WO2011120449A1

WO2011120449A1 - Method and device for deactivating carriers

Info

Publication number: WO2011120449A1
Application number: PCT/CN2011/072435
Authority: WO
Inventors: 赵亚利; 许芳丽; 杨晓东
Original assignee: 电信科学技术研究院
Priority date: 2010-04-02
Filing date: 2011-04-02
Publication date: 2011-10-06
Also published as: CN102104465A; CN102104465B

Abstract

A method and a device for deactivating carriers are provided, which are applied to a multi-carrier system. The method includes steps as follows: maintaining a carrier deactivation timer, according to data on a down-link secondary component carrier (DL SCC) and transmission requirement of control information; deactivating the DL SCC, if the carrier deactivation timer expires.

Description

Carrier deactivation method and device

This application is required to be submitted to the China Patent Office on April 2, 2010, application number 201010141126.2, the Chinese patent application titled "Carrier Deactivation Method and Equipment", and submitted to the China Patent Office on August 6, 2010. The priority of the Chinese Patent Application No. 2010 1024 688 3.6, the entire disclosure of which is incorporated herein by reference. Technical field

The present invention relates to the field of communications, and in particular, to a method and device for carrier deactivation. Background technique

In a shared channel-based mobile communication system, such as LTE (Long Term Evolution), the transmission of uplink and downlink data is controlled by an eNB (evolved Node-B, base station) scheduler, when the scheduler determines to schedule a user. The control channel will be notified of the resources on which the terminal transmits or receives data. The UE (User Equipment, Terminal) listens to the control channel, and when it detects that it contains its own scheduling information, completes the transmission (uplink) or reception (downlink) of the data according to the indication on the control channel. In the active state, since the terminal is not sure when the eNB schedules it, a common mode of operation is that the terminal continuously monitors the control channel and parses each subframe including its downlink scheduling control channel to determine Whether it is scheduled. This mode of operation can achieve higher efficiency when the amount of data in the terminal is large and may be frequently scheduled. However, for some services, the frequency of data arrival is low, and the number of times the terminal is scheduled is also small. If the terminal still monitors the control channel continuously, it will undoubtedly increase its power consumption. In order to solve the power consumption problem, the LTE system adopts a DRX (Discontinuous Reception) working mode. In this mode of operation, the terminal periodically monitors the control channel to achieve power saving.

The basic principle of DRX is shown in Figure 1. The On duration indicates the time period during which the UE listens to the control channel. The RF channel is opened and the control channel is continuously monitored. When the time other than On duration is removed, the UE is in Sleep. State, its RF The link will be shut down and the control channel will no longer be monitored for power saving purposes. On Duration is a cyclical (Cycle), and the specific period is implemented by the eNB.

The DRX mechanism of LTE considers the arrival model of data services, that is, the arrival of data packets is bursty (it can be understood that once a data packet arrives, more packets arrive in a shorter time). In order to adapt to this service arrival feature, the LTE DRX process uses a variety of timers and is combined with the HARQ (Hybrid-ARQ, hybrid automatic repeat request) process to achieve better power saving performance.

The timers used in the LTE DRX process include:

On duration timer: The UE periodically wakes up to continuously monitor the control channel during the On duration, as shown in Figure 1.

Short DRX cycle Timer: In order to better match the arrival of data services, the LTE system allows two DRX cycles to be configured: long cycle and short cycle. The on duration timers of the two cycles are the same, but the sleep time is different. In the short cycle, the sleep time is relatively shorter, and the UE can listen to the control channel again more quickly. The Long cycle must be configured and is the initial state of the DRX process; the short cycle is optional. The short DRX cycle timer sets the duration of the short cycle. After the Short cycle timer expires, the UE will use the Long cycle.

drx-Inactivity timer: After the DRX is configured, the UE turns on the timer when the UE receives the control signaling of the initial transmission of the HARQ in the time when the active control channel is allowed to be monitored. The UE continuously monitors the control before the timer expires. channel. If the UE receives the control signaling of the initial HARQ transmission before the drx-Inactivity timer expires, it will terminate and restart the drx-Inactivity timer.

HARQ RTT (Round-Trip Time) timer: It is only applicable to DL (Downlink). It makes it possible for the UE to not monitor the control channel before the next retransmission, so as to achieve better power saving effect. The UE will turn on this timer if it receives control signaling for HARQ transmission (initial transmission or retransmission). If the data in the corresponding HARQ process is unsuccessful after the previous HARQ transmission (the UE feeds back NACK), after the HARQ RTT timer expires, the UE turns on the drx-Retransmission timer. :3⁄4 The result of the data in the HARQ process is successfully decoded after the previous HARQ transmission (UE feedback ACK), in HARQ After the RTT timer expires, the UE does not start the drx-Retransmission timer. ^ The system currently only has the HARQ RTT timer running, and the UE does not listen to the control channel.

drx-Retransmission timer: Applies only to DL. During the drx-Retransmission timer, the UE listens for control signaling and waits for retransmission scheduling of the corresponding HARQ process. The timer is stopped once a schedule for retransmission is received.

Figure 2 shows the working process and relationship of the above timers. At time t1 between on duration, the eNB schedules the initial transmission for process 1, and the UE then opens the drx-Inactivity timer and the corresponding HARQ RTT timerl. Since the initial transmission decoding of Process 1 is unsuccessful, after the HARQ RTT timer expires, the UE opens the drx-Retransmission timerl.

At time t2, the eNB schedules the initial transmission for Process 2, the drx-Inactivity timer is restarted, and the HARQ RTT timer2 for Process 2 is opened.

At time t3 before the drx-Retransmission timerl expires, the UE receives a retransmission for Process 1, then terminates drx-Retransmission timerl and opens HARQ RTT timerl.

After the HARQ RTT timer2 times out, since the initial transmission of Process 2 is not decoded successfully, the UE turns on drx-Retransmission timer2. At time t4 before drx-Retransmission timer2 times out, the eNB schedules a retransmission of Process 2, and then the UE terminates drx-Retransmission timer2 and turns on HARQ RTT timer2.

At time t5 before the drx-Retransmission timerl timeout, the eNB continues to schedule the retransmission of Process 1, and then the drx-Retransmission timerl is terminated and the HARQ RTT timerl is started. Before the HARQ RTT timer2 times out, the UE successfully decodes the data in Process 2, and then feeds back the ACK to the eNB, and after the HARQ RTT timer2 timeout, the drx-Retransmission timer 2 is not started. Similarly, before the HARQ RTT timerl times out, the UE successfully decodes the data in Process 1, and then feeds back an ACK to the eNB. After the HARQ RTT timerl expires, the drx-Retransmission timerl is no longer started.

Through the above process, it can be seen that in the On duration Timer ^ drx-Retransmission timer and the drx-Inactivity timer, any timer is running, and the UE will Monitor the control channel. The time at which the UE listens to the control channel is also called Active Time. The behavior of the UE is determined by the interaction of the timers.

In LTE and previous wireless communication systems, there is usually only one (or a pair) of carriers in each cell, and the UE can only transmit and receive data in one cell (on the carrier) at the same time. The maximum bandwidth of the carrier in the LTE system is 20 MHz, as shown in Figure 3. In the LTE Advanced (LTE-A) system, the peak rate of the system is much higher than that of LTE. It is required to achieve downlink lGbps, uplink 500Mbps, and 20MHz transmission bandwidth cannot meet this requirement. In order to provide a higher transmission rate, the LTE-A system adopts a carrier aggregation technology, that is, the UE can simultaneously aggregate multiple component carriers and simultaneously perform data transmission on these carriers, thereby increasing the data transmission rate. In order to ensure that the LTE UE can work under each aggregated carrier, each carrier does not exceed 20 MHz at the maximum. The CA technology in LTE-A is shown in Figure 4. In the LTE-A system shown in FIG. 4, the number of carriers that can be aggregated by the UE is four, and the network side can perform data transmission with the UE on four carriers at the same time.

