CN103228032A - Method and device for interrupted reception of connected terminal in mobile communication system - Google Patents

Abstract

A method and apparatus for performing a Discontinuous Reception (DRX) operation of a connected User Equipment (UE) in a mobile communication system are provided. For a packet service, adjusting an active period length according to the requirements of traffic at a reception time provides a DRX operation. Also, the UE enters into a sleep mode after confirming successful reception of packets including retransmission packets and sending an RLC ACK signal for the packets.

Description

The method and apparatus of the discontinuous reception period active period of control in the mobile communication system

The application be that March 28, application number in 2007 are 200780010787.8 the applying date, denomination of invention divides an application for the application for a patent for invention of " method and apparatus of discontinuous reception that is used for the connecting terminal of mobile communication system ".

Technical field

The present invention relates generally to discontinuous reception (DRX) operation in the mobile communication system.More specifically, the present invention relates to a kind of being used for uses variable active period (active period) to carry out DRX method of operating and equipment at connecting terminal (connected terminal).

Background technology

Because communicator does not have to the access that is fixed with spider lines, so designed wireless communication system largely.Such wireless communication system comprises mobile communication system, wireless lan (wlan), WiMAX (WiBro) and moves special-purpose (ad hoc) system.

Particularly, compare with other wireless communication systems, mobile communication system is based on user mobility.They finally make every effort to provide communication service to the portable terminal such as portable phone and radio pager under the situation regardless of time and position.

Mobile communication system is operated synchronously or asynchronously.Particularly, universal mobile telecommunications service (umts) be based on European mobile communication system, global system for mobile communications (GSM) and general packet radio service (GPRS), with the third generation (3G) asynchronous mobile communiation system of Wideband Code Division Multiple Access (WCDMA) (WCDMA) operation.Be devoted to the standardized third generation partner program of UMTS (3GPP) the UMTS of future generation system that is called as Long Term Evolution (LTE) is being discussed.

LTE seeks business-like the left and right sides in 2010, as to be used for 100Mbps or higher high speed packet communication technology.In order to accomplish this point, studying many schemes, for example be used for by simplify network configuration reduce the node that exists on the communication path number method or be used for as far as possible closely method to the approximate wireless protocols of radio channel.At last, the LTE system will change into 2 nodes or 3 node frameworks from 4 existing node frameworks.

Fig. 1 illustrates the configuration of application LTE of the present invention system.

With reference to figure 1, the LTE system can be reduced to has the 2 node frameworks of enode b (ENB) 100a to 100e and evolution gateway GPRS service node (EGGSN) 102a and 102b.

Be connected with subscriber equipment (UE) 104 by radio channel to 100e with the ENB100a of existing Node B equivalence.Compare with traditional Node B, ENB100a provides complicated more function to 100e.

This has hinted that on shared channel service comprises such as the whole subscriber traffics based on the real-time service of the Internet protocol transport voice (VoIP), and therefore needs to be used to collect the state information of particular UE 104 and other UE and the device that they are dispatched in the LTE system.ENB100a is responsible for described scheduling to 100e.

In order to reach the data rate to 100Mbps, expectation LTE system uses the wireless access technology that is called as OFDM (OFDM) with the 20-MHz bandwidth.Will be according to the channel status of UE104, to its application self-adapting modulation and coding (AMC).That is to say, come to select modulation scheme and channel encoding rate adaptively for UE104 according to channel status.

The up-link (E-DCH) that inserts (HSDPA) with high-speed down link or strengthen is the same, and the LTE system will be at UE104 and ENB100a to using mixed automatic repeat request (HARQ) between the 100e.HARQ is used for by not deleting under the initial transmission data conditions by initial transmission data and data retransmission are carried out soft combination to increase the scheme that receives success rate.Therefore, UE104 is intended to guarantee the receptivity of dividing into groups by AMC and HARQ scheme.

Traditionally, UE revives (wake up) at the fixed time, monitoring preset channel in the predetermined time cycle, and under idle state, enter park mode then once more.This is called as discontinuous reception operation (DRX), and it is the mode that is used to prolong the stand-by period of idle state UE.

Fig. 2 illustrates the sequential of the DRX operation in traditional mobile communication system.

With reference to figure 2, UE and Node B are reached an agreement to DRX configuration, rest period with according to the alternately active period of this DRX configuration.Rest period is that UE closes its receiver so the time cycle of minimise power consumption during it.Active period be during it UE under the situation that its receiver is opened, carry out the normal time cycle that receives operation.Therefore active period is also referred to as waking, and here with identical implication, use term " active period " and " waking " interchangeably.

The DRX configuration typically is made up of following element.

1.DRX Cycle Length 210 or 220: the interval between active period and next active period.By DRX cycle length, increase the power consumption of park mode and minimizing UE.Yet the paging that the DRX cycle length that is increased can increase among the UE postpones.Network signaling DRX cycle length.

