CN101203048A - Transmission time interval switching method for enhanced dedicated channel - Google Patents
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明涉及通信领域，尤其涉及一种用于增强专用信道的传输时间间隔切换方法。The invention relates to the communication field, in particular to a method for switching transmission time intervals for enhanced dedicated channels.
背景技术Background technique
第三代(3G)无线移动通信处于不断的演进变化之中，不断的引入新的需求来实现低成本和高性能，在第五版(R5，Release 5)和第六版(R6，Release 6)中分别引入了高速下行分组接入(HighSpeed Downlink Access，简称HSDPA)和高速上行分组接入(HighSpeed Uplink Packet Access，简称HSUPA)，其目的主要是提高无线频谱利用率并提高系统的整体性能。The third generation (3G) wireless mobile communication is in constant evolution and changes, constantly introducing new requirements to achieve low cost and high performance, in the fifth edition (R5, Release 5) and sixth edition (R6, Release 6) ) respectively introduced High Speed Downlink Packet Access (HSDPA for short) and High Speed Uplink Packet Access (HSUPA for short), the purpose of which is mainly to improve the utilization rate of wireless spectrum and improve the overall performance of the system.
HSUPA是WCDMA系统对上行传输能力的增强技术，主要引进了三种技术：物理层混合自动重传请求(Hybrid Automatic RepeatRequest，简称HARQ)、基于基站(Node B)的快速调度、2毫秒(ms)传输时间间隔(Transmission Time Interval，简称TTI)(除特殊说明外，本文的TTI均指E-DCH的TTI)的短帧传输。HSUPA系统性能比传统的WCDMA版本在上行业务的传输性能上有明显提高，在系统容量上大约有50％-70％的增加，在端到端分组包的延迟上有20％-55％的减少，在用户分组呼叫流量上有约50％的增加。HSUPA is an enhancement technology for uplink transmission capability of WCDMA system. It mainly introduces three technologies: physical layer Hybrid Automatic Repeat Request (HARQ), fast scheduling based on base station (Node B), 2 milliseconds (ms) Transmission Time Interval (TTI for short) (except for special instructions, TTI in this article refers to the TTI of E-DCH) short frame transmission. Compared with the traditional WCDMA version, the HSUPA system performance has significantly improved the transmission performance of uplink services, about 50%-70% increase in system capacity, and 20%-55% reduction in end-to-end packet delay , there is about a 50% increase in user group call traffic.
使用HSUPA技术的WCDMA系统，包括了无线网络控制器(Radio Network Controller，简称RNC)，Node B和用户设备(UserEquipment，简称UE)。Node B通过适时测量各小区的上行噪声抬升(Rise over Thermal，简称RoT)、UE(除特殊说明外，本文所有的提到的UE都是指配置了HSUPA业务的UE)的上行信道质量，通过增强专用信道(Enhanced Dedicated Channel，简称E-DCH)的上行数据获取UE的调度请求信息，根据小区的RoT情况、UE的上行信道质量、UE的调度请求信息、UE的优先级、Node B调度器采用的调度策略和算法等信息确定分配给每个UE的调度授权，然后发送相应的调度命令给相应的UE；UE根据Node B的调度授权以及RNC配置的非调度授权和UE的缓冲区状态，在RNC预先配置给UE的增强专用信道传输格式组合(E-DCH Transport FormatCombination，简称E-TFC)表中选择合适的传输格式合并向Node B发送上行E-DCH数据。The WCDMA system using HSUPA technology includes a radio network controller (Radio Network Controller, referred to as RNC), Node B and user equipment (UserEquipment, referred to as UE). The Node B timely measures the uplink noise rise (Rise over Thermal, RoT for short) of each cell and the uplink channel quality of the UE (except for special instructions, all the UEs mentioned in this article refer to the UE configured with the HSUPA service), through The uplink data of the Enhanced Dedicated Channel (E-DCH) obtains the scheduling request information of the UE, according to the RoT situation of the cell, the uplink channel quality of the UE, the scheduling request information of the UE, the priority of the UE, and the Node B scheduler The information such as the scheduling policy and algorithm adopted determines the scheduling authorization assigned to each UE, and then sends the corresponding scheduling command to the corresponding UE; UE according to the scheduling authorization of Node B and the non-scheduling authorization configured by RNC and the buffer state of UE, Select an appropriate transport format in the enhanced dedicated channel transport format combination (E-DCH Transport Format Combination, referred to as E-TFC) table pre-configured by the RNC to the UE and send uplink E-DCH data to the Node B.
