WO2014117501A1 - Drx模式的启动方法、用户设备、基站及系统 - Google Patents

Drx模式的启动方法、用户设备、基站及系统 Download PDF

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Publication number
WO2014117501A1
WO2014117501A1 PCT/CN2013/081784 CN2013081784W WO2014117501A1 WO 2014117501 A1 WO2014117501 A1 WO 2014117501A1 CN 2013081784 W CN2013081784 W CN 2013081784W WO 2014117501 A1 WO2014117501 A1 WO 2014117501A1
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Prior art keywords
status report
rrc reconfiguration
received
complete message
reconfiguration complete
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PCT/CN2013/081784
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English (en)
French (fr)
Inventor
王利
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中兴通讯股份有限公司
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Publication of WO2014117501A1 publication Critical patent/WO2014117501A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0225Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0235Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications, and in particular to a method for starting a discontinuous reception (DRX) mode, a user equipment, a base station, and a system.
  • DRX discontinuous reception
  • the DR mode is defined for the power consumption of the user equipment (User Equipment, UE for short).
  • the UE does not need to perform the physical downlink control channel (Physical Downlink Control Channel, PDCCH for short) blind detection in each subframe, which provides conditions for turning off the receiving circuit.
  • PDCCH Physical Downlink Control Channel
  • the active time and the inactive time alternate.
  • the UE enters the Non-active Time after leaving the Active Time.
  • the Active Time is determined according to the DR parameters configured by the Evolved Node B (eNodeB) and the service scheduling.
  • eNodeB Evolved Node B
  • 1 is a schematic diagram of a non-service DR scenario according to the related art.
  • point A is "Start/Restart onDuration Timer" B ⁇ 3 ⁇ 4 "onDuration Timer expires (onDuration Timer timeout)" point.
  • Active Time starts on a periodic basis. When there is no service transmission, it enters the Non-active Time period and needs to wait until the next period to re-enter the Active Time period.
  • the DR configuration parameter is sent by the base station to the UE in a Radio Resource Control (RRC) connection reconfiguration message.
  • the DR configuration parameters include: (onDuration Timer) drx-Inactivity Timer and B drx-Retransmission Timer and so on. When one or more of these timers are running, the UE is considered to be in the Active Time of the DR mode.
  • 2 is a schematic diagram of a DR scenario with services according to the related art. In FIG. 2, A and B are the same as FIG.
  • the onDuration Timer is a periodically started timer
  • the drx-Inactivity Timer is a timer that is started when a new service schedule is received
  • the drx-Retransmission Timer is a HybridAutomatic Repeat Request (HybridAutomatic Repeat Request).
  • a timer set for retransmission scheduling abbreviated as HARQ.
  • the UE After the UE sends a scheduling request (Scheduling Request, SR for short) to the base station to request an uplink grant (UL Grant), and before the SR Pending is not cancelled, the UE is considered to be in the Active Time period.
  • the UE When it is possible to receive the uplink retransmission authorization and the uplink automatic retransmission request buffer (HARQ Buffer) is not empty, the UE is also considered to be in the Active Time period. There is also a specific Active Time period during the random access process.
  • HARQ Buffer uplink automatic retransmission request buffer
  • the UE may not detect the base station.
  • the PDCCH scheduling delivered resulting in loss of service scheduling and subsequent exceptions.
  • the base station can be sure that the UE has received the RRC reconfiguration message sent by the base station, and then starts to start the DR mode.
  • the UE immediately starts the DR mode when receiving the RRC reconfiguration message (with the DR configuration) sent by the base station.
  • FIG. 3 is a schematic diagram of an RRC reconfiguration process and a DR mode startup scenario according to the related art.
  • A, B, and FIG. 1 are the same
  • C, E, and D are the same as FIG.
  • H/J is RRC reconfiguration complete send
  • RRC reconfiguration complete HARQ retransmission (HARQ retransmission)
  • L is RRC reconfiguration received and Start DRX mode (The RRC reconfiguration message receives and starts the DR mode).
  • the UE receives the RRC reconfiguration message at time L, and then starts the DR mode, which happens to enter the onDuration Timer, the onDuration Timer is only 10 milliseconds, and then, the UE Get the uplink authorization DCIO (Downlink Control Information Format 0, referred to as DCI0) at point C, and send a status report and RRC reconfiguration complete message to the base station at point H.
  • the H point fails to send HARQ, and then the HARQ retransmission succeeds at point I.
  • the maximum number of HARQ transmissions is 2 and the Inactivity Timer is only 10 milliseconds. Then, after the I point, the UE enters the non-active time period of the DR mode.
  • the UE also needs to receive a status report of the base station to confirm that the base station has received the RRC reconfiguration complete message.
  • the base station after receiving the RRC reconfiguration complete message, the base station sends a corresponding status report to the UE, but the UE has entered the DRX Non-active period without receiving.
  • the base station starts the DR mode immediately upon receiving the RRC reconfiguration complete message. According to the DR configuration period of 256 milliseconds, the base station waits for more than 230 milliseconds before entering the onDuration Timer period and transmitting a status report to the UE.
  • the UE waits for the status report message of the base station to time out (the timer is 60 milliseconds), triggers the RRC reconfiguration complete message retransmission process (RLC layer retransmission), and the UE sends an SR request authorization at point D and obtains authorization at point E, and then Sending the RRC reconfiguration complete message at point J, it is possible that the J-point HARQ transmission is successful, or the HARQ retransmission is successful at the K-point after the HARQ failure (the HARQ maximum number of transmissions is 2), however, at the K-point UE, the UE enters the DR mode again.
  • Non-active Time Between the timer is 60 milliseconds
  • RLC layer retransmission the RRC reconfiguration complete message retransmission process
  • the UE sends an SR request authorization at point D and obtains authorization at point E, and then Sending the RRC reconfiguration complete message at point J
  • the J-point HARQ transmission is successful
  • the UE may not receive the success in the time between J and K, or the status report falls after the K point; or the base station according to the DR The period and parameter determination are not during Active Time and status reports are not sent. Since the UE still does not receive the status report for the RRC reconfiguration complete message, the UE waits for the status report to time out, and triggers the RRC reconfiguration complete message sending process again, as repeated above (omitted in FIG. 3). When the RLC retransmission deadline is reached, the UE will initiate an RRC reestablishment procedure.
  • the present invention provides a method for starting a DR mode, a user equipment, a base station, and a system to solve at least the above problems.
  • a method for starting a DR mode including: determining whether a status report corresponding to an RRC reconfiguration complete message is received; and if the determination result is yes, starting the DRX mode.
  • determining whether the status report corresponding to the RRC reconfiguration complete message is received includes at least one of: determining, by the radio link control RLC layer, whether the status report is received; determining whether to receive according to the downlink allocation DCI received by the physical layer. Go to the status report; wait for a predetermined time in the RRC reconfiguration process, and determine that the status report is received when the predetermined time arrives.
  • determining, according to the DCI received by the physical layer, whether the status report is received includes one of the following: in a case that the RRC connection is established and the service is not established, the RRC reconfiguration complete message is sent to the network side.
  • a method for starting a DR mode including: sending a status report corresponding to a radio resource control RRC reconfiguration complete message to a UE; and receiving feedback according to the status report by the UE Start DR mode.
  • starting the DR mode according to the feedback condition of the UE to the status report includes one of: receiving a hybrid automatic retransmission HARQ acknowledgement of the status report sent by the UE, starting the DR mode; Performing HARQ automatic retransmission to the case where the UE reports HARQ feedback of the status, and starting the DR mode when the HARQ automatic retransmission reaches a predetermined number of times; when transmitting the status report and/or receiving the RRC heavy The completion of the message is awaiting a predetermined time, and the DR mode is initiated when the predetermined time arrives.
