WO2012167629A1 - Drx模式下终端保持上行同步的处理方法及装置 - Google Patents

Drx模式下终端保持上行同步的处理方法及装置 Download PDF

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Publication number
WO2012167629A1
WO2012167629A1 PCT/CN2012/070922 CN2012070922W WO2012167629A1 WO 2012167629 A1 WO2012167629 A1 WO 2012167629A1 CN 2012070922 W CN2012070922 W CN 2012070922W WO 2012167629 A1 WO2012167629 A1 WO 2012167629A1
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Prior art keywords
command
base station
tatimer
time
drx
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PCT/CN2012/070922
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English (en)
French (fr)
Inventor
奚水清
录显明
刘娟娟
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中兴通讯股份有限公司
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Priority to JP2014513885A priority Critical patent/JP5724036B2/ja
Publication of WO2012167629A1 publication Critical patent/WO2012167629A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/004Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/0005Synchronisation arrangements synchronizing of arrival of multiple uplinks

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for maintaining uplink synchronization of a terminal in a discontinuous reception (DRX) mode.
  • DRX discontinuous reception
  • the system in order to save battery consumption of user equipment (User Equipment, UE, also called terminal), the system is configured with Discontinuous Reception (DRX) function. .
  • the DRX can stop the UE from monitoring the Physical Downlink Control Channel (PDCCH) for a certain period of time.
  • PDCCH Physical Downlink Control Channel
  • DRX Cycle refers to the periodic repetition of duration (OnDuration) and inactivity time (Inactive).
  • the OnDuration Timer defines the number of subframes that the UE needs to continuously monitor the PDCCH at the beginning of the DRX cycle.
  • FIG. 1 is a schematic diagram of the working principle of the DRX according to the related art.
  • the active time of the UE includes a duration timer or a DRX inactivity timer or a DRX retransmission timer. Or competing to resolve the time when the timer is running; and the time when the Scheduling Request (SR) is suspended; and the Hybrid Automatic Repeat ReQuest (HARQ) retransmission to allocate the uplink authorization may occur; And after the UE successfully receives the random access response message, the time when the PDCCH indicates that there is a new transmission of the Cell Radio Network Temporary Identifier (C-RNII) or the temporary C-RNTI of the UE has not been received.
  • C-RNII Cell Radio Network Temporary Identifier
  • the UE only monitors during active time.
  • the time alignment timer (timeAlignmentTimer) is a timer for the LTE system to maintain the uplink synchronization state of the UE.
  • the maintenance of the uplink synchronization state is a basic condition for the UE to communicate with the eNodeB. After the UE obtains the synchronization, the UE may become out of synchronization due to the clock offset or the channel condition of both the eNodeB.
  • the time alignment timing is configured to infinity, if the TA adjustment value is found to be non-zero by the uplink measurement, the TA command needs to be issued.
  • the eNodeB When the time alignment timing timer is configured to a finite length, the eNodeB must send a Timing Advance Command MAC control element (TA command) to the UE within the time alignmentTimer timeout period, and adjust the uplink timing of the UE or It is confirmed that if the UE does not receive the TA command when the timeAlignmentTimer times out, the UE considers that the uplink is out of synchronization, and when there is uplink or downlink data, the UE needs to re-random access to obtain synchronization.
  • TA command Timing Advance Command MAC control element
  • the time alignment timer (TATimer) maintained by the base station side is timeAlignmentTimer minus one TA transmission advance time. (eg 30ms), the base station should send a TA command before the TATimer times out.
  • the main purpose of the present invention is to provide a processing method and apparatus for maintaining uplink synchronization in a DRX mode, to solve the problem in the prior art when the UE is configured with the DRX, when the TATimer time period is reached, and the TA command needs to be sent, The UE is not in the active time, causing the UE to fail to receive the TA command and enter the uplink out-of-synchronization state.
  • a processing method for a terminal to maintain uplink synchronization in a DRX mode is provided.
  • the processing method for the terminal to maintain the uplink synchronization in the DRX mode includes: recording, by using a first counter in the base station, a first time length in which the terminal does not perform data scheduling; determining whether the first time length is greater than the first threshold, where When the first time length is greater than or equal to the first threshold, the base station does not send the timing advance TA command; when the first time length is less than the first threshold, the base station selects the timing duration and discontinuous reception according to the time alignment timer TATimer. The result of the comparison of the DRX cycles is determined to send the TA command.
  • the determining, by the base station, the sending the TA command according to the comparison between the timing duration of the time alignment timer TATimer and the discontinuous reception DRX cycle includes: when the timing duration of the TATimer is greater than the DRX cycle, the base station lasts the last duration before the TATimer times out Sending a TA command; when the timing duration of the TATimer is equal to the DRX cycle, the base station transmits a TA command every time duration; when the timing duration of the TATimer is less than the DRX cycle, the base station records the terminal in the inactive state by using the second counter The second time length, when the second time length is greater than the second threshold, the base station sends a TA command.
  • the step of the base station transmitting the TA command in the last duration before the TATimer times out includes: determining whether the timing duration of the TATimer times out, if the timeout period from the timing of the TATimer is further A DRX sends a TA command.
  • the base station when the timing duration of the TATimer is less than the DRX period, the base station records the second time length of the terminal in the inactive state by using the second counter, and when the second time length is greater than the second threshold, the base station sends the TA.
  • the command includes: the base station determining the state of the terminal, wherein when the terminal enters the active state from the inactive state, the base station sends the TA command if the second time length is greater than the second threshold; when the terminal is always active , if TATimer When the timing duration expires, the base station sends a TA command.
  • sending the TA command for the duration includes: determining whether the duration timer reaches the startup time, wherein the base station sends the TA command when the startup time is reached.
  • a processing apparatus for a terminal to maintain uplink synchronization in a DRX mode is provided.
  • the processing device for maintaining the uplink synchronization in the DRX mode includes: a recording unit, configured to record, by using a first counter in the base station, a first time length in which the terminal does not perform data scheduling; and a processing unit, configured to determine the first time Whether the length is greater than the first threshold, where the base station does not send the timing advance TA command when the first time length is greater than or equal to the first threshold; when the first time length is less than the first threshold, the base station is aligned according to time The timing of the timer TATimer is compared with the result of the discontinuous reception of the DRX cycle to determine the transmit TA command.
