WO2012155638A1 - 一种半静态调度方式下数据的传输方法及用户设备 - Google Patents
一种半静态调度方式下数据的传输方法及用户设备 Download PDFInfo
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- WO2012155638A1 WO2012155638A1 PCT/CN2012/072460 CN2012072460W WO2012155638A1 WO 2012155638 A1 WO2012155638 A1 WO 2012155638A1 CN 2012072460 W CN2012072460 W CN 2012072460W WO 2012155638 A1 WO2012155638 A1 WO 2012155638A1
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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
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1887—Scheduling and prioritising arrangements
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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
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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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
- H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
Definitions
- the present invention relates to the field of wireless digital communications, and in particular, to a data transmission method and user equipment in a semi-persistent scheduling mode. Background technique
- LTE Long Term Evolution
- VoIP Voice IP over Internet Protocol
- Packet data transmission technology to carry voice services.
- the dedicated channel is cancelled, and the distributed resource allocation mode of the shared channel is adopted, so that the wireless resource can be utilized to the maximum extent.
- the rich service type and high-speed data rate put forward high requirements for the packet data transmission technology of the LTE system.
- the arrival time interval meets certain regular real-time services, and the media access of the LTE system
- the control layer introduces a new scheduling method, that is, semi-static scheduling.
- the evolved base station In the scheduling transmission process of the LTE system, the evolved base station (eNB, evolved NodeB) indicates the current scheduling information of the user equipment (UE, User Equipment) through the Physical Downlink Control Channel (PDCCH), the UE.
- the identification is a semi-static scheduling mode, and the current scheduling information is saved, and the service data is transmitted or received at the same time-frequency resource location every fixed period.
- the use of semi-persistent scheduling to transmit data can make full use of the characteristics of the periodic arrival of voice data packets, one-time authorization and periodic use, which can effectively save the PDCCH resources used by the LTE system for scheduling indication.
- the PDCCH may adopt an adaptive hybrid automatic repeat request (HARQ, Hybrid Automatic Repeat Request) or a non-adaptive HARQ. Style.
- the non-adaptive HARQ does not need to be authorized.
- the UE performs retransmission of service data according to the PDCCH resource and modulation mode used in the previous transmission, and the adaptive HARQ needs to temporarily identify the cell radio network temporary identifier by semi-static scheduling (SPS-C- RNTI, Semi-Persistent Scheduling Cell Radio Network Temporary Identifier)
- SPS-C- RNTI Semi-Persistent Scheduling Cell Radio Network Temporary Identifier
- the masked PDCCH is authorized for transmission.
- the UE receives the activation information of the SPS on the PDCCH.
- the new data has a fixed period, which is equivalent to a timer. When the timer expires, the new one is sent. Data, there is no need to wait for the PDCCH to obtain authorization; the retransmission data also has a fixed time interval, which is equivalent to another timer. When the duration of one timer is an integer multiple of another timer, new data and heavy data may be generated. In order to avoid collision of data, it is necessary to adjust an offset in two adjacent cycles, that is, adjust the duration of two timers to avoid sending collisions, but maintain two timers, and pair timers. The length of time to do the offset calculation will cost a lot of system overhead. Summary of the invention
- the main purpose of the present invention is to provide a data transmission method and user equipment in a semi-persistent scheduling mode, which reduces system overhead and solves the collision problem between new data and retransmitted data in a semi-static scheduling mode.
- the present invention provides a data transmission method in a semi-persistent scheduling mode, including: semi-static scheduling data that is scrambled by a semi-persistent scheduling cell radio network temporary identifier (SPS-C-RNTI) received by a user equipment (UE)
- SPS-C-RNTI semi-persistent scheduling cell radio network temporary identifier
- the UE sets a periodic timer for new data transmission when the activation signaling of the transmission is performed and the non-adaptive hybrid automatic repeat request (HARQ) is used for data retransmission;
- HARQ hybrid automatic repeat request
- the UE After the period timer expires, the UE sends new data on the original time-frequency resource, and sends retransmission data when the next subframe after the new data transmission is completed.
- the method before the UE sets a periodic timer for new data transmission, the method further includes Includes:
- the UE determines whether the received SPS-C-RNTI scrambled data is the activation signaling of the semi-persistent scheduling transmission; when the received SPS-C-RNTI scrambled data is not the activation signaling of the semi-persistent scheduling transmission, the UE Normally transmitting data by using a non-semi-static scheduling transmission mode;
- the UE determines whether to use non-adaptive HARQ for data retransmission; when non-adaptive HARQ is used for data retransmission, the UE continues to listen to the physical downlink control channel (PDCCH) and receives the SPS-C-RNTI scrambled data.
