CN103228032B - In mobile communication system control discontinuous reception during active period method and apparatus - Google Patents
In mobile communication system control discontinuous reception during active period method and apparatus Download PDFInfo
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- CN103228032B CN103228032B CN201310189055.7A CN201310189055A CN103228032B CN 103228032 B CN103228032 B CN 103228032B CN 201310189055 A CN201310189055 A CN 201310189055A CN 103228032 B CN103228032 B CN 103228032B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The method and apparatus for providing active period during controlling discontinuous reception in mobile communication system.For user equipment in mobile communication system（UE）Middle control discontinuous reception（DRX）The method of active period during operation, this method include：During active period control data are monitored via shared control channel；Once receiving the control data for the transmission for indicating new user data via shared control channel during active period, just extend the duration of active period；And once just stopping active period to the control signal of the end of instruction active period from Node-B receiver.
Description
The application be the applying date be on March 28th, 2007, application No. is 200780010787.8, entitled " be used for
The divisional application of the application for a patent for invention of the method and apparatus of the discontinuous reception of connection terminal in mobile communication system ".
Technical field
The present invention relates generally to discontinuous reception (DRX) operations in mobile communication system.More particularly it relates to
One kind in connection terminal (connected terminal) using variable active period (active period) for being executed
The method and apparatus of DRX operations.
Background technology
Because communication device does not arrive the access of fixed cable network, wireless communication system is largely devised
System.Such wireless communication system includes mobile communication system, WLAN (WLAN), WiMAX (WiBro) and movement
Special (ad hoc) system.
Specifically, compared with other wireless communication systems, mobile communication system is based on user mobility.They finally make every effort to
Regardless of time and position communication service is provided to the mobile terminal of such as portable phone and radio pager.
Mobile communication system is synchronously or asynchronously operated.Specifically, universal mobile telecommunications service (UMTS) is to be based on
European Mobile Communication system, global system for mobile communications (GSM) and general packet radio service (GPRS), it is more with wideband code division
The third generation (3G) asynchronous mobile communiation system of location (WCDMA) operation.The third generation affiliate meter for being dedicated to UMTS standard
It draws (3GPP) and the next-generation UMTS system for being referred to as long term evolution (LTE) is being discussed.
LTE is to seek the skill commercialized, for 100Mbps or higher high speed packet communication at 2010 or so
Art.To do this, many schemes are being studied, such as existing on communication path to reduce by simplifying network configuration
Node number method or for as possible closely to the method for radio channel approximation wireless protocols.Finally, LTE
System will change into 2 nodes or 3 node frameworks from 4 existing node frameworks.
Fig. 1 illustrates the configurations of the LTE system of the application present invention.
With reference to figure 1, LTE system can be reduced to evolution node B (ENB) 100a to 100e and evolution gateway
The 2 node frameworks of GPRS service nodes (EGGSN) 102a and 102b.
It is connect with user equipment (UE) 104 by radio channel with ENB 100a to 100e equivalent existing node B.
Compared with traditional node B, ENB 100a to 100e provide more complicated function.
Include the real-time clothes such as based on the Internet protocol transport voice (VoIP) which imply service on a shared channel
Whole subscriber traffics of business, and therefore need in LTE system the status information for collecting particular UE 104 and other UE
With the device being scheduled to them.ENB 100a to 100e are responsible for the scheduling.
In order to reach the data rate up to 100Mbps, it is expected that LTE system is referred to as orthogonal frequency with 20-MHz bandwidth uses
Divide the wireless access technology of multiplexing (OFDM).By according to the channel status of UE 104, adaptive modulation and coding is applied to it
(AMC).That is, modulation scheme and channel encoding rate is adaptive selected for UE 104 according to channel status.
Equally with the up-link (E-DCH) of high-speed down link access (HSDPA) or enhancing, LTE system
Mixed automatic repeat request (HARQ) will be used between UE 104 and ENB 100a to 100e.HARQ is for by not deleting
By carrying out soft-combine to initially transmitting data and retransmitting data to increase successful receiving rate in the case of except initial transmission data
Scheme.Therefore, UE 104 is intended to ensure the receptivity of grouping by AMC and HARQ scheme.
Traditionally, UE revives (wake up) in the predetermined time, monitors predetermined channel in predetermined time cycle, and then
It is again introduced into suspend mode in an idle state.This is referred to as discontinuous reception operation (DRX), is for extending idle state
The mode of the stand-by period of UE.
Fig. 2 illustrates the sequential of the operations of the DRX in conventional mobile communications system.
With reference to figure 2, UE and node B reach an agreement to DRX configurations, rest period and according to the DRX alternate activity phases configured.
Rest period is that UE closes its receiver therefore minimizes the time cycle of power consumption during it.Active period is in its phase
Between UE in the case where its receiver is opened, execute the normal time cycle for receiving operation.Active period is also referred to as revived
Phase, and therefore herein with identical meaning, term " active period " and " waking " is interchangeably used.
DRX configurations are typically made of following element.
1.DRX cycle lengths 210 or 220：Interval between active period and next active period.By DRX cycle length,
Increase suspend mode and reduces the power consumption of UE.However, the paging that can increase in UE of increased DRX cycle length prolong
Late.Network signals DRX cycle length.
2. the initial position 205,215 or 225 of active period：Work is obtained from the identifier (ID) of UE and DRX cycle length
The initial position of jump phase.For example, calculating the initial position of active period by carrying out modular arithmetic to UE ID and DRX cycle length.
