WO2005006587A1

WO2005006587A1 - The method and system for confirming the target signal to interference radio of downlink common channel power control

Info

Publication number: WO2005006587A1
Application number: PCT/CN2003/000554
Authority: WO
Inventors: Sheng Liu
Original assignee: Utstarcom (China) Co., Ltd.
Priority date: 2003-07-11
Filing date: 2003-07-11
Publication date: 2005-01-20
Also published as: AU2003255074A1; CN100413222C; CN1788428A

Abstract

The invention discloses a method and system for producing the SIR target value in the open loop power control of the downlink, the method includes the steps as follows: a statistical step in RNC, takes the information which are indicated by the state of PDU from UE and are received by the RLC entity which corresponds to at least one of logic channels DCCH and DTCH bearing in the common transmission channel about whether UE side data PDU receive right or not; another step of obtaining an SIR target value, which sends information about whether UE side data PDU receive right or not to a SIR target value tracking loop in order to gain the SIR target value employed for the open loop power control in the downlink.

Description

用于确定下行公共信道 Used to determine the downlink common channel

功率控制的目标信干比的方法和*** 技术领域 Method and system for target signal-to-interference ratio of power control

本发明涉及码分多址 ( CDMA ) ***中下行链路公共信道功率控制的方法。更具体地说，本发明涉及在下行链路公共信道中采用慢速功率控制技术时目标信干比 ( SIR ) 的确定方法。背景技术 The present invention relates to a method for power control of a downlink common channel in a code division multiple access (CDMA) system. More specifically, the present invention relates to a method for determining a target signal-to-interference ratio (SIR) when a slow power control technique is adopted in a downlink common channel. Background technique

码分多址 ( CDMA ) ***是一个典型的干扰受限***，任何一个用户的有用功率, 都将成为对其他用户的干扰。因此，功率控制技术作为一种重要的减小信道间干扰的手段，在 CDMA*** 中得到了广泛的应用。功率控制根据控制方式的不同，分为闭环功率控制和开环功率控制两大类 _β 其中，闭环功率控制是通过接收端对接收信号干扰比（SIR ) 与其目标值进行比较，并将由此产生的功率控制命令通过反向链路反馈回发送端来进行功率控制的因此仅适用于存在默向无线链路的专用信道；开环功率控制不需要默向信道，它直接由发送端根据一定的策略控制其发射功率，对只存在单向链路的公共类型信道，其功率控制只能通过开环方式进行。与闭环功率控制相比，开环功率控制的控制速率和控制精度都较低。 A code division multiple access (CDMA) system is a typical interference-limited system. The useful power of any one user will become interference to other users. Therefore, power control technology, as an important means of reducing inter-channel interference, has been widely used in CDMA systems. The power control depending on the control mode is divided into closed loop power control and open loop power control wherein the two types of _β, the closed-loop power control is the received signal to interference ratio target value thereof (SIR) and compares the result produced by the receiving end Power control commands are sent back to the sender through the reverse link to perform power control. Therefore, it is only applicable to dedicated channels with silent wireless links. Open loop power control does not require silent channels. It is directly sent by the sender according to a certain policy. To control its transmission power, for a common type channel with only one-way links, its power control can only be performed in an open loop manner. Compared with closed-loop power control, the control rate and control accuracy of open-loop power control are lower.

在 3GPP的宽带码分多址（WCDMA ) ***中，存在多种公共类型的下行物理信道，如公共导频信道（ CPICH ) 、同步信道 ( SCH ) 、第一公共控制物理信道（P-CCPCH ) 、第二公共控制物理信道'（S-CCPCH ) 、寻呼指示信道（PICH ) 、接入指示信道 ( AICH )等。其中，除了 S-CCPCH外，各个下行公共物理信道的功率是与小区的容量和覆盖等网络规划参数相关的 , 一般由网络规划过程确定并以相对固定的功率电平进行发射。 In a 3GPP wideband code division multiple access (WCDMA) system, there are multiple common types of downlink physical channels, such as a common pilot channel (CPICH), a synchronization channel (SCH), and a first common control physical channel (P-CCPCH). , A second common control physical channel '(S-CCPCH), a paging indicator channel (PICH), an access indicator channel (AICH), and the like. In addition to the S-CCPCH, the power of each downlink common physical channel is related to the network planning parameters such as the capacity and coverage of the cell. The network planning process determines and transmits at a relatively fixed power level.

S-CCPCH 用于承载前向接入信道 ( FACH ) 和寻呼信道 ( PCH ) 两种传输信道，它既可以单独承载 FACH或 PCH, 也可以同时复用这两种传输信道。其中， PCH 用于承载逻辑信道 PCCH(寻呼控制信道）， FACH用于承载广播控制信道 ( BCCH )、公共控制信道 ( CCCH ) 、公共业务信道 ( CTCH ) 、专用控制信道 ( DCCH ) 、专用业务信道 ( DTCH ) 等多种逻辑信道。关于这些信道及其复用方式的详细描述，可以参考 3GPP 的规范 3GPP TS 25.211、 3GPP TS 25.321, 3GPP TS 25.301、 3GPP TS 25.302等文档，关于 S-CCPCH的用法，可以参考 3GPP的规范 TS 25.331、 TS 25.302、 TS 25.304等文档。 S-CCPCH is used to carry two types of transmission channels: forward access channel (FACH) and paging channel (PCH). It can either carry FACH or PCH alone, or multiplex these two transmission channels at the same time. Among them, PCH is used to carry the logical channel PCCH (paging control channel), and FACH is used to carry the broadcast control channel (BCCH), common control channel (CCCH), common service channel (CTCH), dedicated control channel (DCCH), and dedicated services Channel (DTCH) and other logical channels. For detailed descriptions of these channels and their multiplexing modes, please refer to 3GPP specifications 3GPP TS 25.211, 3GPP TS 25.321, 3GPP TS 25.301, 3GPP TS 25.302, and other documents. For the usage of S-CCPCH, please refer to the 3GPP specification TS 25.331, TS 25.302, TS 25.304 and other documents.