  • a UE including: a determining module, configured to determine whether a status report corresponding to a radio resource control RRC reconfiguration complete message is received; and a startup module is set to be The DR mode is started.
  • the determining module includes at least one of the following: a first determining unit configured to determine, at the radio link control RLC layer, whether the status report is received; and a second determining unit configured to receive the downlink according to the physical layer The DCI is allocated to determine whether the status report is received; the third determining unit is configured to wait for a predetermined time in the RRC reconfiguration process, and determine to receive the status report when the predetermined time arrives.
  • the second determining unit includes at least one of the following: a first determining subunit, configured to send the RRC reconfiguration complete message to the network side after the RRC connection is established and the service is not established, Receiving, when receiving the first downlink new DCI sent by the network side, determining that the status report is received; and determining, by the second determining subunit, that the RRC connection is established and the service is not established, on the network side.
  • a first determining subunit configured to send the RRC reconfiguration complete message to the network side after the RRC connection is established and the service is not established, Receiving, when receiving the first downlink new DCI sent by the network side, determining that the status report is received; and determining, by the second determining subunit, that the RRC connection is established and the service is not established, on the network side.
  • the third determining unit comprises: a first waiting subunit, configured to wait for the predetermined time when receiving the RRC reconfiguration message carrying the DRX configuration parameter; and/or the second waiting subunit, setting When the RRC reconfiguration complete message is sent, the predetermined time is waited; wherein the predetermined time is a preset value or a value indicated by the network side.
  • a DR mode startup system is provided, including any one of the foregoing UEs and any one of the foregoing base stations provided by the embodiments of the present invention.
  • FIG. 1 is a schematic diagram of a non-service DR scenario according to the related art
  • FIG. 2 is a schematic diagram of a DR scenario with service according to the related art
  • FIG. 3 is an RRC reconfiguration process and DR mode startup according to the related art.
  • 4 is a schematic diagram of a system for starting a DR according to an embodiment of the present invention
  • FIG. 5 is a structural block diagram of a base station according to an embodiment of the present invention
  • FIG. 6 is a structural block diagram of a UE according to an embodiment of the present invention
  • FIG. 8 is a flowchart of a method for starting a DR mode of a base station according to an embodiment of the present invention
  • FIG. 9 is a DR mode according to Embodiment 1 of the present invention
  • a schematic diagram of the startup scenario 10
  • FIG. 11 is a flowchart of a UE DR mode startup method according to Embodiment 3 of the present invention
  • FIG. 12 is a UE according to Embodiment 4 of the present invention
  • FIG. 9 is a DR mode according to Embodiment 1 of the present invention
  • a schematic diagram of the startup scenario 10
  • FIG. 11 is a flowchart of a UE DR mode startup method according to Embodiment 3 of the present invention
  • FIG. 12 is
  • FIG. 4 is a schematic diagram of a booting system for a DR according to an embodiment of the present invention. As shown in FIG. 4, the system mainly includes a base station 1 and a UE 2.
  • the base station 1 is configured to send a status report corresponding to the RRC reconfiguration complete message to the UE, and start the DR mode according to the feedback condition of the UE to the status report.
  • the UE 2 is configured to determine whether the status corresponding to the RRC reconfiguration complete message is received. Report and start the DR mode if the result is YES.
  • the base station 1 and the UE 2 may be configured to determine whether to start the DR mode according to a message in the RRC reconfiguration process, or wait for a predetermined time after the RRC reconfiguration starts, and arrive at the predetermined time. When the DR mode is started. Preferred embodiments of the base station 1 and the UE 2 of the embodiments of the present invention are described below.
  • FIG. 5 is a structural block diagram of a base station according to an embodiment of the present invention.
  • the base station 1 mainly includes: a sending module 10 and a starting module 12.
  • the sending module 10 is configured to send a status report corresponding to the RRC reconfiguration complete message to the UE.
  • the initiating module 12 is connected to the sending module 10, and is configured to start the DR mode according to the feedback condition of the UE to the status report.
  • the startup module 12 may include one of the following: a first startup unit, configured to receive a HARQ confirmation of a status report sent by the UE, to initiate a DR mode; and a second activation unit configured to be in Performing HARQ automatic retransmission without receiving HARQ feedback from the UE for status reporting, starting most DR mode when HARQ automatic retransmission reaches a predetermined number of times; third starting unit, set to transmit status report and/or receive
  • the RRC reconfiguration complete message waits for a predetermined time, and when the predetermined time arrives, the DR mode is started.
  • the predetermined time may be set according to the network signal quality. For example, if the network signal quality is good, a shorter waiting time may be set. If the network signal quality is poor, a longer waiting time may be set.
  • FIG. 6 is a structural block diagram of a UE according to an embodiment of the present invention.
  • the UE 2 mainly includes: a determining module 20 and a starting module 22.
  • the determining module 20 is configured to determine whether a status report corresponding to the RRC reconfiguration complete message is received.
  • the startup module 22 is connected to the determining module 20, and is set to start the DR mode if the determination result is yes.
  • the determining module 20 may be configured to determine whether the status report is received at the RLC layer or the physical layer.
  • the judging module 20 may be configured to wait for a predetermined time after the RRC reconfiguration starts, and determine that the RRC reconfiguration is completed when the predetermined time arrives.
  • the determining module 20 may include: a first determining unit, configured to determine whether a status report is received at the RLC layer; and a second determining unit configured to determine whether the status report is received according to the DCI received by the physical layer; And being set to wait for a predetermined time in the RRC reconfiguration process, and determining to receive the status report when the predetermined time arrives.
  • the second determining unit includes one of the following: the first determining subunit, configured to send the RRC reconfiguration to the network side in the case that the RRC connection is established and the service is not established.
  • the second determining subunit is set to be in the case of the RRC connection establishment and the service is not established, on the network side.
  • a third determination subunit configured to: after the RRC connection establishment is established and the service is not established, after receiving the RRC reconfiguration complete message to the network side, when receiving the first new DCI sent by the network side, And receiving the corresponding hybrid automatic retransmission HARQ acknowledgement of the RRC reconfiguration complete message, determining to receive the status report; the fourth acknowledgement subunit, being set after the RRC connection is established If the service is not established, after the RRC reconfiguration complete message is sent to the network side, the uplink HARQ success indication is detected. When the uplink HARQ success indication is detected, when the DCI newly transmitted by the network side is received, the received status is determined. report.
  • the third determining unit includes: a first waiting subunit, configured to wait for a predetermined time when receiving the RRC reconfiguration message carrying the DR configuration parameter; and/or, And waiting for the predetermined time, wherein the predetermined time is a preset value or a value indicated by the network side.
  • the DR mode is started when the scheduled time expires.
  • a startup method corresponding to the base station, the UE, and the DR mode further provides a DR mode startup method.
  • FIG. 7 is a flowchart of a method for starting a DR mode of a UE according to an embodiment of the present invention. As shown in FIG. 7, the method includes steps S702 to S704.
  • Step S702 determining whether a status report corresponding to the RRC reconfiguration complete message is received.
  • Step S704 in the case where the determination result is YES, the DR mode is started.
  • whether the status report is received may be determined by, but not limited to, at least one of the following manners: determining whether the status report is received at the RLC layer; determining whether the DCI is received according to the physical layer Receiving the above status report; waiting for a predetermined time in the RRC reconfiguration process, and determining to receive the status report when the predetermined time arrives.
  • determining whether the status report is received according to the DCI received by the physical layer may include one of the following: 1) after the RRC connection is established and the service is not established. After receiving the RRC reconfiguration complete message to the network side, when receiving the first downlink new DCI sent by the network side, determining to receive the status report;
  • FIG. 8 is a flowchart of a method for starting a DR mode of a base station according to an embodiment of the present invention. As shown in FIG.