3. active period length 235：UE is kept to the timer period of revival during it in an active period.It is typical
Active period length is preset on ground.For example, the active period length in UMTS communication systems is 10msec.
UE calculates the initial position 230 of active period using UE ID and DRX cycle length 210 or 220, and from this
Downlink channel is received in the active period that beginning position 230 calculates.When there is no desired information on a downlink channel
When, UE closes its receiver and enters rest period.
It is illustrated for the connection UE, Fig. 2 in new LTE system, revived with every predetermined time interval and in pre- timing
Between the classical DRX operations that downlink channel are monitored in the period it is infeasible.
When UE is connected, it means that special services are underway for UE and exist between network and UE
With the associated user data of the service.The network that can carry out wireless spread-spectrum technology (RRL) is that UE retains service context.This
UE under state is referred to as connecting UE.
Correspondingly, it compared with the conventional DRX operation of idle state UE, is used to specify the connection in LTE system there are a kind of
The needs of the DRX operations of UE.
Invention content
It is at least to solve problem above and/or disadvantage in terms of example embodiment of the present invention, and following retouch at least is provided
The advantages of stating.Correspondingly, it is to provide a kind of holding for UE in mobile communication system in terms of example embodiment of the present invention
The method and apparatus of row its DRX operations.
The another aspect of example embodiment of the present invention provides a kind of for considering the UE in next generation mobile communication system
In grouped data amount set DRX cycle to variable method and apparatus.
The another aspect of example embodiment of the present invention provides a kind of for according to the service type in mobile communication system
Come adjust UE active period length method and apparatus.
According to the aspect of example embodiment of the present invention, a kind of holding for UE for the connection in mobile communication system is provided
The method of row DRX operations.In the DRX methods, UE from information of the Node-B receiver in relation to DRX cycle length, for obtaining work
The retrieval information of the initial position of jump phase and the information in relation to minimum active period length, use retrieved acquisition of information active
The initial position of phase, and be arranged to the first timer of DRX cycle length in the activation of the original position of active period and set
It is set to the second timer of minimum active period length.UE monitors the presence of downlink packets during minimum active period length.
In the absence of during minimum active period when downlink packet, UE is converted to suspend mode.When there are downlink packets,
UE receives the downlink packets, it is determined whether there is the instruction information for being used to indicate the end that grouping receives, when there are institutes
When stating instruction information, end of packet receives, and is converted to suspend mode.When first timer expires, UE turns from suspend mode
It is changed to active mode.
According to the another aspect of example embodiment of the present invention, provide a kind of for connection in mobile communication system
The method that DRX operations are executed in UE.In the DRX methods, UE from Node-B receiver DRX cycle length, for obtaining active period
Initial position retrieval information, minimum active period length and active period end interval, use retrieved acquisition of information active
The initial position of phase, and be arranged to the first timer of DRX cycle length in the activation of the original position of active period and set
It is set to the second timer of minimum active period length.UE monitors the presence of downlink packets during minimum active period length.
In the absence of during minimum active period length when downlink packet, UE is converted to suspend mode.When there are downlinks point
When group, UE receives the downlink packets according to predetermined mix automatic repeat request (HARQ) scheme, and activation is arranged to
The third timer of active period end interval starts or restarts third timer wherein when user equipment (UE) receives new grouping.
When third timer expiration, UE is converted to suspend mode.When first timer expires, UE is converted to active from suspend mode
Pattern.
According to the another aspect of example embodiment of the present invention, provide a kind of for connection UE in mobile communication system
The middle equipment for executing DRX operations, wherein DRX controllers use the information from the related DRX cycle length of Node-B receiver, are used for
The retrieval information for obtaining the initial position of active period obtains the start bit of active period with the information in relation to minimum active period length
It sets, be arranged to the first timer of DRX cycle length in the original position activation of active period and be arranged to minimum active
The second timer of phase length monitors the presence of downlink packets, when in minimum active period during minimum active period length
Shutter transceiver when downlink packet in the absence of during length, and when there are downlink packets, transceiver is opened, is received
It is used to indicate the instruction information for the end that grouping receives, and transceiver is controlled according to the instruction information；Demultiplexer
(DEMUX) it determines whether grouping has the instruction information, and information is indicated to described in the DRX controller reportings；And institute
Transceiver is stated, for being opened or closed under the control of the DRX controllers.
Specifically, it according to the another aspect of example embodiment of the present invention, provides a kind of in mobile communication system
User equipment (UE) in control discontinuous reception (DRX) operate during active period method, this method includes：In active period
Period monitors control data via downlink shared control channel；Once via downlink Compliance control during active period
Channel receives the existing control information of the instruction grouping to be received, and just maintains active period；And once from Node-B receiver to finger
Show the control signal of the end of active period, just stops active period.
According to the another aspect of example embodiment of the present invention, provides and a kind of set for user in mobile communication system
The device of active period during control discontinuous reception (DRX) operates in standby (UE), the device include：DRX controllers, are configured
To monitor control data via downlink shared control channel during active period, once via downlink chain during active period
Road shared control channel receives the existing control information of the instruction grouping to be received, and active period is just maintained, and once from section
Point B receives the control signal of the end of instruction active period, just stops active period.
According to the another aspect of example embodiment of the present invention, provide in a kind of mobile communication system in the nodeb
Configuration information is sent with the method for the active period of user equipment (UE) during controlling discontinuous reception (DRX) operation, this method packet
It includes：Configuration information is sent to UE, configuration information includes the information in relation to DRX cycle length, the information of the beginning in relation to active period
And the information in relation to minimum active period length, wherein UE are monitored via downlink shared control channel during active period and are controlled
Data control once being received via downlink shared control channel during active period existing for the instruction grouping to be received
Information just maintains active period, and once just stopping active to the control signal of the end of instruction active period from Node-B receiver
Phase.