Node B在收到UE发送的上行E-DCH数据之后，根据译码结果，在特定的时间给UE回ACK或者NACK信息。After receiving the uplink E-DCH data sent by the UE, the Node B returns ACK or NACK information to the UE at a specific time according to the decoding result.
在发生TTI切换时，如果从10ms TTI切换到2ms TTI，则在切换时刻前后的两个HARQ进程(HARQ Process)对应的E-DCHHARQ指示信道(E-DCH Hybrid ARQ Indicator Channel，简称E-HICH)的时间发生重合(如图1所示)，协议并未规定这种情况如何处理，导致Node B和UE不能保证做到一致，引发在切换时的数据传输异常。When TTI switching occurs, if switching from 10ms TTI to 2ms TTI, the E-DCHHARQ Indicator Channel (E-DCH Hybrid ARQ Indicator Channel, referred to as E-HICH) corresponding to the two HARQ processes (HARQ Process) before and after the switching time The times overlap (as shown in Figure 1), and the protocol does not stipulate how to deal with this situation, resulting in the Node B and UE not being able to guarantee consistency, resulting in abnormal data transmission during handover.
发明内容Contents of the invention
鉴于以上所述的一个或多个问题，本发明提出了一种用于增强专用信道的传输时间间隔切换方法，通过明确规定在TTI切换时E-HICH的处理方法，做到Node B和UE的一致处理。In view of one or more problems described above, the present invention proposes a transmission time interval switching method for enhanced dedicated channels, by clearly specifying the processing method of E-HICH during TTI switching, so as to achieve the goal of Node B and UE Consistent processing.
根据本发明的实施例的用于增强专用信道的传输时间间隔切换方法包括以下步骤：步骤S202，无线网络控制器建立与节点B之间的支持增强专用信道的无线链路，节点B按照无线网络控制器的配置进行正常的增强专用信道通信；步骤S204，无线网络控制器向节点B发送无线链路重配置命令以重新配置增强专用信道的信息，并切换增强专用信道的当前传输时间间隔；步骤S206，节点B根据无线链路重配置命令进行重配置处理，发送重配置后的增强专用信道的信息。According to the embodiment of the present invention, the transmission time interval switching method for the enhanced dedicated channel includes the following steps: Step S202, the radio network controller establishes a wireless link supporting the enhanced dedicated channel with the Node B, and the Node B follows the wireless network The configuration of the controller carries out normal enhanced dedicated channel communication; step S204, the radio network controller sends a radio link reconfiguration command to the node B to reconfigure the information of the enhanced dedicated channel, and switch the current transmission time interval of the enhanced dedicated channel; step S206, Node B performs reconfiguration processing according to the radio link reconfiguration command, and sends information of the reconfigured enhanced dedicated channel.
其中，无线链路重配置命令包括生效时间，在步骤S206中，在生效时间到达时，节点B发送重配置后的增强专用信道的信息。在生效时间到达时节点B仍在发送重配置前的增强专用信道的信息的情况下，停止发送重配置前的增强专用信道的信息而仅发送重配置后的增强专用信道的信息。Wherein, the radio link reconfiguration command includes an effective time, and in step S206, when the effective time arrives, the Node B sends the reconfigured enhanced dedicated channel information. When the effective time arrives, when the Node B is still sending the information of the enhanced dedicated channel before the reconfiguration, it stops sending the information of the enhanced dedicated channel before the reconfiguration and only sends the information of the enhanced dedicated channel after the reconfiguration.
其中，传输时间间隔切换方法用于将10ms的传输时间间隔切换为2ms。Wherein, the transmission time interval switching method is used to switch the transmission time interval of 10 ms to 2 ms.
通过本发明，解决了TTI从10ms切换到2ms时E-HICH的不确定性，并降低了在TTI从10ms切换到2ms时的重传率。The invention solves the uncertainty of E-HICH when the TTI is switched from 10ms to 2ms, and reduces the retransmission rate when the TTI is switched from 10ms to 2ms.
附图说明Description of drawings
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:
图1是现有技术的从10ms TTI切换到2ms TTI的信道关系图；Fig. 1 is a channel relationship diagram of switching from 10ms TTI to 2ms TTI in the prior art;
图2是根据本发明的实施例的传输时间间隔切换方法的流程图；FIG. 2 is a flow chart of a transmission time interval switching method according to an embodiment of the present invention;
图3是根据本发明的另一个实施例的传输时间间隔切换方法的流程图；以及FIG. 3 is a flowchart of a transmission time interval switching method according to another embodiment of the present invention; and
图4是修改后的方案中从10ms TTI切换到2ms TTI的E-HICH的示意图。Figure 4 is a schematic diagram of E-HICH switching from 10ms TTI to 2ms TTI in the modified scheme.
