WO2011157159A2 - Procédé de réception discontinu mixte, station de base et dispositif utilisateur - Google Patents

Procédé de réception discontinu mixte, station de base et dispositif utilisateur Download PDF

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Publication number
WO2011157159A2
WO2011157159A2 PCT/CN2011/075094 CN2011075094W WO2011157159A2 WO 2011157159 A2 WO2011157159 A2 WO 2011157159A2 CN 2011075094 W CN2011075094 W CN 2011075094W WO 2011157159 A2 WO2011157159 A2 WO 2011157159A2
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WO
WIPO (PCT)
Prior art keywords
drx
tau
user equipment
extended
tat
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PCT/CN2011/075094
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English (en)
Chinese (zh)
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WO2011157159A3 (fr
Inventor
夏金环
常俊仁
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华为技术有限公司
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Priority to PCT/CN2011/075094 priority Critical patent/WO2011157159A2/fr
Priority to CN2011800009388A priority patent/CN102257859B/zh
Publication of WO2011157159A2 publication Critical patent/WO2011157159A2/fr
Publication of WO2011157159A3 publication Critical patent/WO2011157159A3/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 communication technologies, and, more particularly, to a hybrid discontinuous reception method and a base station and user equipment. Background technique
  • DRX discontinuous reception refers to a discontinuous reception state, that is, the UE (user equipment) can turn off the receiver for a period of time to save power.
  • LTE Long Term Evolution
  • DRX means that the UE stops monitoring the PDCCH (physical downlink control channel) for a period of time.
  • IDLE DRX inner DRX
  • RRC radio resource control
  • the proprietary resources therefore, in the idle DRX, mainly listen to the paging channel and the broadcast channel, as long as a fixed period is defined, the purpose of discontinuous reception can be achieved. However, if the UE wants to listen to the user data channel, it enters the connection state from the idle state first.
  • ACTIVE DRX active DRX
  • active DRX the DRX in which the UE is in the RRC connection state
  • DRX active DRX
  • MTC (machine type communication) data service transmission exhibits periodic packet characteristics, that is, the amount of data that needs to be transmitted each time is small, and there is a relatively fixed time interval between data transmissions.
  • the existing DRX technology needs to be optimized so that the UE can truly achieve the purpose of power saving. Summary of the invention
  • the present invention has been made in view of the above objects, and an object of the present invention is to provide a hybrid discontinuous reception Method and base station and user equipment, which can be extended for periodic service characteristics of user equipment
  • the DRX cycle and at the same time, enables the user equipment to maintain uplink synchronization in the extended DRX cycle described above.
  • a hybrid discontinuous reception method including: configuring an extended discontinuous reception DRX cycle mode, wherein in the extended DRX cycle mode, configuring an extended DRX cycle, the extension The DRX period includes a plurality of extended DRX periods, each extended DRX period of the plurality of extended DRX periods being greater than or equal to a timing advance timer TAT of the user equipment; configuring the timing advance amount to update the TAU DRX period mode, wherein, in the TAU DRX period mode, a plurality of TAU DRX periods are configured, in the extended DRX period, when the first DRX period of the plurality of extended DRX periods starts or begins to be smaller than The first predetermined time of the TAT is configured with a first one of the plurality of TAU DRX periods, and a time difference between any two adjacent ones of the plurality of TAU DRX periods is less than Transmitting the extended DRX cycle mode and the TAU DRX time period mode to the user equipment
  • Another aspect provides a hybrid discontinuous reception method, comprising: receiving an extended discontinuous reception DRX cycle mode and a timing advance update TAU DRX period mode from a base station; setting according to the extended DRX cycle mode An extended DRX cycle of the user equipment, wherein the extended DRX cycle includes a plurality of extended DRX periods, and each extended DRX period of the plurality of extended DRX periods is greater than or equal to a timing advance timing of the user equipment Setting a plurality of TAU DRX periods of the user equipment according to the TAU DRX period mode, wherein, in the extended DRX period, starting or starting at a first DRX period of the plurality of extended DRX periods The first one of the plurality of TAU DRX periods is set with the first predetermined time less than the TAT, and between any two adjacent TAU DRX periods of the plurality of TAU DRX periods Time difference is less than the TAT; transmitting a sounding reference signal SRS according to the setting of the plurality of
  • a hybrid discontinuous reception method comprising: setting an extended discontinuous reception DRX cycle, wherein the extended DRX cycle includes a plurality of extended DRX periods, the multiple extensions Each extended DRX period in the DRX period is greater than or equal to a timing advance timer TAT for the user equipment; maintaining the first TAT of the user equipment to send a sounding reference signal SRS to the base station at a third predetermined time before the first TAT timeout; entering the fourth predetermined time after transmitting the SRS
  • the timing advance amount updates the TAU DRX period, stays awake from the DRX state during the active time of the TAU DRX period, and receives the timing advance TA command from the base station to maintain uplink synchronization; and resets when the TA command is successfully decoded The first TAT.
  • a hybrid discontinuous reception method including: receiving a sounding reference signal SRS sent from the user equipment; maintaining a second timing advance timer TAT of the user equipment, and referring to Determining, by the second TAT, whether the SRS is an SRS sent by the user equipment at a third predetermined time before the second TAT timeout; determining that the SRS is before the user equipment is timed out by the second TAT In the case of the SRS transmitted by the third predetermined time, the timing advance amount TA is transmitted to the user equipment for the fourth predetermined time after receiving the SRS to cause the user terminal to maintain the uplink synchronization; After the user equipment successfully decodes the TA command, the second predetermined time after the TA command is sent from the user equipment, the second TAT is reset, wherein the second TAT time length of the base station side is smaller than the The time length of the first TAT on the user equipment side is less than the fifth predetermined time.
  • a hybrid discontinuous reception method which includes: receiving an arbitrary sounding reference signal SRS sent by a user equipment or an SRS having a specific identifier; and receiving any SRS sent by the user equipment or having a specific
  • the timing advance TA command is transmitted for a fourth predetermined time after the identified SRS to assist the user equipment to maintain uplink synchronization.
  • a base station including: extended discontinuous reception
  • a DRX periodic mode configuration unit configured to configure an extended DRX cycle mode, where, in the extended DRX cycle mode, an extended DRX cycle is configured, where the extended DRX cycle includes multiple extended DRX periods, where the multiple Each extended DRX period of the extended DRX periods is greater than or equal to the timing advance timer TAT of the user equipment;
  • the timing advance quantity update TAU DRX period mode configuration unit is configured to configure a TAU DRX period mode, wherein In the TAU DRX period mode, a plurality of TAU DRX periods are configured, in the first DRX period of the plurality of extended DRX periods, or a first less than the first of the TATs in the extended DRX period a predetermined time is configured with a first one of the plurality of TAU DRX periods, and a time difference between any two adjacent ones of the plurality of TAU DRX periods is less than the TAT;
  • a user equipment including: a mode receiving unit, configured to receive an extended discontinuous reception DRX cycle mode and a timing advance amount update TAU DRX time period mode from a base station; and an extended DRX cycle setting unit And connecting to the mode receiving unit, configured to set an extended DRX cycle of the user equipment according to the extended DRX cycle mode, where the extended DRX cycle includes multiple extended DRX periods, and the multiple extended The extended DRX period in the DRX period is greater than or equal to the timing advance timer TAT of the user equipment; the TAU DRX period setting unit is connected to the mode receiving unit, and is configured to set the user equipment according to the TAU DRX period mode.
