WO2013102389A1 - Dispositif et procédé de réception discontinue - Google Patents

Dispositif et procédé de réception discontinue Download PDF

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Publication number
WO2013102389A1
WO2013102389A1 PCT/CN2012/085917 CN2012085917W WO2013102389A1 WO 2013102389 A1 WO2013102389 A1 WO 2013102389A1 CN 2012085917 W CN2012085917 W CN 2012085917W WO 2013102389 A1 WO2013102389 A1 WO 2013102389A1
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WO
WIPO (PCT)
Prior art keywords
drx
additional
time period
duration
state
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Application number
PCT/CN2012/085917
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English (en)
Chinese (zh)
Inventor
李亚娟
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华为技术有限公司
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Publication of WO2013102389A1 publication Critical patent/WO2013102389A1/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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Embodiments of the present invention relate to the field of communications, and more particularly, to a method and apparatus for DRX (Discontinuous Reception). Background technique
  • the mobile Internet business environment has overturned the traffic model of traditional circuit domain services.
  • Typical mobile Internet business models such as QQ under Smartphone, App Store, BlackBerry, Twitter (Twitter) ) and other applications.
  • the network transmits data every short time (tens of seconds, minutes) to trigger the process of paging and connection establishment, which causes the network load to rise sharply.
  • Long Term Evolution LTE, Long Term
  • the connected state DRX mechanism allows a user equipment (UE, User Equipment) to periodically switch between a sleep state and an active state while maintaining a Radio Resource Control (RRC) connection.
  • RRC Radio Resource Control
  • the connected state DRX mechanism divides the connection state of the UE into an active state phase and a sleep state phase.
  • the receiving antenna of the UE When the UE is in the active state, the receiving antenna of the UE is turned on, so that the UE receives the downlink data packet, and the power consumption of the UE is high.
  • the receiving antenna of the UE When the UE is in the sleep state, the receiving antenna of the UE is closed, and the UE cannot receive the downlink data packet.
  • the UE is in power saving mode, but the context of the RRC connection remains.
  • the existing connected state DRX mechanism has some small idle time before the UE enters the sleep state stage, For example, after the UE sends a scheduling request (SR) message, it waits for the process of scheduling the evolved base station (eNB or e-NodeB, evolutional Node B) and retransmits the Hybrid Automatic Repeat Request (HARQ) message.
  • SR scheduling request
  • the UE In the case that there is no other data packet transmission in the waiting time, the UE still needs to remain in the active state phase, so that the physical downlink control channel (PDCCH) needs to be continuously detected, which causes the UE to consume more power.
  • the change of the connected state DRX cycle is implemented by changing the configuration of the RRC signaling, so adjusting the connected state DRX mechanism by changing the connected state DRX cycle takes a long time, a large delay, and is inflexible.
  • the eNB cannot instruct the UE to quickly enter the sleep state. Summary of the invention
  • the embodiments of the present invention provide a DRX method and apparatus, which can enable a UE to quickly enter a sleep state in an idle time that is not scheduled by a base station.
  • a method for discontinuous reception of DRX including: determining whether to schedule a UE within a time period; if it is determined that the UE is not scheduled within a time period, sending an additional DRX command to the UE, attaching The DRX command is used to instruct the UE to perform DRX for a period of time to be in a sleep state.
  • a method for discontinuous reception of DRX comprising: receiving an additional DRX command sent by a base station; performing DRX to sleep in a time period according to an indication of an additional DRX command.
  • an apparatus for discontinuously receiving a DRX including: a determining unit, configured to determine whether to schedule a UE in a time period; and a sending unit, configured to determine not to schedule in a time period
  • an additional DRX command is sent to the UE, and the additional DRX command is used to instruct the UE to perform DRX for a period of time to be in a sleep state.
  • a device for discontinuous reception of DRX comprising: a receiving unit, configured to receive an additional DRX command sent by a base station; and an executing unit, configured to, according to an indication of an additional DRX command, in a time period DRX is executed internally to sleep.
  • the embodiment of the present invention can perform a new sleep mode by triggering an additional DRX command in a small idle time when the UE does not send or receive a data packet without changing the existing DRX configuration of the UE, thereby making the UE more power-saving. . DRAWINGS
  • FIG. 1 is a flow chart of a method of a DRX according to an embodiment of the present invention at a base station side.
  • FIG. 2 is a flow chart of a method of a DRX according to an embodiment of the present invention at a UE side.
  • FIG. 3 is a flow chart of a method of DRX in accordance with an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an additional DRX command in accordance with an embodiment of the present invention.