According to the another aspect of example embodiment of the present invention, provide in a kind of mobile communication system in the nodeb
Configuration information is sent with the device of the active period of user equipment (UE) during controlling discontinuous reception (DRX) operation, the device packet
It includes：Transmitter is configured as sending configuration information to UE, and configuration information includes information in relation to DRX cycle length, related active
The information of the beginning of phase and information in relation to minimum active period length, wherein UE is during active period via the shared control of downlink
Channel monitoring processed controls data, once receive what instruction to be received via downlink shared control channel during active period
Grouping is existing to control information, just maintains active period, and once from Node-B receiver to the control letter of the end of instruction active period
Number, just stop active period.
Description of the drawings
By next in conjunction with the detailed description of attached drawing, the above and other purposes of particular exemplary embodiment of the invention,
Feature and advantage will be apparent from, wherein：
Fig. 1 illustrates the configurations of the LTE system of the application present invention；
Fig. 2 illustrates the sequential of the operations of the DRX in conventional mobile communications system；
Fig. 3 illustrates the DRX operations with variable active period length according to the present invention；
Fig. 4 be it is according to the present invention in the band that active period terminates in the case of (in-band) signaling, the operation of UE
Flow chart；
Fig. 5 be it is according to the present invention outside the band that active period terminates in the case of (out-band) signaling, the operation of UE
Flow chart；
Fig. 6 be it is according to the present invention at the end of MS determines active period consider downlink activity (activity),
The flow chart of the operation of UE；
Fig. 7 is the block diagram of UE receivers according to the present invention；
Fig. 8 illustrates the sequential of the DRX operations according to the present invention for considering RLC acknowledgements (ACK) signal；
Fig. 9 is the flow chart for the DRX operations that RLC ack signals are considered in UE according to the present invention；And
Figure 10 is the block diagram of UE receivers according to the present invention.
In attached drawing, identical attached drawing reference marker will be understood to refer to identical element, feature and structure.
Specific implementation mode
To help complete understanding of the present invention, the thing of such as detailed configuration and element defined in specification is provided
.Correspondingly, those skilled in the art are it will be recognized that can make the various changes of embodiment described here and repair
Change, without departing from scope and spirit of the present invention.Equally, for clarity and conciseness, the description of known function and construction is omitted.
Although describing the example embodiment of the present invention in the context of LTE system, it is to be appreciated that they can be
Other mobile communication system using DRX are applied in the case of without modification.
The example embodiment of the present invention defines the DRX operations of the connection UE in next generation mobile communication system.It is preferred that but not
It is necessarily, to consider service characteristic to configure the DRX of connection UE.Service type is may depend on, with every DRX cycle (DRX_
Cycle) come for connection UE generate different data volumes.In other words, it is needed in each DRX cycle according to during DRX cycle
The data volume to be sent change UE monitor downlink channel duration.
For example, when UE using transmission control protocol (TCP) come when receiving file download service, in view of the characteristic of TCP, under
A grouping is sent on line link first, sends two groupings in response to the TCP ACK from UE, and then in response to from UE
The TCP ACK of described two groupings send four groupings.TCP file download services are characterized in that down link data with biography
Specified time interval between sending and increase.In view of this trend, the active period of the UE in service is preferably gradually increased
Length.
In addition to file download service, unpredictability and noncontinuity in data generation are also the characteristic of packet service.
Therefore, packet service may face different portfolios in each DRX cycle and generate state.Correspondingly, demonstration of the invention
Embodiment is intended to provide the method for the DRX cycle changed according to the grouped data amount in UE to be arranged.
With reference to figure 3, node B signals DRX cycle length 310, the initial position 305 for obtaining active period 350
Information (hereinafter referred to as initial position acquisition information) and minimum active period length 340a or 340b.
UE revives at each initial position of active period 350,360 and 370 305,320 and 325.When there is no to receive
Data when, UE be kept minimum active period length and enter suspend mode.When there are the data to be received, UE remains active
Phase until being received entirely the data, and subsequently into suspend mode.
UE calculates active period 350 with preordering method (for example, carrying out modular arithmetic by ID to UE and DRX cycle length)
Initial position 305.When active period starts at the time 305, UE is activated.
The range of the length of active period 350,360 and 370 from minimum length 340a or 340b to DRX cycle length 310 or
380.At the initial position of active period 350 305, UE receives grouping on a downlink channel.Reference numeral 340a and 340b
Indicate same minimum active period length.
About active period 360, grouping is received successively in minimum active period length 340a.UE can be by with scheduled side
Whether the grouping that method determination is each received is the last one to terminate active period 360.
It can be received in scheduled method to realize to be grouped depending on communication system.For example, in LTE system, UE monitoring
Downlink control channel with determine whether there is to be received grouping and when exist the grouping to be received when, it receive this point
Group.
About active period 370, UE revives at the time 325, during concurrent now scheduled minimum active period length 340b
There is no the groupings to be received.Therefore, UE terminates active period 370 and is transformed into suspend mode until next active period arrives.
On the other hand, it revives at the time 320 as UE and determines that presence will connect before minimum active period length 360 expires
When the grouping of receipts, it starts to be grouped from Node-B receiver.
The in-band information that includes by grouping signals active period 350,360 and 370 by control channel
End position.Alternatively, UE can automatically determine the end position of active period 350,360 and 370 according to scheduled rule.