  • the method includes steps S802 to S804.
  • Step S802 sending a status report corresponding to the RRC reconfiguration complete message to the UE.
  • Step S804 starting the DR mode according to the feedback condition of the UE to the status report.
  • the DR mode may be initiated by, but not limited to, by one of the following methods: 1) receiving a HARQ acknowledgement of a status report sent by the UE, starting the DR mode; 2) not receiving The UE performs HARQ automatic retransmission in the case of HARQ feedback of the status report, and initiates the majority DR mode when the HARQ automatic retransmission reaches a predetermined number of times; 3) waits for a predetermined time when transmitting the status report and/or receiving the RRC reconfiguration complete message , Start DR mode when the scheduled time arrives.
  • plan 1 The respective aspects of the above method of the embodiment of the present invention are separately described below.
  • the UE receives the RRC reconfiguration message sent by the base station and the DR configuration parameter carried by the UE, and sends an RRC reconfiguration complete message to the base station.
  • the DR mode is started.
  • the base station sends the status report to the UE.
  • the base station After the base station sends the status report and receives the HARQ acknowledgment (HARQ ACK) sent by the UE for the status report, the base station starts the DR mode.
  • HARQ ACK HARQ acknowledgment
  • the UE receives the RRC reconfiguration message sent by the base station and the DR configuration parameter carried by the UE, and sends an RRC reconfiguration complete message to the base station. After the UE sends the RRC reconfiguration complete message, when the first DCI is received, the DR mode is started. or,
  • the UE After receiving the DR configuration parameter, the UE starts the DR mode when it receives the first newly transmitted DCI. Or After receiving the DR configuration parameter, the UE starts the DR mode after receiving the first newly transmitted DCI after the subsequent uplink transmission succeeds (upstream HARQ success).
  • the base station After receiving the RRC reconfiguration complete message, the base station sends the status report to the UE. After the base station sends the status report and receives the HARQ acknowledgment (HARQ ACK) sent by the UE for the status report, the base station starts the DR mode.
  • HARQ ACK HARQ acknowledgment
  • the base station After the base station sends the foregoing status report, if the HARQ ACK for the status report is not received, the base station performs a HARQ retransmission process until the retransmission succeeds or the number of retransmissions reaches the maximum number of HARQ retransmissions, and the base station starts the DR mode.
  • the UE receives the RRC reconfiguration message sent by the base station and the DR configuration parameters carried by the UE, and sends an RRC reconfiguration complete message to the base station.
  • the UE When the UE receives the DR configuration parameter and/or sends an RRC reconfiguration complete message, it waits for a timing length X to start the DR mode.
  • the base station After receiving the RRC reconfiguration complete message, the base station sends a status report corresponding to the RRC reconfiguration complete message to the UE. After the base station sends the above status report, it waits for a timing length Y to start the DR mode. Alternatively, after transmitting the RRC reconfiguration message, the base station waits for a timing length Y to start the DR mode. Alternatively, after receiving the RRC reconfiguration complete message, the base station waits for a timing length Y to start the DRX mode.
  • the time length X is a default value, or the base station notifies the UE of the timing length X in the DR configuration parameter of the RRC reconfiguration message.
  • the above-mentioned time length Y is a default value, or is determined according to the timing length X notified by the base station to the UE.
  • Embodiment 1 As shown in FIG. 1 , in the DR mode, when there is no service, Active Time and Non-active Time alternate, and Active Time starts in a cycle. The UE receives the data sent by the base station only during the Active Time; does not receive the data sent by the base station during the non-active time, and does not detect the PDCCH.
  • the time between the two points of AB is Active Time, which is the time when the onDuration Timer configured by the base station is running.
  • Active Time is the time when the onDuration Timer configured by the base station is running.
  • the Active Time is further extended, specifically, the Inactivity Timer running time, and the value of the Inactivity Timer is variable.
  • the shortest is 1 millisecond.
  • the uplink grant may be applied to the base station by sending the SR to send the uplink data.
  • the UE sends an SR to the base station, and the E arrow receives the uplink grant (PDCCH with DCIO) of the base station.
  • the E arrow is at the Active Time and is delayed to the F arrow (the Inactivity Timer is stopped), after which the UE enters the Non-active Time period until The next DR period, during which data sent by the base station is not received.
  • the maximum number of uplink HARQ transmissions is 1, indicating only the SR process. As shown in FIG.
  • the UE receives the RRC reconfiguration message at the time L, starts the DR mode, and sends a status report (an RRC reconfiguration message corresponding to the base station) and an RRC reconfiguration complete message at the H time; After the HARQ retransmission is performed on the RRC reconfiguration complete message at the time I, the DRX Non-active Time period is entered. Since the UE does not receive the status report for the RRC reconfiguration complete message, after waiting for the timeout, the SR application authorization is sent at point D, and the RRC reconfiguration complete message is resent at point J.
  • FIG. 9 is a schematic diagram of a DR mode startup scenario according to Embodiment 1 of the present invention.
  • a and B are the same as FIG. 1, C is a Found a UL Grant, and H is an RRC reconfiguration complete send.
  • RRC reconfiguration completes transmission I is RRC reconfiguration complete HARQ retransmission
  • L is RRC reconfiguration received
  • M Status report Received and start DRX mode Status report and start DR mode).
  • the difference from FIG. 3 is that the DRX mode is not started at the time L, and after the HARQ retransmission of the RRC reconfiguration complete message is performed at the time I, the state of the receiving base station is awaited. report. Then, when receiving the status report delivered by the base station at point M, the DR mode is started.
  • Example 2 10 is a schematic diagram of a DR mode startup scenario according to Embodiment 2 of the present invention.
  • a and B are the same as FIG. 1, C is Found a UL GrantC and found a UL Grant), and G is an Inactivity Timer expires (Inactivity).
  • H is RRC reconfiguration complete send
  • I is RRC reconfiguration complete HARQ retransmission
  • L is RRC reconfiguration received (connected to t
  • N Received DL assignment (DCI)
  • start DRX mode (received DCI, start DR mode).
  • the difference from FIG. 3 is that the DRX mode is not started at the time L, and the HARQ retransmission of the RRC reconfiguration complete message is performed at the time I, and is received at the N point.
  • the downlink new assignment (new DCI) delivered by the base station is started, the DR mode is started and the DRX Inactivity Timer is started.
  • Example 3 was taken as an embodiment of Scheme 2.
  • 11 is a flowchart of a method for starting a DR mode of a UE according to Embodiment 3 of the present invention. As shown in FIG. 11, the method includes steps S1102 to S1112:
  • the UE receives the RRC reconfiguration message from the base station (carrying the DR configuration);
  • the UE MAC indicates that the uplink HARQ transmission is successful
  • FIG. 12 is a flowchart of a method for starting a DR mode of a UE according to Embodiment 4 of the present invention. As shown in FIG. 12, the method includes steps S1202 to S1208: Step S1202, the UE receives an RRC reconfiguration message of the base station (carrying DR configuration); Step S1204, start DR timer X; Step S1206, DR timer X is super; Step S1208, start DR mode.
  • Step S1302 the base station is transmitting an RRC reconfiguration message ( Carrying the DR configuration); Step S1304, starting the DR timer Y; Step S1306, the DR timer Y times out; Step S1308, starting the DR mode.
  • the timer X duration and the timer Y duration are equal or Y is less than X, and the UE is guaranteed to start the DR mode no earlier than the base station.
  • the foregoing solution of the embodiment of the present invention enables the UE and the base station to start the DR mode at a suitable timing and achieve coordination, thereby avoiding RRC reconfiguration.
