WO2011120291A1

WO2011120291A1 - Reception method and apparatus for multi-carrier discontinuous scheduling

Info

Publication number: WO2011120291A1
Application number: PCT/CN2010/077629
Authority: WO
Inventors: 施小娟; 黄亚达; 陈思
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-04-01
Filing date: 2010-10-09
Publication date: 2011-10-06
Also published as: CN102215552A

Abstract

A reception method for multi-carrier discontinuous scheduling is provided, which belongs to the technical field of communication. The method comprises: user equipment(UE) checks that multiple carriers are currently in the activated status; the UE configures timer(s) for the multiple carriers; according to the timer status or the discontinuous reception(DRX) process in which the UE is currently, the UE sets the multiple carriers in the DRX active status. Also a reception apparatus for multi-carrier discontinuous scheduling is provided. The method and apparatus can solve the problem that each of the activated carriers can not be ensured to be in the same DRX status after the activation deactivation mechanism is introduced into multiple carriers, thus ensuring the good backward compatibility for a system.

Description

The present invention relates to the field of communications, and in particular to a method and apparatus for receiving multi-carrier discontinuous scheduling. In order to provide a higher data rate to a mobile user, the Long Term Evolution (ALTE) system proposes Carrier Aggregation (CA), which is designed for user equipment with corresponding capabilities ( User Equipment, UE) provides greater bandwidth and increases the peak rate of the UE. In LTE, the maximum downlink transmission bandwidth supported by the system is 20 MHz. Carrier aggregation is to aggregate two or more component carriers (CC) to support a downlink transmission bandwidth greater than 20 MHz and a maximum of 100 MHz. Carrier aggregation is used. The technical LTE-A system is a multi-carrier system. The individual component carriers performing carrier aggregation may be continuous or discontinuous in the frequency domain, as shown in FIG. For discontinuous component carriers, the UE needs to have multiple Radio Receiver architectures to receive downlink data on multiple discontinuous component carriers simultaneously; for component carriers that are continuous in the frequency domain, relative to single carrier systems A wireless receiving device with a maximum bandwidth of 20 MHz, the UE needs to have a wireless receiving device with a maximum bandwidth exceeding 20 MHz to simultaneously receive downlink data on multiple consecutive component carriers, that is, a UE that performs carrier aggregation with respect to a single carrier system. The power consumption will be relatively large. Therefore, considering the bursty characteristics of the service, even if the UE works at the highest rate, it is possible to use up to 5 carriers at most, but in the burst gap, the actual traffic of the UE is rarely or close to zero, if the UE continues Waiting to receive data on multiple carriers will result in higher power overhead. In order to extend the working time of the UE, turn off the wireless receiving device that is not required to be turned on, and reduce unnecessary battery consumption, the concept of carrier activation deactivation is introduced in the LTE-A system. The UE performs data reception only on the activated carrier, such as the physical downlink control channel (PDCCH). For the temporarily unused carrier, the base station deactivates these carriers by displaying command notification or implicit rules. On the activated carrier, the UE does not monitor the PDCCH channel, nor does it receive data on the Physical Downlink Shared Channel (PDSCH), thereby achieving power saving. The UE can work on up to 5 carriers in the connection state. When the base station configures the carrier for the UE, the UE configures a downlink primary carrier (DL PCC) and an uplink primary carrier for the UE through explicit configuration or according to the protocol. (Uplink Primary Component Carrier, UL PCC), DL PCC and UL PCC are collectively referred to as PCC, and other working carriers other than PCC are called Secondary Component Carriers (SCOs), including downlink secondary carriers (DL SCCs) and uplink secondary carriers ( UL SCC), DL SCC can be activated and deactivated, UL PCC and UL SCC can work as long as they are configured, and the deactivation process is not activated. DL PCC will never be deactivated by the base station, and the UE needs to listen to system messages on the DL PCC; The UL PCC is responsible for transmitting the uplink control information of the physical layer, such as uplink feedback to the downlink data, sending an uplink scheduling request (SR), transmitting an uplink channel status indication, etc. The DL PCC and the UL PCC may have a corresponding relationship, that is, the DL PCC. And UL PCC comply with the LTE standard duplex distance, UL PCC is in DL PCC system message block 2 (System Information Block2, SIB2) The specified uplink carrier; or DL PCC and UL PCC can be flexibly configured by the base station. For example, the base station configures two pairs of working carriers for the UE, which are DL CC1+ULCC1 and DL CC2+UL CC2, that is, physically DL CC1+UL CC 1 and DL CC2+UL CC2 can respectively form an independent cell. In order to achieve more flexible scheduling, the base station configures the DL PCC of the UE to be DL CC1 and the UL PCC to be UL CC2. To save the battery/power consumption of the UE, the single carrier The base station in the system may configure a discontinuous reception (DRX) function for the UE by using a Radio Resource Control (RRC) sublayer, and the LTE system is used as an example to control the activity or behavior of the UE to monitor the PDCCH. In the RRC connection state, if DRX is configured, the UE is allowed to monitor the PDCCH discontinuously; otherwise, the UE continuously monitors the PDCCH. During monitoring of the PDCCH, the UE may not allocate resources according to PDCCH signaling or according to pre-configured resources in the PDSCH. The data is received or transmitted on a Physical Uplink Shared Channel (PUSCH). The inventor has found that the activation deactivation mechanism is controlled for a single carrier, and the base station can flexibly activate and deactivate the DL SCC according to the service requirement and the Radio Resource Management (RRM), and the related technology introduces the activation deactivation mechanism. The same DRX state cannot be guaranteed between the activated carriers, and the backward compatibility of the UE cannot be well ensured, and the battery consumption of the UE under multiple carriers cannot be saved well. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method and apparatus for receiving multi-carrier discontinuous scheduling to solve at least the above problems. According to an aspect of the present invention, a method for receiving a multi-carrier discontinuous scheduling is provided, including: a user equipment UE checks that a plurality of carriers are currently in an active state; and the UE configures a timer for the multiple carriers; The UE sets the multiple carriers to be in a DRX active state according to the timer status or the currently discontinuous reception DRX process. According to another aspect of the present invention, a receiving apparatus for multi-carrier discontinuous scheduling is provided, including: an checking module, configured to check that multiple carriers are currently in an active state; and a configuration module, configured to configure the multiple carriers a setting module, configured to set the multiple carriers to be in a DRX active state according to the timer state or a discontinuous reception DRX process currently in operation. Through the present invention, the timer status or the current discontinuous reception DRX process, the multiple carriers in the active state are all set to have the same DRX state, and the activation cannot be guaranteed after the activation deactivation mechanism is introduced in the multi-carrier. The carrier has the same DRX state problem, which ensures good backward compatibility of the system (such as compatible with LTE system). BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of carrier aggregation according to the related art; FIG. 2 is a structural block diagram of a receiving apparatus for multi-carrier discontinuous scheduling according to an embodiment of the present invention; FIG. 3 is another multi-carrier provided by an embodiment