WO2012116605A1 - 一种延迟调度方法及系统 - Google Patents

一种延迟调度方法及系统 Download PDF

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Publication number
WO2012116605A1
WO2012116605A1 PCT/CN2012/071345 CN2012071345W WO2012116605A1 WO 2012116605 A1 WO2012116605 A1 WO 2012116605A1 CN 2012071345 W CN2012071345 W CN 2012071345W WO 2012116605 A1 WO2012116605 A1 WO 2012116605A1
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WIPO (PCT)
Prior art keywords
scheduling
terminal
delay
delay scheduling
information
Prior art date
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PCT/CN2012/071345
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English (en)
French (fr)
Inventor
邓云
戴谦
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US14/002,737 priority Critical patent/US9609662B2/en
Priority to EP12752469.2A priority patent/EP2672757B1/en
Publication of WO2012116605A1 publication Critical patent/WO2012116605A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/02Access restriction performed under specific conditions
    • H04W48/06Access restriction performed under specific conditions based on traffic conditions

Definitions

  • the present invention relates to overload processing techniques in mobile communications, and more particularly to a delay scheduling method and system. Background technique
  • H2H Human to Human
  • M2M machine-to-machine
  • M2M communication technology is an information solution based on intelligent machine terminals and multiple communication methods for accessing and providing customers with information technology to meet customer requirements for monitoring, command and dispatch, data collection and measurement.
  • M2M communication technology satisfies people's needs very well. Through M2M communication technology, people can monitor the external environment in real time. Wide range, automated information collection. Therefore, the application of M2M communication technology includes industrial applications, home applications, personal applications, etc. Among them, industry applications include traffic monitoring, alarm systems, maritime assistance, vending machines, car payment, etc. Home applications include automatic meter reading, temperature control, etc. Personal applications include life detection, remote diagnosis, and more.
  • the objects of M2M communication are machine-to-machine, human-to-machine, and data communication between machines.
  • MTC machine type communication
  • PLMN Public Land Mobile-communication Network
  • the existing communication system can be optimized according to its characteristics to meet the requirements of the MTC application, and does not affect the user equipment (UE, User Equipment) in the existing network.
  • UE User Equipment
  • MTC devices are numerous, the amount of data transmitted each time is small, the transmission interval is large, and some MTC devices are relatively fixed in position. According to statistics, there will be 3,000 MTC devices installed in a certain urban area. If so many MTC devices initiate random access, such as fires, earthquakes, etc., they will bring alarms to the network. Great impact.
  • MME Mobility Management Entity
  • the dedicated resources include a Physical Downlink Control Channel (PDCCH) resource and a Physical Uplink Control Channel (PUCCH, Physical Uplink Control Channel).
  • PDCCH Physical Downlink Control Channel
  • PUCCH Physical Uplink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • the base station releases the radio resource control (RRC) connection of some terminals and the radio resources, so as to reduce the load of the MME.
  • RRC radio resource control
  • the main purpose of the present invention is to provide a delay scheduling method and system, which can reduce the load on the network side, and can avoid the wireless resources and increase the network side processing load due to the need to re-access the network after the terminal is released.
  • the present invention provides a delay scheduling method, the method comprising:
  • the base station sends, to the terminal, delay scheduling information for delay scheduling of the terminal; the terminal receives the delay scheduling information, stops monitoring the PDCCH according to the received delay scheduling information, and enters a delayed scheduling state; Delay the scheduling information, restart monitoring the PDCCH, and stop its own delayed scheduling state.
  • the base station sends, to the terminal, delay scheduling information for performing delay scheduling on the terminal, including: the base station adopts RRC signaling, or medium access layer control (MAC) signaling, or a PDCCH signal. Let the delay scheduling information be sent to the terminal.
  • RRC Radio Resource Control
  • MAC medium access layer control
  • the method further includes: the terminal stops sending the scheduling request, or stops sending the physical uplink control channel (PUCCH) signaling, or stops in the physical Transmit data on the downlink shared channel (PUSCH) or stop transmitting the sounding reference signal (SRS).
  • the terminal stops sending the scheduling request or stops sending the physical uplink control channel (PUCCH) signaling, or stops in the physical Transmit data on the downlink shared channel (PUSCH) or stop transmitting the sounding reference signal (SRS).
  • PUCCH physical uplink control channel
  • PUSCH physical Transmit data on the downlink shared channel
  • SRS sounding reference signal
  • the method further includes: the terminal saves communication context information, and/or data access bearer information, and/or the base station is itself The assigned wireless network temporary identity, and/or its own current transmission status information, and/or its own current wireless link control layer transmission status information.
  • the method further includes: when the service request is initiated, the terminal stops the delayed scheduling state and initiates the service request when the priority of the service to be initiated is higher than a preset priority threshold.
  • the base station sends, to the terminal, delay scheduling information for delay scheduling of the terminal, where: the base station after verifying that the service established by the terminal is a service that allows time delay or a low priority service Sending the delay scheduling information to the terminal.
  • the delay scheduling information includes: a delayed scheduling start time for indicating that the terminal enters a delayed scheduling state, and a delayed scheduling termination time for instructing the terminal to stop the self-delayed scheduling state; or
  • the delay scheduling information includes the delay scheduling start time, and a delay scheduling duration for indicating that the terminal maintains its own delay scheduling state duration; or, the delay scheduling information includes a delay scheduling termination time, or a delayed scheduling duration.
  • the present invention also provides a delay scheduling system, the system comprising: a base station and a terminal; wherein, information;
  • a terminal configured to receive delay scheduling information sent by the base station, stop monitoring the PDCCH according to the received delay scheduling information, enter a delayed scheduling state, and restart monitoring the PDCCH according to the delayed scheduling information, and stop the delay scheduling of the PDCCH. status.
  • the terminal is a machine type communication (MTC) device and/or a person-to-person communication (H2H) device.
  • MTC machine type communication
  • H2H person-to-person communication
  • the terminal is further configured to stop sending the scheduling request, stop sending PUCCH signaling, or stop transmitting data on the PUSCH, or stop transmitting the SRS after entering the delayed scheduling state.
  • the terminal is further configured to: after entering the delayed scheduling state, save the communication context information, and/or the data access bearer information, and/or the wireless network allocated by the base station to itself The temporary identification, and/or its own current transmission status information, and/or its own current transmission status information of the radio link control layer.
