WO2011069368A1 - Optimizing method and evolved node b for discontinuous reception on multiple carriers - Google Patents

Abstract

An optimizing method and an evolved Node B(eNB) for Discontinuous Reception(DRX) on multiple carriers are provided. The optimizing method for discontinuous reception on multiple carriers involves: as an eNB sets the configuration parameters of discontinuous reception for the component carriers distributed to a user equipment, selecting an equivalent DRX cycle, setting the actual DRX cycle of each component carrier of the user equipment as the number of the component carriers of the user equipment multiplied by the equivalent DRX cycle, differentiating the DRX start offset of each component carrier one by one in the step of an equivalent DRX cycle, and notifying the user equipment of the DRX configuration parameters; and according to the actual DRX cycle and the DRX start offset, through selecting component carriers in active time to send Physical Downlink Control Channel(PDCCH) signaling, scheduling the component carriers in active time or inactive time by the eNB. In the solution, discontinuous reception on multiple carriers can be implemented.

Description

 Optimization method and discontinuous base station for discontinuous reception on multiple carriers

Technical field

 The present invention relates to a discontinuous reception (DRX) technology in the field of communications, and in particular to an optimization method and an evolved base station for discontinuous reception on multiple carriers.

Background technique

 The Third Generation Mobile Communications Partnership (3GPP) Long Term Evolution (LTE) technology uses key technologies to increase transmission rates over the air interface, such as Orthogonal Frequency Division Multiplexing (OFDM), Multiple Input Multiple Output (MIMO), For high-order modulation, etc., the goal is to achieve an uplink 50 Mbit/s and a downlink 100 Mbit/s rate requirement. In order to further improve the transmission rate and other performance, 3GPP determines Advanced Long Term Evolution (LTE-A) as a subsequent enhanced version of LTE, using multi-carrier aggregation, relay nodes, coordinated multi-point reception/transmission technologies, etc., with the goal of achieving uplink 500 Mbit/s, downlink lGbit/s rate requirement. Among them, carrier aggregation is the most important means to increase the transmission rate requirements. The so-called carrier aggregation means that the user equipment (UE) can receive/transmit data on multiple component carriers at the same time. Different number of component carriers with different bandwidths can be configured in the downlink/uplink, and each component carrier corresponds to one hybrid automatic request. A HARQ (Media Access Control Layer (MAC) entity, all HARQ MAC entities are controlled by a Scheduling/Priority MAC entity. There is a separate Physical Downlink Control Channel (PDCCH) on the component carrier indicating resource allocation on the present component carrier or other component carriers. The network can distribute traffic data across component carriers for transmission to increase the transmission rate. FIG. 1 is a schematic structural diagram of carrier aggregation. After the service data is passed through a packet data convergence protocol (PDCP) entity 11 and a radio link control (RNC) entity 12, the MAC entity 13 is scheduled/prioritized. Assigned to the corresponding HARQ MAC entity 14, the HARQ MAC entity 14 processes and submits to the corresponding component carrier, wherein the PDCP entity 11 encrypts, compresses/intlinests the service data, and the RLC entity 12 processes the data processed by the PDCP entity 11 according to the data. Wireless resources are segmented.

The DRX technology is a technology used by the UE to save power. The basic principle is: The UE does not continuously monitor the PDCCH channel and reduces the power loss of related components. DRX has been standardized in LTE Release (R) 8, and its configuration mechanism is as follows: The UE is in Radio Resource Control Idle (RRC IDLE) In the state, the DRX parameter configuration of the UE is given by the system information, that is, the DRX parameter of the UE in the idle (IDLE) state is a common configuration; in the RRC Connected state, the DRX parameter configuration of the UE is configured by dedicated control signaling. Given, ie, after the UE successfully accesses the network, the network configures UE-specific DRX parameters. The DRX parameters include: DRX cycle (DRX cycle). The DRX cycle includes a long DRX-Cycle, a short DRX-Cycle, a DRX Start Offset, and some timers:

 On Duration Timer: Specifies the number of consecutive PDCCH subframes to be monitored at the beginning of the DRX cycle.