在 S-CCPCH承载的 FACH所承载的逻辑信道中， DTCH和 DCCH 仅存在于无线资源控制层 ( RRC ) 的连接模式 ( RRC Connected Mode ) 的 CELL_FACH状态中。一个 FACH可能承载不同用户设备（UE )的 DTCH和 DCCH逻辑信道，通过 FACH 信道的媒体接入控制（MAC ) 头的 UE-ID域来区分不同的用户 _s 其中， DCCH用于承载处于 CELL— FACH状态下的 RRC连接激活的 UE的 RRC信令 DTCH则用于承载小数据量的用户魏据 _Θ 关于 RRC信令及其不同模式与状态的详细描述，可以参考 3GPP 的规范 TS 25.331文档。 In the logical channel carried by the FACH carried by the S-CCPCH, the DTCH and DCCH only exist in the CELL_FACH state of the RRC Connected Mode of the radio resource control layer (RRC). A FACH may carry different user equipment (UE), DCCH and DTCH logical channels are distinguished by different users _s UE-ID header field of FACH channel medium access control (MAC) wherein, in the CELL-FACH for carrying DCCH The RRC signaling DTCH of the UE activated by the RRC connection in the state is used for users carrying a small amount of data. According to _Θ for a detailed description of RRC signaling and its different modes and states, please refer to the 3GPP specification TS 25.331 document.

与 CELL— DCH状态下无线网络控制器 ( RNC ) 需要为一个 RRC连接分配一对专用物理信道相比， CELL— FACH状态下的多个 UE的下行链路可以分时复用一个 S-CCPCH,上行链路则通过随机接入信道 ( RACH )传输数据或信令，因此，采用 CELL— FACH 状态的 RRC连接可以减少对有限的无线资源的占用，从而有效提高***容量。在无线资源管理器 ( RRM )策略中，对那些上、下行都只需要发送少量数据的 UE, 通过控制其进入 CELL一 FACH 状态，而不是 CELL一 DCH状态, 来提高无线资源的利用率。然而，如果不对 S-CCPCH进行适当的功率控制，为了使小区内的所有用户都能正确地接收，所有的 S-CCPCH只能简单地以足够高的相对固定的功率发送，以保证对整个小区的覆盖。这样，当处于 CELLJFACH状态的 UE达到一定的数量后，由此产生的干扰将较大地影响***性能，从而抵消由于采用 ACH/FACH进行小数据量传输而带来的好处。 Compared with the case where the radio network controller (RNC) in the CELL-DCH state needs to allocate a pair of dedicated physical channels for an RRC connection, the downlink of multiple UEs in the CELL-FACH state can time-multiplex a S-CCPCH, The uplink transmits data or signaling through a random access channel (RACH). Therefore, the RRC connection in the CELL-FACH state can reduce the occupation of limited wireless resources, thereby effectively increasing the system capacity. In the Radio Resource Manager (RRM) strategy, for those UEs that only need to send a small amount of data in the uplink and downlink, it is controlled to enter CELL_FACH State, not CELL-DCH state, to improve the utilization of wireless resources. However, if proper power control is not performed on the S-CCPCH, in order for all users in the cell to receive it properly, all S-CCPCH can only be simply transmitted with a sufficiently high and relatively fixed power to ensure the entire cell Of coverage. In this way, when the number of UEs in the CELLJFACH state reaches a certain number, the resulting interference will greatly affect the system performance, thereby offsetting the benefits brought by using ACH / FACH for small data volume transmission.

因此, 只有对 S-CCPCH采取一定的功率控制措施，才能有效改善下行链路性能。如前所述， S-CCPCH是公共类型的信道, 没有对应的专用上行信道，因此，只能采用开环功率控制的方式，实现慢速的功率控制。在题为 "码分多址***中下行链路公共信道开环功率控制方法" 的中国专利申请第 02143793.9号中提出了一种针对 FACH承载的 DCCH和 DTCH进行慢速功率控制的方法。 Therefore, only by adopting certain power control measures on the S-CCPCH can the downlink performance be effectively improved. As mentioned earlier, S-CCPCH is a public type channel and has no corresponding dedicated uplink channel. Therefore, only open-loop power control can be used to implement slow power control. In Chinese Patent Application No. 02143793.9 entitled "Downlink Public Channel Open-Loop Power Control Method in Code Division Multiple Access System", a method of slow power control for DCCH and DTCH over FACH is proposed.

在该方法的实施中，要求为每个处于 CELL— FACH 状态且 DCCH/DTCH已建立的 ϋΕ，建立一个相应的 SIR跟踪环路，该 SIR跟踪环路与闭环功率控制中的外部功率控制环路类似图 1 给出了一个典型的 SI 跟踪环路的结构框图 _Θ 为了跟踪 UE当前所需的 SIR， UE应当在 RACH承载的上行 DCCH上，将接收的 FACH上的 DCCH和 DTCH的接收质量测量值，通过 RRC测量报告上报给 RNC，而 RNC则将该接收质量测量值作为 SIR跟踪环路的输入，从而得到 UE当前所需的 SIR. 其中， UE对 FACH 上的 DCCH和 DTCH的接收质量的测量值，典型的就是传输块错误率 ( BLER ) 。 In the implementation of this method, it is required to establish a corresponding SIR tracking loop for each of the CELL_FACH state and DCCH / DTCH established, this SIR tracking loop and the external power control loop in closed-loop power control Figure 1 shows similar DCCH on reception quality of a block diagram of a typical tracking loop _Θ SI the UE is currently required to track the SIR, the UE should be carried on the RACH uplink DCCH, and the DTCH FACH received measurements Report to the RNC through the RRC measurement report, and the RNC uses the received quality measurement value as the input of the SIR tracking loop to obtain the SIR currently required by the UE. Among them, the UE measures the reception quality of the DCCH and DTCH on the FACH The value is typically the transmission block error rate (BLER).

但是，在当前的 WCDMA标准中， UE的测量报告尚不支持下行链路 BLER的测量。因此，为了能在当前的 WCDMA*** 中有效实施下行链路公共信道开环功率控制方法，需要解决基于当前的 WCDMA 标准而获得 FACH 承载的特定 UE 的 DCCH/DTCH所需要的目标 SIR的问题。发明内容 However, in the current WCDMA standard, the measurement report of the UE does not yet support the measurement of the downlink BLER. Therefore, in order to effectively implement an open loop power control method for a downlink common channel in a current WCDMA system, it is necessary to solve The current WCDMA standard has the problem of obtaining the target SIR required by the DCCH / DTCH of a specific UE carried by FACH. Summary of the invention

本发明正是针对上述问题，提出了一种基于当前 WCDMA标准的在下行链路公共信道中采用慢速功率控制技术时目标信干比 ( SIR ) 的产生方法和***。 The present invention is directed to the above problems, and proposes a method and system for generating a target signal-to-interference ratio (SIR) when a slow power control technology is adopted in a downlink common channel based on the current WCDMA standard.

