WO2011100914A2

WO2011100914A2 - Long term evolution base station and method for processing data service thereof

Info

Publication number: WO2011100914A2
Application number: PCT/CN2011/072693
Authority: WO
Inventors: 王崇泉; 周鹏斌
Original assignee: 华为技术有限公司
Priority date: 2011-04-12
Filing date: 2011-04-12
Publication date: 2011-08-25
Also published as: WO2011100914A3; CN102217365B; CN102217365A

Abstract

A Long Term Evolution (LTE) base station equipment and a method for processing data service in the LTE base station equipment are provided in the present invention embodiment. The method for processing the data service in the LTE base station of the present invention embodiment includes that: at least one cache queue is set in the Packet Data Convergence Protocol (PDCP) entity of the LTE base station for caching the downlink data of at least one data service transmitted by one bearer, and each cache queue has respective priority; after said bearer is established, when PDCP entity transmits data to a Radio Link Control (RLC) entity in the LTE base station by request, the PDCP entity transmits the data in each cache queue to the RLC entity according to the priority of at least one cache queue. According to the embodiment of the present invention, the differentiation of the service Quality of Service (QoS) can be realized in the LTE base station.

Description

长期演进基站及其处理数据业务的方法技术领域 Long-term evolution base station and method for processing data service thereof

本发明实施例涉及无线通信领域，尤其涉及长期演进（LTE, Long Term Evolution )基站及其处理数据业务的方法。背景技术 The embodiments of the present invention relate to the field of wireless communications, and in particular, to a Long Term Evolution (LTE) base station and a method for processing the same. Background technique

在 LTE移动通信***中，当用户同时进行诸如网页浏览和比特流（ BT, BitTorrent )下载等多种数据业务时，这些业务通常在某一个承载中进行传输。而下行调度只能针对承载级别进行，无法对承载中包含的业务进行精细化服务质量（QoS, Quality of Service )保障。此时混合业务中的交互类业务比如网页浏览经常被比特流（BT, BitTorrent ) 下载等业务阻塞，严重影响交互类业务的用户体验。另外由于传输控制协议 /网际协议 (TCP/IP, Transmission Control Protocol/Internet Protocol)自身的流控机制，当用户上下行同时传输数据时，如果下行速率受限，最终将导致上行速率也被拉低。 In the LTE mobile communication system, when users simultaneously perform various data services such as web browsing and BitTorrent download, these services are usually transmitted in a certain bearer. The downlink scheduling can only be performed on the bearer level and cannot guarantee the quality of service (QoS) of the services included in the bearer. At this time, interactive services such as web browsing in the hybrid service are often blocked by services such as bitstream (BT, BitTorrent) download, which seriously affects the user experience of the interactive service. In addition, due to the flow control mechanism of the Transmission Control Protocol/Internet Protocol (TCP/IP), when the user transmits data simultaneously on the uplink and downlink, if the downlink rate is limited, the uplink rate will eventually be lowered. .

由于 LTE是一种新兴的技术，目前公开的资料中没有以上问题的解决方案。发明内容 Since LTE is an emerging technology, there is no solution to the above problems in the current publicly available materials. Summary of the invention

本发明实施例提供了 LTE基站及其处理数据业务的方法。通过本发明实施例，能够在 LTE基站中实现业务 QoS差异化。 Embodiments of the present invention provide an LTE base station and a method for processing the same. With the embodiment of the present invention, service QoS differentiation can be implemented in an LTE base station.

本发明实施例提供了一种在 LTE基站中处理数据业务的方法，包括：在所述 LTE 基站的分组数据汇聚协议（PDCP , Packet Data Convergence Protocol ) 实体中设置至少一个緩存队列，以緩存将经由一个承载传输的至少一个数据业务的下行数据，并且每个緩存队列具有各自的优先级；当所述承载建立之后，所述 PDCP 实体应请求向该 LTE基站中的无线链路控制 ( RLC, Radio Link Control ) 实体发送数据时，所述 PDCP实体根据所述至少一个緩存队列的优先级，向所述 RLC实体发送各个緩存队列中的数据。 An embodiment of the present invention provides a method for processing a data service in an LTE base station, including: setting at least one cache queue in a Packet Data Convergence Protocol (PDCP) entity of the LTE base station, so that the cache a downlink data carrying at least one data service for transmission, and each buffer queue has a respective priority; after the bearer is established, the PDCP entity should request to perform radio link control in the LTE base station (RLC, Radio Link Control) When the entity sends data, the PDCP entity sends data in each cache queue to the RLC entity according to the priority of the at least one cache queue.

另一方面，本发明实施例提供了一种 LTE基站设备，包括： PDCP实体，在所述 PDCP实体中设置有至少一个緩存队列，以緩存将经由一个承载传输的至少一个数据业务的下行数据，并且每个緩存队列具有各自的优先级；以及 RLC实体，接收从所述 PDCP实体发送的数据。其中，当所述承载建立之后，所述 PDCP实体应请求向所述 RLC实体发送数据时，所述 PDCP实体根据所述至少一个緩存队列的优先级，向所述 RLC 实体发送各个緩存队列中的数据。 On the other hand, an embodiment of the present invention provides an LTE base station device, including: a PDCP entity, where at least one buffer queue is set in the PDCP entity to buffer downlink data of at least one data service to be transmitted via a bearer. And each cache queue has its own priority; And an RLC entity, receiving data sent from the PDCP entity. When the PDCP entity requests to send data to the RLC entity, the PDCP entity sends the buffer queues to the RLC entity according to the priority of the at least one cache queue. data.

本发明实施例通过在 LTE基站的 PDCP实体中设置多个基于业务的优先级緩存队列、以及考虑緩存队列的优先级从 PDCP实体向 RLC实体下发数据，能够在 LTE基站中实现业务 QoS差异化。附图说明 The embodiment of the present invention can implement service QoS differentiation in an LTE base station by setting a plurality of service-based priority cache queues in the PDCP entity of the LTE base station and transmitting data from the PDCP entity to the RLC entity in consideration of the priority of the cache queue. . DRAWINGS

为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述中所需要使用的附图作筒单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。 In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be described in detail below. It is obvious that the drawings in the following description are only some embodiments of the present invention. It will be apparent to those skilled in the art that other drawings may be obtained from these drawings without the inventive labor.

图 1是示出根据本发明实施例的在 LTE基站中处理下行业务的方法的流程图； 1 is a flow chart showing a method of processing downlink traffic in an LTE base station according to an embodiment of the present invention;

图 2是示出根据本发明另一实施例的在 LTE基站中处理下行业务的方法的流程图； 2 is a flow chart showing a method of processing downlink traffic in an LTE base station according to another embodiment of the present invention;

图 3是示出根据本发明另一实施例的在 LTE基站中处理下行业务的方法的流程图； 3 is a flow chart showing a method of processing downlink traffic in an LTE base station according to another embodiment of the present invention;

图 4是示出根据本发明另一实施例的在 LTE基站中处理下行业务的方法的流程图； 4 is a flow chart showing a method of processing downlink traffic in an LTE base station according to another embodiment of the present invention;

图 5是示出根据本发明实施例的 LTE基站的示意框图。具体实施方式 FIG. 5 is a schematic block diagram showing an LTE base station according to an embodiment of the present invention. detailed description

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

在根据本发明实施例的 LTE基站中，在 LTE基站的 PDCP实体设置至少一个优先级緩存队列，以用于緩存经一个承载传输的至少一个业务的下行数据。当 PDCP实体应请求向 RLC实体发送数据时， PDCP实体根据緩存队列的优先级，从各个緩存队列中读出数据发送给 RLC 实体。这样，能够在 LTE基站中实现业务 QoS差异化。 In the LTE base station according to the embodiment of the present invention, at least one priority buffer queue is set in the PDCP entity of the LTE base station, for buffering downlink data of at least one service transmitted by one bearer. When the PDCP entity requests to send data to the RLC entity, the PDCP entity is based on the cache team. The priority of the column, read data from each cache queue and sent to the RLC entity. In this way, service QoS differentiation can be implemented in the LTE base station.