  • Figure 5 is a schematic diagram of an additional DRX command in accordance with an embodiment of the present invention.
  • Figure 6 is a schematic diagram of an additional DRX command in accordance with an embodiment of the present invention.
  • Figure 7 is a schematic diagram of an additional DRX command in accordance with an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of an apparatus of a DRX according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of an apparatus of a DRX according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of an apparatus of a DRX according to an embodiment of the present invention. detailed description
  • the UE may also be referred to as a mobile terminal (Mobile Terminal), a mobile user equipment, or the like, and may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network).
  • the user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle,
  • the wireless access network exchanges languages and/or data.
  • a method of a DRX according to an embodiment of the present invention at a base station side will be described with reference to FIG. As shown in Figure 1.
  • the eNB determines whether to schedule the UE within a time period.
  • the eNB sends an additional DRX command to the UE, the additional DRX command is used to indicate that the UE performs DRX in the one time period to be in a sleep state.
  • the UE side method according to the DRX of the embodiment of the present invention includes the following steps:
  • the UE receives an additional DRX command sent by the base station.
  • the UE performs DRX to sleep in a period of time according to the indication of the additional DRX command.
  • the method of the DRX in the embodiment of the present invention can enable the UE to enter the sleep state more quickly in the idle time that is not scheduled by the base station, so that no packet transmission or reception is performed in the UE without changing the existing DRX configuration of the UE.
  • a new sleep mode is executed by triggering the additional DRX command, so that the UE is more power-saving.
  • the connected state DRX cycle includes an active state phase and a sleep state phase, wherein in the active state phase, the UE listens to the physical downlink control channel to acquire scheduling information sent by the eNB; and in the sleep state phase, the UE does not monitor the physical downlink control. Channel, while in sleep mode. Therefore, a time period is shorter than the active state phase of the connected state DRX cycle.
  • the additional DRX command includes information indicating the execution duration of the DRX. Therefore, regardless of whether the DRX parameter of the connected state DRX mechanism is configured in the network, as long as the UE receives the above-mentioned additional DRX command, the UE performs the sleep mode according to the above information for indicating the execution duration of the DRX in the indicated time period.
  • the additional DRX command may include information indicating the number of times the UE performs DRX in a period of time and information indicating the execution duration of each DRX.
  • the execution time of the DRX is not longer than the time period, that is, the UE performs one or more short DRX sleeps in the time period. Whenever a short DRX is executed, the UE enters a sleep state, thereby saving power consumption.
  • the information for indicating the duration of each DRX may include information indicating that the UE uses a long or short optimized DRX cycle and information on the duration of the long or short optimized DRX cycle, where The long or short optimized DRX cycle is shorter than the active state phase of the connected state DRX cycle.
  • the duration of each DRX is optional.
  • This embodiment gives a long optimized DRX cycle and Two options for short optimized DRX cycles, each of which is an optimization of the existing DRX sleep mechanism.
  • the base station may select a suitable optimized DRX period for the UE based on the actual application scenario, so that the UE enters sleep during a period in which the base station does not schedule data to the UE.
  • the UE can perform a single or multiple optimized DRX according to the additional DRX command.
  • the specific process of the DRX optimized by the UE and the eNB is described in detail below with reference to FIG.
  • the UE when the UE has entered the connection mode and has been in normal communication with the eNB, if the eNB determines that the UE will not be scheduled for a short period of time, the UE is triggered to start DRX. At this time, the eNB sends an additional DRX command to the UE, instructing the UE to perform DRX.
  • the additional DRX command can be obtained by modifying the additional DRX command of the Media Access Control (MAC) layer without modifying the DRX parameters delivered through the RRC signaling.
  • the DRX parameters include: duration timer (onDurationTimer), DRX inactivity timer (drx-Inactivity Timer), DRX retransmission timer (drx-RetransmissionTimer), long DRX period offset UongDRX-CycleStartOffset), short DRX cycle (small DRX-Cycle) and DRX short cycle timer ( drxShortCycleTimer ).
  • the eNB determines that the 'segment idle time does not match the configured DRX parameter or the initiated connected state DRX mechanism, for example, the connected state DRX cycle. It is configured as 20 subframes, but the eNB determines that this small segment of idle time has only 2 subframes, which is not enough to perform a complete connected state DRX cycle, and the eNB causes the UE to sleep according to the additional DRX command by triggering single or multiple DRX. That is, the UE sleeps only 2 subframes, so that the UE is fully powered.
