPA硬切换之间的时间T, RNC可以根据UE的最佳小区和次最佳小区的导频强度变化速率估计出从开始为UE备份数据到该UE开始进行HSDPA硬切换之间的时间T, UE的最佳小区和次最佳小区如导频强度最强的两个服务小区。 The RNC also need to determine the start of the data backed up to the UE the UE starts the time T between the hard handover from the HSDPA, the rate of change of intensity estimated RNC from the UE may start frequency according to the best cell of the UE and the guide sub-optimal cell the backup data to the UE starts the time T between the HSDPA hard handover, the best cell and the secondary cell of the UE as the best pilot strength two strongest serving cell. 这样,对于UE的每个业务来说, 一个业务占用的缓存的大小就可以为:Rix丁。 Thus, for each service of the UE, the size of the cache can be occupied by a business that: Rix Ding. 方法一可以适用于AM模式的业务,也可以适用于UM和TM模式的业务。 The method can be applied to the AM mode operations, it may be applied to UM and TM mode operations.

方法二、对于AM模式的业务,RNC可以根据其为UE的某个业务发出polling bit后,RLC Status PDU的返回速度估计出UE的该业务在基站的缓存深度Di,这样,RNC可以将该业务的缓存大小为:DixR,其中,R为一个冗余系数。 The second method for the AM mode of service, the RNC may be issued in accordance with its polling bit for a service of the UE, RLC Status PDU estimate the speed of return of the service that the UE is in cache depth Di of the base station, so, the RNC can be the traffic the cache size is: DixR, wherein, R is a redundancy factor. 不同优先级业务的冗余系数可以相同,也可以不相同。 Redundant coefficients with different priorities may be the same, it may not be the same.

根据当前RNC的緩存状态,如果RNC可用于HSDPA硬切换的緩存空间 The current buffer status of the RNC, if the cache space available for HSDPA RNC hard handover

A// /Vj A // / Vj

大小K不能保障将S2Aj全部緩存下来,则可以根据各业务优先级从高 K size can not guarantee all will S2Aj cached, it can be based on business priorities from each high

到低保障其緩存大小,直到R:NC可用緩存K耗尽为止;其中,M为RNC管理的基站总数,Nj为基站j中即将进行硬切换的业务数,Z)/,/为基站j中业务i的缓存深度。 Low to guarantee its cache size until R: NC K available buffer is exhausted; wherein, M being the total number of base stations managed by RNC, Nj is the number of base station j in the upcoming hard handover traffic, Z) /, / j, the base station i cache depth of business. 在这种情况下,不同优先级业务的冗余系数可以不相同,且冗余系数可以为:业务实际分配的緩存大小伐/与其緩存深度A',/的比值,即 In this case, the redundant coefficients with different priorities may be different and may be a redundancy factor: traffic actually allocated cache size cutting / its cache depth A ', / ratio, i.e.,

汰/ Tide /

根据当前RNC的緩存状态,如果RNC可用于HSDPA硬切换的緩存空间 The current buffer status of the RNC, if the cache space available for HSDPA RNC hard handover

m 勿 Do m

大小K可以保障将S2]A,.;全部緩存下来,在这种情况下,不同优先级业务 K may be the size of the security S2] A,;. All cached, in which case, different priorities

的冗余系数可以相同,且冗余系数为:氛/=一—一—;其中,M为RNC管理 The coefficients may be the same redundancy and redundancy coefficient: atmosphere / = a - a -; wherein, M being managed RNC

SIX SIX

的基站总数,Nj为基站j中即将进行硬切换的业务数,Aj为基站j中业务i 的緩存深度。 The total number of base stations, Nj is the number of base station j in the upcoming hard handover service, Aj cache depth for the base stations in the j i of traffic.

除了上述介绍的两种方法之外,RNC还可以采用为每个业务分配固定大小的緩存区域等方法,为UE的各业务分配緩存区域,在此不再详细介绍。 In addition to the two methods described above, the RNC may employ fixed-size buffer area allocated for each business or the like, for the allocated buffer area of ​​service of the UE, which is not described in detail.

在RNC为UE的各业务分配了緩存区域后,开始对UE各业务的HS-DSCH数振进行务份操作,即RWC为Uh:的HS-DSCH对应的每个MAC-d流数据独立进行 After the RNC cache area for the service of the UE are allocated, the number of starts of the HS-DSCH UE individual services transducer parts service operation, i.e. RWC is Uh: each MAC-d flow data corresponding to the HS-DSCH independently

存储。 storage. RNC可以在向UE的源小区基站发送数据的同时,将这些发送的数据存4诸在MAC-d流对应的緩存区域中。 RNC can send data to the source cell base station of the UE, the data transmitted in the memory 4 all MAC-d flows corresponding to the buffer area. RNC在緩存这些数据时,可以不对MAC-d流的传输模式进行区别,即RNC可以不区别MAC-d流是确认模式业务,还是非确i^ 模式业务。 RNC when the cache data, the transmission mode can not distinguish between MAC-d flow, i.e. without distinction between the RNC may confirm the MAC-d flow mode service, or a non-determined operational mode i ^.

