CN102082626A - Method, system and device for receiving process of downlink data - Google Patents
Method, system and device for receiving process of downlink dataDownload PDFInfo
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- CN102082626A CN102082626ACN2010101630293ACN201010163029ACN102082626ACN 102082626 ACN102082626 ACN 102082626ACN 2010101630293 ACN2010101630293 ACN 2010101630293ACN 201010163029 ACN201010163029 ACN 201010163029ACN 102082626 ACN102082626 ACN 102082626A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower using a pre-established activity schedule, e.g. traffic indication frame
- 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]
- 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
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/188—Time-out mechanisms
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- 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
Description
Technical field
The present invention relates to wireless communication technology, particularly a kind of downlink data receives the mthods, systems and devices of handling.
Background technology
LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) system has defined with lower node, interface and link after introducing Relay (relaying) node, shown in Figure 1A,
Node comprises:
Donor-eNB: with RN (relaying) equipment the eNB (evolution base station) of wireless connections is arranged, be abbreviated as DeNB;
Relay-Node: be present in the entity between DeNB and the UE, be abbreviated as RN equipment;
Relay-UE: the UE with RN equipment carries out data interaction is abbreviated as R-UE;
Grand UE: directly and the DeNB UE that carries out data interaction.
Interface comprises:
Un interface: the interface between RN equipment and the DeNB;
Interface between Uu interface: UE and the RN equipment.
Radio Link comprises:
Backhaul link: back haul link, with Un interface link corresponding;
Access link: access link, with Uu interface link corresponding;
Direct link: the direct projection link, DeNB and grand UE carry out the link of transfer of data.
Downlink transfer behind the introducing RN equipment: the data that arrive UE under the RN equipment need send to RN equipment through descending back haul link by DeNB, send to UE by RN equipment through descending access link again.
Uplink behind the introducing RN equipment: the uplink of UE sends to RN equipment by UE through up access link earlier under the RN equipment, sends to DeNB by RN equipment through back haul link again.
The method of handling interference problem at present is that RN equipment does not send to terminal when receiving data from the base station, promptly creates ' gaps ' in the transmission time at descending access.Can pass through the mode of MBSFN (MBSFN MulticastBroadcast Single Frequency Network, Multicast Broadcast Single Frequency Network) subframe and create ' gaps '.In these ' gaps ', user terminal (comprising the R8 user terminal) can not expect to exist any RN equipment to send.The MBSFN subframe that is exclusively used in the back haul link downlink data transmission can be carried descending scheduling channel R-PDCCH (the Relay Physical Downlink ControlChannel that DeNB gives RN equipment, the relaying Physical Downlink Control Channel) and descending transmission channel R-PDSCH (Relay PhysicalDownlink Share Channel, relaying Physical Downlink Shared Channel).
DRX (discontinuous reception) refers to discontinuous reception descending scheduling of user terminal and downlink data, and when not needing to receive descending scheduling and data, user terminal can be in dormancy (sleep) state, reaches purpose of power saving.
DRX cycle configuration, each DRX cycle are introduced into an of short duration continuous accepting state when beginning, be called on duration (monitoring the period), and its duration is determined by timer on Duration Timer.The definition of onDurationTimer is: from the continuous descending sub frame number that the DRX cycle starting point begins, terminal need be monitored PDCCH during this period, to check the resource allocation that whether has at this terminal.If terminal receives descending scheduling and downlink data during onDurationTimer, to start other timers and carry out follow-up scheduling process, if but terminal does not receive descending scheduling and downlink data during on duration, will enter resting state, up to next DRX cycle, downlink data receiving again when onDurationTimer starts.The periodicity configuration of DRX is shown in Figure 1B.
User terminal also may start following timer during receiving descending scheduling and downlink transfer, indicating terminal further receives descending scheduling order PDCCH and downlink transfer PDSCH.
Drx-InactivityTimer (the non-Active Timer of DRX): start when receiving the PDCCH that dispatches new data, terminal is monitored PDCCH always between the starting period; End condition is this timer expiry or the MAC layer signaling of receiving forced termination.
HARQ RTT Timer (HARQ Round Trip Time Timer, mixed automatic repeat request timer two-way time): at downlink transfer.Start when receiving the PDCCH of dispatching downlink data, regular length is a retransmission time interval, for example FDD is fixed as 8ms, unless covered by other timers during this period, otherwise need not monitor PDCCH;
Drx-RetransmissionTimer (DRX retransmission timer): at downlink transfer.The overtime back of HARQ RTTTimer starts, and terminal is monitored PDCCH always between the starting period; End condition is this timer expiry or receives the retransfer scheduling of expectation.
According to existing DRX Parameters design, there are a lot of uncertain factors in discontinuous reception timer configuration on the back haul link, can increase the DeNB configuration complexity, increases RN power consumption, even causes data correctly not transmit.
Owing to be between DeNB and the RN in enterprising line data transmission of the descending backhaul subframe of configuration and scheduling, make present configuration mode might cause RN equipment in the timer length of configuration, not have the backhaul subframe to exist, impossible receiving scheduling and downlink transfer at all; If dispose timer length very long, though RN equipment can obtain the chance of receiving scheduling and downlink transfer, but the identical timer length configuration descending backhaul number of sub-frames of the RN equipment experience of different DRX starting points down is different, can increase the power consumption of scheduling complexity and RN equipment.
In sum, if in the LTE-A system, continue to use former timer duration, can increase DeNB configuration complexity and RN electricity consumption of equipment amount, and cause data correctly not transmit.
Summary of the invention
The embodiment of the invention provides a kind of downlink data to receive the mthods, systems and devices of handling, in order to solve exist in the prior art in the LTE-A system, continue to use former timer duration, can increase the problem of DeNB configuration complexity and RN electricity consumption of equipment amount.