  • the processing unit includes: a first processing module, configured to: when the timing duration of the TATimer is greater than the DRX period, the base station sends a TA command in a last duration before the TATimer times out; and the second processing module is configured to use the timing of the TATimer When the duration is equal to the DRX period, the base station sends a TA command in each duration; the third processing module is configured to: when the timing duration of the TATimer is less than the DRX period, the base station records, by using the second counter, the second in the inactive state of the terminal. The length of time, when the second time length is greater than the second threshold, the base station sends a TA command.
  • the first processing module includes: a first determining module, configured to determine whether a timing duration of the TATimer is timed out, and if the timeout period from the timing duration of the TATimer has a length of a DRX period, the duration in the non-timeout period The TA command is sent within the time period, otherwise, the TA command is stopped.
  • the third processing module includes: a second determining module, configured to determine a state of the terminal, where, when the terminal enters an active state from the inactive state, the base station, when the second time length is greater than the second threshold, Send a TA command; when the terminal is always active, if When the timing of the TATimer expires, the base station sends a command.
  • a second determining module configured to determine a state of the terminal, where, when the terminal enters an active state from the inactive state, the base station, when the second time length is greater than the second threshold, Send a TA command; when the terminal is always active, if When the timing of the TATimer expires, the base station sends a command.
  • the device further includes: a third determining module, configured to determine whether the duration timer reaches the startup time, wherein, when the startup time is reached, the base station sends the ⁇ command.
  • the first time length of the terminal is not recorded by the first counter in the base station; the first time length is greater than the first threshold, wherein the first time length is greater than or equal to the first threshold
  • the base station does not send the timing advance command; when the first time length is less than the first threshold, the base station determines to send the TA command according to the comparison result of the timing duration of the time alignment timer TATimer and the period of the discontinuous reception DRX, and solves the problem.
  • the UE when the UE is configured with the DRX, when the TATimer time period is reached, and the TA command needs to be sent, because the UE is not in the active time, the UE cannot receive the TA command, and enters the uplink out-of-synchronization state, thereby achieving When DRX is configured, the UE can flexibly maintain uplink synchronization with the base station, minimize the occurrence of uplink out-of-synchronization, and optimize the utilization of system resources.
  • FIG. 1 is a schematic diagram of the working principle of a DRX according to the related art
  • FIG. 2 is a schematic structural diagram of an evolved base station according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a processing apparatus for a terminal to maintain uplink synchronization in a DRX mode according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a processing method for a terminal to maintain uplink synchronization in a DRX mode according to an embodiment of the present invention
  • FIG. 5 is a schematic illustration of a processing method in accordance with a first preferred embodiment of the present invention.
  • FIG. 6 is a schematic illustration of a processing method in accordance with a second preferred embodiment of the present invention.
  • FIG. 7 is a schematic illustration of a processing method in accordance with a third preferred embodiment of the present invention.
  • FIG. 8 is a detailed flowchart of a processing method for a terminal to maintain uplink synchronization in a DRX mode according to an embodiment of the present invention. detailed description
  • the base station eNodeB may include: a DRX module 1 and a TA module 2, where the DRX module 1 is used to maintain the start and end of the DRX timers and the state transition of the UE, and maintain the UE without scheduling data time counters. And the UE is in the DRX inactivity time counter; the TA module 2 is configured to maintain the TATimer timer, obtain relevant configuration information and UE state information from the DRX module, determine whether a TA command needs to be sent, and perform a TA command transmission.
  • FIG. 3 is a schematic structural diagram of a processing apparatus for a terminal to maintain uplink synchronization in a DRX mode according to an embodiment of the present invention.
  • the apparatus includes: a recording unit 10, configured to record, by using a first counter in a base station, a first time length in which the terminal does not perform data scheduling; and a processing unit 30, configured to determine whether the first time length is greater than a first time length a threshold value, wherein, when the first time length is greater than or equal to the first threshold, the base station does not send the timing advance TA command; when the first time length is less than the first threshold, the base station according to the time alignment timer TATimer The timing of the comparison of the timing duration with the period of discontinuous reception of DRX determines the transmission of the TA command.
  • the foregoing embodiment of the present invention is mainly implemented by the base station adjusting the TA command transmission timing according to the DRX cycle and the state of the UE under the DRX, so that the UE can receive the TA command as much as possible. That is, the base station eNodeB can reasonably send the TA command to the UE when the UE is configured with the DRX, so that the UE can perform uplink timing adjustment, effectively reduce the occurrence of uplink out-of-synchronization of the UE, and optimize the utilization of system resources.
  • the processing unit 30 includes: a first processing module 301, configured to: when the timing duration of the TATimer is greater than the DRX period, the base station sends a TA command in a last duration before the TATimer times out; the second processing module 302 is configured to be a TATimer Timing time When the DRX cycle is equal to the DRX cycle, the base station sends a TA command in each duration; the third processing module 303 is configured to: when the timing duration of the TATimer is less than the DRX cycle, the base station records, by using the second counter, the second terminal in the inactive state. The length of time, when the second time length is greater than the second threshold, the base station sends a TA command.
  • a first processing module 301 configured to: when the timing duration of the TATimer is greater than the DRX period, the base station sends a TA command in a last duration before the TATimer times out
  • the second processing module 302 is configured to be a
  • the technical solution of the foregoing embodiment includes implementing two counters of the first counter and the second counter: the base station side maintains the first counter for characterizing how long the UE has no data scheduling, if the counter is greater than a threshold (for example, timeAlignmentTimer 4 times), the base station side does not actively issue the TA command. Meanwhile, the second counter maintained by the base station side is a counter (SleepTimer) in which the UE is in a DRX inactive time.
  • a threshold for example, timeAlignmentTimer 4 times
  • the second counter maintained by the base station side is a counter (SleepTimer) in which the UE is in a DRX inactive time.
  • the technical solution proposed by the present invention is that when the UE no data scheduling time counter does not exceed the threshold, according to the relationship between the TATimer duration and the DRX cycle duration, the following situations are handled:
  • the base station sends a TA command during the last OnDuration Timer run before the TATimer times out.
  • the base station sends a TA command during each OnDuration Timer run.