In a multi-carrier system, the base station can configure a CC (Working Carrier) set for the UE according to the sum of the maximum rates of all services requested by the UE. In the CC set configured for the UE, the system selects one CC as the primary component carrier (PCC) of the UE based on the UE, and the other CCs in the configured carrier set are called SCC (Secondary Component Carrier). Note: The PCC of different UEs may be different.

In the LTE-A system, DRX is also defined for power saving. Currently, the definition of DRX in LTE-A is as follows: The UE uses the same DRX operation for all configured carriers, such as the same PDCCH active time, the definition. It just shows the same active time on each CC, and does not define the details of how the DRX timer operates. Based on the above definitions, DRX has the following two understandings:

Understanding the DRX mechanism 1 is shown in Figure 5:

Configure the CC set as a whole, that is, it can be regarded as a CC. The DRX timer is configured and maintained as follows:

On duration timer: Configures the on duration of all CCs in the CC set to be consistent for the UE configuration.

Short DRX cycle Timer: Configure all CCs in the CC set for UE configuration. To. After the Short cycle timer expires, the UE will use the Long cycle.

drx-Inactivity timer: For the UE configuration, the UE starts the timer by receiving the control signaling of the initial transmission of the HARQ on any CC in the CC set in the active time, and the UE continuously listens to all the activations before the timer expires. Control channel on the CC. If the UE receives the control signaling of the initial HARQ transmission on any CC in the active CC set before the drx-Inactivity timer expires, the drx-Inactivity timer will be restarted.

HARQ RTT timer: For process configuration, only for DL, the UE will start the timer if it receives control signaling of HARQ transmission (initial transmission or retransmission) on any CC in the activated CC set. If the data in the corresponding HARQ process is unsuccessful after the previous HARQ transmission (the UE feeds back NACK), after the HARQ RTT timer expires, the UE will open the drx-Retransmission timer. If the data in the corresponding HARQ process is successfully decoded after the previous HARQ transmission (the UE feeds back the ACK), after the HARQ RTT timer expires, the UE does not start the drx-Retransmission timer. ^ The system currently only has the HARQ RTT timer running, and the UE does not. Monitor the control channel.

drx-Retransmission timer: For process S, it is only applicable to DL. During the drx-Retransmission timer, the UE listens for control signaling and waits for retransmission scheduling of the corresponding HARQ process. The timer is stopped upon receipt of a schedule for retransmission of the process. Although the drx-Retransmission timer is controlled for one process, as long as the drx-Retransmission timer on any CC is running, the UE will listen to the PDCCH on all active CCs.

Based on the above understanding, according to the LTE specification, the active time of the UE includes the following time: On Duration Timer or drx-Inactivity timer or drx-Retransmission timer or mac-contentionResolutionTimer (race resolution timer) running time;

Waiting for UL (Up Link) scheduling after transmitting SR (scheduling request) on the PUCCH (Physical Uplink Control Channel) of the PCC;

The time at which any one of the DL CCs in the set may have uplink retransmission scheduling signaling on the corresponding UL CC may be configured; For a non-contention random access, a time when the UE receives a RAR (random access response) to wait for receiving scheduling signaling for a new transmission of the UE C-RNTI;

The DRX mechanism understands 2 as shown in Figure 6:

At least the drx-inactivity timer, the HARQ RTT timer, and the drx-Retransmission timer are based on CC maintenance. As long as any CC is active time, other CCs are also active time. The timer operates as follows:

On duration timer: For the UE configuration, all CCs are consistent.

Short DRX cycle Timer: For UE configuration, all CCs are consistent. After the Short cycle timer expires, the UE will use the Long cycle.

drx-Inactivity timer: For the CC configuration, the UE starts the timer by receiving the control signaling of the initial transmission of the HARQ on the corresponding CC in the active time. Before the timer expires, the UE continuously monitors the control channel on the corresponding CC. If the UE receives the control signaling of the initial HARQ transmission on the corresponding CC before the drx-Inactivity timer expires, the drx-Inactivity timer is terminated and restarted on the CC and the DL CC that schedules it. Although the drx-Inactivity timer is controlled for one CC, as long as the drx-inactivity timer on any CC is running, the UE will listen to the PDCCH on all active CCs.

HARQ RTT timer: For process configuration, only for DL, if the UE receives control signaling of HARQ transmission (initial transmission or retransmission) on the corresponding CC, the timer will be started. If the data in the corresponding HARQ process is not successfully decoded after the previous HARQ transmission (the UE feeds back NACK), after the HARQ RTT timer expires, the UE turns on the drx-Retransmission timer. If the data in the corresponding HARQ process is successfully decoded after the previous HARQ transmission (the UE feeds back the ACK), after the HARQ RTT timer expires, the UE does not start the drx-Retransmission timer. If only the HARQ RTT timer is currently running, the UE does not listen to the control channel.

drx-Retransmission timer: For process S, it is only applicable to DL. During the drx-Retransmission timer, the UE listens for control signaling and waits for retransmission scheduling of the corresponding HARQ process. The timer is stopped upon receipt of a schedule for retransmission of the process. Although the drx-Retransmission timer is controlled for one process, as long as any one The drx-Retransmission timer on each CC operates, and the UE will monitor the PDCCH on all activated CCs.

In this understanding, the active time of the UE includes the following times:

On Duration timer or any CC has drx-Inactivity timer or drx-Retransmission timer or mac-contentionResolutionTimer running time;

The time at which the UL scheduling is waited after the SR (scheduling request) is sent on the PUCCH of the PCC;

It is possible that there is a time on any DL CC in the configuration set for the uplink retransmission scheduling signaling on the corresponding UL CC;

For non-contention random access, the time when the UE receives a RAR (random access response) to wait for receiving scheduling signaling for a new transmission of the UE C-RNTI.

Since the service of the UE has volatility and burstiness, that is, the traffic volume is less than 4 during a certain period of time, and the traffic volume is large during a certain period of time, when the UE traffic is relatively small, in order to save power, The UE in the CC set can be further configured to perform the carrier activation/deactivation operation according to the current service condition of the UE. For the deactivated carrier, the UE does not need to monitor the PDCCH again, so that a better power saving effect can be achieved.

The LTE-A system stipulates that the PCC of the UE does not allow activation/deactivation, and is always activated by default, and the SCC in the configuration CC set is deactivated by default. If these SCCs are needed, the carrier activation operation needs to be performed first. The current protocol has stipulated that the carrier activation/deactivation operation in the multi-carrier system can be performed in an explicit manner, that is, using a carrier activation/deactivation MAC CE (MAC control element). In this manner, the eNB controls the UE to activate and deactivate the SCC through RRC signaling. In this manner, a new RRC message and a corresponding control process need to be defined, signaling overhead and complexity are increased, and carrier activation and de-assertion are performed through the RRC message. The delay of the active mode control is relatively long. In addition to the explicit method, the protocol also supports the implicit deactivation mechanism, but the implicit deactivation method is still under discussion and there is no clear conclusion. Summary of the invention

Embodiments of the present invention provide a method and device for carrier deactivation to implement implicit deactivation in a multi-carrier system.

