WO2021129612A1 - 由用户设备执行的方法以及用户设备 - Google Patents

由用户设备执行的方法以及用户设备 Download PDF

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Publication number
WO2021129612A1
WO2021129612A1 PCT/CN2020/138310 CN2020138310W WO2021129612A1 WO 2021129612 A1 WO2021129612 A1 WO 2021129612A1 CN 2020138310 W CN2020138310 W CN 2020138310W WO 2021129612 A1 WO2021129612 A1 WO 2021129612A1
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WIPO (PCT)
Prior art keywords
serving cell
bwp
dormant
indication information
switches
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PCT/CN2020/138310
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English (en)
French (fr)
Inventor
张崇铭
刘仁茂
山田升平
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夏普株式会社
张崇铭
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Application filed by 夏普株式会社, 张崇铭 filed Critical 夏普株式会社
Publication of WO2021129612A1 publication Critical patent/WO2021129612A1/zh

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    • 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
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • 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

  • the present invention relates to the field of wireless communication technology, and more specifically, the present invention relates to a method executed by a user equipment and a corresponding user equipment.
  • the MAC entity of the UE can be configured with one or more serving cells (Serving Cell, Scell), and the network side or the base station can activate or deactivate these configured serving cells.
  • the serving cell instructed to be deactivated by the network side is referred to herein as the serving cell in the deactivated state; the serving cell instructed to be activated by the network side is referred to herein as the serving cell in the activated state.
  • some unused serving cells can be deactivated.
  • a serving cell in the deactivated state has a long interval from receiving an activation command to entering the active state and actually starting to receive downlink signals, which can reach tens or even hundreds of millimeters.
  • the state of the serving cell in the active state can be further divided into a dormant state and a non-dormant state.
  • the serving cell in the non-sleep state or the dormant state belongs to the active state. Since the UE recovers from the dormant state to the non-sleep state, the recovery time consumed is short, so it can provide services immediately, and when the serving cell is in the non-sleep state , Reducing some operations of the UE, so it can also achieve the effect of energy saving. .
  • the current timer ScelldeactivatedTimer controls the duration of the serving cell in the activated state.
  • the UE side will start the timer ScelldeactivatedTimer for the serving cell.
  • the timer ScelldeactivatedTimer runs out, from the perspective of the UE, the serving cell enters the deactivated state.
  • the UE receives the indication information from the network side, instructing a certain serving cell to enter the dormant state from the non-dormant state to save energy.
  • the original intention of the network side sending this indication is to hope that if there is data transmission next, the serving cell can recover quickly.
  • the timer ScelldeactivatedTimer bound to the serving cell is still running, not long after the serving cell enters the dormant state, if the timer ScelldeactivatedTimer runs overtime, the serving cell enters the deactivated state. This is contrary to the previous expectations of the network side.
  • a certain serving cell is in a dormant state, and then receives an instruction message from the network layer, indicating that the serving cell enters a non-dormant state from the dormant state and needs to start transmitting data.
  • the timer ScelldeactivatedTimer bound to the serving cell is still running, so when the instruction information is received, it may not take long.
  • the timer ScelldeactivatedTimer runs overtime, the serving cell enters the deactivated state, and thus cannot work as expected by the network.
  • the present invention provides a method executed by a user equipment and a user equipment that can receive an indication in the UE indicating that a serving cell enters a dormant state from a non-dormant state or enters a non-dormant state from a dormant state.
  • a serving cell enters a dormant state from a non-dormant state or enters a non-dormant state from a dormant state.
  • a method executed by a user equipment UE includes: receiving indication information indicating that the UE switches from a non-dormant bandwidth segment BWP to a dormant BWP on a serving cell or indicating information indicating that the serving cell enters a dormant state Based on the indication information, the UE performs a switch from a non-dormant BWP to a dormant BWP on the serving cell, or switches the serving cell to a pre-configured dormant BWP; and starts or restarts the service associated with the serving cell Cell deactivation timer.
  • a method executed by a user equipment UE includes: receiving indication information indicating that the UE switches from a dormant bandwidth segment BWP to a non-dormant BWP on a serving cell or instructs the serving cell to enter a non-dormant state Based on the indication information, the UE switches the dormant BWP to the non-dormant BWP for the serving cell, or switches the serving cell to a pre-configured specific non-dormant BWP; and starts or restarts related to the serving cell The connected serving cell deactivates the timer.
  • a method executed by a user equipment UE includes: receiving indication information indicating that the UE switches from a non-dormant bandwidth segment BWP to a dormant BWP on a serving cell or indicating that the serving cell enters a dormant state. Indication information; based on the indication information, the UE performs a switch from a non-dormant BWP to a dormant BWP for the serving cell, or switches the serving cell to a pre-configured dormant BWP; and starts a timer associated with the dormant BWP, And stop the serving cell deactivation timer associated with the serving cell.
  • the serving cell enters the deactivated state if the started timer associated with the dormant BWP expires.
  • a method executed by a user equipment UE includes: receiving indication information indicating that the UE switches from a dormant bandwidth segment BWP to a non-dormant BWP on a serving cell or instructs the serving cell to enter a non-dormant state Based on the indication information, the UE switches the serving cell from a dormant BWP to a non-dormant BWP, or switches the serving cell to a pre-configured specific non-dormant BWP; and stops the activated BWP associated with the dormant BWP And start or restart the deactivation timer of the serving cell associated with the serving cell.
  • the timers associated with the dormant BWP include a BWP inactivity timer and a dormant BWP timer.
  • the indication information is carried in the physical downlink control channel PDCCH.
  • the indication information is carried in a pre-defined or configured reference signal.
  • the indication information is carried in a MAC control element, namely MAC CE.
  • a user equipment which includes: a processor; and a memory storing instructions; wherein the instructions execute the above-mentioned method when run by the processor.
  • the present invention it is possible to provide a method executed by a user equipment and a user equipment, which can ensure that the serving cell is safe when the UE receives the indication information indicating that the serving cell enters the dormant state from the non-sleep state or enters the non-sleep state from the dormant state. Correct transition of state.
  • Fig. 1 is a flowchart showing a method executed by a user equipment according to case 1.1 of the first embodiment of the present invention.
  • Fig. 2 is a flowchart showing a method executed by a user equipment according to Case 1.2 of the first embodiment of the present invention.
  • Fig. 3 is a flowchart showing a method executed by a user equipment according to case 2.1 of the second embodiment of the present invention.
  • Fig. 4 is a flowchart showing a method executed by a user equipment according to case 2.2 of the second embodiment of the present invention.
  • Fig. 5 is a block diagram schematically showing a user equipment involved in the present invention.
  • Non-Dormany state Non-Dormany state
  • the serving cell includes a primary cell (primary cell) and a secondary cell (secondary cell), the serving cell mentioned below mainly refers to the secondary cell. Therefore, the serving cell and the secondary cell can replace each other in the following.
  • One MAC entity can be configured with one or more serving cells (Serving Cell, Scell), and the network side or the base station side can activate or deactivate these configured serving cells.
  • the serving cell instructed to be deactivated by the network side is referred to herein as the serving cell in the deactivated state; the serving cell instructed to be activated by the network side is referred to herein as the serving cell in the activated state.
  • the following normal operations can be performed on the serving cell:
  • the serving cell capable of performing the above operations is an activated cell or a cell in an activated state.
  • the UE If the serving cell is in the deactivated state before receiving the above indication, after the UE receives the indication, the UE starts the sCellDeactivationTimer for the serving cell.
  • the timer can be restarted under the following circumstances
  • the PDCCH indicates/schedules the uplink grant/uplink scheduling or downlink assignment on the activated serving cell, that is, it receives the same service as the currently activated service on the other serving cell Cell-related scheduling information, which schedules resources on the currently activated serving cell.