在承载初始建立时， PDCP实体可以直接下发数据，而无需应请求。这样，能够防止 RLC緩存数据排空导致吞吐率降低。 When the bearer is initially established, the PDCP entity can directly send data without requesting it. In this way, it is possible to prevent the RLC cache data from being drained and the throughput to be reduced.

在承载建立之后， PDCP 实体可以应请求向 RLC 实体下发数据，并且 After the bearer is established, the PDCP entity can send data to the RLC entity upon request, and

PDCP实体可下发的数据量可以在请求中指定。可下发数据量可以根据空口质量、用户设备（UE, User Equipment ) 能力以及当前承载速率和 RLC緩存队列长度来确定，确定可下发数据量及请求下发数据的动作可由 MAC层的调度动作或者 RLC组包动作来触发，或者也可以周期性地触发。 The amount of data that can be delivered by the PDCP entity can be specified in the request. The amount of data that can be sent can be determined according to the quality of the air interface, the user equipment (UE, User Equipment), and the current bearer rate and the length of the RLC cache queue. The action of determining the amount of data that can be sent and requesting the delivery of data can be scheduled by the MAC layer. Or the RLC group packet action is triggered, or it can be triggered periodically.

图 1 示出了根据本发明实施例的在 LTE基站中处理下行数据业务的方法。 FIG. 1 illustrates a method of processing downlink data traffic in an LTE base station according to an embodiment of the present invention.

LTE基站中包括 PDCP实体（也可称为 PDCP模块 )和 RLC实体（也可称为 RLC模块）。如图 1所示，在步骤 S110, 在 PDCP实体中设置至少一个緩存队列，以緩存将经由一个承载传输的至少一个业务的下行数据。可以为每个緩存队列设置相应的优先级。緩存队列的优先级可以与其中緩存的业务相关。例如，当在某个承载中传输的业务包括超文本传输协议（ HTTP , Hypertext Transfer Protocol )业务、电子邮件（MAIL ) 业务、 BT下载业务和 TELNET业务时，可以在 PDCP实体中设置 4个緩存队列，分别用于緩存 HTTP业务、电子邮件业务、 BT下载业务和 TELNET业务，并且可以将 HTTP 业务緩存队列、电子邮件业务緩存队列、 BT下载业务緩存队列和 TELNET 业务緩存队列的优先级分别设置成 4、 3、 2、 1 , 其中 4为最高优先级， 1为最低优先级。当然，此处提到的緩存队列个数、緩存的业务内容以及优先级均是示例性的，本发明实施例不局限于此。此外，在具体实现时，可以为每个业务设置一个緩存队列，也可以将多个业务（例如， QoS需求相似的多个业务）在一个緩存队列中緩存，均不会脱离本发明实施例的范围。 The LTE base station includes a PDCP entity (also referred to as a PDCP module) and an RLC entity (also referred to as an RLC module). As shown in FIG. 1, at step S110, at least one buffer queue is set in the PDCP entity to buffer downlink data of at least one service to be transmitted via one bearer. You can set the appropriate priority for each cache queue. The priority of the cache queue can be related to the business in which it is cached. For example, when the services transmitted in a bearer include Hypertext Transfer Protocol (HTTP), E-mail (MAIL) service, BT download service, and TELNET service, four cache queues can be set in the PDCP entity. , respectively, for caching HTTP service, email service, BT download service, and TELNET service, and can set the priority of the HTTP service cache queue, the email service cache queue, the BT download service cache queue, and the TELNET service cache queue to 4, respectively. , 3, 2, 1 , where 4 is the highest priority and 1 is the lowest priority. Of course, the number of cache queues, the cached service content, and the priority are all exemplary. The embodiment of the present invention is not limited thereto. In addition, in a specific implementation, a cache queue may be set for each service, and multiple services (for example, multiple services with similar QoS requirements) may be cached in one cache queue, without departing from the embodiment of the present invention. range.

在 S120, 当所述承载建立之后， PDCP实体应请求向 RLC实体发送数据时， PDCP实体可以根据至少一个緩存队列的优先级，向 RLC实体发送各个緩存队列中的数据。继续上面的例子，当 PDCP实体应请求向 RLC实体发送数据时，其可以按照根据优先级确定的比例（例如 4:3:2:1 ), 从 HTTP 业务緩存队列、电子邮件业务緩存队列、 BT下载业务緩存队列和 TELNET 业务緩存队列中取出数据发送到 RLC 实体。此处提到的比例的具体数值以及其与优先级之间的关系仅仅是示例性的。在具体实现时，本领域技术人员也可以根据优先级设置其他的比例。 At S120, after the bearer is established, when the PDCP entity requests to send data to the RLC entity, the PDCP entity may send the data in each cache queue to the RLC entity according to the priority of the at least one cache queue. Continuing with the above example, when the PDCP entity should request to send data to the RLC entity, it can follow the priority-determined ratio (for example, 4:3:2:1), from the HTTP service cache queue, the email service cache queue, and the BT. The downloaded service cache queue and the TELNET service cache queue are sent out to the RLC entity. The specific values of the ratios mentioned here are Its relationship to priority is merely exemplary. In a specific implementation, those skilled in the art can also set other ratios according to priorities.

通过本实施例，能够在 LTE基站中实现业务 QoS的差异化；当多个数据业务通过一个承载进行传输时，能够保障各个业务的 QoS; 并且能够改善混合业务中交互类业务的用户体验。 With this embodiment, the service QoS differentiation can be implemented in the LTE base station; when multiple data services are transmitted through one bearer, the QoS of each service can be guaranteed; and the user experience of the interactive service in the hybrid service can be improved.

图 2示出了根据本发明另一实施例的在 LTE基站中处理下行数据业务的方法。 2 illustrates a method of processing downlink data traffic in an LTE base station in accordance with another embodiment of the present invention.

如图 2所示，在 S210, 在 PDCP实体中设置至少一个緩存队列，緩存将经由一个承载传输的至少一个业务的下行数据。每个緩存队列具有各自的优先级或权重。图 2的 S210与图 1的 S110相似，因此不再详细描述。 As shown in FIG. 2, at S210, at least one buffer queue is set in the PDCP entity, and the buffer is to pass downlink data of at least one service transmitted by the bearer. Each cache queue has its own priority or weight. S210 of Fig. 2 is similar to S110 of Fig. 1, and therefore will not be described in detail.

在 S220, LTE基站的 MAC实体（也可称为 MAC模块）中的调度器向 RLC实体请求数据。在请求中可以包含数据量信息，用以指示 RLC实体可发送的数据量。 At S220, a scheduler in a MAC entity (also referred to as a MAC module) of the LTE base station requests data from the RLC entity. Data volume information may be included in the request to indicate the amount of data that the RLC entity can send.