根据本发明的方法包括如下步骤: 一个统计步骤，在 RNC 中，统计承载在公共传输信道上的逻辑信道 DCCH和 DTCH二者中至少一个对应的 RLC实体接收的来自 UE的状态 PDU指示的关于 UE侧数据 PDU接收正确与否的信息;以及一个 SIR目标值获得步骤，将所述关于 UE侧数据 PDU接收正确与否的信息送入一个 SIR目标值跟踪环路，以获得 SIR目标值。 The method according to the present invention includes the following steps: A statistical step, in the RNC, statistics on the UE about the UE received by the RLC entity corresponding to at least one of the logical channels DCCH and DTCH carried on the common transmission channel received from the UE. The side data PDU receives correct information; and an SIR target value obtaining step, the information about whether the UE side data PDU is received correctly is sent to a SIR target value tracking loop to obtain a SIR target value.

根据本发明的***包括：一个统计装置，位于 RNC 中，用于统计承载在公共传输信道上的逻辑信道 DCCH和 DTCH二者中至少一个对应的 RLC实体接收的来自 UE的状态 PDU指示的关于 UE侧数据 PDU接收正确与否的信息；以及一个 SIR目标值跟踪环路₅根据所述关于 UE侧数据 P U接收正确与否的信息输出用于下行链路开环功率控制的 SIR目标值。 The system according to the present invention includes: a statistics device, located in the RNC, for counting UE-related status PDU indications received from the UE received by the RLC entity corresponding to at least one of the logical channels DCCH and DTCH carried on the common transmission channel. The side data PDU receives correct information; and an SIR target value tracking loop ₅ outputs an SIR target value for downlink open loop power control according to the information about whether the UE side data PU receives correct or not.

在本发明中，既可以同时针对承载在公共传输信道上的逻辑信道 DCCH和 DTCH统计 UE侧数据 PDU接收正确与否的信息，也可以只针对 DTCH或 DCCH中的一个进行所述统计。应当理解，为了提高统计的准确程度，最好同时对 DTCH和 DCCH进行统计。 In the present invention, both the logical channel DCCH and the DTCH carried on the common transmission channel can be counted at the same time whether the information of the UE side data PDU is received correctly or not, or the statistics can be performed only for one of the DTCH or the DCCH. It should be understood that in order to improve the accuracy of statistics, it is best to perform statistics on both DTCH and DCCH.

需要指出的是，关于 UE侧数据 PDU接收正确与否的信息，根据本发明的一种优选实施方式，是指 UE错误接收的数据 PDU 数目以及总的发送的数据 PDU数目 ,而根据本发明的另一种优选实施方式，是指 UE正确接收的和错误接收的数据 PDU的数目。附图说明 It should be noted that information about whether the UE-side data PDU is received correctly, according to a preferred embodiment of the present invention, refers to the number of data PDUs received by the UE by mistake and the total number of data PDUs transmitted. Another preference The implementation manner refers to the number of data PDUs that the UE receives correctly and incorrectly. BRIEF DESCRIPTION OF THE DRAWINGS

通过结合附图阅读本发明的详细说明，有关本发明的上述优点以及其他优点将变得更加清楚、明确。在附图中: By reading the detailed description of the present invention in conjunction with the accompanying drawings, the above advantages and other advantages of the present invention will become more clear and clear. In the drawings:

图 1是典型的 SIR跟踪环路的框图; Figure 1 is a block diagram of a typical SIR tracking loop;

图 2是无线接口协议结构的示意图; Figure 2 is a schematic diagram of a wireless interface protocol structure;

图 3是确认模式下 RLC对等层关系的示意图; Figure 3 is a schematic diagram of the RLC peer layer relationship in the confirmation mode;

图 4是确认模式下 RLC数据协议数据单元结构的示意图; 图 5是确认模式下 RLC状态协议数据单元结构的示意图; 图 6是根据本发明的 SIR目标值产生方法的流程图; Figure 4 is a schematic diagram of the structure of the RLC data protocol data unit in the confirmation mode; Figure 5 is a schematic diagram of the structure of the RLC state protocol data unit in the confirmation mode; Figure 6 is a flowchart of the method for generating an SIR target value according to the present invention;

图 7是根据本发明的 SIR目标值产生***的框图; Figure 7 is a block diagram of an SIR target value generation system according to the present invention;

图 8是根据本发明的一种优选实施方式的 SIR目标值产生方法；以及 8 is a SIR target value generating method according to a preferred embodiment of the present invention; and

图 9是根据本发明的另一种优选实施方式的 SIR目标值产生方法。具体实施方式 Fig. 9 is a method for generating an SIR target value according to another preferred embodiment of the present invention. detailed description

以下将参照附图对本发明的优选实施方式进行描述。 Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

为了更清楚地阐述本发明，这里首先对 WCDMA的无线接口协议结构加以说明。如图 2所示，在 WCDMA无线接口协议中，位于底层的是物理层 ( PHY )，之上分别是媒体接入控制层 ( MAC ) 和无线链路控制层 ( RLC ) ，无线资源控制 ( RRC )层负责对这些协议层的控制。 MAC层与 PHY层间的信道为传输信道， MAC 层与 RLC层之间的信道为逻辑信道。对一个特定的 UE，可能存在多个 RLC实体，即该 UE不同的逻辑信道分别对应不同的 RLC 实体。在 WCDMA中， RLC层支持三种模式：透明模式（TM ) 、非确认模式 (丽)和确认模式 ( AM ) 。其中 TM模式和 UM模式主要用于时延比较敏感的实时业务， AM模式主要用于传输非实时的分组类型业务。图 3给出了确认模式下 RLC对等层的示意图，由图 3可以看到，一个 AM模式的 RLC ( AM-RLC )实体包含发送和接收两个部分的功能， AM-RLC 实体可向对等的 AM-RLC实体发送查询信息，而对等的 AM-RLC实体则予以应答。图 4所示为 AM模式 RLC数据协议数据单元 (数据 PDU ) 的结构。有关图中各个域的详细定义，可以参考 3GPP的标准 TS 5.322。在图 4中，域 "P" 表示查询比特, 当该比特为 1时，表示请求 RLC对等层的接收端的状态报告，为 0则表示不请求 RLC 对等层的接收端的状态报告。当 RLC对等层的接收端收到 P=l 的数据 PDU时，即通过发送状态 PDU予以应答。 In order to explain the present invention more clearly, the structure of the wireless interface protocol of WCDMA is described here first. As shown in FIG. 2, in the WCDMA wireless interface protocol, the physical layer (PHY) is located at the bottom, and the medium access control layer (MAC) and the radio link control layer (RLC), and the radio resource control (RRC) are located above. ) Layer is responsible for the control of these protocol layers. The channel between the MAC layer and the PHY layer is a transmission channel, and the channel between the MAC layer and the RLC layer is a logical channel. For a specific UE, there may be multiple RLC entities, that is, different logical channels of the UE correspond to different RLC entities. In WCDMA, the RLC layer supports three modes: transparent mode (TM), non-acknowledgment mode (LAI), and acknowledgement mode (AM). Among them, TM mode and UM mode are mainly used for delay-sensitive real-time services, and AM mode is mainly used for transmitting non-real-time packet-type services. Figure 3 shows a schematic diagram of the RLC peer layer in the confirmation mode. As can be seen from Figure 3, an AM mode RLC (AM-RLC) entity includes two functions of sending and receiving, and the AM-RLC entity can send to the peer The peer AM-RLC entity sends query information, while the peer AM-RLC entity responds. FIG. 4 shows the structure of an AM mode RLC data protocol data unit (data PDU). For detailed definitions of each field in the figure, please refer to the TS 5.322 standard of 3GPP. In FIG. 4, the field "P" indicates a query bit. When the bit is 1, it indicates that the status report of the receiving end of the RLC peer layer is requested, and 0 indicates that the status report of the receiving end of the RLC peer layer is not requested. When the receiving end of the RLC peer layer receives a data PDU of P = 1, it responds by sending a status PDU.