 DRX-Inactivity Timer: The number of consecutive PDCCH subframes that the UE monitors after the PDCCH indicating the initial transmission of the downlink/uplink user data, that is, the UE is extended after receiving the initial transmission indicated by the PDCCH. Activity time (Active Time).

 MAC-Contention Resolution Timer: During random access, the UE monitors the number of consecutive PDCCH subframes after the message (MSG) 3 is transmitted.

 DRX-Retransmission Timer: The UE has started to expect the number of consecutive PDCCH subframes when it expects downlink retransmission.

The DRX parameter configuration finally divides the time of the UE into: monitoring the active time of the PDCCH (Active Time) and the inactive time (Inactive Time) of not monitoring the PDCCH. The active time includes: a duration of the listening duration timer, a DRX inactivity timer and a DRX retransmission timer, a time of waiting for an uplink grant (UL grant) after the UE sends a scheduling request (SR), and a UE The MAC-contention resolution timer running time after the MSG 3 is retransmitted/transmitted, the time when the UE waits for the PDCCH after receiving the MSG 2 (non-contention access), the time when the UE waits for the UL grant to be allocated, and the like. The DRX mechanism of the LTE R8 is also closely related to other processes located in the MAC layer. For the uplink, after the UE completes the random access, the UE sends an SR request scheduling to the network, the UE is in an active time state, and the network sends a first-pass UL grant to the UE. After receiving the UE, the UE starts the DRX inactivity timer to listen to the subsequent possible PDCCH, performs uplink transmission after processing delay (UL transmission), and then receives acknowledgement/non-acknowledgement in a specified subframe after processing delay (ACK/ NACK), and listen to the UL grant. If the NACK is received but there is no UL grant, the non-adaptive retransmission will be performed at the next transmission time of the process. For the downlink, the UE receives the downlink grant (DL assignment) and starts. HARQ round-trip time timer (RTT timer), if the HARQ round-trip time timer expires, If the decoding is not completed, the DRX retransmission timer will be started to monitor the PDCCH to complete the retransmission. In addition, when the component carrier DRX MAC command control unit (DRX MAC Command CE) is received, the UE changes the current short/long period type while canceling the active state of the current DRX cycle.

 In summary, although the above mechanisms are equally applicable on component carriers from the perspective of a single component carrier, since the component carriers on the LTE-A independently configure the PDCCH channel for uplink grant or downlink grant, and the PDCCH may include one The carrier identifier is used to allocate resources of the component carrier and other component carriers. Therefore, LTE-A needs to introduce some new DRX mechanisms to facilitate optimization from the overall perspective and improve UE performance. The current scheme is to divide the component carrier into an anchor carrier and a non-anchor carrier, and the anchor carrier has a complete DRX configuration. As a main method for monitoring the PDCCH, the non-anchor carrier does not actively monitor the PDCCH, when the anchor carrier is notified, The PDCCH is monitored again. However, since the non-anchor carrier does not have a fixed DRX cycle, periodic channel quality indicator (CQI) / precoding matrix indication (PMI) / rank indication (RI) and sounding reference signal (SRS) cannot be transmitted most of the time. And other information, which brings difficulties to resource scheduling based on channel quality.

Summary of the invention

 The technical problem to be solved by the present invention is to propose an optimization method for discontinuous reception on multiple carriers and an evolved base station, which can realize discontinuous reception of multiple carriers.

 In order to solve the above technical problem, the present invention provides an optimization method for discontinuous reception on a multi-carrier, which is applied to the network side, and includes:

 When the evolved base station eNB sets the discontinuous reception DRX configuration parameter for the component carrier allocated to the user equipment, selects an equivalent DRX period, and sets the actual DRX period of each component carrier of the user equipment to be the user equipment component carrier. Multiplying the number by the equivalent DRX period, the DRX start offset of each component carrier is sequentially different by an equivalent DRX period, and the DRX configuration parameter is informed to the user equipment;

And the eNB sends the physical downlink control channel PDCCH signaling by selecting a component carrier that is in active time according to the actual DRX cycle and the DRX start offset, and scheduling the component carrier that is in active time or inactive time. The above method can also have the following characteristics:

 The step of the eNB selecting an equivalent DRX cycle includes:

 The eNB searches for the service that the user equipment has the smallest DRX cycle, and uses the minimum DRX cycle as the equivalent DRX cycle.