of the present invention. FIG. 4 is a flowchart of a method for receiving multi-carrier discontinuous scheduling according to an embodiment of the present invention; FIG. 5 is a schematic diagram of a multi-carrier long DRX process according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a multi-carrier short DRX process in the first scheme; and FIG. 7 is a schematic diagram of a multi-carrier short DRX process in the second embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that In the case of no conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. After the activation deactivation mechanism is introduced in the embodiment of the present invention, each activated carrier has the same DRX state, that is, the same active time and inactivity time are ensured between the respective activated carriers. Based on this, a receiving apparatus for multi-carrier discontinuous scheduling is provided. Referring to FIG. 2, it is a structural block diagram of a receiving apparatus for multi-carrier discontinuous scheduling according to an embodiment of the present invention. The apparatus includes: an inspection module 202, a configuration module 204, and a setup module 206. The checking module 202 is configured to check that multiple carriers are currently in an active state; the configuration module 204 is coupled to the checking module 202, configured to configure a timer for the multiple carriers, and the setting module 206 is coupled to the configuration module 204 for The state or the current discontinuous reception DRX process, setting the above multiple carriers are in the DRX active state. The receiving device of the multi-carrier discontinuous scheduling may be a UE or set on the UE. In the carrier aggregation, the setting module 204 sets the multiple carriers in the active state to have the same DRX state, so that the receiving device (for example, UE) of the multi-carrier discontinuous scheduling can be designed to be simple, and the system is backward. Compatibility (such as compatible with LTE systems), at the same time, this embodiment is relatively simple to modify the protocol specification. According to an embodiment of the present invention, another multi-carrier discontinuous scheduling receiving apparatus is provided. FIG. 3 is a structural block diagram of another multi-carrier discontinuous scheduling receiving apparatus according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes an checking module 202, a configuration module 204, a setting module 206, and a listening module 208. The functions of the checking module 202, the configuration module 204, and the setting module 206 are the same as those of FIG. 2 and will not be described in detail herein. The monitoring module 208 is coupled to the setting module 206 for listening to the physical downlink control channel PDCCH of the multiple carriers in the DRX active state. Preferably, the timer configured by the configuration module 204 of the embodiment may be a duration timer, and the receiving device of the multi-carrier discontinuous scheduling may only configure one duration timer. After the timer configuration is completed, the multi-carrier discontinuous scheduling is performed. The receiving device starts the duration timer in a period of a first duration; during the duration timer operation, the plurality of carriers are set to be in a DRX active state. In the carrier aggregation, in this embodiment, by using the timer state configured by the configuration module 204 or the multiple carriers activated by the current DRX process setting, the same DRX state is enabled, and the multi-carrier discontinuous scheduling receiving device can be enabled (for example, UE) is simple in design, guarantees good backward compatibility (such as compatible with LTE system), and at the same time, the UE listens to the physical of the above multiple carriers in the DRX active state. The downlink control channel PDCCH makes the power consumption of the UE lower, and the modification of the protocol specification in this embodiment is less. A receiving apparatus for the multi-carrier discontinuous scheduling is provided, and a method for receiving a multi-carrier discontinuous scheduling is provided. The method is implemented on the UE as an example. 4 is a flowchart of a method for receiving multi-carrier discontinuous scheduling according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps: Step 402: The UE checks that multiple carriers are currently in an active state; 404: The UE configures a timer for multiple carriers. The timer may be configured for multiple carriers, and a timer may be set for each carrier. Step 406: The UE is based on the timer status or currently located. The discontinuous reception DRX process sets the above multiple carriers to be in a DRX active state. In the embodiment of the present invention, the time other than the DRX active state is defaulted to be the DRX inactive state. It should be noted that, in the embodiment of the present invention, the process of activating and deactivating is not limited. According to the mechanism in the related art, the base station may activate the carrier through explicit signaling or an implicit rule, and may perform explicit signaling or timing. To deactivate the carrier. The embodiment of the present invention further includes: the base station configures a DRX related parameter for the UE by using the RRC sublayer, and the specific parameters include: a duration timer (onDurationTimer); a DRX inactivity timer (drx-InactivityTimer); media access control contention resolution timing (Mac-ContentionResolutionTimer); DRX retransmission timer (drx-RetransmissionTimer), except for receiving the downlink hybrid automatic repeat request (HARQ) process dedicated to the broadcast control channel, each downlink HARQ process is configured with one timer; DRX cycle period ( longDRX-Cycle ); DRX start offset value ( drxStartOf set ) „ Optional, and DRX short cycle timer ( drxShortCycleTimer ) and short DRX cycle ( shortDRX-Cycle ) „ each downlink HARQ process In addition to receiving the downlink HARQ process dedicated to the broadcast control channel, a HARQ RTT Timer is also configured. Preferably, the foregoing configuring the timer for multiple carriers includes: configuring a duration for multiple carriers The timer, the method further includes: using a first duration (eg, a long DRX cycle period or a short DRX cycle period) Starting a duration timer for the cycle; step 406 includes scheduling the timer in duration During the line, the UE sets the above multiple carriers to be in the DRX active state. Preferably, the foregoing configuring the timer for the multiple carriers includes: the UE configuring one DRX inactivity timer drx-InactivityTimer for each of the multiple carriers; the method further includes: after receiving the uplink or downlink first transmission scheduling from the current carrier, the UE The DRx-InactivityTimer of the current carrier is started or restarted. Step 406 includes: when the drx-InactivityTimer of at least one of the multiple carriers is in an operating state, the UE sets the multiple carriers to be in a DRX active state. Preferably, the foregoing configuring the timer for the multiple carriers includes: the UE configuring one drx-InactivityTimer for the multiple carriers; the method further includes: after the UE receives the uplink or downlink first transmission scheduling from any carrier, the UE starts or restarts the drx-InactivityTimer. Step 406 includes: during the operation of the drx-InactivityTimer, the UE sets the multiple carriers to be in a DRX active state. In the DRX active state, the UE listens to the physical downlink control channel PDCCH of the multiple carriers in the activated state. By setting the multiple carriers in the active state to have the same DRX state, the UE can be designed to be simple and ensure good backward compatibility of the system (for example, compatible with the LTE system), and the protocol is The revision of the specification is simpler. To describe the DRX behavior of the UE, the PDCCH subframe is introduced in this embodiment. For a UE operating in a Frequency Divided Duplex (FDD) mode, the PDCCH subframe can represent any subframe; for the time division duplex mode (TDD, Time Divided Duplex ) The working UE, the PDCCH subframe refers only to the downlink subframe and the special subframe including the DwPTS (Downlink Pilot Time Slot). The UE in this embodiment is configured with DRX, and the UE needs to monitor the PDCCH subframe within the DRX active time (Active Time).