  • the terminal is further configured to start the service request, and when the priority of the service to be initiated is higher than a preset priority threshold, stop the delayed scheduling state and initiate the service request.
  • the base station is further configured to send the delayed scheduling information to the terminal after verifying that the service established by the terminal is a service that allows time delay or a low priority service.
  • the base station is further configured to send the delay scheduling information to the terminal by using RRC signaling, or MAC signaling, or PDCCH signaling.
  • the delay scheduling method and system of the present invention when the base station is overloaded on the network side, transmits delay scheduling information to the terminal, thereby implementing delay scheduling for some terminals, thereby reducing the load on the network side and improving the overload processing capability of the network. Moreover, after the delay scheduling time, the terminal can restart monitoring the PDCCH, re-run the service, and does not need to re-access the network, thereby avoiding re-accessing the network and consuming a large amount of radio resources, thereby effectively saving radio resources and reducing the network side. Processing load.
  • FIG. 1 is a schematic flowchart of an implementation process of a delay scheduling method according to the present invention
  • FIG. 2 is a schematic flowchart of an implementation process of a delay scheduling process according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic flowchart of an implementation process of a delay scheduling process according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic flowchart of an implementation process of a delay scheduling process according to Embodiment 3 of the present invention. detailed description
  • the basic idea of the present invention is: when the network side is overloaded, the network side delays scheduling the terminal, so that the terminal suspends the carried service during the delayed scheduling time, thereby reducing the network side. After the preset delay scheduling time expires, the terminal performs the service again, and does not need to re-access the network, thereby avoiding resource consumption and increasing network side load.
  • the delay scheduling method of the present invention mainly includes the following steps: Step 101: The base station sends a delay scheduling signal for delay scheduling to the terminal to the terminal. Step 102: The terminal receives the delayed scheduling information And stopping monitoring the PDCCH according to the received delay scheduling information, and entering a delayed scheduling state; and restarting monitoring the PDCCH according to the delayed scheduling information, and stopping the delayed scheduling state thereof.
  • the delay scheduling method of the present invention can reduce the network side load when the network side is overloaded, and the network side overload can include the wireless access network overload, and/or the core network overload.
  • the base station may send the delayed scheduling information to the terminal by using RRC signaling, or Medium Access Control (MAC) signaling, or PDCCH signaling.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • the terminal after the terminal stops monitoring the PDCCH and enters the delayed scheduling state, the terminal also stops sending a scheduling request (Scheduling Request), or stops transmitting PUCCH signaling, or stops transmitting data on the PUSCH, or stops transmitting the sounding reference signal. (SRS, Sounding Reference Signal).
  • the stopping the sending of the PUCCH signaling by the terminal may include stopping the sending of the indication information for assisting the base station to perform a scheduling decision on the terminal.
  • the PUCCH signaling that stops transmitting may include a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), or a Rank Indicator (RI).
  • CQI Channel Quality Indicator
  • PMI Precoding Matrix Indicator
  • RI Rank Indicator
  • the terminal after the terminal stops monitoring the PDCCH and enters the delayed scheduling state, the terminal further saves communication context information (Context), and/or data access bearer information, and/or the wireless network temporary allocated by the base station for itself. Identification, and/or current transmission status information of the self, and/or transmission status information of the current radio link control layer of the self.
  • the terminal stops monitoring the PDCCH and enters the delayed scheduling state when the new service request needs to be initiated, the terminal stops its own delay when the priority of the new service to be initiated is higher than the preset priority threshold. The scheduling status initiates the new service request.
  • the base station sends, to the terminal, delay scheduling information for delay scheduling of the terminal, where the base station can verify that the established service of the terminal is a Delay Tolerant service, or a low priority After the service, the delay scheduling information is sent to the terminal.
  • the delay scheduling information includes: a delayed scheduling start time used to indicate that the terminal enters a delayed scheduling state, and is used to instruct the terminal to stop its own delayed scheduling. a delay scheduling termination time of the state; or, the delay scheduling information includes the delay scheduling start time, and a delay scheduling duration for indicating that the terminal maintains its own delay scheduling state duration; or, the delay scheduling information includes a delay The scheduling termination time, or the delay scheduling time.
  • the present invention further provides a delay scheduling system, the system comprising: a base station and delay scheduling information; a terminal, configured to receive delay scheduling information sent by the base station; and stop listening according to the received delay scheduling information
  • the PDCCH enters a delayed scheduling state; and restarts monitoring the PDCCH according to the delayed scheduling information, and stops its own delayed scheduling state.
  • the terminal may specifically be an MTC device, and/or an H2H device.
  • the terminal may be further configured to stop sending a scheduling request, or stop transmitting PUCCH signaling, or stop transmitting data on the PUSCH, or stop sending after entering the delayed scheduling state.
  • the terminal may be further configured to: after entering the delayed scheduling state, save the communication context information, and/or the data access bearer information, and/or the wireless network temporary identifier allocated by the base station for itself, and/or the current current Transmission status information, and/or transmission status information of its current radio link control layer.
  • the terminal may be further configured to: when a new service request needs to be initiated, stop the delayed scheduling state of the new service when the priority of the new service to be initiated is higher than a preset priority threshold, and initiate the new service request. .
  • the base station may be further configured to send the delay scheduling information to the terminal after verifying that the service established by the terminal is a service that allows time delay or a low priority service.
  • the base station may send the delay scheduling information to the terminal by using RRC signaling, or MAC signaling, or PDCCH signaling.
  • the MTC device is taken as an example.
  • LTE Long-Term Evolution
  • the MTC device accesses the network through the base station 1 and is in a connected state.
  • the MTC device random access procedure has been completed, the encryption process is completed, establishing a data bearer for data transmission access (DRB, Data Radio Bearer) 0 is the MTC business, such as sending data to the MTC server.
  • DRB Data Radio Bearer
  • the network side is overloaded.
  • the core network element such as the MME may be overloaded, or the base station 1 may be overloaded.
  • the base station 1 needs to lower the current load to ensure that the current network is in a normal state.
  • the base station 1 may adopt the following delay scheduling method to reduce the load on the network side. As shown in FIG. 2, the specific process is as follows:
  • Step 201 The base station 1 sends, to the MTC device, RRC signaling carrying delay scheduling information; a termination time.
  • time information is represented by a system frame number (SFN) and a subframe number (subframe number), where SFN is cycled from 0 to 1023, and each SFN represents 10 milliseconds; each SFN is composed of 10 subframes. Each subframe represents 1 millisecond and the subframe number is from 0 to 9.