  • the process and subsequent exceptions can also avoid retransmission of unnecessary RRC reconfiguration completion messages and power consumption caused by the UE not receiving the status report during this process.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
  • the computing device may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. Perform the steps shown or described, or separate them into individual integrated circuit modules, or Multiple of these modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Abstract

本发明公开了一种DRX模式的启动方法、用户设备、基站及系统,其中,该方法包括:判断是否接收到RRC重配完成消息对应的状态报告;在判断结果为是的情况下启动DRX模式。应用本发明,使UE和基站在合适的时机启动DRX模式并达到协调一致,进而避免RRC重配过程及后续异常,也能避免在RRC重配过程中,由于UE没有接收到状态报告,导致的不必要的RRC重配完成消息的重发和电能消耗。

Description

DRX模式的启动方法、 用户设备、 基站及系统 技术领域 本发明涉及通信领域, 具体而言, 涉及一种非连续接收(Discontinuous Reception, 简称为 DRX) 模式的启动方法、 用户设备、 基站及系统。 背景技术 在长期演进 (Long Term Evolution, 简称为 LTE) 系统中, 为了用户设备 (User Equipment, 简称为 UE) 省电, 定义了 DR 模式。 在 DR 模式下, UE不必每个子 帧都进行物理下行控制信道 (Physical Downlink Control Channel, 简称为 PDCCH) 盲 检测, 为关闭接收电路提供了条件。 在 DR 模式下, 活跃期(Active Time)和非活跃期(Non-active Time)交替存在,
UE离开 Active Time就进入 Non-active Time。 在 DR 模式下, UE仅仅需要在 Active Time期间进行 PDCCH盲检测。 Active Time是根据演进型基站 (Evolved Node B, 简 称为 eNodeB)配置的 DR 参数以及业务调度的情况来确定的。 图 1是根据相关技术 的无业务的 DR 场景的示意图, 在图 1中, A点为" Start/Restart onDuration Timer (启 动 /重启 onDuration Timer) " B ^¾ "onDuration Timer expires ( onDuration Timer超 时)"点。如图 1所示, Active Time按周期启动,当没有业务传输时进入 Non-active Time 期间, 并需要等到下一个周期才能重新进入 Active Time期间。 在相关技术中, DR 配置参数是基站在无线资源控制 (Radio Resource Control, 简称为 RRC)连接重配消息中发送给 UE的。 DR 配置参数包括: (onDuration Timer ) drx-Inactivity Timer禾 B drx-Retransmission Timer等等。 当这几个定时器中有一个或多 个定时器在运行时, 认为 UE处于 DR 模式的 Active Time期间。 图 2是根据相关技术的有业务的 DR 场景的示意图, 在图 2中, A和 B与图 1 相同, C/E表示" Found a PDCCH, then Start/Restart InactivityTimer (发现 PDCCH, 启 动或重启 InactivityTimer) ", D为 SR send ( SR发送), F为 InactivityTimer expires (InactivityTimer超时)。 如图 2所示, onDuration Timer是周期性启动的定时器, drx-Inactivity Timer是接 收到新业务调度时启动的定时器, drx-Retransmission Timer是为接收下行混合自动重 传请求(HybridAutomatic Repeat Request, 简称为 HARQ)重传调度而设置的定时器。 另外,当 UE发送调度请求(Scheduling Request,简称为 SR)向基站请求上行授权(UL Grant) 后, 且在 SR Pending没有取消前, 认为 UE处于 Active Time期间。 当有可能 接收到上行重传授权并且上行自动重传请求缓冲区 (HARQ Buffer) 非空时, 也认为 UE处于 Active Time期间。 在随机接入过程中也有特定的 Active Time期间。 在相关技术中, 基于上面描述的 DR 定义和 DR 配置下发方式, 可能存在基站 和 UE启动 DR 模式的时机不同,当基站没有进入 DR 模式而 UE进入 DR 模式时, 可能存在 UE不去检测基站下发的 PDCCH调度, 导致业务调度丢失以及后续的异常。 例如, 基站在收到 UE的 RRC重配完成消息时, 可以明确 UE已经收到了基站下 发的 RRC重配消息, 于是开始启动 DR 模式。而 UE在接收到基站下发的 RRC重配 消息 (携带 DR 配置) 时立即启动了 DR 模式。 图 3是根据相关技术的 RRC重配过程和 DR 模式启动场景的示意图,在图 3中, A、 B禾口图 1相同, C、 E以及 D与图 2相同, F/G为 Inactivity Timer expires (Inactivity Timer超时), H/J为 RRC reconfiguration complete send (RRC重配置完成消息发送), I/K为 RRC reconfiguration complete HARQ retransmission (RRC重配置完成消息的 HARQ重传), L为 RRC reconfiguration received and start DRX mode ( RRC重配置消息 接收并启动 DR 模式)。 在上面这种应用场景及策略下, 如图 3所示, UE在 L时刻收到 RRC重配消息, 随即启动了 DR 模式, 恰巧进入到 onDuration Timer期间, 这个 onDuration Timer只 有 10毫秒,接着, UE在 C点拿到上行授权 DCIO (Downlink Control Information format 0, 简称为 DCI0), 并在 H点向基站发送状态报告和 RRC重配完成消息, H点发送 HARQ失败,然后在 I点 HARQ重发成功, HARQ最大发送次数为 2且 Inactivity Timer 只有 10毫秒, 那么 UE在 I点后就进入到 DR 模式的 Non-active Time期间。 然而, 此时 UE还需要接收基站的状态报告以确认基站收到了 RRC重配完成消息。 如上场景, 在基站侧, 基站收到 RRC重配完成消息后, 向 UE发送相应的状态报 告, UE却已经进入 DRX Non-active期间而没有去接收。 或者, 基站在收到 RRC重配 完成消息时立即启动 DR 模式, 根据 DR 配置周期 256毫秒, 基站要等待 230多毫 秒才能够进入到 onDuration Timer期间并发送状态报告给 UE。 