The DRX activity time can be decomposed into the following eight sub-processes, and the final DRX activity time is determined by the integration of these eight sub-processes. The following is a brief introduction of the eight sub-processes as follows:

1. Long DRX process: This process is the basic process of DRX. The parameters of the long DRX are configured by the RRC, including the long DRX cycle period (longDRX-Cycle), the DRX start offset value (drxStartOffset), and the duration (onDurationTimer). The UE starts onDurationTimer in a subframe that satisfies the formula [(SFN * 10) + subframe number] modulo (longDRX-Cycle) = drxStartOffset, where SFN is a radio frame, subframe number is a subframe number, and modulo represents a modulo operation. The UE will use the longDRX-Cycle cycle, "wake up periodically" to monitor the PDCCH, and "wake up" the length of the onDurationTimer each time, so that the UE can save power. It can also receive the data that may be sent in time.

2. Short DRX process: Compared with long DRX, the short DRX cycle (small DRX-Cycle) is shorter, and the UE satisfies the formula [(SFN * 10) + subframe number] modulo (shortDRX-Cycle) = (drxStartOffset) modulo ( After shortDRX-Cycle), onDurationTimer is started to perform PDCCH monitoring. To shorten the DRX cycle, the UE can receive the data sent by the base station in time. The base station does not need to wait for a long period to send data to the UE. The trigger condition for the short DRX process is that the drx-InactivityTimer times out or receives the DRX Command sent by the base station. DRX command). The UE continues to be in the short DRX process for a period of time after the data transmission and transmission or after the base station's expectation, and the UE continues to be in the short DRX process, so that the data can be received in time. The short DRX duration is controlled by drxShortCycleTimer, that is, after a period of time, the UE can still enter the long DRX process, which can further reduce power consumption.

3. Activity detection process: The process is triggered by the first transmission of the uplink or downlink received by the PDCCH scheduling, and the length of a drx-InactivityTimer is continued. That is, after the data transmission occurs, the UE is likely to continue to perform data parameters. The UE needs to keep listening to the base station for a period of time, and does not perform DRX sleep during this process.

4. The downlink retransmission waiting process: Due to the characteristics of the HARQ process, after receiving the downlink data scheduling, the UE starts an RTT timer for the HARQ process that receives the downlink data, if the UE does not receive the received data before the RTT timer expires. For successful decoding, the base station needs to wait for the retransmission of the base station. In this process, the UE does not perform DRX sleep. Therefore, after the RTT timer expires, the UE starts a retransmission timer drx-RetransmissionTimer to ensure that the UE is directly in the process of retransmission. Active status.

5. The conflict resolution process: The process is triggered by the Msg3 (Message3, Message 3) of the random access procedure. When the UE is performing random access and needs to wait for the successfully confirmed Msg4 (Message4, Message 4), the UE does not perform DRX. Dormant, in the conflict resolution process, the UE needs to remain active until the conflict resolution process ends, and the process is limited by the mac-ContentionResolutionTimer.

6. SR process: The SR process is used to request the base station to schedule the UE before it transmits data upstream. Before the request is successful, if the uplink grant of the base station is not received, the UE continuously sends thousands of SRs to the base station. In the process, the UE needs to remain active until the success or failure causes the SR pending to end. 7. Uplink retransmission process: During the uplink data transmission process, the UE may not receive the successful response from the base station due to the data transmission failure, and perform uplink retransmission. During this process, the UE needs to remain active until the retransmission ends.

