WO2012109927A1 - Procédé et dispositif d'envoi de données pour un terminal - Google Patents

Procédé et dispositif d'envoi de données pour un terminal Download PDF

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Publication number
WO2012109927A1
WO2012109927A1 PCT/CN2011/082137 CN2011082137W WO2012109927A1 WO 2012109927 A1 WO2012109927 A1 WO 2012109927A1 CN 2011082137 W CN2011082137 W CN 2011082137W WO 2012109927 A1 WO2012109927 A1 WO 2012109927A1
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WO
WIPO (PCT)
Prior art keywords
terminal
data
base station
information
delay
Prior art date
Application number
PCT/CN2011/082137
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English (en)
Chinese (zh)
Inventor
邓云
戴谦
Original Assignee
中兴通讯股份有限公司
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Filing date
Publication date
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Publication of WO2012109927A1 publication Critical patent/WO2012109927A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/44—TPC being performed in particular situations in connection with interruption of transmission

Definitions

  • the present invention relates to a machine type communication (MTC) technology, and more particularly to a method and device for transmitting data by a terminal.
  • MTC machine type communication
  • M2M Machine to Machine
  • M2M applications include industrial applications, home applications, personal applications, etc.
  • industry applications include traffic monitoring, alarm systems, marine rescue, vending machines, car payment, etc.
  • Home applications include automatic meter reading, temperature control, etc.
  • Applications include life testing, remote diagnosis, and more.
  • M2M objects are machine-to-machine, person-to-machine, and data communication between one or more machines is defined as Machine Type Communication (MTC). In this case, Less human interaction is required.
  • MTC Machine Type Communication
  • the machine participating in the MTC is called an MTC device or an MTC device (MTC Device).
  • MTC Device MTC Device
  • the MTC device can communicate with other MTC devices or MTC servers through a Public Land Mobile-communication Network (PLMN).
  • PLMN Public Land Mobile-communication Network
  • 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. Generally, multiple base stations are connected to the same core network element, such as a Mobility Management Entity (MME). When many MTC devices in all base stations need to access the network, for example, after power is restored, when power is restored. All MTC devices need to be registered in the network, and the MME will suffer from huge signaling impacts, which may cause overload.
  • 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
  • FIG. 1 is a schematic diagram of the existing DRX state, such as As shown in FIG. 1, in the DRX state, the terminal is allowed to continuously monitor the PDCCH; otherwise, the UE needs to continuously monitor the PDCCH.
  • the terminal may allocate resources according to PDCCH signaling or according to pre- The configured resource receives data on the PDSCH or transmits data on a Physical Uplink Shared Channel (PUSCH).
  • PUSCH Physical Uplink Shared Channel
  • the base station In the DRX state, the base station is configured with a timer such as a duration timer (onDurationTimer) and a DRX activity timer (drx-InactivityTimer), and the terminal obtains a start subframe of duration (OnDuration) according to a protocol-predefined calculation expression. Then, the terminal is in an active state for a period of time (Active Time, the terminal needs to continuously monitor the PDCCH, and the Active Time can be greater than or equal to the onDurationTimer); after the active state ends, the terminal enters an inactive state (the terminal does not need to monitor the PDCCH). The terminal obtains the starting subframe of the next OnDuration according to the calculation expression predefined by the protocol, and enters the active state again, and so on, until the base station terminates the DRX state.
  • a timer such as a duration timer (onDurationTimer) and a DRX activity timer (drx-InactivityTimer)
  • OnDuration a start
  • the terminal is in the inactive state of DRX. If there is no uplink grant (UL Grant) and a dedicated scheduling request (Scheduling Request), it cannot send data to the base station (the base station will not send data, or signaling to the terminal at this time). If the terminal needs to send data, the terminal will initiate random access. After obtaining the uplink grant through random access, the terminal can send data to the base station. Considering that after the introduction of the MTC device, the number of terminals in which the access network is in the connected state (some in the DRX state) will be very large. If the terminal is in an inactive state, it is required to initiate random access because of data transmission, and the terminal that initially accesses the network.