  • TATimer is shorter than the DRX cycle time. If the UE enters the active state from the DRX inactive state, and the TATimer does not time out, and the SleepTimer exceeds a threshold (such as 1/2 of the timeAlignmentTimer duration), the TA command is sent. In other cases, the TATimer is normally maintained. At the time of the TATimer timeout, if the UE is in the DRX active state, the base station sends a TA command. Otherwise, the base station does not send the TA command.
  • a threshold such as 1/2 of the timeAlignmentTimer duration
  • the device effectively ensures that the UE can flexibly maintain uplink synchronization with the base station when DRX is configured.
  • the UE can receive the TA command of the base station to minimize the occurrence of uplink out-of-synchronization.
  • the UE traffic is small, the UE does not maintain the uplink synchronization state and optimize system resource utilization.
  • the first processing module 301 in the foregoing embodiment of the present invention may include:
  • the interrupt module is configured to determine whether the timing duration of the TATimer is timed out. If the timeout period from the timing of the TATimer has a length of a DRX cycle, the TA command is sent within the duration of the non-timeout period, otherwise, the sending is stopped. TA command.
  • the third processing module 303 in the foregoing embodiment of the present invention may include: a second determining module, configured to determine, by the base station, a state of the terminal, where the base station is in the second time length when the terminal enters the active state from the inactive state When the second threshold is greater than the second threshold, the TA command is sent; when the terminal is always active, if the timing of the TATimer expires, the base station sends a TA command.
  • the apparatus may further include: a third determining module, configured to determine whether the duration timer reaches a startup time, wherein, when the startup time is reached, the base station sends a TA command.
  • FIG. 4 is a flow chart of a processing method for a terminal to maintain uplink synchronization in a DRX mode according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:
  • Step S402 the first time length in which the terminal does not perform data scheduling is recorded by the first counter in the base station.
  • Step S404 determining whether the first time length is greater than the first threshold, wherein, when the first time length is greater than or equal to the first threshold, the base station does not send the timing advance TA command; when the first time length is less than the first threshold At the time of the value, the base station determines to transmit the TA command based on the comparison between the timing duration of the time alignment timer TATimer and the discontinuous reception DRX cycle.
  • the present invention mainly adjusts the timing of the TA command transmission according to the DRX cycle and the state of the UE under the DRX, so that the UE can receive the TA command as much as possible.
  • the method effectively ensures that the UE can flexibly maintain uplink synchronization with the base station when configuring DRX.
  • the UE When the UE has a certain amount of traffic, it can receive the TA command of the base station to minimize the occurrence of uplink out-of-synchronization.
  • the UE traffic is small, the UE does not maintain the uplink synchronization state. Utilization of system resources.
  • step S404 the base station determines, according to the comparison result of the timing duration of the time alignment timer TATimer and the discontinuous reception DRX cycle, that the sending TA command includes: when the timing duration of the TATimer is greater than the DRX cycle, the base station before the TATimer times out The TA command is sent for the last duration; when the timing duration of the TATimer is equal to the DRX period, the base station transmits the TA command every time duration; when the timing duration of the TATimer is less than the DRX period, the base station records the terminal is non-second by the second counter.
  • the second time length in the active state when the second time length is greater than the second threshold, the base station sends a TA command.
  • FIG. 5 is a schematic diagram of a processing method in accordance with a first preferred embodiment of the present invention. As shown in Figure 5, it can be seen that the TATimer is longer than the DRX cycle. According to the current protocol, whether the terminal monitors the PDCCH is unclear at the timing of the TA command transmission.
  • the present invention sends a TA command after the last onDuration is started in the TATimer period, so that the TA command is guaranteed to arrive at the time when the terminal monitors the PDCCH.
  • FIG. 6 is a schematic diagram of a processing method according to a second preferred embodiment of the present invention.
  • the present invention sends a TA command at the start of each onDuration, thereby ensuring that the TA command arrives at the time when the terminal monitors the PDCCH. Specifically, at time 1, the UE does not have a scheduling data time counter that exceeds the set threshold. This time, the TA command is not sent, and the terminal acquires uplink synchronization by re-accessing.
  • FIG. 7 is a schematic diagram of a processing method according to a third preferred embodiment of the present invention. As shown in FIG. 7, it can be seen that the TATimer is shorter than the DRX cycle. According to the current protocol, at the timing of the TA command transmission, whether the terminal monitors The behavior of the PDCCH is not clear.
  • the present invention can be derived by combining the actual DRX state of the UE.
  • the TA is normally sent according to the TATimer timeout, and then the UE enters the DRX inactive state, again.
  • the TA is immediately transmitted, after which the UE is always in the DRX active state, and the TA is sent according to the TATimer period.
  • the step of the base station transmitting the TA command in the last duration before the TATimer times out includes: determining whether the timing duration of the TATimer times out, if the TATimer is far away from the TATimer The timeout period of the timing duration also has a DRX cycle, and the TA command is sent within the duration of the non-timeout period. Otherwise, the TA command is stopped.
  • the base station when the timing duration of the TATimer is less than the DRX period, the base station records, by using the second counter, a second time length in which the terminal is in an inactive state, where the second time length is greater than the second threshold value.
  • the step of the base station transmitting the TA command may include: the base station determining the state of the terminal, where, when the terminal enters the active state from the inactive state, the base station sends the TA command if the second time length is greater than the second threshold; When the terminal is always active, if the timing duration of the TATimer times out, the base station sends a TA command.
  • the step of transmitting the TA command in the duration of the foregoing embodiment may include: determining whether the duration timer reaches the startup time, wherein the base station sends the TA command when the startup time is reached.
  • the base station scheduler knows the DRX configuration parameters of the terminal, and can calculate the DRX correlation according to the DRX configuration and the uplink and downlink scheduling of the terminal. Timer health, and know if the terminal is in DRX activity time.
  • the scheduler needs to maintain two counters for each UE configured with DRX, that is, the UE has no scheduling data time counter, and the UE is in the DRX inactivity time counter. The UE does not have a scheduling data time counter.
  • the function is as follows: If the UE has no data scheduling for a certain period of time (the timer is exceeded by the set threshold), the UE can be considered to have a small amount of data, and the base station side does not need to maintain the UE uplink synchronization. (This saves system resources), and the UE can synchronize by re-access when necessary.
  • the role of the UE in the DRX inactivity time counter is: When the base station sends the TA command timer to be less than the DRX period, there is no guarantee that the onCommand Timer will run within the timeout period of the TA command timer, that is, the UE cannot be in the DRX. Activity time.