- PDCCH physical downlink control channel
- the method before the UE determines whether the received SPS-C-RNTI scrambled data is the activation signaling of the semi-persistent scheduling transmission, the method further includes: the UE receiving the SPS-C-RNTI received on the PDCCH. Scrambled data.
- the method further includes: determining, by the UE, whether the period timer expires;
- the method further includes: if the periodic timer does not time out, the UE reduces the duration of the periodic timer by one frame, and continues to determine whether the periodic timer expires.
- the UE receives the SPS-C-RNTI scrambled data received on the PDCCH as:
- the UE monitors the PDCCH.
- the UE receives the data, and uses the SPS-C-RNTI mask to decode the data.
- the received data is SPS-C-RNTI scrambled data.
- the UE determines whether the received SPS-C-RNTI scrambled data is a semi-static scheduling transmission activation signaling:
- the UE checks whether the fixed bit in the PDCCH is set to a predetermined value.
- the SPS-C-RNTI scrambled data is the activation signaling of the semi-persistent scheduling transmission; SPS-C-RNTI scrambled data is not an activation letter for semi-persistent scheduling transmission Order.
- the period timer for setting the new data transmission by the UE is:
- the UE saves the current scheduling information sent by the eNB in advance, and sets a period timer according to a fixed period of the new data transmission, and saves the duration of the fixed period; the duration of the fixed period is used to calculate the starting point of the next new data transmission.
- the retransmission data is sent as follows:
- the UE When the next subframe arrives after the new data transmission is completed, if the current retransmission data needs to be sent, the UE directly transmits the retransmission data.
- the present invention further provides a user equipment, including: a setting module and a sending module; wherein, the setting module is configured to: when the SPS-C-RNTI scrambled data received by the UE is activated signaling for semi-persistent scheduling transmission, When the non-adaptive HARQ performs data retransmission, a cycle timer for setting a new data transmission is set;
- the sending module is configured to send new data on the original time-frequency resource after the timeout timer expires, and send the retransmitted data when the next subframe after the new data transmission is completed.
- the user equipment further includes:
- a receiving module configured to receive SPS-C-RNTI scrambled data received on the PDCCH; and a first determining module, configured to determine whether the received SPS-C-RNTI scrambled data is activated by semi-persistent scheduling transmission
- the signaling is also used to: when the received SPS-C-RNTI scrambled data is not the activation signaling of the semi-persistent scheduling transmission, the trigger sending module sends the data normally by using the non-semi-static scheduling transmission mode;
- a second determining module configured to determine whether to use non-adaptive HARQ for data retransmission; and when used for data retransmission without non-adaptive HARQ, the triggering receiving module continues to monitor the PDCCH, and receives the SPS-C-RNTI plus Disturbed data;
- a third determining module configured to determine whether the periodic timer expires, and if not, the periodic timing The duration of the device is decremented by one frame, and it is determined whether the cycle timer has timed out.
- the data transmission method and the user equipment in the semi-persistent scheduling mode provided by the present invention when the SPS-C-RNTI scrambled data received by the UE is the activation signaling of the semi-persistent scheduling transmission, and the non-adaptive HARQ is used.
- the UE sets a periodic timer for new data transmission; after the periodic timer expires, the UE sends new data on the original time-frequency resource, and when the next subframe after the new data transmission is completed, The retransmission data is sent.
- the transmission method the collision problem between the new data and the retransmitted data in the semi-persistent scheduling mode can be solved, and since only one timer is set, the offset adjustment of the timer is not required. Therefore, the system can reduce the calculation of the transmission period, thereby reducing the system overhead and improving the processing performance of the data in the semi-static scheduling mode.
- FIG. 1 is a schematic flowchart of a method for transmitting data in a semi-static scheduling manner according to the present invention
- FIG. 2 is a schematic structural diagram of a user equipment according to the present invention. detailed description
- the basic idea of the present invention is: when the SPS-C-RNTI scrambled data received by the UE is the activation signaling of the semi-persistent scheduling transmission, and the data retransmission is performed by using the non-adaptive HARQ, the UE sets the new data transmission. After the periodic timer expires, the UE sends new data on the original time-frequency resource, and sends retransmission data when the next subframe after the new data transmission is completed.
- FIG. 1 is a schematic flowchart of a method for transmitting data in a semi-persistent scheduling mode according to the present invention. As shown in FIG. 1, the method includes the following steps:
- Step 101 The UE receives SPS-C-RNTI scrambled data received on the PDCCH. Specifically, the UE monitors the PDCCH. When data arrives on the PDCCH, the UE receives the data, and uses the SPS-C-RNTI mask to decode the data. If the decoding can be implemented, the received data is the SPS-C-RNTI. Scrambled data.
- Step 102 The UE determines whether the data scrambled by the SPS-C-RNTI is the activation signaling of the semi-persistent scheduling transmission. If yes, go to step 103. If no, go to step 104.