  • MAC PDU Protocol Data Unit
  • the UE When the UE receives an instruction to deactivate a certain serving cell, the UE stops the serving cell or the related timer sCellDeactivationTimer, and deactivates the serving cell
  • the UE will also deactivate the serving cell.
  • Deactivating the serving cell includes the following operations
  • -PUCCH is not transmitted on the serving cell (not transmit PUCCH on the SCell).
  • a serving cell with the above characteristics can be called a deactivated cell or a cell in a deactivated state.
  • the serving cell is configured with one or more BWPs.
  • the UE can distinguish between a non-dormant BWP and a dormant BWP according to the specific configuration of each BWP in the RRC configuration message. Specifically, the UE distinguishes between a non-dormant BWP and a dormant BWP according to the configuration of the PDCCH corresponding to each BWP.
  • the BWP configuration of the non-dormant BWP includes valid PDCCH configurations, and these PDCCH configurations are used for downlink PDCCH monitoring;
  • the BWP configuration of the dormant BWP does not include the PDCCH configuration, or does not include a valid PDCCH configuration, that is, the PDCCH configuration is absent. Since these PDCCH configurations are used for PDCCH monitoring, when the dormant BWP does not include the PDCCH configuration, the UE does not need to monitor the corresponding PDCCH on the dormant BWP, thereby achieving the purpose of energy saving.
  • the working/active BWP of the serving cell actually means that the UE can only perform specified operations on the working BWP on its configured serving cell, such as allowing or prohibiting uplink or downlink transmission, and for example, it may or may not PDCCH monitoring can be performed, depending on whether the working/active BWP is dormant or non-dormant.
  • a non-working BWP it means that the UE will not perform any operation on the BWP.
  • the active BWP of the serving cell belongs to the non-dormant BWP, then the operations that the serving cell can perform are the same as the operations that can be performed by the active serving cell described above.
  • the serving cell in this state can be said to be in a non-sleep state.
  • the active BWP of the serving cell belongs to the dormant BWP, so although the serving cell is still in the active state, the operations that the serving cell can perform are limited. Compared with the operations that can be performed by the active serving cell described above, this restriction is reflected in the fact that the serving cell working on the dormant BWP does not perform transmission on the random access channel and does not perform aperiodic CSI reporting. and many more.
  • the serving cell in this state can be said to be in a dormant state.
  • both the dormant state and the non-sleep state are related to the operations that the serving cell can perform.
  • the above-mentioned non-sleep state can also be called a wake-up state
  • the above-mentioned dormant state can also be called a wake-up state. It is a sleeping state, or the first state and the second state can be directly used to characterize two different sub-states of an active serving cell.
  • BWP switching can be achieved through indication information or timer control.
  • the indication information can be carried in the PDCCH.
  • the UE receives the PDCCH on an activated serving cell and the BWP ID indicated in the PDCCH is different from the BWP ID of the UE currently working, the UE performs BWP handover.
  • the handover target BWP if the handover target BWP is a dormant BWP, then the serving cell will work in the dormant state next; if the handover target is a non-dormant BWP, then the serving cell will work in the non-dormant state next.
  • BWP switching can also be controlled by a timer.
  • a timer may be referred to as a BWP inactivity timer.
  • the UE can start a BWP inactivity timer.
  • the timer runs out, the UE will actively switch to a predefined or default BWP.
  • This predefined or default BWP may be referred to as a default BWP.
  • the BWP inactivity timer may not be started; when the UE switches to the non-default BWP, the BWP inactivity timer is started or restarted.
  • the UE may not start the inactivity timer. This means that the dormant BWP is no longer controlled by the timer. If the serving cell wants to transition from the dormant state to the non-dormant state, it can only realize the transition from the dormant state to the non-dormant state by receiving indication information.
  • the UE can start a timer.
  • This timer can be the aforementioned BWP inactivity timer or a newly defined timer , Such as sleep timer. No matter which timer is used, it can be said that the dormant BWP exists or is configured with an associated timer.
  • the duration of the timer can be set differently from the duration of the timer that is switched to the non-dormant BWP, and can be longer Some, which means that the sleep time is longer than the non-sleep time.
  • a timer different from the BWP inactivity timer is started for the dormant BWP, such as the dormancy timer, then when the serving cell is switched to the dormant BWP, the dormancy timer can be started; when the dormancy timer runs out, it can be switched to other BWP, such as the default/default BWP; when the serving cell is switched to a non-dormant BWP, the aforementioned BWP inactivity timer can be started, and when the BWP inactivity timer expires, it can be switched to other BWPs, For example, the default/default BWP.
  • the configured duration of the sleep timer and the BWP inactivity timer may be different.
  • Fig. 1 is a flowchart showing a method executed by a user equipment according to case 1.1 of the first embodiment of the present invention.
  • Fig. 2 is a flowchart showing a method executed by a user equipment according to Case 1.2 of the first embodiment of the present invention.
  • the UE receives the indication information from the network side or the base station side, the indication information instructs the UE to switch from a non-dormant BWP to a dormant BWP on a serving cell, or this indication information can also be It indicates that a serving cell enters the dormant state.
  • step 103 based on the indication information, the UE switches the serving cell from a non-dormant BWP to a dormant BWP, or switches the serving cell to a pre-configured dormant BWP.
  • step 105 start or restart the timer sCellDeactivationTimer associated with the serving cell.
  • the UE receives indication information from the network side or the base station side, the indication information instructing the UE to switch from a dormant BWP to a non-dormant BWP on a certain serving cell.
  • this indication information may also indicate that a serving cell enters a non-dormant state.
  • the UE switches the serving cell from a dormant BWP to a non-dormant BWP, or switches the serving cell to a pre-configured, specific, non-dormant BWP, such as the default BWP or the initial BWP.
  • BWP (It is assumed here that the default BWP or the initial BWP is a non-sleeping BWP).
  • step 205 the timer sCellDeactivationTimer associated with the serving cell is started or restarted.
  • the “start or restart the timer sCellDeactivationTimer associated with the serving cell” may specifically be: if the timer sCellDeactivationTimer associated with the serving cell is running, then restart the timer. If the timer sCellDeactivationTimer associated with the serving cell is not running or is stopped, then restart/start the timer again
  • Fig. 3 is a flowchart showing a method executed by a user equipment according to case 2.1 of the second embodiment of the present invention.
  • Fig. 4 is a flowchart showing a method executed by a user equipment according to case 2.2 of the second embodiment of the present invention.
  • the UE receives indication information from the network side or the base station side, the indication information instructs the UE to switch from a non-dormant BWP to a dormant BWP on a serving cell, or this indication
  • the information may also indicate that a serving cell enters/switches to a dormant state or enters/switches to a dormant BWP.
  • the UE switches the serving cell from a non-dormant BWP to a dormant BWP, or switches the serving cell to a pre-configured dormant BWP.
  • step 305 the UE performs one or more of the following operations:
  • the dormant BWP of the serving cell exists or is configured with an associated timer, such as a BWP inactivity timer or a dormant BWP timer, then start the timer associated with the dormant BWP;
  • the UE receives indication information from the network side or the base station side, the indication information instructing the UE to switch from a dormant BWP to a non-dormant BWP on a certain serving cell.
  • this indication information may also indicate that a serving cell enters/switches to a non-dormant state or enters/switches to a non-dormant BWP.
  • the UE switches the serving cell from a dormant BWP to a non-dormant BWP, or switches the serving cell to a pre-configured, specific, non-dormant BWP, such as the default BWP or the initial BWP.
  • BWP (it is assumed here that the default BWP or the initial BWP is a non-sleeping BWP).
  • step 405 the UE performs one or more of the following operations:
  • the dormant BWP of the serving cell exists or is configured with an associated timer, such as a BWP inactivity timer or a dormant BWP timer, and the timer is running, then after the UE receives the above indication information, Stop the timer associated with the dormant BWP.
