WO2013173959A1 - 传输方法及rlc层接收实体 - Google Patents
传输方法及rlc层接收实体 Download PDFInfo
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- WO2013173959A1 WO2013173959A1 PCT/CN2012/075818 CN2012075818W WO2013173959A1 WO 2013173959 A1 WO2013173959 A1 WO 2013173959A1 CN 2012075818 W CN2012075818 W CN 2012075818W WO 2013173959 A1 WO2013173959 A1 WO 2013173959A1
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- rlc layer
- receiving entity
- timer
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- layer receiving
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- 238000012545 processing Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 abstract description 13
- 230000007246 mechanism Effects 0.000 abstract description 9
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1848—Time-out mechanisms
Definitions
- an automatic repeat request (Automatic Repeat-reQuest) can be adopted at the Radio Link Control (RLC) layer.
- ARQ Radio Link Control
- the present invention provides a transmission method and an RLC layer receiving entity for reducing retransmission delay, thereby improving transmission performance of a communication system.
- a transmission method including:
- the RLC layer receiving entity receives the data packet
- the RLC layer receiving entity constructs a status report of the RLC layer, and sends a status report of the RLC layer; wherein, the interval between the time when the RLC layer receives the status report of the entity is not Limited by the T_StatusProhibit timer.
- RLC layer receiving entity including:
- a receiving unit configured to receive a data packet
- a processing unit configured to detect whether the data packet is out of order, and when detecting that the data packet is out of order, start a T_Reordering timer;
- a sending unit configured to: when the T_Reordering timer expires, construct a status report of the RLC layer, and send a status report of the RLC layer; where the sending unit sends the RLC
- the interval between the time when the status of the layer is reported and the time when the transmitting unit sends the status report of the other RLC layer is not limited by the T_StatusProhibit timer.
- the RLC layer receiving entity constructs a status report of the RLC layer, and sends a status report of the RLC layer, where the RLC layer receiving entity sends the RLC.
- the interval between the time reported by the layer and the time when the RLC layer receiving entity sends the status report of the other RLC layer is not limited by the T_StatusProhibit timer, so that the retransmission delay of the RLC layer receiving entity is equal to the duration of the T_Reordering timer. , which is much smaller than the retransmission delay of the existing ARQ mechanism, so that the retransmission delay is reduced, thereby improving the transmission performance of the communication system.
- FIG. 1 is a schematic flowchart of a transmission method according to an embodiment of the present invention
- FIG. 2 is a schematic flowchart of a transmission method according to another embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of an RLC layer receiving entity according to another embodiment of the present invention.
- 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.
- the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
- GSM Global System for Mobile Communications
- GPRS General Packet Radio Service
- CDMA code division multiple access
- CDMA2000 CDMA2000
- WCDMA Wideband Code Division Multiple Access
- LTE Long Term Evolution
- WiMAX World Interoperability for Microwave Access
- Each entity of each RLC layer can be configured by a Radio Resource Control (RRC) layer and operates in three data transmission modes: Transparent Mode (TM) and Unacknowledged Mode (Unacknowledged Mode). UM) and Acknowledged Mode (AM).
- RRC Radio Resource Control
- TM Transparent Mode
- UM Unacknowledged Mode
- AM Acknowledged Mode
- the ARQ mechanism in the AM sends a Status Report through the RLC layer receiving entity, so that the peer entity determines which packets are acknowledged and received, and which packets need to be retransmitted according to the status report, thereby ensuring data transmission. reliability.
- the triggering process for the status report in the AM mode is affected by two timers, one is a reordering (T_Reordering) timer, and the other is a status reporting inhibit (T_StatusProhibit) timer.
- T_Reordering reordering
- T_StatusProhibit status reporting inhibit
- the data receiving window ie, the variable VR (MS), which is used to identify the cutoff position of the constructed status report, that is, the sequence number (SN) of the PDU
- constructs a status report according to the updated data receiving window but cannot immediately send.
- the RLC layer receiving entity needs to wait for the T_StatusProhibit timer to time out before sending the constructed status report.
- the retransmission delay of the RLC layer receiving entity may be equal to the sum of the duration of the T_Reordering timer and the duration of the T_StatusProhibit timer, and the retransmission delay is large, so that the transmission performance of the communication system is degraded.
- the duration of the T_Reordering timer and the duration of the T_StatusProhibit timer can be set freely by various vendors. The effect is different depending on the configuration of each vendor.
- FIG. 1 is a schematic flowchart of a transmission method according to an embodiment of the present invention. As shown in FIG. 1, the transmission method in this embodiment may include:
- the RLC layer receiving entity receives the data packet.