1. in the case of notifying active period to terminate by in-band information wherein, node B is during active period last
The last grouping of 1 bit mark (Last Packet Flag) is configured as (YES) in grouping.It is set once receiving and having
Be set to the grouping of the last grouping mark of YES, UE maintain active period until when UE detects that grouping is the last one in HARQ
The grouping stored in processor is fully processed, and when this processing is complete, and UE enters suspend mode.
2. at the end of notifying active period by control channel, UE maintains active period until receiving when statement active period
Termination when the grouping through being subject to processing in HARQ processors, and when this is finished receiving, UE is converted to suspend mode.
3. if be not received by grouping in predetermined time cycle, then it is assumed that active period has terminated, and UE can be converted
For suspend mode.
As described above, when there is no any grouping to be received, active period is kept into minimum active period length.Work as presence
When any grouping to be received, terminated to signal active period by out of band signal in control channel or in-band information,
Or UE automatically determines that active period terminates.In this way, active period is adjusted to variable length when needed, thereby, it is ensured that effectively
DRX operation.
Embodiment 1
With reference to figure 4, at the end of notifying active period by being finally grouped mark, UE is operated in the following manner.
In step 405, UE receives information in relation to DRX cycle length during call setup, initial position obtains letter
Breath and minimum active period length.Then, UE is ready for DRX operations.
In step 410, UE obtains active period from initial position retrieval information (for example, the ID of UE and DRX cycle length)
Initial position, and determine active period initial position whether arrived.
If active period not yet starts, UE is maintained at rest period until the initial position of active period in step 435.
UE knows that at the DRX cycle length after the initial position of previous active period, active period starts.
When active period starts, ((DRX cycle is long by DRX_CYCLE_LENGTH by Active Timer T in step 415 by UE
Degree)) and timer T (MINIMUM_ACTIVE (minimum is active)).Timer T (DRX_CYCLE_LENGTH) is set to
The timer of DRX cycle length T (DRX_CYCLE_LENGTH), and timer T (MINIMUM_ACTIVE) is set to most
The timer of small active period length T (MINIMUM_ACTIVE).
At step 420, UE monitors shared control channel, to determine whether there is the grouping to be received.If until fixed
When device T (MINIMUM_ACTIVE) expire be not present the grouping to be received, then in step 435 by UE be placed in suspend mode until
Next active period starts.When timer T (DRX_CYCLE_LENGTH) expires, next active period starts.
On the contrary, if to be connect there are any before timer T (MINIMUM_ACTIVE) expires at step 420
The grouping of receipts, then UE the grouping is received according to HARQ operation in step 425.If being successfully received grouping, UE is in step
The last grouping mark for receiving grouping is checked in 430.
If finally grouping mark is arranged to YES, UE goes to step 440.If finally grouping mark is arranged to
No (NO), then UE is back to step 425, to continue grouping reception.
In step 440, when UE has found that received grouping is the last one, it completes to store in HARQ processors
HARQ grouping processing.Then, UE enters suspend mode until next active period starts.As timer T (DRX_CYCLE_
When LENGTH) expiring, next active period starts.
The processing of HARQ groupings is completed to mean to normally receive by HARQ operation to be stored in HARQ processors
It is grouped and therefore sends HARQ ACK, or no matter the mistake in grouping, new point of reception in identical HARQ processing for the grouping
The group and reception being therefore grouped in HARQ operation finally fails.
That is, can not possibly be properly received and be somebody's turn to do when being successfully received the grouping stored in HARQ processors or UE determinations
When grouping, it is believed that handle the grouping completely.
Embodiment 2
With reference to figure 5, other than UE determines the mode of the termination of active period, UE is with the first example embodiment with the present invention
In same way operated.Therefore, a pair step different from the illustrated steps of Fig. 4, which is made, is described below.That is,
Since the step 505 of Fig. 5 is executed to step 520 in a manner of identical with the step 405 to 420 of Fig. 4, so it will not be described
.
In step 525, UE is grouped according to scheduled HARQ protocol from Node-B receiver.
Because UE continues to downlink control channel, it is in step 530 on the downlink control channels
Monitoring is used to indicate the reception for the signal that active period terminates.
Once receiving the signal, UE proceeds to step 540, and otherwise, and UE is connect back to step 525 with continuing grouping
It receives.
UE completes to deposit in HARQ processors when it receives and is used to indicate signal that active period terminates in step 540
HARQ groupings processing, and enter suspend mode in step 535 and start until next active period.When in step 515
When the timer T (DRX_CYCLE_LENGTH) of activation expires, next active period starts.
Embodiment 3
With reference to figure 6, in step 605, UE receives information, start bit in relation to DRX cycle length during call setup
It sets and obtains information, minimum active period length and active period end interval.Then, UE is ready for DRX operations.Minimum active period
Length can be identical as the end interval of active period.In the case, one of both can only be signaled.Then, UE is accurate
It is standby to carry out DRX operations.
In step 610, UE obtains active period from initial position retrieval information (for example, the ID of UE and DRX cycle length)
Initial position, and determine active period initial position whether arrived.
If active period not yet starts, UE is maintained at rest period until the initial position of active period in step 635.
The initial position of acquisition of information active period, and DRX weeks after the initial position of previous active period are retrieved from initial position
At phase length, next active period starts.
When active period starts, UE Active Timer T (DRX_CYCLE_LENGTH) and another timer in step 615
T(MINIMUM_ACTIVE).Timer T (DRX_CYCLE_LENGTH) is set to DRX cycle length T (DRX_CYCLE_
LENGTH timer), and timer T (MINIMUM_ACTIVE) is set to minimum active period length T (MINIMUM_
ACTIVE timer).