8. The non-contention random access downlink data waiting process, the non-contention random access is usually used to trigger the UE to acquire the uplink synchronization, and then the downlink data can be received. After the non-contention random process is completed, the UE needs to remain active until receiving. Until the downlink of the PDCCH is authorized. The final activity time of this embodiment is determined by the above eight sub-processes, where 1 and 2 do not work at the same time, and 3, 4, 5, 6, 7, and 8 can be concurrent with 1 or 2, and finally, as long as there is a process that needs to be active In the state, the UE maintains the monitoring of the PDCCH in the corresponding subframe. In this embodiment, 1 is defined as a periodic DRX process, 3, 4, 5, 6, 7, 8 are defined as a non-periodic DRX process, and 2 is defined as a non-periodic triggered periodic DRX process, thereby being designed in the LTE MAC. It also takes into account the purpose of saving electricity and efficient transmission. In order to implement the introduction of the activation deactivation mechanism, each activation carrier has the same DRX state, the embodiment of the present invention is different in the characteristics of different DRX sub-processes, and the 4-bar process is set to a UE-specific process and/or carrier-specific process, but If the RRC sublayer is configured with the above DRX parameters, the RRC sublayer may configure the above set of parameters only for the UE, that is, the process of configuring the DRX parameters in the RRC sublayer may continue to use the mechanism of the LTE system, thereby implementing each activated carrier. While having the same DRX state, it ensures good backward compatibility of the RRC protocol. Based on the basic working principle of the existing LTE system DRX, the following describes how to implement the same DRX state between the active carriers in the periodic DRX process, the non-periodic triggering periodic DRX process, and the aperiodic DRX process. Embodiment 1 This embodiment uses a periodic DRX process (that is, a long DRX process) as an example. After a carrier activation deactivation mechanism is introduced in a multi-carrier system, in order to implement the same DRX state between the activated carriers, the implementation is implemented. In the example, the long DRX process is set to a UE-specific process, not a carrier-specific process, ie, the UE starts in a subframe that satisfies the formula [(SFN * 10) + subframe number] modulo (longDRX-Cycle) = drxStartOf set onDurationTimer, during the long DRX process, during the onDurationTimer operation, the DL PCC and all active DL SCCs are active, otherwise the DL PCC and all activated DL SCCs are inactive, thus implementing the active carriers in the long DRX process. The same DRX state between. As shown in FIG. 5, the base station configures three downlink carriers, one PCC and two DL SCCs (DL SCC1 and DL SCC2) for the UE, and the activation times of DL SCC1 and DL SCC2 are as shown by thick solid lines in the figure, and virtual points are shown. The underline indicates that the corresponding carrier is in a deactivated state. The long DRX process is as shown in S501 in the figure. At the time T1 and T3, the UE satisfies the start condition of the onDurationTimer, and the UE starts the timer. During the onDurationTimer operation, the DL PCC and the active DL SCC1 and DL SCC2 are active. At other times, DL PCC and DL SCC1, DL SCC2 are in an inactive state. As shown in FIG. 5, S501, S502, and S503 respectively show DL PCC, DL SCC1 and UE during a long DRX process according to an embodiment of the present invention. The DRX state of DL SCC2, since DL PCC is not deactivated, S501 is also the DRX state of the UE in this embodiment. The UE in this embodiment sets the multiple carriers in the active state to have the same DRX state according to the onDurationTimer in the long DRX process, which can further reduce the power consumption of the UE, and also make the UE design simple and ensure the system is good. For compatibility (such as compatible with LTE systems), at the same time, the modification of the protocol specification in this embodiment is relatively simple. Embodiment 2 This embodiment uses a periodic DRX process (ie, a short DRX process) that is triggered periodically, as an example. After a carrier activation deactivation mechanism is introduced in a multi-carrier system, the same is true for each activated carrier. The DRX state, this embodiment provides the following two schemes to illustrate the receiving method of multi-carrier discontinuous scheduling. Solution 1, the operation of drx-InactivityTimer and drxShortCycleTimer is set to a carrier-specific process. As shown in FIG. 6, the base station configures three downlink carriers, one PCC and two DL SCCs (DL SCC1 and DL SCC2) for the UE, and the activation times of DL SCC1 and DL SCC2 are as shown by thick solid lines in the figure, and virtual points are shown. The underline indicates that the corresponding carrier is in a deactivated state. The long DRX process is the