  • the delay scheduling information sent by the base station 1 to the MTC device the scheduling is delayed.
  • the start time may specifically include a system frame number and a subframe number of the delay scheduling start
  • the termination time of the delay scheduling may specifically include a system frame number and a subframe number of the delay scheduling termination.
  • the subframe number 0
  • subframe number 3.
  • Step 202 The MTC device receives the RRC signaling sent by the base station 1, extracts the delay scheduling information from the RRC signaling, and delays the scheduling start time or the delay scheduling start time in the delay scheduling information. After the subframe is stopped listening to the PDCCH and the PDCCH is stopped, the MTC device stops its current ongoing service.
  • the scheduling start time is stopped to monitor the PDCCH, and the PDCCH is stopped in the next subframe at the start of the delay scheduling, and may be pre-determined by the protocol.
  • the MTC device stops transmitting the scheduling request, or stops transmitting PUCCH signaling, or stops transmitting data on the PUSCH, or stops transmitting the SRS, avoiding occupying the radio resources of the air interface and increasing the load on the network side.
  • the MTC device may save communication context information, and/or data access bearer information, and/or a Radio Network Temporary Identifier (RNTI) allocated by the base station 1 for itself, And/or other dedicated radio resource configuration information (RadioResourceConfigDedicated).
  • RNTI Radio Network Temporary Identifier
  • RadioResourceConfigDedicated dedicated radio resource configuration information
  • the communication context information may include an encryption algorithm, an integrity protection algorithm, and the like used by the MTC device.
  • the MTC device may also save its current transmission status information, and/or radio link control (RLC, Radio Link Control) layer transmission. Transmitting status information, wherein the transmission status information may include a transmitted packet data convergence protocol
  • the transmission status information of the RLC layer may include the transmitted RLC layer sequence number and the untransmitted RLC layer sequence number.
  • Step 203 The MTC device delays the monitoring of the PDCCH in the next subframe of the scheduling termination time or the scheduling termination time in the delay reduction information, so that the MTC device can continue to communicate with the network side, and can continue to perform services.
  • the monitoring of the PDCCH is resumed at the delay scheduling termination time, or the PDCCH is restarted in the next subframe at the delay scheduling termination time, which may be pre-agreed by the protocol.
  • the MTC device allows itself to send a scheduling request, and allows itself to transmit control information carried on the PUCCH and data carried on the PUSCH.
  • the delay scheduling method is adopted, so that the MTC device does not transmit its own non-access stratum signaling and data to the core network for a period of time, thereby effectively reducing the load of the air interface and the load on the core network side;
  • the H2H device is taken as an example.
  • the H2H device accesses the network through the base station 1 and is in a connected state.
  • the H2H device has completed random access.
  • the H2H device is conducting business, including sending data and receiving data.
  • the base station 2 needs to reduce the current network side load to ensure that the network can be in a normal state.
  • the base station 2 can adopt the following delay scheduling method to reduce the load on the network side. As shown in FIG. 3, the specific process is as follows:
  • Step 301 The base station 2 sends the MAC signaling carrying the delay scheduling information to the H2H device.
  • the delayed scheduling start time information may specifically include the SFN and the subframe number of the delayed scheduling start.
  • the delay scheduling duration can be a length of time, such as 20 seconds, or a number of subframes, such as 5 subframes.
  • Step 302 The H2H device receives the MAC signaling sent by the base station 2, extracts the delay scheduling information from the MAC signaling, and delays the scheduling start time or the delayed scheduling start time in the delayed scheduling information. After the subframe is stopped, the PDCCH is stopped, and after the PDCCH is stopped, the H2H device stops its current service.
  • the H2H device saves the communication context information, so that the original configuration can be adopted when communicating with the network side again.
  • the H2H device stops transmitting the scheduling request, stops transmitting PUCCH signaling, or stops transmitting data on the PUSCH, thereby avoiding occupying the radio resources of the air interface again and increasing the network side load.
  • Step 303 After the delay scheduling duration in the delay scheduling information, the H2H device starts The PDCCH is initially monitored, so that the H2H device can continue to communicate with the network side and can continue to conduct services.
  • the H2H device restarts to monitor the PDCCH after stopping the monitoring of the PDCCH for 20 seconds.
  • the method further includes: the base station 2 determining, by the base station 2, whether the service established by the H2H device is a service that allows time delay, and if yes, sending, to the H2H device, MAC signaling that carries delayed scheduling information, where The H2H device is scheduled to be delayed; if not, the base station 2 does not send the delay scheduling information to the H2H device, and does not delay scheduling the H2H device.
  • the base station 2 can learn whether the service that the H2H device has established is a service that allows time delay from the cause value of the H2H device initiating the RRC connection.
  • the scheduling delay method further includes: if the H2H device needs to initiate a new service request, and the new service priority to be initiated is higher than a preset priority threshold, when the H2H device stops monitoring the PDCCH, Then, the H2H device terminates its own delay scheduling state, sends a scheduling request or a service request to the base station 2, and restarts monitoring the PDCCH, so as to establish a new data access bearer for data transmission of a normal priority or high priority service in time.
  • the priority threshold may be configured in advance in the H2H device and the base station 2, or the base station 2 may notify the H2H device before or at the same time as transmitting the delay scheduling information to the H2H device.
  • the H2H device terminates its own delay scheduling state and sends a scheduling request to the base station 2
  • the H2H device does not have an available uplink grant (UL Grant) for transmitting the new scheduling request or service request, and the H2H device sends the scheduling request to the base station 2.
  • UL Grant available uplink grant
  • a random access is initiated, an uplink grant is obtained, and the new scheduling request or service request is sent to the base station 2 by using the obtained uplink grant.
  • the base station 3 in an overload state selects the MTC device to implement delay scheduling, Reduce the current load, the specific process is as follows:
  • Step 401 The base station 3 sends the delay scheduling information to the MTC device by using the PDCCH signaling.
  • the MTC device determines, by the base station 3, its own PDCCH signaling for the RNTI allocated by itself.
  • the delay scheduling information does not need to include the start time of the delay scheduling. It may contain only the termination time of the delay schedule, or the length of the delay schedule.
  • the delay scheduling information does not include the start time of the delay scheduling
  • the starting time of the default delay scheduling is the subframe when the MTC device receives the PDCCH signaling.