In step 620, UE monitors shared control channel, to determine whether there is the grouping to be received.If until fixed
When device T (MINIMUM_ACTIVE) expire just presence the grouping to be received, then in step 635 by UE be placed in suspend mode until
Next active period starts.When timer T (DRX_CYCLE_LENGTH) expires, next active period starts.
On the contrary, if to be connect there are any before timer T (MINIMUM_ACTIVE) expires in step 620
The grouping of receipts, then UE the grouping is received according to HARQ protocol in step 625.
In step 627, UE starts (or restarting) and is arranged to active period end interval T (active_period_end)
Timer T (active_period_end).Timer T (active_period_end) is used to terminate active period, unless
Grouping is received in time T (active_period_end).Once receiving initial packet, UE starts timer T (active_
Period_end), and when UE receives next grouping, restart the timer.
The next grouping can be (1) newly grouping either (2) newly grouping or re-transmission grouping.
That is, only when the next grouping is new is grouped or when the next grouping is new grouping or is retransmitted
When grouping, UE can restart timer T (active_period_end).For convenience's sake, before the case where, is referred to as method
1 and later the case where be referred to as method 2.
In act 630, UE determines whether timer T (active_period_end) is expired, that is to say, that is
It is no not yet to receive grouping during time T (active_period_end).If timer T (active_period_end)
Expired, then UE goes to step 640.If timer T (active_period_end) is still being run, UE repeats step
625 and 627.
In step 640, UE depends on method 1 or method 2 is operated in different ways.
In method 1, once overtime, UE completes the place of the HARQ stored in HARQ processors groupings in step 640
Reason, and subsequently into suspend mode until next active period starts.When timer T (DRX_CYCLE_LENGTH) expires, under
One active period starts.
In method 2, because the end interval of active period is relatively arranged with the reception of any downlink packets, without
The new grouping of pipe retransmits grouping, so UE enters suspend mode in the case where the processing without waiting for HARQ groupings is completed.
If node B does not retransmit specific cluster within the end interval of active period, UE is switched to suspend mode.Therefore, node B and
UE should send and receive the re-transmission version of the grouping during active period end interval.
In other words, it is grouped in without reaching UE within the end interval of active period if retransmitted, which imply node B
The re-transmission of the grouping has been abandoned, and the grouping therefore can not possibly be properly received for UE.Therefore, UE deletes it and retransmits version still
Grouping not being received, being stored in HARQ processors, and immediately enter suspend mode.
With reference to figure 7, UE receivers 700 include：Demultiplexer (DEMUX) 705, HARQ processors 715, control channel
Processor 720, DRX controllers 725 and receiver 730.
Under the control of DRX controllers 725, receiver 730 is opened or closed.DRX controllers 725 close in suspend mode
Receiver is closed, and is opened it in active period.HARQ processors 715 are according to scheduled HARQ operation come to being connect from receiver 730
The HARQ groupings of receipts are handled, and errorless HARQ groupings are provided to DEMUX 705.
DEMUX 705 checks the last grouping mark of received HARQ groupings.If finally grouping mark is arranged to
YES, then DEMUX 705 reports it to DRX controllers 725, and received grouping is also provided to higher.
Once realizing the reception of the grouping with the last grouping mark for being arranged to YES, DRX controllers 725 monitor
The state of HARQ processors 715.When the processing of HARQ processors 715 is completed, DRX controllers 725 enter suspend mode, also
It is to say, closes receiver 730.
Control channel processor 720 handles the information received on downlink shared control channel.If with
With reference to figure 5 describe the second example embodiment of the present invention it is the same, work is signaled by downlink shared control channel
The end of jump phase, then end of the control channel processor 720 to the report active period of DRX controllers 725.
Then, DRX controllers 725 monitor the state of HARQ processors 715.When the processing of HARQ processors 715 is completed,
DRX controllers 725 enter suspend mode, that is to say, that close receiver 730.
When UE receivers 700 receive last grouping as the first example embodiment of the invention, preferably but it is not required
Ground, it enters suspend mode after sending RLC ranks ack signal (abbreviation RLC ack signals), rather than immediately enters suspend mode
Pattern.
This is because in packet service, in order to improve the reliability of transmission/reception, UE with use be different from HARQ from
The RLC acknowledgements pattern (RLC AM) of dynamic repetitive requests (ARQ) is operated.
In ARQ operations, transmitter inserts sequence numbers into grouping before transmission, and receiver is by checking sequence
Number determine whether there is the grouping of any failure.For failed packet, receiver to transmitter by sending non-acknowledgement
(NACK) signal asks the re-transmission of failed packet.For the grouping of successful reception, receiver sends ack signal to transmitter.
Loading ACK signal and NACK signal in the control message for being referred to as RLC state reports.
If providing the service for needing DRX in RLC AM, it is grouped to the end once receiving, UE must send last point
The RCL ack signals of group.Therefore, UE enters suspend mode preferably after sending RLC ack signals, rather than immediately enters
Suspend mode.
In this way, compared with the first example embodiment of the present invention, will refer to being used to once receive grade and being associated with finally to be grouped
Show that description is made in the grouping of symbol, the method into suspend mode after sending the RLC ack signals being finally grouped.
UE is grasped in the active period that do not receive grouping in a manner of identical with the first example embodiment of the invention
Make, and therefore the UE descriptions operated in the active period that do not receive grouping are not provided herein.