  • the main object of the present invention is to provide a method and a device for transmitting data by a terminal, which can effectively control data transmitted by terminals in a discontinuous reception state, reduce the number of random accesses, and avoid unnecessary power consumption.
  • a method for a terminal to send data includes:
  • the terminal in the discontinuous reception state has data to be transmitted at the inactive time; the terminal transmits data to the base station in the next active state.
  • the method also includes:
  • the terminal knows in a preset manner that when there is data to be transmitted during the inactivity time, it waits to send data to the base station again in the next active state.
  • the pre-set manner specifically includes: pre-setting a terminal of a specified type, or a terminal of a specified priority, or a terminal that roams, or a terminal that specifies an access level, or a terminal of a specified group, or initiates a designated priority service.
  • the terminal, or the terminal that initiates the delay service needs to wait for the next active state, and then sends data to the base station waiting to be transmitted when inactive.
  • the method also includes:
  • the terminal After receiving the dedicated signaling or system message sent by the base station, the terminal, according to the information carried in the dedicated signaling or the system message, knows that when there is data to be sent in the inactive time, it waits to send to the base station in the next active state. data.
  • the dedicated signaling is radio resource control RRC signaling, or media access layer control MAC signaling, and the dedicated signaling carries information indicating that the delay transmission is allowed; when the system message is adopted, The system message includes information that the designated terminal is allowed to delay transmission; or information that the terminal including the specified priority allows to delay transmission; or, the terminal that includes the specified access level allows the delayed transmission; or, the terminal that includes the roaming allows The delayed transmission of the information; or, the information including the terminal that initiates the specified priority service is allowed to delay the transmission; or the terminal that includes the initiation of the allowed delay service may delay the transmission of the information; or the information including the specified group of terminals allowing the delayed transmission.
  • the dedicated signaling or system message also carries information that delays several activation times, or delays to a certain activation time to resend data.
  • the terminal is a machine type communication MTC device, and/or a person-to-person H2H terminal.
  • a device for transmitting data by a terminal comprising at least a data sending module and a sending control module; wherein
  • a sending control module configured to send a control command to the data sending module in the next active state
  • the data sending module is configured to send, to the base station, the data in the discontinuous receiving state, when the data is to be sent in the inactive time, and when the control command from the sending control module is received.
  • the sending control module is specifically configured to send a control command to the control data sending module in the next active state according to a preset manner or according to a dedicated signaling or system message from the base station.
  • the terminal in the discontinuous reception state sends data to the base station in the next active state when there is data to be transmitted in the inactive time.
  • the invention avoids the problem that the terminal initiates random access in the inactive state of the DRX, which causes random access resources and random access conflicts, and improves the success rate of random access of the entire network; Entering the active state ahead of time, resulting in power consumption problems.
  • Figure 1 is a schematic diagram of an existing DRX state
  • FIG. 2 is a flowchart of a method for transmitting data by a terminal according to the present invention
  • FIG. 3 is a schematic structural diagram of a device for transmitting data by a terminal according to the present invention. detailed description
  • Step 200 A terminal in a discontinuous reception state has data to be transmitted at an inactive time.
  • the terminal comprises an MTC device and/or an H2H device.
  • Step 201 The terminal sends data to the base station in the next active state.
  • the active state refers to a period of time that the terminal needs to monitor the PDCCH according to the existing DRX setting.
  • the terminal may learn to send data to the base station in the next active state when there is data to be sent in the inactive time according to a preset manner; or, after the terminal receives the dedicated signaling or system message sent by the base station, According to the information carried in the dedicated signaling or system message, it is known that when there is data to be transmitted at the inactive time, it is waiting to send data to the base station in the next active state.
  • the pre-set manner refers to pre-setting a terminal of a specified type, or setting a terminal with a specified priority in advance, or setting a roaming terminal in advance, or setting a terminal with a specified access level in advance, or presetting a preset.