在 WCDMA中，定义了多种触发发送端启动状态查询的方式以及多种触发接收端发送状态 PDU的方式在实际中使用哪一种方式或多种方式的组合，取决于具体的实现方案；并且具体使用哪种方式对本发明的实施没有影响 _β 关于这些方式的详细描述和应用方法，可以参考 3GPP 的标准 TS5.322 及工作组文档 TSG-R2-99253等文献。其中，基于一定的查询间隔时间进行查询，或基于每次发送一定数目的数据 PDU后启动查询的方式，是较常用的状态查询的方式，而基于对发送端状态查询进行响应的方式，是接收端触发状态 PDU发送较常用的方式。 In WCDMA, a variety of ways of triggering the initiation of the sender's status query and a variety of ways of triggering the receiver's sending of status PDUs are defined, depending on the specific implementation scheme; and which way the use of the particular embodiment of the present invention does not affect _β detailed description of these methods and application methods, and reference may be TS5.322 working group standard document 3GPP TSG-R2-99253 other literature. Among them, the method of querying based on a certain query interval time or starting the query after sending a certain number of data PDUs each time is a more commonly used status query method, and the method of responding to the status query of the sender is receiving The terminal triggers status PDU sending in a more common way.

图 5所示为 AM模式下 RLC状态协议数据单元 (状态 PDU ) 的结构，有关图中各个域的详细定义, 可以参考 3GPP 的标准 TS5.322, 状态 PDU用于报告两个对等的 AM模式 RLC实体的状态。如图 5所示，状态 PDU由一个或多个超域（SUFI )组成， WCDMA中定义了 SUFI的多种类型，与本发明相关的 SUFI类型有 ACK、 LIST, BITMAP ^ Rlist四种，其中 ACK类型 SUFI 包含一个序号，表示在此序号之前的 PDU均已正确接收。 LIST, BITMAP及 Rlist类型 (在此统称为 NACK类型 ) SUFI则通过不同的表示方式指示发生接收错误的数据 PDU的序号。在 AM模式下，发送端一旦收到 NACK类型 SUFI所指示的错误数据 PDU 的序号，将重新传输这些错误的数据 PDU,因此， AM模式的 RLC 具有自动重传请求 ( ARQ ) 的功能。 Figure 5 shows the structure of the RLC status protocol data unit (status PDU) in AM mode. For detailed definitions of each field in the figure, you can refer to the standard TS5.322 of 3GPP. The status PDU is used to report two peer AM modes. The state of the RLC entity. As shown in FIG. 5, the status PDU is composed of one or more super domains (SUFIs). In WCDMA, multiple types of SUFIs are defined, and the SUFI classes related to the present invention There are four types of ACK, LIST, and BITMAP ^ Rlist. The ACK type SUFI contains a sequence number, indicating that PDUs before this sequence number have been received correctly. LIST, BITMAP, and Rlist types (collectively referred to as NACK types here). SUFI indicates the sequence number of the data PDU in which a reception error occurs through different representations. In AM mode, the sender will retransmit these erroneous data PDUs as soon as it receives the sequence number of the erroneous data PDUs indicated by the NACK type SUFI. Therefore, the RLC in AM mode has the function of automatic retransmission request (ARQ).

如前所述， S-CCPCH可承载 FACH和 PCH两种传输信道，其中， PCH承载逻辑信道 PCCH， FACH上则可复用 BCCH、 CCCH、 CTCH、 DCCH、 DTCH 等多种逻辑信道。作为公共传输信道， FACH可承载不同 UE的逻辑信道 DTCH和 DCCH, 所有承载在 FACH之上的不同 UE的 DTCH和 DCCH均分别对应一个 RLC实体。根据 3GPP标准 TS25.331 , 承载在 DCCH之上的 RHC信令均采用 AM模式的 RLC，而通常在 DTCH/FACH上承载的业务，是非实时的数据业务，数据业务是时延不敏感但对差错敏感的业务，因此一般都采用 AM模式的 RLC 因此，基于上述分析，本发明提出的用于下行链路公共信道慢速功率控制的 SIR目标值产生方法和***是以 AM模式下 RLC的 ARQ功能为基础的。 As mentioned earlier, the S-CCPCH can carry both FACH and PCH transmission channels. Among them, the PCH carries the logical channel PCCH, and FACH can multiplex multiple logical channels such as BCCH, CCCH, CTCH, DCCH, and DTCH. As a common transmission channel, FACH can carry logical channels DTCH and DCCH of different UEs, and all DTCH and DCCH of different UEs carried on FACH correspond to one RLC entity, respectively. According to the 3GPP standard TS25.331, the RHC signaling carried on the DCCH uses RLC in the AM mode, while the services usually carried on the DTCH / FACH are non-real-time data services, and the data services are time-insensitive but not error-sensitive Sensitive services, so RLC in AM mode is generally used. Therefore, based on the above analysis, the method and system for generating SIR target value for slow power control of downlink common channel proposed by the present invention is based on the ARQ function of RLC in AM mode on the basis of.