The embodiment of the invention provides a method for carrier deactivation, which is applied to a multi-carrier system, and the method includes:

Maintaining a carrier deactivation timer according to the data and control information transmission requirements on the downlink secondary carrier DL SCC;

If the carrier deactivation timer expires, the DL SCC is deactivated. An embodiment of the present invention provides a user terminal, including:

a maintenance unit, configured to maintain a carrier deactivation timer according to data and control information transmission requirements on the downlink secondary carrier DL SCC;

The deactivation unit is configured to deactivate the corresponding DL SCC if the carrier deactivation timer expires. Compared with the prior art, the embodiment of the invention has at least the following advantages:

Maintaining a carrier deactivation timer according to data and control information transmission requirements on the downlink secondary carrier DL SCC, and deactivating the corresponding DL SCC when the carrier deactivation timer expires, thereby providing an implicit deactivation mechanism in the LTE-A system . DRAWINGS

1 is a schematic diagram of a basic principle of a DRX in the prior art;

2 is a schematic diagram of a working process and a mutual relationship of a timer in the prior art; FIG. 3 is a schematic diagram of a carrier bandwidth in an LTE system in the prior art;

4 is a schematic diagram of a CA technology in LTE-A in the prior art;

FIG. 5 is a schematic diagram of an understanding of the DRX mechanism in the prior art; FIG.

6 is a schematic diagram of the DRX mechanism understanding 2 in the prior art;

7 is a maintenance manner of a de-activation timer in the first case of the embodiment of the present invention. Schematic diagram

8 and FIG. 9 are diagrams showing an example of an implicit deactivation method in the first case; FIG. 10 is a schematic diagram of a de-activation timer maintenance mode in the second case of the embodiment of the present invention;

11 and FIG. 12 are diagrams showing an example of an implicit deactivation method in the second case; FIG. 13 is a schematic diagram of a de-activation timer maintenance mode in the third case of the embodiment of the present invention;

14 and FIG. 15 are diagrams showing an example of an implicit deactivation method in a third case; FIG. 16 is a schematic diagram of another de-activation timer maintenance mode in the third case of the embodiment of the present invention;

17 is a schematic diagram of a de-activation timer maintenance mode in a fourth embodiment of the present invention;

18 and FIG. 19 are diagrams showing an example of an implicit deactivation method in the fourth case; FIG. 20 is a schematic diagram of another de-activation timer maintenance mode in the fourth case of the embodiment of the present invention;

FIG. 21 is a schematic structural diagram of a user terminal according to an embodiment of the present invention. detailed description

In the method of carrier deactivation provided by the embodiment of the present invention, the time length configuration of the de-activation timer is first introduced. The length of the de-activation timer is configured by RRC signaling. The specific configuration includes the following two types:

1) based on CC configuration;

2) Based on UE configuration.

Specifically, the length of the de-activation timer is configured through RRC signaling. That is, the base station eNB sends the RRC signaling carrying the time length information of the de-activation timer to the user terminal, and the user terminal acquires the RRC signaling and configures the length of the corresponding de-activation timer. The length of the de-activation timer can be configured based on the UE or based on the CC configuration. The length of the de-activation timer configured on the user terminal is based on the CC configuration. For each DL SCC, the length of the de-activation timer is set separately, so that the user terminal can flexibly control the time for each DL SCC to be deactivated. Based on the UE configuration, the de-activation timer length configured on the user terminal is applicable to all DL SCCs.

It should be noted that the length of time configured for the de-activation timer needs to be at least longer than the HARQ RTT, and there is a certain margin to ensure that the UE will not be deactivated before it can receive the scheduling signaling for retransmission. The following is a method for performing implicit carrier deactivation using a timer provided in the embodiment of the present invention by using a de-activation timer.

Whether the de-activation timer is based on the UE or the CC-based configuration and whether the UE is configured with the DRX or the de-activation timer is not the same. The following describes the possible maintenance mode of the de-activation timer for different scenarios. First, the first case is introduced. The de-activation timer is based on the UE configuration. At this time, the de-activation timer is based on the UE maintenance, and the de-activation timer maintenance mode is shown in Figure 7, which includes:

Step 701: The UE starts/restarts a de-activation timer of the UE after receiving the DL initial transmission or retransmission scheduling signaling for any one DL SCC.

In addition, optionally, the UE may also start/restart the de-activation timer after receiving the initial signaling for the UL CC or the scheduling signaling of the retransmission on any one of the DL SCCs. In addition, the UE is on any one of the DL SCCs. After receiving the initial transmission for the UL CC or the HARQ feedback of the retransmission is NACK, start/restart the de-activation timer of the UE, where the UL CC may be any UL CC.

It should be noted that the UE may start or restart the de-activation timer according to one of the foregoing methods for starting/restarting the de-activation timer of the UE. (Starting/re-selecting in the embodiment of the present invention indicates that the UE starts or re-selects. Pass), you can also start or restart the de-activation timer according to any two or three of them. Step 702: When the de-activation timer expires, if any DL SCC can schedule the UL CC to have process data hangs (that is, there is data in the HARQ buffer), the shell ¹ J restarts the de-activation timer.

It should be noted that the UE may be combined with any one or more of the methods of starting or restarting the de-activation timer in step 701 according to the manner of restarting the de-activation timer in this step, or may be restarted in this step separately. -activation timer mode.

Step 703: When the de-activation timer expires, all DL sccs of the UE are deactivated.

For example, assume that three DL CCs are configured for the UE, labeled CC1, CC2, and CC3, where CC1 is DL PCC, CC2 and CC3 are DL SCC, as shown in Figure 8, de-activation timer maintenance and implicit go The activation mechanism is as follows:

T1: The UE receives the scheduling signaling for the downlink of CC1 and the data transmission of the corresponding downlink process 1 on CC1. The data block transmitted by the downlink process 1 of CC1 includes a carrier activated MAC CE, and the MAC CE can activate carriers CC2 and CC3. ;

T2: Because the downlink data of process 1 on CC1 includes the carrier activation MAC CE that activates CC2 and CC3, CC1 and CC3 should be activated after the UE parses the data packet, and the UE starts the de-activation timer;

T3: The UE receives the scheduling for the initial transmission of process 1 on CC2, at which time the UE should restart the de-activation timer;

T4: The UE receives the scheduling for the initial transmission of the process 1 on the CC3, and the UE should restart the de-activation timer;

T5: The initial transmission of process 1 on CC3 is successful before the de-activation timer of the UE is timed out;

T6: The UE receives the scheduling signaling for the retransmission of the process 1 on the CC2 at time T6, and restarts the de-activation timer;

T7: The process 1 of the UE on CC2 is successfully transmitted before the de-activation timer of the UE is timed out;

T8: The UE's de-activation timer expires at the time of T8 and at this time There is no process hang on the UL CC that can be scheduled by the DL SCC, so the UE can implicitly deactivate all activated DL SCCs, that is, CC2 and CC3 at time T8.