- the UE determines whether the data scrambled by the SPS-C-RNTI is the activation signaling of the semi-persistent scheduling transmission, because although the SPS-C-RNTI scrambled data is received on the PDCCH, it does not indicate that this is half.
- the activation signaling of the static scheduling transmission the UE receives the data on the PDCCH by using the RNTI of the PDCCH to demask the PDCCH of the PDCCH.
- the UE may not use the SPS- The CRC of the C-RNTI scrambled PDCCH is incorrectly considered to be the activation signaling of the semi-persistent scheduling transmission; therefore, after the UE determines that the SPS-C-RNTI scrambled data is received, it also needs to check the fixed bit in the PDCCH.
- the UE Whether it is set to a predetermined value, only when the fixed bits are all of the predetermined values, the UE considers that the data scrambled by the SPS-C-RNTI is the activation signaling of the semi-persistent scheduling transmission, and performs step 103; If the fixed bits are not all of the predetermined values, the UE considers that the data scrambled by the SPS-C-RNTI is not the activation signaling of the semi-persistent scheduling transmission, and step 104 is performed.
- Step 103 The UE determines whether to use the non-adaptive HARQ for data retransmission. If yes, go to step 105. If no, go to step 101.
- the UE when the data scrambled by the SPS-C-RNTI is the activation signaling of the semi-persistent scheduling transmission, only when the data is retransmitted by using the non-adaptive HARQ, the new data and the retransmitted data may be generated. Collision, therefore, the UE also needs to determine whether the non-adaptive HARQ is used for data retransmission in the PDCCH. If yes, go to step 105. If no, the UE needs to continue to monitor the PDCCH, receive the SPS-C-RNTI scrambled data, and execute Step 101;
- the HARQ is divided into two types: non-adaptive and adaptive, that is, whether the non-adaptive PDCCH is adopted according to whether the data feature changes or not Responsive HARQ performs data retransmission. If the data characteristics change during retransmission, it is adaptive HARQ. If the data characteristics during retransmission do not change, it is non-adaptive HARQ.
- the retransmission data characteristics It includes the allocation and scheduling of resource blocks, the length of the transport block, the duration of the transmission, and so on.
- Step 104 The UE sends data normally by using a non-semi-static scheduling transmission mode.
- Step 105 The UE sets a cycle timer for new data transmission.
- the current scheduling information that is sent by the eNB to the UE by using the PDCCH is used to indicate that the scheduling mode of the UE is a semi-persistent scheduling mode, so the UE saves the current scheduling information.
- the UE also needs to set a period timer according to a fixed period of new data transmission, and saves the duration of the fixed period. The starting point of the next new data transmission can be calculated according to the duration of the fixed period; the fixed period of the new data transmission is the network side. Pre-configured on the UE;
- Step 106 the UE determines whether the period timer expires, if yes, step 107 is performed, if no, step 108 is performed;
- the UE determines whether the set period timer of the new data transmission is timed out. If the period timer expires, step 107 is performed. If the period timer does not expire, step 108 is performed.
- Step 107 The UE sends new data on the original time-frequency resource.
- the set period timer of the new data transmission expires, it indicates that the UE needs to send new data, so the UE sends new data on the original time-frequency resource.
- Step 108 The UE reduces the duration of the period timer by one frame, and continues to determine whether the period timer is Timeout, go to step 106.
- Step 109 When the next subframe after the new data transmission is completed, the UE sends the retransmission data.
- the UE directly sends the retransmitted data.
- FIG. 2 is a schematic structural diagram of the user equipment of the present invention.
- the user equipment includes: a setting module 21 and a sending module 22;
- the setting module 21 is configured to: when the SPS-C-RNTI scrambled data received by the UE is the activation signaling of the semi-persistent scheduling transmission, and the non-adaptive HARQ is used for the data retransmission, setting the period timing of the new data transmission Device
- the sending module 22 is configured to: after the timeout timer expires, send new data on the original time-frequency resource, and send retransmission data when the next subframe after the new data transmission is completed.
- the user equipment also includes:
- the receiving module 23 is configured to receive the SPS-C-RNTI scrambled data received on the PDCCH.
- the first determining module 24 is configured to determine whether the received SPS-C-RNTI scrambled data is a semi-persistent scheduled transmission. Activation signaling, if not, the trigger sending module 22 normally transmits data by using a non-semi-static scheduling transmission mode;
- the second determining module 25 is configured to determine whether to use the non-adaptive HARQ for data retransmission. If not, the trigger receiving module 23 continues to monitor the PDCCH and receives the SPS-C-RNTI scrambled data.
- the third determining module 26 is configured to determine whether the periodic timer expires. If not, reduce the duration of the periodic timer by one frame, and continue to determine whether the periodic timer expires.