在 S230, RLC实体响应来自 MAC实体调度器的请求将数据组包发送给 MAC实体，同时计算出需要 PDCP实体补充的数据量并将其发送给 PDCP 实体。根据示例实施例， RLC 实体可以根据空口速率、空口质量、 RLC 自身的緩存数据量以及用户允许发送的最大速率来计算需要 PDCP补充的数据量。 At S230, the RLC entity sends the data packet to the MAC entity in response to the request from the MAC entity scheduler, and calculates the amount of data that needs to be supplemented by the PDCP entity and sends it to the PDCP entity. According to an example embodiment, the RLC entity may calculate the amount of data that needs to be supplemented by the PDCP based on the air interface rate, the quality of the air interface, the amount of cached data of the RLC itself, and the maximum rate that the user is allowed to transmit.

在 S240, PDCP实体根据预先设置的业务緩存队列优先级或权重，从各个緩存队列向 RLC实体下发总量等于从 RLC实体接收的需要 PDCP补充的数据量值的数据。继续在描述图 1时所举的例子，当 RLC实体确定需要 PDCP 实体补充 10个数据包时， PDCP 实体可以根据各个緩存队列的优先级，向 RLC实体发送 4个 HTTP业务数据包， 3个电子邮件业务数据包， 2个 BT 下载业务数据包和 1个 TELNET业务数据包。此处提到的从每个緩存队列发送的数据量以及其与优先级之间的关系仅仅是示例性的。在具体实现方式中，也可以根据优先级，以其他比例发送各个緩存队列中的数据。图 2中的 S240与图 1中的 S 120相似。 In S240, the PDCP entity sends, from the buffer queues to the RLC entity, a total amount of data equal to the amount of data required to be supplemented by the PDCP, which is received from the RLC entity, according to the preset service cache queue priority or weight. Continuing with the example described in FIG. 1, when the RLC entity determines that the PDCP entity needs to supplement 10 data packets, the PDCP entity can send 4 HTTP service data packets to the RLC entity according to the priority of each buffer queue, 3 electronic Mail service data packet, 2 BT download service data packets and 1 TELNET service data package. The amount of data sent from each cache queue and its relationship to priority as mentioned here is merely exemplary. In a specific implementation manner, data in each cache queue may also be sent in other proportions according to priority. S240 in Fig. 2 is similar to S120 in Fig. 1.

通过本实施例，能够在 LTE基站中实现业务 QoS的差异化；当多个数据业务通过一个承载传输时，能够保障各个业务的 QoS; 并且能够改善混合业务中交互类业务的用户体验。 With this embodiment, the service QoS differentiation can be implemented in the LTE base station; when multiple data services are transmitted through one bearer, the QoS of each service can be guaranteed; and the user experience of the interactive service in the hybrid service can be improved.

为保证调度时 RLC实体的 RLC緩存器有足够的数据， PDCP实体可以在载初始建立时，直接向 RLC 实体发送数据，而无需应请求或应通知。这样，能够使 RLC 实体一直保持一定的緩存量，防止出现緩存排空造成的无数据可发送，也防止滞留数据量太多导致优先级高的数据包被堵塞。 To ensure that the RLC buffer of the RLC entity has sufficient data during scheduling, the PDCP entity can Data is sent directly to the RLC entity at the time of initial setup without being requested or should be notified. In this way, the RLC entity can maintain a certain amount of buffers at all times, preventing dataless transmission caused by buffer emptying, and preventing too much data from being stranded, resulting in blocked packets with high priority.

图 3示出了根据本发明另一实施例的在 LTE基站中处理下行数据业务的方法。 FIG. 3 illustrates a method of processing downlink data traffic in an LTE base station according to another embodiment of the present invention.

如图 3所示，在 S310, 在 PDCP实体中设置至少一个緩存队列，緩存将经由一个承载传输的至少一个业务的下行数据。每个緩存队列具有各自的优先级或权重。图 3的 S310与图 1的 S110相似，因此不再详细描述。 As shown in FIG. 3, at S310, at least one cache queue is set in the PDCP entity, and the buffer is to pass downlink data of at least one service transmitted by the bearer. Each cache queue has its own priority or weight. S310 of Fig. 3 is similar to S110 of Fig. 1, and therefore will not be described in detail.

在 S320, 在承载初始建立时， PDCP实体直接向 RLC实体发送数据，不需要等待通知或请求。通过在承载初始建立时直接向 RLC发送数据，能够防止 RLC緩存数据排空导致吞吐率降低。 At S320, when the bearer is initially established, the PDCP entity directly sends data to the RLC entity without waiting for a notification or request. By directly transmitting data to the RLC when the bearer is initially established, it is possible to prevent the RLC cache data from being drained and the throughput rate to be lowered.

此时 PDCP实体向 RLC实体发送的数据量，可以根据空口速率动态调整。或者， PDCP实体可以将 MAC实体调度器首次调度前到达的所有数据均直接发送给 RLC实体。或者， PDCP实体可以向 RLC实体发送预定数量的数据。再或者， PDCP实体可以直接向 RLC实体发送数据，直到以下参照图 4的 S430描述的条件 (1)或条件 (2)满足为止。本段中举例说明的各种情况仅仅是示例性的。在实现发明时，本领域技术人员也可以采用其他方式控制 PDCP实体在承载初始建立时向 RLC实体直接发送的数据量，这些方式均在本发明实施例的范围之内。 At this time, the amount of data sent by the PDCP entity to the RLC entity can be dynamically adjusted according to the air interface rate. Alternatively, the PDCP entity may directly send all data arriving before the first scheduling of the MAC entity scheduler to the RLC entity. Alternatively, the PDCP entity may send a predetermined amount of data to the RLC entity. Still alternatively, the PDCP entity may send data directly to the RLC entity until condition (1) or condition (2) described below with reference to S430 of Figure 4 is satisfied. The various situations illustrated in this paragraph are merely exemplary. In the implementation of the invention, a person skilled in the art may also adopt other manners to control the amount of data directly sent by the PDCP entity to the RLC entity when the bearer is initially established, which is within the scope of the embodiments of the present invention.

在 S330, 在 MAC实体调度器进行调度时，通知 PDCP实体向 RLC实体发送指定数据量的数据。例如，此处可以由 MAC实体调度器通知 PDCP 实体。但是本发明不局限于此，也可以通过其他模块通知 PDCP实体向 RLC 实体发送数据。 At S330, when the MAC entity scheduler performs scheduling, the PDCP entity is notified to send data of the specified data amount to the RLC entity. For example, the PDCP entity can be notified by the MAC entity scheduler here. However, the present invention is not limited thereto, and the PDCP entity may be notified by other modules to transmit data to the RLC entity.

所述指定数据量可以采用各种方法来确定。例如，可以根据 RLC緩存器中的数据量来确定该指定数据量。 The specified amount of data can be determined using various methods. For example, the specified amount of data can be determined based on the amount of data in the RLC buffer.