  • a terminal that specifies a priority service, or a terminal that specifies a specified group in advance, or a terminal that initiates a delay-allowed service, etc., such a terminal needs to wait for the next active state, and then sends a signal to the base station to wait for transmission when inactive. data.
  • the dedicated signaling may be Radio Resource Control (RRC) signaling or Media Access Layer Control (MAC) signaling, and the dedicated signaling carries information indicating that delaying transmission is allowed;
  • the system message in the system message, includes information that the designated terminal is allowed to delay transmission; or, the information that the terminal including the specified priority allows to delay transmission; or the information that the terminal including the specified access level allows to delay transmission; or The information that includes the roaming terminal allows the delay to be sent; or the terminal that initiates the specified priority service allows the delayed transmission; or the terminal that initiates the allowed delay service may delay the transmitted information; or, the terminal including the specified group allows the delay The message sent.
  • RRC Radio Resource Control
  • MAC Media Access Layer Control
  • information including delaying several activation times, or delaying to the first activation time to resend data is also included.
  • the device of the present invention further provides a device for transmitting data by a terminal, as shown in FIG. 3, which includes at least a data sending module, and a sending control module, where
  • a sending control module configured to send a control command to the data sending module in the next active state Order
  • the data sending module is configured to send, to the base station, the data in the discontinuous receiving state, when the data is to be sent in the inactive time, and when the control command from the sending control module is received.
  • the sending control module is specifically configured to send a control command to the control data sending module in the next active state according to a preset manner or according to a dedicated signaling or system message from the base station.
  • the first embodiment is described by taking an MTC device as an example. It is assumed that in a Long-Term Evolution (LTE) system, an MTC device accesses the network through the base station 1 and is in a connected state. at this time,
  • LTE Long-Term Evolution
  • the base station 1 since the MTC device sends data to the network without interruption, the base station 1 is configured with a discontinuous reception state (DRX state) for the MTC device, so that the base station 1 can be heavily connected by RRC signaling, such as RRC.
  • DRX state discontinuous reception state
  • Configuring RRC Connection Reconfiguration Configuring DRX-related parameters for the MTC device such as the duration timer (onDurationTimer), the DRX activity timer (drx-InactivityTimer), the DRX retransmission timer (DRX-RetransmissionTimer), and the DRX period (which can include Two cycles, one called long DRX-Cycle, one called short DRX-Cycle; or only longDRX-Cycle, and the DRX start offset ( drxStartOffset ).
  • the MTC device will cycle with longDRX-Cycle, "wake up periodically" to monitor the PDCCH, and at least “wake up” the onDurationTimer length each time (at this time the MTC device starts to be in the active state, the MTC device is in the The time of the live state is called Active Time, and the Active Time time can be greater than or equal to onDurationTimer ).
  • Active Time the Active Time time can be greater than or equal to onDurationTimer .
  • the mouth-of-mouth MTC device does not receive the PDCCH (including uplink or downlink) indicated by the base station during the operation of the onDurationTimer, and the MTC enters the inactive state after the onDurationTimer times out. At this time, the Active Time duration is equal to that indicated by the onDurationTimer.
  • the base station configuring the DRX state for the MTC device can reduce the power consumption of the MTC device, and the MTC device does not have to detect the PDCCH in the inactive state because the base station does not schedule the MTC device at this time.
  • the terminal When the MTC device is in an inactive state, as shown in FIG. 1 (or a subframe), when the upper layer of the MTC device indicates to its RRC layer that there is data to be transmitted, according to the method of the present invention, in the first embodiment, the terminal follows In a preset manner, it is known that when there is data to be transmitted at the inactive time, it is waiting to send data to the base station in the next active state. Therefore, in this embodiment, the terminal will send data to the base station in the next active state. In this way, the terminal is prevented from initiating random access in the inactive state of the DRX, causing problems such as random access resources and increased random access conflicts, thereby improving the success rate of random access of the entire network; Active state, resulting in power consumption problems.