  • the base station judges each time the UE enters the DRX active state. If the UE is in the DRX inactivity time counter is greater than the set threshold, it is considered that the TA command timer is likely to be timed out. You need to issue the TA command at this time.
  • FIG. 8 is a detailed flowchart of a processing method for a terminal to maintain uplink synchronization in a DRX mode according to an embodiment of the present invention. The implementation of the method will be further described in detail with reference to Figure 8:
  • Step S201 Calculate the TATimer timer according to the configured timeAlignmentTimer, compare it with the configured DRX cycle length, and go to the corresponding step according to the result. If the TATimer is longer than the DRX cycle, the process proceeds to step S202. If the TATimer and the DRX cycle are equal, the process proceeds to step S203. If the TATimer is shorter than the DRX cycle time, the process proceeds to step 204 (including step S204a, step S204b, and step S204c).
  • Step S202 Determine the TATimer timeout period. If the distance TATimer expires and there is a time point of the DRX cycle length, the TA command may be sent during the next onDuration operation, and the process proceeds to step 203.
  • Step S203 Determine whether the onDuration timer start time is reached. If yes, go to step S205, otherwise, end the operation.
  • Step S204 determining the UE status, if the UE is in an active state and reaching the TATimer timeout If the UE enters the active state from the inactive state, it is determined whether the DRX inactivity time counter exceeds the set threshold. If yes, step S205 is performed, otherwise the TATimer is normally maintained.
  • Step S205 Determine whether the UE does not schedule the data time counter to exceed the set threshold. If not, send a TA command.
  • the eNodeB can reasonably send the TA command to the UE when the UE is configured with the DRX, so that the UE can perform uplink timing adjustment and effectively reduce the UE. Upward out of step occurs.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into a plurality of integrated circuit modules, or they may be Multiple modules or steps in the fabrication are implemented as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the present invention implements the eNodeB to correctly send the TA command to the UE when the UE is configured with the DRX, so that the UE can perform uplink timing adjustment, thereby effectively reducing the occurrence of uplink out-of-synchronization of the UE.

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Abstract

本发明公开了一种DRX模式下终端保持上行同步的处理方法及装置,本发明通过基站中的第一计数器来记录终端未执行数据调度的第一时间长度;判断第一时间长度是否大于第一门限值,其中,当第一时间长度大于等于第一门限值时,基站不发送定时提前TA命令;当第一时间长度小于第一门限值时,基站根据时间对齐定时器TATimer的定时时长与不连续接收DRX的周期的比较结果来确定发送TA命令,解决了现有技术的当UE被配置了DRX时,在TATimer时间周期到,且需要发送TA命令时,由于UE不处于活动时间,导致UE无法收到TA命令,进入上行失步状态的问题,进而达到了在配置DRX时,UE能够灵活地和基站保持上行同步,且最大限度减少上行失步的发生,优化了系统资源的利用率的效果。

Description

DRX模式下终端保持上行同步的处理方法及装置 技术领域
本发明涉及通信领域, 具体而言, 尤其涉及一种不连续接收 ( Discontinuous Reception, DRX )模式下终端保持上行同步的处理方法及 装置。 背景技术