  • an associated timer such as a BWP inactivity timer or a dormant BWP timer
  • the timer associated with the dormant BWP is the BWP inactivity timer, since the serving cell is switched to the non-dormant BWP, the BWP inactivity timer is also applicable to the non-dormant BWP, then the operation of the UE here Yes to restart the BWP inactivity timer.
  • the UE here will not only restart the BWP inactivity timer, but also The duration of the timer should be set to the duration of the BWP inactivity timer corresponding to the non-sleeping BWP;
  • the operation of the UE here can be to stop dormancy BWP timer, and start the BWP inactivity timer.
  • the dormant BWP of the serving cell exists or is configured with an associated timer, such as a BWP inactivity timer or a dormant BWP timer, if the timer is running Time out, the serving cell enters the deactivation state, and preferably, the timer sCellDeactivationTimer associated with the serving cell is stopped
  • the indication information in the first to third embodiments may be carried in the PDCCH.
  • the downlink control information DCI (Downlink Control Information) transmitted on the PDCCH carries indication information.
  • the PDCCH may be received by the UE on the primary cell (primary cell).
  • the PDCCH may also carry information related to scheduling the UE to perform uplink or downlink transmission on the primary cell at the same time, or may not carry information related to scheduling the UE to transmit.
  • reference signalling reference signalling
  • the corresponding operation in the above case 1.1 is performed: switch from a non-dormant BWP to a dormant BWP, or the serving cell Switch to the pre-configured dormant BWP, and start or restart the timer sCellDeactivationTimer. Or the corresponding operation in case 2.1.
  • another type of reference signal is predefined/configured.
  • This type of reference signal instructs the UE to switch from a dormant BWP to a non-dormant BWP on a certain serving cell, or instructs a certain serving cell of the UE to enter a non-dormant state.
  • the UE receives this type of reference information, it performs the operations in the above case 1.2 to switch from the dormant BWP to the non-dormant BWP, or switch the serving cell to a pre-configured, specific, non-dormant BWP, And start or restart the timer sCellDeactivationTimer. Or the corresponding operation in case 2.2. .
  • the difference between the two types of reference signals may be different periods of signal detection, or signals located at different frequencies, or signals located at different sign bits.
  • the UE may periodically detect such reference signals, for example, on a fixed frequency or frequency band with a fixed period. Once the presence of such a reference signal is detected during the detection period, the operation will be performed according to the instructions of the reference signal; if the presence of such a reference signal is not detected during the detection period, no operation will be performed.
  • the operation here can refer to following the reference signal The embarrassment performed.
  • the UE may also continuously receive all possible signals, for example, receive signals on a specific frequency band or all working frequency bands at all times when the downlink signal needs to be received. If such a reference signal is detected from it, follow the instructions of the reference signal to perform the operation, otherwise no operation is performed.
  • the indication information can also be carried in the MAC CE (control element).
  • the information carried by this MAC CE indicates that the UE switches from a dormant BWP to a non-dormant BWP on a certain serving cell, or indicates that a certain serving cell of the UE enters a non-dormant BWP. state.
  • the above indication information can be in the form of a bitmap (bitmap) whether it is carried in the PDCCH or in the MAC CE.
  • bitmap bitmap
  • Each bit in the bitmap corresponds to a configured serving cell. When the bit is set to 0, it means that the cell enters the dormant state or is switched to the dormant BWP; when the bit net is set to 1, it indicates that the cell enters the non-dormant state or is switched to the non-dormant BWP.
  • This non-sleeping BWP is pre-configured or specified. If the MAC CE can also clearly indicate the BWP identity (BWP ID, BWP identity) or the BWP sequence number (BWP Index) corresponding to this non-dormant BWP.
  • the indication information in the first to third embodiments may also be implicitly carried in the MAC CE sent by the base station to the UE.
  • the information carried by this MAC CE instructs the UE to activate one or more serving cells. If before receiving this MAC CE, although the serving cell is in the active state, but in the active dormant state, that is, working on the dormant BWP, then when the UE receives a MAC CE to activate the serving cell, the UE You can perform one or more of the following operations:
  • ACTIVE BWP here it is assumed that the default BWP or the initial BWP or the first active BWP is a non-dormant BWP
  • this MAC CE can also carry an indication to indicate which BWP the activated serving cell’s working BWP is after activation.
  • it can carry the index or BWP ID of the BWP configured by RRC, thereby The display indicates which BWP is the activated serving cell's working BWP after activation.
  • a MAC CE can also be designed, and the MAC CE carries indication information to instruct the UE to deactivate one or more serving cells.
  • the UE can perform one or more of the following operations
  • this MAC CE can also carry indication information, indicating that after the deactivated serving cell is deactivated, if it is activated again, then after activation, which BWP is the working BWP of the serving cell, for example, It can carry the index or BWP ID of the BWP configured by the RRC, thereby explicitly indicating which BWP the activated serving cell works after being activated.
  • the UE when the UE receives the indication information at a certain moment, for example, in the nth time slot, which can be referred to as slot n (slot n) for short, or the reception of the indication information is completed, Then the UE can perform timer-related operations at slot n+k. Where k can be an offset or a time length value in millimeters.
  • the UE can perform timer-related operations at slot n+k1. If the indication information is indicated by the reference signal, the UE can perform timer-related operations at slot n+k2. If the indication information is carried in the MAC CE, the UE can perform timer-related operations at slot n+k3.
  • the values of k1, k2, and k3 can be the same or different.
  • the value of k3 is greater than the value of k1, and the value of k3 is greater than the value of k2.
  • the UE when the UE receives the indication information at time slot n, indicating to deactivate a certain serving cell, if the serving cell is in a non-sleep state before receiving the indication information, then the UE can be in slot n
  • the operation related to the timer is performed at the time of +x1; if the serving cell is in the dormant state before receiving the indication information, the UE can perform the operation related to the timer at the time of slot n+x2.
  • the value of x1 is greater than the value of x2.
  • the UE when the UE receives the indication information at slot n, indicating to activate a certain serving cell, if the serving cell is in the deactivated state before receiving the indication information, and when the serving cell is instructed The information indicates that after activation, the serving cell will be in a non-dormant state, or will work or switch to a non-dormant BWP after being activated, then the UE can perform timer-related operations at slot n+y1; if it is receiving Before the indication information, the serving cell is in the deactivated state, and when the serving cell is indicated to be activated by the indication information, the serving cell will be in the dormant state, or will work or switch to the dormant BWP after being activated, then the UE You can perform timer-related operations at slot n+y2.
  • the value of y1 is greater than the value of y2.
  • the UE when the UE receives the indication information at slot n, indicating that a certain serving cell is activated, if the serving cell is already in the active state before receiving the indication information, for example, it is working on a non-dormant BWP , When receiving the indication information, if the currently working non-dormant BWP ID is different from the pre-configured or default BWP ID when the serving cell enters the active state from the deactivated state, the UE performs the BWP handover and switches to the pre-configured BWP ID. On the configured or default BWP, and can perform timer-related operations at slot n+y3.
  • y3 can be 0, and preferably, the value of y3 is smaller than the value of y2, and the value of y3 is smaller than the value of y1.
  • the UE when the UE receives the indication information at slot n, indicating to activate a certain serving cell, if the serving cell is already in the activated state before receiving the indication information, for example, it is working on a dormant BWP, the UE performs BWP handover and switches to the pre-configured BWP Or on the default BWP, and can perform timer-related operations at slot n+y4.
  • y4 may be 0, and preferably, the value of y4 is smaller than the value of y2, the value of y4 is smaller than the value of y1, and the value of y3 may be equal to the value of y4.