  • Step 402 After receiving the PDCCH signaling in the current subframe, the MTC device extracts the delay scheduling information from the PDCCH signaling, and stops monitoring the PDCCH from the next subframe of the current subframe.
  • the MTC device stops monitoring the PDCCH, the MTC device saves the communication context information (Context) so that the original configuration can be used when communicating with the network side again.
  • the MTC device stops transmitting the scheduling request (Scheduling Request), stops transmitting the PUCCH signaling, stops transmitting data on the PUSCH, and stops transmitting the SRS, thereby avoiding occupying the radio resources of the air interface again and increasing the load on the network side.
  • Step 403 The MTC device restarts to monitor the PDCCH when the monitoring PDCCH duration is equal to the delay scheduling duration or the next subframe in the delay scheduling termination time.
  • the step 403 is similar to the specific implementation process of the step 203 in the first embodiment and the step 303 in the second embodiment, and details are not described herein again. It should be noted that this embodiment is also applicable to the H2H device.
  • the delay scheduling method and system of the present invention when the base station is overloaded on the network side, delays scheduling of some terminals by transmitting delay scheduling information to the terminal, which can reduce the load on the network side and improve the overload processing capability of the network; Moreover, after the time of the delay scheduling, the terminal can restart monitoring the PDCCH, perform the service again, and do not need to re-access the network, thereby avoiding re-accessing the network and consuming a large amount of radio resources, effectively saving radio resources, and reducing the processing load on the network side.

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Abstract

本发明公开了一种延迟调度方法,所述方法包括:基站向终端发送用于对所述终端进行延迟调度的延迟调度信息;所述终端接收所述延迟调度信息,根据所接收到的延迟调度信息,停止监听PDCCH,进入延迟调度状态;以及根据所述延迟调度信息,重新开始监听PDCCH,停止自身的延迟调度状态。本发明还公开了一种延迟调度系统,不仅提升了网络的过载处理能力;而且避免了再次接入网络而耗费大量的无线资源,能够有效节省无线资源,减轻网络侧处理负荷。

Description

一种延迟调度方法及系统 技术领域
本发明涉及移动通信中的过载处理技术, 尤其涉及一种延迟调度方法 及系统。 背景技术
人与人之间的通信(H2H, Human to Human )是人通过对设备的操作 进行通信, 现有无线通信技术是基于 H2H的通信发展起来的。 而机器对机 器( M2M, Machine to Machine )通信狭义上的定义是机器与机器之间的通 信, 广义上的定义是以机器终端智能交互为核心的、 网络化的应用与服务。 M2M通信技术是基于智能机器终端、 以多种通信方式为接入手段、 为客户 提供的信息化解决方案, 用于满足客户对监控、 指挥调度、 数据采集和测 量等方面的信息化需求。
无线技术的发展是 M2M市场发展的重要因素,它突破了传统通信方式 的时空限制和地域障碍, 使企业和公众摆脱了线缆束缚, 让客户更有效地 控制成本、 降低了安装费用并且使用简单方便。 另外, 日益增长的需求推 动着 M2M不断向前发展。然而与信息处理能力及网络带宽不断增长相矛盾 的是, 信息获取的手段远远落后, M2M通信技术很好的满足了人们的这一 需求, 通过 M2M通信技术, 人们可以实时监测外部环境, 实现大范围、 自 动化的信息采集。 因此, M2M通信技术的应用包括行业应用、 家庭应用、 个人应用等, 其中, 行业应用包括交通监控、 告警系统、 海上 援、 自动 售货机、 开车付费等, 家庭应用包括自动抄表、 温度控制等, 个人应用包 括生命检测、 远端诊断等。