same as that provided in the first embodiment, and is not described in detail in this embodiment. The relationship between the onDurationTimer and the short DRX cycle in the short DRX process is as shown in S602 in the figure, that is, once the short DRX process is enabled, the UE satisfies the formula [(SFN * 10) + subframe number] modulo (shortDRX- Cycle) = (drxStartOf set) The child of modulo (shortDRX-Cycle) starts onDurationTimer. In scenario 1, the operation of drx-InactivityTimer and drxShortCycleTimer is set to carrier. For a specific process, the event triggering of the short DRX is set to a carrier-specific process, and each carrier independently maintains its own drx-InactivityTimer and drxShortCycleTimer. As shown in FIG. 6, the UE receives a downlink scheduling of new data on the DL SCC1 at the time T1. (DL assignment ), the UE starts drx-InactivityTimer-SCCl on DL SCC1, at time T3, drx-InactivityTimer-SCCl times out, the UE enables short DRX process, and starts drxShortCycleTimer-SCCl on DL SCC1. Similarly, at time T2, A downlink scheduling of a new data is received on the DL SCC2, the UE starts drx-InactivityTimer-SCC2 on the DL SCC2, the drx-InactivityTimer-SCC2 times out at the time T4, the UE is re-enabled (because the DRX process is enabled at the time T3), the short DRX process, On the DL SCC2, drxShortCycleTimer-SCC2 is enabled. At time T5, DL SCC2 is deactivated, the UE stops PDCCH monitoring for DL SCC2, and stops drxShortCycleTimer-SCC2. At time T6, DL SCC1 is deactivated, and the UE stops PDCCH monitoring for DL SCC 1. At the same time, stop drxShortCycleTimer-SCC 1. The receiving method of multi-carrier discontinuous scheduling in this scheme is as follows: During operation of the drx-InactivityTimer on any one of the carriers, the UE sets the DL PCC and the DL SCC1 and DL SCC2 in the active state to be active; after any one carrier triggers the short DRX process, during the onDurationTimer operation, the UE will The DL PCC and the DL SCC1 and DL SCC2 in the active state are both set to be active. As shown in FIG. 6, S603, S604, and S605 respectively show that the carrier-specific drx-InactivityTimer and drxShortCycleTimer are set according to the first scheme. DRX state of DL SCC1, DL SCC2 and DL PCC in DRX process, because DL PCC will not be deactivated, so S605 is also the DRX state of the UE in this scheme. Also for the case where DRX COMMAND trigger is enabled to enable short DRX, drxShortCycleTimer can also be set to a carrier-specific timer. When DRX COMMAND is received on any carrier, the UE enables the short DRX process and starts drxShortCycleTimer on the carrier. In this embodiment, after the drxShortCycleTimer expires, the UE will enable the long DRX process. In this solution, preferably, the drxShortCycleTimer on one carrier times out, and the UE determines whether there is a running drxShortCycleTimer on other carriers. If yes, the last drxShortCycleTimer of the UE expires. Long DRX is enabled afterwards. If not, the UE directly initiates the long DRX process. In the short DRX process, the UE in this embodiment configures a drx-InactivityTimer for each carrier. Setting the multiple carriers in the active state to have the same DRX state according to the drx-inactivityTimer can make the UE design simple and ensure good backward compatibility of the system (for example, compatible with the LTE system), and at the same time, the protocol specification is The modification is simpler. Solution 2, the operation of drx-InactivityTimer and drxShortCycleTimer is set to a UE-specific process. As shown in FIG. 7, the base station configures three downlink carriers, one PCC and two DL SCCs (DL SCC1 and DL SCC2) for the UE, and the activation times of DL SCC1 and DL SCC2 are shown by thick solid lines in the figure. The long DRX process is shown in S701 in the figure. The relationship between the onDurationTimer and the short DRX cycle in the short DRX process is shown in S702 in the figure. The process is the same as that in the first one, and will not be described here. In scheme 2, the operation of drx-InactivityTimer and drxShortCycleTimer is set to a UE-specific process, and each UE maintains only one drx-InactivityTimer timer and one drxShortCycleTimer timer, and the short DRX event trigger is still set to a carrier-specific process. As shown in FIG. 7, the long DRX process is the same as that provided in the first embodiment, and is not described in detail in this embodiment. The relationship between the onDurationTimer and the short DRX cycle in the short DRX process is as shown in S702 in the figure, and is the same as in the first scheme, and will not be described in detail here. At the time T1, the UE receives a downlink scheduling of new data on the DL SCC1, and the UE starts the UE-specific drx-InactivityTimer. At time T2, the UE receives a downlink scheduling of new data on the DL SCC2, and the UE restarts the UE-specific drx-InactivityTimer. At time T3, the UE-specific drx-InactivityTimer times out, the UE enables the short DRX process, and turns on the UE-specific drxShortCycleTimer timer.