再例如，可以根据公式 1来确定该指定数据量： For another example, the specified amount of data can be determined according to Equation 1:

公式 1 : Formula 1 :

指定数据量 = min{RLC緩存器剩余空间，当前空口质量能支持的速率 xRLC緩存器的目标緩存时延 } Specify the amount of data = min{RLC buffer free space, the current air interface quality can support the rate xRLC buffer target cache delay }

公式 1中， 1^11{ }是最小值函数。 RLC緩存器剩余空间可以通过检查 RLC 緩存器获得。当前空口质量能支持的速率可以通过以***带宽乘以当前 UE 的频谱效率获得。 RLC緩存器的目标緩存时延是可配置参数，是指期望 RLC 緩存器所緩存的数据量能够以当前速率发送的时间长度。举例来说，在配置 RLC緩存器的目标緩存时延时，可以考虑 PDCP实体向 RLC实体发送数据的处理时延，还可以考虑空口速率的波动以避免由于空口速率波动造成 RLC 緩存器排空。当然，这些考虑因素仅仅是示例性的，在实现发明时，本领域技术人员也可以考虑其他因素来设置 RLC緩存器的目标緩存时延，这些改变不会超出本发明实施例的范围。 In Equation 1, 1^11{ } is the minimum function. The remaining space of the RLC buffer can be obtained by checking the RLC buffer. The current air interface quality can support the rate by multiplying the current bandwidth by the system bandwidth. The spectral efficiency is obtained. The target cache delay of the RLC buffer is a configurable parameter, which is the length of time that the amount of data buffered by the RLC buffer is expected to be sent at the current rate. For example, when configuring the target cache of the RLC buffer, the processing delay of the data sent by the PDCP entity to the RLC entity may be considered, and the fluctuation of the air interface rate may also be considered to avoid the RLC buffer being emptied due to the air interface rate fluctuation. Of course, these considerations are merely exemplary. When implementing the invention, those skilled in the art may also consider other factors to set the target cache delay of the RLC buffer, and these changes do not exceed the scope of the embodiments of the present invention.

以上获得 RLC緩存器剩余空间和当前空口质量能支持的速率的方法仅仅是示例性的，本发明实施例不局限于这些方法，本领域技术人员也可以采用其他方法来获得所述参数值。例如， RLC緩存器剩余空间还可以通过公式 2来确定。 The method for obtaining the RLC buffer remaining space and the rate that the current air interface quality can support is only exemplary. The embodiments of the present invention are not limited to these methods, and other methods may be used by those skilled in the art to obtain the parameter values. For example, the remaining space of the RLC buffer can also be determined by Equation 2.

公式 2: Formula 2:

RLC緩存器剩余空间 = RLC緩存器的目标緩存数据量 - RLC緩存器中的数据量 RLC buffer free space = RLC buffer's target cache data amount - The amount of data in the RLC buffer

例如，公式 2中的 RLC緩存器的目标緩存数据量可以是可配置参数。再例如，所述 RLC緩存器的目标緩存数据量也可以通过公式 3来确定。再例如， RLC緩存器中的数据量是指当前 RLC緩存器中緩存（剩余）的数据量，可以通过检查 RLC緩存器获得。 For example, the amount of target cache data for the RLC buffer in Equation 2 can be a configurable parameter. For another example, the amount of target cache data of the RLC buffer can also be determined by Equation 3. For another example, the amount of data in the RLC buffer refers to the amount of data cached (remaining) in the current RLC buffer, which can be obtained by checking the RLC buffer.

公式 3: Formula 3:

RLC緩存器的目标緩存数据量 = RLC实体的吞吐率 X RLC緩存器的目标緩存时延 Target cache data amount of RLC buffer = throughput rate of RLC entity X Target cache delay of RLC buffer

以上描述中提到的 "***带宽"、 "当前 UE的频谱效率" 以及 " RLC实体的吞吐率"等相关技术领域中常用的术语具有与本领域技术人员通常理解一致的含义。 The terms commonly used in the related art fields such as "system bandwidth", "spectral efficiency of the current UE", and "throughput rate of the RLC entity" mentioned in the above description have the meanings generally understood by those skilled in the art.

以上描述的确定指定数据量的方法仅仅是示例性的，本发明实施例不局限于这些方法，本领域技术人员也可以采用其他方法来确定该指定数据量。并且，指定数据量的计算可以在 MAC实体中进行，也可以在 RLC实体、甚至是在 PDCP实体中进行，均不超出本发明实施例的范围。此外，当指定数据量的计算在 MAC实体或 PDCP实体中进行时， MAC实体或 PDCP实体可以通过检查 RLC緩存器来获得 RLC緩存器中的数据量。 The method for determining the specified amount of data described above is merely exemplary. The embodiments of the present invention are not limited to these methods, and those skilled in the art may also adopt other methods to determine the specified amount of data. Moreover, the calculation of the specified data amount may be performed in the MAC entity, or in the RLC entity, or even in the PDCP entity, without departing from the scope of the embodiments of the present invention. In addition, when the calculation of the specified data amount is performed in the MAC entity or the PDCP entity, the MAC entity or the PDCP entity can obtain the amount of data in the RLC buffer by checking the RLC buffer.

在 S340, PDCP实体在接收到通知之后，根据预先配置的各个緩存队列的优先级或权重，下发各个緩存队列中的数据。图 3的 S340与图 2的 S240 相似，因此不再详细描述。 At S340, after receiving the notification, the PDCP entity according to each pre-configured cache queue Priority or weight, the data in each cache queue is delivered. S340 of FIG. 3 is similar to S240 of FIG. 2 and therefore will not be described in detail.

此外，通过在承载初始建立时 PDCP实体直接向 RLC发送数据，能够防止 RLC緩存数据排空导致吞吐率降低。 In addition, by directly transmitting data to the RLC when the bearer is initially established, it is possible to prevent the RLC cache data from being drained and the throughput rate to be lowered.

图 4示出了根据本发明另一实施例的在 LTE基站中处理下行数据业务的方法。 FIG. 4 illustrates a method of processing downlink data traffic in an LTE base station according to another embodiment of the present invention.

为方便描述，定义 PDCP实体的两个状态：初始状态和流控状态。初始状态是指 PDCP实体直接向 RLC实体发送数据、无需等待通知或应请求的状态；流控状态是指 PDCP实体应请求向 RLC实体发送数据的状态。 For convenience of description, define two states of the PDCP entity: initial state and flow control state. The initial state refers to the state in which the PDCP entity sends data directly to the RLC entity without waiting for notification or on request; the flow control state refers to the state in which the PDCP entity should request to send data to the RLC entity.

在本实施例中，当 7 载初始建立时，或者，当 PDCP实体在预设时间段内没有需要发送的数据时，所述 PDCP实体进入初始状态。另外，当 PDCP 实体直接向 RLC实体发送数据的持续时间未超过初始发送时间长度且 RLC 緩存器中的数据量大于预定阈值时，或者，当 PDCP实体直接向 RLC实体发送数据的持续时间超过初始发送时间长度且 RLC緩存器中的数据量大于 RLC緩存器的目标緩存数据量时， PDCP实体进入流控状态。当 PDCP实体处于一个状态时，如果满足上述进入另一个状态的条件，则 PDCP实体进入另一个状态。以下将参照图 4对此进行详细描述。 In this embodiment, when the 7-carrier initial establishment, or when the PDCP entity does not need to transmit data within the preset time period, the PDCP entity enters an initial state. In addition, when the duration that the PDCP entity directly sends data to the RLC entity does not exceed the initial transmission time length and the amount of data in the RLC buffer is greater than a predetermined threshold, or when the PDCP entity directly sends data to the RLC entity for more than the initial transmission time The PDCP entity enters the flow control state when the length of time and the amount of data in the RLC buffer is greater than the amount of target cache data of the RLC buffer. When the PDCP entity is in one state, if the above conditions for entering another state are satisfied, the PDCP entity enters another state. This will be described in detail below with reference to FIG.