2. the original position 205,215 or 225 of active period: the original position of obtaining active period from identifier (ID) and the DRX cycle length of UE.For example, by UE ID and DRX cycle length are carried out the original position that active period is calculated in modular arithmetic.

3. active period length 235: UE kept the timer cycle of reviving during it in an active period.Typically, default active period length.For example, the active period length in the UMTS communication system is 10msec.

UE uses UE ID and DRX cycle length 210 or 220 to calculate the original position 230 of active period, and at receiving downlink channel from the active period of these original position 230 calculating.When not having desired information on downlink channel, UE closes its receiver and enters rest period.

For the connection UE in the new LTE system, Fig. 2 is illustrated, with every predetermined time interval revive and predetermined time cycle in the DRX operation of classics that downlink channel is monitored infeasible.

When UE is connected, this means that for UE special services is underway and between network and UE, have user data with this service association.The network that can carry out Radio Link control (RRL) is that UE keeps service context.UE under this state is called as and connects UE.

Correspondingly, compare, have the needs of the DRX operation of the connection UE in a kind of LTE of the being used to specify system with the traditional DRX operation of idle state UE.

Summary of the invention

The aspect of example embodiment of the present invention is to overcome the above problems at least and/or shortcoming, and advantage described below is provided at least.Correspondingly, the aspect of example embodiment of the present invention is to provide a kind of execution its DRX method of operating and equipment that is used for the UE of mobile communication system.

The grouped data amount DRX cycle among a kind of UE that is used for considering next generation mobile communication system that provides on the other hand of example embodiment of the present invention is set to variable method and apparatus.

The another aspect of example embodiment of the present invention provides a kind of method and apparatus that is used for adjusting according to the COS of mobile communication system the active period length of UE.

The aspect of example embodiment according to the present invention provides the execution DRX method of operating of a kind of UE of the connection that is used for mobile communication system.In described DRX method, UE receives the information of relevant DRX cycle length, the retrieving information of original position that is used to obtain active period and the information of relevant minimum active period length from Node B, use the information of being retrieved to obtain the original position of active period, and activate first timer that is set to DRX cycle length and the second timer that is set to minimum active period length in the original position of active period.UE monitors the existence of downlink packets during minimum active period length.When not having downlink packets during minimum active period, UE is converted to park mode.When having downlink packets, UE receives described downlink packets, determines whether to exist the indication information that is used to indicate the end that grouping receives, and when having described indication information, end of packet receives, and is converted to park mode.When first timer expired, UE was converted to active mode from park mode.

Example embodiment provides a kind of DRX method of operating that is used for carrying out on the other hand in the UE of the connection of mobile communication system according to the present invention.In described DRX method, UE from Node B receive DRX cycle length, the retrieving information, minimum active period length and the active period that are used to obtain the original position of active period finish at interval, use the information of being retrieved to obtain the original position of active period, and activate first timer that is set to DRX cycle length and the second timer that is set to minimum active period length in the original position of active period.UE monitors the existence of downlink packets during minimum active period length.When not having downlink packets during minimum active period length, UE is converted to park mode.When having downlink packets, UE receives described downlink packets according to the automatic repetitive requests of predetermined mix (HARQ) scheme, activation is set to active period and finishes the 3rd timer at interval, wherein receives when newly dividing into groups when user equipment (UE), starts or restarts the 3rd timer.When the 3rd timer expiration, UE is converted to park mode.When first timer expired, UE was converted to active mode from park mode.

The another aspect of example embodiment according to the present invention, a kind of DRX apparatus operating that is used for carrying out in the connection UE of mobile communication system is provided, wherein the DRX controller uses from the information of the relevant DRX cycle length of Node B reception, be used to obtain the retrieving information of the original position of active period, obtain the original position of active period with the information of relevant minimum active period length, original position in active period activates first timer that is set to DRX cycle length and the second timer that is set to minimum active period length, during minimum active period length, monitor the existence of downlink packets, shutter transceiver when during minimum active period length, not having downlink packets, and when having downlink packets, open transceiver, reception is used to indicate the indication information of the end that grouping receives, and according to described indication information control transceiver; Demultiplexer (DEMUX) determines whether grouping has described indication information, and to the described indication information of described DRX controller reporting; And described transceiver, be used under the control of described DRX controller, opening or closing.

Particularly, the another aspect of example embodiment according to the present invention, the method of the active period of control discontinuous reception (DRX) operating period is provided in a kind of subscriber equipment (UE) that is used in mobile communication system, and this method comprises: monitor control data via shared control channel during active period; In case during active period, receive the control data of the transmission of the new user data of indication, just prolong the duration of active period via shared control channel; And the control signal that in a single day receives the end of indication active period from Node B, just stop active period.

The another aspect of example embodiment according to the present invention, the device of the active period of control discontinuous reception (DRX) operating period is provided in a kind of subscriber equipment (UE) that is used in mobile communication system, this device comprises: the DRX controller, be configured to during active period, monitor control data via shared control channel, in case during active period, receive the control data of the transmission of the new user data of indication via shared control channel, just prolong the duration of active period, and the control signal that in a single day receives the end of indication active period from Node B, just stop active period.