  • the UE when the UE receives the indication information at slot n, indicating to activate a certain serving cell, if the serving cell is already in the active state before receiving the indication information, for example, it is working in a dormant or non-dormant state.
  • the UE receives the indication information, if the current working BWP ID of the serving cell is the same as the pre-configured or default BWP ID when the serving cell enters the active state from the deactivated state, then the service The cell continues to work on the current BWP, and can perform timer-related operations at slot n+y5.
  • y5 may be 0, and preferably, the value of y5 is smaller than the value of y2, the value of y5 is smaller than the value of y1, and the value of y5 may be equal to the value of y4 or y3.
  • the "performing an operation related to the timer” mentioned here may include starting or restarting the timer, and stopping the operation of the timer; the timer may be any timer mentioned in the foregoing embodiment.
  • CSI reporting In addition to performing timer-related operations at these times, CSI reporting (CSI reporting) can also be performed.
  • FIG. 5 is used to describe a user equipment that can execute the method executed by the user equipment described in detail above in the present invention as a modified example.
  • Fig. 5 is a block diagram showing a user equipment UE related to the present invention.
  • the user equipment UE50 includes a processor 501 and a memory 502.
  • the processor 501 may include, for example, a microprocessor, a microcontroller, an embedded processor, and the like.
  • the memory 502 may include, for example, volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memories.
  • the memory 502 stores program instructions. When the instruction is executed by the processor 501, it can execute the above method executed by the user equipment described in detail in the present invention.
  • the program running on the device according to the present invention may be a program that enables the computer to implement the functions of the embodiments of the present invention by controlling a central processing unit (CPU).
  • the program or the information processed by the program can be temporarily stored in volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory systems.
  • the program for realizing the functions of the various embodiments of the present invention can be recorded on a computer-readable recording medium.
  • Corresponding functions can be realized by causing the computer system to read the programs recorded on the recording medium and execute these programs.
  • the so-called "computer system” herein may be a computer system embedded in the device, and may include an operating system or hardware (such as peripheral devices).
  • the "computer-readable recording medium” may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium storing a program dynamically for a short period of time, or any other recording medium readable by a computer.
  • circuits for example, single-chip or multi-chip integrated circuits.
  • Circuits designed to perform the functions described in this specification can include general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, discrete Gate or transistor logic, discrete hardware components, or any combination of the above devices.
  • the general-purpose processor may be a microprocessor, or any existing processor, controller, microcontroller, or state machine.
  • the above-mentioned circuit can be a digital circuit or an analog circuit. In the case of new integrated circuit technologies that replace existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present invention may also be implemented using these new integrated circuit technologies.
  • the present invention is not limited to the above-mentioned embodiment. Although various examples of the embodiment have been described, the present invention is not limited thereto.
  • Fixed or non-mobile electronic equipment installed indoors or outdoors can be used as UE equipment or communication equipment, such as AV equipment, kitchen equipment, cleaning equipment, air conditioners, office equipment, vending machines, and other household appliances.