  • a transmitting unit connected to the extended DRX cycle setting unit and the TAU DRX period setting unit, for transmitting a sounding reference signal SRS according to a setting of a TAU DRX period;
  • a synchronization unit coupled to the transmitting unit, for waking up from the DRX state during each TAU DRX period, thereby receiving a timing advance TA command from the base station to maintain uplink synchronization.
  • Yet another aspect provides a user equipment, including: extended discontinuous reception
  • a DRX cycle setting unit configured to set an extended DRX cycle, where the extended DRX cycle includes a plurality of extended DRX periods, and each of the plurality of DRX periods is greater than or equal to a timing advance timer of the user equipment
  • a TAT maintenance unit connected to the extended DRX cycle setting unit, for maintaining a first TAT of the user equipment, to send a sounding reference signal SRS to the base station at a third predetermined time before the first TAT timeout
  • a synchronization unit connected to the TAT maintenance unit, for entering a timing advance amount update TAU DRX period after a fourth predetermined time after transmitting the SRS, to stay awake from the DRX state during the active time of the TAU DRX period, thereby
  • the base station receives the timing advance TA command to maintain uplink synchronization
  • a TAT reset unit is coupled to the uplink synchronization unit for resetting the first TAT upon successful decoding of the TA command.
  • a base station including: a receiving unit, configured to receive a sounding reference signal SRS sent from the user equipment; a maintenance and judgment unit, connected to the receiving unit, for maintaining a second timing advance timer TAT of the user equipment, and referring to the second TAT determination Whether the SRS is a sounding reference signal SRS sent by the user equipment at a third predetermined time before the second TAT timeout; an uplink synchronization unit, connected to the maintenance and determination unit, for determining that the SRS is In the case that the user equipment sends the sounding reference signal SRS sent by the third predetermined time before the second TAT timeout, the timing advance amount TA is sent to the user equipment for a fourth predetermined time after receiving the SRS to make The user terminal maintains uplink synchronization; and a TAT reset unit, connected to the uplink synchronization unit, for receiving a TA command sent from the user equipment for a fifth predetermined time after the user equipment successfully decodes the TA command After the response, the second TAT reset unit, connected to
  • a base station including: a receiving unit, configured to receive a sounding reference signal SRS sent by a user equipment; and an uplink synchronization unit, connected to the receiving unit, for receiving, sent by the user equipment
  • the timing advance TA command is transmitted for a fourth predetermined time after the arbitrary SRS or the SRS having the specific identity, so that the user equipment maintains the uplink synchronization.
  • the active time of the extended DRX cycle can be matched with the periodic service characteristics of the user equipment, so as to ensure that the user equipment is in the DRX in the time when no service occurs. In the state, to achieve the effect of power saving.
  • the user equipment by setting the user equipment to enter the TAU DRX period before the TAT timeout, thereby receiving the TA command from the base station during the active time of the TAU DRX period, the uplink synchronization of the user equipment can be maintained at all times.
  • FIG. 1 is a schematic diagram of a two-stage DRX process generally employed in the LTE/LTE-A standard
  • FIG. 2 is a flowchart showing a hybrid discontinuous reception method according to a first embodiment of the present invention
  • 4 is a schematic diagram of an example of a TAU DRX period mode according to a first embodiment of the present invention
  • FIG. 5 is a schematic diagram of another example of a TAU DRX period mode according to the first embodiment of the present invention
  • FIG. 6 is a flowchart of a hybrid discontinuous reception method according to a second embodiment of the present invention
  • FIG. 7 is a flowchart of a hybrid discontinuous reception method according to a third embodiment of the present invention
  • FIG. 8 is a third embodiment of the present invention. Schematic diagram of the TAU DRX period
  • FIG. 9 is a flowchart of a hybrid discontinuous reception method according to a fourth embodiment of the present invention.
  • FIG. 10 is a flowchart of a hybrid discontinuous reception method according to a fifth embodiment of the present invention;
  • FIG. 11 is a diagram according to an embodiment of the present invention. Schematic block diagram of a base station of a hybrid DRX method;
  • FIG. 12 is a schematic block diagram of a user equipment employing a hybrid DRX method according to an embodiment of the present invention;
  • Figure 13 is a schematic block diagram of another user equipment employing a hybrid DRX method in accordance with an embodiment of the present invention.
  • Figure 14 is a schematic block diagram of another base station employing a hybrid DRX method in accordance with an embodiment of the present invention.
  • FIG. 15 is a schematic block diagram of yet another base station employing a hybrid DRX method in accordance with an embodiment of the present invention. detailed description
  • the DRX employed is a combination of a short DRX cycle and a long DRX cycle.
  • the UE configures the DRX function through RRC to shut down most of the transmitting and receiving systems for a predefined period of time.
  • the DRX operation consists of a long DRX cycle, a DRX inactivity timer, a DRX HARQ RTT timer (DRX HARQ (hybrid automatic repeat-request) RTT (round trip time: Loop delay) timer ), DRX retransmission timer (DRX retransmission timer) and optional short DRX
  • the cycle (Short DRX Cycle) and the DRX Short Cycle Timer (Short DRX Cycle timer) are combined.
  • the parameters of the DRX state mainly include:
  • Duration ( 0 n-duration ): The UE wakes up from the DRX state. During the time interval of waiting to receive the PDCCH downlink subframe, if the UE successfully decodes a PDCCH, the UE remains awake and starts the "inactivity timer" (inactivity- Timer ) ". If the UE does not detect the PDCCH within the on-duration time interval, the UE directly enters a sleep state.
  • Inactivity-timer The time interval after the UE successfully decodes the PDCCH after the last successful decoding of the PDCCH, and if the decoding fails, the UE re-enters the DRX. The UE restarts the inactivity timer only after successfully decoding the first transmitted PDCCH (i.e., does not restart for retransmission).
  • Active-time The total time interval in which the UE is in the awake state. Including the "on-duration" of the DRX cycle, the time during which the UE performs continuous reception before the "inactivity-timer” timeout, and the time when the UE waits for downlink retransmission after the HARQ RTT to perform continuous reception. . Based on the above, the minimum “activity time” is equal to “duration” and there is no limit on the maximum time.