第三代移动通信长期演进( Long Term Evolution, LTE ) 系统中, 为节 省用户设备(User Equipment, UE, 也称为终端)的电池消耗, 系统配置了 不连续接^ ( Discontinuous Reception, DRX )功能。 DRX可以使 UE在一 定时间内停止监测物理下行控制信道( Physical Downlink Control Channel , PDCCH )。
DRX 周期 (DRX Cycle ) 指持续时间 ( OnDuration ) 与非活动时间 ( Inactive )进行周期性地重复。
持续时间定时器( OnDuration Timer )定义了 DRX周期开始时 UE需要 连续监听 PDCCH的子帧数目。
图 1是根据相关技术的 DRX的工作原理示意图, 如图 1所示, 当配置 了 DRX时, UE的活动时间( Active Time )包括持续时间定时器或 DRX非 活动定时器或 DRX重传定时器或竟争解决定时器运行时的时间;及调度请 求( Scheduling Request, SR )被挂起的时间; 及混合自动重传请求( Hybrid Automatic Repeat reQuest, HARQ )重传分配上行授权可能发生的时间; 及 UE成功接收随机接入响应消息后, 尚未接收到 PDCCH指示有针对 UE的 小区无线网络临时标识( Cell Radio Network Temporary Identifier, C-RNII ) 或临时 C-RNTI的新传输的时间。 配置了 DRX时, UE仅在活动时间监测 C-RNTI , TPC-PUCCH-RNTI, TPC-PUSCH-RNTI 和 Semi-Persistent Scheduling C-RNTI加扰的 PDCCH。
时间对齐定时器( timeAlignmentTimer )是 LTE系统对 UE上行同步状 态进行维护的定时器。上行同步状态的保持是 UE能够同演进基站( eNodeB ) 正常通信的基本条件, UE获得同步后, 可能由于 UE、 eNodeB双方的时钟 偏移或信道情况改变, 又变成失步状态。 在时间对齐定时时长 timeAlignmentTimer配置为无穷大时, 如果通过上行测量发现 TA调整值非 零, 需要下发 TA命令。 时间对齐定时时长 timeAlignmentTimer配置为有限 长度时, 在 timeAlignmentTimer超时时间内, eNodeB必须给 UE发送一个 定时提前命令 MAC控制元素 ( Timing Advance Command MAC control element , TA 命令), 对 UE 的上行定时做一次调整或确认, 如果 timeAlignmentTimer超时时 UE还没有收到 TA命令, UE认为上行失步,在 有上行或下行数据时, UE需要重新随机接入获得同步。
由于基站发送数据到达 UE有一定时延,为确保终端能够在时间对齐定 时器 timeAlignmentTimer超时前收到 TA命令,基站侧维护的时间对齐定时 器 (TATimer)时长为 timeAlignmentTimer减去一个 TA发送提前的时间(例如 30ms), 基站应该在 TATimer超时前发送 TA命令。
针对上述现有技术的当 UE被配置了 DRX时,在 TATimer时间周期到, 且需要发送 TA命令时, 由于 UE不处于活动时间, 导致 UE无法收到 TA 命令, 进入上行失步状态的问题, 目前还没有有效的解决方案。 发明内容
本发明的主要目的在于提供一种 DRX模式下终端保持上行同步的处理 方法及装置, 以解决现有技术的当 UE被配置了 DRX时, 在 TATimer时间 周期到, 且需要发送 TA命令时, 由于 UE不处于活动时间, 导致 UE无法 收到 TA命令, 进入上行失步状态的问题。 为了实现上述目的, 根据本发明的一方面, 提供了一种 DRX模式下终 端保持上行同步的处理方法。
根据本发明的 DRX模式下终端保持上行同步的处理方法包括: 通过基 站中的第一计数器来记录终端未执行数据调度的第一时间长度; 判断第一 时间长度是否大于第一门限值, 其中, 当第一时间长度大于等于第一门限 值时, 基站不发送定时提前 TA命令; 当第一时间长度小于第一门限值时, 基站根据时间对齐定时器 TATimer的定时时长与不连续接收 DRX周期的比 较结果来确定发送 TA命令。
进一步地, 基站根据时间对齐定时器 TATimer的定时时长与不连续接 收 DRX周期的比较结果来确定发送 TA命令包括: 当 TATimer的定时时长 大于 DRX周期时, 基站在 TATimer超时前的最后一个持续时间内发送 TA 命令; 当 TATimer的定时时长等于 DRX周期时, 基站在每一个持续时间内 发送 TA命令; 当 TATimer的定时时长小于 DRX周期时, 基站通过第二计 数器来记录终端处于非活动状态下的第二时间长度, 在第二时间长度大于 第二门限值的情况下, 基站发送 TA命令。
进一步地, 当 TATimer的定时时长大于 DRX周期时, 基站在 TATimer 超时前的最后一个持续时间内发送 TA命令的步驟包括:判断 TATimer的定 时时长是否超时, 如果距离 TATimer的定时时长的超时时间还有一个 DRX 止发送 TA命令。
进一步地, 当 TATimer的定时时长小于 DRX周期时, 基站通过第二计 数器来记录终端处于非活动状态下的第二时间长度, 在第二时间长度大于 第二门限值的情况下,基站发送 TA命令包括:基站判断终端的状态,其中, 当终端从非活动状态进入活动状态时, 基站在第二时间长度大于第二门限 值的情况下, 发送 TA命令; 当终端一直处于活动状态下时, 如果 TATimer 的定时时长超时, 则基站发送 TA命令。
进一步地,持续时间内发送 TA命令包括: 判断持续时间定时器是否到 达启动时间, 其中, 在到达启动时间的情况下, 基站发送 TA命令。
为了实现上述目的, 根据本发明的另一个方面, 提供了一种 DRX模式 下终端保持上行同步的处理装置。
根据本发明的 DRX模式下终端保持上行同步的处理装置包括: 记录单 元, 用于通过基站中的第一计数器来记录终端未执行数据调度的第一时间 长度; 处理单元, 用于判断第一时间长度是否大于第一门限值, 其中, 当 第一时间长度大于等于第一门限值时,基站不发送定时提前 TA命令; 当第 一时间长度小于第一门限值时, 基站根据时间对齐定时器 TATimer的定时 时长与不连续接收 DRX周期的比较结果来确定发送 TA命令。
进一步地, 处理单元包括: 第一处理模块, 用于当 TATimer的定时时 长大于 DRX周期时, 基站在 TATimer超时前的最后一个持续时间内发送 TA命令; 第二处理模块, 用于当 TATimer的定时时长等于 DRX周期时, 基站在每一个持续时间内发送 TA命令; 第三处理模块, 用于当 TATimer 的定时时长小于 DRX周期时,基站通过第二计数器来记录终端处于非活动 状态下的第二时间长度, 在第二时间长度大于第二门限值的情况下, 基站 发送 TA命令。