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  • Mobile Radio Communication Systems (AREA)

Abstract

根据本发明，提出了一种由用户设备UE执行的方法，包括：接收指示所述UE在服务小区上从非休眠带宽片段BWP切换到休眠BWP的指示信息或者指示服务小区进入休眠态的指示信息；基于该指示信息，所述UE对该服务小区进行非休眠BWP到休眠BWP的切换，或者将该服务小区切换到预先配置的休眠BWP上；以及启动或者重新启动与该服务小区相关联的服务小区去激活定时器。

Description

由用户设备执行的方法以及用户设备 技术领域
本发明涉及无线通信技术领域，更具体地，本发明涉及由用户设备执行的方法以及相应的用户设备。
背景技术
当UE工作在载波聚合(Carriers Aggregation)的场景下，UE的MAC实体可以被配置一个或者多个服务小区(Serving Cell，Scell)，网络侧或基站可以激活或者去激活这些配置的服务小区。其中被网络侧指示去激活的服务小区，这里称为该服务小区处于去激活态；被网络侧指示激活的服务小区，这里称该服务小区处于激活态。为了节能，部分未使用的服务小区可以被去激活。但是一个处于去激活态的服务小区从接收到一个激活命令进入激活态，到真正开始接收下行信号，期间间隔的时间较长，可以达到几十甚至上百毫米。为了避免如此长的恢复时间，可以将处于激活态的服务小区的状态做进一步划分，可以分为休眠态和非休眠态。其中处于非休眠态或者休眠态的服务小区都属于激活态，由于UE从休眠态恢复到非休眠态，所消耗的恢复时间较短，因此能够马上提供服务，以及当服务小区在非休眠态下，减少了UE的一些操作，因此也可以达到节能的效果。。
目前定时器ScelldeactivatedTimer控制了服务小区在激活态的时长。当一个服务小区进入激活态时，在UE侧会为该服务小区启动定时器ScelldeactivatedTimer，当这个定时器ScelldeactivatedTimer运行超时，从UE角度而言，这个服务小区进入了去激活态。
这样存在一个问题，当UE接收到网络侧发来的指示信息，指示某个服务小区从非休眠态进入休眠态，进行节能。网络侧发送该指示的本意是希望接下来如果有数据传输，该服务小区能够快速的恢复过来。然而，由于和该服务小区绑定的定时器ScelldeactivatedTimer仍然在运行， 该服务小区在进入休眠态后没多久，如果定时器ScelldeactivatedTimer运行超时，则该服务小区就进入了去激活态。这就于网络侧之前的预想相违背。
在另一种情况下，某个服务小区处于休眠态，然后接收到了网络层发来的指示信息，指示该服务小区从休眠态进入非休眠态，需要开始传输数据。然而，在接收到该指示前，由于UE处于激活态中的休眠态，因此和该服务小区绑定的定时器ScelldeactivatedTimer仍然在运行，那么在接收到该指示信息时，既有可能没过多久，定时器ScelldeactivatedTimer运行超时，则该服务小区就进入了去激活态，从而无法如网络预料的那么进行工作。
为了解决上述问题，在UE接收到指示服务小区从非休眠态进入休眠态或者从休眠态进入非休眠态时，如何保证服务小区的状态的正确转换，是需要解决的问题。
发明内容
为了解决上述问题中的至少一部分，本发明提供了一种由用户设备执行的方法以及用户设备，能够在UE接收到指示服务小区从非休眠态进入休眠态或者从休眠态进入非休眠态的指示信息时，保证服务小区的状态的正确转换。
根据本发明，提出了一种由用户设备UE执行的方法，包括：接收指示所述UE在服务小区上从非休眠带宽片段BWP切换到休眠BWP的指示信息或者指示服务小区进入休眠态的指示信息；基于该指示信息，所述UE对该服务小区进行非休眠BWP到休眠BWP的切换，或者将该服务小区切换到预先配置的休眠BWP上；以及启动或者重新启动与该服务小区相关联的服务小区去激活定时器。
另外，根据本发明，提出了一种由用户设备UE执行的方法，包括：接收指示所述UE在服务小区上从休眠带宽片段BWP切换到非休眠BWP或者指示服务小区进入非休眠态的指示信息；基于该指示信息，所述UE对该服务小区进行休眠BWP到非休眠BWP的切换，或者将该服 务小区切换到预先配置的特定的非休眠BWP上；以及启动或者重新启动与该服务小区相关联的服务小区去激活定时器。
此外，根据本发明，提出了一种由用户设备UE执行的方法，包括：接收指示所述UE在服务小区上从非休眠带宽片段BWP切换到休眠BWP的指示信息或者指示服务小区进入休眠态的指示信息；基于该指示信息，所述UE对该服务小区进行非休眠BWP到休眠BWP的切换，或者将该服务小区切换到预先配置的休眠BWP上；以及启动与休眠BWP相关联的定时器，并且停止与该服务小区相关联的服务小区去激活定时器。
优选地，如果启动的与休眠BWP相关联的定时器超时，则该服务小区进入去激活态。
另外，根据本发明，提出了一种由用户设备UE执行的方法，包括：接收指示所述UE在服务小区上从休眠带宽片段BWP切换到非休眠BWP或者指示服务小区进入非休眠态的指示信息；基于该指示信息，所述UE对该服务小区进行休眠BWP到非休眠BWP的切换，或者将该服务小区切换到预先配置的特定的非休眠BWP上；以及停止已启动的与休眠BWP相关联的定时器，并且启动或者重新启动与该服务小区相关联的服务小区去激活定时器。
优选地，所述与休眠BWP相关联的定时器包括BWP不活动定时器和休眠BWP定时器。
优选地，将所述指示信息携带在物理下行控制信道PDCCH中。
优选地，将所述指示信息携带在预先定义或配置的参考信号中。
优选地，将所述指示信息携带在MAC控制元素即MAC CE中。
此外，根据本发明，提出了一种用户设备，包括：处理器；以及存储器，存储有指令；其中，所述指令在由所述处理器运行时执行上述的方法。
发明效果
根据本发明，能够提供一种由用户设备执行的方法以及用户设备，能够在UE接收到指示服务小区从非休眠态进入休眠态或者从休眠态进入非休眠态的指示信息时，保证服务小区的状态的正确转换。
附图说明
通过下文结合附图的详细描述，本发明的上述和其它特征将会变得更加明显，其中：
图1是示出了根据本发明的实施例一的情况1.1的由用户设备执行的方法的流程图。
图2是示出了根据本发明的实施例一的情况1.2的由用户设备执行的方法的流程图。
图3是示出了根据本发明的实施例二的情况2.1的由用户设备执行的方法的流程图。
图4是示出了根据本发明的实施例二的情况2.2的由用户设备执行的方法的流程图。
图5是示意性示出本发明所涉及的用户设备的框图。
具体实施方式
下面结合附图和具体实施方式对本发明进行详细阐述。应当注意，本发明不应局限于下文所述的具体实施方式。另外，为了简便起见，省略了对与本发明没有直接关联的公知技术的详细描述，以防止对本发明的理解造成混淆。
在具体描述之前，先对本发明中提到的若干术语做如下说明。除非另有指出，本发明中涉及的术语都具有下文的含义。
UE    User Equipment 用户设备
NR    New Radio 新一代无线技术
LTE   Long Term Evolution 长期演进技术
eLTE  Enhaced Long Term Evolution 增强的长期演进技术
RRC   Radio Resource Control 无线资源控制(层)
MAC  Medium Access Control媒体接入控制(层)
MAC CE  MAC Control Element MAC控制元素
PDCCH  Physical Downlink Control Channel 物理下行控制信道
RACH  Random Access Channel 随机接入信道
CSI  Channel State Information 信道状态信息
RS Reference Signal 参考信号
ACTIVE time 活跃期/活动期
Non-ACTIVE time 非活跃期/活动期
PUSCH  Physical Uplink Shared Channel 物理上行共享信道
PUCCH  Physical Uplink Control Channel 物理上行控制信道
Dormany state 休眠状态
Non-Dormany state 非休眠态
UL-SCH  Uplink shared Channel 上行共享信道
BWP  Bandwidth part 带宽片段
下文以NR移动通信系统及其后续的演进版本作为示例应用环境，以支持NR的基站和UE设备为例，具体描述了根据本发明的多个实施方式。然而，需要指出的是，本发明不限于以下实施方式，而是可适用于更多其它的无线通信系统，例如eLTE通信系统，而且可以适用于其他基站和UE设备，例如支持eLTE的基站和UE设备。
由于服务小区包括主小区(primary cell)和辅小区(secondary cell)，在下文中提到的服务小区主要是指辅小区。因此在下文中服务小区和辅小区可以相互替换。
一个MAC实体可以被配置一个或者多个服务小区(Serving Cell，Scell)，网络侧或基站侧可以激活或者去激活这些配置的服务小区。其中被网络侧指示去激活的服务小区，这里称为该服务小区处于去激活态；被网络侧指示激活的服务小区，这里称该服务小区处于激活态。
当UE接收到指示，指示激活某个服务小区，那么在该服务小区上可以进行以下常规操作：
在该服务小区上传输SRS(SRS transmissions on the SCell)