  • the lengths of "duration” and “inactivity timer” are usually fixed, and the length of "active time” depends on the scheduling decision of the UE and whether the UE is successfully decoded.
  • FIG. 1 is a schematic diagram of a two-level DRX process commonly employed in the LTE/LTE-A standard.
  • the UE successfully decodes the first transmitted PDCCH, it maintains the "awake” state and starts the "inactive timer” until the "inactivity timer” expires or the UE receives the MAC that re-enters the DRX state ( Media access control: Control message.
  • the UE after the UE re-enters the DRX state, if the short DRX cycle is configured, the UE first follows the short DRX cycle. After the short DRX cycle timer expires, the UE follows the long DRX cycle; otherwise, the UE directly follows the long DRX cycle. cycle.
  • the eNB evolved node base station
  • the uplink synchronization of layer 1 so that it is from multiple UEs.
  • the signal can arrive at the eNB receive window simultaneously.
  • two processes are defined to keep them in sync:
  • the UE ⁇ RACH (ran access channel) process is adopted;
  • the UE ⁇ SRS (sounding reference signal) process is used.
  • the UE uses the RACH procedure to obtain the TA (Time Alignment) through the configuration of the PRACH (physical ran access channel) channel; when the UE has established synchronization, the eNB
  • the TA may be calculated according to the data on the SRS or the physical uplink share channel (PU) channel sent by the UE, and the TA is periodically sent to the UE, so that the UE can always maintain the uplink synchronization, and the eNB uses the MAC control unit to the UE.
  • the form sends an additional MAC time advance command with the MAC payload, ie the TA command.
  • a timer TA alignment timer is set in the UE to detect whether a timing advance is required, that is, before the TAT times out, the UE considers that the uplink synchronization is always maintained, and when After receiving the TA command, the UE restarts the TAT. If the TAT times out, the UE needs to regain the timing advance of the uplink synchronization through the RACH process.
  • the time set by the TAT is greater than the period of the DRX. The UE can only send the SRS during the active time of the DRX, and receive the TA command to restart the TAT. This basically guarantees the DRX sleep time, because no data and SRS are sent. Can always maintain uplink synchronization.
  • the application is mainly for the time when the data is sent and received irregularly, the data packet size is irregular, and even the longest DRX cycle setting is only 2 to 3 seconds. This is to ensure that the data transmission delay is not too large, otherwise it will affect the user experience.
  • the UE may send and receive data with obvious periodicity (the period may be several tens of seconds, several minutes, several tens of minutes, etc.), and the amount of data sent and received is small each time.
  • the UE does not have high requirements for data transmission delay.
  • the above-mentioned two-level DRX process may cause the UE to wake up without the need to send and receive data, which is not conducive to power saving.
  • an embodiment of the present invention provides a hybrid discontinuous reception DRX method for a base station and a user equipment, which can set a mixed DRX cycle for a service cycle characteristic of a user equipment, and can achieve maximum power saving while being able to achieve maximum power consumption. Keep the upstream synchronization of the user equipment.
  • the hybrid discontinuous reception method 10 is implemented by a base station, and includes: 101: configuring an extended discontinuous reception DRX cycle mode, wherein, in the extended DRX cycle mode Configuring an extended DRX cycle, where the extended DRX cycle includes multiple The extended DRX period, the extended DRX period of the plurality of extended DRX periods is greater than or equal to the timing advance timer TAT of the user equipment; 102, configuring the timing advance amount to update the TAU DRX period mode, where In the TAU DRX period mode, a plurality of TAU DRX periods are configured, in the extended DRX period, at the beginning of the first DRX period of the plurality of extended DRX periods or after the start is less than the number of the TAT a first time TAU DRX of the plurality of TAU DRX periods is configured for a pre
  • the extended DRX cycle mode and the TAU DRX time zone mode are configured by the base station and sent to the user equipment, so that the user equipment can set its own extended DRX according to the extended DRX cycle mode and the TAU DRX time zone mode. Period and TAU DRX period. In this way, the user equipment can enter the DRX state or wake up from the DRX state according to the extended DRX cycle.
  • the length of the extended DRX period matches the periodic service characteristics of the UE, and the active time of the extended DRX period corresponds to the periodic service occurrence time of the user equipment, and the user may Wake up in the DRX state, keep "awake, state” to perform the periodic service, and in the case of no periodic service, that is, in the idle time between any two periodic service occurrences, try to ensure entry
  • the DRX state is thus in a "sleep" state. In this way, the user equipment can be guaranteed to be in a "sleep" state for a period of time when no traffic occurs, thereby achieving the effect of power saving. And, due to the time of the extended DRX cycle described above.
  • the user equipment Longer, during which the user equipment's TA is likely to have changed so that the user equipment is difficult to maintain uplink synchronization at all times. Therefore, by setting multiple TAU DRX periods, the user equipment is in the active time of each TAU DRX period. Keep waking up from the DRX state, the user equipment can be in the TAU DRX period above TA command received from the base station within a fixed time so that uplink synchronization is always maintained throughout the extended DRX cycle.
  • the extended DRX cycle mode can be configured accordingly.
  • the DRX period of the embodiment of the present invention mainly includes the length of the DRX period, and holds On-duration, HARQ RTT timer, HARQ retransmission timer.
  • the DRX parameter does not include an inactivity-timer.
  • the UE wakes up to receive the PDCCH at the on-duration time of the DRX.
  • the UE starts the inactivity-timer and enters the continuous receiving state until the inactivity-timer and the HARQ retransmission timer ⁇ After the timeout, the UE ends the active time and enters the DRX sleep state.
  • the inactivity timer is not included in the DRX period, but is continuously received only in the duration of the duration.
  • NACK negative acknowledgement
  • the inactivity timer from the DRX period, the length of time during which the user equipment is in the DRX cycle can be shortened, thereby ensuring that the user equipment is in a maximum sleep state to save power.
  • the length of the inactivity timer can also be shortened in the DRX period instead of directly removing the inactivity timer.
  • the inactivity timer can be removed in some DRX periods while the inactivity timer is retained in other DRX periods.
  • the embodiments of the present invention are not intended to impose any limitation on this.
  • the TAU DRX period may also have a setting as shown in FIG. 3, that is, in the TAU DRX period, mainly including a TAU DRX period length, an on-duration, and a HARQ RTT timer. , HARQ retransmission timer. That is to say, in a certain sense, the TAU DRX period in the embodiment of the present invention is a DRX period only for receiving a TA command by the user equipment, and the parameter type included therein is the same as the parameter type included in the extended DRX period. , but the parameter size settings are different.
  • the TAU DRX period of the embodiment of the present invention does not include an inactivity timer, but also includes other time parameters, such as an on-duration, a HARQ RTT timer, a HARQ retransmission timer, and the like.