图 6示出了根据本发明方法的总体流程图。首先，在步驟 S61 中，在 RNC中，统计承载在公共传输信道上的逻辑信道 DCCH 和 /或 DTCH对应的 RLC实体接收的来自 UE的状态 PDU指示的关于 UE侧数据 PDU接收正确与否的信息。接下来，在步骤 S62 中，同一 UE的 DTCH和 /或 DCCH的输出结果被送到一个 SIR 目标值跟踪环路，由其根据预定的 SIR目标值跟踪方式产生用于下行链路公共信道慢速功率控制的 SIR目标值。 Figure 6 shows an overall flowchart of the method according to the invention. First, in step S61, in the RNC, statistics on whether the UE-side data PDU received by the status PDU indicated by the UE received by the RLC entity corresponding to the logical channel DCCH and / or DTCH carried on the common transmission channel is received is correct. . Next, in step S62, the output result of the DTCH and / or DCCH of the same UE is sent to an SIR target value tracking loop, which generates a slow speed for the downlink common channel according to a predetermined SIR target value tracking method. SIR target value for power control.

根据本发明的 SIR目标值的确定方法可由图 7所示的***实现。如图 7所示，在 RNC中，对于承载在公共传输信道上的逻辑信道 DCCH和 /或 DTCH, 由一个统计装置 71来统计来自 UE的状态 PDU指示的关于 UE侧数据 PDU接收正确与否的信息。统计装置 71统计得到的值被送入 SIR目标值跟踪环路 72，以根据预定的 SIR目标值跟踪方式获得 SIR目标值，从而实现慢速功率控制。本领域技术人员应当理解，图 7中所示的连接只表示逻辑上的连接，而且所述各装置既可以通过分立元件以硬件方式实现，也可以通过对处理器编程使其与外部的存储器、输入 /输出装置等部件协作以软件方式实现，还可以以硬件或者软件相结合的方式实现。 The method for determining the SIR target value according to the present invention can be implemented by the system shown in FIG. 7 Now. As shown in FIG. 7, in the RNC, for a logical channel DCCH and / or DTCH carried on a common transmission channel, a statistical device 71 counts whether the UE-side data PDU indicated by the status PDU from the UE is received correctly or not. information. The value obtained by the statistical device 71 is sent to the SIR target value tracking loop 72 to obtain the SIR target value according to a predetermined SIR target value tracking method, thereby implementing slow power control. Those skilled in the art should understand that the connection shown in FIG. 7 only represents a logical connection, and the devices can be implemented in hardware by discrete components, or by programming the processor to connect with external memory, The cooperation of components such as the input / output device is implemented in software, and may also be implemented in a combination of hardware or software.

以下，参照图 8说明本发明的第一优选实施方式。 Hereinafter, a first preferred embodiment of the present invention will be described with reference to FIG. 8.

如图 8所示,在 RNC中 ,对于承载在公共传输信道上的逻辑信道 DCCH和 DTCH,在步骤 S81和 S82，分别统计由所述 DCCH 和 DTCH对应的 RLC实体接收的来自 UE的状态 PDU指示的错误接收的数据 PDU数目 _β 在这里，通过 RNC侧 RRC的控制 RNC侧的 RLC实体发送端可以采用基于一定的查询间隔时间进行查询，或基于每次发送一定数目的数据 PDU后启动查询的方式进行状态查询，对等的 UE侧的 MLC实体接收端则可设置为基于对发送端状态查询进行响应的方式触发状态 PDU的发送。但是，本领域技术人员应当理解, 具体采用哪种触发发送端启动状态查询的方式以及哪种触发接收段发送状态 PDU的方式，取决于具体的实现方案，并且不影响本发明的实施。 As shown in FIG. 8, in the RNC, for the logical channels DCCH and DTCH carried on the common transmission channel, in steps S81 and S82, the statistics of the status PDU indications from the UE received by the RLC entity corresponding to the DCCH and DTCH are respectively counted. The number of erroneously received data PDUs _β is here. Through the RRC control on the RNC side, the sending end of the RLC entity on the RNC side can use a query based on a certain query interval, or start a query based on each time a certain number of data PDUs are sent When performing a status query, the receiving end of the peer MLC entity on the UE side can be set to trigger the sending of a status PDU based on a response to the status query of the sending end. However, those skilled in the art should understand that the specific manner of triggering the sending end to start the status query and the method of triggering the receiving segment to send the status PDU depends on the specific implementation scheme and does not affect the implementation of the present invention.

由于同一 UE的 DCCH和 DTCH具有相近的目标质量需求，因此在步驟 S83中由一个合并装置将上述的统计结果合并。若在一定的时间间隔 Δ Τ 内，总的通过 FACH 发送的该 UE 的 DCCH/DTCH的数据 PDU的个数为 N, 所统计的 Δ Τ内总的错误接收的数据 PDU的个数为 M, 则可在步骤 S84中根据下式得到当前的块错误率 BLER(k)为： Since the DCCH and DTCH of the same UE have similar target quality requirements, a merging device combines the above-mentioned statistical results in step S83. If within a certain time interval ΔT, the total number of data PDUs of the DCCH / DTCH of the UE sent through the FACH is N, and the total number of erroneously received data PDUs in the ΔT is M, Can be obtained according to the following formula in step S84 To the current block error rate BLER (k) is:

BLER(k)=M/N (1) BLER (k) = M / N (1)

则经过滤波平滑后的 BLER的估计值 BLER _ave(k)为: Then the estimated BLER _ave (k) after filtering and smoothing is:

BLER _ave(k)=a · BLER _ave(k-l)+(l-a) · BLER (k) (2) 其中， a 是平滑滤波器系数，可以按经验或实际测试结果选择最佳值， a的取值范围在 0-1之间。 BLER _ave (k) = a · BLER _ave (kl) + (la) · BLER (k) (2) where a is the smoothing filter coefficient, and the best value can be selected according to experience or actual test results, and the value of a The range is between 0-1.

应当说明，总的发送的数据 PDU应当包括重传的数据 PDU, 而错误接收的数据 PDU 应当包括仍然出现差错的重传的数据 PDUo 此外， Δ Τ应足够长，以保证 BLER的估计达到足够的准确度，但过长会影响目标 SIR的跟踪性能。 It should be noted that the total data PDUs transmitted should include retransmitted data PDUs, and the data PDUs received in error should include retransmitted data PDUs where errors still occur. In addition, ΔT should be long enough to ensure that the BLER estimate reaches sufficient Accuracy, but too long will affect the tracking performance of the target SIR.