In the first case, the maintenance mode of the de-activation timer can also be:

The scheduling signaling of the DL initial transmission received by the UE for any one DL SCC needs to start/restart the de-activation timer of the UE. In addition, optionally, the UE receives the scheduling of the initial transmission for the UL CC on any one DL SCC. After the signaling, the de-activation timer of the UE may be started/restarted, and the UE may start/restart the de-activation timer of the UE according to one of the two methods of starting/restarting the de-activation timer of the UE. It is also possible to start/restart the de-activation timer of the UE according to the two methods at the same time. When the UE's de-activation timer expires, all DL SCCs of the UE are deactivated. It should be noted that the length of the de-activation timer is required to be long enough in this manner, and it is necessary to ensure that all the DL SCCs of the UE and the initial transmissions and weights of all UL CCs that can be scheduled before the UE's de-activation timer expires. Passing can be redundant.

For example, it is assumed that the UE is configured with three DL CCs, which are labeled as CC1, CC2, and CC3, respectively, where CC1 is DL PCC, CC2 and CC3 are DL SCC, and the maintenance of the 'de deactivation timer and the implicit deactivation mechanism are as follows. As shown in FIG. 9, the difference from FIG. 8 is that T4 and T8, T4 does not need to restart the de-activation timer for retransmission, and T8 only needs to judge whether the de-activation timer expires. In the second case, the de-activation timer is based on the CC configuration, and the de-activation timer is based on the CC maintenance. The de-activation timer is maintained as shown in Figure 10, including:

Step 1001: The UE receives the scheduling signaling of the DL initial transmission or retransmission for any one DL SCC, and starts or restarts the de-activation timer on the DL SCC and the DL SCC that schedules the DL SCC.

Step 1002: The UE starts or restarts a de-activation timer corresponding to the DL SCC after receiving scheduling signaling for initial transmission or retransmission of a certain UL CC on a certain DL SCC, and/or the UE is in a certain DL SCC. Received on a UL CC After the initial transmission or the retransmitted HARQ feedback is NACK, the de-activation timer corresponding to the DL SCC is started or restarted.

It should be noted that this step is an optional step, and step 1003 can be directly executed without performing this step.

Step 1003: When the de-activation timer of a certain DL SCC is about to expire, if the process data of the UL CC that can be scheduled by the DL SCC is suspended, the de-activation timer corresponding to the DL SCC is restarted.

It should be noted that the UE may use the method of restarting the de-activation timer in this step in combination with any one or more of the steps of starting or restarting the de-activation timer in step 1002, or may use the restart in this step separately. -activation timer mode.

It should be noted that this step is an optional step, and step 1004 can be directly executed without performing this step.

Step 1004: Deactivate the DL SCC when a de-activation timer of a DL SCC times out.

In this way, it should be noted that if any DL SCC is activated, the UE needs to start the de-activation timer for the CC.

For example, the UE is configured with three DL CCs, labeled CC1, CC2, and CC3, where CC1 is DL PCC, CC2 and CC3 are DL SCC, and CC-based de-activation timer maintenance mechanism: 3⁄4. As shown in Figure 11, the de-activation timer maintenance and implicit deactivation mechanisms include:

T1: The UE receives the scheduling signaling for the CC1 downlink and the data transmission of the corresponding downlink process 1 on the CC1. The data block transmitted by the downlink process 1 of the CC1 includes a carrier activated MAC CE, and the MAC CE can activate the carriers CC2 and CC3. ;

T2: Since the downlink data of process 1 on CC1 includes the carrier activation MAC CE that activates CC2 and CC3, CC1 and CC3 should be activated after the UE parses the data packet, and the UE starts its corresponding for DL CC2 and CC3 respectively. Deactivate the timer de-activation timer2 and de-activation timer3;

T3: The UE receives the scheduling for the initial transmission of process 1 on CC2 at time T3. At this time, the UE should restart the deactivation timer de-activation timer2 corresponding to CC2;

T4: The UE receives the scheduling of the initial transmission of the process 1 on the CC3 at time T4. At this time, the UE should restart the deactivation timer deactivation timer corresponding to CC3;

T5: The initial transmission of process 1 on CC3 is successful before CC3's de-activation timer3 has timed out;

T6: The UE receives the scheduling signaling for the retransmission of the process 1 on the CC2 at the time of the T6, and the UE should restart the deactivation timer de-activation timer 2 corresponding to the CC2;

T7: The process 1 of the UE on CC2 is successfully transmitted before the de-activation timer2 of CC2 is timed out;

T8: At time T8, the UE's de-activation timer 3 on CC3 times out and at this time no process data hangs on the UL CC that the DL SCC can schedule, so CC3 can be implicitly deactivated at time T8;

T9: At time T9, the UE's de-activation timer 2 on CC2 times out and at this time there is no process pending on the UL CC that the DL SCC can schedule, so CC2 can be implicitly deactivated at time T9.

In the second case, the maintenance mode of the de-activation timer can also be:

The UE receives scheduling signaling for the initial transmission on the DL SCC or its schedulable DL SCC on a certain DL SCC, and then starts/restarts the de-activation timer on the DL SCC and its scheduled DL SCC; Optionally, when the UE receives the scheduling signaling for the initial transmission of any one of the UL CCs on a certain DL SCC, the UE starts/restarts the de-activation timer of the UE on the DL SCC; and the above two startup/restart The de-activation timer can be used alone or in combination. When the de-activation timer of the UE on a certain DL SCC times out, the DL SCC is deactivated.

It should be noted that in this manner, the de-activation timer is required to be long enough to ensure the initial transmission of the UE on the DL SCC and all DL or UL CCs that it can schedule before the de-activation timer expires on the DL SCC. Retransmission can be done. In this way, it should also be noted that any UE DL SCC is activated to start or restart the UE's de-activation timer on the DL SCC.

For example, set the UE to configure three DL CCs, labeled CC1, CC2, and CC3, where CCl is DL PCC, CC2 and CC3 are DL SCC, then the de-activation timer maintenance mechanism based on CC configuration: 3⁄4 port shown in Figure 12, de-activation timer maintenance and implicit deactivation mechanism and Figure 11 The difference is:

T6: For retransmission on CC2, there is no need to restart de-activation timer2;

T8: For CC2, only need to judge the de-activation timer2 timeout to deactivate the DL SCC;

T9: It is only necessary to judge the de-activation timer3 timeout on CC3 to activate the DL SCC. In the third case, the de-activation timer is based on the UE configuration, the UE is configured with the DRX, and the DR-based understanding is performed. The de-activation timer is maintained based on the UE. The maintenance mode of the de-activation timer is as shown in FIG.

Step 1301: The UE receives the scheduling signaling of the DL initial transmission or retransmission for any one DL SCC, and needs to start/restart the de-activation timer of the UE.

In addition, optional: if the UE receives scheduling signaling for initial transmission or retransmission of the UL CC on any one DL SCC or the UE receives HARQ for initial transmission or retransmission of the UL CC on any one DL SCC After the feedback is NACK, the UE's de-activation timer can be started/restarted. It should be noted that the UE can start or restart the de-activation according to one or more of the above three methods of starting or restarting the de-activation timer. Timer„

Step 1302: When process data is suspended on the UL CC that can be scheduled by any one of the DL SCCs, restart the de-activation timer of the UE at a time when the uplink retransmission scheduling signaling may be sent.

It should be noted that this step is an optional step, and step 1303 can be directly executed without performing this step.