  • the time length of other time parameters may be the same as that of the extended DRX period except for the length of time of the duration.
  • the active time of the DRX period is mainly used to receive downlink data
  • the active time of the TAU DRX period is mainly used to receive the TA command, so compared to the DRX period, at the TAU DRX
  • the amount of data received during the time period is smaller, and the length of the active time of the TAU DRX period can be set to be less than the length of the active time of the DRX period, that is, TAU DRX
  • the length of time of the duration of the segment is less than the length of time of the duration of the extended DRX period.
  • the base station transmits the configured extended DRX cycle mode and TAU DRX time zone mode to the user equipment through RRC dedicated signaling.
  • the user equipment when the user equipment is at the active time of the DRX, the user equipment has woken up from the DRX state and there is data and signal interaction with the base station. At this time, when the user equipment enters the active time of the TAU DRX period, its state does not change any more. Therefore, it can be considered that the TAU DRX period at this time does not have any effect and can be ignored. That is to say, in this case, it is not necessary to set various time parameters of the TAU DRX period, such as duration, HARQ RTT timer, HARQ retransmission timer, etc., and the user equipment is not required to be sent before its start time. SRS.
  • the time of any TAU DRX period generally refers to the start time of the active time of the TAU DRX period, that is, the start time of the TAU DRX period.
  • the start time of the active time of the TAU DRX period that is, the start time of the TAU DRX period.
  • other times may also be employed, such as the end time of the active time of the TAU DRX period or the end time of the on-duration time of the active time of the TAU DRX period, etc., and embodiments of the present invention are not intended to be This is subject to any restrictions.
  • the hybrid DRX method of the embodiment of the present invention can be directed to the periodic service characteristics of the MTC described above, but is not limited to the application scenario applied to the MTC class.
  • the hybrid DRX method of the embodiment of the present invention can also be applied to other application scenarios with periodic service characteristics, thereby obtaining maximum power saving while maintaining uplink synchronization of the user equipment by setting the extended DRX cycle and the TAU DRX period. effect.
  • the time of configuring the first TAU DRX period can be guaranteed at the beginning of the first DRX period or after the start of the first predetermined time less than the TAT.
  • the user equipment does not lose uplink synchronization before the first TAU DRX period, that is, ensures that the user equipment can maintain uplink synchronization before reaching the first TAU DRX period after entering the extended DRX cycle to receive the TA command.
  • the user equipment can be maintained for a time between any two adjacent TAU DRX periods.
  • Uplink synchronization by configuring a time difference d between any two adjacent TAU DRX periods of the plurality of TAU DRX periods, at TAT, the user equipment can be maintained for a time between any two adjacent TAU DRX periods.
  • the time difference between the first TAU DRX period in the configured TAU DRX period mode and the start time of the first DRX period and any two adjacent TAUs are defined.
  • the time difference between the DRX periods should be less than the TAT, which is also the most basic condition for the TAU DRX period setting of the embodiment of the present invention.
  • the setting of the TAU DRX period according to an embodiment of the present invention can be further defined.
  • the configuration of the TAU DRX period in each extended DRX period is the same.
  • the setting of the TAU DRX period is repeated in the same manner as the setting of the TAU DRX period in the first DRX period, so that in each DRX period, the TAU DRX period
  • the settings are periodic. For example, assume that the length of each DRX period is 20 subframes, and the length of the TAT is 10 subframes. At this time, if the TAU DRX period is set in the first, sixth, fifteenth, and nineteenth subframes of the first DRX period in the first DRX period, then in each of the following DRX periods, The TAU DRX period is set to the first, sixth, fifteenth, and nineteenth subframes of the DRX period.
  • the time that the user equipment wakes up from the DRX state can be made more regular, thereby facilitating the user's operation.
  • the configuration of the TAU DRX period mode of the base station can also be more regular, thereby facilitating the configuration of the base station.
  • the TAU DRX period in each DRX period of the DRX cycle may be periodic. That is, in the case where the TAU DRX period is configured to be periodic in the extended DRX cycle, the TAU DRX period itself is periodic, and may be independent of the period of the DRX period. For example, assuming that each DRX period has a length of 20 subframes and a TAT has a length of 10 subframes, the period of the TAU DRX period can be configured to be 6 subframes, that is, if the first TAU DRX period is in the first DRX period.
  • the second TAU DRX period is in the 7th subframe
  • the third TAU DRX period is in the 13th subframe
  • the fourth TAU DRX period is in the 19th subframe
  • the fifth TAU DRX period is in the The 5th subframe of the two DRX periods
  • the sixth TAU DRX period is in the 11th subframe of the second DRX period, and so on.
  • the TAU DRX period is configured to be periodic in each DRX period of the extended DRX cycle, it is preferentially ensured that the setting of the TAU DRX period is the same in each DRX period, and additionally guaranteed in each DRX period
  • the setting of the TAU DRX period is also periodic. For example, suppose the length of each DRX period is 20 subframes, and the length of the TAT is 10 sub-frames. frame. At this time, if the period of the TAU DRX period is set to 6 subframes in each DRX period, then, in the first DRX period, the TAU DRX period may be set in the first, seventh, and the first DRX period. The thirteenth and nineteenth subframes.
  • the TAU DRX period is set in the first, seventh, thirteenth, and nineteenth subframes of the DRX period. Also, such an arrangement may make the user device wake up from the DRX state more regularly, thereby facilitating the user's operation.
  • the configuration of the TAU DRX period mode of the base station can also be more regular, thereby facilitating the configuration of the base station.
  • each TAU DRX period of the foregoing user equipment is corresponding to the TAU DRX period mode configured by a certain base station, and details are not described herein again.
  • the user equipment wakes up from the DRX state in the active time of the TAU DRX period to receive the TA command, therefore, in order to secure the user
  • the device wakes up from the DRX state at a predetermined time and needs to be able to locate the start time of the activity time for each TAU DRX period. That is, it is necessary to be able to determine the start time of the activity time of each TAU DRX period according to the configuration of the above TAU DRX period mode.
  • the on-duraiton time, the HARQ RTT timer, the HART retransmission timer, and the like as shown in FIG. 3 are set in the same manner as the DRX cycle in the prior art, and thus Let me repeat.
  • the TAU DRX period mode may be configured to include the plurality of TAU DRX periods The start time of the activity time of each TAU DRX period, such that since the parameter indicating the start time of the activity time of each TAU DRX period has been configured in the TAU DRX period mode, it is determined that the user equipment enters each TAU DRX a start time of the activity time of the time period; further, the TAU DRX time period mode may be configured to include a time when the user equipment corresponding to each of the plurality of TAU DRX periods transmits the SRS, and A case is described in detail.
  • the base station receives the sounding reference signal sent by the user equipment.