RNC在开始对UE各业务的HS-DSCH数据进行备份之后,需要在一定的时机停止对HS-DSCH数据进行备份。 RNC after the start of the HS-DSCH UE data to back up each service needs to be stopped at a certain time of the HS-DSCH data backup. 当RNC在UE处于软切换区域而开始进行HS-DSCH数据备份时,RNC停止对HS-DSCH数据进行备份的时机可以为:UE 离开软切换区域;当RNC在UE的最佳小区和次最佳小区满足预定条件而开始进 When the RNC and the UE is in a soft handover region starts HS-DSCH data backup, RNC stops the HS-DSCH data backup timing may be: UE leaving a soft handover region; RNC when the UE in the best cell and the next best cells began to enter predetermined condition is satisfied

UE完成HS-DSCH硬切换。 UE completes the HS-DSCH hard handover.

当然,当RMC在UE处干软切换区域而开始进行HS-DSCH数据备份时,RNC 停止对HS-DSCH数据进行备份的时机也可以为:UE完成HS-DSCH硬切换。 Of course, when the soft handover region RMC dry the UE for HS-DSCH starts to back up data, the RNC stops the HS-DSCH data backup may be a timing: UE HS-DSCH hard handover is completed. 同样,当RNC在UE的最佳小区和次最佳小区满足预定条件而开始进行HS-DSCH 数据备份时,RNC停止对HS-DSCH数据进行备份的时机也可以为:UE离开软 Similarly, when the RNC best cell and the next best cell of the UE satisfies a predetermined condition to start the data backup HS-DSCH, HS-DSCH RNC stop timing data may be backed up as: UE leaving soft

在RNC对UE的HS-DSCH数据进行了备份后,RNC应将由于该UE进行HS-DSCH硬切换而使UE的源小区基站未能发出并删除的HS-DSCH数据发送至UE的目标小区基站。 After the RNC for HS-DSCH UE data backed up, the RNC should be hard handover of the UE and the source cell base station can not be issued due to remove the UE for HS-DSCH HS-DSCH data to the UE, the target cell base station . RNC需要从UE的源小区基站上报的消息中获知源小区基站删除了哪些HS-DSCH数据。 RNC needs to know what the source cell base station deletes the HS-DSCH data from the source cell base station reported by the UE message.

源小区基站可以在接收到无线链路重配置消息后,通过Iub口消息或者Iub 口数据帧来向RNC说明该UE的存储在源小区基站的、还没有向UE发送出去的、 删除了的HS-DSCH数据的信息。 A source cell base station may be receiving the radio link reconfiguration message, or a message via Iub interface Iub interface data frame to the RNC will be described is stored in the UE, yet not sent to the UE in the source cell base station, delete the HS -DSCH information data.

源小区基站可以将未能发出而删除了的RLC PDU的SN通知给RNC,以使RNC能够确定需要将其备份的哪些HS-DSCH数据发送给UE的目标小区基站。 A source cell base station may be unable to send and delete the SN of the RLC PDU informs the RNC, the RNC is able to determine that the need to send the HS-DSCH which its backup data to the target cell base station UE. 下行数据从RLC层到MAC-hs实体的数据格式变化如附图l所示。 Downlink data from the RLC layer to change the data format of the MAC-hs entity as shown in figures l.

图l中,高层数据到达RLC层之后,被称为RLCSDU或SDU, RLC SDU在RLC层进行分割/级联后形成RLCPDU。 Figure l after high-level data arrives at the RLC layer, is referred RLCSDU or SDU, RLC SDU segmentation in RLC layer / after the formation of RLCPDU cascade. RLCPDU中包含有序列号SN,序列号SN可以唯一标识一个RLCPDU。 RLCPDU contains the sequence number SN, SN sequence number uniquely identifies a RLCPDU. RLCPDU在MAC层,经过MAC-d实体时,被加上MAC-d头,形成MAC-dPDU, MAC-d PDU再经过MAC-hs实体时,被加上MAC-hs头,形成MAC-hsPDU。 RLCPDU at the MAC layer, MAC-d entity passes, MAC-d header is added to form a MAC-dPDU, MAC-d PDU when the MAC-hs entity then passes, MAC-hs header is added to form a MAC-hsPDU. 从图1中可知,源小区基站可以从MAC-d PDU 或MAC-hs PDU中得到RLC PDU的SN。 As it is seen from FIG. 1, the source cell base station can be obtained from the SN RLC PDU or MAC-d PDU in the MAC-hs PDU.

源小区基站可以将其未能发出而删除了的各RLC PDU的序列号SN传输至RNC。 Each sequence number SN of the RLC PDU transmission source cell base station may be unable to send and to delete the RNC. 为了节约无线传输资源,源小区基站也可以采用如下两种方法将其删除的各RLC PDU的序列号SN发送至RNC。 In order to save radio transmission resources, the source cell base station may also transmit the following two methods to remove each of the RLC PDU sequence numbers SN to the RNC.

方法一、对于采用AM传输模式或UM传输模式的业务,当源小区基站需要 A method for transmission using AM or UM mode traffic transmission mode, when the source cell base station needs

基站可以将第一个没有发送出去的RLC PDU的SN和没有发出去的RLC PDU的个数发送给RNC:源小区基站也可以将最后一个没有发送出去的RLC PDU的SN和没有发出去的RLC PDU的个数发送给RNC。 The number of the first base station may be sent out without the RLC PDU SN not been sent and the RLC PDU is transmitted to the RNC: the source cell base station may be sent out without the last of the RLC PDU SN not been sent and the RLC the number of the PDU transmitted to the RNC.