The another aspect of example embodiment according to the present invention, provide and be used in a kind of mobile communication system sending the method for configuration information with the active period of controlling discontinuous reception (DRX) operating period subscriber equipment (UE) in Node B, this method comprises: send configuration information to UE, configuration information comprises the information of relevant DRX cycle length, the information of the information of the beginning of relevant active period and relevant minimum active period length, wherein UE monitors control data via shared control channel during active period, in case during active period, receive the control data of the transmission of the new user data of indication via shared control channel, just prolong the duration of active period, and the control signal that in a single day receives the end of indication active period from Node B, just stop active period.

The another aspect of example embodiment according to the present invention, provide and be used in a kind of mobile communication system sending the device of configuration information with the active period of controlling discontinuous reception (DRX) operating period subscriber equipment (UE) in Node B, this device comprises: transmitter, be configured to send configuration information to UE, configuration information comprises the information of relevant DRX cycle length, the information of the information of the beginning of relevant active period and relevant minimum active period length, wherein UE monitors control data via shared control channel during active period, in case during active period, receive the control data of the transmission of the new user data of indication via shared control channel, just prolong the duration of active period, and the control signal that in a single day receives the end of indication active period from Node B, just stop active period.

Description of drawings

By next in conjunction with the accompanying drawings detailed description, the above and other purpose of particular exemplary embodiment of the present invention, feature and advantage will be more obvious, wherein:

Fig. 1 illustrates the configuration of application LTE of the present invention system;

Fig. 2 illustrates the sequential of the DRX operation in traditional mobile communication system;

Fig. 3 illustrates the DRX operation that has variable active period length according to of the present invention;

Fig. 4 is the flow chart according to operation under the situation of (in-band) signaling, UE in the band that active period finishes of the present invention;

Fig. 5 is the flow chart according to operation under the situation of (out-band) signaling, UE outside the band that active period finishes of the present invention;

Fig. 6 is according to the flow chart of considering the operation of down link activity (activity), UE when MS determines that active period finishes of the present invention;

Fig. 7 is the block diagram according to UE receiver of the present invention;

Fig. 8 illustrates consideration RLC according to the present invention and really receives the sequential of the DRX operation of (ACK) signal;

Fig. 9 is the flow chart according to the DRX operation of considering the RLC ack signal among the UE of the present invention; And

Figure 10 is the block diagram according to UE receiver of the present invention.

Run through in the accompanying drawing, identical referenced drawings mark will be understood to mean components identical, feature and structure.

Embodiment

For helping complete understanding of the present invention, provide the item that defines in the specification such as detailed construction and element.Correspondingly, those of ordinary skill in the art will recognize, can make the various changes and the modification of embodiment described here, and not depart from the scope of the present invention and spirit.Equally, for clarity and conciseness, omitted the description of known function and structure.

Although in the context of LTE system, described example embodiment of the present invention, be appreciated that they can be applied to other mobile communication system of using DRX under the situation of not making amendment.

The DRX operation of connection UE in the example embodiment definition next generation mobile communication system of the present invention.Preferably but not necessarily, consider that service characteristic disposes the DRX that connects UE.Can be depending on COS, coming with every DRX cycle (DRX_cycle) serves as to connect UE to generate different data volumes.In other words, in each DRX cycle, need to change the duration of UE monitor downlink channel according to the data volume that during DRX cycle, will send.

For example, when UE uses transmission control protocol (TCP) when receiving file download service, characteristic in view of TCP, on down link, at first send a grouping, in response to sending two groupings, and send four groupings in response to TCP ACK then from described two groupings of UE from the TCP ACK of UE.The TCP file download service is characterised in that down link data increases with the specified time interval between transmitting.Consider this trend, preferably increase the length of the active period of the UE in the service gradually.

Except file download service, unpredictability and noncontinuity during data generate also are the characteristics of packet service.Therefore, packet service may generate state in the face of different traffic carrying capacitys in each DRX cycle.Correspondingly, example embodiment of the present invention is intended to be provided for being provided with the method for the DRX cycle that changes according to the grouped data amount among the UE.

With reference to figure 3, Node B signaling DRX cycle length 310, be used to obtain information (below, be called original position and obtain information) and the minimum active period length 340a or the 340b of the original position 305 of active period 350.

UE revives at each original position 305,320 and 325 places of active period 350,360 and 370.When not having the data that will receive, UE is held minimum active period length and enters park mode.When having the data that will receive, UE keeps active period up to receiving this data fully, and enters park mode then.

UE calculates the original position 305 of active period 350 with preordering method (for example, carrying out modular arithmetic by ID and DRX cycle length to UE).When active period when the times 305, the place began, activate UE.

The scope of active period 350,360 and 370 length from minimum length 340a or 340b to DRX cycle length 310 or 380.At original position 305 places of active period 350, UE receives grouping on downlink channel.Reference numeral 340a and 340b represent same minimum active period length.