- the receiving module 23 receives the SPS-C-RNTI scrambled data received on the PDCCH as: monitoring the PDCCH, receiving the data when there is data on the PDCCH, and using the SPS-C-RNTI
- the mask decodes the data, and when the decoding is possible, the received data is the data scrambled by the SPS-C-RNTI.
- the first determining module 24 determines whether the received SPS-C-RNTI scrambled data is a semi-persistent scheduling transmission activation signaling: checking whether a fixed bit in the PDCCH is set to a predetermined value, when fixed When the bits are all pre-defined values, the data scrambled by the SPS-C-RNTI is the activation signaling of the semi-persistent scheduling transmission; conversely, the data scrambled by the SPS-C-RNTI is not the activation signaling of the semi-persistent scheduling transmission. .
- the setting module 21 sets a periodic timer for the new data transmission to: save the current scheduling information sent by the eNB in advance, and set a periodic timer according to a fixed period of the new data transmission, and save the duration of the fixed period; The duration is used to calculate the starting point of the next new data transfer.
- the sending module 22 sends the retransmission data when the next subframe after the new data transmission is completed: when the new data is sent, when the next subframe arrives, if the current retransmission data needs to be sent, the UE directly Send retransmission data.
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Abstract
本发明公开一种半静态调度方式下的数据的传输方法,包括:当用户设备(UE)收到的半静态调度小区无线网络临时标识(SPS-C-RNTI)加扰的数据为半静态调度传输的激活信令,且采用非自适应性混合自动重传请求(HARQ)进行数据重传时,UE设置新数据传输的周期定时器;所述周期定时器超时后,UE在原有的时频资源上发送新数据,并在新数据发送完成后的下一个子帧到达时,发送重传数据;本发明还提供一种用户设备。根据本发明的技术方案,降低系统开销的同时解决了半静态调度方式下新数据与重传数据的碰撞问题。
Description
一种半静态调度方式下数据的传输方法及用户设备 技术领域
本发明涉及无线数字通信领域, 尤其涉及一种半静态调度方式下的数 据的传输方法及用户设备。 背景技术
与传统的 3G 系统不同, 长期演进(LTE, Long Term Evolution ) 系统 很重要的一个特点就是取消了全部电路域的业务, 提出了全 IP 网的概念, 利用网络电话( VoIP, Voice over Internet Protocol ) 的分组数据传输技术来 承载语音业务。 LTE 系统中取消了专用信道, 采用共享信道的调度式资源 分配方式, 使得无线资源可以得到最大限度的有效利用。
丰富的业务类型和高速的数据速率, 对 LTE 系统的分组数据传输技术 提出了很高的要求, 针对 VoIP数据包大小比较固定, 到达时间间隔满足一 定规律的实时性业务, LTE 系统的媒体接入控制层引入了一种新的调度方 式, 即半静态调度方式。