如图 4所示，在 S410, 在 PDCP实体中设置至少一个緩存队列，緩存将经由一个承载传输的至少一个数据业务的下行数据。每个緩存队列具有各自的优先级或权重。图 4的 S410与图 1的 S110相似，因此不再详细描述。 As shown in FIG. 4, at S410, at least one buffer queue is set in the PDCP entity, and the buffer is to pass downlink data of at least one data service transmitted by the bearer. Each cache queue has its own priority or weight. S410 of Fig. 4 is similar to S110 of Fig. 1, and therefore will not be described in detail.

在 S420, 在承载初始建立时， PDCP实体直接向 RLC实体发送数据，不需要等待通知或请求。也就是说，在承载初始建立时， PDCP实体处于初始状态。 At S420, when the bearer is initially established, the PDCP entity sends data directly to the RLC entity without waiting for a notification or request. That is, the PDCP entity is in the initial state when the bearer is initially established.

在 S430, 确定是否满足如下条件：条件（1) PDCP实体向 RLC实体发送数据的持续时间未超过初始发送时间长度且 RLC緩存器中的数据量大于预定阈值，或条件 (2) PDCP实体向 RLC实体发送数据的持续时间超过初始发送时间长度且 RLC緩存器中的数据量大于 RLC緩存器的目标緩存数据量。 At S430, it is determined whether the following conditions are met: Condition (1) The duration in which the PDCP entity sends data to the RLC entity does not exceed the initial transmission time length and the amount of data in the RLC buffer is greater than a predetermined threshold, or the condition (2) the PDCP entity to the RLC The duration in which the entity sends data exceeds the initial transmission time length and the amount of data in the RLC buffer is greater than the target cache data amount of the RLC buffer.

所述预定阈值和初始发送时间长度均是可设置的参数。例如，可以将该预定阈值设置为汇聚最大比特率（ AMBR, Aggregate Maximum Bit Rate )与初始发送时间的乘积。注意，这仅仅是示例性的，本发明实施例不局限于此。本领域技术人员可以在实现发明时根据需要设置该预定阈值和初始发送时间长度。 Both the predetermined threshold and the initial transmission time length are configurable parameters. For example, you can The predetermined threshold is set to the product of the Aggregate Maximum Bit Rate (AMBR) and the initial transmission time. Note that this is merely exemplary, and embodiments of the present invention are not limited thereto. Those skilled in the art can set the predetermined threshold and the initial transmission time length as needed when implementing the invention.

如上所述， RLC緩存器的目标緩存数据量可以是可配置参数。或者，所述 RLC緩存器的目标緩存数据量可以通过公式 3来确定。 As mentioned above, the amount of target cache data for the RLC buffer can be a configurable parameter. Alternatively, the amount of target cache data of the RLC buffer can be determined by Equation 3.

当条件（1)或者条件 (2)满足时， PDCP 实体从初始状态转换到应请求向 RLC实体发送数据的流控状态。 When condition (1) or condition (2) is satisfied, the PDCP entity transitions from the initial state to the flow control state at which the data should be requested to be sent to the RLC entity.

具体来说，当条件（1)或者条件 (²)满足时，在 S⁴⁴0, RLC 实体经来自 MAC实体调度器的调度指示的触发，检查 RLC緩存器中緩存的数据量。 Specifically, when condition (1) or condition ( ² ) is satisfied, at S ⁴⁴ 0, the RLC entity checks the amount of data buffered in the RLC buffer by triggering a scheduling indication from the MAC entity scheduler.

在 S450, 当 RLC緩存器中緩存的数据量小于目标緩存数据量时， RLC 实体通知 PDCP实体向 RLC实体发送指定数据量的数据。否则，不通知 PDCP 实体发送数据。 At S450, when the amount of data buffered in the RLC buffer is less than the amount of the target cached data, the RLC entity notifies the PDCP entity to send data of the specified amount of data to the RLC entity. Otherwise, the PDCP entity is not notified to send data.

S450中所述的指定数据量可以通过公式 4来计算。 The specified amount of data described in S450 can be calculated by Equation 4.

公式 4: Formula 4:

指定数据量 = max{RLC緩存器剩余空间，两次检查 RLC緩存器中数据量之间 RLC发送给 MAC的数据量} Specify the amount of data = max{RLC buffer free space, check the amount of data in the RLC buffer and the amount of data sent by the RLC to the MAC}

其中， 11^ {}是最大值函数。公式 4中的 RLC緩存器剩余空间与公式 1 中的相同，因此不再详细描述。 Among them, 11^ {} is the maximum function. The remaining space of the RLC buffer in Equation 4 is the same as in Equation 1, and therefore will not be described in detail.

在 S460, PDCP在接收到通知之后，根据预先配置的各个緩存队列的权重，下发各个緩存队列中的数据。图 4的 S460与图 2的 S240相似，因此不再详细描述。 At S460, after receiving the notification, the PDCP sends the data in each cache queue according to the weights of the pre-configured cache queues. S460 of Fig. 4 is similar to S240 of Fig. 2 and therefore will not be described in detail.

以上在 S440和 S450中描述了 RLC实体经调度指示触发，执行检查 RLC 緩存器中緩存的数据量、计算并请求 PDCP实体发送指定数据量的操作。具体来说，可以在 RLC实体收到该调度指示时、也可以在根据 MAC实体调度器的调度对 RLC緩存器中緩存的数据组包完毕时，触发上述操作。或者，还可以周期性地触发上述操作。此外，当 RLC 实体因超时丟弃緩存的数据时，也可以触发检查 RLC緩存数据量、以及计算并请求 PDCP实体发送指定数据量的操作。此时，可以将丟弃的数据量看作是 RLC实体发送的数据量。 The above describes in S440 and S450 that the RLC entity is triggered by the scheduling indication, performs an operation of checking the amount of data buffered in the RLC buffer, and calculating and requesting the PDCP entity to transmit the specified amount of data. Specifically, the RLC entity may trigger the foregoing operation when the RLC entity receives the scheduling indication or when the data packet buffered in the RLC buffer is completed according to the scheduling of the MAC entity scheduler. Alternatively, the above operation can also be triggered periodically. In addition, when the RLC entity discards the buffered data due to timeout, it may also trigger an operation of checking the amount of RLC buffered data and calculating and requesting the PDCP entity to send the specified amount of data. At this point, the amount of data discarded can be considered as the amount of data sent by the RLC entity.

S440中的检查操作可以由 RLC实体执行。然而，本发明实施例不局限于此，也可以通过其他实体，例如 MAC实体或 PDCP实体，来检查 RLC緩存器中的数据量。 The checking operation in S440 can be performed by the RLC entity. However, embodiments of the present invention are not limited Here, the amount of data in the RLC buffer can also be checked by other entities, such as a MAC entity or a PDCP entity.

在 S450中描述的确定指定数据量的方法仅仅是示例性的，本发明实施例不局限于这些方法，本领域技术人员也可以采用其他方法来确定该指定数据量。并且，指定数据量的计算可以在 MAC实体中进行，也可以在 RLC实体、甚至是在 PDCP实体中进行，均在本发明实施例的范围之内。 The method of determining the specified amount of data described in S450 is merely exemplary, and embodiments of the present invention are not limited to these methods, and those skilled in the art may employ other methods to determine the specified amount of data. Moreover, the calculation of the specified amount of data may be performed in the MAC entity, or in the RLC entity, or even in the PDCP entity, and is within the scope of the embodiments of the present invention.