With reference to figure 8, node B signals DRX cycle length 810, the initial position 805 for obtaining active period 850
Information and minimum active period length 840a or 840b.
UE revives at each initial position of active period 850,860 and 870 805,820 and 825.When there is no to receive
Data when, UE be kept minimum active period length and enter suspend mode.When there are the data to be received, UE remains active
Phase until being received entirely the data, and subsequently into suspend mode.
UE calculates active period according to preordering method (for example, carrying out modular arithmetic by ID to UE and DRX cycle length)
850 initial position 805.When active period starts at time point 305, UE is activated.
The length of active period 850,860 and 870 is from minimum length 840a or 840b to DRX cycle length 810 or 880
It is changeably changed in range.At the initial position of active period 850 805, UE receives grouping on a downlink channel.Attached drawing mark
Remember that 840a and 840b indicates physically identical minimum active period length.
About active period 860, grouping is received successively in minimum active period length 840a.UE can pass through each institute of determination
Whether the grouping of reception is the last one to terminate active period 860.
For example, UE revives in the original position of active period, and monitor downlink control channel.That is, most
Before small active period length 840a terminates, downlink control channel and downlink packets are sent to UE.UE receives downlink chain
Road is grouped the grouping 880 that last packet indicator is associated with until receiving grade.RLC control letters may be used in last packet indicator
Number form.
In the present invention first and the 4th example embodiment, UE is differently carried out in the active period with grouping to be received
Operation, as described below.
In the first example embodiment of the present invention, it is arranged to the last grouping of YES when UE is received entirely grade and is associated with
When the grouping of mark, it terminates active period, and is transformed into suspend mode.
In the 4th example embodiment of the present invention, when UE receives grouping and the completion that grade is associated with last packet indicator
When having the successful reception of smaller sequence number being all grouped compared with the sequence number being finally grouped, it sends described with smaller
The ack signal of the grouping of sequence number terminates active period, and subsequently into suspend mode.
Assuming that indicating the sequence number of grouping by x to x+n, the RLC entities 945 for each application configuration in UE pass through
The sequence number of received RLC Packet Data Units (PDU) is checked to determine whether not yet to receive any RLC PDU.Once
The grouping with last packet indicator is received, UE is sent on the uplink channel has the reception shape in relation to RLC PDU
The RLS state reports 885 of state information.
If whole RLC PDU (RLC PDU [x] arrive RLC PDU [x+n]), RLC state reports has been received
The ack signal of the 885 carrying RLC PDU.After sending RLS state reports 885, UE terminates active period.
On the other hand, if not yet receiving the RLC PDU [x+m] among RLC PDU [x] to RLC PDU [x+n],
UE is in the NACK signal that RLC state reports 885 include the RLC PDU to fail.Then, UE maintains active period until from node B
The RLC PDU of failure are retransmitted completely.
With reference to figure 9, in step 905, UE receives information, start bit in relation to DRX cycle length during call setup
It sets and obtains information and minimum active period length.Then, UE is ready for DRX operations.
In step 910, UE obtains information (for example, the ID of UE and DRX cycle length) from initial position and obtains active period
Initial position, and determine active period initial position whether arrived.
If active period not yet starts, UE is maintained at rest period until the initial position of active period in step 935.
At the DRX cycle length after the initial position of active period, next active period starts.
When active period starts, UE Active Timer T (DRX_CYCLE_LENGTH) and another timer in step 915
T(MINIMUM_ACTIVE).Timer T (DRX_CYCLE_LENGTH) is set to DRX cycle length T (DRX_CYCLE_
LENGTH timer), and timer T (MINIMUM_ACTIVE) is set to minimum active period length T (MINIMUM_
ACTIVE timer).
In step 920, UE monitors shared control channel, to determine whether there is the grouping to be received.If until fixed
When device T (MINIMUM_ACTIVE) expire just presence the grouping to be received, then in step 935 by UE be placed in suspend mode until
Next active period starts.When timer T (DRX_CYCLE_LENGTH) expires, next active period starts.
On the contrary, if to be connect there are any before timer T (MINIMUM_ACTIVE) expires in step 920
The grouping of receipts, then UE the grouping is received according to HARQ operation in step 925.
If being successfully received the grouping, UE is in step 1030 for example, by checking the control in the grouping cascade
Information determines whether received grouping is the last one.When sending last RLC PDU, RLC transmitters are in RLC PDU
Control information including being used to indicate last RLC PDU.Therefore, UE is determined in step 1030 in the RLC PDU received
The control information for being used to indicate last RLC PDU whether there is.
If the grouping received is not the last one, UE continues grouping in step 925 and receives, until receiving tool
It is useful for the grouping of control information for indicating finally to be grouped.
If the grouping received is the last one, UE is configured to that the RCL received at present is presented in step 940
The RLC state reports of the reception state of PDU.RLC state reports include failed packet RLC sequence numbers and receive be grouped
RLC sequence numbers.As stated above, the RLC sequence numbers of failed packet are referred to as NACK, and receive the RLC sequence numbers of grouping
It is referred to as ACK.Therefore, RLC state reports include NACK and ACK.NACK is the set of serial numbers of failed packet, and ACK is to be connect
The set of serial numbers of contracture group.
When any NACK is not present in RLC state reports, UE checks whether RLC state reports wrap in step 945
Include the ACK of last RLC PDU and all other RLC PDU with smaller sequence number compared with the sequence number of last RLC PDU
ACK.If inspection result is YES, UE goes to step 950.If inspection result is NO, imply the presence of what needs retransmitted
Grouping, then UE goes to step 955.