  • a TA command is sent to the user equipment after a predetermined time, for example, 1 subframe, and the Often, the predetermined time is fixed.
  • the second predetermined time refers to the time from when the base station receives the SRS sent by the user equipment to the time when the TA command is sent. Therefore, by limiting the time at which the user equipment transmits the SRS, the time at which the base station transmits the TA command is also limited.
  • the user equipment since the user equipment maintains the uplink synchronization by receiving the TA command, the user equipment is required to wake up from the DRX state when the base station transmits the TA command, in order to receive the TA command from the base station. Therefore, by configuring the time at which the user equipment corresponding to each TAU DRX period transmits the SRS in the TAU DRX period mode, the start time of the activity time of the user equipment entering each TAU DRX period can also be determined.
  • the base station calculates the TA according to the data on the SRS or PUSCH channel sent by the user equipment, that is, the base station needs to calculate the TA according to some information carried in the SRS.
  • the base station can also calculate the TA according to other information in the signal carrying the information for calculating the TA, and the embodiment of the present invention is not intended to limit this.
  • the TA command is not sent whenever a signal from the user equipment carrying the data for calculating the TA is received.
  • the user equipment since in the embodiment of the present invention, the user equipment is in the DRX sleep state most of the time, there is no arbitrary signal from the user equipment at this time, so when the base station receives the SRS or other signal, it will know that this is A signal for requesting a TA command to calculate a TA and send a TA command based on information in the SRS or other signals.
  • the base station since the TAU DRX period mode is configured at the base station, the base station itself also knows what the TAU DRX period mode is. Therefore, the base station can also know that the SRS or other signal sent at some time is a signal for requesting the TA command according to the configured TAU DRX period mode, so that the TA command is sent to the user equipment after the second predetermined time.
  • the signal transmission delay between the base station and the user equipment is not considered, that is, the time when the user equipment transmits a certain signal and the time when the base station receives the signal are the same time, and the time when the base station transmits a certain signal and the user equipment The time to receive the signal is also the same time.
  • those skilled in the art can easily apply the method of the embodiment of the present invention to the case of having a signal delay. For example, if the signal delay between the base station and the user equipment is T, the base station should send the SRS after the user equipment sends the SRS.
  • the TA command is sent after the second predetermined time +T, and the user equipment should enter the TAU DRX period within T time after the base station transmits the TA command.
  • the TAU DRX time period mode may include parameters: which consecutive subframes the active time of each TAU DRX period is located, the length of time of each TAU DRX's active time, and the like. Among them, according to an embodiment of the present invention, the most important parameter is which subframe the start time of the active time of each TAU DRX period is located on. As shown in FIG.
  • the start time of the active time of each TAU DRX period is set to be the start of the active time of the extended DRX cycle. Time offsets several subframes.
  • the base station sends the foregoing DRX cycle mode and the TAU DRX time zone mode to the user equipment by using the RRC dedicated signaling, and the user equipment receives the extended DRX cycle mode and the TAU DRX time zone mode, and sets the extended DRX cycle as shown in FIG. 4 and
  • the SRS is transmitted in the Xth uplink subframe before the start of the active time of the TAU DRX, and wakes up during the active time to receive the TA command. It can be understood by those skilled in the art that in FIG. 4, it can also be defined in which subframe the start time of the active time of the TAU DRX is, and for several subframes, and so on.
  • Fig. 5 is a schematic diagram of another example of a TAU DRX period mode according to the first embodiment of the present invention.
  • the mode in which the user equipment transmits the SRS in the extended DRX period that is, the start time of the active time of the DRX period in which the time interval extended by the UE transmitting the SRS is defined is offset by several subframes.
  • the base station sends the foregoing DRX periodic mode and the TAU DRX period mode to the user equipment by using RRC dedicated signaling, and the user equipment receives the extended DRX period and the TAU DRX period mode, and sets an extended DRX cycle as shown in FIG.
  • the base station sends a TA command in the Xth downlink subframe after receiving the SRS, and the UE also wakes up in the Xth downlink subframe after the SRS is sent.
  • the base station sends a TA command in the Xth downlink subframe after receiving the SRS, and the UE also wakes up in the Xth downlink subframe after the SRS is sent.
  • the TAU DRX period Similarly, those skilled in the art can understand that in FIG. 5, it can also be defined in which uplink subframe the user equipment transmits the SRS.
  • FIG. 6 is a flow chart of a hybrid discontinuous reception method in accordance with a second embodiment of the present invention.
  • the hybrid discontinuous reception method 20 according to the second embodiment of the present invention is implemented by a user equipment, and includes: 201. Receive an extended discontinuous reception DRX cycle mode and a timing advance update TAU DRX period mode from a base station. 202.
  • the extended DRX cycle includes multiple extended DRX periods, each of the multiple extended DRX periods
  • the DRX period is greater than or equal to the timing advance timer TAT of the user equipment
  • 203 setting a plurality of TAU DRX periods of the user equipment according to the TAU DRX period mode, where, in the extended DRX period, The first TAU DRX period of the plurality of TAU DRX periods is set at the beginning of the first DRX period in the extended DRX period or at a first predetermined time less than the TAT, and the plurality of TAUs a time difference between any two adjacent TAU DRX periods in the DRX period is less than the TAT; 204, transmitting a sounding reference signal SRS according to the setting of the plurality of TAU DRX periods; and 205, in the plurality of TAU DRX Each TAU DRX period in the period remains awake from the DRX
  • the user equipment can enter or wake up from the DRX state according to the extended DRX cycle.
  • the length of the extended DRX period matches the periodic service characteristics of the UE, and the active time of the extended DRX period corresponds to the periodic service occurrence time of the user equipment, and the user may Wake up in the DRX state, maintain the "awake” state to perform the periodic service, and in the case of no periodic service, that is, in the idle time between any two periodic service occurrences, try to enter the DRX State, thus in a "sleep" state.
  • the user equipment can be guaranteed to be in a "sleep" state for a period of time when no service occurs, thereby achieving the effect of power saving.
  • the TA of the user equipment is likely to have changed during this time, so that it is difficult for the user equipment to always maintain uplink synchronization. Therefore, by setting multiple TAU DRX periods, the user equipment is made. Staying awake from the DRX state during the active time of each TAU DRX period, the user equipment can receive the TA command from the base station during the active time of the TAU DRX period described above to maintain uplink synchronization throughout the extended DRX cycle.
  • the TAU in each extended DRX period can be the same. In this way, the setting of the TAU DRX on the user equipment side can be made more regular, thereby facilitating the operation of the user equipment.
  • the hybrid DRX method according to the second embodiment of the present invention in the hybrid DRX method according to the second embodiment of the present invention, it may be set in the extended DRX cycle or the extended DRX cycle
  • the TAU DRX period in each DRX period is periodic. In this way, the setting of the TAU DRX on the user equipment side can be made more regular, thereby facilitating the operation of the user equipment.