At time T4 and time T5, DL SCC1 and DL SCC2 are respectively deactivated, the UE stops PDCCH monitoring for DL SCC1 and DL SCC2, but does not perform any operation on UE-specific timers drx-InactivityTimer and drxShortCycleTimer. The receiving method of the multi-carrier discontinuous scheduling in the solution is: In the above process, during the operation of drx-InactivityTimer, the UE sets the DL PCC and the DL SCC1 and DL SCC2 in the active state to be active; any one carrier triggers the short DRX After the process, during the onDurationTimer operation, the UE sets the DL PCC and the DL SCC1 and DL SCC2 in the active state to be active. As shown in FIG. 7, S703, S704, and S705 respectively show that the setting is based on the second scheme. UE-specific drx-InactivityTimer and drxShortCycleTimer, short DRX The DRX state of DL SCC1, DL SCC2, and DL PCC in the process, because DL PCC will not be deactivated, so S705 is also the DRX state of the UE in this scheme. Similarly, for the case where the DRX COMMAND trigger is enabled to enable short DRX, the drxShortCycleTimer can also be set to the UE-specific timer. When DRX COMMAND is received on any one of the carriers, the UE enables the short DRX process and starts drxShortCycleTimer. In the short DRX process, the UE configures only one drx-inactivityTimer in the short DRX process, and sets multiple carriers in the active state to have the same DRX state according to the drx-inactivityTimer, which can make the UE design simple and ensure the system is good. For compatibility (such as compatible with LTE systems), at the same time, this embodiment has fewer modifications to the protocol specification. Embodiment 3 This embodiment uses an aperiodic DRX process as an example. Except for the periodic DRX process of the first embodiment and the periodic DRX process of the non-periodic triggering of the second embodiment, the aperiodic DRX process includes downlink retransmission. Waiting process, conflict resolution process, SR process, uplink retransmission process and non-contention random access downlink data waiting process, how to implement multi-carrier in the above-mentioned aperiodic DRX process after introducing the activation deactivation process respectively The same DRX status is explained. I. The downlink retransmission waiting process is in the multi-carrier system, and each downlink carrier has an independent HARQ entity. In this embodiment, after the carrier activation deactivation mechanism is introduced in the multi-carrier system, In the same DRX state, the downlink retransmission waiting process is set to a process specific to each carrier HARQ process, that is, the RTT timer and the drx-RetransmissionTimer are set to timers specific to each carrier HARQ process, and downlink retransmission is performed on any one carrier. The waiting process is running, that is, there is a drx-RetransmissionTimer running on any HARQ process of any one carrier, and the UE will set the DL PCC and all active DL SCCs to be active. II. The conflict resolution process In the multi-carrier system, the base station can configure the random access resources on the multiple carriers for the UE, in order to implement the same DRX state between the activated carriers after the carrier activation deactivation mechanism is introduced, if the base station allows the UE to be the same At the same time, multiple pairs of uplink and downlink carriers are simultaneously randomly accessed; the UE configures a media access control contention resolution timer mac-ContentionResolutionTimer for each pair of the plurality of pairs of uplink and downlink carriers; the UE sends random access on the uplink carrier. Process message After three Msg3, the UE starts the mac-ContentionResolutionTimer corresponding to the uplink carrier; the UE confirms that at least one mac-ContentionResolutionTimer in the multiple carriers is in the running state, and sets multiple carriers in the activated state to be in the DRX active state; The next mac-ContentionResolutionTimer is set to a carrier-specific timer, and any one carrier has conflict resolution in operation, that is, the mac-ContentionResolutionTimer on any one carrier is running, and the UE will set the DL PCC and all active DL SCCs to be active. status. Or, if the base station allows the UE to perform random access only on a pair of uplink and downlink carriers at the same time, the UE configures a mac-ContentionResolutionTimer for multiple carriers in the activated state; after the UE sends the Msg3 on any one of the uplink carriers, The UE starts the mac-ContentionResolutionTimer; during the operation of the mac-ContentionResolutionTimer, the UE sets multiple carriers to be in the DRX active state. In this case, the mac-ContentionResolutionTimer is set to the UE-specific timer. During the mac-ContentionResolutionTimer operation, the UE will set the DL PCC and all active DL SCCs to be active ^! Big state. In the SR process carrier aggregation, the SR is specified to be sent to the base station on the UL PCC. After receiving the SR sent by the UE, the base station may send the uplink grant to the UE on any of the activated downlink carriers. Therefore, in this embodiment, The SR process is set to a UE-specific process. In the SR process, the UE sets the DL PCC and all the DL SCCs in the active state to be active, that is, the UE is guaranteed to listen to all activated downlink carriers, and the base station is scheduled to be received as soon as possible (ie, received). The uplink grant of the base station), after the introduction of the carrier activation deactivation mechanism, has the same DRX state between the activated carriers. Fourth, the uplink retransmission process