UE sends RLC state reports in step s 950, and enters suspend mode in step 935 until next active period
Start.When timer T (DRX_CYCLE_LENGTH) expires, next active period starts.
In step 955, UE sends RLC state reports, and waits for until needing the RLC retransmitted in RLC state reports
The re-transmission of grouping is completed.Then, it includes the whole with smaller sequence number compared with the sequence number of last RLC PDU that UE, which is sent,
The RLC state reports of the ACK of RLC PDU.UE enters suspend mode in step 935, until next active period starts.
With reference to figure 10, UE receivers can have multiple RLC entities 1035,1040 and 1045 of respectively application configuration.
Some of which can be configured to operate with DRX mode.For example, RLC entities 1045 are operated with DRX mode.
When next condition all meets, RLC entities 1045 ask DRX controllers 1025 to terminate active period.
Condition 1：Receive the RLC PDU that grade is associated with last packet indicator.
Condition 2：It is successfully received the whole groupings received during active period.
Condition 3：The RLC state reports with the ACK being all grouped received during active period are sent completely.
Similarly, RLC entities 1045 determine whether there is point of any failure by checking the sequence number of RLC PDU
Group, and RLC state reports are constructed according to definitive result.
Once receiving the signal for being used to indicate active period and terminating from the RLC entities 1045 operated with DRX mode, DRX controls
Device 1025 processed terminates active period, and suspend mode is maintained to start until next active period.
Demultiplexer/multiplexer (DEMUX/MUX) 1005 will be from rlc layer (that is, RLC entities 1035,1040 and
1045) the RLC PDU received are multiplexed as MAC PDU, or before being transmitted to RLC entities 1035,1040 and 1045, to from
The MAC PDU that HARQ processors 1015 receive de-multiplexed are RLC PDU.
HARQ processors 1015 are handled the HARQ groupings received from transceiver 1030 according to scheduled HARQ operation,
And errorless HARQ groupings are provided to DEMUX MUX 1005.The DEMUX of DEMUX/MUX 1005 is to rlc layer 1035,1040 and
1045 provide received HARQ groupings.
Similarly, HARQ processors 1015 provide the DEMUX from DEMUX/MUX 1005 according to HARQ operation to transceiver
The MAC PDU of reception, and transceiver 1030 sends the MAC PDU to node B.
Control channel processor 1020 handles the information received from downlink shared control channel.If the letter
The grouping that UE is gone in breath instruction exists, then control channel processor 1020 reports that the grouping to be received is deposited to DRX controllers 1025
.
DRX controllers 1025 find the initial position of active period and open receiver in the original position.If until
Minimum active period length expires, DRX controllers 1025 receive from control channel processor 1020 and are used to indicate and to connect not yet
The grouping of receipts is existing to be reported, then it terminates active period.
On the other hand, it is used to indicate the existing report of the grouping to be received once receiving, DRX controllers 1025 maintain to live
The jump phase, until it receives from RLC entities 1045 signal for the end for being used to indicate active period.
As from the above description and it will be evident that the present invention by consider next generation mobile communication system in service characteristic come for
Connection UE defines DRX operations and increases the UE stand-by period.Therefore, the power consumption of UE is minimized.
The variable packet service of state is generated for wherein every DRX cycle, portfolio, according to the portfolio at receiving time
Demand come adjust active period length provide DRX operation.
Similarly, UE confirm be properly received include retransmit be grouped grouping and send the grouping RLCACK signals it
Enter suspend mode afterwards.Therefore, the receptivity of grouping is increased.
Although the present invention, the technology of this field has shown and described by reference to the particular exemplary embodiment of the present invention
Personnel will be understood that, can carry out various changes of form and details wherein, without departing from by appended claims and they
The spirit and scope of the present invention that are further limited of equivalent.
Claims (12)
1. a kind of work for during control discontinuous reception (DRX) operation in user equipment (UE) in mobile communication system
The method of jump phase, this method include：
By reviving in each original position of active period control data are monitored via downlink shared control channel；
Once receiving the instruction grouping to be received via downlink shared control channel during minimum active period length to deposit
Control information, just maintain active period；And
Once just stop active period to the control signal of the end of instruction active period from Node-B receiver,
Wherein active period includes the run time for the timer for being arranged to minimum active period length, and
Wherein from information of the Node-B receiver in relation to minimum active period length.
Further include that current time is determined based on the information of the initial position in relation to active period 2. the method as described in claim 1
Whether be active period beginning.
3. method as claimed in claim 2, wherein the information from initial position of the Node-B receiver in relation to active period.
4. method as claimed in claim 3, wherein the information of the initial position in relation to active period includes related DRX cycle length
Information.
5. a kind of work for during control discontinuous reception (DRX) operation in user equipment (UE) in mobile communication system
The device of jump phase, the device include：
DRX controllers are configured as reviving come via downlink Compliance control by each original position in active period
Channel monitoring controls data, once receiving instruction via downlink shared control channel in minimum active period length will receive
Grouping it is existing control information, active period is just maintained, and once from Node-B receiver to the control of the end of instruction active period
Signal just stops active period,
Wherein active period includes the run time for the timer for being arranged to minimum active period length, and
Wherein from information of the Node-B receiver in relation to minimum active period length.
6. device as claimed in claim 5, wherein DRX controllers are worked as based on the information determination of the initial position in relation to active period
The preceding time whether be active period beginning.
7. device as claimed in claim 6, wherein the information from initial position of the Node-B receiver in relation to active period.