 The above method can also have the following characteristics:

 In the step of the eNB transmitting PDCCH signaling by selecting a component carrier that is in active time,

 The eNB informs the user equipment of the component carrier that transmits the service data by using the PDCCH signaling, and then sends or receives the service data on the component carrier of the transport service data.

 In order to solve the above technical problem, the present invention provides an optimization method for discontinuous reception on a multi-carrier, which is applied to the user side, and includes:

 Receiving, by the user equipment, the discontinuous reception DRX configuration parameter sent by the evolved base station eNB, and monitoring the physical downlink control channel PDCCH signaling sent on the component carrier of the active time according to the actual DRX period and the DRX start offset in the DRX configuration parameter; as well as

 After receiving the PDCCH signaling, the user equipment learns a component carrier that transmits service data according to the PDCCH signaling, and further receives or transmits service data on a component carrier of the transmission service data.

 In order to solve the above technical problem, the present invention provides an optimization method for discontinuous reception on multiple carriers, including:

 When the eNB sets the DRX configuration parameter for the component carrier allocated to the user equipment, select an equivalent

The DRX cycle, and setting the actual DRX period of each component carrier of the user equipment is the number of the user equipment component carriers multiplied by the equivalent DRX period, and the DRX starting offset of each component carrier is sequentially different by an equivalent And the DRX configuration parameter is used to notify the user equipment of the DRX configuration parameter; and, according to the actual DRX period and the DRX start offset, the eNB sends PDCCH signaling by selecting a component carrier that is in active time, and scheduling the Component carrier of active time or inactive time;

The user equipment monitors PDCCH signaling sent on a component carrier that is active at the active DRX period and the DRX start offset according to the received DRX configuration parameter. The above method can also have the following characteristics:

 The step of the eNB selecting an equivalent DRX cycle includes:

 The eNB searches for the service that the user equipment has the smallest DRX cycle, and uses the minimum DRX cycle as the equivalent DRX cycle.

 The above method can also have the following characteristics:

 The eNB sends the PDCCH signaling on the component carrier that is in the active time, and informs the user equipment to transmit the component carrier of the service data, and then sends or receives the service data on the component carrier of the transmission service data;

 After receiving the PDCCH signaling, the user equipment learns a component carrier that transmits service data according to the PDCCH signaling, and further receives or transmits service data on a component carrier of the transmission service data.

 In order to solve the above technical problem, the present invention provides an optimization system for discontinuous reception on multiple carriers, including an eNB and a user equipment.

 The eNB is configured to: when setting a DRX configuration parameter for a component carrier allocated to the user equipment, select an equivalent DRX period, and set an actual DRX period of each component carrier of the user equipment to be the user equipment component carrier. Multiplying the number by the equivalent DRX period, the DRX start offset of each component carrier is sequentially different by an equivalent DRX period, and the DRX configuration parameter is notified to the user equipment; and, according to the actual DRX period and DRX Starting offset, scheduling PDCCH signaling by selecting a component carrier that is active, scheduling the component carrier that is in active time or inactive time;

 The user equipment is configured to send PDCCH signaling on a component carrier that is active at the active DRX period and the DRX start offset in the received DRX configuration parameter.

 The above system can also have the following characteristics:

 The eNB is configured to: find that the user equipment has a minimum DRX period, and use the minimum DRX period as an equivalent DRX period.

 The above system can also have the following characteristics:

The eNB is configured to notify the user equipment to transmit a component carrier of service data by transmitting PDCCH signaling on a component carrier that is in active time, and further, in the transmission service data. Transmitting or receiving service data on a component carrier;

 The user equipment is further configured to: after receiving the PDCCH signaling, obtain a component carrier for transmitting service data according to the PDCCH signaling, and further receive or send service data on a component carrier of the transmission service data.