方法二、对于采用AM传输模式或UM传输模式的业务,当源小区基站需要删除的HS-DSCH数据中的所有RLC PDU为具有多段连续SN的RLC PDU时,源小区基站可以将每个连续段的RLC PDU中的第一个/最后一个没有发送出去的RLC PDU的SN和该连续段中RLC PDU的个数发送给RNC,如果一个连续段的SN和RLC PDU的个数为一组数据的话,源小区基站需要向RNC发送多组SN和RLC PDU的个H When the second method, for the use of AM transmission mode or traffic UM transmission mode, when all the RLC PDU HS-DSCH data source cell base station to be deleted in having a multistage continuous SN of the RLC PDU, the source cell base station may each consecutive segment the first RLC PDU in / last out without transmitting the RLC PDU SN and the number of consecutive segments in the RLC PDU sent to the RNC, if a number of successive segments of the RLC PDU SN and a set of data words the source cell base station needs to transmit multiple sets of SN and the RLC PDU to the RNC a H

当源小区基站删除的HS-DSCH数据为TM (Transparent Mode ,透明模式) 传输模式的业务数据时,源小区基站可以将需要删除的HS-DSCH数据中的所有RLC PDU的个数发送给RNC。 When the number of transmission of all the RLC PDU data HS-DSCH HS-DSCH data source cell base station when the service data is deleted TM (Transparent Mode, Transparent Mode) transmission mode, the source cell base station may need to be deleted to the RNC.

源小区基站可以通过Iub 口信令如无线链路重配置响应消息等,将SN和RLC PDU的个数发送给RNC。 A source cell base station via the Iub interface signaling radio link reconfiguration response message, etc., and sends the RLC PDU number SN to the RNC. 当然,源小区基站也可以采用其他消息,将SN 和RLC PDU的个数发送给RNC。 Of course, the source cell base station may also use other messages, and sends the number SN of the RLC PDU to the RNC.

在上述实施例中,对于采用AM传输模式或UM传输模式的业务,本发明需要删除的数据的信息表现为SN和RLC PDU的个数,对于采用TM传输模式的业务,本发明需要删除的数据的信息表现为RLCPDU的个数。 In the above embodiment, the transmission mode for using AM or UM traffic transmission mode, the present invention is to be deleted is the number of information presentation data and the RLC PDU SN, for the use of traffic transmission mode TM, the present invention requires the deleted data the information is indicative of the number of RLCPDU. 本发明不限制传專lr 至RNC的需要删除数据的信息的表现形式、也不限制需要删除数据的信息传输至RNC的方式,只要使RNC能够得知源小区基站删除了哪些数据即可。 The present invention is not limited specifically lr transmitted to the RNC of the data to be deleted forms of information, nor need to remove restriction information to transmit data to the RNC of embodiment, so long as the source cell base station RNC can know which data can be deleted.

下面以通过无线链路重配置响应消息来传输需要删除数据的信息为例,对源小区基站将需要删除数据的信息传输至RNC的过程进行说明。 Here through a radio link reconfiguration response message to transmit the information data to be deleted, for example, will require the source cell base station deletes the information data transmitted to the RNC process will be described.

消息中包含有"HS-DSCH FDD Information Response (高速下行共享信道的频分双工模式消息响应)"IE (information element,消息内容),在"HS-DSCH FDD Information Response"正中携带源小区基站没有传输完的、删除了的每个MAC-d流的数据如表1所示。 Message includes the "HS-DSCH FDD Information Response (high speed downlink shared frequency division duplexing mode message channel response)" IE (information element, the message content), the base station is not in the "HS-DSCH FDD Information Response" middle carry the source cell each MAC-d flow data is completely transmitted, deleted as shown in table 1. 表li IE/Group Name Pres印ci ["^ange IE Type and Rsferenc Semantics Description 。S s = 笠. Table li IE / Group Name Pres printed ci [ "^ ange IE Type and Rsferenc Semantics Description .S s = Li.

HS-DSCH IMAC-d Flow Specific Information R6spons6 0..<maxn oofMACd Flows > HS-DSCH IMAC-d Flow Specific Information R6spons6 0 .. <maxn oofMACd Flows>

>HS-DSCH MAOd 闩ow ID M 9.2,1.311 — > HS-DSCH MAOd latch ow ID M 9.2,1.311 -

>Binding ID 0 9.2.1.4 一 > Binding ID 0 9.2.1.4 a

>Transport Layer Address 0 9-2/L63 — > Transport Layer Address 0 9-2 / L63 -

>HS-DSCH Initial Capacity Allocation 〇 9.2.1.31H — > HS-DSCH Initial Capacity Allocation billion 9.2.1.31H -

>〃S-DSC〃 "騰W (Ma 0 Report of unsenf制a /n source Wocte fi before hard > 〃S-DSC〃 "Teng W (Ma 0 Report of unsenf made a / n source Wocte fi before hard