About active period 360, in minimum active period length 340a, receive grouping successively.UE can be by determining with predetermined method whether each grouping that is received is that last stops active period 360.

Can depend on that communication system realizes the branch group of received with predetermined method.For example, in the LTE system, UE monitors that downlink control channel is to determine whether to exist the grouping that will receive and when having the grouping that will receive, it receives this grouping.

About active period 370, UE the times 325 place revive, do not have the grouping that will receive during the concurrent now predetermined minimum active period length 340b.Therefore, UE stops active period 370 and is transformed into park mode arriving up to next active period.

On the other hand, when UE the times 320 place revive and when determining grouping that existence will receive before 360 expirations of minimum active period length, it begins to receive grouping from Node B.

By in-band information that comprises in the grouping or the end position that comes signaling active period 350,360 and 370 by control channel.Perhaps, UE can come independently to determine the end position of active period 350,360 and 370 according to predetermined rule.

1. notify under the situation that active period finishes by in-band information therein, it is (YES) that Node B in the grouping in the end is set to the last grouping sign (Last Packet Flag) of 1 bit during active period.In case receive grouping with the last grouping sign that is set to YES, UE keep active period up to detect as UE grouping when being last in the HARQ processor stored packet handled fully, and when this was finished dealing with, UE entered park mode.

2. when notifying active period to finish by control channel, UE keeps active period up to receiving the grouping through being subject to processing in the HARQ processor when stating the termination of active period, and when this finished receiving, UE was converted to park mode.

3. if do not receive grouping in the predetermined time cycle, think that then active period stops, UE can be converted to park mode.

As mentioned above, when not having any grouping that will receive, active period is kept minimum active period length.When having any grouping that will receive, come the signaling active period to finish by out of band signal in the control channel or in-band information, perhaps UE determines that independently active period finishes.Like this, when needs, active period is adjusted into length variable, therefore guarantees effective DRX operation.

Embodiment 1

With reference to figure 4, when indicating that by last grouping when notifying active period to finish, UE operates in the following manner.

In step 405, UE receives information, the original position of relevant DRX cycle length and obtains information and minimum active period length during call setup.Then, UE prepares to carry out the DRX operation.

In step 410, UE obtains the original position of active period from original position retrieving information (for example, the ID of UE and DRX cycle length), and whether the original position of definite active period arrives.

If active period does not begin as yet, then in step 435, UE remained on the original position of rest period up to active period.UE knows the original position DRX cycle length place afterwards of active period formerly, and active period begins.

When active period began, UE is Active Timer T (DRX_CYCLE_LENGTH (DRX cycle length)) and timer T (MINIMUM_ACTIVE (minimum active)) in step 415.Timer T (DRX_CYCLE_LENGTH) is the timer that is set to DRX cycle length T (DRX_CYCLE_LENGTH), and timer T (MINIMUM_ACTIVE) is the timer that is set to minimum active period length T (MINIMUM_ACTIVE).

In step 420, UE monitors shared control channel, to determine whether to exist the grouping that will receive.If do not have the grouping that will receive up to timer T (MINIMUM_ACTIVE) expiration, then in step 435, place park mode to begin UE up to next active period.When timer T (DRX_CYCLE_LENGTH) expired, next active period began.

On the contrary, if in step 420 before timer T (MINIMUM_ACTIVE) expiration, have any grouping that will receive, then operation receives this grouping to UE according to HARQ in step 425.If successfully receive grouping, then UE checks the last grouping sign of the grouping that receives in step 430.

If last grouping sign is set to YES, then UE forwards step 440 to.If last grouping sign is set to not (NO), then UE turns back to step 425, to continue to divide group of received.

In step 440, when UE found that the grouping that is received is last, it finished the processing of the HARQ grouping of storing in the HARQ processor.Then, UE enters park mode and begins up to next active period.When timer T (DRX_CYCLE_LENGTH) expired, next active period began.

The finishing dealing with of HARQ grouping mean by the HARQ operation normally receive in the HARQ processor stored packet, and therefore for this grouping sends HARQ ACK, perhaps no matter the mistake in the grouping, in identical HARQ handles, receive new grouping, and the reception of therefore in HARQ operates, dividing into groups fail at last.

That is to say,, think and handle this grouping fully when successfully receiving in the HARQ processor stored packet or UE when determining successfully to receive this grouping.

Embodiment 2

With reference to figure 5, except UE determines the mode of termination of active period, UE with first example embodiment of the present invention in same way as operate.Therefore, the step different with the illustrated step of Fig. 4 made following description.That is to say, owing to the step 505 of Fig. 5 is carried out in the mode identical with the step 405 to 420 of Fig. 4 to step 520, so will not describe them.

In step 525, UE receives grouping according to predetermined HARQ agreement from Node B.