M2M通信的对象为机器对机器、 人对机器, 机器之间的数据通信定义 为机器类通信(MTC, Machine Type Communication ), 这种情况下较少需 要人机互动。参与 MTC的机器称为 MTC设备或 MTC终端( MTC Device )。 MTC 设备可以通过公众陆地移动通信网络 ( PLMN , Public Land Mobile-communication Network )与其他 MTC设备或 MTC服务器进行通信。
?!入 MTC应用后, 可以根据其特点对现有的通信系统进行一些优化, 以满足 MTC应用需求, 并且不对现有网络中的普通用户终端 (UE, User Equipment )产生影响。 M2M应用的一些显著特点有: MTC设备数量很多, 每次传输的数据量小,传输间隔大,部分 MTC设备位置相对固定。据统计, 在某市区一个小区范围内安装的 MTC设备将达到 3000个, 这么多的 MTC 设备如果比较集中的发起随机接入, 比如在火灾、 地震等情况下同时报警, 将给网络带来很大的沖击。 通常, 多个基站会连接到同一个核心网网元如 移动性管理实体(MME, Mobility Management Entity ), 当所有基站内的众 多 MTC设备均需要接入网络时, 例如断电后恢复供电时所有的 MTC设备 需要重新注册到网络中,核心网网元如 MME将承受巨大的信令沖击,甚至 可能导致过载。
众多的 MTC设备接入网络时, 将占用大量的随机接入资源和专用资 源, 其中专用资源包括物理下行控制信道(PDCCH, Physical Downlink Control Channel )资源、物理上行控制信道( PUCCH, Physical Uplink Control Channel ) 资源、 物理下行共享信道(PDSCH, Physical Downlink Shared Channel ) 资源等, 这可能导致随机接入资源和专用资源出现过载, 进而影 响到普通的 H2H设备的业务应用。 因此, 基站需要基于自身的负载状态动 态的调整接入控制参数, 拒绝或释放一部分终端, 以便合理的控制负载。
如果终端已经接入网络, 并且业务正在进行中, 此时如果网络侧发生 过载, 基站会释放部分终端的无线资源控制 (RRC )连接、 以及无线资源, 以便减少 MME的负荷。之后, 如果被释放的终端需要再次开展业务, 则终 端需要重新建立 RRC连接, 重新发起随机接入, 重新进行加密流程, 重新 建立业务承载, 而这些流程将会耗费较多的无线资源、 占用多条空口信令, 不仅增加基站的处理负荷, 也会增加 MME的处理负荷。 发明内容
有鉴于此, 本发明的主要目的在于提供一种延迟调度方法及系统, 在 降低网络侧负载的同时, 能够避免终端被释放后因需要重新接入网络而耗 费无线资源和增加网络侧处理负荷。
为达到上述目的, 本发明的技术方案是这样实现的:
本发明提供了一种延迟调度方法, 所述方法包括:
基站向终端发送用于对所述终端进行延迟调度的延迟调度信息; 所述终端接收所述延迟调度信息, 根据所接收到的延迟调度信息, 停 止监听 PDCCH, 进入延迟调度状态; 以及根据所述延迟调度信息, 重新开 始监听 PDCCH, 停止自身的延迟调度状态。
在上述方案中, 所述基站向终端发送用于对所述终端进行延迟调度的 延迟调度信息, 包括: 所述基站通过 RRC信令、或媒质接入层控制( MAC ) 信令、 或 PDCCH信令, 向所述终端发送所述延迟调度信息。
在上述方案中, 在所述终端停止监听 PDCCH, 进入延迟调度状态后, 所述方法还包括: 所述终端停止发送调度请求、 或停止发送物理上行控制 信道( PUCCH )信令、 或停止在物理下行共享信道( PUSCH )上发送数据、 或停止发送探测参考信号 (SRS )。
在上述方案中, 在所述终端停止监听 PDCCH, 进入延迟调度状态后, 所述方法还包括: 所述终端保存通信上下文信息、和 /或数据接入承载信息、 和 /或所述基站为自身分配的无线网络临时标识、 和 /或自身当前的传输状态 信息、 和 /或自身当前的无线链路控制层的传输状态信息。
在上述方案中, 在所述终端停止监听 PDCCH, 进入延迟调度状态后, 所述方法还包括: 需要发起业务请求时, 所述终端在要发起业务的优先级 高于预先设置的优先级阈值时, 停止自身的延迟调度状态, 发起所述业务 请求。
在上述方案中, 所述基站向终端发送用于对所述终端进行延迟调度的 延迟调度信息, 为: 所述基站在验证终端已建立的业务为允许时间延迟的 业务或低优先级的业务后, 向所述终端发送所述延迟调度信息。
在上述方案中, 所述延迟调度信息包括: 用于指示所述终端进入延迟 调度状态的延迟调度起始时刻、 和用于指示所述终端停止自身延迟调度状 态的延迟调度终止时刻; 或者, 所述延迟调度信息包括所述延迟调度起始 时刻, 和用于指示所述终端维持自身延迟调度状态时长的延迟调度时长; 或者, 所述延迟调度信息包括延迟调度终止时刻、 或延迟调度时长。
本发明还提供了一种延迟调度系统, 所述系统包括: 基站和终端; 其 中, 信息;
终端, 用于接收所述基站发送的延迟调度信息; 根据所接收到的延迟 调度信息, 停止监听 PDCCH, 进入延迟调度状态; 以及根据所述延迟调度 信息, 重新开始监听 PDCCH, 停止自身的延迟调度状态。
在上述方案中, 所述终端为机器类通信(MTC )设备和 /或人与人通信 ( H2H )设备。
在上述方案中, 所述终端, 还用于在进入延迟调度状态后, 停止发送 调度请求、 或停止发送 PUCCH信令、 或停止在 PUSCH上发送数据、 或停 止发送 SRS。
在上述方案中, 所述终端, 还用于在进入延迟调度状态后, 保存通信 上下文信息、 和 /或数据接入承载信息、 和 /或所述基站为自身分配的无线网 络临时标识、 和 /或自身当前的传输状态信息、 和 /或自身当前的无线链路控 制层的传输状态信息。
在上述方案中, 所述终端, 还用于需要发起业务请求时, 在要发起业 务的优先级高于预先设置的优先级阈值时, 停止自身的延迟调度状态, 发 起所述业务请求。
在上述方案中, 所述基站, 还用于在验证所述终端已建立的业务为允 许时间延迟的业务、 或低优先级的业务后, 向所述终端发送所述延迟调度 信息。
在上述方案中, 所述基站, 还用于通过 RRC信令、 或 MAC信令、 或 PDCCH信令, 向所述终端发送所述延迟调度信息。
本发明的延迟调度方法及系统, 由基站在网络侧过载的情况下, 通过 向终端发送延迟调度信息, 来实现对部分终端的延迟调度, 从而降低网络 侧的负载, 提升了网络的过载处理能力; 而且终端在延迟调度的时间过后, 能够重新开始监听 PDCCH, 再次开展业务, 不需要重新接入网络, 从而避 免了再次接入网络而耗费大量的无线资源, 能够有效节省无线资源, 减轻 网络侧处理负荷。 附图说明