Step 1303, the de-activation timer expires, and the UE's drx-Inactivity timer and/or HARQ RTT timer/drx-Retransmission timer are not started or timed out, and the UE deactivates all DL SCCs. In addition, the last two processes in the method can also be processed as follows: When the de-activation timer expires and the UE's drx-Inactivity timer/HARQ RTT timer/drx-Retransmission timer is not started or times out, if any DL SCC can If no process hangs on the scheduled UL CC, the de-activation timer is restarted, otherwise the UE deactivates all DL SCCs. It should be noted that the UE may also determine whether the drx-inactivity timer of the user terminal is started or timed out. If the drx-inactivity timer of the user terminal is not started or times out, all DL SCCs are activated; the UE may also only judge the user terminal. Whether the HARQ RTT timer and the drx-Retransmission timer are started or timed out. If neither the HARQ RTT timer nor the drx-Retransmission timer is started or times out, all DL SCCs are deactivated.

For example, the UE is configured with three DL CCs, labeled CC1, CC2, and CC3, where CC1 is DL PCC, CC2 and CC3 are DL SCC, and UE-based de-activation timer maintenance mechanism: 3⁄4. As shown in Figure 14, the de-activation timer maintenance and implicit deactivation mechanisms include:

T1: The UE receives the scheduling signaling for the downlink of CC1 and the data transmission of the corresponding downlink process 1 on CC1. At this time, the UE should start the drx-Inactivity timer and the HARQ RTT timerll for the process 1 on CC1;

T2: Because the downlink data of process 1 on CC1 includes the carrier activation MAC CE that activates CC2 and CC3, CC1 and CC3 should be activated after the UE parses the data packet, because the drx-inactivity timer of the UE is in the startup state. Therefore, CC2 and CC3 should also be in an active state. At this time, the UE's implicit deactivation timer should be started to start the de-activation timer.

T3: The UE receives the scheduling for the initial transmission of the process 1 on the CC2. At this time, the UE should restart the drx-Inactivity timer and start the HARQ RTT timer 21 for the process 1 on the CC2. In addition, the implicit deactivation timer of the UE needs to be restarted. De-activation timer;

T4: The UE receives the scheduling for the initial transmission of the process 1 on the CC3. At this time, the UE should restart the drx-Inactivity time and start the HARQ RTT timer 31 for the process 1 on the CC3. In addition, the implicit deactivation timer of the UE needs to be restarted. De-activation Timer;

T5: The UE receives the scheduling signaling for the retransmission of the process 1 on the CC2 during the drx-Retransmission timer 21 of the process 1 of the CC2, and the UE should start the HARQ RTT timer 21 for the process on the CC2, in addition, Restarting the UE's implicit deactivation timer to start the de-activation timer;

T6: The initial transmission of process 1 on CC3 is successful before the UE's de-activation timer and HARQ RTT timer31 have not timed out;

T7: The process 1 of the UE on CC2 is successfully transmitted before the de-activation timer of the UE and the HARQ RTT timer 21 are not timed out;

T8: The de-activation timer of the UE expires at time T8 and the drx-inactivity timer of the UE at this time and the HARQ RTT timer and the drx-Retransmission timer of any process on any CC of the UE are in the unstarted state, ^ port If the UE does not have a pending uplink transmission on all UL CCs that can be scheduled by the SCC, then all SCCs configured for the UE, that is, CC2 and CC3, should be implicitly deactivated at this time.

In this case, the maintenance method of the de-activation timer can also be:

After the UE receives the scheduling signaling for the DL initial transmission of any one DL SCC, it starts/restarts or the UE's de-activation timer, 匕^ό, UE ^-ii, which is received on the UL DL SCC for UL After the scheduling signaling of the initial transmission of the CC, it is required to start/restart the de-activation timer of the UE; when the UE's de-activation timer expires, all DL SCCs of the UE are deactivated.

It should be noted that the maintenance mode requires that the de-activation timer has a long time length, and needs to ensure that the initial transmission and the weight of all the DL SCCs of the UE and all UL CCs that can be scheduled before the UE's de-activation timer expires. Pass can be completed.

For example, it is assumed that the UE is configured with three DL CCs, which are labeled CC1, CC2, and CC3, respectively, where CC1 is DL PCC, CC2 and CC3 are DL SCC, and the UE is configured based on the UE-configured de-activation timer maintenance mechanism. As shown, the maintenance of the de-activation timer and the implicit deactivation mechanism differ from Figure 14 in that:

T5: The UE receives the scheduling signaling for the retransmission of the process 1 on the CC2 during the drx-Retransmission timer 21 of the process 1 of the CC2, and the UE should start the pin at this time. For the HARQ RTT timer21 of the process on CC2, there is no need to restart the de-activation timer;

T8: At time T8, the UE's de-activation timer expires to deactivate all SCCs configured for the UE, namely CC2 and CC3.

In the third case, the maintenance mode of the de-activation timer can also be as shown in Figure 16, including:

Step 1601: When the drx-inactivity timer of the UE times out, start or restart the de-activation timer of the UE.

Step 1602: When the HARQ RTT timer of any DL SCC of the UE times out, start or restart the de-activation timer of the UE.

Step 1603: When the drx-Retransmission timer of any DL SCC of the UE times out, start or restart the de-activation timer of the UE.

It should be noted that there is no necessary order relationship between the steps 1602 and 1603, and the two methods for starting or restarting the de-activation timer for the DL SCC can be used independently or in combination.

Step 1604: When the de-activation timer expires and the drx-inactivity timer/HARQ RTT timer/drx-Retransmission timer of the UE is not started, and all the UL CCs that can be scheduled by all the DL SCCs of the UE have no process data suspension, the UE Deactivate all DL SCCs.

It should be noted that the UE may also determine whether the drx-inactivity timer of the user terminal is started or timed out. If the drx-inactivity timer of the user terminal is not started or times out, all the DL SCCs are deactivated; the UE may also only judge the user terminal. Whether the HARQ RTT timer and the drx-Retransmission timer are started or timed out. If neither the HARQ RTT timer nor the drx-Retransmission timer is started or times out, all DL SCCs are deactivated.

In this case, the maintenance mode of the de-activation timer can also be:

When the drx-Inactivity timer of the UE times out, the de-activation timer of the UE is started/restarted; when the de-activation timer expires, all DL SCCs of the UE are deactivated. It should be noted that, in this manner, the length of the de-activation timer can be 0, may also be other values, as long as it can be guaranteed that the initial transmission and retransmission on all DL SCCs of the UE and all UL CCs that it can schedule can be completed before the UE's de-activation timer expires. In the fourth case, the de-activation timer is based on the CC configuration, the UE is configured with DRX, based on the DRX understanding 2, and the de-activation timer is based on the CC maintenance. As shown in FIG. 17, the de-activation timer maintenance manner includes:

Step 1701: The UE receives scheduling signaling for DL initial transmission or retransmission for any one DL SCC, and starts/restarts the de-activation timer on the DL SCC and the DL SCC that schedules the DL SCC.

Step 1702: After receiving the initial signaling or retransmission scheduling signaling for a certain UL CC on the certain DL SCC, the UE needs to restart the de-activation timer corresponding to the DL SCC, and/or the UE is in a certain DL SCC. After receiving the initial transmission or retransmission HARQ feedback for a certain UL CC, the de-activation timer corresponding to the DL SCC is restarted after the NACK.

It should be noted that this step is an optional step, and step 1703 can be directly executed without performing this step.

Step 1703: When the de-activation timer of a certain DL SCC of the UE expires, but the process data is suspended on any one of the UL CCs that can be scheduled by the DL SCC, the de-activation timer corresponding to the DL SCC is restarted.

It should be noted that the UE may use the de-activation timer corresponding to the DL SCC in the step of restarting or restarting the de-activation timer corresponding to the DL SCC according to any one or more of the steps 1702. The method of restarting the de-activation timer corresponding to the DL SCC in this step may also be used separately.