半静态调度方式在 LTE 系统的调度传输过程中, 演进的基站(eNB, evolved NodeB )通过物理下行控制信道( PDCCH, Physical Downlink Control Channel )指示用户设备 ( UE , User Equipment ) 当前的调度信息, UE识别 是半静态调度方式, 则保存当前的调度信息, 每隔固定的周期在相同的时 频资源位置上进行业务数据的发送或接收。 使用半静态调度方式传输数据, 可充分利用语音数据包周期性到达的特点, 一次授权, 周期使用, 可以有 效地节省 LTE系统用于调度指示的 PDCCH 资源。
对于半静态传输方式, PDCCH 可以采用自适应性混合自动重传请求 ( HARQ, Hybrid Automatic Repeat Request )或非自适应性 HARQ 两种方
式。 非自适应性 HARQ 不需要进行授权, UE按照上一次传输所使用的 PDCCH资源和调制方式进行业务数据的重传, 而自适应性 HARQ需要通 过半静态调度小区无线网络临时标识 ( SPS-C-RNTI , Semi-Persistent Scheduling Cell Radio Network Temporary Identifier )掩码的 PDCCH进行授 权传输。 LTE 系统中, UE在 PDCCH上收到 SPS的激活信息, 若上行采取 的是非自适应性 HARQ, 则新发数据具有固定的周期, 该周期相当于一个 定时器, 当定时器超时则发送新的数据, 不需要等待 PDCCH上获取授权; 重传数据亦具有固定的时间间隔, 相当于另一个定时器, 当一个定时器的 时长是另一个定时器的整数倍时, 就可能产生新数据与重传数据之间的碰 撞, 为了避免数据碰撞, 需要在相邻的两个周期调整一个偏移量, 即调整 两个定时器的时长, 避免发送碰撞, 但是维护两个定时器, 且对定时器的 时长做偏移计算, 将耗费大量的系统开销。 发明内容
有鉴于此, 本发明的主要目的在于提供一种半静态调度方式下的数据 的传输方法及用户设备, 降低系统开销的同时解决了半静态调度方式下新 数据与重传数据的碰撞问题。
为达到上述目的, 本发明的技术方案是这样实现的:
本发明提供一种半静态调度方式下的数据的传输方法, 包括: 当用户设备 ( UE ) 收到的半静态调度小区无线网络临时标识 ( SPS-C-RNTI )加扰的数据为半静态调度传输的激活信令, 且采用非自适 应性混合自动重传请求(HARQ )进行数据重传时, UE设置新数据传输的 周期定时器;
所述周期定时器超时后, UE在原有的时频资源上发送新数据, 并在新 数据发送完成后的下一个子帧到达时, 发送重传数据。
上述方法中, 所述 UE设置新数据传输的周期定时器之前,该方法还包
括:
UE判断收到的 SPS-C-RNTI加扰的数据是否为半静态调度传输的激活 信令; 收到的 SPS-C-RNTI加扰的数据不为半静态调度传输的激活信令时, UE采用非半静态调度传输方式正常发送数据;
UE判断是否采用非自适应性 HARQ进行数据重传; 不采用非自适应 性 HARQ进行数据重传时, UE继续监听物理下行控制信道(PDCCH ), 接 收 SPS-C-RNTI加扰的数据。
上述方法中,所述 UE判断收到的 SPS-C-RNTI加扰的数据是否为半静 态调度传输的激活信令之前, 该方法还包括: UE接收在 PDCCH上收到的 SPS-C-RNTI加扰的数据。
上述方法中,
所述周期定时器超时后, UE在原有的时频资源上发送新数据之前, 该 方法还包括: UE判断周期定时器是否超时;
该方法还包括: 如果周期定时器没有超时, UE将周期定时器的时长减 一帧, 继续判断周期定时器是否超时。
上述方法中, 所述 UE接收在 PDCCH上收到的 SPS-C-RNTI加扰的数 据为:
UE监听 PDCCH, 当 PDCCH上有数据到达时, UE接收所述数据, 并 利用 SPS-C-RNTI 掩码对数据进行解码, 实现解码时, 接收的数据为 SPS-C-RNTI加扰的数据。
上述方法中,所述 UE判断收到的 SPS-C-RNTI加扰的数据是否为半静 态调度传输的激活信令为:
UE检查 PDCCH 中固定的比特位是否设置为预先规定的值, 当固定的 比特位全部为预先规定的值时, SPS-C-RNTI加扰的数据为半静态调度传输 的激活信令; 反之, SPS-C-RNTI加扰的数据不为半静态调度传输的激活信
令。
上述方法中, 所述 UE设置新数据传输的周期定时器为:
UE保存 eNB预先发送的当前的调度信息, 并根据新数据传输的固定 周期设置周期定时器, 保存所述固定周期的时长; 所述固定周期的时长用 于计算下次新数据传输的始点。
上述方法中, 所述在新数据发送完成后的下一个子帧到达时, 发送重 传数据为:
当新数据发送完成后, 下一个子帧到达时, 如果当前有重传数据需要 发送, UE直接发送重传数据。
本发明还提供一种用户设备, 包括: 设置模块和发送模块; 其中, 设置模块,用于当 UE收到的 SPS-C-RNTI加扰的数据为半静态调度传 输的激活信令, 且采用非自适应性 HARQ进行数据重传时, 设置新数据传 输的周期定时器;