》L£A/GT〃 M — "L £ A / GT〃 M -

>>S/V7 /W Sequence ,n unsenf cfafa >> S / V7 / W Sequence, n unsenf cfafa

>>" M /Vumber of consecuf/Ve f?JLC PDL/s nof senf fo//ow/>?gf?LC PDL/ iv欣A/"mbe厂"S虹 >> "M / Vumber of consecuf / Ve f? JLC PDL / s nof senf fo // ow />? Gf? LC PDL / iv Hin A /" mbe plant "S Rainbow

>>.. /W 一 >> .. / W a

/W 一 / W a

-

HS-SCCH Specific Information Response 0..<m3xn oofHSSC CHcodes HS-SCCH Specific Information Response 0 .. <m3xn oofHSSC CHcodes

表l中,斜体字部分表示源小区基站需要删除数据的信息,其中,LENGTH Table l, the italics represent the source cell base station the information data to be deleted, wherein, LENGTH

表示源小区基站向RNC反馈的信息中有多少段,也就是有多少组(SNi, Li); Information indicating the source cell base station to the RNC the number of segments in the feedback, i.e. group number (SNi, Li);

其中,SNi表示删除数据即没有发送至UE的数据的序列号,Li表示SNi之后没有 After which, SNi represents i.e. delete data sequence number to the UE without sending data, Li represents no SNi

发送至UE的连续RLC PDU的个数。 The number of consecutive transmission of the RLC PDU to the UE.

在本发明中,没有发送至UE的数据包括物理层没有传输正确的数据。 In the present invention, data is not transmitted to the UE includes a physical layer data is not transmitted correctly. RNC从源小区基站发送来的信息中确定其备份的HS-DSCH数据中哪些数据是需要发送至目标小区基站的,如根据(SNi, Li)和LENGTH确定其备份的HS-DSCH数据中哪些数据需要发送至目标小区基站。 Information RNC transmitted from the source cell base station in determining which backups HS-DSCH data, which data needs to be sent to the target cell base station, such as to determine which data HS-DSCH data whose backups according to (SNi, Li), and LENGTH It needs to be sent to the target cell base station. RNC从其备份的HS-DSCH数据中读取需要发送至目标小区基站的数据,并直接发送至目标小区基站。 RNC from the HS-DSCH data read backup data needs to be sent to the target cell base station, and sent directly to the target cell base station.

RNC在向目标小区基站发送其备份的HS-DSCH数据后,将緩存区域中的凄丈据清空,再根据上述实施例中描述的"RNC停止HS-DSCH数据备份的时机"来决定是否保留这个緩存区域,如在UE完成HS-DSCH硬切换、且RNC已经将其备份的需要发送至目标小区基站的数据发送至目标小区基站时,RNC清空緩存区域中的数据,并不再保留该緩存区域。 RNC After transmitting HS-DSCH data its backup to the target cell base station, the buffer area is desolate husband It emptied, and then to decide whether to keep this in accordance with "RNC stops HS-DSCH data backup timing" The embodiments described in the buffer area, such as the UE completes the HS-DSCH hard handover and the RNC has to be backed up to the data to be transmitted when the target cell base station transmits to the target cell base station, RNC clears the data in the buffer area, the buffer area and no longer remains .

本发明提供的高速下行包接入硬切换系统,包括:无线网络控制器RNC、 源小区基站和目标小区基站,RNC中设置有备份单元和备份数据发送模块,源小区基站中设置有信息传输模块。 High speed downlink packet access according to the present invention provides hard switching system, comprising: the RNC radio network controller, the source cell base station and the target cell base station, RNC is provided with a backup unit and a backup data transmission module, the source cell base station is provided with information transmission module .

备份单元主要用于:在UE进行高速下行包接入HSDPA硬切换前,开始对该UE的高速下行共享信道HS-DSCH数据进行备份。 Backup unit mainly used: high-speed downlink packet access before the hard handover HSDPA, the backup starts the high-speed downlink shared channel, HS-DSCH data to the UE at the UE. 备份单元可以在UE处于软切换区域时开始对该UE的高速下行共享信道HS-DSCH数据进行备份,也可以在UE的最佳小区和次最佳小区满足预定条件时,开始为该UE进行HS-DSCH数据备份。 When the backup unit may start when the UE is in a soft handover region back up the high-speed downlink shared channel, HS-DSCH data of the UE, the predetermined condition may be satisfied in the best cell and the next best cell of the UE, the UE starts HS -DSCH data backup. 备份单元可以提前为UE各业务的HS-DSCH数据分配相应的緩存区域。 Backup unit may be assigned in advance to the cache area corresponding HS-DSCH traffic data for each UE.

备份单元由备份通知模块和备份模块组成。 Backup unit and a backup by the backup module notifies module.