  • both the UE and the eNB need to restore the original connected state DRX mechanism.
  • a UE that has been configured with a DRX parameter but does not initiate a connected state DRX mechanism will still not initiate the connected state DRX mechanism, or the UE that originally configured the DRX parameter and initiates the connected state DRX mechanism continues the original connected state DRX mechanism. That is, the connected state DRX mechanism is executed according to the original DRX parameters.
  • the UE does not configure the DRX parameter and does not initiate the connected state DRX mechanism, then It is easier for the eNB to cause the UE to perform the specified sleep time by triggering a single DRX. However, if the UE is configured with the DRX parameter, multiple DRXs can be performed, and a timer such as a duration timer can be used to start sleeping at an appropriate time.
  • the additional DRX command sent by the eNB to the UE has 2 bytes (Byte), wherein the first byte uses 1 bit (bit) of the reserved information bits of the connected state DRX command, for example, using FIG. 4 to FIG.
  • the second bit shown in 7 indicates whether the DRX command sent by the eNB to the UE is an additional DRX command or a connected state DRX command.
  • the connected state DRX command has only 1 byte, of which the first 2 bits are reserved information bits, the third bit is used as the extended information bit, and the last 5 bits are used as the Localization Identity (LCID).
  • LCID Localization Identity
  • the second byte of the additional DRX command includes information on the execution duration of the DRX, or the number of executions of the DRX and the execution time of each DRX, or the long or short optimized DRX cycle, and the long or short
  • the information such as the duration of the DRX additional period corresponding to the optimized DRX cycle may be as follows. It should be noted that, in the manner described below, the positional arrangement of the bits may be changed, and all of them are protected by the embodiment of the present invention.
  • the first mode all 8 bits are used to indicate the execution duration of the DRX.
  • the subframe is in units, for example, 00000001 indicates sleep 1 subframe, 00000011 indicates sleep 3 subframe, and so on.
  • the first 3 bits are used to indicate the number of DRX executions, for example, 000 is used to represent a single DRX, 001 is used to represent 2 DRXs, and so on, until 111 is used to represent 8 times.
  • the 4-8th bit is used to indicate the execution duration of the specific DRX, in units of subframes. As shown in Figure 5.
  • the first 3 bits are used to indicate the number of DRX executions, for example, 000 is used to represent a single DRX, 001 is used to represent 2 DRXs, and so on, until 111 is used to represent 8 times.
  • the 4th bit is used to indicate a long or short DRX cycle.
  • the last 4 bits are used to indicate the length of the specific DRX additional period.
  • the first 2 bits are used to indicate the number of DRX executions, for example, 00 to 11 indicate multiple times, and then the third bit is used to indicate a single DRX, as shown in FIG.
  • 1 bit can be used to indicate a long or short DRX cycle, and the other 4 bits are used to indicate the length of a specific DRX additional period. For example, as shown in FIG. 6 and FIG.
  • the last 4 bits of the 2nd byte of the additional DRX command are used to indicate the DRX additional period, and thus the 4th bit information bits are combined to represent the corresponding long Or the difference in the length of the short DRX cycle.
  • the additional DRX command indicates a short period, and the next four bits indicate 0001. If numbering starts from 0000, it corresponds to sf5 in the short DRX cycle (small DRX-Cycle). If numbering starts from 0001, the corresponding Below is the sf2 in the short DRX cycle (small DRX-Cycle).
  • the long DRX cycle offset ( longDRX-CycleStartOffset ) is also the same method. An example of a short DRX cycle and a long DRX cycle offset is given below.
  • the original connected state may also be used.
  • the DRX command is directly extended on the basis of the DRX command.
  • a new LCID can be used to construct an additional DRX command.
  • the configuration is similar to the above, and is not described here.
  • the UE is woken up and still recovers to the original connected state DRX mechanism: that is, for the UE performing a single DRX, if the UE is not configured before receiving the additional DRX command The DRX parameter is still returned to the state without the connected state DRX mechanism; if the UE is configured with the DRX parameter before receiving the additional DRX command but does not initiate the connected state DRX mechanism, then Reverting to the state in which the connected state DRX mechanism is not activated; if the UE configures the DRX parameter before the additional DRX command and the connected state DRX mechanism is activated, the original connected state DRX mechanism is still restored, that is, according to the original connection The DRX parameter of the state DRX mechanism performs a sleep state.
  • the UE configures the DRX parameter before receiving the additional DRX command but does not initiate the connected state DRX mechanism, it still returns to the state in which the connected state DRX mechanism is not activated.