In the LTE system, the UE needs to remain active during the uplink retransmission process until the retransmission is completed. In the multi-carrier system, each uplink carrier has an independent HARQ entity. Therefore, in this embodiment, the uplink retransmission process is set to In the carrier-specific process, the uplink retransmission process is running on any one of the uplink carriers, the UE needs to wait for further uplink retransmission scheduling of the base station, and the UE sets the DL PCC and all the active DL SCCs to be active to ensure that the UE is as soon as possible. The uplink retransmission scheduling of the base station is obtained, and at the same time, the carrier DR activation deactivation mechanism is introduced, and each activated carrier has the same DRX state. V. Non-contention random access downlink data waiting process In the multi-carrier system, after the UE completes the uplink synchronization on the pair of uplink and downlink carriers, the base station can send the downlink 4 to the UE on any of the activated downlink carriers. Therefore, in this embodiment, the non-contention random access downlink is performed. The data waiting process is set to a UE-specific process. During the non-contention random access downlink data waiting process, the UE sets the DL PCC and all the active DL SCCs to be active, and implements the activation after the carrier activation deactivation mechanism is introduced. The carriers have the same DRX state. In the aperiodic DRX process, the UE sets the multiple carriers in the active state to have the same DRX state, and can further save the power of the UE in addition to the requirements of each carrier. In this embodiment, the UE can be designed in a simple manner to ensure good backward compatibility of the system (for example, compatible with the LTE system). At the same time, the modification of the protocol specification in this embodiment is less. As can be seen from the above description, the embodiment of the present invention achieves the following technical effects: The UE sets multiple carriers in an active state to the same DRX state, which can further save power consumption of the UE, and at the same time ensure good system performance. Backward compatibility (eg compatible with LTE systems). Obviously, those skilled in the art should understand that 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. Alternatively, they 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. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, 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 scope of the present invention are intended to be included within the scope of the present invention.

Claims

A method for receiving a multi-carrier discontinuous scheduling, comprising:

The user equipment UE checks that multiple carriers are currently in an active state;

The UE configuring a timer for the multiple carriers;

The UE is in the timer state or the discontinuous reception DRX process currently in the process, and the multiple carriers are set to be in a DRX active state.