在步骤 S85中，将利用上述方法得到的 BLER的测量值，输入到一个 SIR目标值跟踪环路 (典型的 SIR目标值跟踪环路如图 1所示 ) , 即将测量的 BLER值和已知的 BLER目标值进行比较，并将比较结果通过一定的映射函数。应当理解，所述映射函数可以是任何巳知的用于获得目标 SIR值的映射函数，具体采用哪种映射函数对本发明的实施没有影响。然后 ₅ 在步骤 S86中产生用于下行链路公共信道慢速功率控制的 SIR目标值 In step S85, the measured value of the BLER obtained by using the above method is input into an SIR target value tracking loop (a typical SIR target value tracking loop is shown in FIG. 1), and the BLER value to be measured and the known The BLER target value is compared, and the comparison result is passed through a certain mapping function. It should be understood that the mapping function may be any known mapping function for obtaining a target SIR value, and which mapping function is specifically adopted has no effect on the implementation of the present invention. Then ₅ generates a SIR target value for the downlink common channel slow power control in step S86

以下参照图 9对本发明的笫二优选实施方式进行描述如图 9所示，在 RNC中，对于承载在公共传输信道上的逻辑信道 DCCH和 DTCH，在步骤 S91和 S92中，分别统计所述 DCCH 和 DTCH对应的 RLC实体接收的来自 UE的状态 PDU指示的正确和错误接收的数据 PDU数目。在这里，通过 RNC侧 RRC的控制， RNC侧的 RLC实体发送端可以采用基于一定的查询间隔时间进行查询，或基于每次发送一定数目的数据 PDU后启动查询的方式进行状态查询，对等的 UE侧的 RLC实体接收端则可设置为基于对发送端状态查询进行响应的方式触发状态 PDU的发送。本领域技术人员应当理解，具体采用哪种触发发送端启动状态查询的方式以及哪种触发接收端发送状态 PDU的方式，取决于具体的实现方式，并且不影响本发明的实施。 The following describes a second preferred embodiment of the present invention with reference to FIG. 9. As shown in FIG. 9, in the RNC, for the logical channels DCCH and DTCH carried on a common transmission channel, the DCCH is counted in steps S91 and S92 respectively The number of correctly and incorrectly received data PDUs indicated by the status PDUs received by the RLC entity corresponding to the DTCH from the UE. Here, under the control of RRC on the RNC side, the sender of the RLC entity on the RNC side can perform a query based on a certain query interval time or a status query based on the method of starting a query after sending a certain number of data PDUs each time, and the equivalent The receiving end of the RLC entity on the UE side may be configured to trigger the sending of the status PDU based on a response to the status query of the sending end. Those skilled in the art should understand which trigger is specifically used to trigger the startup status check of the sending end. The manner of inquiry and the manner of triggering the receiving end to send the status PDU depend on the specific implementation and do not affect the implementation of the present invention.

然后，在步骤 S93中同一 UE的 DTCH和 DCCH的输出结果均送到 SIR目标值跟踪环路。 SIR目标值跟踪环路可以采用与外环功率控制相同的结构，作为示范性的例子，可以采用文献 "On Setting Reverse Link Target SIR in a CDMA System, Proceedings of VTC，97， May 1997， Vol. 2， pp.929-933, by A. Sampath, P. Kumar and J. Holtzman" 所使用的外环功率控制算法，即 Then, the output results of the DTCH and DCCH of the same UE are sent to the SIR target value tracking loop in step S93. The SIR target value tracking loop can adopt the same structure as the outer loop power control. As an exemplary example, the document "On Setting Reverse Link Target SIR in a CDMA System, Proceedings of VTC, 97, May 1997, Vol. 2 , Pp.929-933, by A. Sampath, P. Kumar and J. Holtzman "The outer loop power control algorithm used, ie

- 1 - 1

+1

δ为环路调整步长, Κ可以由目标 BLER决定: δ is the loop adjustment step size, and κ can be determined by the target BLER:

在外环功率控制中，式（ 3 )中 q_k是由 MAC层传输块的循环冗余校码 ( CRC )导出的指示读传输块是否正确的量，而在本发明中， q_k由同一 UE的逻辑信道 DCCH和 DTCH对应的 RLC 实体对每个状态 P U 进行分析得到的正确和错误接收的数据 H J数目导出即当状态 PDU指示有一个数据 PDU巳经被正确接收时， ¾取为 -1，当状态 PDU指示有一个数据 PDU未被正确接收时， q_k取为 +1，这样，利用与外环功率控制具有相同结构的 SIR跟踪环，即可以得到用于下行链路公共信道慢速功率控制的 SIR 目标值。但是本领域技术人员应当理解，也可以使用其他方式来获得所述 SIR目标值，具体采用何种方式对本发明的实施没有影响。 In the outer loop power control, q _k in formula (3) is an amount indicating whether the read transmission block is correct, which is derived from the cyclic redundancy correction (CRC) of the MAC layer transmission block. In the present invention, q _{k is} determined by the same The RLC entity corresponding to the logical channel DCCH and DTCH of the UE analyzes each state PU and obtains the number of correctly and incorrectly received data HJs. That is, when the state PDU indicates that a data PDU has been received correctly, ¾ is taken as -1. When the status PDU indicates that a data PDU has not been received correctly, q _{k is} taken as +1. In this way, using the SIR tracking ring with the same structure as the outer loop power control, the slow speed of the downlink common channel can be obtained. SIR target value for power control. However, those skilled in the art should understand that other methods may be used to obtain the SIR target value, and which method does not affect the implementation of the present invention.

在步骤 S94，输出 SIR目标值以用于下行链路的慢速功率控制。 In step S94, the SIR target value is output for slow power control in the downlink.

以上结合本发明的优选实施方式描述了获得开环功率控制的目标 SIR值的不同方式。其中，根据本发明的一种实施方式，首先在一定时间段内统计 DCCH和 DTCH对应的 RLC实体接收的来自 UE的状态 PDU指示的错误接收的数据 PDU数目，然后按照本发明的方法计算 BLER值，再通过 SIR目标值跟踪环路获得 SIR目标值。相比之下，根据本发明的另一种实施方式的做法是, 直接将 DCCH和 DTCH对应的 RLC实体接收的来自 UE的状态 PDU指示的正确和错误接收的数据 PDU数目送入 SIR目标值跟踪环路来获得 SIR目标值，因此，这种实施方式不经历计算 BLER 值的过程。 The above describes the method of obtaining open loop power control in conjunction with the preferred embodiment of the present invention. Different ways of target SIR value. Wherein, according to an embodiment of the present invention, the number of data PDUs received by the status PDU indicated by the status PDU received by the RLC entity corresponding to the DCCH and DTCH received by the UE in a certain period of time is first counted, and then the BLER value is calculated according to the method of the present invention , And then obtain the SIR target value through the SIR target value tracking loop. In contrast, the method according to another embodiment of the present invention is to directly send the number of correctly and incorrectly received data PDUs indicated by the status PDUs from the UE received by the RLC entities corresponding to the DCCH and DTCH into the SIR target value tracking. The loop is used to obtain the SIR target value, so this embodiment does not go through the process of calculating the BLER value.