 In order to solve the above technical problem, the present invention further provides an evolved base station eNB, where the eNB is configured to select an equivalent DRX cycle when setting a discontinuous reception DRX configuration parameter for a component carrier allocated to the user equipment, and set the The actual DRX period of each component carrier of the user equipment is the number of the user equipment component carriers multiplied by the equivalent DRX period, and the DRX starting offset of each component carrier is sequentially different by an equivalent DRX period, and The DRX configuration parameter is sent to the user equipment; and, according to the actual DRX period and the DRX start offset, the physical downlink control channel PDCCH signaling is sent by selecting a component carrier that is in active time, and the active time or non-schedule is scheduled. The component carrier of the active time.

 The evolved base station can have the following features:

 The eNB is configured to: find that the user equipment has a minimum DRX period, and use the minimum DRX period as an equivalent DRX period.

 The evolved base station can also have the following features:

 The eNB is configured to notify the user equipment to transmit a component carrier of the service data by transmitting the PDCCH signal on the component carrier that is in active time, and then send or receive the service data on the component carrier of the transmission service data. In order to solve the above technical problem, the present invention further provides a user equipment, where the user equipment is configured to receive a discontinuous reception DRX configuration parameter sent by an evolved base station eNB, according to an actual DRX cycle and a DRX in the DRX configuration parameter. Determining the physical downlink control channel PDCCH signaling that is sent on the component carrier that is in the active time; after receiving the PDCCH signaling, the user equipment learns the component carrier of the transmission service data according to the PDCCH signaling, and further Receiving or transmitting service data on the component carrier transmitting the service data.

 The beneficial effects of the present invention are as follows:

1. Since each component carrier has a continuous monitoring time (onDuration) time, the user equipment can periodically measure the PDCCH and report CQI/PMI/RI and SRS information, thereby improving the tuning of the base station. Ability

 2. The DRX cycle of the carrier is increased, and the power saving capability is improved. BRIEF abstract

 1 is a schematic structural diagram of carrier aggregation;

 2 is a flowchart of an optimization method for discontinuous reception on the network side according to an embodiment of the present invention; FIG. 3 is a flowchart of an optimization method for discontinuous reception on a user side according to an embodiment of the present invention; FIG. 4a is an actual DRX of an application example of the present invention; Cycle diagram

 Figure 4b is a schematic diagram of an equivalent DRX cycle of an application example of the present invention.

Preferred embodiment of the invention

 In the present invention, each component carrier has an independent DRX cycle, and the DRX operations on the component carriers are independent of each other; the actual DRX cycle of each component carrier is optimally configured to extend the DRX cycle of each component carrier, thereby saving power of the user equipment. .

 Specifically, when an Evolved Node B (eNB) sets a DRX configuration parameter for a component carrier allocated to a user equipment, an equivalent DRX cycle is selected, and an actual DRX cycle of each component carrier of the user equipment is set as Multiplying the number of user equipment component carriers by an equivalent DRX cycle, and the DRX start offset of each component carrier is sequentially different by an equivalent DRX cycle, and the DRX configuration parameter is notified to the user equipment; and the eNB And according to the actual DRX cycle and the DRX start offset, sending PDCCH signaling by selecting a component carrier that is in active time, scheduling the component carrier that is active time, or scheduling other component carriers;

 The user equipment sends PDCCH signaling on the component carrier that is active at the active DRX period and the DRX start offset in the received DRX configuration parameter.

 The eNB searches for the service with the minimum DRX period of the user equipment, and uses the minimum DRX period as the equivalent DRX period.

Transmitting, by the eNB, PDCCH signaling on a component carrier that is in active time, informing the user equipment to transmit a component carrier of the service data, and further, in the component carrier of the transmission service data Send or receive business data;

 After the PDCCH signaling received by the user equipment, the component carrier that transmits the service data is learned according to the PDCCH signaling, and then the service data is received or transmitted on the component carrier of the transmission service data.