进一步地, 第一处理模块包括: 第一判断模块, 用于判断 TATimer的 定时时长是否超时, 如果距离 TATimer 的定时时长的超时时间还有一个 DRX周期的长度, 则在未超时时间段中的持续时间段内发送 TA命令, 否 则, 停止发送 TA命令。
进一步地, 第三处理模块包括: 第二判断模块, 用于判断终端的状态, 其中, 当终端从非活动状态进入活动状态时, 基站在第二时间长度大于第 二门限值的情况下, 发送 TA命令; 当终端一直处于活动状态下时, 如果 TATimer的定时时长超时, 则基站发送 ΤΑ命令。
进一步地, 装置还包括: 第三判断模块, 用于判断持续时间定时器是 否到达启动时间, 其中, 在到达启动时间的情况下, 基站发送 ΤΑ命令。
本发明通过基站中的第一计数器来记录终端未执行数据调度的第一时 间长度; 判断第一时间长度是否大于第一门限值, 其中, 当第一时间长度 大于等于第一门限值时,基站不发送定时提前 ΤΑ命令; 当第一时间长度小 于第一门限值时, 基站根据时间对齐定时器 TATimer的定时时长与不连续 接收 DRX的周期的比较结果来确定发送 TA命令,解决了现有技术的当 UE 被配置了 DRX时 , 在 TATimer时间周期到 , 且需要发送 TA命令时 , 由于 UE不处于活动时间, 导致 UE无法收到 TA命令, 进入上行失步状态的问 题, 进而达到了在配置 DRX时, UE能够灵活地和基站保持上行同步, 且 最大限度减少上行失步的发生, 优化了系统资源的利用率的效果。 附图说明
图 1是根据相关技术的 DRX的工作原理示意图;
图 2是根据本发明实施例的在演进基站中的结构示意图;
图 3是根据本发明实施例的 DRX模式下终端保持上行同步的处理装置 的结构示意图;
图 4是根据本发明实施例的 DRX模式下终端保持上行同步的处理方法 的流程图;
图 5是根据本发明第一优选实施例的处理方法示意图;
图 6是根据本发明第二优选实施例的处理方法示意图;
图 7是根据本发明第三优选实施例的处理方法示意图;
图 8是根据本发明实施例的 DRX模式下终端保持上行同步的处理方法 的详细流程图。 具体实施方式
为了使本发明所要解决的技术问题、 技术方案及有益效果更加清楚、 明白, 以下结合附图和实施例, 对本发明进行进一步详细说明。 应当理解, 此处所描述的具体实施例仅仅用以解释本发明, 并不用于限定本发明。
图 2是根据本发明实施例的在演进基站中的结构示意图。 如图 2所示, 该基站 eNodeB中可以包括: DRX模块 1和 TA模块 2, 其中, 该 DRX模 块 1用于维护 DRX各定时器的起止以及 UE的状态变迁, 同时维护 UE没 有调度数据时间计数器和 UE处于 DRX非活动时间计数器; TA模块 2, 用 于维护 TATimer定时器, 从 DRX模块获得相关配置信息和 UE状态信息, 判断是否需要发送 TA命令, 并执行 TA命令发送。
图 3是根据本发明实施例的 DRX模式下终端保持上行同步的处理装置 的结构示意图。 如图 3所示, 该装置包括: 记录单元 10, 用于通过基站中 的第一计数器来记录终端未执行数据调度的第一时间长度; 处理单元 30, 用于判断第一时间长度是否大于第一门限值, 其中, 当第一时间长度大于 等于第一门限值时,基站不发送定时提前 TA命令; 当第一时间长度小于第 一门限值时, 基站根据时间对齐定时器 TATimer的定时时长与不连续接收 DRX的周期的比较结果来确定发送 TA命令。
本发明上述实施例主要实现, 基站对配置 DRX 和时间对齐定时器 timeAlignmentTimer的 UE, 根据 DRX周期以及 DRX下 UE的状态 , 调整 TA命令发送时机, 使 UE能够尽可能地收到 TA命令。 即实现基站 eNodeB 能够在 UE配置了 DRX时, 合理地将 TA命令发送到 UE, 使 UE能够进行 上行定时调整, 有效减少 UE上行失步的发生, 优化了系统资源的利用率 本发明上述实施例中的处理单元 30包括: 第一处理模块 301 , 用于当 TATimer的定时时长大于 DRX周期时, 基站在 TATimer超时前的最后一个 持续时间内发送 TA命令; 第二处理模块 302, 用于当 TATimer的定时时长 等于 DRX周期时, 基站在每一个持续时间内发送 TA命令; 第三处理模块 303 , 用于当 TATimer的定时时长小于 DRX周期时, 基站通过第二计数器 来记录终端处于非活动状态下的第二时间长度, 在第二时间长度大于第二 门限值的情况下, 基站发送 TA命令。
具体地, 上述实施例的技术方案包括实现第一计数器和第二计数器两 个计数器: 基站侧维护第一计数器用于表征 UE多长时间没有数据调度,若 该计数器大于一个门限值 (例如 timeAlignmentTimer的 4倍),基站侧不主动 下发 TA命令。 同时, 基站侧维护的第二计数器是一个 UE处于 DRX非活 动态时间的计数器 (SleepTimer)。 本发明提出的技术方案是, 在 UE无数据 调度时间计数器不超过门限值时,根据 TATimer时长和 DRX周期时长的关 系, 分为以下几种情况处理:
TATimer比 DRX周期长时。 在 TATimer超时前最后一个 OnDuration Timer运行期间 , 基站发送 TA命令。
TATimer和 DRX周期相等时。 在每个 OnDuration Timer运行期间, 基 站发送 TA命令。
TATimer比 DRX周期时间短时。 若 UE从 DRX非活动态进入活动态, 并且此时 TATimer 没有超时, 并且 SleepTimer 超过一个门限值(如 timeAlignmentTimer时长的 1/2)时, 发送 TA命令。 其它情况下, TATimer 正常维护, 在 TATimer超时时刻, 如果 UE处于 DRX活动状态, 基站下发 TA命令, 否则, 基站不发送 TA命令。
该装置有效地保证了在配置 DRX时, UE能够灵活地和基站保持上行 同步。在 UE有一定业务量时,能够接收到基站的 TA命令, 最大限度减少上 行失步的发生; 在 UE业务量很小的情况下, 不保持 UE上行同步状态, 优 化系统资源利用。
优选地, 本发明上述实施例中的第一处理模块 301 可以包括: 第一判 断模块, 用于判断 TATimer的定时时长是否超时, 如果距离 TATimer的定 时时长的超时时间还有一个 DRX周期的长度,则在未超时时间段中的持续 时间段内发送 TA命令, 否则, 停止发送 TA命令。
优选地, 本发明上述实施例中的第三处理模块 303 可以包括: 第二判 断模块, 用于基站判断终端的状态, 其中, 当终端从非活动状态进入活动 状态时, 基站在第二时间长度大于第二门限值的情况下, 发送 TA命令; 当 终端一直处于活动状态下时, 如果 TATimer的定时时长超时, 则基站发送 TA命令。
本发明上述各个实施例中, 该装置还可以包括: 第三判断模块, 用于 判断持续时间定时器是否到达启动时间, 其中, 在到达启动时间的情况下, 基站发送 TA命令。