于是, UE等待基站的 状态报告消息超时 (定时器为 60毫秒), 触发 RRC重配完成消息重发过程 (RLC层 重发), UE在 D点发送 SR请求授权并在 E点获得授权,接着在 J点发送 RRC重配完 成消息,可能 J点 HARQ发送成功,或者 HARQ失败后在 K点 HARQ重发成功(HARQ 最大发送次数为 2), 无论怎样, 在 K点 UE又进入到 DR 模式的 Non-active Time期 间。 若基站收到 J点发送的 RRC重配完成消息后, 下发状态报告, UE有可能在 J到 K之间的时间里未接收成功, 或者状态报告落在了 K点之后; 或者基站根据 DR 周 期和参数确定不在 Active Time期间, 不发送状态报告。 由于 UE依然未接收到针对 RRC重配完成消息的状态报告, UE等待状态报告超 时,再次触发 RRC重配完成消息发送过程,如上重复(示意图 3中省略)。当达到 RLC 重传超限次数时, UE将发起 RRC重建过程。 从以上例子看到, 由于 UE和基站在首次启动 DR 模式的时机不恰当, 导致 UE 不能及时接收到基站下发的针对 RRC重配完成消息的状态报告,从而引发 UE重复发 送 RRC重配完成消息而导致不必要的耗电, 甚至引起 RLC重传超限及 RRC重建。 发明内容 针对相关技术中的 DR 模式的启动时机不恰当的问题, 本发明实施例提供了一 种 DR 模式的启动方法、 用户设备、 基站及系统, 以至少解决上述问题。 根据本发明实施例的一个方面, 提供了一种 DR 模式的启动方法, 包括: 判断 是否接收到 RRC重配完成消息对应的状态报告; 在判断结果为是的情况下启动 DRX 模式。 优选地, 判断是否接收到 RRC重配完成消息对应的状态报告包括以下至少之一: 在无线链路控制 RLC层判断是否接收到所述状态报告;根据物理层接收到的下行分配 DCI判断是否接收到所述状态报告; 在 RRC重配过程中等待预定时间, 在所述预定时 间到达时确定接收到所述状态报告。 优选地, 根据物理层接收到的 DCI判断是否接收到所述状态报告包括以下之一: 在 RRC连接建立之后且未建立业务的情形下, 在向所述网络侧发送所述 RRC重配完 成消息后, 接收到所述网络侧发送的第一个下行新传 DCI时, 确定接收到所述状态报 告; 在 RRC连接建立之后且未建立业务的情形下, 在向所述网络侧发送所述 RRC重 配完成消息后, 接收到所述网络侧发送的第一个新传 DCI时, 且在发送所述 RRC重 配完成消息后到接收新传 DCI之间未收到过下行重传 DCI,确定接收到所述状态报告; 在 RRC连接建立之后且未建立业务的情形下, 在向所述网络侧发送所述 RRC重配完 成消息后, 接收到所述网络侧发送的第一个新传 DCI时, 且已接收到所述 RRC重配 完成消息的相应的混合自动重传 HARQ确认, 确定接收到所述状态报告; 在 RRC连 接建立之后且未建立业务的情形下, 在向所述网络侧发送所述 RRC重配完成消息后, 检测上行 HARQ成功指示, 在检测到所述上行 HARQ成功指示的情况下, 接收到所 述网络侧新传输的 DCI时, 确定接收到所述状态报告; 优选地, 在 RRC重配过程中等待预定时间, 包括: 在接收到携带有 DR 配置参 数的 RRC重配消息时和 /或发送 RRC重配完成消息时, 等待所述预定时间, 其中, 所 述预定时间为预设值或所述网络侧指示的值。 根据本发明实施例的另一个方面, 提供了一种 DR 模式的启动方法, 包括: 向 UE发送无线资源控制 RRC重配完成消息对应的状态报告; 根据所述 UE对所述状态 报告的反馈情况启动 DR 模式。 优选地, 根据所述 UE对所述状态报告的反馈情况启动 DR 模式包括以下之一: 接收所述 UE发送的所述状态报告的混合自动重传 HARQ确认, 启动所述 DR 模式; 在没有接收到所述 UE对所述状态报告的 HARQ反馈的情况下进行 HARQ自动重发, 在所述 HARQ自动重发达到预定次数时启动 DR 模式; 在发送所述状态报告时和 /或 接收到 RRC重配完成消息时等待预定时间, 在所述预定时间到达时启动所述 DR 模 式。 根据本发明实施例的另一个方面, 提供了一种 UE, 包括: 判断模块, 设置为判断 是否接收到无线资源控制 RRC重配完成消息对应的状态报告; 启动模块, 设置为在判 断结果为是的情况下启动 DR 模式。 优选地, 所述判断模块包括以下至少之一: 第一判断单元, 设置为在无线链路控 制 RLC层判断是否接收到所述状态报告; 第二判断单元, 设置为根据物理层接收到的 下行分配 DCI判断是否接收到所述状态报告; 第三判断单元, 设置为在 RRC重配过 程中等待预定时间, 在所述预定时间到达时确定接收到所述状态报告。 优选地, 所述第二判断单元包括以下至少之一: 第一确定子单元, 设置为在 RRC 连接建立之后且未建立业务的情形下,在向网络侧发送所述 RRC重配完成消息后,接 收到所述网络侧发送的第一个下行新传 DCI时, 确定接收到所述状态报告; 第二确定 子单元, 设置为在 RRC 连接建立之后且未建立业务的情形下, 在向网络侧发送所述 RRC重配完成消息后, 接收到所述网络侧发送的第一个新传 DCI 时, 且在发送所述 RRC重配完成消息后到接收新传 DCI之间未收到过下行重传 DCI,确定接收到所述状 态报告; 第三确定子单元, 设置为在 RRC连接建立之后且未建立业务的情形下, 在向 所述网络侧发送所述 RRC重配完成消息后,接收到所述网络侧发送的第一个新传 DCI 时, 且已接收到所述 RRC重配完成消息的相应的混合自动重传 HARQ确认, 确定接 收到所述状态报告; 第四确认子单元, 设置为在 RRC连接建立之后且未建立业务的情 形下, 在向所述网络侧发送所述 RRC重配完成消息后, 检测上行 HARQ成功指示, 在检测到所述上行 HARQ成功指示的情况下,接收到所述网络侧新传输的 DCI时,确 定接收到所述状态报告。 优选地, 所述第三判断单元包括: 第一等待子单元, 设置为在接收到携带有 DRX 配置参数的 RRC重配消息时, 等待所述预定时间; 和 /或第二等待子单元, 设置为在 发送 RRC重配完成消息时, 等待所述预定时间; 其中, 所述预定时间为预设值或所述 网络侧指示的值。 根据本发明实施例的又一个方面, 提供了一种 DR 模式的启动系统, 包括本发 明实施例提供的上述任一 UE和本发明实施例提供的上述任一基站。 通过本发明实施例,判断是否接收到 RRC重配完成消息对应的状态报告,在判断 结果为是的情况下启动 DR 模式, 避免了在 RRC重配过程中, 由于 UE没有接收到 状态报告, 导致的不必要的 RRC重配完成消息的重发和电能消耗, 避免了 DR 模式 启动时机不恰当的问题。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中- 图 1是根据相关技术的无业务的 DR 场景的示意图; 图 2是根据相关技术的有业务的 DR 场景的示意图; 图 3是根据相关技术的 RRC重配过程和 DR 模式启动场景的示意图; 图 4是根据本发明实施例的 DR 的启动系统的示意图; 图 5是根据本发明实施例的基站的结构框图; 图 6是根据本发明实施例的 UE的结构框图; 图 7是根据本发明实施例的 UE的 DR 模式的启动方法的流程图; 图 8是根据本发明实施例的基站的 DR 模式的启动方法的流程图; 图 9是根据本发明实施例 1的 DR 模式启动场景的示意图; 图 10是根据本发明实施例 2的 DR 模式启动场景的示意图; 图 11是根据本发明实施例 3的 UE的 DR 模式的启动方法的流程图; 图 12是根据本发明实施例 4的 UE的 DR 模式的启动方法的流程图; 以及 图 13是根据本发明实施例 4的基站的 DR 模式的启动方法的流程图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 根据本发明实施例, 提供了一种 DR 模式的启动系统。 图 4是根据本发明实施例的 DR 的启动系统的示意图, 如图 4所示, 该系统主 要包括基站 1和 UE 2。 其中, 基站 1, 设置为向 UE发送 RRC重配完成消息对应的状 态报告, 并根据 UE对状态报告的反馈情况启动 DR 模式; UE 2, 设置为判断是否接 收到 RRC重配完成消息对应的状态报告,并在判断结果为是的情况下启动 DR 模式。 在本发明实施例的一个实施方式中, 基站 1和 UE 2可以设置为根据 RRC重配过 程中的消息判断是否启动 DR 模式, 或者, 在 RRC重配开始后等待预定时间, 在该 预定时间到达时, 启动 DR 模式。 下面对本发明实施例的基站 1和 UE 2的优选实施方式进行描述。