 The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

 In this embodiment, the DRX configuration between the component carriers is independent, and the component carrier receiving the PDCCH signaling may be any component carrier in the group that is active at the active time, and the component carrier in the inactive time may be in other components. The component carrier of the active time sends PDCCH signaling to the user equipment to perform downlink or uplink service data transmission.

 As shown in Figure 2, the process flow on the network side includes the following steps:

 Step 100: The eNB obtains a DRX cycle of each service running on the user equipment.

 Specifically, the eNB may learn the service type according to the service request initiated by the user equipment, and further obtain the DRX cycle of the service;

 Step 110: The eNB allocates a component carrier to the user equipment.

 Specifically, the eNB may allocate a component carrier according to factors such as a network load, a capability of the user equipment, and a service requirement, and the allocation process is a prior art, and is not detailed herein;

 Step 120: The eNB sets DRX configuration parameters for each component carrier of the user equipment.

 The DRX configuration parameters include the actual DRX period and the DRX start offset, and may include other parameters. Since other parameters are not involved in the present invention, the relevant standards of LTE R8 may be used, so the details are not described herein. In addition, the DRX cycle includes Long period and short period, the actual DRX period in the present invention refers to a long period in the DRX cycle;

 A set of component carriers bears transmission of several services, and the eNB searches for a service with a minimum DRX cycle, and takes the minimum DRX cycle as an equivalent DRX cycle, and all component carriers calculate each component carrier according to the number of component carriers and the equivalent DRX cycle. The period, for example, the equivalent DRX period is X, the number of component carriers is N, then the DRX period of each component carrier is x*N, and the DRX starting offset of each component carrier is 0, X, 2x, 3x, (Nl )x;

Step 130: The eNB sends the DRX configuration parameter to the user equipment by using RRC control signaling. Step 140: The eNB sends PDCCH signaling to the user equipment according to the DRX configuration parameter of the user equipment, that is, the eNB selects a component carrier that is in active time to send PDCCH signaling.

 The eNB sends the PDCCH signaling on the component carrier that is in the active time, and informs the user equipment to transmit the component carrier of the service data, and then sends or receives the service data on the component carrier of the transmission service data;

 Specifically, the component carrier that transmits the service data is indicated by the carrier identifier in the PDCCH signaling. The component carrier of the transmission service data may be the component carrier at the active time or the component carrier at the inactive time.

 As shown in Figure 3, the processing flow on the user side includes the following steps:

 Step 200: The user equipment obtains the DRX configuration parameter allocated by the network side by using RRC control signaling.

 Step 210: The user equipment performs related configuration according to the received DRX configuration parameter. The DRX configuration parameter may include a DRX inactivity timer and a MAC-contention in addition to the actual DRX cycle and the DRX start offset mentioned in the present invention. To solve the configuration parameters such as timers, the user equipment needs to set various timers. Because the present invention only involves the actual DRX cycle and the DRX start offset, other parameters can follow the relevant standards of LTE R8, so it will not be detailed here. In addition, the user equipment may also select a DRX configuration mode (using an anchor carrier and a non-anchor carrier) according to the needs of the user equipment. In this embodiment, the user equipment uses the DRX configuration parameters configured by the eNB to configure. ;

 Step 220: The user equipment monitors PDCCH signaling sent on the component carrier that is active at the active time according to the actual DRX period and the DRX start offset in the DRX configuration parameter.

 Step 230: After receiving the PDCCH signaling, the user equipment learns a component carrier that transmits service data according to the PDCCH signal, and then receives or transmits service data on a component carrier of the transmission service data.

Specifically, the user equipment learns, according to the indication of the carrier identifier in the PDCCH signaling, which component carrier is a component carrier for transmitting service data, and the component carrier of the transmission service data may be the component carrier of the active time, or may be a component carrier that is inactive time, such that the user equipment can receive or transmit component carriers from inactive time, or can receive from the component carrier or send data.

 That is: each component carrier has an equivalent DRX cycle, and an actual DRX cycle, the user equipment can listen to other PDCCHs on the component carrier of the active time on each of the equivalent DRX cycles, and receive other inactive time. The component carrier needs to send PDCCH signaling, and then perform corresponding operations of receiving or transmitting service data on the component carrier indicated by the PDCCH signaling.