具体实施方式Detailed ways
下面参考附图，详细说明本发明的具体实施方式。The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.
本发明通过明确规定在TTI切换时，如果有切换后的E-HICH信息需要发送，则立刻停止切换前的E-HICH信息的发送，做到NodeB和UE的一致处理。The present invention clearly stipulates that when there is E-HICH information after switching to be sent during TTI switching, the transmission of E-HICH information before switching is immediately stopped, so as to achieve consistent processing between NodeB and UE.
图2是根据本发明的实施例的传输时间间隔切换方法的流程图。如图2所示，该方法包括以下步骤：Fig. 2 is a flowchart of a transmission time interval switching method according to an embodiment of the present invention. As shown in Figure 2, the method includes the following steps:
步骤S202，无线网络控制器建立与节点B之间的支持增强专用信道的无线链路，节点B按照无线网络控制器的配置进行正常的增强专用信道通信。Step S202, the radio network controller establishes a radio link supporting the enhanced dedicated channel with the node B, and the node B performs normal enhanced dedicated channel communication according to the configuration of the radio network controller.
步骤S204，无线网络控制器向节点B发送无线链路重配置命令以重新配置增强专用信道的信息，并切换增强专用信道的当前传输时间间隔。Step S204, the radio network controller sends a radio link reconfiguration command to the Node B to reconfigure the information of the enhanced dedicated channel, and switch the current transmission time interval of the enhanced dedicated channel.
步骤S206，节点B根据无线链路重配置命令进行重配置处理，发送重配置后的增强专用信道的信息。In step S206, the Node B performs reconfiguration processing according to the radio link reconfiguration command, and sends information of the reconfigured enhanced dedicated channel.
其中，无线链路重配置命令包括生效时间，在步骤S206中，在生效时间到达时，节点B发送重配置后的增强专用信道的信息。在生效时间到达时节点B仍在发送重配置前的增强专用信道的信息的情况下，停止发送重配置前的增强专用信道的信息而仅发送重配置后的增强专用信道的信息。Wherein, the radio link reconfiguration command includes an effective time, and in step S206, when the effective time arrives, the Node B sends the reconfigured enhanced dedicated channel information. When the effective time arrives, when the Node B is still sending the information of the enhanced dedicated channel before the reconfiguration, it stops sending the information of the enhanced dedicated channel before the reconfiguration and only sends the information of the enhanced dedicated channel after the reconfiguration.
其中，传输时间间隔切换方法用于将10ms的传输时间间隔切换为2ms。Wherein, the transmission time interval switching method is used to switch the transmission time interval of 10 ms to 2 ms.
图3是根据本发明的另一个实施例的传输时间间隔切换方法的流程图。如图3所示，该方法包括以下步骤：Fig. 3 is a flowchart of a transmission time interval switching method according to another embodiment of the present invention. As shown in Figure 3, the method includes the following steps:
步骤S302，RNC建立支持E-DCH的RL。Step S302, RNC establishes RL supporting E-DCH.
步骤S304，Node B按照RNC的配置进行正常的E-DCH通信。In step S304, the Node B performs normal E-DCH communication according to the configuration of the RNC.
步骤S306，RNC通过RL重配命令重新配置E-DCH的信息，切换E-DCH的TTI从10ms到2ms，如图4所示，E-DCH的重配生效时间为系统帧号(SFN，System Frame Number)为(N+2)对4096取模。Step S306, RNC reconfigures the information of E-DCH by RL reconfiguration command, switches the TTI of E-DCH from 10ms to 2ms, as shown in Figure 4, the reconfiguration effective time of E-DCH is system frame number (SFN, System Frame Number) is (N+2)
步骤S308，Node B根据重配的生效时间的配置进行生效处理。该步骤包括：In step S308, the Node B performs validation processing according to the configuration of the validation time of the reconfiguration. This step includes:
步骤一，重配生效时间未到，继续重配前的处理。In
步骤二，重配生效时间到，Node B收到重配后的E-DCH数据，如附图4中标出的2ms TTI对应的HPN(序号为N的HARQProcess)。
步骤三，从第二步中的HPN对应的E-HICH的发送时刻起，停止发送重配前的10ms TTI的E-DCH对应的E-HICH。Step 3: From the moment of sending the E-HICH corresponding to the HPN in the second step, stop sending the E-HICH corresponding to the E-DCH of the 10ms TTI before the reconfiguration.