Because UE continues the receiving downlink control channel, so it monitors the reception that is used to indicate the signal that active period finishes on downlink control channel in step 530.

In case receive this signal, UE advances to step 540, and otherwise, UE turns back to step 525 to continue the branch group of received.

UE finishes the processing that receives the HARQ grouping that exists at the HARQ processor when being used for indicating the signal that active period finishes when it in step 540, and enters park mode begin up to next active period in step 535.When the timer T (DRX_CYCLE_LENGTH) that activates in step 515 expired, next active period began.

Embodiment 3

With reference to figure 6, in step 605, UE receives information, the original position of relevant DRX cycle length and obtains information, minimum active period length and active period end at interval during call setup.Then, UE prepares to carry out the DRX operation.Minimum active period length can be identical at interval with the end of active period.In the case, only can signaling both one of.Then, UE prepares to carry out the DRX operation.

In step 610, UE obtains the original position of active period from original position retrieving information (for example, the ID of UE and DRX cycle length), and whether the original position of definite active period arrives.

If active period does not begin as yet, then in step 635, UE remained on the original position of rest period up to active period.Obtain the original position of active period from the original position retrieving information, and the DRX cycle length place after the original position of active period formerly, next active period begins.

When active period began, UE is Active Timer T (DRX_CYCLE_LENGTH) and another timer T (MINIMUM_ACTIVE) in step 615.Timer T (DRX_CYCLE_LENGTH) is the timer that is set to DRX cycle length T (DRX_CYCLE_LENGTH), and timer T (MINIMUM_ACTIVE) is the timer that is set to minimum active period length T (MINIMUM_ACTIVE).

In step 620, UE monitors shared control channel, to determine whether to exist the grouping that will receive.If just have the grouping that will receive up to timer T (MINIMUM_ACTIVE) expiration, then in step 635, place park mode to begin UE up to next active period.When timer T (DRX_CYCLE_LENGTH) expired, next active period began.

On the contrary, if in step 620 before timer T (MINIMUM_ACTIVE) expiration, have any grouping that will receive, then UE receives this grouping according to the HARQ agreement in step 625.

In step 627, UE starts (or restarting) and is set to the timer T (active_period_end) that active period finishes interval T (active_period_end).Timer T (active_period_end) is used to stop active period, unless receive grouping in time T (active_period_end).In case receive initial packet, UE starts timer T (active_period_end), and when UE receives ensuing grouping, restarts this timer.

This ensuing grouping can be that newly divide into groups (1) or newly divide into groups or retransmission packet (2).

That is to say, only when this ensuing grouping be new grouping maybe when this ensuing grouping be newly to divide into groups or during retransmission packet, UE can be restarted timer T (active_period_end).For convenience's sake, situation before is called as method 1 and afterwards situation is called as method 2.

In step 630, UE determines whether timer T (active_period_end) expires, and that is to say, whether does not receive grouping as yet during time T (active_period_end).If timer T (active_period_end) expires, then UE forwards step 640 to.If timer T (active_period_end) is still at operation, then UE repeating step 625 and 627.

In step 640, UE depends on that method 1 or method 2 operate in a different manner.

In method 1, in case overtime, UE finishes the processing of the HARQ grouping of storing in the HARQ processor in step 640, and enters park mode then and begin up to next active period.When timer T (DRX_CYCLE_LENGTH) expired, next active period began.

In method 2, because the end that active period is set relatively with the reception of any downlink packets at interval, and no matter new grouping or retransmission packet, so UE enters park mode need not to wait under the situation of finishing dealing with of HARQ grouping.If Node B does not retransmit specific cluster within the end at interval of active period, then UE switches to park mode.Therefore, Node B and UE should finish the retransmission version that interim sent and received this grouping in active period.

In other words, if retransmission packet does not arrive UE within the end of active period at interval, then this has hinted that Node B abandoned the re-transmission of this grouping, and therefore can not successfully receive this grouping for UE.Therefore, that UE deletes is that its retransmission version is not received as yet, in the HARQ processor stored packet, and enter park mode immediately.

With reference to figure 7, UE receiver 700 comprises: demultiplexer (DEMUX) 705, HARQ processor 715, control channel processor 720, DRX controller 725 and receiver 730.

Under the control of DRX controller 725, open or close receiver 730.DRX controller 725 cuts out receiver in park mode, and opens it in active period.HARQ processor 715 comes the HARQ grouping that receives from receiver 730 is handled according to predetermined HARQ operation, and provides errorless HARQ grouping to DEMUX705.

DEMUX705 checks the last grouping sign of the HARQ grouping that is received.If last grouping sign is set to YES, then DEMUX705 to 725 reports of DRX controller it, and also provide the grouping that is received to more high-rise.

In case realize the reception of the grouping with the last grouping sign that is set to YES, DRX controller 725 monitors the state of HARQ processor 715.When the finishing dealing with of HARQ processor 715, DRX controller 725 enters park mode, that is to say, closes receiver 730.