 Whether the UE receives the PDCCH signaling for scheduling the component carrier directly from the component carrier at the active time, or receives the PDCCH signaling for scheduling the component carrier indirectly through other component carriers, the UE is in accordance with the DRX specification of the current R8. (ie, the scheduled component carrier) operates: for example, if it is a new transmission, the DRX-Inactivity Timer of the component carrier is activated to cause the component carrier to enter/extend the active time.

 That is, when the UE indirectly receives a PDCCH signal for scheduling an inactive time component carrier, the component carrier is also operated according to the current DRX specification of R8.

 An example is shown in Figure 4a, which is the actual DRX cycle configured. The service data (Data) in the component carrier CC1 is activated by the PDCCH at the first continuous listening time (Onduration) in the component carrier CC2. The service data of the component carrier CC2 is activated by the PDCCH of the component carrier CC1 located at the first continuous listening time (Onduration), and the service data of the component carrier CC3 is determined by the PDCCH of the component carrier CC2 located at the second continuous listening time (Onduration). activation. Figure 4b shows the equivalent DRX period, and the component carriers CC1 CC3 have the same equivalent period.

 An optimization system for discontinuous reception on multiple carriers in an embodiment of the present invention, including an eNB and a user equipment,

 The eNB is configured to: when setting a DRX configuration parameter for a component carrier allocated to the user equipment, select an equivalent DRX period, and set an actual DRX period of each component carrier of the user equipment to be the user equipment component carrier. Multiplying the number by the equivalent DRX period, the DRX start offset of each component carrier is sequentially different by an equivalent DRX period, and the DRX configuration parameter is notified to the user equipment; and, according to the actual DRX period and DRX Starting offset, transmitting PDCCH signaling by selecting a component carrier that is active, scheduling the component carrier at active time, or scheduling other component carriers;

The user equipment is configured to: according to an actual DRX cycle in the received DRX configuration parameter And the DRX start offset monitors PDCCH signaling transmitted on the component carrier that is active.

 Preferably, the eNB is configured to: find that the user equipment has a minimum DRX period, and use the minimum DRX period as an equivalent DRX period.

 Preferably, the eNB is configured to notify the user equipment to transmit a component carrier of the service data by transmitting PDCCH signaling on the component carrier that is in active time, and then send or receive on the component carrier of the transmission service data. The user equipment is further configured to: after receiving the PDCCH signaling, obtain a component carrier that transmits the service data according to the PDCCH signaling, and further receive or send the service data on the component carrier of the transmission service data. .

 The present invention also discloses an evolved base station eNB, where the eNB is configured to select an equivalent DRX cycle for setting a discontinuous reception DRX configuration parameter for a component carrier allocated to the user equipment, and set each component carrier of the user equipment. The actual DRX cycle is the number of the above-mentioned user equipment component carriers multiplied by the equivalent DRX cycle, and the DRX start offset of each component carrier is sequentially different by an equivalent DRX cycle, and the above DRX configuration parameters are notified to the user equipment; And transmitting, according to the actual DRX cycle and the DRX start offset, the physical downlink control channel PDCCH signaling by selecting the component carrier that is in active time, and scheduling the component carrier that is in active time or inactive time.

 Preferably, the eNB is configured to find that the user equipment has a minimum DRX cycle, and use the minimum DRX cycle as an equivalent DRX cycle.

 Preferably, the foregoing eNB is configured to notify the user equipment to transmit a component carrier of the service data by transmitting PDCCH signaling on the component carrier that is in active time, and then send or receive the service data on the component carrier of the transmission service data.

The eNB in this embodiment has the same function as the eNB in the foregoing system embodiment, and details are not described herein. The invention also discloses a user equipment, the user equipment is configured to receive the discontinuous reception DRX configuration parameter sent by the evolved base station eNB, and monitor the active time according to the actual DRX period and the DRX start offset in the DRX configuration parameter. The physical downlink control channel PDCCH signaling sent on the component carrier; after receiving the PDCCH signaling, the user equipment learns the component carrier of the transmission service data according to the PDCCH signaling, and further receives or transmits on the component carrier of the transmission service data. Send business data. The user equipment in this embodiment is used in the above system embodiment. The functions of the user equipment are the same and will not be described here.