  • the MTC device can receive the PDCCH sent by the base station at the next activation time, and the base station can also send an uplink grant to the MTC device for data transmission through the PDCCH, or the base station is next.
  • the activation time provides a dedicated Scheduling Request so that the terminal can report the information it needs to transmit data.
  • the next activation time refers to that the MTC device obtains the calculation according to the DRX configuration.
  • the sub-frame of modulo (shortDRX-Cycle) the length of which is greater than or equal to the length of onDurationTimer.
  • the first embodiment is equally applicable to H2H equipment.
  • the second embodiment is described by taking an H2H device as an example. It is assumed that in the LTE system, the H2H device accesses the network through the base station 2 and is in a connected state. at this time,
  • the base station 2 configures the H2H device with a discontinuous reception state (DRX state), so that the base station 2 can reconfigure through RRC signaling such as RRC connection.
  • RRC Connection Reconfiguration Configure DRX related parameters for H2H devices.
  • the RRC signaling such as an RRC connection request
  • the RRC signaling sends a base station to the base station that the establishment cause is a low priority service, or a delay delay (Delay Tolerant). business. It is also assumed that a terminal that initiates a low priority service or a service that allows delay is preset, and when waiting for the next active state, the data waiting to be transmitted when inactive is transmitted to the base station.
  • the upper layer of the H2H device indicates to the RRC layer that there is data to be sent, because the H2H device initiates a low priority or allows delay. Service, therefore, according to the preset information, the H2H device does not immediately initiate random access, but waits for a period of time until the next activation time to send data to the base station 2.
  • the base station 2 can configure an uplink grant for the H2H device through the PDCCH. Therefore, the H2H device also reduces the occurrence of a random access, thereby reducing the consumption of random access resources and increasing the success rate of random access of other terminals.
  • the second embodiment is equally applicable to MTC devices.
  • the second embodiment describes a terminal that initiates a low priority service or allows a delayed service, which may Wait for the next activation time and then send the data that needs to be transmitted. It can also be extended to other scenarios, t ⁇ :
  • the terminal that initiates a certain priority service may delay the transmission of the data to be transmitted to the next activation time.
  • the subscriber's identification card (USIM, Universal Subscriber Identity Module) stores the signed public land mobile network or the local public land mobile network (HPLMN), which may also include Local public land mobile network (EHPLMN, Equivalent Home PLMN). If the current access network of the terminal is not HPLMN, it indicates that the terminal is a roaming terminal; or, if the current network is neither HPLMN nor EHPLMN, it indicates that the terminal is a roaming terminal. The terminal can learn the PLMN of the current cell through the system message of the accessed cell.
  • USIM Universal Subscriber Identity Module
  • H2H devices If it is a low-priority terminal or a normal-priority terminal, it is only necessary to set a terminal of a certain priority to delay the transmission of the data to be transmitted to the next activation time.
  • these devices can be set to normal priority; for MTC devices of electronic meter reading (such as electricity meters, water meters), these devices can be set as low priority terminals; for monitoring and alarming MTC devices , you can set it as a normal priority terminal, and so on.
  • the USIM card of the terminal stores the access level corresponding to the terminal.
  • the third embodiment is described by taking an MTC device as an example, assuming that in the LTE system, the MTC The device accesses the network through the base station 3 and is in a connected state. at this time,
  • the base station 3 Since the MTC device transmits data to the network without interruption, the base station 3 is configured with a discontinuous reception state (DRX state) for the MTC device, so that the base station 3 can perform RRC signaling, such as RRC Connection Reconfiguration (RRC Connection Reconfiguration).
  • RRC Connection Reconfiguration RRC Connection Reconfiguration
  • the MTC device when the MTC device initially accesses the cell under the control of the base station 3, the MTC device sends a service to the base station 3 to initiate a low priority service or a service that allows delay. It is assumed that the base station 3 sends the MTC device to the MTC device through dedicated signaling.