720 pairs of information that receive on downlink shared control channel of control channel processor are handled.If the same with the present invention's second example embodiment of describing with reference to figure 5, come the end of signaling active period by downlink shared control channel, then control channel processor 720 is to the end of DRX controller 725 report active period.

Then, DRX controller 725 monitors the state of HARQ processor 715.When the finishing dealing with of HARQ processor 715, DRX controller 725 enters park mode, that is to say, closes receiver 730.

When the same UE receiver with the present invention's first example embodiment 700 received last grouping, preferably but not necessarily, it entered park mode afterwards sending RLC rank ack signal (being called for short the RLC ack signal), rather than enters park mode immediately.

This is because in packet service, and in order to improve the reliability of transmission/reception, the RLC that UE is different from the automatic repetitive requests (ARQ) of HARQ with use really receives pattern (RLC AM) and operates.

In ARQ operation, transmitter is inserted into sequence number in the grouping before transmission, and receiver number determines whether to exist the grouping of any failure by checking sequence.For failed packet, receiver is not really received the re-transmission that (NACK) signal is asked failed packet by sending to transmitter.For the grouping that success receives, receiver sends ack signal to transmitter.Loading ACK signal and NACK signal in the control messages that is called as the RLC status report.

If the service that needs DRX is provided in RLC AM, in a single day then receive last grouping, UE must send the RCL ack signal of last grouping.Therefore, UE preferably enters park mode after sending the RLC ack signal, rather than enters park mode immediately.

Like this, compare with first example embodiment of the present invention, in case will to be used for receiving the grouping that level is associated with last packet indicator, the method that enters park mode after the RLC ack signal that sends last grouping is made description.

UE operates in the mode identical with the present invention's first example embodiment in the active period that will not receive grouping, and does not therefore provide UE will not receive the description of operating in the active period of grouping here.

With reference to figure 8, Node B signaling DRX cycle length 810, be used to obtain information and the minimum active period length 840a or the 840b of the original position 805 of active period 850.

UE revives at each original position 805,820 and 825 places of active period 850,860 and 870.When not having the data that will receive, UE is held minimum active period length and enters park mode.When having the data that will receive, UE keeps active period up to receiving this data fully, and enters park mode then.

UE calculates the original position 805 of active period 850 according to preordering method (for example, carrying out modular arithmetic by ID and DRX cycle length to UE).When active period begins at time point 305 places, activate UE.

The change changeably in from minimum length 840a or 840b to the scope of DRX cycle length 810 or 880 of active period 850,860 and 870 length.At original position 805 places of active period 850, UE receives grouping on downlink channel.Reference numeral 840a represents physically identical minimum active period length with 840b.

About active period 860, in minimum active period length 840a, receive grouping successively.UE can be by determining whether each grouping that is received is that last stops active period 860.

For example, UE revives in the original position of active period, and monitors downlink control channel.That is to say, before minimum active period length 840a finishes, send downlink control channel and downlink packets to UE.The grouping of UE receiving downlink is up to receiving a grade grouping 880 that is associated with last packet indicator.Last packet indicator can adopt the form of RLC control signal.

In the present invention first and the 4th example embodiment, UE differently operates in having the active period that will receive grouping, and is as described below.

In first example embodiment of the present invention, when UE receives level when being associated with the grouping of the last grouping sign that is set to YES fully, it stops active period, and is transformed into park mode.

In the 4th example embodiment of the present invention, be associated with the grouping of last packet indicator and finish when comparing the successful reception of whole groupings when UE receives level with less sequence number with the sequence number of last grouping, it sends described ack signal with grouping of less sequence number, finish active period, and enter park mode then.

Suppose to represent the sequence number that divides into groups to x+n that the RLC entity 945 of using configuration among the UE each determines whether not receive as yet any RLC PDU by the sequence number of checking the RLC Packet Data Unit (PDU) that is received by x.In case receive the grouping with last packet indicator, UE sends the RLS status report 885 of the receiving status information with relevant RLC PDU on uplink channel.

If received whole RLC PDU (RLC PDU[x] to RLC PDU[x+n]), the ack signal of the described RLC PDU of RLC status report 885 carryings then.After sending RLS status report 885, UE stops active period.

On the other hand, if do not receive RLC PDU[x as yet] to RLC PDU[x+n] among RLCPDU[x+m], then UE comprises the NACK signal of the RLC PDU of failure in RLC status report 885.Then, UE keeps active period up to the RLC PDU that retransmits failure from Node B fully.

With reference to figure 9, in step 905, UE receives information, the original position of relevant DRX cycle length and obtains information and minimum active period length during call setup.Then, UE prepares to carry out the DRX operation.

In step 910, UE obtains the original position that information (for example, the ID of UE and DRX cycle length) is obtained active period from original position, and whether the original position of definite active period arrives.

If active period does not begin as yet, then in step 935, UE remained on the original position of rest period up to active period.DRX cycle length place after the original position of active period, next active period begins.