图 4是根据本发明实施例的 DRX模式下终端保持上行同步的处理方法 的流程图。 如图 4所示, 该方法包括如下步驟:
步驟 S402, 通过基站中的第一计数器来记录终端未执行数据调度的第 一时间长度。
步驟 S404, 判断第一时间长度是否大于第一门限值, 其中, 当第一时 间长度大于等于第一门限值时,基站不发送定时提前 TA命令; 当第一时间 长度小于第一门限值时, 基站根据时间对齐定时器 TATimer的定时时长与 不连续接收 DRX周期的比较结果来确定发送 TA命令。
本发明主要对配置了 DRX和时间对齐定时器 timeAlignmentTimer的 UE, 根据 DRX周期以及 DRX下 UE的状态, 调整 TA命令发送时机, 使 UE能够尽可能地收到 TA命令。
本方法有效地保证了在配置 DRX时, UE能够灵活地和基站保持上行 同步。在 UE有一定业务量时,能够接收到基站的 TA命令, 最大限度减少上 行失步的发生; 在 UE业务量很小的情况下, 不保持 UE上行同步状态, 优 化系统资源利用。
本发明上述实施例中步驟 S404基站根据时间对齐定时器 TATimer的定 时时长与不连续接收 DRX周期的比较结果来确定发送 TA命令包括: 当 TATimer的定时时长大于 DRX周期时, 基站在 TATimer超时前的最后一个 持续时间内发送 TA命令; 当 TATimer的定时时长等于 DRX周期时, 基站 在每一个持续时间内发送 TA命令; 当 TATimer的定时时长小于 DRX周期 时, 基站通过第二计数器来记录终端处于非活动状态下的第二时间长度, 在第二时间长度大于第二门限值的情况下, 基站发送 TA命令。
具体地, 图 5是根据本发明第一优选实施例的处理方法示意图。如图 5 所示, 可以看出 TATimer比 DRX周期长的场景, 根据当前协议, 在 TA命 令发送的时机, 终端是否监测 PDCCH的行为不明确。
在该场景中, 本发明在 TATimer周期内最后一个 onDuration启动后发 送 TA命令, 则保证 TA命令在终端监测 PDCCH的时间到达。
具体地, 图 6是根据本发明第二优选实施例的处理方法示意图, 如图 6 所示, 可以看出 TATimer和 DRX周期相等的场景, 根据当前协议, 在 TA 命令发送的时机, 终端是否监测 PDCCH的行为不明确。
在该场景中, 本发明在每个 onDuration启动时发送 TA命令, 则保证 TA命令在终端监测 PDCCH的时间到达。 特别地, 在时刻 1时, UE没有 调度数据时间计数器超过了设置的门限值, 这次没有发送 TA命令, 终端通 过重新接入获取上行同步。
具体地, 图 7是根据本发明第三优选实施例的处理方法示意图, 如图 7 所示, 可以看出 TATimer比 DRX周期短的场景, 根据当前协议, 在 TA命 令发送的时机, 终端是否监测 PDCCH的行为不明确。
在该场景中,本发明结合 UE实际的 DRX状态可以得出,在时刻 1时, 是按照 TATimer超时正常发送 TA, 之后 UE进入 DRX非活动状态, 再次 进入活动状态时, 判断 UE处于 DRX非活动时间计数器超过门限, 这时立 即发送 TA,之后 UE一直处于 DRX活动状态, TA按照 TATimer周期发送。 时刻 5和 6之间有一次从非活动状态到活动状态的变化, 但由于 UE处于 DRX非活动时间计数器未超过门限, 因此进入活动状态后, 没有立即发送 TA, 还是正常维护 TATimer定时器, 超时时发送 TA。 时刻 7情况同时刻 2 相同, 再次进入活动状态时, 判断 UE处于 DRX非活动时间计数器超过门 限, 这时立即发送 TA。 时刻 8按照 TATimer周期应该发送, 但此时处于 DRX非活动态, 此时无法发送, UE上行失步, 需要通过重新接入获取上 行同步。
本发明上述实施例的步驟中,当 TATimer的定时时长大于 DRX周期时, 基站在 TATimer超时前的最后一个持续时间内发送 TA命令的步驟包括:判 断 TATimer的定时时长是否超时, 如果巨离 TATimer的定时时长的超时时 间还有一个 DRX周期,则在未超时时间段中的持续时间段内发送 TA命令, 否则, 停止发送 TA命令。
在上述实施例的步驟中, 当 TATimer的定时时长小于 DRX周期时, 基 站通过第二计数器来记录终端处于非活动状态下的第二时间长度, 在第二 时间长度大于第二门限值的情况下,基站发送 TA命令的步驟可以包括: 基 站判断终端的状态, 其中, 当终端从非活动状态进入活动状态时, 基站在 第二时间长度大于第二门限值的情况下,发送 TA命令; 当终端一直处于活 动状态下时, 如果 TATimer的定时时长超时, 则基站发送 TA命令。
优选地, 上述实施例中持续时间内发送 TA命令的步驟可以包括: 判断 持续时间定时器是否到达启动时间, 其中, 在到达启动时间的情况下, 基 站发送 TA命令。
根据上述实施例可知, 在实现过程中, 基站调度器知晓终端的 DRX配 置参数, 能够根据 DRX配置以及终端上下行调度情况, 计算出 DRX相关 定时器运行状况, 以及获知终端是否处于 DRX活动时间。 调度器需要对每 个配置了 DRX的 UE维护两个计数器, 分别为 UE没有调度数据时间计数 器、 UE处于 DRX非活动时间计数器。 UE没有调度数据时间计数器作用在 于: 若 UE在相当一段时间内没有数据调度 (以该定时器超过设定门限值为 判断依据), 则可以认为 UE数据量小, 基站侧无需维护 UE上行同步 (这样 可以节省系统资源), 在必要时 UE可通过重新接入方式获得同步。 UE处于 DRX 非活动时间计数器作用在于: 当基站发送 TA命令定时器时长小于 DRX 周期时, 不能保证 TA 命令定时器超时时间内, 会有一个 onDurationTimer运行的机会 , 也即不能保证 UE能够处在 DRX活动时间。 为使 TA命令有机会发送,基站在 UE每次进入 DRX活动状态时进行判断, 如果 UE处于 DRX非活动时间计数器大于设定门限值, 则认为 TA命令定 时器快要超时的可能性比较大, 需要在此时下发 TA命令。
图 8是根据本发明实施例的 DRX模式下终端保持上行同步的处理方法 的详细流程图。 结合附图 8对本方法的实施作进一步的详细描述:
步驟 S201 , 根据配置的 timeAlignmentTimer计算 TATimer定时器, 并 和配置的 DRX周期长度进行比较, 根据结果不同转到相应步驟执行。 若 TATimer比 DRX周期长, 进入步驟 S202, 若 TATimer和 DRX周期相等, 进入步驟 S203, 若 TATimer比 DRX周期时间短, 进入步驟 204 (包括步驟 S204a、 步驟 S204b、 步驟 S204c )。
步驟 S202 , 判断 TATimer超时时间, 若到达距离 TATimer超时还有一 个 DRX周期长度的时间点,则在下次 onDuration运行时可以发送 TA命令, 进入执行步驟 203。
步驟 S203, 判断是否到达 onDuration定时器启动时间, 若到达, 执行 步驟 S205, 否则, 结束本操作。