(一) 基站 1 图 5是根据本发明实施例的基站的结构框图, 如图 5所示, 基站 1主要包括: 发 送模块 10和启动模块 12。 其中, 发送模块 10, 设置为向 UE发送 RRC重配完成消息 对应的状态报告; 启动模块 12, 与发送模块 10相连接, 设置为根据 UE对状态报告的 反馈情况启动 DR 模式。 在本发明实施例中的一个实施方式中, 启动模块 12可以包括以下之一: 第一启动 单元, 设置为接收 UE发送的状态报告的 HARQ确认, 启动 DR 模式; 第二启动单 元,设置为在没有接收到 UE对状态报告的 HARQ反馈的情况下进行 HARQ自动重发, 在 HARQ 自动重发达到预定次数时启动多数 DR 模式; 第三启动单元, 设置为在发 送状态报告时和 /或接收到 RRC重配完成消息时等待预定时间, 在该预定时间到达时 启动 DR 模式。 在实际应用中, 可以根据网络信号质量设置上述预定时间, 例如, 网络信号质量 较好, 则可以设置较短的等待时间, 如果网络信号质量较差, 则可以设置较长的等待 时间。
(二) UE 2 图 6是根据本发明实施例的 UE的结构框图, 如图 6所示, UE 2主要包括: 判断 模块 20和启动模块 22。其中, 判断模块 20, 设置为判断是否接收到 RRC重配完成消 息对应的状态报告; 启动模块 22, 与判断模块 20相连接, 设置为在判断结果为是的 情况下启动 DR 模式。 在本发明实施例中, 判断模块 20可以设置为在 RLC层或物理层判断是否接收到 上述状态报告。 或者, 判断模块 20可以设置为在 RRC重配开始后等待预定时间, 在 该预定时间到达时确定 RRC重配完成。 因此, 判断模块 20可以包括: 第一判断单元, 设置为在 RLC层判断是否接收到状态报告; 第二判断单元, 设置为根据物理层接到的 DCI判断是否接收到状态报告; 第三判断单元, 设置为在 RRC重配过程中等待预定时 间, 在预定时间到达时确定接收到状态报告。 在本发明实施例的一个优选实施方式中, 第二判断单元包括以下之一: 第一确定子单元, 设置为在 RRC连接建立之后且未建立业务的情形下,在向网络 侧发送 RRC重配完成消息后, 接收到网络侧发送的第一个下行新传 DCI时, 确定接 收到状态报告; 第二确定子单元, 设置为在 RRC连接建立之后且未建立业务的情形下,在向网络 侧发送 RRC重配完成消息后,接收到网络侧发送的第一个新传 DCI时,且在发送 RRC 重配完成消息后到接收新传 DCI之间未收到过下行重传 DCI, 确定接收到状态报告; 第三确定子单元, 设置为在 RRC连接建立之后且未建立业务的情形下,在向网络 侧发送 RRC重配完成消息后, 接收到网络侧发送的第一个新传 DCI时, 且已接收到 RRC重配完成消息的相应的混合自动重传 HARQ确认, 确定接收到状态报告; 第四确认子单元, 设置为在 RRC连接建立之后且未建立业务的情形下,在向网络 侧发送 RRC重配完成消息后, 检测上行 HARQ成功指示, 在检测到上行 HARQ成功 指示的情况下, 接收到网络侧新传输的 DCI时, 确定接收到状态报告。 在本发明实施例的一个优选实施方式中, 第三判断单元包括: 第一等待子单元, 设置为在接收到携带有 DR 配置参数的 RRC重配消息时, 等待预定时间; 和 /或, 第 二等待子单元, 设置为在发送 RRC重配完成消息时, 等待预定时间; 其中, 预定时间 为预设值或所述网络侧指示的值。 在预定时间超时时, 启动 DR 模式。 根据本发明实施例, 对应于上述基站、 UE及 DR 模式的启动系统, 还提供了一 种 DR 模式的启动方法。 图 7是根据本发明实施例的 UE的 DR 模式的启动方法的流程图, 如图 7所示, 该方法包括步骤 S702至步骤 S704。 步骤 S702, 判断是否接收到 RRC重配完成消息对应的状态报告。 步骤 S704, 在判断结果为是的情况下启动 DR 模式。 在本发明实施例的一个优选实施方式中, 可以通过但不限于以下方式至少之一判 断是否接收到上述状态报告: 在 RLC层判断是否接收到上述状态报告; 根据物理层接 收到的 DCI判断是否接收到上述状态报告; 在 RRC重配过程中等待预定时间, 在预 定时间到达时确定接收到状态报告。 优选的, 在本发明实施例的一个优选实施方式中, 根据物理层接到的 DCI判断是 否接收到所述状态报告可以包括以下之一: 1 )在 RRC连接建立之后且未建立业务的情形下,在向网络侧发送 RRC重配完成 消息后, 接收到网络侧发送的第一个下行新传 DCI时, 确定接收到状态报告;
2)在 RRC连接建立之后且未建立业务的情形下,在向网络侧发送 RRC重配完成 消息后, 接收到网络侧发送的第一个新传 DCI时, 且在发送 RRC重配完成消息后到 接收新传 DCI之间未收到过下行重传 DCI, 确定接收到状态报告; 3 )在 RRC连接建立之后且未建立业务的情形下,在向网络侧发送 RRC重配完成 消息后, 接收到网络侧发送的第一个新传 DCI时, 且已接收到 RRC重配完成消息的 相应的混合自动重传 HARQ确认, 确定接收到状态报告;
4)在 RRC连接建立之后且未建立业务的情形下,在向网络侧发送 RRC重配完成 消息后, 检测上行 HARQ成功指示, 在检测到上行 HARQ成功指示的情况下, 接收 到网络侧新传输的 DCI时, 确定接收到状态报告。 优选的, 在本发明实施例的一个实施方式中, 可以在接收到携带有 DR 配置参 数的 RRC配置消息时, 或者发送 RRC重配完成消息时, 等待上述预定时间, 其中, 该预定时间可以为预设值或网络侧指示的值。 图 8是根据本发明实施例的基站的 DR 模式的启动方法的流程图, 如图 8所示, 该方法包括步骤 S802至步骤 S804。 步骤 S802, 向 UE发送 RRC重配完成消息对应的状态报告。 步骤 S804, 根据 UE对上述状态报告的反馈情况启动 DR 模式。 在本发明实施例的一个优选实施方式中, 可以通过但不限于通过以下方式之一启 动 DR 模式: 1 ) 接收 UE发送的状态报告的 HARQ确认, 启动所述 DR 模式; 2) 在没有接收到 UE对状态报告的 HARQ反馈的情况下进行 HARQ自动重发,在 HARQ 自动重发达到预定次数时启动多数 DR 模式; 3 ) 在发送状态报告和 /或接收到 RRC 重配完成消息时等待预定时间, 在预定时间到达时启动 DR 模式。 下面对本发明实施例的上述方法的各个方案分别进行描述。 方案 1
UE收到基站下发的 RRC重配消息及其携带的 DR 配置参数, 向基站发送 RRC 重配完成消息。 当 UE收到相应于上述 RRC重配完成消息的状态报告时, 开始启动 DR 模式。 相应地, 基站收到 RRC重配完成消息后, 向 UE发送上述状态报告。 基站发送上 述状态报告后,并且收到 UE发送的对上述状态报告的 HARQ确认(HARQ ACK)时, 启动 DR 模式。 基站发送上述状态报告后, 如果没有收到针对上述状态报告的 HARQ ACK, 基站 进行 HARQ重发,直到重传成功或重传次数达到 HARQ重发最大次数,基站启动 DRX 模式。 方案 2 该方案可以针对刚进入连接态的场景, 启动 DR 模式前无其他业务数据收发。