When active period began, UE is Active Timer T (DRX_CYCLE_LENGTH) and another timer T (MINIMUM_ACTIVE) in step 915.Timer T (DRX_CYCLE_LENGTH) is the timer that is set to DRX cycle length T (DRX_CYCLE_LENGTH), and timer T (MINIMUM_ACTIVE) is the timer that is set to minimum active period length T (MINIMUM_ACTIVE).

In step 920, UE monitors shared control channel, to determine whether to exist the grouping that will receive.If just have the grouping that will receive up to timer T (MINIMUM_ACTIVE) expiration, then in step 935, place park mode to begin UE up to next active period.When timer T (DRX_CYCLE_LENGTH) expired, next active period began.

On the contrary, if in step 920 before timer T (MINIMUM_ACTIVE) expiration, have any grouping that will receive, then operation receives this grouping to UE according to HARQ in step 925.

If successfully receive this grouping, then UE determines by for example checking in the control information of this grouping cascade whether the grouping that is received is last in step 1030.When sending last RLC PDU, the RLC transmitter comprises the control information that is used to indicate last RLC PDU in RLC PDU.Therefore, whether UE is identified for indicating the control information of last RLC PDU to exist in step 1030 in the RLC PDU that is received.

If the grouping that is received is not last, then UE continues grouping and receives in step 925, up to receiving the grouping with the control information that is used to indicate last grouping.

If the grouping that is received is last, then UE is configured to present the RLC status report of the accepting state of the RCL PDU that receives at present in step 940.The RLC status report comprises the RLC sequence number of failed packet and the RLC sequence number of the grouping that receives.Stated that as above the RLC sequence number of failed packet is called as NACK, and the RLC sequence number of the grouping that receives is called as ACK.Therefore, the RLC status report comprises NACK and ACK.NACK is the set of serial numbers of failed packet, and ACK is the set of serial numbers of the grouping that receives.

When not having any NACK in the RLC status report, UE checks in step 945 whether the RLC status report comprises the ACK of last RLC PDU and the ACK that compares whole other RLC PDU with less sequence number with the sequence number of last RLC PDU.If check result is YES, then UE forwards step 950 to.If check result is NO, there is the grouping that needs re-transmission in its hint, and then UE forwards step 955 to.

UE sends the RLC status report in step 950, and enters park mode begin up to next active period in step 935.When timer T (DRX_CYCLE_LENGTH) expired, next active period began.

In step 955, UE sends the RLC status report, and waits for up to the re-transmission of the RLC grouping that needs to retransmit in the RLC status report and finishing.Then, UE sends and comprises the RLC status report of comparing the ACK of the whole RLC PDU with less sequence number with the sequence number of last RLC PDU.UE enters park mode in step 935, begin up to next active period.

With reference to Figure 10, the UE receiver can have to be respectively uses a plurality of RLC entities 1035,1040 and 1045 that dispose.Some that can dispose in them are operated with the DRX pattern.For example, RLC entity 1045 is operated with the DRX pattern.

When ensuing condition all satisfied, RLC entity 1045 request DRX controllers 1025 stopped active period.

Condition 1: receive the RLC PDU that level is associated with last packet indicator.

Condition 2: the whole groupings that successfully receive during active period to be received.

Condition 3: the RLC status report that sends the ACK of the whole groupings have during active period to be received fully.

Similarly, RLC entity 1045 determines whether to exist the grouping of any failure by the sequence number of checking RLC PDU, and constructs the RLC status report according to definite result.

Be used to the signal of indicating active period to finish in case receive from the RLC entity 1045 with DRX pattern operation, DRX controller 1025 stops active period, and keeps park mode and begin up to next active period.

Demultiplexer/multiplexer (DEMUX/MUX) 1005 will be from rlc layer (promptly, RLC entity 1035,1040 and 1045) the RLC PDU of Jie Shouing is multiplexed as MAC PDU, or before transmitting, the MAC PDU that receives from HARQ processor 1015 separated be multiplexed as RLC PDU to RLC entity 1035,1040 and 1045.

HARQ processor 1015 is handled the HARQ grouping that receives from transceiver 1030 according to predetermined HARQ operation, and provides errorless HARQ grouping to DEMUX MUX1005.The DEMUX of DEMUX/MUX1005 provides the HARQ that is received grouping to rlc layer 1035,1040 and 1045.

Similarly, HARQ processor 1015 provides the MAC PDU that receives from the DEMUX of DEMUX/MUX1005 according to the HARQ operation to transceiver, and transceiver 1030 sends this MAC PDU to Node B.

1020 pairs of information that receive from downlink shared control channel of control channel processor are handled.If the grouping that UE is gone in this information indication exists, then control channel processor 1020 exists to the grouping that 1025 reports of DRX controller will receive.

DRX controller 1025 is found the original position of active period and is opened receiver in this original position.If also do not receive the report that is used to indicate the grouping existence that will receive from control channel processor 1020 up to minimum active period length expiration, DRX controller 1025, then its stops active period.