备份通知模块主要用于:通知备份模块开始对UE的各业务进行数据备份。 Backup module is mainly used to notify: Notification backup module begins each service of the UE for data backup. 如备份通知模块在UE处于软切换区域后,通知备份模块开始对UE的各业务进行数据备份;再如备份通知模块根据UE上报的测量报告中的信息确定UE 的最佳小区和次最佳小区的P-CPICH或者S-CPICH满足预定条件时,通知备份模块开始对UE的各业务进行数据备份;具体可以为:备〗分通知模块在UE 的最佳小区和次最佳小区的P-CPICH或者S-CPICH的Ec/N0差值小于预定门限、且该差值持续减小时,通知备份模块开始对UE的各业务进行数据备份。 The backup module notifies the UE is in a soft handover region, the backup module start notification to each of the data backup service of the UE; Another example is the backup module notifies the UE determines a best cell and the next best cell based on the information reported by the UE measurement reports in when the P-CPICH or S-CPICH predetermined condition is satisfied, the start notification to each backup module for data backup service of the UE; specifically be: Preparation of module notifies〗 points in P-CPICH best cell and the next best cell of the UE in or the S-CPICH Ec / N0 value is less than a predetermined threshold, and when the difference continues to decrease, the backup module start notification to each of the data backup service of the UE. 备份通知模块还应该在不需要对UE的各业务数据进行备份时,通知备裕、 It should also be notified backup module when not in service to each backup data of the UE, the notification prepared Yu,

模块停止备份,如备份通知模块在确定UE离开软切换区域时,通知备份模块停止对该IJE的各业务数据的备份过程;再如备份通知模块在确定UE完成HS-DSCH硬切换时,通知备份模块停止对该UE的各业务数据的备份过程。 Stops the backup module, the notification module as a backup when the UE leaves a soft handover region determines, notifies the backup module stops the backup process of the respective service data IJE; Again backup notification module HS-DSCH hard handover is completed in the UE is determined to notify the backup module stop the backup process each business data UE. 具体如上述方法中的描述。 As specifically described in the above method.

备份模块主要用于:在接收到备份通知模块的通知后,开始对该UE的高速下行共享信道HS-DSCH数据进行备份。 Backup module is mainly used for: after receiving the notification module notifies the backup start the high-speed downlink shared channel, HS-DSCH data to the UE backup. 备份模块在对UE的HS-DSCH数据进行备份前,需要为各业务数据分别分配緩存区域。 Backup module before the UE for HS-DSCH data is backed up, it is necessary for the cache area allocated service data. 备份模块由緩存子模块和备份子模块组成。 By the cache backup module and backup submodule submodules.

緩存子模块主要用于为UE正在进行的各业务均设置对应的缓存区域。 Cache sub-module is mainly used for the UE ongoing operations are provided corresponding to each of the cache area. 缓存子模块可以根据UE正在进行的各业务的下行调度速率Ri,和该UE开始进行HSDPA硬切换之间的时间T来确定业务对应的緩存区域的大小。 Cache sub-module may determine the size of the cache area corresponding to the downlink scheduling service rate of the UE each service ongoing Ri, and the UE starts the time T between the HSDPA hard switched. 緩存子模块也可以根据发出polling bit后,RLC Status PDU的返回速度和冗余系数来确定业务对应的緩存区域的大小。 The cache sub-module may be issued after the polling bit, and redundancy return velocity coefficient corresponding to the service to determine the size of the buffer area of ​​the RLC Status PDU. 緩存子模块在接收到备份通知模块传输来的停止对UE 的各业务进行数据备份的通知、且备份数据发送模块已经将緩存区域中备份的、需要发送至目标小区基站的数据发送至目标小区基站时,緩存子模块清空緩存区域中的数据,并不再保留该緩存区域。 Data buffer sub-module receives the notification backup notification means for communicating to the stop of each service of the UE for data backup, and a backup data transmission module has been backed up in the buffer area, needs to be transmitted to the target cell base station transmits to the target cell base station when clearing the data buffer sub-module in the buffer area, the buffer area and no longer remains. 具体如上述方法中的描述。 As specifically described in the above method.

备份子模块主要用于在接收到备份通知模块的开始对UE的各业务进行数据备份的通知后,将RNC发送至源小区基站的该UE各业务的HS-DSCH数据对应存储在相应的緩存区域中,并在接收到备份通知模块的停止对UE的各业务进行数据备份的通知后,停止对UE的各业务数据进行备份。 Backup sub-module is mainly used for data backup for each notification service of the UE is received at the beginning of the backup modules after the notification, the RNC sends to the UE the source cell base station of each service corresponding to HS-DSCH data stored in the respective cache area after, the backup notification and receiving notification of each service of the UE to stop the data backup module, the traffic data for each UE stops the backup. 具体如上述方法中的描述。 As specifically described in the above method.

信息传输模块主要用于:将源小区基站中由于该UE的HSDPA硬切换而未能发出且需要删除的数据的信息传输至备份数据发送模块,如信息传输模块可以将没有发送出去的、需要删除的RLC PDU的SN信息传输至备份数据发送模块。 Information transmission module is adapted to: transmit information since the source cell base station of the HSDPA UE hard handoff fails to issue and need to delete the backup data to the data transmitting module, such as the information transmission module may not be sent out, need to remove SN information of RLC PDU transmitted to the backup data transmission module.

信息传输模块由确定信息子模块和传输子模块组成。 Module identification information transmitted from the information sub-module and a transmission sub-module.