为该服务小区进行CSI报告(CSI reporting for the SCell)
在该服务小区上监听PDCCH(PDCCH monitoring on the SCell)
监听和该服务小区相关的PDCCH(PDCCH monitoring for the SCell)
在该服务小区上进行PUCCH传输(PUCCH transmissions on the SCell)
可以认为能够进行上述操作的服务小区为被激活的小区或者是处于激活态的小区。
如果该服务小区在接收到上述指示之前，处于去激活态，那么在UE接收到该指示后，UE为该服务小区启动sCellDeactivationTimer。
对于一个在运行中的定时器sCellDeactivationTimer在下述情况下可以重新启动该定时器
-当UE在处于激活的服务小区上接收到PDCCH指示一个上行授权/上行调度或者是下行指派
-当UE在其他服务小区接收到PDCCH，该PDCCH指示了/调度了在该激活的服务小区上的上行授权/上行调度或者是下行指派，即，在其他服务小区上接收到与当前激活的服务小区相关的调度信息，这些调度信息调度了在当前激活的服务小区上的资源。
-当UE在该激活的服务小区上配置的上行授权(a configured uplink grant)上发送了一个MAC PDU(协议数据单元)或者是在该激活的服务小区上配置的下行指派(configured downlink assignment)中接收了一个MAC PDU。
当UE接收到指示，指示去激活某个服务小区，那么UE停止与该服务小区或者相关的定时器sCellDeactivationTimer，并且去激活该服务小区
此外，当与该服务小区相关的定时器sCellDeactivationTimer运行超时了，那么UE也会去激活该服务小区。
去激活该服务小区包括下述操作
-停止与该服务小区相关的bwp-InactivityTimer
-去激活任意与该服务小区相关的、处于活跃的BWP(带宽片段)
当一个服务小区被去激活时，其特征如下：
-不在该服务小区上传输SRS(not transmit SRS on the SCell)；
-不为该服务小区进行CSI报告(not report CSI for the SCell)；
-在该服务小区的上行信道上不进行传输(not transmit on UL-SCH on the SCell)；
-在该服务小区上的随机信道上不进行传输(not transmit on RACH on the SCell)；
-不在该服务小区上监听PDCCH(not monitor the PDCCH on the SCell)；
-不监听和该服务小区相关的PDCCH(not monitor the PDCCH for the SCell)；
-在该服务小区上PUCCH不进行传输(not transmit PUCCH on the SCell)。
可以认为具备上述特征的服务小区可以被称为被去激活的小区或者是处于去激活态的小区。
非休眠BWP以及休眠BWP
服务小区被配置了一个或者多个BWP。其中，UE可以根据RRC配置消息中对每个BWP的具体配置来区分非休眠BWP以及休眠BWP。具体地，UE根据对应于每个BWP的PDCCH的配置来区分非休眠BWP以及休眠BWP。
非休眠BWP的BWP配置中包含了有效的PDCCH配置，这些PDCCH配置用于下行PDCCH的监听；
休眠BWP的BWP配置中则不包含PDCCH配置，或者是不包含有效的PDCCH配置，即PDCCH配置缺省(absent)。由于这些PDCCH配置用于PDCCH的监听，因此当休眠BWP不包含PDCCH配置时，UE在休眠BWP上不需要监听相应的PDCCH，从而实现节能的目的。
无论是休眠BWP还是非休眠BWP，都可以作为该服务小区工作的BWP或者是活跃的BWP(ACTIVE BWP)。一个服务小区一个时刻只能工作在一个BWP上，这个工作的BWP就被称为活跃的BWP。这里，服务小区工作的/活跃的BWP，实际是指UE在其被配置的服务小区上，只能在工作的BWP上进行规定的操作，例如允许或者禁止上行或者下行传输，又例如可以或者不可以进行PDCCH监听，这个取决于该工作的/活跃的BWP是休眠还是非休眠的。而对于非工作的BWP则是指UE不会在该BWP上进行任何操作。
在一种情况下，服务小区活跃的BWP属于非休眠BWP，那么该服务小区可以进行的操作与前面所述的处于激活态的服务小区可以进行的 操作相同。这样状态下的服务小区可以被称为是处于非休眠态。
在另一种情况下，服务小区活跃的BWP属于休眠BWP，那么尽管该服务小区仍然处于激活态，但是该服务小区可以进行的操作受限。和与前面所述的处于激活态的服务小区可以进行的操作相比，这种限制体现在工作在休眠BWP上的服务小区不进行随机接入信道上的传输，以及不进行非周期的CSI报告等等。这样状态下的服务小区可以被称为是处于休眠态。
需要说明的是，无论休眠态还是非休眠态都是与服务小区可以进行的操作有关，类似的，上述非休眠态还可以被称为唤醒态(wake-up)，上述休眠态还可以被称为睡眠态(sleeping)，或者可以直接用第一状态和第二状态来表征一个处于激活状态的服务小区的两个不同的子状态。
BWP的切换
BWP的切换可以通过指示信息或者是定时器控制来实现。
指示信息可以携带在PDCCH中，当UE在某个激活的服务小区上接收到PDCCH，在PDCCH中指示的BWP ID与UE当前工作的BWP ID不同时，UE进行BWP的切换。根据切换目标BWP的属性，如果切换的目标BWP是个休眠BWP，那么这个服务小区接下来将工作在休眠态；如果切换的目标是个非休眠BWP，那么这个服务小区接下来工作在非休眠态。
BWP切换还可以由定时器来控制。这样的定时器可以被称为BWP不活动定时器。当UE切换到一个BWP上时，UE可以启动BWP不活动定时器，当这个定时器运行超时，UE会主动切换到预先定义或者默认的BWP上。这个预先定义的或者默认的BWP可以被称为默认BWP。特别的，当UE切换到默认BWP上时，可以不启动BWP不活动定时器；当UE切换到非默认BWP上时，才会启动或者重新启动BWP不活动定时器。
在一种情况下，如果UE在该服务小区上被切换到了休眠BWP上，UE可以不启动不活动定时器。这意味着对于休眠BWP，不再由定时器控制，该服务小区如果要从休眠状态转入非休眠状态，只能通过接收指示信息来实现从休眠态到非休眠态的转换。
在另外一种情况下，如果UE在该服务小区上被切换到了休眠BWP 上，UE可以启动一个定时器，这个定时器可以是前面所述BWP不活动定时器，或者是一个新定义的定时器，例如休眠定时器。无论采用哪一种定时器，都可以称为该休眠BWP存在或者被配置了相关联的定时器。
如果休眠BWP采用BWP不活动定时器，那么当服务小区被切换到休眠BWP上时，该定时器的时长设置，可以与被切换到非休眠BWP上启动该定时器的时长设置不同，可以更长一些，这意味着可以休眠的时间比非休眠的时间要长。
如果对休眠BWP启动与BWP不活动定时器不同的定时器，例如休眠定时器，那么当服务小区被切换到休眠BWP上时，可以启动休眠定时器；当休眠定时器运行超时，可以切换到其他BWP上，例如默认/缺省的BWP；当服务小区被切换到非休眠BWP上时，可以启动前面所述BWP不活动定时器，当BWP不活动定时器运行超时，可以切换到其他BWP上，例如默认/缺省的BWP。休眠定时器与BWP不活动定时器被配置的时长可以不同。
以下，详细描述本发明的若干实施例。
实施例一
图1是示出了根据本发明的实施例一的情况1.1的由用户设备执行的方法的流程图。图2是示出了根据本发明的实施例一的情况1.2的由用户设备执行的方法的流程图。
情况1.1：
如图1所示，在步骤101，UE接收到网络侧或者基站侧发来的指示信息，该指示信息指示UE在一个服务小区上从非休眠BWP切换到休眠BWP，或者，这个指示信息还可以是指示一个服务小区进入休眠态。
在步骤103，基于该指示信息，UE对该服务小区进行非休眠BWP到休眠BWP切换，或者是将该服务小区切换到预先配置的休眠BWP上。
在步骤105，启动或者重新启动(start or restart)与该服务小区相关联的定时器sCellDeactivationTimer。
情况1.2：
如图2所示，在步骤201，UE接收到网络侧或者基站侧发来的指示信息，该指示信息指示UE在某个服务小区上从休眠BWP切换到非休眠BWP。或者，这个指示信息还可以是指示一个服务小区进入非休眠态。
在步骤203，基于该指示信息，UE对该服务小区进行休眠BWP到非休眠BWP切换，或者是将该服务小区切换到预先配置的、某个特定的、非休眠BWP上，例如默认BWP或者初始BWP(这里假设默认BWP或者初始BWP是非休眠BWP)。
在步骤205，启动或者重新启动与该服务小区相关联的定时器sCellDeactivationTimer。
其中“启动或者重新启动与该服务小区相关联的定时器sCellDeactivationTimer”具体可以是：如果与该服务小区相关联的定时器sCellDeactivationTimer正在运行中，那么重新启动该定时器。如果与该服务小区相关联的定时器sCellDeactivationTimer没有在运行，或者被停止了，那么重新/再次启动该定时器
实施例二
图3是示出了根据本发明的实施例二的情况2.1的由用户设备执行的方法的流程图。图4是示出了根据本发明的实施例二的情况2.2的由用户设备执行的方法的流程图。
情况2.1：
如图3所示，在步骤301，UE接收到网络侧或者基站侧发来的指示信息，该指示信息指示UE在一个服务小区上从非休眠BWP切换(switch)到休眠BWP，或者，这个指示信息还可以是指示一个服务小区进入/切换到休眠态或者是进入/切换到休眠BWP。