  • the start time of the activity time of each TAU DRX period is included in the TAU DRX period mode, and the user equipment is before the start time of the activity time of each TAU DRX period according to the above parameters.
  • the second predetermined time is sent to the SRS.
  • the time between receiving the SRS signal and transmitting the TA command by the base station is a second predetermined time, so that it can be ensured that when the base station sends a TA command to the user equipment, the user equipment has entered the TAU DRX period and is in the DRX state. wake up.
  • the TAU DRX period mode includes the user equipment corresponding to each TAU DRX period transmitting the SRS, as described in the hybrid DRX method according to the first embodiment of the present invention.
  • the user equipment can transmit the SRS at the time indicated by the above parameters and wake up from the DRX state at the second predetermined time after the time of transmitting the SRS, thereby receiving the timing advance TA command from the base station to maintain the uplink synchronization.
  • the time between the reception of the SRS signal and the transmission of the TA command by the base station is a second predetermined time, thereby ensuring that when the base station transmits a TA command to the user equipment, the user equipment has entered the TAU DRX period and wakes up from the DRX state. .
  • the hybrid DRX method according to the second embodiment of the present invention it is not included in the active time of setting each extended DRX period in the extended DRX cycle. Inactivity timer.
  • the setting of the TAU DRX period is similar to the DRX period, excluding the inactivity timer, and other parameters such as On-duration time, HARQ RTT timer and HARQ retransmission timer are configured in the DRX cycle of the prior art. Similar.
  • the hybrid DRX method according to the second embodiment of the present invention described above corresponds to the hybrid DRX method according to the first embodiment of the present invention described above, and the content described with respect to the hybrid DRX method according to the first embodiment of the present invention may be the same.
  • the present invention is applied to the hybrid DRX method according to the second embodiment of the present invention, and therefore will not be described again here.
  • FIG. 7 is a flow chart of a hybrid discontinuous reception method in accordance with a third embodiment of the present invention.
  • the hybrid discontinuous reception method 30 according to the third embodiment of the present invention is implemented by a user equipment, and includes: 301.
  • the extended DRX cycle includes multiple An extended DRX period, each extended DRX period of the plurality of extended DRX periods being greater than or equal to a timing advance timer TAT of the user equipment; 302, maintaining the first TAT of the user equipment to be at the first Sending a sounding reference signal SRS to the base station at a third predetermined time before the TAT timeout; 303, entering the timing advance amount update TAU after the fourth predetermined time after transmitting the SRS The DRX period, staying awake from the DRX state during the active time of the TAU DRX period, and receiving the timing advance TA command from the base station to maintain uplink synchronization; and 304, resetting the first when the TA command is successfully decoded A TAT.
  • the hybrid DRX method 30 according to the third embodiment of the present invention is different from the hybrid DRX method 20 according to the second embodiment of the present invention described above in that the hybrid DRX method 30 does not configure a fixed extended DRX cycle mode and In the TAU DRX time slot mode, the timeout of the first TAT is monitored on the user equipment side, and the uplink synchronization process of the user equipment is completed before the first TAT timeout, so that the uplink synchronization of the user equipment is always maintained.
  • the first TAT refers to the TAT maintained on the user equipment side.
  • the user equipment can enter or wake up from the DRX state according to the extended DRX cycle.
  • the length of the extended DRX period matches the periodic service characteristics of the UE, and the active time of the extended DRX period corresponds to the periodic service occurrence time of the user equipment, and the user can obtain the DRX from the DRX when the periodic service occurs.
  • Wake up in the state maintain the "awake” state to perform the periodic service, and ensure that the DRX state is entered in the idle time between any two periodic service occurrences without the occurrence of periodic services. , thus being in a "sleep" state.
  • the UE can flexibly select the time to enter the TAU DRX according to the time of the TAT. That is, the start time of the TAU DRX's active time depends on the remaining time of the current TAT. It can be avoided that in the fixed TAU DRX time mode, the UE sends the SRS at a certain time to request the TA command. At this time, the first TAT may just restart, and the TA is not necessary yet. In this way, the operation of the user equipment to maintain the uplink synchronization can be optimized, thereby reducing the burden on the user equipment and further achieving the power saving effect.
  • an expansion may be set.
  • the inactivity timer is not included in each DRX period of the extended DRX cycle, and the inactivity timer is not included in each TAU DRX period, and other parameters in the DRX period and the TAU DRX period may be related to the prior art. Similar settings in the DRX cycle.
  • the third predetermined time should be equal to the sum of the time after the base station receives the SRS until the time when the TA command is transmitted and the time when the user equipment receives the TA command and completes the uplink synchronization process. That is, as described in the first and second embodiments of the present invention, the third predetermined time should be equal to the time at which the base station receives the SRS until the TA command is transmitted (ie, the fourth predetermined time) plus the TAU DRX period. Activity time.
  • the third predetermined time should also add the transmission delay of the SRS from the user equipment side to the base station side and from the base station side to the user equipment side.
  • the transmission delay of the TA command ensures that the user equipment can complete the uplink synchronization process before the TAT times out.
  • the TA command response is transmitted to the base station for a fifth predetermined time after entering the start time of the active time of the TAU DRX period.
  • the uplink synchronization of the user equipment is to be maintained, in addition to ensuring that the user equipment transmits the SRS or other signals for requesting the TA command at the third predetermined time before the TAT expires, it is also necessary to ensure that the base station is receiving.
  • the TA command is sent at a fourth predetermined time after the signal.
  • the base station since the base station does not send a TA command whenever receiving a signal such as an SRS from the user equipment, the base station needs to be able to know that the SRS signal sent by the user equipment at the third predetermined time before the TAT timeout is Used to request a TA command. In order to solve this problem, there are several ways.
  • the second TAT of the user equipment may also be maintained on the base station side, so that when the user equipment sends the SRS for a third predetermined time before the first TAT expires, the base station may know the second TAT according to the maintained user equipment.
  • the SRS is a signal for requesting a TA command.
  • the user equipment since the user equipment resets the first TAT when the TA command is successfully decoded to complete the uplink synchronization, the user equipment also needs to notify the base station of the reset of the first TAT so that the base station side updates the maintained user equipment.
  • the second TAT Based on this, the user equipment transmits a TA command response to the base station for a fifth predetermined time after the start time of the active time entering the TAU DRX period.
  • the second TAT time length of the user equipment maintained by the base station side is smaller than the first TAT time length of the user equipment side. Fifth scheduled time.
  • the TATs on the user equipment side and the base station side are referred to as a first TAT and a second TAT, respectively, but those skilled in the art can understand that both are timing advance timers involving the same user equipment.
  • FIG 8 is a diagram showing a TAU DRX period in accordance with a third embodiment of the present invention.