  • the information that allows the delay to be transmitted may be implemented by adding a cell indicating that the delay is allowed to be transmitted in the existing RRC signaling or medium access layer control (MAC) signaling.
  • MAC medium access layer control
  • the base station 3 may add a DRX configuration parameter to the existing RRC connection reconfiguration signaling, and set information for allowing delayed transmission. In this way, after receiving the signaling, the MTC device knows that it can delay sending data at the DRX inactivity time (if there is data to be sent).
  • the MTC device when the MTC device is in an inactive state and the upper layer of the MTC device indicates to its RRC layer that there is data to be transmitted, the MTC device transmits data to the base station 3 at the next activation time according to the indication of the dedicated signaling. At the next activation time, the base station 3 can configure an uplink grant for the MTC device through the PDCCH. Therefore, the MTC device reduces the occurrence of a random access, thereby reducing the consumption of random access resources and increasing the success rate of random access of other terminals.
  • the base station can notify the terminal to delay a plurality of DRX cycles, that is, the base station additionally informs the terminal through the dedicated signaling to transmit the data that needs to be delayed, to the base station.
  • the base station can notify the terminal to delay a plurality of DRX cycles, that is, the base station additionally informs the terminal through the dedicated signaling to transmit the data that needs to be delayed, to the base station.
  • the information for allowing delayed transmission is sent to the MTC device by using dedicated signaling.
  • the system message may be used to broadcast the information that allows the delayed transmission to the MTC device, and the indication delay allowed in the existing system message is added.
  • system message broadcast is used to allow delayed transmission of information
  • information specifying that the terminal is allowed to delay transmission may be set, such as setting the MTC device and/or the H2H device to allow delayed transmission; or, the terminal of the specified priority may be allowed to delay.
  • the terminal receives the system message if the terminal meets the corresponding condition, the data that needs to be reported may be delayed in the inactive state. Further, in the system message, information that can delay data transmission to the base station after several activation times can be added, so that the base station can better schedule different terminals according to its own load and enhance the throughput of the system.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif d'envoi de données destinés à un terminal. Le procédé comprend les étapes suivantes : lorsqu'un terminal dans un état de réception discontinue doit envoyer des données au cours de la période d'inactivation, le terminal envoie les données à la station de base lors du prochain état d'activation. L'invention permet de résoudre des problèmes tels que la consommation de ressources à accès aléatoire et l'aggravation des conflits d'accès aléatoire survenant lorsque le terminal initie un accès aléatoire en état d'inactivation d'une réception discontinue. Le taux de réussite de l'accès aléatoire de l'ensemble du réseau est amélioré ; dans le même temps, le problème de la consommation d'énergie survenant lorsque le terminal entre en état d'activation à l'avance est également évité.
PCT/CN2011/082137 2011-02-14 2011-11-14 Procédé et dispositif d'envoi de données pour un terminal WO2012109927A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110037729.2 2011-02-14
CN2011100377292A CN102638880A (zh) 2011-02-14 2011-02-14 一种终端发送数据的方法及装置

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CN108810857B (zh) 2012-10-29 2024-02-09 华为技术有限公司 一种资源确定方法、基站及用户设备
KR101698952B1 (ko) * 2013-03-29 2017-01-23 후아웨이 테크놀러지 컴퍼니 리미티드 업링크 인증 자원 요구를 제어하는 방법, 사용자 기기, 및 기지국
GB2513312B (en) * 2013-04-22 2020-01-29 Sony Corp Communications system for transmitting and receiving data
KR102171791B1 (ko) 2016-04-01 2020-10-29 후아웨이 테크놀러지 컴퍼니 리미티드 자원 스케줄링 방법, 액세스 네트워크 장치, 및 사용자 장비
CN107645779B (zh) * 2016-07-22 2019-12-13 电信科学技术研究院 一种数据发送、传输方法及装置
CN108271125B (zh) * 2017-01-04 2022-01-28 中兴通讯股份有限公司 数据发送、数据接收方法及装置
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