- the RLC layer receiving entity constructs a status report of the RLC layer, and sending a status report of the RLC layer; wherein, the time when the RLC layer receiving entity sends the status report of the RLC layer and the time when the RLC layer receiving entity sends status reports of other RLC layers
- the interval between them is not limited by the T_StatusProhibit timer.
- the RLC layer receiving entity constructs a status report of the RLC layer, and sends a status report of the RLC layer, where the RLC layer receiving entity sends the status report of the RLC layer.
- the interval between the time and the time when the RLC layer receiving entity sends the status report of the other RLC layer is not limited by the T_StatusProhibit timer, so that the retransmission delay of the RLC layer receiving entity is equal to the duration of the T_Reordering timer, which is much smaller than the current time.
- the retransmission delay of some ARQ mechanisms reduces the retransmission delay, thereby improving the transmission performance of the communication system.
- the duration of the T_StatusProhibit timer is greater than zero. It should be noted that in the case where the duration of the T_StatusProhibit timer is greater than 0, the AM mode of the RLC layer is valid.
- the RLC layer receiving entity may further perform the following steps:
- the RLC layer receiving entity restarts the T_StatusProhibit timer.
- the above-mentioned D_313 5 1"01 ⁇ 1 ⁇ timer is restarted, that is, it is not allowed to be used during the operation of the D_313 5 1"01 ⁇ 1 ⁇ timer.
- the status report of the RLC layer is sent until the T StatusProhibit timer expires before the status report of the RLC layer is sent. It should be noted that the RLC layer receiving entity restarts the T-StatusProhibit timer. Processed in the same way as the technology, that is, the implementation of the embodiment is related to the prior art
- the restart process of the T_StatusProhibit timer can be combined to reduce the frequency of the RLC layer receiving the status report of the RLC layer, so that the air interface resources are saved, and details are not described herein.
- FIG. 3 is a schematic structural diagram of an RLC layer receiving entity according to another embodiment of the present invention.
- the RLC layer receiving entity in this embodiment may include a receiving unit 31, a processing unit 32, and a sending unit 33.
- the receiving unit 31 is configured to receive a data packet;
- the processing unit 32 is configured to detect whether the data packet is out of order, and when detecting that the data packet is out of order, start a T_Reordering timer;
- the sending unit 33 is configured to When the T_Reordering timer expires, the status of the RLC layer is constructed, and the status of the RLC layer is sent, wherein the interval between the sending units 33 is not limited by the T_StatusProhibit timer.
- the RLC layer receiving entity provided in this embodiment may further include the T_Reordering timer and the T_Review timer.
- the processing unit starts the T_Reordering timer.
- the sending unit 33 constructs a status report of the RLC layer, and immediately transmits a status report of the RLC layer, where
- the limitation of the timer is such that the retransmission delay of the RLC layer receiving entity is equal to the duration of the T_Reordering timer, which is much smaller than the retransmission delay of the existing ARQ mechanism, so that the retransmission delay is reduced, thereby improving the transmission of the communication system. performance.
- the processing unit 32 may also restart the T_StatusPmhibit timer, that is, the sending is not allowed during the running of the T_StatusProhibit timer.
- the unit 33 then sends the status of the RLC layer, until the T_StatusProhibit timer expires before the status 4 of the RLC layer is retransmitted.
- the processing unit 32 restarts the T_StatusProhibit timer in the same manner as the prior art, that is, the implementation of the embodiment can be combined with the restart process of the T_StatusProhibit timer in the prior art, thereby reducing the subsequent RLC.
- the layer receives the frequency of the status of the RLC layer, so that the air interface resources are saved, and details are not described herein.
- the disclosed systems, devices, and methods may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
- the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
- the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
- the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) Some of the steps of the method described in various embodiments of the present invention are performed.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .
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Abstract
本发明实施例提供一种传输方法及RLC层接收实体。本发明实施例当T_Reordering定时器超时时,RLC层接收实体通过构造RLC层的状态报告,并发送上述RLC层的状态报告,其中,所述RLC层接收实体发送所述RLC层的状态报告的时间与所述RLC层接收实体发送其他RLC层的状态报告的时间之间的间隔不受T_StatusProhibit定时器的限制,使得RLC层接收实体的重传时延等于T_Reordering定时器的时长,远远小于现有的ARQ机制的重传时延,使得重传时延减小,从而提高了通信***传输性能。
Description
传输方法及 RLC层接收实体
技术领域
本发明涉及通信技术, 尤其涉及一种传输方法及无线链路控制 (Radio Link Control, RLC )层接收实体。 背景技术
在通信***例如: 长期演进( Long Term Evolution , LTE ) ***中, 为 了保证数据传输的可靠性, 在无线链路控制 (Radio Link Control, RLC )层 可以采用自动重传请求( Automatic Repeat-reQuest, ARQ )机制。
然而, 在空口信号质量较差的场景下, 现有 ARQ机制的重传时延较大。 发明内容
本发明提供一种传输方法及 RLC层接收实体, 用以减少重传时延, 从而 提高通信***传输性能。
一方面提供了一种传输方法, 包括:
RLC层接收实体接收数据包;
当所述 RLC 层接收实体检测到所述数据包发生乱序时, 启动 T_Reordering定时器;
当所述 T_Reordering定时器超时时,所述 RLC层接收实体构造 RLC层 的状态报告, 并发送所述 RLC层的状态报告; 其中, 所述 RLC层接收实体 的状态报告的时间之间的间隔不受 T_StatusProhibit定时器的限制。
另一方面提供了一种 RLC层接收实体, 包括:
接收单元, 用于接收数据包;
处理单元, 用于检测所述数据包是否发生乱序, 当检测到所述数据包发 生乱序时, 启动 T_Reordering定时器; 及
发送单元, 用于当所述 T_Reordering定时器超时时, 构造 RLC层的状 态报告, 并发送所述 RLC层的状态报告; 其中, 所述发送单元发送所述 RLC
层的状态报告的时间与所述发送单元发送其他 RLC层的状态报告的时间之 间的间隔不受 T_StatusProhibit定时器的限制。
由上述技术方案可知, 本发明实施例当 T_Reordering 定时器超时时, RLC层接收实体通过构造 RLC层的状态报告, 并发送上述 RLC层的状态报 告, 其中, 所述 RLC层接收实体发送所述 RLC层的状态报告的时间与所述 RLC 层接收实体发送其他 RLC 层的状态报告的时间之间的间隔不受 T_StatusProhibit 定时器的限制, 使得 RLC 层接收实体的重传时延等于 T_Reordering定时器的时长, 远远小于现有的 ARQ机制的重传时延, 使得 重传时延减小, 从而提高了通信***传输性能。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作一简单地介绍, 显而易见地, 下 面描述中的附图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。
图 1为本发明一实施例提供的传输方法的流程示意图;
图 2为本发明另一实施例提供的传输方法的流程示意图;
图 3为本发明另一实施例提供的 RLC层接收实体的结构示意图。 具体实施方式 为使本发明实施例的目的、 技术方案和优点更加清楚, 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 本发明中的实施例, 本领域普通技术人员在没有作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。
本发明的技术方案, 可以应用于各种通信***, 例如: 全球移动通信 *** ( Global System for Mobile Communications, GSM ) 、 通用分组无 线业务 ( General Packet Radio Service, GPRS )***、 码分多址 ( Code Division Multiple Access, CDMA ) ***、 CDMA2000***、 宽带码分多
址( Wideband Code Division Multiple Access, WCDMA ) ***、 长期演 进( Long Term Evolution , LTE ) ***或全球微波接入互操作性 ( World Interoperability for Microwave Access, WiMAX ) ***等。
每个 RLC层各个实体可以由无线资源控制 ( Radio Resource Control, RRC ) 层配置, 并以三种数据传送模式进行工作, 分别为: 透明模式 ( Transparent Mode, TM ) 、 非确认模式( Unacknowledged Mode, UM ) 和确认模式( Acknowledged Mode, AM )。 AM中的 ARQ机制 ,是通过 RLC 层接收实体发送状态报告 ( Status Report ) , 以使得对端实体根据状态报告, 确定哪些数据包被确认收到, 哪些数据包需要重传, 从而保证数据传输的可 靠性。