  • the TAT of the UE is maintained on both sides of the base station and the UE. That is, both the base station and the UE know the running status of the TAT.
  • the UE is configured to send an SRS in the Xth uplink subframe before the TAT timeout.
  • the base station knows that the SRS sent by the UE is used to request the TA command, that is, the TA command is sent in the Yth downlink subframe after the UE sends the SRS.
  • the active time of the TAU DRX starts from this downlink subframe, and the UE enters a sleep state after the TAU DRX activity time ends, until the next time the UE triggers the SRS request TA command to wake up and enters a TAU DRX cycle again.
  • the TAT of the UE side is reset, and after the m subframes, the TA command is sent back to the base station, and the base station receives the TAT after receiving the base station side, so that the TAT time length of the base station side is longer than the time of the UE side.
  • the length is less than m subframes.
  • the configuration of the system is more complicated.
  • the TAT maintained on both sides of the base station and the user equipment are consistent, and the same meaning here means that the TATs on both sides time out at the same time.
  • the above hybrid DRX method can be optimized. For example, only the UE maintains its own TAT, and the base station does not require maintenance. As described above, in order to ensure that the base station can know that the signal is a signal for requesting a TA command to send a TA command to the user equipment when receiving a signal for requesting a TA command, such as an SRS, the base station can adopt the following two methods.
  • the base station can be set to feed back the TA command after the second predetermined time, for example, the Y subframe, after receiving the SRS transmitted during the extended DRX period, thereby ensuring that the user equipment can receive the TA command before the TAT expires.
  • the SRS that is sent by the UE to request the TA command between the extended DRX cycles may be an SRS with a special identifier or a specific classification, so that the base station knows that the SRS is a signal for requesting the TA command after receiving the SRS.
  • the TA command is fed back after the second predetermined time, for example, the Y subframe.
  • the hybrid DRX method 40 is implemented by a base station, and includes: 401. Receiving a sounding reference signal SRS sent from the user equipment; 402, maintaining a second timing advance timer TAT of the user equipment, and determining, by referring to the second TAT, whether the SRS is the user equipment in the SRS transmitted at a third predetermined time before the second TAT expires; 403, in the case that it is determined that the SRS is an SRS sent by the user equipment at a third predetermined time before the second TAT expires, after receiving the SRS a fourth predetermined time after the SRS, the timing advance TA command is sent to the user equipment to cause the user terminal to maintain uplink synchronization; and 404, after receiving the fifth reservation after the user equipment successfully decodes the TA command After the TA command is sent from the user equipment, the second TAT is
  • the second TAT of the user equipment is also maintained on the base station side, so that when the user equipment transmits the SRS for a third predetermined time before the second TAT expires, the base station according to The second TAT of the maintained user equipment knows that the SRS is a signal for requesting a TA command, thereby transmitting a TA command to the user equipment to cause the user equipment to maintain uplink synchronization.
  • the base station since the user equipment resets the first TAT when the TA command is successfully decoded to complete the uplink synchronization, the base station also needs to update the second TAT of the maintained user equipment based on the reset of the first TAT on the user equipment side.
  • the user equipment sends a TA command response to the base station at the start time of the active time entering the TAU DRX period, i.e., after successfully decoding the TA command to complete the uplink synchronization and completing the uplink synchronization.
  • the time for the user equipment to successfully decode the TA command to complete the uplink synchronization is negligible, so that the second TAT time length on the base station side is smaller than the first TAT time length on the user equipment side. The fifth scheduled time.
  • FIG 10 is a flow chart of a hybrid discontinuous reception method in accordance with a fifth embodiment of the present invention.
  • the hybrid DRX method 50 according to the fifth embodiment of the present invention is implemented by a base station, and includes: 501, receiving an arbitrary sounding reference signal SRS sent by a user equipment or an SRS having a specific identifier; 502, receiving any SRS sent by the user equipment or The timing advance TA command is transmitted for a fourth predetermined time after the SRS having the specific identity to assist the user equipment to maintain uplink synchronization.
  • the base station when not maintained on the base station side
  • the base station can set the base station at any time in order to ensure that the base station is aware of the signal used to request the TA command when receiving the signal such as the SRS for requesting the TA command.
  • the base station After receiving the SRS transmitted during the extended DRX cycle, feeding back the TA command after the fourth predetermined time, or setting the SRS transmitted by the UE for requesting the TA command between the extended DRX cycles is an SRS having a special identifier or a specific classification, such that After receiving such an SRS, the base station knows that the SRS is a signal for requesting a TA command, thereby feeding back the TA command after the second predetermined time.
  • the content described with respect to the hybrid DRX method according to the third embodiment of the present invention can also be applied to the hybrid DRX method according to the fifth embodiment of the present invention, and therefore will not be described herein.
  • the active time of the extended DRX cycle can be made to correspond to the periodic service characteristics of the user equipment, thereby maximally ensuring that the user equipment is in the DRX in the time when no service occurs. In the state, to achieve the effect of power saving.
  • the uplink synchronization of the user equipment can be maintained at all times.
  • the base station 60 includes: an extended discontinuous reception DRX cycle mode configuration unit 601, which may be a processor, configured to configure an extended DRX cycle mode, wherein in the extended DRX cycle mode, configuration extension a DRX cycle, the extended DRX cycle includes a plurality of extended DRX periods, and each extended DRX period of the plurality of extended DRX periods is greater than or equal to a timing advance timer TAT of the user equipment; timing advance Updating the TAU DRX period mode configuration unit 602, which may be another processor, configured to configure a TAU DRX period mode, wherein, in the TAU DRX period mode, configuring a plurality of TAU DRX periods in the extended DRX period Configuring a first one of the plurality of TAU DRX periods with a first predetermined time less than the TAT at the beginning of the first
  • the extended DRX cycle mode configuration unit 601 can also be connected with the TAU DRX period mode configuration unit 602 to combine the extended DRX cycle and the TAU DRX period.
  • the extended DRX cycle mode and the TAU DRX time zone mode are configured.
  • the TAU DRX period mode configuration unit 602 is further used in the above base station.
  • the configuration of the TAU DRX period in each extended DRX period is the same.
  • the TAU DRX period mode configuration unit 602 is further configured to configure the TAU DRX period in each of the extended DRX periods or in each of the extended DRX periods to be periodic.
  • the TAU DRX period mode configuration unit 602 is further configured to configure the TAU DRX period mode to include a start time of an activity time of each of the plurality of TAU DRX periods.
  • the TAU DRX period mode configuration unit 602 is further configured to configure the TAU DRX period mode to include a time when the user equipment corresponding to each of the plurality of TAU DRX periods transmits the SRS.
  • the extended DRX periodic mode configuration unit 601 is further configured to configure the activity time of the DRX period of each extension not to include an inactivity timer.