UE收到基站下发的 RRC重配消息及其携带的 DR 配置参数, 向基站发送 RRC 重配完成消息。 UE发送 RRC重配完成消息后, 收到第一个 DCI时, 开始启动 DR 模式。 或者,
UE在接收到 DR 配置参数后, 收到第一个新传的 DCI时, 开始启动 DR 模式。 或 者, UE在接收到 DR 配置参数后, 在后续的上行发送成功 (上行 HARQ成功) 后, 收到第一个新传的 DCI时, 开始启动 DR 模式。 相应地, 基站收到 RRC重配完成消息后, 向 UE发送上述状态报告。 基站发送上 述状态报告后,并且收到 UE发送的对上述状态报告的 HARQ确认(HARQ ACK)时, 启动 DR 模式。 基站发送上述状态报告后, 如果没有收到针对上述状态报告的 HARQ ACK, 基站 进行 HARQ重发过程, 直到重传成功或重传次数达到 HARQ重发最大次数, 基站启 动 DR 模式。 方案 3 UE收到基站下发的 RRC重配消息及其携带的 DR 配置参数, 向基站发送 RRC 重配完成消息。
UE收到 DR 配置参数时和 /或发送 RRC重配完成消息时, 等待一个定时长度 X 后, 启动 DR 模式。 相应地, 基站收到 RRC重配完成消息后, 向 UE发送 RRC重配完成消息所对应 的状态报告。 基站发送上述状态报告后, 等待一个定时长度 Y后, 启动 DR 模式。 或者, 基站在发送 RRC重配消息后, 等待一个定时长度 Y后, 启动 DR 模式。 或者, 基站在接收到 RRC重配完成消息后, 等待一个定时长度 Y后, 启动 DRX 模式。 上述时间长度 X为默认值,或者由基站在 RRC重配消息的 DR 配置参数中通知 UE定时长度 X。 上述时间长度 Y为默认值, 或者根据基站通知给 UE的定时长度 X 来确定。 下面结合具体实例对本发明实施例的上述方法进行描述。 实施例 1 如图 1所示,相关技术中, DR 模式下,无业务时, Active Time和 Non-active Time 交替出现, Active Time按周期启动。 UE仅仅在 Active Time期间接收基站下发的数据; 在 Non-active Time期间不接收基站下发的数据,不检测 PDCCH。 AB两点之间是 Active Time期间, 是基站配置的 onDuration Timer运行的时间。 如图 2所示,相关技术中, DR 模式下,有业务时,当 UE检测到基站调度的 PDCCH 时,会进一步延长 Active Time时间,具体为 Inactivity Timer运行时间,该 Inactivity Timer 取值可变, 最短为 1毫秒。 如图 2所示, 相关技术中, 当 UE进入 Non-active Time期间, B箭头后, 有数据 要发送时, 可以通过发送 SR向基站申请上行授权, 用以发送上行数据。 D箭头时, UE向基站发送 SR, E箭头接收到基站的上行授权 (PDCCH with DCIO), E箭头时刻 为 Active Time并延迟到 F箭头(Inactivity Timer停止),此后 UE进入 Non-active Time 期间直到下一个 DR 周期, 此间不接收基站下发的数据。 此例上行 HARQ最大发送 次数为 1, 仅示意 SR过程。 如图 3所示, 相关技术中, UE在 L时刻接收到 RRC重配消息, 启动 DR 模式, 并在 H时刻发送状态报告(对应于基站的 RRC重配消息)及 RRC重配完成消息; UE 在 I时刻对 RRC重配完成消息进行 HARQ重发后,进入到 DRX Non-active Time期间。 由于 UE没有接收到针对 RRC重配完成消息的状态报告, 等待超时后, 在 D点发送 SR申请授权, 并在 J点重新发送 RRC重配完成消息。 此后, 由于基站在接收到 RRC 重配完成消息后启动了 DR 模式, 需要等到下一个 DR 周期的 Active Time时间里 发送状态报告给 UE。 于是, UE—直未收到状态报告, 引发 RLC重传超限以及 RRC 重建。 图 9是根据本发明实施例 1的 DR 模式启动场景的示意图, 在图 9中, A、 B与 图 1相同, C为 Found a UL Grant (发现一个 a UL Grant), H为 RRC reconfiguration complete send ( RRC 重配完成发送), I 为 RRC reconfiguration complete HARQ retransmission (RRC重配完成 HARQ重传), L为 RRC reconfiguration received (接收 到 RRC重配), M为 Status report Received and start DRX mode (接收到状态报告并启 动 DR 模式)。 如图 9所示, 在本发明实施例方案 1中, 和图 3的区别是, 在 L时刻不启动 DRX 模式, 在 I时刻进行 RRC重配完成消息的 HARQ重传后, 等待接收基站的状态报告。 随后, 在 M点接收到基站下发的状态报告时, 启动 DR 模式。 从图 9描述的 DR 模式启动方法和场景来看, UE可以在 RRC重配完成消息发 送之后及时接收到基站下发的状态报告,避免丢失状态报告而引发不必要的 RRC重配 完成消息的重发, 进一步的可避免 RLC重传超限以及 RRC重建。 而图 3描述的场景 中, UE不能及时接收到状态报告, 进一步的可能引发 RLC重传超限以及 RRC重建。 实施例 2 图 10是根据本发明实施例 2的 DR 模式启动场景的示意图, 在图 10中, A、 B 与图 1相同, C为 Found a UL GrantC发现一个 a UL Grant), G为 Inactivity Timer expires (Inactivity Timer超时), H为 RRC reconfiguration complete send(RRC重配完成发送), I为 RRC reconfiguration complete HARQ retransmission (RRC重配完成 HARQ重传), L为 RRC reconfiguration received (接 t|夂至1 J RRC重酉己), N为 Received DL assignment (DCI) And start DRX mode (接收到 DCI, 启动 DR 模式)。 如图 10所示,在本发明实施例方案 2中,和图 3的区别是,在 L时刻不启动 DRX 模式, 在 I时刻进行 RRC重配完成消息的 HARQ重传后, 在 N点接收到基站下发的 下行新分配 (新传 DCI) 时, 启动 DR 模式, 同时启动 DRX Inactivity Timer, G点 该定时器超时, 进入非活跃期。 从图 10描述的 DR 模式启动方法和场景来看, UE可以在 RRC重配完成消息发 送之后及时接收到基站下发的状态报告,避免丢失状态报告而引发不必要的 RRC重配 完成消息的重发, 进一步的可避免 RLC重传超限以及 RRC重建。 而图 3描述的场景 中, UE不能及时接收到状态报告, 进一步的可能引发 RLC重传超限以及 RRC重建。 实施例 3 实施例 3作为方案 2的一种实施方式。 图 11是根据本发明实施例 3的 UE的 DR 模式的启动方法的流程图,如图 11所 示, 该方法包括步骤 S1102至步骤 S1112: 牛聰
少 S1102, UE在收到基站的 RRC重配消息 (携带 DR 配置); 牛聰
少 S1104, 设置状态为 DR 预启动状态 1 ; 牛聰
少 S1106, UE MAC指示上行 HARQ发送成功; 牛聰
少 S1108, 设置状态变迁为 DR 预启动状态 2; 牛聰
少 S1110, 接收到基站新传的下行 DCI; 牛聰