在步骤303，基于该指示信息，UE对该服务小区进行非休眠BWP到休眠BWP切换，或者是将该服务小区切换到预先配置的休眠BWP上。
在步骤305，UE执行下述操作中的一个或多个：
-如果该服务小区的休眠BWP存在或者被配置了相关联的定时器，例如BWP不活动定时器，或者是休眠BWP定时器，那么启动与休眠BWP相关联的定时器；
-停止与该服务小区相关联的定时器sCellDeactivationTimer。
情况2.2：
如图4所示，在步骤401，UE接收到网络侧或者基站侧发来的指示信息，该指示信息指示UE在某个服务小区上从休眠BWP切换到非休眠BWP。优选的，这个指示信息还可以是指示一个服务小区进入/切换到非休眠态或者是进入/切换到非休眠BWP。
在步骤403，基于该指示信息，UE对该服务小区进行休眠BWP到非休眠BWP切换，或者是将该服务小区切换到预先配置的、某个特定的、非休眠BWP上，例如默认BWP或者初始BWP(这里假设默认BWP或者初始BWP是非休眠BWP)。
在步骤405，UE执行下述操作中的一个或多个：
-如果该服务小区的休眠BWP存在或者被配置了相关联的定时器，例如BWP不活动定时器，或者是休眠BWP定时器，且该定时器正在运行，那么UE在接收到上述指示信息后，停止与休眠BWP相关联的定时器。
特别地，如果与休眠BWP相关联的定时器是BWP不活动定时器，由于该服务小区被切换到非休眠BWP上，该BWP不活动定时器也适用于非休眠BWP，那么UE在这里的操作是重新启动BWP不活动定时器。
如前所述，如果与休眠BWP对应的BWP不活动定时器被配置的时长与非休眠BWP对应的BWP不活动定时器被配置的时长不同，那么这里UE除了重新启动BWP不活动定时器，还要将该定时器的时长设置为与非休眠BWP对应的BWP不活动定时器的时长；
如果与休眠BWP相关联的定时器是休眠BWP定时器，那么由于该服务小区被切换到非休眠BWP上，且该预定的非休眠BWP不是默认BWP，那么UE在这里的操作是可以是停止休眠BWP定时器，以及启动BWP不活动定时器。
-启动或者重新启动与该服务小区相关联的定时器sCellDeactivationTimer。
实施例三
在实施例二的基础上，或者其他情况下，如果该服务小区的休眠BWP存在或者被配置了相关联的定时器，例如BWP不活动定时器，或者是休眠BWP定时器，如果该定时器运行超时，那么该服务小区进入去激活态，以及优选地，停止与该服务小区相关联的定时器sCellDeactivationTimer
实施例四
在实施例一到三中的指示信息可以携带在PDCCH中。例如，在PDCCH上传输的下行控制信息DCI(Downlink Control Information)中携带指示信息。该PDCCH优选地，可以是UE在主小区(primary cell)上接收到的。此外，该PDCCH还可以同时携带着调度UE在主小区上进行上行或者下行的传输的相关信息，或者是不携带与调度UE传输的相关信息。
还可以是将特定的参考信号(reference signalling)作为指示信息，例如，预先定义/配置某一类参考信号，这类参考信号指示UE在某个服务小区上从非休眠BWP切换到休眠BWP，或者是指示UE某一个服务小区进入休眠态。当UE接收到/检测到这类参考信号时，或者是UE测量的结果存在这类参考信号时，执行上述情况1.1中相应的操作：进行非休眠BWP到休眠BWP切换，或者是将该服务小区切换到预先配置的休眠BWP上，以及启动或者重新启动定时器sCellDeactivationTimer。或者是情况2.1中相应的操作。
又例如预先定义/配置另外一类参考信号，这类参考信号指示UE在某个服务小区上从休眠BWP切换到非休眠BWP，或者是指示UE某一个服务小区进入非休眠态。当UE接收到这类参考信息时，执行上述情况1.2中的操作，进行休眠BWP到非休眠BWP的切换，或者是将该服务小区切换到预先配置的、某个特定的、非休眠BWP上，以及启动或者重新启动定时器sCellDeactivationTimer。或者是情况2.2中相应的操作。。
这两类参考信号的区别可以是信号检测的周期不同，或者是位于不同频率上的信号，还可以是位于不同符号位上的信号。
UE可以定期去检测这样的参考信号，例如以固定的周期在固定的频率或者频段上检测。一旦在检测期间检测到这样的参考信号的存在，则遵照参考信号的指示执行操作；如果在检测期间没有检测到这样的参考信号存在，则不进行任何操作，这里的操作可以是指遵照参考信号所执行的惭怍。
UE还可以持续接收所有可能的信号，例如在所有需要接收下行信号的时刻在特定频段上或者全部工作频段上接收信号。如果从中检测到了这样的参考信号，则遵照参考信号的指示执行操作，否则不进行任何操作。
该指示信息还可以携带在MAC CE(控制元素)中，这个MAC CE携带的信息指示了UE在某个服务小区上从休眠BWP切换到非休眠BWP，或者是指示UE某一个服务小区进入非休眠态。
上述指示信息无论是携带在PDCCH中，还是携带在MAC CE中，都可以采用位图(bitmap)的形式。位图中的每一个比特位对应一个配置的服务小区。当该比特位被置于0时，表示该小区进入休眠态或者是切换到休眠BWP；当该比特网被至于1时，表示该小区进入非休眠态或者是切换到非休眠BWP。这个非休眠的BWP是预先配置的，或者是指定的。如果在MAC CE中还可以是明确地指示这个非休眠BWP对应的BWP标识(BWP ID，BWP identity)或者是BWP序号(BWP Index)。
实施例五
在一种特殊情况下，实施例一到三中的指示信息还可以隐式地携带在基站发送给UE的MAC CE中。这个MAC CE携带的信息指示UE激活一个或者多个服务小区。如果在接收到这个MAC CE之前，该服务小区虽然处于激活态，但是处于激活态中的休眠态，即工作在休眠BWP上，那么当UE接收到一个MAC CE用于激活该服务小区时，UE可以执行下述操作之一或者多个：
-启动或者重新启动与该服务小区相关联的定时器sCellDeactivationTimer
-对该服务小区进行休眠BWP到非休眠BWP切换，或者是将该服务小区切换到预先配置的、某个特定的、非休眠BWP上，例如默认BWP 或者初始BWP，或者是首次活跃BWP(first ACTIVE BWP)，(这里假设默认BWP或者初始BWP或者首次活跃BWP是非休眠BWP)
特别地，在这个MAC CE中还可以携带指示，指示被激活的服务小区在被激活后的工作BWP是哪一个BWP，例如，可以携带由RRC配置的BWP的序号(index)或者BWP ID，从而显示地指示了被激活的服务小区在被激活后的工作的BWP是哪一个。
此外，还可以设计一个MAC CE，在这个MAC CE中携带指示信息，指示UE去激活一个或者多个服务小区的。
如果在接收到这个MAC CE之前，该服务小区处于激活态，那么当UE接收到一个MAC CE用于去激活该服务小区时，UE可以执行下述操作之一或者多
-停止与该服务小区相关联的定时器sCellDeactivationTimer
-对该服务小区进行去激活操作
特别地，在这个MAC CE中还可以携带指示信息，指示被去激活的服务小区在被去激活后，如果再次被激活，那么被激活后，该服务小区的工作BWP是哪一个BWP，例如，可以携带由RRC配置的BWP的序号(index)或者BWP ID，从而显示地指示了被激活的的服务小区在被激活后的工作的BWP是哪一个。
实施例六
在实施例四或五的基础上，当UE在某一个时刻，例如在第n个时隙，可以简称为时隙n(slot n)的时刻接收到指示信息，或者是对指示信息接收完成，那么UE可以在slot n+k的时刻执行和定时器有关的操作。其中k可以是一个偏移量或者是以毫米为单位的时间长度值。
特别地，如果指示信息携带在PDCCH中，UE可以在slot n+k1的时刻执行和定时器有关的操作。如果指示信息由参考信号来指示，那么UE可以在slot n+k2的时刻执行和定时器有关的操作。如果指示信息携带在MAC CE中，那么UE可以在slot n+k3的时刻执行和定时器有关的操作。
其中k1，k2，k3的取值可以相同或者不同。优选地，k3取值大于k1的取值，k3取值大于k2的取值。
此外，在上述所有实施例中，当UE在slot n时刻接收到指示信息，指示去激活某一个服务小区，如果在接收到该指示信息之前，服务小区处于非休眠态，那么UE可以在slot n+x1的时刻执行和定时器有关的操作；如果在接收到该该指示信息之前，服务小区处于休眠态，那么UE可以在slot n+x2的时刻执行和定时器有关的操作。优选地，x1的取值大于x2的取值。
以及在上述所有实施例中，当UE在slot n时刻接收到指示信息，指示激活某一个服务小区，如果在接收到该指示信息之前，该服务小区处于去激活态，并且当该服务小区被指示信息指示激活后，服务小区将处于非休眠态，或者是被激活后将工作在或者切换到非休眠BWP上，那么UE可以在slot n+y1的时刻执行和定时器有关的操作；如果在接收到该该指示信息之前，服务小区处于去激活态，并且当该服务小区被指示信息指示激活后，服务小区将处于休眠态，或者是被激活后将工作在或者切换到休眠BWP上，那么UE可以在slot n+y2的时刻执行和定时器有关的操作。优选地，y1的取值大于y2的取值。
以及在上述所有实施例中，当UE在slot n时刻接收到指示信息，指示激活某一个服务小区，如果在接收到该指示信息之前，该服务小区已经处于激活态，例如工作在非休眠BWP上，那么接收到该指示信息的时候，如果当前工作的非休眠BWP ID与该服务小区从去激活态进入激活态时预先配置的或者是默认的BWP ID不同，那么UE执行BWP切换，切换到预先配置的或者是默认的BWP上，以及可以在slot n+y3的时刻执行和定时器有关的操作。优选地，y3可以为0，以及优选地，y3的取值小于y2的取值，y3的取值小于y1的取值.