It should be noted that this step is an optional step, and step 1704 can be directly executed without performing this step.

Step 1704: When the de-activation timer on a certain DL SCC times out, the drx-Inactivity timer/HARQ RTT timer/drx-Retransmission timer on the DL SCC is not started or times out, and the UE deactivates the DL SCC. It should be noted that, in this manner, any DL SCC is activated, and the UE needs to start a de-activation timer for the CC. There is no limit to the length of the de-activation timer in this way.

In addition, the last two processes in the method can also be processed as follows: When the de-activation timer on a DL SCC times out, the drx-Inactivity timer/HARQ RTT timer/drx-Retransmission timer on the DL SCC is not started or When the timeout expires and no process is suspended on any of the UL CCs that the DL SCC can schedule, the UE deactivates the DL SCC. It should be noted that the UE may also only determine whether the drx-Inactivity timer on the DL SCC is started or timed out. If the drx-Inactivity timer on the DL SCC is not started or times out, the DL SCC is deactivated; the UE may also only judge the DL SCC. Whether the HARQ RTT timer and the drx-Retransmission timer are started or timed out. If neither the HARQ RTT timer nor the drx-Retransmission timer is started or times out, the DL SCC is deactivated.

For example, the UE is configured with three DL CCs, labeled CC1, CC2, and CC3, where CC1 is DL PCC, CC2 and CC3 are DL SCC, then the de-activation timer maintenance mechanism based on CC configuration: 3⁄4 port Figure 18 As shown, the maintenance of the de-activation timer and the implicit deactivation mechanism include:

T1: The UE receives the scheduling signaling for CC1 downlink and the corresponding downlink process 1 data transmission on CC1. At this time, the UE should start drx-Inactivity timerl 1 and HARQ RTT timerl 1 for process 1 on CC1;

T2: Since the downlink data of process 1 on CC1 includes the carrier activation MAC CE that activates CC2 and CC3, CC2 and CC3 should be activated after the UE parses the data packet, because the UE should start for CC2 and CC2 respectively on CC2 and CC3. CC3's drx-Inactivity timer2 and drx-Inactivity timer3 and implicit deactivation timer de-activation timer2 and de-activation timer3;

T3: The UE receives the scheduling for the initial transmission of process 1 on CC2. At this time, the UE should restart drx-Inactivity timer2 on CC2 and start HARQ RTT timer21 for process 1 on CC2. At this time, it is also necessary to restart the deactivation timing corresponding to CC2. De-activation timer2; T4: The UE receives the scheduling for the initial transmission of the process 1 on the CC3. At this time, the UE should restart the drx-Inactivity time3 on the CC3 and start the HARQ RTT timer31 for the process 1 on the CC3. The UE should restart the deactivation timer corresponding to the CC3. - activation timer3;

T5: The initial transmission of process 1 on CC3 is successful before CC3 de-activation timer3 and HARQ RTT timer31 have not timed out;

T6: The UE de-activation timer expires on CC3 at time T6 and the drx-Inactivity timer and the HARQ RTT timer and the drx-Retransmission timer on CC3 are in an inactive state, if at this time, the UL CC that can be scheduled on CC3 is also If there is no pending uplink transmission, CC3 should be implicitly deactivated.

T7: The UE receives the scheduling signaling for the retransmission of the process 1 on the CC2 during the drx-Retransmission timer 21 of the process 1 of the CC2, and the UE should start the HARQ RTT timer 2 and the CC2 on the CC2 for the process. Implicitly deactivate the timer de-activation timer2;

T8: The UE successfully receives the process 1 on the CC3 before the de-activation timer 2 and the HARQ RTT timer 21 on the CC2 are not exceeded;

T9: The UE de-activation timer expires on CC2 at time T6 and the drx-Inactivity timer and the HARQ RTT timer and the drx-Retransmission timer on CC2 are in the inactive state, if at this time, the UL CC that can be scheduled by CC2 is also If there is no pending uplink transmission, CC2 should be implicitly deactivated.

In this case, the maintenance mode of the de-activation timer may be: the UE receives scheduling signaling for the initial transmission on the DL SCC or its schedulable DL SCC on a certain DL SCC, and then starts/restarts the De-activation timer on the DL SCC and its scheduled DL SCC; in addition, optionally, the UE needs to start/restart after receiving the scheduling signaling for the initial transmission of any one of the UL CCs on a certain DL SCC. De-activation timer of the UE; when the de-activation timer of the UE on a certain DL SCC times out, the DL SCC is deactivated. It should be noted that, in this manner, the de-activation timer is required to be long enough to ensure that the UE is in the DL SCC and all DL/UL CCs that it can schedule before the de-activation timer expires on the DL SCC. Both the initial transmission and the retransmission can be completed. In this way, it is also necessary to note that any DL SCC of the UE is activated and needs to start/restart the UE's de-activation timer on the DL SCC.

For example, it is assumed that the UE is configured with three DL CCs, which are labeled CC1, CC2, and CC3, respectively, where CC1 is DL PCC, and CC2 and CC3 are DL SCC, then the de-activation timer maintenance mechanism based on CC configuration: 3⁄4 port FIG. As shown, the maintenance of the de-activation timer and the implicit deactivation mechanism differ from Figure 18 in that:

T6: The UE receives the scheduling signaling for the retransmission of the process 1 on the CC2 during the drx-Retransmission timer 21 of the process 1 of the CC2, and the UE should start the HARQ RTT timer2 for the process on the CC2, without restarting the CC2. Implicit deactivation timer de-activation timer2;

T7: The UE successfully receives the process 1 on CC3 before de-activation timer 2 and HARQ RTT timer 21 on CC2 are not exceeded;

T8: At time T8, the UE's de-activation timer on CC2 times out and the drx-Inactivity timer on CC2 should implicitly deactivate CC2.

T9: At time T9, the UE's de-activation timer on CC3 times out and the drx-Inactivity timer on CC2 should implicitly deactivate CC3. In the fourth case, as shown in Figure 20, the maintenance mode of the de-activation timer may also include:

Step 2001: When the UE times out the drx-Inactivity timer on a certain DL SCC, the UE starts or restarts a de-activation timer for the DL SCC.

Step 2002, when the HARQ RTT timer of any one of the DL SCCs of the UE times out, the UE starts or restarts a de-activation timer for the DL SCC;

Step 2003: When the drx-Retransmission timer of any one of the DL SCCs of the UE expires, the UE starts or restarts a de-activation timer for the DL SCC.

It should be noted that there is no necessary order relationship between this step and step 2002, and the manners of starting or restarting the de-activation timer for the DL SCC may be used independently or in combination. Step 2004, when the de-activation timer of a certain DL SCC times out, the drx-Inactivity timer/HARQ RTT timer/drx-Retransmission timer for the DL SCC is not started, and none of the UL CCs that can be scheduled by the DL SCC are available. When the process data is suspended, the UE deactivates the DL SCC. It should be noted that the UE may also only determine whether the drx-Inactivity timer on the DL SCC is started or timed out. If the drx-Inactivity timer on the DL SCC is not started or times out, the DL SCC is deactivated; the UE may also only judge the DL SCC. Whether the HARQ RTT timer and the drx-Retransmission timer are started or timed out. If neither the HARQ RTT timer nor the drx-Retransmission timer is started or times out, the DL SCC is deactivated.