步驟 S204 , 判断 UE状态, 若 UE处于活动态且到达 TATimer超时时 间, 执行步驟 S205; 若 UE从非活动态进入活动态, 判断 DRX非活动时间 计数器是否超过设置的门限值, 如果超过, 执行步驟 S205 , 否则正常维护 TATimer。
步驟 S205 ,判断 UE没有调度数据时间计数器是否超过设置的门限值, 如果不超过, 发送 TA命令。
需要说明的是, 本发明实施例在附图的流程图示出的步驟可以在诸如 一组计算机可执行指令的计算机系统中执行, 并且, 虽然在流程图中示出 了逻辑顺序, 但是在某些情况下, 可以以不同于此处的顺序执行所示出或 描述的步驟。
从以上的实施例描述中, 可以看出, 本发明实现了如下技术效果: 实 现 eNodeB能够在 UE配置了 DRX时, 合理地将 TA命令发送到 UE, 使 UE能够进行上行定时调整, 有效减少 UE上行失步的发生。
显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步驟 可以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者 分布在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执 行的程序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来 执行, 或者将它们分别制作成多个集成电路模块, 或者将它们中的多个模 块或步驟制作成单个集成电路模块来实现。 这样, 本发明不限制于任何特 定的硬件和软件结合。
上述说明示出并描述了本发明的一个优选实施例, 但如前所述, 应当 理解本发明并非局限于本文所披露的形式, 不应看作是对其他实施例的排 除, 而可用于各种其他组合、 修改和环境, 并能够在本文所述发明构想范 围内, 通过上述教导或相关领域的技术或知识进行改动。 而本领域人员所 进行的改动和变化不脱离本发明的精神和范围, 则都应在本发明所附权利 要求的保护范围内。 工业实用性
本发明实现了 eNodeB在 UE配置了 DRX时, 合理地将 TA命令发送 到 UE, 使 UE能够进行上行定时调整, 有效减少 UE上行失步的发生。

Claims

权利要求书
1、 一种 DRX模式下终端保持上行同步的处理方法, 该方法包括: 通过基站中的第一计数器来记录终端未执行数据调度的第一时间长 度;
判断所述第一时间长度是否大于第一门限值, 其中,
当所述第一时间长度大于等于所述第一门限值时 , 所述基站不发送定 时提前 TA命令;
当所述第一时间长度小于所述第一门限值时, 所述基站根据时间对齐 定时器 TATimer的定时时长与不连续接收 DRX周期的比较结果来确定发送 所述 TA命令。
2、 根据权利要求 1所述的方法, 其中, 所述基站根据时间对齐定时器 TATimer 的定时时长与不连续接收 DRX 周期的比较结果来确定发送所述 TA命令包括:
当所述 TATimer的定时时长大于所述 DRX周期时, 所述基站在所述 TATimer超时前的最后一个持续时间内发送所述 TA命令;
当所述 TATimer的定时时长等于所述 DRX周期时,所述基站在每一个 所述持续时间内发送所述 TA命令;
当所述 TATimer的定时时长小于所述 DRX周期时,所述基站通过第二 计数器来记录所述终端处于非活动状态下的第二时间长度, 在所述第二时 间长度大于第二门限值的情况下, 所述基站发送所述 TA命令。
3、 根据权利要求 2所述的方法, 其中, 当所述 TATimer的定时时长大 于所述 DRX周期时,所述基站在所述 TATimer超时前的最后一个持续时间 内发送所述 TA命令的步驟包括:
判断所述 TATimer的定时时长是否超时, 如果距离所述 TATimer的定 时时长的超时时间还有一个所述 DRX周期, 则在未超时时间段中的所述持 续时间段内发送所述 TA命令, 否则, 停止发送所述 TA命令。
4、 根据权利要求 2所述的方法, 其中, 当所述 TATimer的定时时长小 于所述 DRX周期时, 所述基站通过第二计数器来记录所述终端处于非活动 状态下的第二时间长度, 在所述第二时间长度大于第二门限值的情况下, 所述基站发送所述 TA命令包括:
所述基站判断所述终端的状态, 其中,
当所述终端从非活动状态进入活动状态时, 所述基站在所述第二时间 长度大于所述第二门限值的情况下, 发送所述 TA命令;
当所述终端一直处于所述活动状态下时, 如果所述 TATimer的定时时 长超时, 则所述基站发送所述 TA命令。
5、 根据权利要求 2-4中任一项所述的方法, 其中, 所述持续时间内发 送所述 TA命令包括:
判断所述持续时间定时器是否到达启动时间, 其中,
在到达启动时间的情况下, 所述基站发送所述 TA命令。
6、 一种 DRX模式下终端保持上行同步的处理装置, 其中, 包括: 记录单元, 用于通过基站中的第一计数器来记录终端未执行数据调度 的第一时间长度;
处理单元, 用于判断所述第一时间长度是否大于第一门限值, 其中, 当所述第一时间长度大于等于所述第一门限值时 , 所述基站不发送定时提 前 TA命令; 当所述第一时间长度小于所述第一门限值时, 所述基站根据时 间对齐定时器 TATimer的定时时长与不连续接收 DRX周期的比较结果来确 定发送所述 TA命令。
7、 根据权利要求 6所述的装置, 其中, 所述处理单元包括:
第一处理模块,用于当所述 TATimer的定时时长大于所述 DRX周期时, 所述基站在所述 TATimer超时前的最后一个持续时间内发送所述 TA命令; 第二处理模块,用于当所述 TATimer的定时时长等于所述 DRX周期时, 所述基站在每一个所述持续时间内发送所述 TA命令;
第三处理模块,用于当所述 TATimer的定时时长小于所述 DRX周期时, 所述基站通过第二计数器来记录所述终端处于非活动状态下的第二时间长 度, 在所述第二时间长度大于第二门限值的情况下, 所述基站发送所述 TA 命令。
8、 根据权利要求 7所述的装置, 其中, 所述第一处理模块包括: 第一判断模块, 用于判断所述 TATimer的定时时长是否超时, 如果距 离所述 TATimer的定时时长的超时时间还有一个所述 DRX周期,则在未超 时时间段中的所述持续时间段内发送所述 TA命令, 否则, 停止发送所述 TA命令。
9、 根据权利要求 7所述的装置, 其中, 所述第三处理模块包括: 第二判断模块, 用于判断所述终端的状态, 其中, 当所述终端从非活 动状态进入所述活动状态时, 所述基站在所述第二时间长度大于所述第二 门限值的情况下,发送所述 TA命令; 当所述终端一直处于所述活动状态下 时, 如果所述 TATimer的定时时长超时, 则所述基站发送所述 TA命令。
10、 根据权利要求 7-9中任一项所述的装置, 其中, 所述装置还包括: 第三判断模块, 用于判断所述持续时间定时器是否到达启动时间, 其 中, 在到达启动时间的情况下, 所述基站发送所述 TA命令。
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