以上结合 WCDMA ***对本发明的优选实施方式进行了说明，但是本领域技术人员应当理解，本发明不仅适用于 WCDMA ***，还适用于任何其他需要进行下行链路公共信道慢速开环功率控制的***，如 IS-95, cdma200及 TD:SCDMA***。 The preferred embodiments of the present invention have been described above in conjunction with a WCDMA system, but those skilled in the art should understand that the present invention is not only applicable to WCDMA systems, but also to any other system that needs to perform slow open-loop power control on the downlink common channel. , Such as IS-95, cdma200 and TD: SCDMA systems.

上述对本发明优选实施例的描述只是为了说明的目，不应理解为对本发明的任何限制。本发明可以采用软件、硬件或二者结合的形式实现。本领域技术人员可以根据上述描述获得有关本发明的任何变形和改进》但这些变形和改进都包括在随附权利要求书中所限定的本发明的范围和精神内。 The above description of the preferred embodiments of the present invention is for the purpose of illustration only and should not be construed as any limitation to the present invention. The invention can be implemented in the form of software, hardware or a combination of both. Those skilled in the art can obtain any modifications and improvements related to the present invention based on the foregoing description, but these modifications and improvements are included in the scope and spirit of the present invention as defined in the appended claims.

Claims

1. 一种下行链路公共信道开环功率控制的 SIR目标值产生方法，该方法包括如下步骤: 1. A method for generating an SIR target value for downlink common channel open-loop power control, the method comprising the following steps:

一个统计步骤，在 RNC 中，统计承载在公共传输信道上的逻辑信道 DCCH和 DTCH二者中至少一个对应的 RLC实体接收的来自 UE的状态 PDU指示的关于 UE側数据 PDU接收正确与否的信息；以及 A statistical step in the RNC is to collect information about whether the UE-side data PDU is received correctly from the UE status PDU indication received by the RLC entity corresponding to at least one of the logical channels DCCH and DTCH carried on the common transmission channel. ; as well as

一个 SIR目标值获得步骤，将所述关于 UE侧数据 PDU接收正确与否的信息送入一个 SIR目标值跟踪环路，以获得用于下行链路开环功率控制的 SIR目标值。 An SIR target value obtaining step sends the information about whether the UE-side data PDU is received correctly to an SIR target value tracking loop to obtain a SIR target value for downlink open loop power control.

2.根据权利要求 1所述的方法，其中所述统计步骤包括如下步骤: 统计所述 DCCH和 DTCH二者中至少一个对应的 RLC实体在一个时间段内接收的来自 UE的状态 PDU指示的 UE错误接收的数据 WHJ的数目；并且 2. The method according to claim 1, wherein the counting step comprises the steps of: counting at least one of the DCCH and DTCH corresponding RLC entities received by the UE from a UE status PDU indication within a time period. 3. The number of erroneously received data WHJ; and

以所述统计得到的 UE错误接收的数据 PDU数目和在所述时间段内在所述 CCH和 TCH二者中至少一个上总发送的数据 PDU 数目作为关于 ϋΕ侧数据 PDU接收正确与否的信息 _Θ The number of data PDUs received incorrectly by the UE and the total number of data PDUs transmitted on at least one of the CCH and TCH during the time period are used as information about whether the data side PDU is received correctly _Θ

3.根据权利要求 2所迷的方法，还包括一个合并步騍，用于将逻辑信道 DCCH和 DTCH各自对应的 RLC实体接收的来自 UE的状态 PDU指示的关于 UE错误接收的数据 PDU的数目合并，并且 3. The method according to claim 2, further comprising a merging step for merging the number of data PDUs received by the UE about the erroneously received data PDUs indicated by the status PDUs from the UE received by the RLC entities corresponding to the logical channels DCCH and DTCH respectively. , And

以所述合并后的错误接收的数据 PDU数目和在所述时间段内在所述 CCH和 DTCH上总发送的数据 PDU数目作为关于 UE侧数据 PDU接收正确与否的信息。 The information about whether the UE-side data PDU is received correctly or not is taken as the number of the data PDUs that are received incorrectly after being combined and the number of data PDUs that are sent on the CCH and DTCH during the time period.

4. 根据权利要求 2或 3所述的方法，其中所述统计步骤根据下式确定下行链路 BLER值： BLER(k)=M/N 4. The method according to claim 2 or 3, wherein the statistical step determines a downlink BLER value according to the following formula: BLER (k) = M / N

其中， M为在所述时间段内该 UE的 DCCH和 /或 DTCH的错误接收的数据 PDU的数目， N为在所述时间段内总发送的该 UE的 DCCH和 /或 DTCH数据 PDU的数目。 Wherein, M is the number of erroneously received data PDUs of the UE's DCCH and / or DTCH during the time period, and N is the number of DCCH and / or DTCH data PDUs of the UE that were transmitted during the time period. .

5.根据权利要求 4所述的方法，还包括根据下式对所述下行链路 BLER值进行滤波平滑的步驟： The method according to claim 4, further comprising the step of filtering and smoothing the downlink BLER value according to the following formula:

BLER _ave(k)=a · BLER _ave(k-l)+(l-a) · BLER (k) ， BLER _ave (k) = a · BLER _ave (kl) + (la) · BLER (k)

其中， a是平滑滤波器系数，其取值范围在 0-1之间。 Among them, a is a smoothing filter coefficient, and its value ranges from 0-1.

6.根据权利要求 1 所述的方法，其中所述统计步骤还包括统计 DCCH和 DTCH二者中至少一个对应的 RLC实体接收的来自 UE 的状态 PDU指示的正确接收和错误接收的数据 PDU数目，以作为关于 UE侧数据 PDU接收正确与否的信息。 The method according to claim 1, wherein the counting step further comprises counting the number of correctly received and incorrectly received data PDUs received by the RLC entity corresponding to at least one of the DCCH and DTCH from the UE's status PDU, It is used as information about whether the UE-side data PDU is received correctly.