在 S450中描述了请求 PDCP发送数据的操作由 RLC实体执行。但是本发明不局限于此，也可以通过其他模块，例如 MAC实体，通知 PDCP实体向 RLC实体发送数据。或者，也可以由 PDCP实体本身在经触发检查 RLC 緩存器中的数据量之后，根据检查结果决定是否向 RLC 实体发送指定数据量的数据，这种情况可以理解为 PDCP实体 "通知" 自己发送数据。 The operation of requesting PDCP to transmit data is described in S450 to be performed by the RLC entity. However, the present invention is not limited thereto, and the PDCP entity may be notified to transmit data to the RLC entity through other modules, such as a MAC entity. Alternatively, the PDCP entity may also determine whether to send data of a specified amount of data to the RLC entity according to the result of the check after triggering checking the amount of data in the RLC buffer. This may be understood as the PDCP entity "notifying" itself to send data. .

虽然在图中未示出，但是，如上所述，在 PDCP实体的流控状态下，当出现一段时间内没有数据业务的数据需要传输时，信道环境可能发生了很大变化， PDCP实体可以返回到无需请求、直接向 RLC实体发送数据的初始状态。即，当在流控状态下 PDCP实体接收到新数据包距离上一次收到数据包的时间超过特定时间段时， PDCP实体从流控状态转换到初始状态。这一机制可以称为失效处理机制。 Although not shown in the figure, as described above, in the flow control state of the PDCP entity, when data having no data service needs to be transmitted for a certain period of time, the channel environment may change greatly, and the PDCP entity may return. The initial state of sending data directly to the RLC entity without request. That is, when the PDCP entity receives the new data packet in the flow control state and the time when the data packet was last received for more than a certain period of time, the PDCP entity transitions from the flow control state to the initial state. This mechanism can be called a failure handling mechanism.

通过本实施例，能够在 LTE基站中实现业务 QoS的差异化；当多个数据业务通过一个承载传输时，能够保障各个业务的 QoS保障；并且能够改善混合业务中交互类业务的用户体验。 With this embodiment, the QoS of the service can be differentiated in the LTE base station; when multiple data services are transmitted through one bearer, the QoS guarantee of each service can be guaranteed; and the user experience of the interactive service in the hybrid service can be improved.

以下，对根据本发明实施例的 LTE基站，即演进节点 B ( eNB , eNodeB ) 进行描述。根据本发明实施例的 LTE基站可以包括 PDCP实体和 RLC实体。在 PDCP实体中设置有至少一个緩存队列，以緩存将经由一个承载传输的至少一个数据业务的下行数据，并且每个緩存队列具有各自的优先级。 RLC接收从所述 PDCP实体发送的数据。当承载建立之后， PDCP实体应请求向 RLC 实体发送数据时， PDCP实体根据至少一个緩存队列的优先级，向 RLC实体发送各个緩存队列中的数据。以下参照图 5 描述根据本发明实施例的 LTE 基站。 Hereinafter, an LTE base station, that is, an evolved Node B (eNB, eNodeB) according to an embodiment of the present invention will be described. An LTE base station according to an embodiment of the present invention may include a PDCP entity and an RLC entity. At least one buffer queue is provided in the PDCP entity to buffer downlink data of at least one data service to be transmitted via one bearer, and each cache queue has its own priority. The RLC receives data transmitted from the PDCP entity. When the PDCP entity requests to send data to the RLC entity after the bearer is established, the PDCP entity sends the data in each buffer queue to the RLC entity according to the priority of at least one cache queue. An LTE base station according to an embodiment of the present invention is described below with reference to FIG.

图 5示出了根据本发明实施例的 LTE基站的示意框图。如图 5所示， LTE 基站 500包括 PDCP实体 510和 RLC实体 520。在 PDCP实体 510中设置有至少一个緩存队列，以用于緩存将经由一个承载传输的至少一个数据业务的下行数据，并且每个緩存队列具有自己的优先级或权重。 RLC实体 530接收从 PDCP实体 510发送的数据。当 PDCP实体应请求向 RLC实体发送数据时， PDCP实体根据至少一个緩存队列的优先级，向 RLC实体发送各个緩存队列中的数据。 FIG. 5 shows a schematic block diagram of an LTE base station according to an embodiment of the present invention. As shown in Figure 5, LTE Base station 500 includes a PDCP entity 510 and an RLC entity 520. At least one cache queue is provided in the PDCP entity 510 for buffering downlink data of at least one data service to be transmitted via one bearer, and each cache queue has its own priority or weight. The RLC entity 530 receives data transmitted from the PDCP entity 510. When the PDCP entity requests to send data to the RLC entity, the PDCP entity sends the data in each cache queue to the RLC entity according to the priority of at least one cache queue.

緩存队列的优先级或者权重可以根据緩存的业务进行调整。例如，在图 5的示例中， PDCP实体 510包括 4个緩存队列，分别用于緩存 HTTP业务、电子邮件业务、 BT下载业务和 TELNET业务，且分别具有优先级 4、 3、 2、 1。然而本领域技术人员知道，图 5 中示出的緩存队列个数、緩存的业务内容以及优先级均是示例性的，本发明实施例不局限于此。 The priority or weight of the cache queue can be adjusted according to the cached service. For example, in the example of FIG. 5, the PDCP entity 510 includes four cache queues for buffering HTTP traffic, email traffic, BT download traffic, and TELNET traffic, respectively, and having priority levels 4, 3, 2, and 1, respectively. However, those skilled in the art are aware that the number of cache queues, the cached service content, and the priority shown in FIG. 5 are all exemplary, and the embodiment of the present invention is not limited thereto.

此外，如图 5所示，在 RLC实体中还包含 RLC緩存器 540, 用于緩存从 PDCP实体接收的数据。而且， LTE基站 500中还包含 MAC实体， RLC 实体根据 MAC实体中调度器（未示出）的调度，向 MAC实体发送数据。 In addition, as shown in FIG. 5, an RLC buffer 540 is further included in the RLC entity for buffering data received from the PDCP entity. Moreover, the LTE base station 500 further includes a MAC entity, and the RLC entity transmits data to the MAC entity according to scheduling of a scheduler (not shown) in the MAC entity.

根据本发明实施例的 LTE基站按照图 1-4所示的方法处理数据业务的下行数据，此处不再对其操作进行重复地描述。 The LTE base station according to the embodiment of the present invention processes the downlink data of the data service according to the method shown in FIG. 1-4, and the operation thereof is not repeatedly described herein.

LTE基站的其他已知结构和功能在此不再详述，以免模糊本发明实施例的重点。 Other known structures and functions of the LTE base station are not described in detail herein to avoid obscuring the focus of the embodiments of the present invention.