In this case, the de-activation timer can be maintained in the following manner: When the drx-inactivity timer of the UE on the DL SCC times out, the de-activation timer of the UE is started or restarted, and the de-activation timer on the DL SCC is used. After the timeout, the UE deactivates the DL SCC. In this case, the length of the de-activation timer may be 0, or may be other values, as long as the initial transmission of the UE on the DL SCC and all UL CCs that can be scheduled before the de-activation timer of the UE is guaranteed. Retransmission can be done. It should be noted that, in the method provided by the embodiment of the present invention, after receiving the explicit activation signaling, the user terminal stops the drx-in activity timer corresponding to the DL SCC, and specifically includes: if the user terminal maintains a de-activation timer based on the UE, Then, the drx-Inactivity timer corresponding to the UE is stopped; if the user terminal maintains the de-activation timer based on the CC, the drx-Inactivity timer on the DL SCC corresponding to the explicit activation signaling is stopped.

By using the method provided by the embodiment of the present invention, the carrier deactivation timer is maintained according to the data and control information transmission requirements of the downlink secondary carrier DL SCC, and the corresponding DL SCC is deactivated when the carrier deactivation timer expires, thereby providing Implicit deactivation mechanism in LTE-A systems. Based on the same technical concept as the foregoing method, the embodiment of the present invention provides a user terminal, as shown in FIG. 21, including: The maintenance unit 11 is configured to maintain a carrier deactivation timer according to the data and the transmission requirement of the control information on the downlink secondary carrier DL SCC;

The deactivation unit 12 is configured to deactivate the corresponding DL SCC if the carrier deactivation timer expires.

The carrier deactivation timer and its length are configured by RRC signaling, and the carrier deactivation timer and its length are based on DL SCC or user terminal configuration.

The carrier deactivation timer is maintained based on DL SCC or user terminal.

The maintenance unit 11 is further configured to:

Starting or restarting a carrier deactivation timer corresponding to the user terminal after receiving downlink signaling of downlink transmission or retransmission of any one of the DL SCCs configured by the user equipment; and/or

A carrier deactivation timer corresponding to the user terminal is started or restarted after receiving scheduling signaling for initial transmission or retransmission of the UL CC on any one of the DL SCCs configured for the user terminal; and/or

And starting or restarting a carrier deactivation timer corresponding to the user terminal after the HARQ feedback received for the initial transmission or retransmission of the UL CC is NACK on any one of the DL SCCs configured for the user terminal; and/or

At the time when the carrier deactivation timer expires, if any one of the DL SCC-regulated UL CCs has process data pending, the carrier deactivation timer corresponding to the user terminal is restarted.

The time length of the carrier deactivation timer may be set to be greater than the maximum time required between two consecutive transmissions of a process on the DL SCC and the UL CC.

The maintenance unit 11 can also be used to:

Starting or restarting a carrier deactivation timer corresponding to the user terminal after receiving scheduling signaling for downlink initial transmission of any one of the DL SCCs configured by the user terminal; and/or

A carrier deactivation timer corresponding to the user terminal is started or restarted after receiving scheduling signaling for initial transmission of the UL CC on any one of the DL SCCs configured for the user terminal. The maintenance unit 11 can also be used to:

When receiving the downlink initial transmission or retransmission scheduling signaling for any DL SCC configured by the user terminal, starting or restarting the carrier deactivation timing on the any DL SCC and the DL SCC scheduling the any DL SCC And/or

A carrier deactivation timer is initiated or restarted on any of the DL SCCs when scheduling signaling for UL CC initial transmission or retransmission is received on any of the DL SCCs configured for the user terminal; and/or

When the HARQ feedback received for the initial transmission or retransmission of the UL CC on the DL SCC configured for the user terminal is NACK, the carrier deactivation timer is started or restarted on any of the DL SCCs; and/or

At the time when the carrier deactivation timer corresponding to any of the DL SCCs times out, if there is process data suspension on the UL CC scheduled by any of the DL SCCs, restarting the carrier deactivation timing corresponding to any of the DL SCCs Device.

The maintenance unit 11 can also be used to:

When receiving scheduling signaling for downlink initial transmission of any DL SCC configured for the user terminal, starting or restarting a carrier deactivation timer on the any DL SCC and the DL SCC scheduling any one of the DL SCCs; / or

The carrier deactivation timer is initiated or restarted on any of the DL SCCs when scheduling signaling for the initial transmission of the UL CC is received on any of the DL SCCs configured for the user terminal.

The time length of the carrier deactivation timer is greater than the maximum time required for a process on the DL SCC and the UL CC to start the retransmission.

The maintenance unit 11 is further configured to: when the drx-inactivity timer of the user terminal times out, start or restart the carrier deactivation timer of the user terminal. The maintenance unit 11 may be further configured to: start or restart a carrier deactivation timer of the user terminal when a HARQ RTT timer of any DL SCC of the user terminal times out; and/or when the user terminal is The drx-Retransmission timer of a DL SCC times out, The carrier deactivation timer of the user terminal is activated or restarted.

The maintenance unit 11 may be further configured to: when the user terminal times out the drx-inactivity timer on any DL SCC, start or restart a carrier deactivation timer on any one of the DL SCCs. The maintenance unit 11 is further configured to: when the user terminal times out a HARQ RTT timer of any one of the DL SCCs, start or restart a carrier deactivation timer of any one of the DL SCCs; and/or when the user The terminal times out the drx-Retransmission timer of any one of the DL SCCs, and starts or restarts the carrier deactivation timer of any of the DL SCCs.

In the embodiment of the present invention, the determining unit 13 is further configured to determine whether the drx-Inactivity timer of the user terminal is started or timed out; and/or determine whether the HARQ RTT timer and the drx-Retransmission timer of the user terminal are started or timed out. The deactivation unit 12 is further configured to: when the determination result of the determining unit is not started or timed out, deactivate the DL SCC.

The determining unit 13 may be further configured to determine whether the drx-Inactivity timer on the DL SCC is started or timed out; and/or determining whether the HARQ RTT timer and the drx-Retransmission timer on the DL SCC are started or timed out; The activation unit 12 is further configured to: when the determination result of the determining unit is not started or timed out, deactivate the DL SCC.

In the embodiment of the present invention, when the carrier deactivation timer expires, the DL SCC of the UE is deactivated, or the carrier deactivation timer on the DL SCC expires, and any DL SCC is deactivated.

In the embodiment of the present invention, the method further includes:

The stopping unit 14 is configured to stop the carrier deactivation timer corresponding to the DL SCC when receiving the explicit deactivation signaling.

By using the user terminal provided by the embodiment of the present invention, the carrier deactivation timer is maintained according to the data and the transmission requirement of the control information on the downlink secondary carrier DL SCC, and the corresponding DL SCC is deactivated when the carrier deactivation timer expires, thereby providing LTE-A system Implicit deactivation mechanism in . Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way. Based on such an understanding, the form of the software product is embodied, the computer software product being stored in a storage medium, including a plurality of instructions for causing a terminal device (which may be a mobile phone, a personal computer, a server, or a network device) to execute the present The methods described in the various embodiments are invented.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. The scope of protection of the invention should be considered.

Claims

Rights request

A carrier deactivation method applied to a multi-carrier system, the method comprising:

If the carrier deactivation timer expires, the DL SCC is deactivated.

2. The method according to claim 1, wherein the carrier deactivation timer and its length are configured by RRC signaling, and the carrier deactivation timer and its length are based on a DL SCC or a user terminal configuration.