7.根据权利要求 6所述的方法，其中所述 sm目标值获得步骤根据下式获得 k+1时刻的 SIR目标值： The method according to claim 6, wherein the sm target value obtaining step obtains the SIR target value at time k + 1 according to the following formula:

- 1 - 1

+1

式中， δ为环路调整步长， Κ可以由目标 BLER决定: Where δ is the loop adjustment step size, and κ can be determined by the target BLER:

q_k由同一 UE的逻辑信道 DCCH和 DTCH二者至少一个对应的 RLC实体对每个状态 PDU进行分析得到的正确和错误接收的数据 PDU数目导出。 q _k is derived from the number of correctly and incorrectly received data PDUs obtained by analyzing at least one corresponding RLC entity of both the logical channel DCCH and DTCH of the same UE.

8.一种下行链路公共信道开环功率控制的 SIR目标值产生***，该***包括如下步骤： 8. A SIR target value generation system for downlink common channel open-loop power control, the system comprising the following steps:

一个统计装置，位于 RNC 中，用于统计承载在公共传输信道上的逻辑信道 DCCH和 DTCH二者中至少一个对应的 RLC实体接收的来自 UE的状态 PDU指示的关于 UE侧数据 PDU接收正确与否的信息; 以及一个 SIR目标值跟踪环路，根据所述关于 UE侧数据 PDU接收正确与否的信息输出用于下行链路开环功率控制的 SIR目标值。 A statistics device is located in the RNC, and is configured to count whether the UE-side data PDU indication received by the status PDU received from the UE received by the corresponding RLC entity corresponding to at least one of the logical channels DCCH and DTCH carried on the common transmission channel is correct or not. Information; and An SIR target value tracking loop outputs a SIR target value for downlink open loop power control according to the information about whether the UE-side data PDU is received correctly.

9. 根据权利要求 8所述的***，其中所述统计装置用于统计逻辑信道 DCCH和 DTCH二者中至少一个对应的 RLC实体在一个时间段内接收的来自 UE的状态 PDU指示的关于 UE错误接收的数据 PDU数目;并且所述统计装置以所述统计得到的 UE错误接收的数据 PDU数目和在所迷时间段内在所述 DCCH和 DTCH二者中至少一个上总发送的数据 PDU数目作为关于 UE侧数据 PDU 接收正确与否的信息，用以输入所述 SIR目标值跟踪环路。 9. The system according to claim 8, wherein the statistics device is configured to count errors related to UEs indicated by status PDUs received from the UE received by the RLC entity corresponding to at least one of the logical channels DCCH and DTCH within a period of time. The number of data PDUs received; and the statistics device taking the number of data PDUs received by the UE in error and the total number of data PDUs transmitted on at least one of the DCCH and DTCH within the lost time period as The UE-side data PDU receives correct information for inputting the SIR target value tracking loop.

10. 根据权利要求 8所述的***，所述统计装置还包括一个合并装置,用于将逻辑信道 DCCH和 DTCH各自对应的 RLC实体接收的来自 UE的状态 PDU指示的关于 UE错误接收的数据 PDU 的数目合并，以所述合并后的错误接收的数据 PDU数目和在所述时间段内在所述 DCCH和 DTCH上总发送的数据 PDU数目作为关于 UE侧数据 PDU接收正确与否的信息，用以输入所述 SIR 目标值跟踪环路。 10. The system according to claim 8, wherein the statistics device further comprises a merging device, configured to receive the data PDUs received by the UE from the UE's status PDU received by the RLC entity corresponding to the logical channels DCCH and DTCH and received from the UE. The number of data PDUs that are received incorrectly after the combination and the number of data PDUs that were sent on the DCCH and DTCH during the time period as information about whether the UE-side data PDU was received correctly or not. Enter the SIR target value tracking loop.

11. 根据权利要求 9或 10所述的*** 其中所述统计装置根据下式确定下行链路 BLER值： 11. The system according to claim 9 or 10, wherein the statistical device determines a downlink BLER value according to the following formula:

BLER(k)=M/N BLER (k) = M / N

其中， M为在所述时间段内该 UE的 DCCH和 /或 DTCH的错误接收的数据 PDU的数目 , N为在所述时间段内总发送的该 UE的 DCCH和 /或 DTCH数据 PDU的数目。 Where M is the number of erroneously received data PDUs of the UE's DCCH and / or DTCH during the time period, and N is the number of DCCH and / or DTCH data PDUs of the UE that were transmitted during the time period. .

12. 根据权利要求 11所述的***，其中所述统计装置还根据下式对所述下行链路 BLER值进行滤波平滑： 12. The system according to claim 11, wherein the statistical device further performs filtering and smoothing on the downlink BLER value according to the following formula:

BLER _ave(k)=a · BLER _ave(k-l)+(l-a) · BLER (k) , BLER _ave (k) = aBLER _ave (kl) + (la) BLER (k),

13. 根据权利要求 8所述的***，其中所述统计装置还用于统计逻辑信道 DCCH和 DTCH二者中至少一个对应的 RLC实体接收的来自 UE的状态 PDU指示的正确接收和错误接收的数据 PDU 数目，作为关于 UE侧数据 PDU接收正确与否的信息，用以输入所述 SIR目标值跟踪环路。 13. The system according to claim 8, wherein the statistics device is further used for statistics The number of correctly received and incorrectly received data PDUs indicated by the status PDU from the UE received by at least one of the logical channels DCCH and DTCH corresponding to the RLC entity is used as information about whether the UE-side data PDU is received correctly or not to input all The SIR target value tracking loop is described.

14.根据权利要求 13所述的***，其中所述 SIR目标值跟踪环路根据下式获得 k+1时刻的 SIR目标值： The system according to claim 13, wherein the SIR target value tracking loop obtains the SIR target value at time k + 1 according to the following formula:

- 1 - 1

+1

δ为环路调整步长， Κ可以由目标 BLER决定: δ is the loop adjustment step size, and κ can be determined by the target BLER:

q_k由同一 UE的逻辑信道 DCCH和 DTCH二者至少一个对应的 q _k is corresponding to at least one of both logical channel DCCH and DTCH of the same UE

RLC实体对每个状态 PDU进行分析得到的正确和错误接收的数据 PDU数目导出。 The RLC entity analyzes each status PDU and derives the number of correct and incorrectly received data PDUs.