发送模块, 用于所述周期定时器超时后, 在原有的时频资源上发送新 数据, 并在新数据发送完成后的下一个子帧到达时, 发送重传数据。
上述用户设备中, 该用户设备还包括:
接收模块, 用于接收在 PDCCH上收到的 SPS-C-RNTI加扰的数据; 第一判断模块,用于判断收到的 SPS-C-RNTI加扰的数据是否为半静态 调度传输的激活信令;还用于,收到的 SPS-C-RNTI加扰的数据不为半静态 调度传输的激活信令时, 触发发送模块采用非半静态调度传输方式正常发 送数据;
第二判断模块, 用于判断是否采用非自适应性 HARQ进行数据重传; 还用于不采用非自适应性 HARQ进行数据重传时, 触发接收模块继续监听 PDCCH, 接收 SPS-C-RNTI加扰的数据;
第三判断模块, 用于判断周期定时器是否超时, 如果否, 将周期定时
器的时长减一帧, 继续判断周期定时器是否超时。
本发明提供的半静态调度方式下的数据的传输方法及用户设备, 当 UE 收到的 SPS-C-RNTI加扰的数据为半静态调度传输的激活信令,且采用非自 适应性 HARQ进行数据重传时, UE设置新数据传输的周期定时器; 所述 周期定时器超时后, UE在原有的时频资源上发送新数据, 并在新数据发送 完成后的下一个子帧到达时, 发送重传数据, 因此, 利用传输方法, 能够 解决半静态调度方式下的新数据与重传数据之间的碰撞问题, 同时由于只 设置了一个定时器, 且不需要进行定时器的偏移调整, 因此可以减少了系 统对传输周期的计算, 从而降低系统开销, 提高半静态调度方式下数据的 处理性能。 附图说明
图 1是本发明实现半静态调度方式下的数据的传输方法的流程示意图; 图 2是本发明用户设备的结构示意图。 具体实施方式
本发明的基本思想是: 当 UE收到的 SPS-C-RNTI加扰的数据为半静态 调度传输的激活信令, 且采用非自适应性 HARQ进行数据重传时, UE设 置新数据传输的周期定时器; 所述周期定时器超时后, UE在原有的时频资 源上发送新数据, 并在新数据发送完成后的下一个子帧到达时, 发送重传 数据。
下面通过附图及具体实施例对本发明再做进一步的详细说明。
本发明提供一种半静态调度方式下的数据的传输方法, 图 1 是本发明 实现半静态调度方式下的数据的传输方法的流程示意图, 如图 1 所示, 该 方法包括以下步驟:
步驟 101 , UE接收在 PDCCH上收到的 SPS-C-RNTI加扰的数据;
具体的, UE监听 PDCCH, 当 PDCCH上有数据到达时, UE接收该数 据, 并利用 SPS-C-RNTI掩码对数据进行解码, 如果能够实现解码, 则表示 接收的数据为 SPS-C-RNTI加扰的数据。
步驟 102, UE判断 SPS-C-RNTI加扰的数据是否为半静态调度传输的 激活信令, 如果是, 执行步驟 103 , 如果否, 执行步驟 104;
具体的, UE判断 SPS-C-RNTI加扰的数据是否为半静态调度传输的激 活信令, 这是因为虽然 PDCCH上收到 SPS-C-RNTI加扰的数据, 但是并不 能说明这就是半静态调度传输的激活信令, UE对于 PDCCH 上数据的接 收是通过自身的 RNTI对 PDCCH 的 CRC 的解掩码得到的,对于 16 bit 的 SPS-C-RNTI掩码,UE 可能会将不用 SPS-C-RNTI加扰的 PDCCH 的 CRC 错误地认为是半静态调度传输的激活信令; 因此, UE 确定收到的是 SPS-C-RNTI加扰的数据后, 还需要检查 PDCCH 中固定的比特位是否设 置为预先规定的值, 只有当固定的比特位全部为预先规定的值时, UE 才认 为 SPS-C-RNTI加扰的数据为半静态调度传输的激活信令, 执行步驟 103; 反之,如果固定的比特位不是全部为预先规定的值,则 UE认为 SPS-C-RNTI 加扰的数据不为半静态调度传输的激活信令, 执行步驟 104。
步驟 103 , UE判断是否采用非自适应性 HARQ进行数据重传,如果是, 执行步驟 105, 如果否, 执行步驟 101 ;
具体的, 当 SPS-C-RNTI加扰的数据为半静态调度传输的激活信令时, 只有采用非自适应性 HARQ进行数据重传时, 才有可能出现新数据与重传 数据之间的碰撞, 因此, UE还需要判断 PDCCH 中是否采用非自适应性 HARQ进行数据重传, 如果是, 执行步驟 105 , 如果否, UE需要继续监听 PDCCH, 接收 SPS-C-RNTI加扰的数据, 执行步驟 101 ;
这里, 根据重传时的数据特征是否发生变化将 HARQ分为非自适应和 自适应两种,即根据数据特征是否发生变化判断 PDCCH中是否采用非自适
应性 HARQ进行数据重传, 如果重传时的数据特征发生变化, 则是自适应 性 HARQ, 如果重传时的数据特征没有发生变化, 则是非自适应性 HARQ; 其中, 重传的数据特征包括资源块的分配和调度方式、 传输块的长度、 传 输的持续时间等。
步驟 104, UE采用非半静态调度传输方式正常发送数据;
采用非半静态调度传输方式正常发送数据属于现有技术, 这里不再赘 述。