 One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program that instructs the associated hardware to be stored in a computer readable storage medium, such as a read only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

 It is a matter of course that the invention may be embodied in various other forms and modifications without departing from the spirit and scope of the invention.

Industrial Applicability The present invention provides an optimization method for discontinuous reception on a multi-carrier and an evolved base station. Since each component carrier has a continuous listening time, the user equipment can periodically measure the PDCCH and report CQI/PMI/RI and SRS information. The scheduling capability of the base station is improved; at the same time, the DRX cycle of the carrier is increased, and the power saving capability is improved.

Claims

Claim  An optimization method for discontinuous reception on a multi-carrier, which is applied to a network side, includes: an evolved base station eNB selects an equivalent DRX cycle when a discontinuous reception DRX configuration parameter is set for a component carrier allocated to a user equipment, and Setting an actual DRX period of each component carrier of the user equipment is the number of the user equipment component carriers multiplied by an equivalent DRX period, and a DRX starting offset of each component carrier is sequentially different by an equivalent DRX period, and Notifying the user equipment of the DRX configuration parameter;  And the eNB sends the physical downlink control channel PDCCH signaling by selecting the component carrier that is in active time according to the actual DRX period and the DRX starting offset, and scheduling the component carrier that is in active time or inactive time.  2. The method of claim 1 wherein  The step of the eNB selecting an equivalent DRX cycle includes:  The eNB searches for the service that the user equipment has the smallest DRX cycle, and uses the minimum DRX cycle as the equivalent DRX cycle.  3. The method of claim 1, wherein  In the step of the eNB transmitting PDCCH signaling by selecting a component carrier that is in active time,  The eNB informs the user equipment of the component carrier that transmits the service data by using the PDCCH signaling, and then sends or receives the service data on the component carrier of the transport service data.  An optimization method for discontinuous reception on a multi-carrier, which is applied to the user side, includes: the user equipment receives the discontinuous reception DRX configuration parameter sent by the evolved base station eNB, according to the actual DRX period and the DRX in the DRX configuration parameter. The initial offset listens to physical downlink control channel PDCCH signaling sent on the component carrier that is active; and  After receiving the PDCCH signaling, the user equipment learns a component carrier that transmits service data according to the PDCCH signaling, and further receives or transmits service data on a component carrier of the transmission service data. An evolved base station eNB, where the eNB is configured to be a component that is allocated to the user equipment When the wave setting discontinuously receives the DRX configuration parameter, selecting an equivalent DRX cycle, and setting the actual DRX cycle of each component carrier of the user equipment to the number of the user equipment component carriers multiplied by the equivalent DRX cycle, The DRX start offsets of the component carriers are sequentially different by an equivalent DRX cycle, and the DRX configuration parameters are informed to the user equipment; and, according to the actual DRX cycle and the DRX start offset, by selecting the active time The component carrier transmits a physical downlink control channel PDCCH signaling, and schedules the component carrier that is in active time or inactive time.  The evolved base station according to claim 5, wherein the eNB is configured to search for a service with the minimum DRX period of the user equipment, and use the minimum DRX period as an equivalent DRX period.  7. The evolved base station according to claim 5, wherein the eNB is configured to notify the user equipment to transmit a component carrier of service data by transmitting PDCCH signaling on a component carrier that is in active time, and further, in the transmitting The service data is transmitted or received on a component carrier of the service data.  A user equipment, the user equipment is configured to receive a discontinuous reception DRX configuration parameter sent by an evolved base station eNB, and monitor an active time component according to an actual DRX cycle and a DRX start offset in the DRX configuration parameter. Physical downlink control channel PDCCH signaling sent on the carrier; after receiving the PDCCH signaling, the user equipment learns a component carrier for transmitting service data according to the PDCCH signaling, and further, a component carrier of the transmission service data Receive or send business data.