现有的 ARQ机制中,对 AM模式下的状态报告的触发过程受两个定时器 的影响, 一个是重排序 ( T_Reordering ) 定时器, 另一个是状态报告禁止 ( T_StatusProhibit )定时器。 RLC层接收实体若侦测到数据包即协议数据单 元( Protocol Data Unit, PDU ) 不是按照顺序到达即发生乱序, 则会立即启 动 T_Reordering定时器, 当 T_Reordering定时器超时时, RLC层接收实体 更新数据接收窗口 (即变量 VR(MS), 用于标识所构造的状态报告的截止位 置, 即 PDU的序列号(Sequence Number, SN ) ) , 并根据更新的数据接 收窗口构造状态报告, 但是不能立即发送。 RLC 层接收实体需要等 T_StatusProhibit定时器超时时, 才能发送构造的状态报告。 这样, RLC层 接收实体的重传时延最大可以等于 T_Reordering 定时器的时长与 T_StatusProhibit定时器的时长之和,上述重传时延较大,使得通信***传输 性能下降。 T_Reordering定时器的时长与 T_StatusProhibit定时器的时长可 以由各个厂商自由设置, 由于各个厂商的配置不同, 因此, 产生的效果也就 不同。
图 1为本发明一实施例提供的传输方法的流程示意图, 如图 1所示, 本 实施例的传输方法可以包括:
101、 RLC层接收实体接收数据包;
102、 当所述 RLC 层接收实体检测到所述数据包发生乱序时, 启动 T_Reordering定时器;
103、 当所述 T_Reordering定时器超时时, 所述 RLC层接收实体构造
RLC层的状态报告, 并发送所述 RLC层的状态报告; 其中, 所述 RLC层接 收实体发送所述 RLC层的状态报告的时间与所述 RLC层接收实体发送其他 RLC层的状态报告的时间之间的间隔不受 T_StatusProhibit定时器的限制。
可选地,在本实施例的一个可选实施例中, 当 T_Reordering定时器超时 时, RLC层接收实体更新数据接收窗口 (即变量 VR(MS) ) , 并根据更新的 数据接收窗口构造状态报告, 并立即发送构造的状态报告, 而无需再受 T_StatusProhibit定时器的限制。 这样, RLC层接收实体的重传时延则等于 T_Reordering定时器的时长, 远远小于现有的 ARQ机制的重传时延, 最大 节省了 T_StatusProhibit定时器的时长, 能够有效提高通信***传输性能。
本实施例中, 当 T_Reordering定时器超时时, RLC层接收实体通过构 造 RLC层的状态报告, 并发送上述 RLC层的状态报告, 其中, 所述 RLC层 接收实体发送所述 RLC层的状态报告的时间与所述 RLC层接收实体发送其 他 RLC层的状态报告的时间之间的间隔不受 T_StatusProhibit定时器的限 制, 使得 RLC层接收实体的重传时延等于 T_Reordering定时器的时长, 远 远小于现有的 ARQ机制的重传时延,使得重传时延减小,从而提高了通信系 统传输性能。
在本发明另一实施例中,所述 T_StatusProhibit定时器的时长大于 0。需 要指出的是, 在这种所述 T_StatusProhibit定时器的时长大于 0的情况下, RLC层的 AM模式是生效的。
可以理解的, 按照本实施例提供的方法, RLC层的 AM模式生效的情况 下, 无论 T_StatusProhibit 定时器的时长是多少, RLC 层接收实体都在 T_Reordering定时器超时时, 立即发送状态报告, 从而保证减少重传时延, 提高通信***传输性能。
可选地, 在本发明另一实施例中, 如图 2所示, 在 103之后, RLC层接 收实体还可以执行如下步骤:
201、 RLC层接收实体重启 T_StatusProhibit定时器。
即在发送上述 RLC层的状态 ^艮告之后, 重启上述丁_313 5 1"01^1^定时 器, 也就是说, 在丁_313 5 1"01^1^定时器运行期间不允许再发送 RLC层的 状态报告,直到 T StatusProhibit定时器超时才能再发送 RLC层的状态报告。 需要说明的是, RLC层接收实体重启 T— StatusProhibit定时器可以采用与现
有技术相同的方式处理, 也即本实施例的实施与现有技术中关于
T_StatusProhibit定时器的重启过程可以相结合, 从而降低后续 RLC层接收 实体发送 RLC层的状态报告的频率, 从而节省空口资源, 此处不再赘述。
需要说明的是, 对于前述的各方法实施例, 为了简单描述, 故将其都表 述为一系列的动作组合, 但是本领域技术人员应该知悉, 本发明并不受所描 述的动作顺序的限制, 因为依据本发明, 某些步骤可以采用其他顺序或者同 时进行。 其次, 本领域技术人员也应该知悉, 说明书中所描述的实施例均属 于优选实施例, 所涉及的动作和模块并不一定是本发明所必须的。
在上述实施例中, 对各个实施例的描述都各有侧重, 某个实施例中没有 详述的部分, 可以参见其他实施例的相关描述。
图 3为本发明另一实施例提供的 RLC层接收实体的结构示意图, 如图 3 所示, 本实施例的 RLC层接收实体可以包括接收单元 31、 处理单元 32和发 送单元 33。 其中, 接收单元 31用于接收数据包; 处理单元 32用于检测所述 数据包是否发生乱序, 当检测到所述数据包发生乱序时, 启动 T_Reordering 定时器; 及发送单元 33用于当所述 T_Reordering定时器超时时, 构造 RLC 层的状态^艮告, 并发送所述 RLC层的状态^艮告; 其中, 发送单元 33发送所 间之间的间隔不受 T_StatusProhibit定时器的限制。