3. The method of claim 1, wherein the carrier deactivation timer is maintained based on a DL SCC or a user terminal.

The method according to claim 1, wherein the maintaining the carrier deactivation timer according to the data and control information transmission requirement on the downlink auxiliary carrier DL SCC comprises:

Initiating or restarting a carrier deactivation timer corresponding to the user terminal after receiving downlink initial transmission or retransmission scheduling signaling for any one of the DL SCCs configured by the user terminal; and/or

At the time when the carrier deactivation timer expires, if any one of the DL SCC scheduled UL CCs has process data pending, the carrier deactivation timer corresponding to the user terminal is restarted.

The method according to claim 1, wherein the maintaining the carrier deactivation timer according to the data on the downlink auxiliary carrier DL SCC and the control information transmission requirement comprises:

A carrier deactivation timer corresponding to the user terminal is started or restarted after receiving scheduling signaling for downlink initial transmission of any one of the DL SCCs configured by the user terminal; and/or

A carrier deactivation timer corresponding to the user terminal is started or restarted after receiving scheduling signaling for the initial transmission of the UL CC on any one of the DL SCCs configured for the user terminal.

When receiving the downlink initial transmission or retransmission scheduling signaling for any DL SCC configured by the user terminal, starting or restarting the carrier deactivation timing on the any DL SCC and the DL SCC scheduling any one of the DL SCCs And/or

The method according to claim 1, wherein the maintaining the carrier deactivation timer according to the data and control information transmission requirement on the downlink secondary carrier DL SCC comprises: When receiving scheduling signaling for downlink initial transmission of any DL SCC configured for the user terminal, starting or restarting a carrier deactivation timer on the any DL SCC and the DL SCC scheduling any one of the DL SCCs; /or

When the drx-Inactivity timer of the user terminal times out, the carrier deactivation timer of the user terminal is started or restarted.

9. The method of claim 8, further comprising:

When the HARQ RTT timer of any DL SCC of the user terminal times out, starting or restarting the carrier deactivation timer of the user terminal; and/or

When the drx-Retransmission timer of any DL SCC of the user terminal times out, the carrier deactivation timer of the user terminal is started or restarted.

When the user terminal times out the drx-Inactivity timer on any DL SCC, the carrier deactivation timer on any one of the DL SCCs is started or restarted.

The method according to claim 10, further comprising: starting or restarting carrier deactivation timing of any one of the DL SCCs when the user terminal times out the HARQ RTT timer of any one of the DL SCCs And/or

When the user terminal times out in the drx-Retransmission timer of any of the DL SCCs, the carrier deactivation timer of any of the DL SCCs is started or restarted.

12. The method according to claim 4, 5, 8 or 9, wherein before deactivating the DL SCC, the method further comprises:

Determining whether the drx-Inactivity timer of the user terminal is started or timed out; and/or

Determining whether the HARQ RTT timer and the drx-Retransmission timer of the user terminal are started or timed out;

If the drx-Inactivity timer, and/or the HARQ RTT timer and the drx-Retransmission timer of the user terminal are not started or timed out, the step of deactivating the DL SCC is performed.

13. The method of claim 6, 7, 10 or 11, wherein before deactivating the DL SCC, the method further comprises:

Determining whether the drx-Inactivity timer on the DL SCC is started or timed out; and/or

Determining whether the HARQ RTT timer and the drx-Retransmission timer on the DL SCC are started or timed out;

If the drx-Inactivity timer, and/or the HARQ RTT timer and the drx-Retransmission timer on the DL SCC are not started or timed out, the step of deactivating the DL SCC is performed.

The method according to claim 4 or 6, wherein the time length of the carrier deactivation timer is greater than the maximum time required between two consecutive transmissions of a process on the DL SCC and the UL CC .

The method according to claim 7 or 9, wherein the time length of the carrier deactivation timer is greater than the maximum time required for a process on the DL SCC and the UL CC to start the retransmission .

The method of claim 4, 5, 8, 9, or 12, wherein the carrier deactivation timer expires to deactivate all DL SCCs of the UE.

17. A method as claimed in claim 6, 7, 10, 11 or 13 wherein: If the carrier deactivation timer on any of the DL SCCs times out, then any one of the DL SCCs is deactivated.

If explicit deactivation signaling is received, the carrier deactivation timer corresponding to the DL SCC is stopped.

19. A user terminal, comprising:

The deactivation unit is configured to deactivate the corresponding DL SCC if the carrier deactivation timer expires.

The user terminal according to claim 19, wherein the carrier deactivation timer and its length are configured by RRC signaling, and the carrier deactivation timer and its length are configured based on a DL SCC or a user terminal.

The user terminal according to claim 19, wherein the carrier deactivation timer is maintained based on a DL SCC or a user terminal.

The user terminal according to claim 19, wherein the maintenance unit is further configured to:

The carrier deactivation timer corresponding to the user terminal is started or restarted after receiving the HARQ feedback for the initial transmission or retransmission of the UL CC on any one of the DL SCCs configured for the user terminal as a NACK; and/or At the time when the carrier deactivation timer expires, if any one of the DL SCC scheduled UL CCs has process data pending, the carrier deactivation timer corresponding to the user terminal is restarted.

When receiving scheduling signaling for downlink initial transmission of any DL SCC configured for the user terminal, in any of the DL SCCs and DL SCC scheduling any one of the DL SCCs Start or restart the carrier deactivation timer; and/or

The user terminal according to claim 26, wherein the maintenance unit is further configured to:

The user terminal according to claim 28, wherein the maintenance unit is further configured to:

When the user terminal times out the HARQ RTT timer of any one of the DL SCCs, starting or restarting the carrier deactivation timer of any one of the DL SCCs; and/or

When the user terminal times out the drx-Retransmission timer of any one of the DL SCCs, the carrier deactivation timer of any one of the DL SCCs is started or restarted.

The user terminal according to claim 22, 23, 26 or 27, further comprising: a determining unit, configured to determine whether the drx-Inactivity timer of the user terminal is started or timed out; and/or determine the Whether the HARQ RTT timer and the drx-Retransmission timer of the user terminal are started or timed out;

The deactivation unit is further configured to: the determination result of the determining unit is not activated or When timed out, the DL SCC is deactivated.

The user terminal according to claim 24, 25, 28 or 29, further comprising: a determining unit, configured to determine whether a drx-Inactivity timer on the DL SCC is started or timed out; and/or Whether the HARQ RTT timer and the drx-Retransmission timer on the DL SCC are started or timed out;

The deactivation unit is further configured to: when the determining result of the determining unit is not started or timed out, deactivate the DL SCC.

The user terminal according to claim 22 or 24, wherein a length of time of the carrier deactivation timer is greater than a maximum length between two consecutive transmissions of a process on the DL SCC and the UL CC time.

The user terminal according to claim 25 or 27, wherein the time length of the carrier deactivation timer is greater than the length of time required for a process on the DL SCC and the UL CC to start the retransmission time.

34. The user terminal according to claim 22, 23, 26, 27 or 30, wherein the carrier deactivation timer expires to deactivate all DL SCCs of the UE.

35. The user terminal according to claim 24, 25, 28, 29 or 31, wherein the carrier deactivation timer on any one of the DL SCCs times out, and then deactivates any one of the DL SCCs.

The user terminal according to claim 19, further comprising: a stopping unit, configured to stop a carrier deactivation timer corresponding to the DL SCC when receiving explicit deactivation signaling.