确定信息子模块主要用于:将需要删除的HS-DSCH数据中连续RLC PDU 的首/尾RLC PDU的序列号信息和RLC PDU的连续个数传输至传输子模块, 如对于采用AM传输模式或UM传输模式的业务,当源小区基站需要删除的HS-DSCH数据中的所有RLC PDU为具有多段连续SN的RLC PDU时,确定信息子模块可以将每个连续段的RLC PDU中的第一个/最后一个没有发送出去的RLC PDU的SN和该连续段中RLC PDU的个数发送给RNC;再如对于透明模式业务来说,确定信息子模块将需要删除的HS-DSCH数据中的所有RLC PDU的个数传输至传输子模块。 Determining information sub-module is mainly used: discontinuous transmission RLC header / tail serial number of the RLC PDU and the number of consecutive PDU to the RLC PDU transmission sub-module HS-DSCH data will be deleted, as transmission mode or for using the AM when the UM service transmission mode, when all data of RLC PDU HS-DSCH in the source cell base station needs to be removed in a continuous segment having a plurality of RLC PDU SN, determining the first information sub-module of each successive segment of the RLC PDU may / last not sent in the RLC PDU number SN and the segment continuously transmits the RLC PDU to the RNC; Another example is the transparent mode service, it is determined that all RLC HS-DSCH data information sub-module will need to be removed in the number of the PDU transmitted to the transmission sub-module. 具体如上述方法中的描述。 As specifically described in the above method.

传输子模块主要用于:将确定信息子模块传输来的信息通过IUB 口的信令传输至备份数据发送^t块、如传输子模块通过Iub 口的信令如无线链路重配置响应消息或者Iub 口数据帧,将SN和RLC PDU的个数发送给RNC。 Transmission sub-module is mainly used: the determining sub-module information transmitted via the signaling information transmitted to the IUB interface ^ t backup data block transmission, such as transmission sub-module radio link reconfiguration response signaling message via the Iub interface or Iub interface data frame, and transmits the number SN of the RLC PDU to the RNC. 具体如上述方法中的描述。 As specifically described in the above method.

备份数据发送模块主要用于:根据传输子模块传输来的信息如根据(SNi, Li)和LENGTH确定备份子模块备份的HS-DSCH数据中哪些数据需要发送至目标小区基站,备份数据发送模块从上述备份的HS-DSCH数据中读取需要发送至目标小区基站的数据-.并直接发送至目标小区基站。 Backup data sending module is used: The information transmission sub-module as transmitted according to (SNi, Li) LENGTH determined and HS-DSCH data backup submodule in which the backup data to be sent to the target cell base station, transmitting the backup data from the module HS-DSCH data read in said backup data of the target cell needs to be sent to the base station - and sent directly to the target cell base station. 具体如上述方法中的描述。 As specifically described in the above method.

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,本发明的申请文件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, the application file as claimed in claim of the present invention include such modifications and variations.

Claims (16)