图 1为本发明延迟调度方法的实现流程示意图;
图 2为本发明实施例一中延迟调度过程的实现流程示意图;
图 3为本发明实施例二中延迟调度过程的实现流程示意图;
图 4为本发明实施例三中延迟调度过程的实现流程示意图。 具体实施方式
本发明的基本思想是: 在网络侧负载过载时, 网络侧对终端进行延迟 调度, 使得终端在延迟调度的时间内暂停所开展的业务, 从而降低网络侧 负载, 在预设的延迟调度时间过后, 终端再开展所述业务, 不需要重新接 入网络, 从而避免耗费资源和增加网络侧负荷。
本发明的延迟调度方法, 参照图 1所示, 主要包括以下步驟: 步驟 101 :基站向终端发送用于对所述终端进行延迟调度的延迟调度信 步驟 102: 所述终端接收所述延迟调度信息,根据所接收到的延迟调度 信息,停止监听 PDCCH,进入延迟调度状态; 以及根据所述延迟调度信息, 重新开始监听 PDCCH, 停止自身的延迟调度状态。
这里, 本发明的延迟调度方法, 可以在网络侧过载时降低网络侧负载, 所述网络侧过载可以包括无线接入网过载、 和 /或核心网过载。
其中, 所述基站可以通过 RRC 信令、 或媒质接入层控制 (MAC, Medium Access Control )信令、 或 PDCCH信令, 向所述终端发送所述延迟 调度信息。
这里, 在所述终端停止监听 PDCCH, 进入延迟调度状态后, 所述终端 还停止发送调度请求( Scheduling Request )、 或停止发送 PUCCH信令、 或 停止在 PUSCH 上发送数据、 或停止发送探测参考信号 (SRS, Sounding Reference Signal )。
此处,所述终端停止发送 PUCCH信令可以包括停止发送用于协助基站 实施对终端进行调度决策的指示信息。例如,停止发送的 PUCCH信令可以 包括信道质量指示( CQI, Channel Quality Indicator )、预编码矩阵指示( PMI, Precoding Matrix Indicator ), 或秩指示 ( RI, Rank Indicator )。
这里, 在所述终端停止监听 PDCCH, 进入延迟调度状态后, 所述终端 还保存通信上下文信息 (Context ), 和 /或数据接入承载信息、 和 /或所述基 站为自身分配的无线网络临时标识、 和 /或自身当前的传输状态信息、 和 / 或自身当前的无线链路控制层的传输状态信息。 这里, 在所述终端停止监听 PDCCH, 进入延迟调度状态后, 需要发起 新的业务请求时, 所述终端在要发起的新业务的优先级高于预先设置的优 先级阈值时, 停止自身的延迟调度状态, 发起所述新的业务请求。
所述基站向终端发送用于对所述终端进行延迟调度的延迟调度信息, 具体可以为: 所述基站在验证终端已建立的业务为允许时间延迟(Delay Tolerant ) 的业务、 或低优先级的业务后, 向所述终端发送所述延迟调度信 这里, 所述延迟调度信息包括: 用于指示所述终端进入延迟调度状态 的延迟调度起始时刻、 和用于指示所述终端停止自身延迟调度状态的延迟 调度终止时刻; 或者, 所述延迟调度信息包括所述延迟调度起始时刻, 和 用于指示所述终端维持自身延迟调度状态时长的延迟调度时长; 或者, 所 述延迟调度信息包括延迟调度终止时刻、 或延迟调度时长。
相应的, 本发明还提供了一种延迟调度系统, 所述系统包括: 基站和 延迟调度信息; 终端, 用于接收所述基站发送的延迟调度信息; 根据所接 收到的延迟调度信息, 停止监听 PDCCH, 进入延迟调度状态; 以及根据所 述延迟调度信息, 重新开始监听 PDCCH, 停止自身的延迟调度状态。
这里, 所述终端具体可以为 MTC设备、 和 /或 H2H设备。
这里, 所述终端还可以用于在进入延迟调度状态后, 停止发送调度请 求、 或停止发送 PUCCH信令、 或停止在 PUSCH上发送数据、 或停止发送
SRS。
这里, 所述终端还可以用于在进入延迟调度状态后, 保存通信上下文 信息、 和 /或数据接入承载信息、 和 /或所述基站为自身分配的无线网络临时 标识、 和 /或自身当前的传输状态信息、 和 /或自身当前的无线链路控制层的 传输状态信息。 这里, 所述终端还可以用于需要发起新的业务请求时, 在要发起的新 业务的优先级高于预先设置的优先级阈值时, 停止自身的延迟调度状态, 发起所述新的业务请求。
这里, 所述基站还可以用于在验证所述终端已建立的业务为允许时间 延迟的业务、 或低优先级业务后, 向所述终端发送所述延迟调度信息。 其 中, 所述基站可以通过 RRC信令、 或 MAC信令、 或 PDCCH信令, 向所 述终端发送所述延迟调度信息。
实施例一
本实施例以 MTC设备为例进行说明, 在长期演进(LTE, Long-Term Evolution )系统中, MTC设备通过基站 1接入网络并处于连接状态。 此时, 该 MTC设备已经完成随机接入流程、 完成加密流程、 建立了用于数据传输 的数据接入承载(DRB, Data Radio Bearer )0 该 MTC正在开展业务, 如向 MTC服务器发送数据。 由于接入网络的 MTC设备与 H2H设备数量众多, 引发网络侧的过载, 例如, 可以是核心网网元如 MME过载, 或者是基站 1 过载。
此时, 基站 1需要降低当前的负载以便保证当前网络处于正常的状态。 本实施例中, 基站 1 可以采用如下的延迟调度方法, 来降低网络侧负载, 如图 2所示, 具体流程如下:
步驟 201, 基站 1向 MTC设备发送携带有延迟调度信息的 RRC信令; 终止时刻。
在 LTE 中, 采用系统帧号 (SFN, System Frame Number )和子帧号 ( subframe number )表示时间信息, 其中 SFN从 0到 1023循环,每个 SFN 表示 10毫秒; 每个 SFN由 10个子帧组成, 每个子帧表示 1毫秒, 子帧号 从 0到 9。 这里, 基站 1向 MTC设备发送的延迟调度信息中, 延迟调度的 起始时刻具体可以包括延迟调度起始的系统帧号和子帧号, 延迟调度的终 止时刻具体可以包括延迟调度终止的系统帧号和子帧号。
例如, 延迟调度的起始时刻可以为 SFN = 100、 子帧号 = 0, 延迟调度 的终止时刻可以为 SFN=220、 子帧号 = 3。
步驟 202, MTC设备接收基站 1发送的 RRC信令, 从所述 RRC信令 中提取所述延迟调度信息, 并在所述延迟调度信息中延迟调度起始时刻或 者延迟调度起始时刻的下一个子帧, 停止监听 PDCCH, 停止监听 PDCCH 之后, MTC设备便会停止自身当前正在开展的业务。
这里, 在所述延迟调度信息中延迟调度起始时刻停止监听 PDCCH, 还 是在延迟调度起始时刻的下一个子帧停止监听 PDCCH, 可以由协议预先约 定。