  • the user equipment 70 includes: a mode receiving unit 701, which may be a processor, configured to receive an extended discontinuous reception DRX cycle mode and a timing advance amount update TAU DRX period mode from a base station; an extended DRX cycle setting unit 702, connected to the mode receiving unit 701, configured to set an extended DRX cycle of the user equipment according to the extended DRX cycle mode, where the extended DRX cycle includes multiple extended DRX periods, the multiple extended Each extended DRX period in the DRX period is greater than or equal to the timing advance timer TAT of the user equipment, and the extended DRX cycle setting unit 702 may be another processor; TAU DRX period setting unit 703, may be implemented by a processor, and is connected to the mode receiving unit 701, configured to set, according to the TAU DRX period mode, a plurality of TAU DRX periods of the user equipment,
  • the TAU DRX period setting unit 703 is further configured to set the TAU DRX period in each extended DRX period to be the same based on the TAU DRX period mode.
  • the TAU DRX period setting unit 703 is further configured to set a TAU DRX period in each of the extended DRX periods or in each of the extended DRX periods based on the TAU DRX period mode. It is periodic.
  • the TAU DRX period mode may include a start time of an activity time of each of the plurality of TAU DRX periods.
  • the transmitting unit 704 is further configured to transmit the SRS at a second predetermined time before the start time of the active time of each TAU DRX period.
  • the TAU DRX period mode may include a time when the user equipment corresponding to each of the plurality of TAU DRX periods transmits the SRS.
  • the sending unit 704 is further configured to send the SRS at a time when the user equipment corresponding to each TAU DRX period transmits the SRS, and the uplink synchronization unit 705 is further used for the second predetermined time after the time when the SRS is sent. Wake up from the DRX state, thereby receiving a timing advance TA command from the base station to maintain uplink synchronization.
  • the extended DRX cycle setting unit 702 is further configured to set an inactivity timer in the active time of each extended DRX period in the extended DRX cycle.
  • the user equipment 80 includes: an extended discontinuous reception DRX cycle setting unit 801, which may be a processor, which sets an extended DRX cycle, wherein the extended DRX The period includes a plurality of extended DRX periods, each of the plurality of DRX periods being greater than or equal to a timing advance timer TAT of the user equipment; the TAT maintenance unit 802, which may be another processor, and the extended DRX
  • the period setting unit 801 is connected to maintain the first TAT of the user equipment to send the sounding reference signal SRS to the base station at a third predetermined time before the first TAT timeout;
  • the uplink synchronization unit 803 may be a processor, and the TA
  • the maintenance unit 802 is configured to enter a timing advance amount update TAU DRX period after a fourth predetermined time after transmitting the SRS to keep waking up from the DRX state during the active time
  • the TAT reset unit 804 is further configured to transmit a TA command response to the base station for a fifth predetermined time after the start time of the active time of the TAU DRX period.
  • the sounding reference signal SRS may have a specific identifier to indicate that the base station transmits a TA command for a fourth predetermined time after receiving the SRS with the specific identifier.
  • the extended DRX cycle setting unit 801 is further configured to not include an inactivity timer in each D RX period of the extended D RX cycle.
  • FIG. 14 is a schematic block diagram of another base station employing a hybrid DRX method in accordance with an embodiment of the present invention.
  • the base station 90 includes: a receiving unit 901, which may be a port for receiving a sounding reference signal SRS transmitted from a user equipment; a maintenance and determination unit 902, which may be a processor, and a receiving unit 901, configured to Maintaining a second timing advance timer TAT of the user equipment, and determining, by referring to the second TAT, whether the SRS is a sounding reference signal sent by the user equipment at a third predetermined time before the second TAT timeout
  • An uplink synchronization unit 903, which may be another processor, is connected to the maintenance and determination unit 902, for detecting that the SRS is sent by the user equipment at a third predetermined time before the second TAT expires.
  • a timing advance TA command is transmitted to the user equipment for the user equipment to maintain uplink synchronization for a fourth predetermined time after receiving the SRS; and the TAT reset unit 904 may also be processed And connected to the uplink synchronization unit 903, configured to receive the fifth predetermined time after the user equipment successfully decodes the TA command After the user equipment transmits the TA command of response, resetting the second TAT maintained, wherein the second base station TAT duration time length of the first side of the device-side indoor TAT less than the fifth predetermined time.
  • the base station 100 includes: a receiving unit 1001, which may be a port, for receiving The sounding reference signal SRS sent by the user equipment; and the uplink synchronization unit 1002, which may be a processor, is connected to the receiving unit 1001, and is configured to send a timing after receiving any SRS sent by the user equipment or the SRS with the specific identifier.
  • the TA command is advanced in advance to cause the user equipment to maintain uplink synchronization.
  • the active time of the extended DRX cycle can be made to correspond to the periodic service characteristic of the user equipment, thereby maximizing the time when the user equipment does not have a service. Both are in the DRX state to achieve the effect of power saving. Moreover, by setting the user equipment to enter the TAU DRX period before the TAT timeout, thereby receiving the TA command from the base station during the active time of the TAU DRX period, the uplink synchronization of the user equipment can be maintained at all times.
  • 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.
  • 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 above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included 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. .

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Abstract

La présente invention concerne un procédé de réception discontinue DRX (Discontinuous Reception) mixte, une station de base et un dispositif utilisateur. Le procédé DRX mixte comprend les étapes suivantes : un mode à cycle DRX à réception discontinue étendu est configuré et, dans ce mode de cycle DRX étendu, chaque période DRX étendue est supérieure ou égale à une temporisation d'alignement temporel TAT d'un dispositif utilisateur ; un mode à période DRX de mise à jour d'alignement temporel TAU (Time Alignement Update) est configuré, et une première période DRX TAU est configurée à un premier temps prédéterminé moins le temps TAT correspondant au début de la première période DRX ou commençant après celle-ci, la différence de temps entre deux périodes DRX TAU adjacentes quelconques de multiples périodes DRX TAU étant inférieure à TAT ; le mode de cycle DRX étendu et le mode de période DRX TAU sont envoyés au dispositif utilisateur ; une commande d'alignement temporel TA (Time Alignment) est envoyée au second instant prédéterminé après réception d'un signal de référence de sondage SRS envoyé par le dispositif utilisateur. Le procédé DRX mixte mentionné ci-dessus, la station de base et le dispositif utilisateur peuvent avoir un cycle DRX correspondant à la caractéristique d'un service périodique du dispositif utilisateur, cela permettant en même temps de conserver la synchronisation montante du dispositif utilisateur.
PCT/CN2011/075094 2011-06-01 2011-06-01 Procédé de réception discontinu mixte, station de base et dispositif utilisateur WO2011157159A2 (fr)

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CN2011800009388A CN102257859B (zh) 2011-06-01 2011-06-01 混合非连续接收方法及基站和用户设备

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