在本实施例的一个可选实施例中,本实施例提供的所述 RLC层接收实体 还可以进一步包括所述 T_Reordering定时器和所述 T_StatusProhibit定时 本实施例中, 当处理单元启动的 T_Reordering定时器超时时,发送单元 33通过构造 RLC层的状态报告,并立即发送上述 RLC层的状态报告,其中,
时器的限制, 使得 RLC层接收实体的重传时延等于 T_Reordering定时器的 时长, 远远小于现有的 ARQ机制的重传时延,使得重传时延减小, 从而提高 了通信***传输性能。
在本发明另一实施例中,所述 T_StatusProhibit定时器的时长大于 0。需 要指出的是, 在这种所述 T StatusProhibit定时器的时长大于 0的情况下,
RLC层的 AM模式是生效的。
可选地, 在本发明另一实施例中, 在发送单元 33发送所述 RLC层的状 态报告之后, 处理单元 32还可以重启 T_StatusPmhibit定时器, 也就是说, 在 T_StatusProhibit定时器运行期间不允许发送单元 33再发送 RLC层的状 态^艮告, 直到 T_StatusProhibit定时器超时才能再发送 RLC层的状态 4艮告。 需要说明的是,处理单元 32重启 T_StatusProhibit定时器可以采用与现有技 术相同的方式处理,也即本实施例的实施与现有技术中关于 T_StatusProhibit 定时器的重启过程可以相结合, 从而降低后续 RLC层接收实体发送 RLC层 的状态 告的频率, 从而节省空口资源, 此处不再赘述。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 上述描 述的***, 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应 过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的***, 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 ***, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间 的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合 或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外 ,在本发明各个实施例中的各功能单元可以集成在一个处理单元中 , 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单 元中。 上述集成的单元既可以采用硬件的形式实现, 也可以采用硬件加软件 功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元, 可以存储在一个计算机 可读取存储介质中。 上述软件功能单元存储在一个存储介质中, 包括若干指 令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等)
执行本发明各个实施例所述方法的部分步骤。 而前述的存储介质包括: U盘、 移动硬盘、 只读存储器 (Read-Only Memory, ROM ) 、 随机存取存储器 ( Random Access Memory, RAM ) 、 磁碟或者光盘等各种可以存储程序代 码的介质。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对其 限制; 尽管参照前述实施例对本发明进行了详细的说明, 本领域的普通技术 人员应当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或 者对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技 术方案的本质脱离本发明各实施例技术方案的精神和范围。
Claims
1、 一种传输方法, 其特征在于, 包括:
无线链路控制 RLC层接收实体接收数据包;
当所述 RLC 层接收实体检测到所述数据包发生乱序时, 启动 T_Reordering定时器;
当所述 T_Reordering定时器超时时,所述 RLC层接收实体构造 RLC层 的状态报告, 并发送所述 RLC层的状态报告; 其中, 所述 RLC层接收实体 的状态报告的时间之间的间隔不受 T_StatusProhibit定时器的限制。
2、 根据权利要求 1 所述的方法, 其特征在于, 所述 T_StatusProhibit 定时器的时长大于 0。
3、 一种无线链路控制 RLC层接收实体, 其特征在于, 包括:
接收单元, 用于接收数据包;
处理单元, 用于检测所述数据包是否发生乱序, 当检测到所述数据包发 生乱序时, 启动 T_Reordering定时器; 及
发送单元, 用于当所述 T_Reordering定时器超时时, 构造 RLC层的状 态报告, 并发送所述 RLC层的状态报告; 其中, 所述发送单元发送所述 RLC 层的状态报告的时间与所述发送单元发送其他 RLC层的状态报告的时间之 间的间隔不受 T_StatusProhibit定时器的限制。
4、 根据权利要求 3所述的 RLC层接收实体, 其特征在于, 所述 RLC层 接收实体还包括:所述 T_Reordering定时器和所述 T_StatusProhibit定时器。
5、 根据权利要求 3或 4所述的 RLC层接收实体, 其特征在于, 所述 T StatusProhibit定时器的时长大于 0。
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