8. device as claimed in claim 7, wherein the information of the initial position in relation to active period includes related DRX cycle length
Information.
9. operating the phase for sending configuration information in the nodeb to control discontinuous reception (DRX) in a kind of mobile communication system
Between user equipment (UE) active period method, this method includes：
Configuration information is sent to UE, configuration information includes the information in relation to DRX cycle length, the information of the beginning in relation to active period
And the information in relation to minimum active period length,
Wherein UE is controlled by reviving in each original position of active period to be monitored via downlink shared control channel
Data are deposited once receiving the instruction grouping to be received via downlink shared control channel during minimum active period length
Control information, just maintain active period, and once from Node-B receiver to instruction active period end control signal, just
Stop active period,
Wherein active period includes the run time for the timer for being arranged to minimum active period length, and
Wherein UE is from information of the Node-B receiver in relation to minimum active period length.
10. method as claimed in claim 9, wherein UE determine current time based on the information of the initial position in relation to active period
Whether be active period beginning.
11. operating the phase for sending configuration information in the nodeb to control discontinuous reception (DRX) in a kind of mobile communication system
Between user equipment (UE) active period device, which includes：
Transmitter is configured as sending configuration information to UE, and configuration information includes information in relation to DRX cycle length, related living
The information of the beginning of jump phase and information in relation to minimum active period length,
Wherein UE is controlled by reviving in each original position of active period to be monitored via downlink shared control channel
Data are deposited once receiving the instruction grouping to be received via downlink shared control channel during minimum active period length
Control information, just maintain active period, and once from Node-B receiver to instruction active period end control signal, just
Stop active period,
Wherein active period includes the run time for the timer for being arranged to minimum active period length, and
Wherein UE is from information of the Node-B receiver in relation to minimum active period length.
12. device as claimed in claim 11, wherein UE determine current based on the information of the initial position in relation to active period
Between whether be active period beginning.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20060027986 | 2006-03-28 | ||
| KR10-2006-0027986 | 2006-03-28 | ||
| KR10-2006-0085757 | 2006-09-06 | ||
| KR1020060085757A KR101221443B1 (en) | 2006-03-28 | 2006-09-06 | Method and apparatus for discontinuous reception of a connected terminal in mobile communication system |
| CN2007800107878A CN101411095B (en) | 2006-03-28 | 2007-03-28 | Method and apparatus for discontinuous reception of connected terminal in a mobile communication system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2007800107878A Division CN101411095B (en) | 2006-03-28 | 2007-03-28 | Method and apparatus for discontinuous reception of connected terminal in a mobile communication system |
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|---|---|
| CN103228032A CN103228032A (en) | 2013-07-31 |
| CN103228032B true CN103228032B (en) | 2018-07-27 |
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| CN201310189055.7A Active CN103228032B (en) | 2006-03-28 | 2007-03-28 | In mobile communication system control discontinuous reception during active period method and apparatus |
| CN201310194929.8A Active CN103338501B (en) | 2006-03-28 | 2007-03-28 | The method and apparatus of active phase during control discontinuous reception in mobile communication system |
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| CN201310194929.8A Active CN103338501B (en) | 2006-03-28 | 2007-03-28 | The method and apparatus of active phase during control discontinuous reception in mobile communication system |
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| JP (1) | JP5564585B2 (en) |
| KR (1) | KR101221443B1 (en) |
| CN (2) | CN103228032B (en) |
| IN (1) | IN2014MN01768A (en) |
| RU (1) | RU2399158C2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2068484B1 (en) | 2007-12-05 | 2016-05-04 | Innovative Sonic Limited | Method and apparatus for improving discontinuous reception for a wireless communication system |
| US9504083B2 (en) | 2008-01-10 | 2016-11-22 | Innovative Sonic Limited | Method and related communications device for improving discontinuous reception functionality |
| KR101807725B1 (en) | 2010-03-09 | 2017-12-11 | 삼성전자주식회사 | Communication method of transmitting device and receiving device |
| US9363799B2 (en) | 2011-10-31 | 2016-06-07 | Lg Electronics Inc. | Method for transmitting an uplink control signal, user equipment, method for receiving an uplink signal, and base station |
| US8953478B2 (en) * | 2012-01-27 | 2015-02-10 | Intel Corporation | Evolved node B and method for coherent coordinated multipoint transmission with per CSI-RS feedback |
| US9942846B2 (en) * | 2013-12-05 | 2018-04-10 | Qualcomm Incorporated | Delaying radio link control retransmissions |
| CN110140417B (en) | 2016-07-28 | 2020-11-03 | Oppo广东移动通信有限公司 | Communication method, communication device, communication apparatus, and computer-readable medium |
| US11013055B2 (en) | 2016-10-07 | 2021-05-18 | Sony Corporation | Discontinuous reception |
| CN108690017B (en) * | 2018-05-04 | 2021-06-18 | 新乡学院 | Preparation method of rhodium-catalyzed moxifloxacin side chain intermediate |
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Also Published As
| Publication number | Publication date |
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| JP5564585B2 (en) | 2014-07-30 |
| KR101221443B1 (en) | 2013-01-11 |
| CN103338501B (en) | 2016-12-28 |
| RU2008142553A (en) | 2010-05-10 |
| RU2399158C2 (en) | 2010-09-10 |
| IN2014MN01768A (en) | 2015-07-03 |
| CN103228032A (en) | 2013-07-31 |
| CN103338501A (en) | 2013-10-02 |
| KR20070097282A (en) | 2007-10-04 |
| JP2013085299A (en) | 2013-05-09 |
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