少 S1112, 启动 DR 模式。 上述任何一个输入条件不满足时, 都不能启动 DR 模式。 图 11仅示意了条件满 足时的处理过程。 实施例 4 实施例 4作为方案 3的一种实施方式。 图 12是根据本发明实施例 4的 UE的 DR 模式的启动方法的流程图,如图 12所 示, 该方法包括步骤 S1202至步骤 S1208: 步骤 S1202, UE收到基站的 RRC重配消息 (携带 DR 配置); 步骤 S1204, 启动 DR 定时器 X; 步骤 S1206, DR 定时器 X超; 步骤 S1208, 启动 DR 模式。 图 13是根据本发明实施例 4的基站的 DR 模式的启动方法的流程图, 如图 13 所示, 相应地, 该方法包括步骤 S1302至步骤 S1308: 步骤 S1302, 基站在发送 RRC重配消息 (携带 DR 配置); 步骤 S1304, 启动 DR 定时器 Y; 步骤 S1306, DR 定时器 Y超时; 步骤 S1308, 启动 DR 模式。 在本发明实施例中, 定时器 X时长和定时器 Y时长相等或者 Y小于 X, 保证 UE 不早于基站启动 DR 模式。 从以上的描述中, 可以看出, 本发明实施例实现了如下技术效果: 采用本发明实 施例的上述方案, 使 UE和基站在合适的时机启动 DR 模式并达到协调一致, 进而避 免 RRC重配过程及后续异常,也能避免在此过程中 UE没有接收到状态报告而引发的 不必要的 RRC重配完成消息的重发以及引发耗电。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而, 可以 将它们存储在存储装置中由计算装置来执行, 并且在某些情况下, 可以以不同于此处 的顺序执行所示出或描述的步骤, 或者将它们分别制作成各个集成电路模块, 或者将 它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明不限制于任 何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种非连续接收 DR 模式的启动方法, 包括: 判断是否接收到无线资源控制 RRC重配完成消息对应的状态报告; 在判断结果为是的情况下启动 DR 模式。
2. 根据权利要求 1所述的方法,其中,判断是否接收到 RRC重配完成消息对应的 状态报告包括以下至少之一:
在无线链路控制 RLC层判断是否接收到所述状态报告;
根据物理层接收到的下行分配 DCI判断是否接收到所述状态报告; 在 RRC重配过程中等待预定时间,在所述预定时间到达时确定接收到所述 状态报告。
3. 根据权利要求 2所述的方法, 其中, 根据物理层接收到的 DCI判断是否接收到 所述状态报告包括以下之一:
在 RRC连接建立之后且未建立业务的情形下, 在向网络侧发送所述 RRC 重配完成消息后, 接收到所述网络侧发送的第一个下行新传 DCI时, 确定接收 到所述状态报告;
在所述 RRC连接建立之后且未建立业务的情形下,在向所述网络侧发送所 述 RRC重配完成消息后, 接收到所述网络侧发送的第一个新传 DCI时, 且在 发送所述 RRC重配完成消息后到接收新传 DCI之间未收到过下行重传 DCI, 确定接收到所述状态报告;
在所述 RRC连接建立之后且未建立业务的情形下,在向所述网络侧发送所 述 RRC重配完成消息后, 接收到所述网络侧发送的第一个新传 DCI时, 且已 接收到所述 RRC重配完成消息的相应的混合自动重传 HARQ确认, 确定接收 到所述状态报告;
在所述 RRC连接建立之后且未建立业务的情形下,在向所述网络侧发送所 述 RRC重配完成消息后,检测上行 HARQ成功指示,在检测到所述上行 HARQ 成功指示的情况下, 接收到所述网络侧新传输的 DCI时, 确定接收到所述状态 报告。
4. 根据权利要求 2所述的方法, 其中, 在 RRC重配过程中等待预定时间, 包括: 在接收到携带有 DR 配置参数的 RRC重配消息时和 /或发送 RRC重配完 成消息时, 等待所述预定时间, 其中, 所述预定时间为预设值或所述网络侧指 示的值。
5. 一种非连续接收 DR 模式的启动方法, 包括:
向用户设备 UE发送无线资源控制 RRC重配完成消息对应的状态报告; 根据所述 UE对所述状态报告的反馈情况启动 DR 模式。
6. 根据权利要求 5所述的方法, 其中, 根据所述 UE对所述状态报告的反馈情况 启动 DR 模式包括以下之一:
接收所述 UE发送的所述状态报告的混合自动重传 HARQ确认, 启动所述 DR 模式;
在没有接收到所述 UE对所述状态报告的 HARQ反馈的情况下进行 HARQ 自动重发, 在所述 HARQ自动重发达到预定次数时启动 DR 模式;
在发送所述状态报告时和 /或接收到 RRC重配完成消息时等待预定时间, 在所述预定时间到达时启动所述 DR 模式。
7. 一种用户设备 UE, 包括:
判断模块,设置为判断是否接收到无线资源控制 RRC重配完成消息对应的 状态报告;
启动模块, 设置为在判断结果为是的情况下启动 DR 模式。
8. 根据权利要求 7所述的 UE, 其中, 所述判断模块包括以下至少之一:
第一判断单元,设置为在无线链路控制 RLC层判断是否接收到所述状态报 告. 第二判断单元, 设置为根据物理层接收到的下行分配 DCI判断是否接收到 所述状态报告;
第三判断单元,设置为在 RRC重配过程中等待预定时间,在所述预定时间 到达时确定接收到所述状态报告。
9. 根据权利要求 8所述的 UE, 其中, 所述第二判断单元包括以下至少之一: 第一确定子单元,设置为在 RRC连接建立之后且未建立业务的情形下,在 向网络侧发送所述 RRC重配完成消息后,接收到所述网络侧发送的第一个下行 新传 DCI时, 确定接收到所述状态报告;
第二确定子单元, 设置为在所述 RRC 连接建立之后且未建立业务的情形 下,在向所述网络侧发送所述 RRC重配完成消息后,接收到所述网络侧发送的 第一个新传 DCI时, 且在发送所述 RRC重配完成消息后到接收新传 DCI之间 未收到过下行重传 DCI, 确定接收到所述状态报告;
第三确定子单元, 设置为在所述 RRC 连接建立之后且未建立业务的情形 下,在向所述网络侧发送所述 RRC重配完成消息后,接收到所述网络侧发送的 第一个新传 DCI时, 且已接收到所述 RRC重配完成消息的相应的混合自动重 传 HARQ确认, 确定接收到所述状态报告;
第四确认子单元, 设置为在所述 RRC 连接建立之后且未建立业务的情形 下, 在向所述网络侧发送所述 RRC重配完成消息后, 检测上行 HARQ成功指 示, 在检测到所述上行 HARQ成功指示的情况下, 接收到所述网络侧新传输的 DCI时, 确定接收到所述状态报告。
10. 根据权利要求 8所述的 UE, 其中, 所述第三判断单元包括:
第一等待子单元, 设置为在接收到携带有 DR 配置参数的 RRC重配消息 时, 等待所述预定时间; 和 /或
第二等待子单元,设置为在发送 RRC重配完成消息时,等待所述预定时间; 其中, 所述预定时间为预设值或所述网络侧指示的值。
11. 一种基站, 包括:
发送模块,设置为向用户设备 UE发送无线资源控制 RRC重配完成消息对 应的状态报告;
启动模块,设置为根据所述 UE对所述状态报告的反馈情况启动 DR 模式。
12. 根据权利要求 11所述的基站, 其中, 所述启动模块包括以下之一:
第一启动单元, 设置为接收所述 UE发送的所述状态报告的混合自动重传 HARQ确认, 启动所述 DR 模式; 第二启动单元, 设置为在没有接收到所述 UE对所述状态报告的 HARQ反 馈的情况下进行 HARQ 自动重发, 在所述 HARQ 自动重发达到预定次数时启 动 DR 模式;
第三启动单元, 设置为在发送所述状态报告和 /或接收到 RRC重配完成消 息时等待预定时间, 在所述预定时间到达时启动所述 DR 模式。
13. 一种非连续接收 DR 模式的启动系统, 包括权利要求 7至 10中任一项所述的 用户设备 UE和权利要求 11或 12所述的基站。
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