以及在上述所有实施例中，当UE在slot n时刻接收到指示信息，指示激活某一个服务小区，如果在接收到该指示信息之前，该服务小区已经处于激活态，例如工作在休眠BWP上，那么接收到该指示信息的时候，如果当前工作的非休眠BWP ID与该服务小区从去激活态进入激活态时预先配置的或者是默认的BWP ID不同，那么UE执行BWP切换，切换到预先配置的或者是默认的BWP上，以及可以在slot n+y4的时刻执行和定时器有关的操作。优选地，y4可以为0，以及优选地，y4的取值小于y2的取值，y4的取值小于y1的取值，y3的取值可以等于y4的 取值。
以及在上述所有实施例中，当UE在slot n时刻接收到指示信息，指示激活某一个服务小区，如果在接收到该指示信息之前，该服务小区已经处于激活态，例如工作在休眠或者是非休眠的BWP上，那么当UE接收到该指示信息的时候，如果该服务小区当前工作的BWP ID与该服务小区从去激活态进入激活态时预先配置的或者是默认的BWP ID相同，那么该服务小区继续工作在当前的BWP上，以及可以在slot n+y5的时刻执行和定时器有关的操作。优选地，y5可以为0，以及优选地，y5的取值小于y2的取值，y5的取值小于y1的取值，y5的取值可以等于y4或者y3的取值。
这里所述地“执行和定时器有关的操作”可以包括启动或者重启定时器，以及停止定时器的运行；定时器可以是上述实施例中提到的任意一个定时器。
在上述这些时刻除了执行和定时器有关地操作外，还可以进行CSI报告(CSI reporting)。
[变形例]
下面，利用图5来说明作为一种变形例的可执行本发明上面所详细描述的用户设备执行的方法的用户设备。
图5是表示本发明所涉及的用户设备UE的框图。
如图5所示，该用户设备UE50包括处理器501和存储器502。处理器501例如可以包括微处理器、微控制器、嵌入式处理器等。存储器502例如可以包括易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器等。存储器502上存储有程序指令。该指令在由处理器501运行时，可以执行本发明详细描述的由用户设备执行的上述方法。
运行在根据本发明的设备上的程序可以是通过控制中央处理单元(CPU)来使计算机实现本发明的实施例功能的程序。该程序或由该程序处理的信息可以临时存储在易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器 系统中。
用于实现本发明各实施例功能的程序可以记录在计算机可读记录介质上。可以通过使计算机系统读取记录在所述记录介质上的程序并执行这些程序来实现相应的功能。此处的所谓“计算机系统”可以是嵌入在该设备中的计算机系统，可以包括操作系统或硬件(如外围设备)。“计算机可读记录介质”可以是半导体记录介质、光学记录介质、磁性记录介质、短时动态存储程序的记录介质、或计算机可读的任何其他记录介质。
用在上述实施例中的设备的各种特征或功能模块可以通过电路(例如，单片或多片集成电路)来实现或执行。设计用于执行本说明书所描述的功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、或其他可编程逻辑器件、分立的门或晶体管逻辑、分立的硬件组件、或上述器件的任意组合。通用处理器可以是微处理器，也可以是任何现有的处理器、控制器、微控制器、或状态机。上述电路可以是数字电路，也可以是模拟电路。因半导体技术的进步而出现了替代现有集成电路的新的集成电路技术的情况下，本发明的一个或多个实施例也可以使用这些新的集成电路技术来实现。
此外，本发明并不局限于上述实施例。尽管已经描述了所述实施例的各种示例，但本发明并不局限于此。安装在室内或室外的固定或非移动电子设备可以用作UE设备或通信设备，如AV设备、厨房设备、清洁设备、空调、办公设备、自动贩售机、以及其他家用电器等。
如上，已经参考附图对本发明的实施例进行了详细描述。但是，具体的结构并不局限于上述实施例，本发明也包括不偏离本发明主旨的任何设计改动。另外，可以在权利要求的范围内对本发明进行多种改动，通过适当地组合不同实施例所公开的技术手段所得到的实施例也包含在本发明的技术范围内。此外，上述实施例中所描述的具有相同效果的组件可以相互替代。

Claims (10)

  1. 一种由用户设备UE执行的方法，包括：
    接收指示所述UE在服务小区上从非休眠带宽片段BWP切换到休眠BWP的指示信息或者指示服务小区进入休眠态的指示信息；
    基于该指示信息，所述UE对该服务小区进行非休眠BWP到休眠BWP的切换，或者将该服务小区切换到预先配置的休眠BWP上；以及
    启动或者重新启动与该服务小区相关联的服务小区去激活定时器。
  2. 一种由用户设备UE执行的方法，包括：
    接收指示所述UE在服务小区上从休眠带宽片段BWP切换到非休眠BWP或者指示服务小区进入非休眠态的指示信息；
    基于该指示信息，所述UE对该服务小区进行休眠BWP到非休眠BWP的切换，或者将该服务小区切换到预先配置的特定的非休眠BWP上；以及
    启动或者重新启动与该服务小区相关联的服务小区去激活定时器。
  3. 一种由用户设备UE执行的方法，包括：
    接收指示所述UE在服务小区上从非休眠带宽片段BWP切换到休眠BWP的指示信息或者指示服务小区进入休眠态的指示信息；
    基于该指示信息，所述UE对该服务小区进行非休眠BWP到休眠BWP的切换，或者将该服务小区切换到预先配置的休眠BWP上；以及
    启动与休眠BWP相关联的定时器，并且停止与该服务小区相关联的服务小区去激活定时器。
  4. 根据权利要求3所述的方法，其中，
    如果启动的与休眠BWP相关联的定时器超时，则该服务小区进入去激活态。
  5. 一种由用户设备UE执行的方法，包括：
    接收指示所述UE在服务小区上从休眠带宽片段BWP切换到非休眠BWP或者指示服务小区进入非休眠态的指示信息；
    基于该指示信息，所述UE对该服务小区进行休眠BWP到非休眠BWP的切换，或者将该服务小区切换到预先配置的特定的非休眠BWP上；以及
    停止已启动的与休眠BWP相关联的定时器，并且启动或者重新启动与该服务小区相关联的服务小区去激活定时器。
  6. 根据权利要求3-5任一项所述的方法，其中，
    所述与休眠BWP相关联的定时器包括BWP不活动定时器和休眠BWP定时器。
  7. 根据权利要求1-5任一项所述的方法，其中，
    将所述指示信息携带在物理下行控制信道PDCCH中。
  8. 根据权利要求1-5任一项所述的方法，其中，
    将所述指示信息携带在预先定义或配置的参考信号中。
  9. 根据权利要求1-5任一项所述的方法，其中，
    将所述指示信息携带在MAC控制元素即MAC CE中。
  10. 一种用户设备，包括：
    处理器；以及
    存储器，存储有指令；
    其中，所述指令在由所述处理器运行时执行根据权利要求1至9中的任一项所述的方法。
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