1、一种高速下行包接入硬切换方法,其特征在于,所述方法包括步骤: a、在用户设备UE进行高速下行包接入HSDPA硬切换前,无线网络控制器RNC开始对该UE的高速下行共享信道HS-DSCH数据进行备份; b、源小区基站将由于该UE的HSDPA硬切换而未能发出并需要删除的数据的信息传输至RNC; c、RNC根据源小区基站传输来的信息,将其备份的相应HS-DSCH数据发送至目标小区基站。 1, a high-speed downlink packet access a hard handover method, wherein, said method comprising the steps of: a, high speed downlink packet access in the user equipment UE before hard handover the HSDPA, the radio network controller RNC to the UE starts high-speed downlink shared channel HS-DSCH data backup; transmission of information b, the source cell base station since HSDPA hard handover of the UE fails to issue and need to delete data to the RNC; c, RNC information from the source cell base station transmissions , which backup data corresponding HS-DSCH is transmitted to the target cell base station.
2、 如权利要求1所述的一种高速下行包接入硬切换方法,其特征在于, 所述步骤a包括:al 、在UE处于软切换区域后,RNC开始对该UE的HS-DSCH数据进行备份;或a2、在UE检测到其最佳小区和次最佳小区满足预定条件时,通知RNC, RNC根据该通知开始对该UE的HS-DSCH It据进行备4分。 2, a high-speed downlink as claimed in hard handover method according to claim 1 packet access, wherein, said step a comprises: al, after the UE is in a soft handover region, the RNC starts HS-DSCH data to the UE backup; or a2, when the UE detects that it best cell and the next best cell satisfies a predetermined condition, notify RNC, RNC starts according to Preparation 4 of 5 for the HS-DSCH it UE according to the notification.
3、 如权利要求2所述的一种高速下行包接入硬切换方法,其特征在于, 所述预定条件包括:最佳小区和次最佳小区的主公共导频信道/辅助公共导频信道P-CPICH/S-CPICH的Ec/N0差值低于预定门限、且该差值持续减小。 3, as claimed in a high-speed downlink packet access according to a hard handover method in claim 2, wherein said predetermined condition comprising: a primary common pilot channel and a secondary pilot channel best cell of the best cell / secondary common pilot channel P-CPICH / S-CPICH of Ec / N0 the difference is below a predetermined threshold, and the difference continues to decrease.
4、 如权利要求1所述的一种高速下行包接入硬切换方法,其特征在于, 所述步骤a还包括下述步骤中的任意一个:UE离开软切换区域时,RNC停止对该UE的HS-DSCH数据进行备份; UE完成HSDPA硬切换时,RNC停止对该UE的HS-DSCH数据进行备份。 4, a high-speed downlink as claimed hard handover method according to claim 1 packet access, wherein, said step a further comprises the steps of any one of: when the UE leaves a soft handover region, the UE stops the RNC HS-DSCH data to be backed up; the UE HSDPA hard handover completion, RNC stops the HS-DSCH UE data backup.
5、 如权利要求1或2或3或4所述的一种高速下行包接入硬切换方法, 其特征在于,所述步骤a中RNC开始对该UE的HS-DSCH数据进行备份的步骤包括:a3、 RNC为UE正在进行的各业务均设置对应的緩存区域; a4、 RNC将其发送至源小区基站的该UE各业务的HS-DSCH数据对应存储在相应的緩存区域中。 5, as claimed in a high-speed downlink packet access hard handover method 1 or 2 or 3 or claim 4, wherein said step a RNC starts the HS-DSCH UE backup data comprises the step of : a3, RNC for the UE ongoing operations are provided corresponding to the respective buffer area; a4, RNC sends to the UE the source cell base station of each service corresponding to HS-DSCH data stored in the respective buffer area.
6、 如权利要求5所述的一种高速下行包接入硬切换方法,其特征在于: 所述步骤a3包括:a31 、 RNC获取UE正在进行的各业务的下行调度速率; a32、 RNC根据各业务的下行调度速率与距离硬切换的时间的乘积确定各业务的緩存区域的大小;或所述步骤a3包括:根据各业务的緩存深度和冗余系数确定各业务的緩存区域的大小。 6, as a high-speed downlink packet access claimed in claim 5 hard handover method, wherein: said step a3 comprises: a31, RNC UE acquires downlink scheduling rates of each service in progress; a32, RNC in accordance with various the product of the downlink scheduling rate traffic from a hard handover time determining the size of the buffer area of ​​each service; a3 or step comprises: determining the size of the buffer area of ​​each service according to the cache depth and redundancy coefficient of each service.
7、 如权利要求6所述的一种高速下行包接入硬切换方法,其特征在于, 所述步骤a32中距离硬切换的时间根据该UE的最佳小区和次最佳小区的导频强度变化速率确定。 7, as claimed in a high-speed downlink packet access according to a hard handover method in claim 6, wherein said step a32 from time-frequency hard handoff according to pilot strength of the best cell of the UE and sub-optimal cell to determine the rate of change.
8、 如4又利要求1所述的一种高速下行包4妾入石更切纟奂方法,其特征在于, 所述步骤b包括:bl 、源小区基站在^M亍UE的HSDPA硬切4灸时,〗夺由于该UE的HSDPA 硬切换而未能发出并需要删除的HS-DSCH数据中的RLC PDU的序列号信息传输至RNC。 8, and 4 as a high-speed downlink packet claims 4 concubine claim 1 further cut into the stone Si Huan, characterized in that said step b comprises: bl, the source cell base station in the hard-switching UE's right foot HSDPA ^ M 4 moxibustion, since HSDPA wins〗 hard handover of the UE fails to issue the information transmission sequence number of the RLC PDU needs to be removed and the HS-DSCH data to the RNC.
9、 如权利要求8所述的一种高速下行包接入硬切换方法,其特征在于, 所述步骤bl包括:源小区基站在执行UE的HSDPA硬切换时,将需要删除的HS-DSCH数据中连续RLC PDU的首/尾RLC PDU的序列号信息和RLC PDU的连续个数传输至RNC;所述传输至RN(:的序列号信息的数量和连续个数的数量与需要删除的HS-DSCH数据中RLC PDU的连续段的数量相同。 9, a high-speed downlink as claimed in hard handover packet access method of claim 8, characterized in that said step bl comprising: HS-DSCH data source cell base station performing HSDPA UE at a hard handover, the need to remove first / Last RLC PDU sequence number information of the RLC PDU and the number of consecutive continuous transmission of the RLC PDU to the RNC; transmitted to the RN (: number and number of consecutive number of the serial number information to be deleted HS- DSCH data in the same number of consecutive segments of the RLC PDU.