本发明的实施例通过在 PDCP实体中设置基于业务的优先级緩存队列、以及考虑队列优先级向 RLC实体发送数据，能够在 LTE基站中实现业务 QoS 差异化，从而当多个数据业务通过一个承载传输时，保障各个业务下行数据的传输质量。由于下行数据传输质量得以保证，还能够避免下行速率受限导致的上行速率被拉低，从而改善交互类业务的用户体验。仿真结果显示，当下行数据速率受限时，上行速率可以显著提升，由此能够根据比例保证交互网页浏览等交互类业务的响应速度。 Embodiments of the present invention can implement service QoS differentiation in an LTE base station by setting a service-based priority cache queue in a PDCP entity and transmitting data to the RLC entity in consideration of a queue priority, so that when multiple data services pass through one bearer During transmission, the transmission quality of downlink data of each service is guaranteed. Since the downlink data transmission quality is guaranteed, the uplink rate limited by the downlink rate limitation can be prevented from being pulled down, thereby improving the user experience of the interactive service. The simulation results show that when the downlink data rate is limited, the uplink rate can be significantly improved, thereby ensuring the response speed of interactive services such as interactive web browsing according to the ratio.

此外，通过在承载初始建立时 PDCP实体直接向 RLC发送数据，能够使 RLC保持一定的緩存量，防止出现由于 RLC緩存数据排空导致的吞吐率降低。 In addition, by transmitting data directly to the RLC when the bearer is initially established, the RLC can maintain a certain amount of buffering to prevent a decrease in throughput due to RLC cache data emptying.

以上参照附图对本发明示例实施例进行了描述。本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定来实现所描述的功能，但是这种实现不应认为超出本发明的范围。 The exemplary embodiments of the present invention have been described above with reference to the accompanying drawings. Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software or a combination of both, in order to clearly illustrate the hardware and The interchangeability of the software has been generally described in terms of the composition and steps of the examples in the above description. Whether such functions are performed in hardware or software, depending on the particularity of the technical solution, implements the described functionality, but such implementation should not be considered to be beyond the scope of the present invention.

结合本文中所公开的实施例描述的方法或算法的步骤可以用硬件、处理器执行的软件模块，或者二者的结合来实施。软件模块可以置于随机存储器 The steps of a method or algorithm described in connection with the embodiments disclosed herein may be implemented in hardware, a software module executed by a processor, or a combination of both. Software modules can be placed in random access memory

( RAM ), 内存、只读存储器（ROM )、电可编程 ROM、电可擦除可编程 ROM, 寄存器、硬盘、可移动磁盘、 CD-ROM, 或技术领域内所公知的任意其它形式的存储介质中。 (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage known in the art. In the medium.

附图中示出的方法步骤的顺序仅仅是示例性的，本发明不局限于此。除上下文明确指明执行顺序的之外，也可以以其他顺序执行各个步骤。 The order of the method steps shown in the drawings is merely exemplary, and the present invention is not limited thereto. The steps may be performed in other orders, except where the context clearly indicates the order of execution.

尽管已示出和描述了本发明的一些实施例，但本领域技术人员应理解，在不脱离本发明的原理和精神的情况下，可对这些实施例进行各种修改，这样的修改应落入本发明的范围内。 While some embodiments of the present invention have been shown and described, it will be understood by those skilled in the art It is within the scope of the invention.

Claims

权利要求 Rights request

1、一种在长期演进 LTE基站中处理数据业务的方法，其特征在于，包括： A method for processing a data service in a long term evolution LTE base station, characterized in that it comprises:

在所述 LTE基站的分组数据汇聚协议 PDCP实体中设置至少一个緩存队歹 ij , 以緩存将经由一个承载传输的至少一个数据业务的下行数据，并且每个緩存队列具有各自的优先级； Setting at least one cache queue ij ij in a packet data convergence protocol PDCP entity of the LTE base station to buffer downlink data of at least one data service to be transmitted via one bearer, and each cache queue has a respective priority;

当所述承载建立之后，所述 PDCP实体应请求向该 LTE基站中的无线链路控制 RLC实体发送数据时，所述 PDCP实体根据所述至少一个緩存队列的优先级，向所述 RLC实体发送各个緩存队列中的数据。 When the PDCP entity requests to send data to the radio link control RLC entity in the LTE base station, the PDCP entity sends the data to the RLC entity according to the priority of the at least one cache queue. The data in each cache queue.

2、如权利要求 1所述的方法，其特征在于，当所述承载初始建立时，所述 PDCP实体直接向所述 RLC实体发送数据。 2. The method according to claim 1, wherein the PDCP entity directly sends data to the RLC entity when the bearer is initially established.

3、如权利要求 1所述的方法，其特征在于，所述 PDCP实体应请求向 RLC实体发送数据，包括：所述 PDCP实体应请求向所述 RLC实体发送指定数据量的数据，所述请求由所述 LTE基站中的媒体访问控制 MAC实体的调度器调度触发产生。 The method according to claim 1, wherein the PDCP entity requests to send data to the RLC entity, including: the PDCP entity should request to send data of a specified data amount to the RLC entity, the request A scheduler scheduling trigger generated by a media access control MAC entity in the LTE base station.

4、如权利要求 3所述的方法，其特征在于，所述 RLC实体包括 RLC 緩存器，用以緩存从 PDCP实体接收的数据，并且， The method according to claim 3, wherein the RLC entity includes an RLC buffer for buffering data received from a PDCP entity, and

所述指定数据量为当前空口质量能支持的速率和所述 RLC緩存器的目标緩存时延的乘积与所述 RLC緩存器剩余空间中的较小值。 The specified amount of data is a product of a rate that can be supported by the current air interface quality and a target cache delay of the RLC buffer and a smaller value in the remaining space of the RLC buffer.

5、如权利要求 4所述的方法，其特征在于，所述当前空口质量能支持的速率与***带宽及当前用户设备 UE的频谱效率成正比。 The method according to claim 4, wherein the rate that the current air interface quality can support is proportional to the system bandwidth and the spectrum efficiency of the current user equipment UE.

6、如权利要求 1所述的方法，其特征在于，所述 RLC实体包括 RLC 緩存器，用以緩存从 PDCP实体接收的数据，并且， The method according to claim 1, wherein the RLC entity includes an RLC buffer for buffering data received from a PDCP entity, and

所述 PDCP实体应请求向 RLC实体发送数据，包括：所述 PDCP实体应请求向 RLC 实体发送指定数据量的数据，其中，经调度指示触发，或者经周期性触发，检查所述 RLC緩存器中的数据量，并且当所述数据量小于所述 RLC緩存器的目标緩存数据量时，产生所述请求。 The PDCP entity should request to send data to the RLC entity, including: the PDCP entity should request to send data of a specified amount of data to the RLC entity, where the scheduling indication is triggered, or periodically triggered, and the RLC buffer is checked. The amount of data, and when the amount of data is less than the amount of target cache data of the RLC buffer, the request is generated.

7、如权利要求 6所述的方法，其特征在于，所述指定数据量为两次检查所述 RLC緩存器中数据量之间所述 RLC实体发送给所述 MAC实体的数据量与所述 RLC緩存器剩余空间中的较大值。 The method according to claim 6, wherein the specified amount of data is two times to check the amount of data sent by the RLC entity to the MAC entity between the amount of data in the RLC buffer and the The larger value in the remaining space of the RLC buffer.

8、如权利要求 4或 7所述的方法，其特征在于，所述 RLC緩存器剩余空间为所述 RLC緩存器的目标緩存数据量与所述 RLC緩存器中的数据量的差， The method according to claim 4 or 7, wherein the remaining space of the RLC buffer is the difference between the amount of target cache data of the RLC buffer and the amount of data in the RLC buffer.