步驟 105 , UE设置新数据传输的周期定时器;
具体的, 当确定采用非自适应性 HARQ进行数据重传时, 说明 eNB之 前通过 PDCCH发送给 UE的当前的调度信息, 是指示 UE调度方式为半静 态调度方式, 因此 UE保存当前的调度信息; UE还需要根据新数据传输的 固定周期设置周期定时器, 并保存该固定周期的时长, 根据该固定周期的 时长可以计算下次新数据传输的始点; 所述新数据传输的固定周期是网络 侧预先在 UE上配置的;
与现有的技术方案相比, 此处只需要设置一个新数据传输的周期定时 器, 而不需要再设置一个周期重传定时器, 也不需要对设置的周期添加偏 移, 不需要考虑在第几个周期新数据与重传数据产生碰撞。
步驟 106, UE判断周期定时器是否超时, 如果是, 执行步驟 107, 如 果否, 执行步驟 108;
具体的, UE判断设置的新数据传输的周期定时器是否超时, 如果周期 定时器超时, 执行步驟 107, 如果周期定时器没有超时, 执行步驟 108。
步驟 107, UE在原有的时频资源上发送新数据;
具体的, 当设置的新数据传输的周期定时器超时后时,表示 UE需要发 送新数据, 因此 UE在原有的时频资源上发送新数据。
步驟 108, UE将周期定时器的时长减一帧, 继续判断周期定时器是否
超时, 执行步驟 106。
步驟 109, 当新数据发送完成后的下一个子帧到达时, UE发送重传数 据;
具体的, 当新数据发送完成后, 下一个子帧到达时, 判断当前是否有 重传数据需要发送, 如果有重传数据需要发送, UE直接发送重传数据。
为实现上述方法, 本发明还提供一种用户设备, 图 2是本发明用户设 备的结构示意图, 如图 2所示, 该用户设备包括: 设置模块 21和发送模块 22; 其中,
设置模块 21 , 用于当 UE收到的 SPS-C-RNTI加扰的数据为半静态调 度传输的激活信令, 且采用非自适应性 HARQ进行数据重传时, 设置新数 据传输的周期定时器;
发送模块 22, 用于所述周期定时器超时后, 在原有的时频资源上发送 新数据, 并在新数据发送完成后的下一个子帧到达时, 发送重传数据。
该用户设备还包括:
接收模块 23 , 用于接收在 PDCCH上收到的 SPS-C-RNTI加扰的数据; 第一判断模块 24, 用于判断收到的 SPS-C-RNTI加扰的数据是否为半 静态调度传输的激活信令, 如果否, 触发发送模块 22采用非半静态调度传 输方式正常发送数据;
第二判断模块 25 ,用于判断是否采用非自适应性 HARQ进行数据重传, 如果否, 触发接收模块 23继续监听 PDCCH, 接收 SPS-C-RNTI加扰的数 据;
第三判断模块 26, 用于判断周期定时器是否超时, 如果否, 将周期定 时器的时长减一帧, 继续判断周期定时器是否超时。
所述接收模块 23接收在 PDCCH上收到的 SPS-C-RNTI加扰的数据为: 监听 PDCCH,当 PDCCH上有数据到达时,接收该数据,并利用 SPS-C-RNTI
掩码对数据进行解码, 能够实现解码时,接收的数据为 SPS-C-RNTI加扰的 数据。
所述第一判断模块 24判断收到的 SPS-C-RNTI加扰的数据是否为半静 态调度传输的激活信令为: 检查 PDCCH 中固定的比特位是否设置为预先 规定的值, 当固定的比特位全部为预先规定的值时, SPS-C-RNTI加扰的数 据为半静态调度传输的激活信令; 反之, SPS-C-RNTI加扰的数据不为半静 态调度传输的激活信令。
所述设置模块 21设置新数据传输的周期定时器为:保存 eNB预先发送 的当前的调度信息, 并根据新数据传输的固定周期设置周期定时器, 保存 该固定周期的时长; 所述固定周期的时长用于计算下次新数据传输的始点。
所述发送模块 22在新数据发送完成后的下一个子帧到达时, 发送重传 数据为: 当新数据发送完成后, 下一个子帧到达时, 如果当前有重传数据 需要发送, UE直接发送重传数据。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围, 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进 等, 均应包含在本发明的保护范围之内。
Claims
1、 一种半静态调度方式下的数据的传输方法, 其特征在于, 该方法包 括:
当用户设备 ( UE ) 收到的半静态调度小区无线网络临时标识 ( SPS-C-RNTI )加扰的数据为半静态调度传输的激活信令, 且采用非自适 应性混合自动重传请求(HARQ )进行数据重传时, UE设置新数据传输的 周期定时器;
所述周期定时器超时后, UE在原有的时频资源上发送新数据, 并在新 数据发送完成后的下一个子帧到达时, 发送重传数据。
2、 根据权利要求 1所述的方法, 其特征在于, 所述 UE设置新数据传 输的周期定时器之前, 该方法还包括:
UE判断收到的 SPS-C-RNTI加扰的数据是否为半静态调度传输的激活 信令; 收到的 SPS-C-RNTI加扰的数据不为半静态调度传输的激活信令时,