2. The method of claim 1 wherein

The configuring, by the UE, the timers for the multiple carriers includes: configuring, by the UE, a duration timer for the multiple carriers;

After the UE configures a duration timer for the multiple carriers, the method further includes: the UE starting the duration timer by using a first duration;

Setting, by the UE, that the multiple carriers are in a DRX active state according to the timer status includes: during the duration timer operation, the UE sets the multiple carriers to be in the DRX activity. state.

3. The method of claim 1 wherein

The configuring a timer for the multiple carriers by the UE includes: the UE configuring a DRX inactivity timer drx-InactivityTimer for each of the multiple carriers;

After the UE configures one DRX inactivity timer drx-inactivityTimer for the multiple carriers, the method further includes: after receiving the uplink or downlink first transmission scheduling from the current carrier, the UE starts or restarts the Current carrier drx-InactivityTimer;

The setting, according to the timer status, that the multiple carriers are in a DRX active state, includes: when a drx-inactivityTimer of at least one of the multiple carriers is in an operating state, the UE sets the multiple The carriers are all in the DRX active state.

4. The method of claim 1 wherein

The configuring, by the UE, the timers for the multiple carriers includes: the UE is the multiple carriers, and the DRx-InactivityTimer; After the UE configures one drx-inactivityTimer for the multiple carriers, the method further includes: after the UE receives an uplink or downlink first transmission scheduling from an arbitrary carrier, the UE starts or restarts the drx-InactivityTimer ;

The setting, according to the timer status, that the multiple carriers are in a DRX active state, includes: during the operation of the drx-InactivityTimer, the UE sets the multiple carriers to be in the DRX active state. The method according to claim 1, wherein the setting, by the UE, that the multiple carriers are in a DRX active state according to the discontinuous reception DRX process currently in the process comprises: the UE confirming the multiple carriers At least one carrier is in a downlink retransmission waiting process, and the UE sets the multiple carriers to be in the DRX active state. The method of claim 1 wherein

The base station allows the UE to perform random access on multiple pairs of uplink and downlink carriers at the same time, and the UE configuring the timers for the multiple carriers includes: the UE is each pair of the multiple pairs of uplink and downlink carriers respectively Configuring media access control to resolve the timer mac-ContentionResolutionTimer;

After the UE is configured with the media access control contention resolution timer mac-ContentionResolutionTimer for each of the pairs of uplink and downlink carriers, the method further includes: the UE sending random access on the uplink carrier After the message Msg3 of the process, the UE starts the mac-ContentionResolutionTimer corresponding to the uplink carrier;

The setting, by the UE, that the multiple carriers are in a DRX active state according to the timer status, includes: the UE confirming that at least one of the multiple carriers is in a running state, and setting the multiple The carriers are all in the DRX active state. The method of claim 1 wherein

The base station allows the UE to perform random access only on a pair of uplink and downlink carriers at the same time, and the UE configuring a timer for the multiple carriers includes: configuring, by the UE, a mac-ContentionResolutionTimer for the multiple carriers;

After the UE configures a mac-ContentionResolutionTimer for the multiple carriers, the method further includes: after the UE sends the Msg3 on any one of the uplink carriers, the UE starts the mac-ContentionResolutionTimer; The setting, by the UE, that the multiple carriers are in the DRX active state according to the timer status, includes: during the running of the mac-ContentionResolutionTimer, the UE sets the multiple carriers to be in the DRX active state.

The method according to claim 1, wherein the setting, by the UE, that the multiple carriers are in a DRX active state according to the currently discontinuous receiving DRX process comprises: the UE confirming that the current scheduling request is The SR process sets the plurality of carriers to be in the DRX active state.

The method according to claim 1, wherein the setting, by the UE, that the multiple carriers are in a DRX active state according to the currently discontinuous receiving DRX process comprises: the UE confirming that there is at least one uplink The carrier is in an uplink retransmission process, and the multiple carriers are set to be in the DRX active state.

The method according to claim 1, wherein the setting, by the UE, that the multiple carriers are in a DRX active state according to the currently discontinuous receiving DRX process comprises: the UE confirming that the current is in a non-existent manner The random access downlink data waiting process is set, and the multiple carriers are set to be in the DRX active state.

The method according to any one of claims 1-10, wherein the method further comprises: in the DRX active state, the UE listening to a physical downlink control channel PDCCH of the multiple carriers.

A receiving device for multi-carrier discontinuous scheduling, wherein the device comprises:

An inspection module, configured to check that multiple carriers are currently active;

a configuration module, configured to configure a timer for the multiple carriers;

And a setting module, configured to set the multiple carriers to be in a DRX active state according to the timer state or a discontinuous reception DRX process currently in operation.

The device according to claim 12, wherein the device further comprises: a monitoring module, configured to monitor a physical downlink control channel PDCCH of the multiple carriers in the DRX active state.