步骤四，Node B发送重配后2ms E-DCH TTI对应的E-HICH。
步骤五，重配过程结束。Step 5, the reconfiguration process ends.
通过本发明，解决了TTI从10ms切换到2ms时E-HICH的不确定性，并降低了在TTI从10ms切换到2ms时的重传率。The invention solves the uncertainty of E-HICH when the TTI is switched from 10ms to 2ms, and reduces the retransmission rate when the TTI is switched from 10ms to 2ms.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009059524A1 (en)* | 2007-10-31 | 2009-05-14 | Huawei Technologies Co., Ltd. | Method, apparatus and system for realizing information transmission |
| WO2010028605A1 (en)* | 2008-09-11 | 2010-03-18 | 大唐移动通信设备有限公司 | Method, system and device for data transmission in paging state |
| WO2010124438A1 (en)* | 2009-04-27 | 2010-11-04 | 华为技术有限公司 | Method and device for switching |
| WO2011109990A1 (en)* | 2010-03-12 | 2011-09-15 | 中兴通讯股份有限公司 | Method and system for changing use of enhanced dedicated channel transmission bearing |
| WO2013013576A1 (en)* | 2011-07-22 | 2013-01-31 | 华为技术有限公司 | Method, user equipment and network-side equipment for selecting uplink common e-dch resources |
| US8730887B2 (en) | 2007-10-31 | 2014-05-20 | Huawei Technologies Co., Ltd. | Method, apparatus and system for transmitting information |
| CN112351499A (en)* | 2019-08-09 | 2021-02-09 | 华为技术有限公司 | Method and device for sending hybrid automatic repeat request acknowledgement information |
- 2007
- 2007-12-04CNCN2007101952149Apatent/CN101203048B/ennot_activeExpired - Fee Related
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| US8797980B2 (en) | 2007-10-31 | 2014-08-05 | Huawei Technologies Co., Ltd. | Method, apparatus and system for transmitting information |
| US9521668B2 (en) | 2007-10-31 | 2016-12-13 | Huawei Technologies Co., Ltd | Method and radio network controller for transmitting information |
| US9497783B2 (en) | 2007-10-31 | 2016-11-15 | Huawei Technologies Co., Ltd. | Method, apparatus and system for transmitting information |
| US9357542B2 (en) | 2007-10-31 | 2016-05-31 | Huawei Technologies Co., Ltd | Method and radio network controller for transmitting information |
| WO2009059524A1 (en)* | 2007-10-31 | 2009-05-14 | Huawei Technologies Co., Ltd. | Method, apparatus and system for realizing information transmission |
| US8730887B2 (en) | 2007-10-31 | 2014-05-20 | Huawei Technologies Co., Ltd. | Method, apparatus and system for transmitting information |
| US8780822B2 (en) | 2007-10-31 | 2014-07-15 | Huawei Technologies Co., Ltd. | Method, apparatus and system for transmitting information |
| WO2010028605A1 (en)* | 2008-09-11 | 2010-03-18 | 大唐移动通信设备有限公司 | Method, system and device for data transmission in paging state |
| US8824369B2 (en) | 2009-04-27 | 2014-09-02 | Huawei Technologies Co., Ltd. | Method and device for switching |
| US9007952B2 (en) | 2009-04-27 | 2015-04-14 | Huawei Technologies Co., Ltd. | Method and device for switching |
| WO2010124438A1 (en)* | 2009-04-27 | 2010-11-04 | 华为技术有限公司 | Method and device for switching |
| CN102196523B (en)* | 2010-03-12 | 2016-03-02 | 中兴通讯股份有限公司 | A kind of method and system changing use E-DCH transmission bearer |
| CN102196523A (en)* | 2010-03-12 | 2011-09-21 | 中兴通讯股份有限公司 | Method and system for changing use of enhanced dedicated channel (E-DCH) transport bearer |
| WO2011109990A1 (en)* | 2010-03-12 | 2011-09-15 | 中兴通讯股份有限公司 | Method and system for changing use of enhanced dedicated channel transmission bearing |
| WO2013013576A1 (en)* | 2011-07-22 | 2013-01-31 | 华为技术有限公司 | Method, user equipment and network-side equipment for selecting uplink common e-dch resources |
| CN112351499A (en)* | 2019-08-09 | 2021-02-09 | 华为技术有限公司 | Method and device for sending hybrid automatic repeat request acknowledgement information |
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| CN101203048B (en) | 2012-06-06 |
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