例如, 延迟调度的起始时刻为 SFN = 100、 子帧号 = 0时, MTC设备在 SFN=100、子帧号 = 0时,或者在 SFN=100、子帧号 =1时,停止监听 PDCCH。
这里, 在 MTC设备停止监听 PDCCH期间, MTC设备停止发送调度 请求、 或停止发送 PUCCH信令、 或停止在 PUSCH上发送数据、 或停止发 送 SRS, 避免占用空口的无线资源而增加网络侧的负载。
这里, 在 MTC设备停止监听 PDCCH的期间, MTC设备可以保存通 信上下文信息、 和 /或数据接入承载信息、 和 /或基站 1为自身分配的无线网 络临时标识( RNTI , Radio Network Temporary Identifier )、 和 /或其他的专用 无线资源配置信息 (RadioResourceConfigDedicated )。 如此, 在重新监听 PDCCH时, MTC设备可以沿用原来的配置, 不需要再次耗费空口信令来 配置上述各参数。 其中, 通信上下文信息(Context )可以包括 MTC设备所 采用的加密算法、 完整性保护算法等。
在 MTC设备停止监听 PDCCH期间, MTC设备还可以保存自身当前 的传输状态信息、 和 /或无线链路控制 (RLC, Radio Link Control )层的传 输状态信息, 其中, 传输状态信息可以包括传输的分组数据汇聚协议
( PDCP, Packet Data Convergence Protocol )序列号、 以及未传输的 PDCP 序列号, RLC层的传输状态信息可以包括已传输的 RLC层序列号和未传输 的 RLC层序列号。 这样, 在 MTC设备重新监听 PDCCH后, 可以继续向 基站 1发送数据, 并且可以保证数据不发生丟失。
步驟 203 , MTC设备在所述延迟调低信息中延迟调度终止时刻或延迟 调度终止时刻的下一个子帧, 重新开始监听 PDCCH, 使得 MTC设备可以 继续与网络侧保持通信, 可以继续开展业务。
这里, 在延迟调度终止时刻重新开始监听 PDCCH, 还是在延迟调度终 止时刻的下一个子帧重新开始监听 PDCCH, 可以由协议预先约定。
例如, 延迟调度的终止时刻为 SFN=220、 子帧号 = 3时, MTC设备在 SFN=220、 子帧号 = 3时, 或者在 SFN=220、 子帧号 =4时, 重新开始监听 PDCCH。
这里, 在 MTC设备重新开始监听 PDCCH后, MTC设备允许自身发 送调度请求, 以及允许自身发送 PUCCH上承载的控制信息和 PUSCH上承 载的数据。
本实施例中, 采用延迟调度的方法, 使得 MTC设备在一段时间内不会 向核心网传输自身的非接入层信令和数据, 从而有效降低空口的负载、 以 及核心网侧的负载; 同时, 还可以避免 MTC设备再次向网络发送数据时需 要重建 RRC连接、 重新发起加密流程、 重新建立用于数据传输的数据接入 承载等, 从而减少空口的资源消耗。
需要说明的是, 本实施例对于 H2H设备同样适用。
实施例二
本实施例以 H2H设备为例进行说明, 在长期演进系统中, H2H设备通 过基站 1接入网络并处于连接状态。 此时, 该 H2H设备已经完成随机接入 流程、 完成加密流程、 建立了用于数据传输的数据接入承载。 该 H2H设备 正在开展业务, 包括发送数据和接收数据。
由于接入网络的 MTC设备与 H2H设备数量众多, 引发网络侧的过载。 此时, 基站 2需要降低当前网络侧负载, 以便保证网络能够处于正常状态。 本实施例中, 基站 2可以采用如下的延迟调度方法, 来降低网络侧负载, 如图 3所示, 具体流程如下:
步驟 301, 基站 2向 H2H设备发送携带有延迟调度信息的 MAC信令; 其中, 延迟调度起始时刻信息具体可以包括延迟调度起始的 SFN和子 帧号。 延迟调度时长可以是时间长度, 如 20秒, 还可以是子帧数, 如 5个 子帧。
例如, 基站 2向 H2H设备发送的延迟调度信息中, 延迟调度起始时刻 可以为 SFN = 200、 子帧号 = 5, 延迟调度的时长可以为 20秒。
步驟 302, H2H设备接收基站 2发送的 MAC信令, 从所述 MAC信令 中提取所述延迟调度信息, 并在所述延迟调度信息中延迟调度起始时刻或 延迟调度起始时刻的下一个子帧, 停止监听 PDCCH, 停止监听 PDCCH之 后, H2H设备便会停止自身当前正在开展的业务。
例如, 延迟调度的起始时刻为 SFN = 200、 子帧号 = 5时, MTC设备在 SFN = 200、子帧号 = 5时,或者在 SFN=200、子帧号 =6时,停止监听 PDCCH。
这里, 在 H2H设备停止监听 PDCCH期间, H2H设备保存通信上下文 信息, 以便再次与网络侧通信时可以采用原来的配置。
这里, 在 H2H设备停止监听 PDCCH期间, H2H设备停止发送调度请 求、 或停止发送 PUCCH信令、 或停止在 PUSCH上发送数据, 避免再次占 用空口的无线资源而增加网络侧负载。
步驟 303 , H2H设备在所述延迟调度信息中的延迟调度时长之后, 开 始监听 PDCCH, 如此, H2H设备可以继续与网络侧保持通信, 可以继续开 展业务。
例如, 在延迟调度时长为 20秒时, H2H设备在停止监听 PDCCH的时 长为 20秒后, 重新开始监听 PDCCH。
本实施例中, 在步驟 301中还包括: 基站 2判断所述 H2H设备建立的 业务是否为允许时间延迟的业务, 如果是, 则向所述 H2H设备发送携带有 延迟调度信息的 MAC信令, 以延迟调度所述 H2H设备; 如果不是, 则基 站 2不向所述 H2H设备发送所述延迟调度信息,不延迟调度所述 H2H设备。 这里, 基站 2可以从 H2H设备发起 RRC连接的原因值中获知所述 H2H设 备已建立的业务是否是允许时间延迟的业务。
本实施例中, 所述调度延迟方法中还包括: 如果在 H2H设备停止监听 PDCCH期间, 该 H2H设备需要发起新的业务请求, 并且要发起的新业务 优先级高于预先设置的优先级阈值,则 H2H设备终止自身的延迟调度状态, 向基站 2发送调度请求或业务请求, 并重新开始监听 PDCCH, 以便及时建 立新的数据接入承载用于正常优先级或高优先级业务的数据传输。
这里, 所述优先级阈值可以预先在 H2H设备和基站 2中配置, 也可以 由基站 2在向 H2H设备发送延迟调度信息之前或同时, 将所述优先级阈值 通知给 H2H设备。
这里, 如果 H2H设备终止自身的延迟调度状态, 向基站 2发送调度请 求时, H2H设备没有用于发送所述新的调度请求或业务请求的可用上行授 权(UL Grant ), 则 H2H设备向基站 2发起随机接入, 获得上行授权, 再通 过所获得的上行授权发送所述新的调度请求或业务请求到基站 2。