所述 RLC緩存器的目标緩存数据量与所述 RLC 实体的吞吐率及所述 RLC緩存器的目标緩存时延成正比。 The target cache data amount of the RLC buffer is proportional to the throughput rate of the RLC entity and the target cache latency of the RLC buffer.

9、如权利要求 6-8 中任一项所述的方法，其特征在于，当所述承载初始建立时，或者，当所述 PDCP实体在预设时间段内没有需要发送的数据时，所述 PDCP实体直接向所述 RLC实体发送数据。 The method according to any one of claims 6 to 8, wherein when the bearer is initially established, or when the PDCP entity does not need to transmit data within a preset time period, The PDCP entity directly sends data to the RLC entity.

10、如权利要求 9所述的方法，其特征在于，当所述 PDCP实体直接向存器中的数据量大于预定阈值时，或者，当所述 PDCP实体直接向所述 RLC 实体发送数据的持续时间超过初始发送时间长度且所述 RLC緩存器中的数据量大于所述 RLC緩存器的目标緩存数据量时，所述 PDCP实体应请求向所述 RLC实体发送数据。 10. The method according to claim 9, wherein when the amount of data directly in the memory of the PDCP entity is greater than a predetermined threshold, or when the PDCP entity directly sends data to the RLC entity When the time exceeds the initial transmission time length and the amount of data in the RLC buffer is greater than the target buffer data amount of the RLC buffer, the PDCP entity shall request to send data to the RLC entity.

11、一种 LTE基站设备，其特征在于，包括： An LTE base station device, comprising:

PDCP实体，在所述 PDCP实体中设置有至少一个緩存队列，以緩存将经由一个承载传输的至少一个数据业务的下行数据，并且每个緩存队列具有各自的优先级；以及 a PDCP entity, wherein at least one buffer queue is disposed in the PDCP entity to buffer downlink data of at least one data service to be transmitted via a bearer, and each cache queue has a respective priority;

RLC实体，接收从所述 PDCP实体发送的数据， An RLC entity, receiving data sent from the PDCP entity,

其中，当所述承载建立之后，所述 PDCP实体应请求向所述 RLC实体发送数据时，所述 PDCP实体根据所述至少一个緩存队列的优先级，向所述 RLC实体发送各个緩存队列中的数据。 When the PDCP entity requests to send data to the RLC entity, the PDCP entity sends the buffer queues to the RLC entity according to the priority of the at least one cache queue. data.

12、如权利要求 11所述的 LTE基站设备，其特征在于，当所述承载初始建立时，所述 PDCP实体直接向所述 RLC实体发送数据。 The LTE base station device according to claim 11, wherein the PDCP entity directly sends data to the RLC entity when the bearer is initially established.

13、如权利要求 11所述的 LTE基站设备，其特征在于，还包括媒体访问控制 MAC实体，所述 MAC实体包括调度器， The LTE base station device according to claim 11, further comprising a media access control MAC entity, where the MAC entity includes a scheduler,

其中，当所述调度器进行调度时，所述调度器请求所述 PDCP实体向所述 RLC实体发送指定数据量的数据。 The scheduler requests the PDCP entity to send data of a specified amount of data to the RLC entity when the scheduler performs scheduling.

14、如权利要求 13所述的 LTE基站设备，其特征在于，所述 RLC实体包括 RLC緩存器，用以緩存从所述 PDCP实体接收的数据，并且， The LTE base station device according to claim 13, wherein the RLC entity includes an RLC buffer for buffering data received from the PDCP entity, and

所述指定数据量为当前空口质量能支持的速率和所述 RLC緩存器的目标緩存时延的乘积与所述 RLC緩存器剩余空间中的较小值。 The specified amount of data is a rate that the current air interface quality can support and a destination of the RLC buffer. The product of the standard buffer delay and the smaller value in the remaining space of the RLC buffer.

15、如权利要求 14所述的 LTE基站设备，其特征在于，所述当前空口质量能支持的速率与***带宽及当前 UE的频谱效率成正比。 The LTE base station device according to claim 14, wherein the rate that the current air interface quality can support is proportional to the system bandwidth and the spectrum efficiency of the current UE.

16、如权利要求 12所述的 LTE基站设备，其特征在于，所述 RLC实体包括 RLC緩存器，用以緩存从所述 PDCP实体接收的数据，并且， The LTE base station device according to claim 12, wherein the RLC entity includes an RLC buffer for buffering data received from the PDCP entity, and

其中，所述 RLC实体经调度指示触发，或者被周期性地触发，检查所述 RLC緩存器中的数据量，并且当所述数据量小于所述 RLC緩存器的目标緩存数据量时，请求所述 PDCP实体向所述 RLC实体发送指定数据量的数据。 The RLC entity is triggered by a scheduling indication, or is periodically triggered to check the amount of data in the RLC buffer, and when the amount of data is smaller than the target cached data amount of the RLC buffer, the requesting station The PDCP entity sends data of a specified amount of data to the RLC entity.

17、如权利要求 16所述的 LTE基站设备，其特征在于，所述指定数据量为两次检查所述 RLC緩存器中数据量之间所述 RLC实体发送给所述 MAC 实体的数据量与所述 RLC緩存器剩余空间中的较大值。 The LTE base station device according to claim 16, wherein the specified data amount is twice the amount of data sent by the RLC entity to the MAC entity between the data amount in the RLC buffer. The larger value in the remaining space of the RLC buffer.

18、如权利要求 14或 17所述的 LTE基站设备，其特征在于，所述 RLC 緩存器剩余空间为所述 RLC緩存器的目标緩存数据量与所述 RLC緩存器中的数据量的差， The LTE base station device according to claim 14 or 17, wherein the RLC buffer remaining space is a difference between a target cache data amount of the RLC buffer and an amount of data in the RLC buffer.

其中，所述 RLC緩存器的目标緩存数据量与所述 RLC实体的吞吐率及所述 RLC緩存器的目标緩存时延成正比。 The target cache data amount of the RLC buffer is proportional to the throughput rate of the RLC entity and the target cache delay of the RLC buffer.

19、如权利要求 16-18中任一项所述的 LTE基站设备，其特征在于，当所述承载初始建立时，或者，当所述 PDCP实体在预设时间段内没有需要发送的数据时，所述 PDCP实体直接向所述 RLC实体发送数据。 The LTE base station device according to any one of claims 16 to 18, wherein when the bearer is initially established, or when the PDCP entity does not need to transmit data within a preset time period, The PDCP entity directly sends data to the RLC entity.

20、如权利要求 19所述的 LTE基站设备，其特征在于，当所述 PDCP 实体直接向所述 RLC实体发送数据的持续时间未超过初始发送时间长度且所述 RLC緩存器中的数据量大于预定阈值时，或者，当所述 PDCP实体直接向所述 RLC实体发送数据的持续时间超过初始发送时间长度且所述 RLC 緩存器中的数据量大于所述 RLC緩存器的目标緩存数据量时，所述 PDCP 实体应请求向所述 RLC实体发送数据。 The LTE base station device according to claim 19, wherein when the PDCP entity directly sends data to the RLC entity for a duration that does not exceed an initial transmission time length and the amount of data in the RLC buffer is greater than When the threshold is predetermined, or when the PDCP entity directly sends data to the RLC entity for a duration exceeding an initial transmission time length and the amount of data in the RLC buffer is greater than the target cache data amount of the RLC buffer, The PDCP entity shall request to send data to the RLC entity.