On the other hand, in case receive the report that is used to indicate the grouping that will receive to exist, DRX controller 1025 is kept active period, receives the signal of the end that is used to indicate active period from RLC entity 1045 up to it.

As from the above description and significantly, the present invention comes to have increased the UE stand-by period for connecting UE definition DRX operation by considering the service characteristic in the next generation mobile communication system.Therefore, minimized the power consumption of UE.

Generate the variable packet service of state for every DRX cycle wherein, traffic carrying capacity, adjust active period length according to the demand of the traffic carrying capacity at time of reception place DRX is provided operation.

Similarly, UE enters park mode after comprising the grouping of retransmission packet and sending the RLCACK signal of described grouping confirming successfully to receive.Therefore, increased the receptivity of grouping.

Although illustrate and described the present invention with reference to particular exemplary embodiment of the present invention, but it should be appreciated by those skilled in the art that, can carry out the various changes on form and the details therein, and not break away from the further the spirit and scope of the present invention that limit of equivalent institute by claims and they.

Claims (24)

1. the method for the active period of control discontinuous reception (DRX) operating period in the subscriber equipment (UE) that is used in mobile communication system, this method comprises:

During active period, monitor control data via shared control channel;

In case during active period, receive the control data of the transmission of the new user data of indication, just prolong the duration of active period via shared control channel; And

In case receive the control signal of end of indication active period from Node B, just stop active period.

2. the method for claim 1 also comprises based on the information of the beginning of relevant active period and determines whether the current time is the beginning of active period.

3. method as claimed in claim 2 wherein receives the information of the beginning of relevant active period from Node B.

4. method as claimed in claim 3, wherein the information of the beginning of relevant active period comprises the information of relevant DRX cycle length.

5. the method for claim 1, wherein active period comprises the running time of first timer.

6. method as claimed in claim 5 wherein receives the information of the running time of relevant first timer from Node B.

7. the method for claim 1, wherein shared control channel comprises physical downlink control channel (PDCCH).

8. the device of the active period of control discontinuous reception (DRX) operating period in the subscriber equipment (UE) that is used in mobile communication system, this device comprises:

The DRX controller, be configured to during active period, monitor control data via shared control channel, in case during active period, receive the control data of the transmission of the new user data of indication via shared control channel, just prolong the duration of active period, and the control signal that in a single day receives the end of indication active period from Node B, just stop active period.

9. device as claimed in claim 8, wherein the DRX controller determines based on the information of the beginning of relevant active period whether the current time is the beginning of active period.

10. device as claimed in claim 9 wherein receives the information of the beginning of relevant active period from Node B.

11. device as claimed in claim 10, wherein the information of the beginning of relevant active period comprises the information of relevant DRX cycle length.

12. device as claimed in claim 8, wherein active period comprises the running time of first timer.

13. device as claimed in claim 12 wherein receives the information of the running time of relevant first timer from Node B.

14. device as claimed in claim 8, wherein shared control channel comprises physical downlink control channel (PDCCH).

15. be used in the mobile communication system sending the method for configuration information with the active period of controlling discontinuous reception (DRX) operating period subscriber equipment (UE) in Node B, this method comprises:

Send configuration information to UE, configuration information comprises that the information of the beginning of the information of relevant DRX cycle length, relevant active period reaches the information of relevant minimum active period length,

Wherein UE monitors control data via shared control channel during active period, in case during active period, receive the control data of the transmission of the new user data of indication via shared control channel, just prolong the duration of active period, and the control signal that in a single day receives the end of indication active period from Node B, just stop active period.

16. method as claimed in claim 15, wherein UE determines based on the information of the beginning of relevant active period whether the current time is the beginning of active period.

17. method as claimed in claim 15, wherein active period comprises the running time of first timer.

18. method as claimed in claim 17, wherein UE receives the information of the running time of relevant first timer from Node B.

19. method as claimed in claim 15, wherein shared control channel comprises physical downlink control channel (PDCCH).

20. be used in the mobile communication system sending the device of configuration information with the active period of controlling discontinuous reception (DRX) operating period subscriber equipment (UE) in Node B, this device comprises:

Transmitter is configured to send configuration information to UE, and configuration information comprises that the information of the beginning of the information of relevant DRX cycle length, relevant active period reaches the information of relevant minimum active period length,

Wherein UE monitors control data via shared control channel during active period, in case during active period, receive the control data of the transmission of the new user data of indication via shared control channel, just prolong the duration of active period, and the control signal that in a single day receives the end of indication active period from Node B, just stop active period.

21. device as claimed in claim 20, wherein UE determines based on the information of the beginning of relevant active period whether the current time is the beginning of active period.

22. device as claimed in claim 20, wherein active period comprises the running time of first timer.

23. device as claimed in claim 22, wherein UE receives the information of the running time of relevant first timer from Node B.

24. device as claimed in claim 20, wherein shared control channel comprises physical downlink control channel (PDCCH).

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