  • the DRX UE that performs multiple optimizations does not configure the DRX parameter, the DRX that is optimized multiple times cannot be performed because there is no timer such as a duration timer, and the UE does not know when to start going to sleep.
  • the UE configures the DRX parameter before the additional DRX command and starts the connected state DRX mechanism, the DRX is not performed multiple times to avoid conflict between the optimized DRX and the original connected state DRX mechanism.
  • the DRX method in the embodiment of the present invention can solve the problem that the UE cannot enter the sleep state more quickly during the idle time in the active state phase, so that the UE does not change without changing the existing DRX configuration of the UE.
  • the new sleep mode is executed by the trigger of the additional DRX command during the small idle time when the data packet is sent or received, so that the UE is more power-saving.
  • the apparatus 80 that discontinuously receives the DRX includes a determining unit 81 and a transmitting unit 82.
  • the determining unit 81 is configured to determine whether to schedule the UE within a time period. If the determining unit 81 determines that the UE is not scheduled for a period of time, the transmitting unit 82 is configured to send an additional DRX command to the UE, the additional DRX instructing the UE to perform DRX to be in a sleep state within the one time period.
  • the device 80 that discontinuously receives the DRX may be configured in the base station, the determining unit 81 may be a processor, and the transmitting unit 82 may be implemented by an interface.
  • the apparatus 90 that discontinuously receives DRX includes a receiving unit 91 and an executing unit 92.
  • the receiving unit 91 is configured to receive an additional DRX command sent by the base station.
  • the execution unit 92 is configured to perform DRX to be in a sleep state for a period of time according to an indication of the additional DRX command.
  • the device 100 for discontinuous reception of DRX further includes a recovery unit 93, configured to resume the initial working state after performing DRX in a sleep state in a period of time; wherein the initial working state is the connected state DRX working state.
  • the DRX working state or no DRX working state is not started.
  • the devices 90, 100 that do not continuously receive the DRX may be configured in the UE, the receiving unit 91 may be an interface, and the execution unit 92, the recovery unit 93 may be implemented by a processor.
  • the additional DRX command may include information indicating the execution duration of the DRX.
  • the additional DRX command includes information indicating the number of times the UE performs DRX in a period of time and information indicating the execution duration of each DRX.
  • the information for indicating the duration of each DRX includes information indicating that the UE uses a long or short optimized DRX cycle and information on the length of the long or short optimized DRX cycle, where long or short optimization The DRX cycle is shorter than the active state phase of the connected state DRX cycle.
  • the connected state DRX cycle includes an active state phase and a sleep state phase, wherein in the active state phase, the UE listens to the physical downlink control channel to acquire scheduling information; in the sleep state phase, the UE does not listen to the physical downlink control channel. Then, a time period is shorter than the active state phase of the connected state DRX cycle.
  • the device of the DRX of the embodiment of the present invention can solve the problem that the UE cannot enter the sleep state more quickly during the idle time scheduled by the base station, so that the UE does not send or receive the data packet without changing the existing DRX configuration of the UE.
  • a new sleep mode is executed by triggering the additional DRX command, so that the UE is more power-saving.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the components displayed by the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .
  • ROM read-only memory
  • RAM random access memory
  • magnetic disk or an optical disk and the like, which can store program codes.

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

Abstract

L'invention concerne un dispositif et un procédé de réception discontinue (DRX). Le procédé DRX comprend : la détermination pour savoir si un équipement utilisateur (UE) (11) doit être programmé ou non pendant une période de temps ; et l'envoi d'une commande DRX supplémentaire (12) à l'UE si l'UE n'est pas programmé pendant une période de temps. La commande DRX supplémentaire est utilisée pour indiquer que l'UE exécute la DRX pendant la période de temps, de manière à être dans un état de veille. Sur la base de l'absence de changement de la configuration DRX existante de l'UE, les modes de réalisation de la présente invention peuvent exécuter un nouveau modèle de veille par déclenchement de la commande DRX supplémentaire pendant une courte période de temps libre, pendant laquelle l'UE n'envoie ni ne reçoit de paquet de données.
PCT/CN2012/085917 2012-01-05 2012-12-05 Dispositif et procédé de réception discontinue WO2013102389A1 (fr)

Applications Claiming Priority (2)

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CN201210002143.7 2012-01-05
CN2012100021437A CN103200653A (zh) 2012-01-05 2012-01-05 非连续接收的方法及装置

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