10、 如权利要求1所述的一种高速下行包接入硬切换方法,其特征在于, 对于透明模式的业务,所述步骤b.包括:源小区基站在执行UE的HSDPA硬切换时,将需要删除的HS-DSCH数据中的RLC PDU的个数传输至RNC。 10, as a high-speed downlink packet access claimed in claim 1 hard handover method, wherein, for the transparent mode service, said step b comprises: the source cell base station performs hard handover in HSDPA UE will the number of HS-DSCH data to be deleted in the RLC PDU is transmitted to the RNC.
11、 如一又利要求l或2或3或4或8或9或10所述的一种高速下行包接入硬切换方法,其特征在于,所述步骤b中需要删除的数据的信息通过IUB 口信令或IUB 口数据帧传输至RNC。 11, such as a turn or one claims l or 4 or 8 or 9 or 2 or 3 10 hard handover method of high speed downlink packet access, characterized in that, in step b the information data to be deleted by IUB IUB interface port or signaling data frames transmitted to the RNC.
12、 如权利要求U所述的一种高速下行包接入硬切换方法,其特征在于, 所述IUB 口信令包括:无线链路重配置响应消息。 12, U as claimed in claim one kind high speed downlink packet access hard handover method, wherein the IUB interface signaling comprising: a radio link reconfiguration response message.
13、 一种高速下行包接入硬切换系统,包括:无线网络控制器RNC、源小区基站和目标小区基站,其特征在于,RNC中设置有备份单元和备份数据发送模块,源小区基站中设置有信息传输模块;备份单元:用于在UE进行高速下行包接入HSDPA硬切换前,开始对该UE 的高速下行共享信道HS-DSCH数据进行备份;信息传输模块:用于将源小区基站中由于该UE的HSDPA硬切换而未能发出并需要删除的数据的信息传输至备份数据发送模块;备份数据发送模块:根据信息传输模块传输来的信息,将备份单元备份的相应HS-DSCH数据发送至目标小区基站。 13, a high-speed downlink packet access system hard handover, comprising: the RNC radio network controller, the source cell and the target cell base station, characterized in that, the RNC is provided with a backup unit and a backup data transmission module, the source cell base station is provided information transmission module; backup unit: a high speed downlink packet access for hard handover before HSDPA, the backup starts the high-speed downlink shared channel, HS-DSCH data to the UE at the UE; information transmission module: for the source cell base station Since HSDPA hard handover of the UE fails to issue information to be deleted and the transmission data to the backup data sending module; backup data sending module: the information transmitted from the information transmitting module, the corresponding HS-DSCH transmits data backup backup unit base station to the target cell.
14、 如权利要求】3所述的一种高速下行包接入硬切换系统,其特征在于, 所述备份单元包括:备份通知模块:用于在UE处于软切换区域后,通知备份模块;或者用于在UE的最佳小区和次最佳小区的P-CP1CH/S-CPICH满足预定条件时,通知备份模块开始进行数据备份;备份通知模块还用于:在UE离开软切换区域或者UE完成HSDPA硬切换时,通知备份模块停止进行数据备份;备份模块:用于在接收到备份通知模块的开始进行数据备份的通知后,开始对该UE的高速下行共享信道HS-DSCH数据进行备份,在接收到备份通知模块的停止进行数据备份的通知后,停止对该UE的高速下行共享信道HS-DSCH数据进行备份。 14, as claimed in claim High Speed ​​Downlink Packet Access] A hard handover system of claim 3, wherein said backup unit comprises: a notification module backup: After the UE is for a soft handover region, notifies the backup module; or when the P-CP1CH / S-CPICH for the best cell and the next best cell of the UE satisfies a predetermined condition, the notification starts backup module for data backup; backup notification module is further configured to: when the UE leaves the UE completes the soft handover region or when the HSDPA hard handover, notifies the backup data backup module stops; backup module: for the notification after receiving the backup data backup start notifying module, a high speed downlink shared channel HS-DSCH data to the UE starts back up in the after receiving the backup stops notifying module notifies the backup data, the UE stops the high-speed downlink shared channel HS-DSCH data backup.
15、 如权利要求14所述的一种高速下,行包接入硬切换系统,其特征在于, 所述备份模块包括:緩存子模块:用于为UE正在进行的各业务均设置对应的緩存区域; 备份子模块:用于在接收到备份通知模块的开始进行数据备份的通知后, 将RNC发送至源小区基站的该UE各业务的HS-DSCH数据对应存储在相应的緩存区域中,在接收到备份通知模块的停止进行数据备份的通知后,停止上述数据备份过程。 15, as claimed in claim 14 at a high-speed, packet access hard line switching system, characterized in that said backup module comprising: a cache sub-module: for each service in progress for the UE are provided corresponding cache region; backup submodule: after receiving the backup for the start notifying module notifies the backup data, corresponding to the HS-DSCH data stored in a source cell base station to the RNC sends the UE each service in the corresponding buffer area in Upon receiving the notification module backup data backup stop notification, stops the data backup process.
16、 如权利要求13或14或15所述的一种高速下行包接入硬切换系统, 其特征在于,所述信息传输模块包括:确定信息子模块和传输子模块;确定信息子模块:用于将需要删除的HS-DSCH数据中连续RLC PDU的首/尾RLC PDU的序列号信息和RLC PDU的连续个数传输至传输子模块,将基于透明模式业务的、需要删除的HS-DSCH数据中RLC PDU的个数传输至传输子模块;传输子模块:用于将确定信息子模块传输来的信息通过IUB 口信令或IUB 口数据帧传输至备份数据发送模块。 16, 13 as claimed in one kind or in claim 14 or 15 high-speed downlink packet access system of a hard handover, wherein said information transmission module comprising: determining information sub-module and a transmission sub-module; determining information sub-module: using the HS-DSCH data to be deleted is continuously transmitted to the RLC header / tail serial number of the RLC PDU and the RLC PDU number PDU continuous transmission sub-module, you will need to delete the HS-DSCH data based on the transparent mode service the number of the RLC PDU is transmitted to the transmission sub-module; transmission sub-modules: sub module for determining information to transmit information via the IUB interface IUB interface signaling or data frames transmitted to the backup data transmission module.
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