需要说明的是, 本实施例对 MTC设备同样适用。
实施例三
本实施例中, 处于过载状态的基站 3选择 MTC设备实施延迟调度, 以 便减少当前的负载, 具体流程如下:
步驟 401: 基站 3通过 PDCCH信令向 MTC设备发送延迟调度信息; 这里, MTC 设备通过基站 3 为自身分配的 RNTI 确定属于自己的 PDCCH信令。
由于 PDCCH信令的接收限定在 1个子帧内, 即 MTC设备在每一毫秒 接收属于该子帧的 PDCCH信令, 因此, 本实施例中, 延迟调度信息不需要 包含延迟调度的起始时刻, 可以仅包含延迟调度的终止时刻、 或延迟调度 的时长。 这里, 延迟调度信息不包含延迟调度的起始时刻时, 默认延迟调 度的起始时刻为 MTC设备接收到所述 PDCCH信令时的子帧。
步驟 402: MTC设备在当前子帧接收到所述 PDCCH信令后, 从所述 PDCCH信令中提取所述延迟调度信息, 并从当前子帧的下一个子帧开始停 止监听 PDCCH;
在 MTC设备停止监听 PDCCH期间, MTC设备保存通信上下文信息 ( Context ), 以便再次与网络侧通信时可以采用原来的配置。 在 MTC设备 停止监听 PDCCH期间, MTC设备停止发送调度请求( Scheduling Request )、 停止发送 PUCCH信令、 停止在 PUSCH上发送数据、 以及停止发送 SRS, 避免再次占用空口的无线资源而增加网络侧的负载。
步驟 403: 在停止监听 PDCCH时长等于延迟调度的时长时、 或在所述 延迟调度终止时刻的下一个子帧, MTC设备重新开始监听 PDCCH。
这里, 步驟 403与上述实施例一中步驟 203、 以及实施例二中步驟 303 的具体实现过程相似, 在此不再赘述。 需要说明的是, 本实施例对于 H2H 设备同样适用。
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。 工业实用性
本发明的延迟调度方法及系统, 由基站在网络侧过载的情况下, 通过 向终端发送延迟调度信息, 来实现对部分终端的延迟调度, 能够降低网络 侧的负载, 提升网络的过载处理能力; 而且终端在延迟调度的时间过后, 能够重新开始监听 PDCCH, 再次开展业务, 不需要重新接入网络, 从而避 免再次接入网络而耗费大量的无线资源, 有效节省无线资源, 减轻网络侧 处理负荷。

Claims

权利要求书
1、 一种延迟调度方法, 其特征在于, 所述方法包括:
基站向终端发送用于对所述终端进行延迟调度的延迟调度信息; 所述终端接收所述延迟调度信息, 根据所接收到的延迟调度信息, 停 止监听物理下行控制信道 PDCCH, 进入延迟调度状态; 以及根据所述延迟 调度信息, 重新开始监听 PDCCH, 停止自身的延迟调度状态。
2、 根据权利要求 1所述延迟调度方法, 其特征在于, 所述基站向终端 发送用于对所述终端进行延迟调度的延迟调度信息, 包括:
所述基站通过 RRC信令、 或媒质接入层控制 MAC信令、 或 PDCCH 信令, 向所述终端发送所述延迟调度信息。
3、 根据权利要求 1所述延迟调度方法, 其特征在于, 在所述终端停止 监听 PDCCH, 进入延迟调度状态后, 所述方法还包括:
所述终端停止发送调度请求、或停止发送物理上行控制信道 PUCCH信 令、或停止在物理下行共享信道 PUSCH上发送数据、 或停止发送探测参考 信号 SRS。
4、 根据权利要求 1所述延迟调度方法, 其特征在于, 在所述终端停止 监听 PDCCH, 进入延迟调度状态后, 所述方法还包括:
所述终端保存通信上下文信息、 和 /或数据接入承载信息、 和 /或所述基 站为自身分配的无线网络临时标识、 和 /或自身当前的传输状态信息、 和 / 或自身当前的无线链路控制层的传输状态信息。
5、 根据权利要求 1所述延迟调度方法, 其特征在于, 在所述终端停止 监听 PDCCH, 进入延迟调度状态后, 所述方法还包括:
需要发起业务请求时, 所述终端在要发起业务的优先级高于预先设置 的优先级阈值时, 停止自身的延迟调度状态, 发起所述业务请求。
6、 根据权利要求 1所述延迟调度方法, 其特征在于, 所述基站向终端 发送用于对所述终端进行延迟调度的延迟调度信息, 为:
所述基站在验证终端已建立的业务为允许时间延迟的业务或低优先级 的业务后, 向所述终端发送所述延迟调度信息。
7、 根据权利要求 1至 6任一项所述延迟调度方法, 其特征在于, 所述延迟调度信息包括: 用于指示所述终端进入延迟调度状态的延迟 调度起始时刻、 和用于指示所述终端停止自身延迟调度状态的延迟调度终 止时刻; 或者, 所述延迟调度信息包括所述延迟调度起始时刻, 和用于指 示所述终端维持自身延迟调度状态时长的延迟调度时长; 或者, 所述延迟 调度信息包括延迟调度终止时刻、 或延迟调度时长。
8、 一种延迟调度系统, 其特征在于, 所述系统包括: 基站和终端; 其 中, 信息;
终端, 用于接收所述基站发送的延迟调度信息; 根据所接收到的延迟 调度信息, 停止监听 PDCCH, 进入延迟调度状态; 以及根据所述延迟调度 信息, 重新开始监听 PDCCH, 停止自身的延迟调度状态。
9、 根据权利要求 8所述延迟调度系统, 其特征在于, 所述终端为机器 类通信 MTC设备和 /或人与人通信 H2H设备。
10、 根据权利要求 8或 9所述延迟调度系统, 其特征在于, 所述终端, 还用于在进入延迟调度状态后,停止发送调度请求、或停止发送 PUCCH信 令、 或停止在 PUSCH上发送数据、 或停止发送 SRS。
11、 根据权利要求 8或 9所述延迟调度系统, 其特征在于, 所述终端, 还用于在进入延迟调度状态后, 保存通信上下文信息、 和 /或数据接入承载 信息、 和 /或所述基站为自身分配的无线网络临时标识、 和 /或自身当前的传 输状态信息、 和 /或自身当前的无线链路控制层的传输状态信息。
12、 根据权利要求 8或 9所述延迟调度系统, 其特征在于, 所述终端, 还用于需要发起业务请求时, 在要发起业务的优先级高于预先设置的优先 级阈值时, 停止自身的延迟调度状态, 发起所述业务请求。
13、 根据权利要求 8所述延迟调度系统, 其特征在于, 所述基站, 还 用于在验证所述终端已建立的业务为允许时间延迟的业务、 或低优先级的 业务后, 向所述终端发送所述延迟调度信息。
14、根据权利要求 8或 13所述延迟调度系统,其特征在于, 所述基站, 还用于通过 RRC信令、 或 MAC信令、 或 PDCCH信令, 向所述终端发送 所述延迟调度信息。
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