UE采用非半静态调度传输方式正常发送数据;
UE判断是否采用非自适应性 HARQ进行数据重传; 不采用非自适应 性 HARQ进行数据重传时, UE继续监听物理下行控制信道( PDCCH ) , 接收 SPS-C-RNTI加扰的数据。
3、 根据权利要求 2 所述的方法, 其特征在于, 所述 UE 判断收到的 SPS-C-RNTI加扰的数据是否为半静态调度传输的激活信令之前, 该方法还 包括: UE接收在 PDCCH上收到的 SPS-C-RNTI加扰的数据。
4、 根据权利要求 1所述的方法, 其特征在于,
所述周期定时器超时后, UE在原有的时频资源上发送新数据之前, 该 方法还包括: UE判断周期定时器是否超时;
该方法还包括: 如果周期定时器没有超时, UE将周期定时器的时长减 一帧, 继续判断周期定时器是否超时。
5、根据权利要求 3所述的方法, 其特征在于, 所述 UE接收在 PDCCH 上收到的 SPS-C-RNTI加扰的数据为:
UE监听 PDCCH, 当 PDCCH上有数据到达时, UE接收所述数据, 并 利用 SPS-C-RNTI 掩码对数据进行解码, 实现解码时, 接收的数据为 SPS-C-RNTI加扰的数据。
6、 根据权利要求 2 所述的方法, 其特征在于, 所述 UE 判断收到的 SPS-C-RNTI加扰的数据是否为半静态调度传输的激活信令为:
UE检查 PDCCH 中固定的比特位是否设置为预先规定的值, 当固定的 比特位全部为预先规定的值时, SPS-C-RNTI加扰的数据为半静态调度传输 的激活信令; 反之, SPS-C-RNTI加扰的数据不为半静态调度传输的激活信 令。
7、 根据权利要求 1所述的方法, 其特征在于, 所述 UE设置新数据传 输的周期定时器为:
UE保存 eNB预先发送的当前的调度信息, 并根据新数据传输的固定 周期设置周期定时器, 保存所述固定周期的时长; 所述固定周期的时长用 于计算下次新数据传输的始点。
8、 根据权利要求 1所述的方法, 其特征在于, 所述在新数据发送完成 后的下一个子帧到达时, 发送重传数据为:
当新数据发送完成后, 下一个子帧到达时, 如果当前有重传数据需要 发送, UE直接发送重传数据。
9、 一种用户设备, 其特征在于, 该用户设备包括: 设置模块和发送模 块; 其中,
设置模块,用于当 UE收到的 SPS-C-RNTI加扰的数据为半静态调度传 输的激活信令, 且采用非自适应性 HARQ进行数据重传时, 设置新数据传 输的周期定时器; 发送模块, 用于所述周期定时器超时后, 在原有的时频资源上发送新 数据, 并在新数据发送完成后的下一个子帧到达时, 发送重传数据。
10、 根据权利要求 9所述的用户设备, 其特征在于, 该用户设备还包 括:
接收模块, 用于接收在 PDCCH上收到的 SPS-C-RNTI加扰的数据; 第一判断模块,用于判断收到的 SPS-C-RNTI加扰的数据是否为半静态 调度传输的激活信令;还用于,收到的 SPS-C-RNTI加扰的数据不为半静态 调度传输的激活信令时, 触发发送模块采用非半静态调度传输方式正常发 送数据;
第二判断模块, 用于判断是否采用非自适应性 HARQ进行数据重传; 还用于不采用非自适应性 HARQ进行数据重传时, 触发接收模块继续监听 PDCCH, 接收 SPS-C-RNTI加扰的数据;
第三判断模块, 用于判断周期定时器是否超时, 如果否, 将周期定时 器的时长减一帧, 继续判断周期定时器是否超时。
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CN101686114A (zh) * | 2008-09-23 | 2010-03-31 | 华为技术有限公司 | 终端、半静态调度数据处理方法及系统 |
CN101645764A (zh) * | 2008-09-28 | 2010-02-10 | 中国移动通信集团公司 | 用户上行数据调度方法及用户设备 |
CN102355334A (zh) * | 2011-07-22 | 2012-02-15 | 中兴通讯股份有限公司 | 一种半静态调度方式下数据的传输方法及用户设备 |
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WO2017186014A1 (zh) * | 2016-04-28 | 2017-11-02 | 上海朗帛通信技术有限公司 | 一种无线通信中的ue和基站中的方法和装置 |
CN112153748A (zh) * | 2019-06-27 | 2020-12-29 | 普天信息技术有限公司 | 随机接入方法、移动终端及网络侧设备 |
Also Published As
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CN102355334A (zh) | 2012-02-15 |
CN102355334B (zh) | 2017-06-09 |
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