A kind of downlink data that the embodiment of the invention provides receives the method for handling, and this method comprises:
Relaying RN equipment receives discontinuous reception timer numerical value;
In the N continuous of described RN equipment after the starting discontinuous reception timer descending back haul link subframe, monitor dispatching command and downlink data receiving;
Wherein, N equals discontinuous reception timer numerical value.
A kind of downlink data that the embodiment of the invention provides receives the method for handling, and this method comprises:
The quantity of the descending back haul link subframe of discontinuous reception timer correspondence is determined in the base station;
The quantity of the described descending back haul link subframe that described base station will be determined is as discontinuous reception timer numerical value, and discontinuous reception timer numerical value sent to relaying RN equipment, indicate in the N continuous of described RN equipment after the starting discontinuous reception timer descending back haul link subframe, monitor dispatching command and downlink data receiving;
Wherein, N equals discontinuous reception timer numerical value.
A kind of downlink data that the embodiment of the invention provides receives the system that handles, and this system comprises:
The base station is used for determining the quantity of the descending back haul link subframe of discontinuous reception timer correspondence, and the quantity of the described descending back haul link subframe determined as discontinuous reception timer numerical value, and is sent described discontinuous reception timer numerical value;
Relaying RN equipment is used for monitoring dispatching command and downlink data receiving in the N continuous descending back haul link subframe after starting discontinuous reception timer;
Wherein, N equals discontinuous reception timer numerical value.
A kind of relaying RN equipment that the embodiment of the invention provides, this RN equipment comprises:
Receiver module is used to receive discontinuous reception timer numerical value;
Processing module is used for monitoring dispatching command and downlink data receiving in the N continuous descending back haul link subframe after starting discontinuous reception timer;
Wherein, N equals discontinuous reception timer numerical value.
A kind of base station that the embodiment of the invention provides, this base station comprises:
Determination module is used for determining the quantity of the descending back haul link subframe of discontinuous reception timer correspondence;
Sending module, the quantity that is used for the described descending back haul link subframe that will determine is as discontinuous reception timer numerical value, and discontinuous reception timer numerical value sent to relaying RN equipment, indicate in the N continuous of described RN equipment after the starting discontinuous reception timer descending back haul link subframe, monitor dispatching command and downlink data receiving;
Wherein, N equals discontinuous reception timer numerical value.
In the N continuous of embodiment of the invention RN equipment after the starting discontinuous reception timer descending back haul link subframe, monitor dispatching command and downlink data receiving; The N discontinuous reception timer numerical value that equals to receive wherein.Owing to according to the quantity of descending backhaul subframe, carry out downlink data and receive processing, thereby can satisfy the requirement of LTE-A system, reduced the complexity and the RN electricity consumption of equipment amount of DeNB configuration.
Description of drawings
Figure 1A is the structural representation of LTE-A system in the background technology;
Figure 1B is a DRX cycle schematic diagram in the background technology;
Fig. 2 receives the system configuration schematic diagram of handling for embodiment of the invention downlink data;
Fig. 3 is the structural representation of embodiment of the invention RN equipment;
Fig. 4 is the structural representation of embodiment of the invention base station;
Fig. 5 is that first kind of downlink data of the embodiment of the invention receives the method flow schematic diagram of handling;
Fig. 6 is that second kind of downlink data of the embodiment of the invention receives the method flow schematic diagram of handling;
Fig. 7 A is the configuration of embodiment of the invention on Duration Timer and starts schematic diagram;
Fig. 7 B is the configuration of embodiment of the invention drx-InactivityTimer and starts schematic diagram;
Fig. 7 C is the configuration of embodiment of the invention HARQ RTT Timer and drx-RetransmissionTimer and starts schematic diagram.
Embodiment
In the N continuous of embodiment of the invention RN equipment after the starting discontinuous reception timer descending back haul link subframe, monitor dispatching command and downlink data receiving; The N discontinuous reception timer numerical value that equals to receive wherein.Owing to according to the quantity of descending backhaul subframe, carry out downlink data and receive processing, thereby can satisfy the requirement of LTE-A system, reduced the complexity and the RN electricity consumption of equipment amount of DeNB configuration.
Wherein, the embodiment of the invention can be applied in the LTE-A system, also can be applied in other systems that contain RN equipment.
The base station of the embodiment of the invention can be a macro base station, evolution base station, Home eNodeB etc.
Below in conjunction with Figure of description the embodiment of the invention is described in further detail.
As shown in Figure 2, the system of embodiment of the invention downlink data reception processing comprises:base station 10 andRN equipment 20.
The discontinuous reception timer of the embodiment of the invention includes but not limited to a kind of in the following timer:
OnDurationTimer, drx-InactivityTimer and drx-RetransmissionTimer.
Describe according to the different timing device below.
Situation one, discontinuous reception timer are onDurationTimer.
Concrete,base station 10 can be according to the business and the transfer of data of user terminal, determine the quantity of the descending back haul link subframe of onDurationTimer correspondence, be the quantity that needs to monitor descending back haul link subframe in each DRX cycle at least, and with the quantity determined as onDurationTimer numerical value, send toRN equipment 20 by configuration order.
It is obvious to arrive the periodicity characteristics such as business, and when data volume was little, configurable less monitoring sub-frame number was as 2; Professional arrival is irregular, in the time of all may arriving in longer a period of time, disposes more monitoring number of sub-frames.
Need to prove, the embodiment of the invention is not limited to the mode of quantity of the descending back haul link subframe of above-mentioned definite onDurationTimer correspondence, and other modes of quantity that can determine the descending back haul link subframe of onDurationTimer correspondence are all used the embodiment of the invention.
Accordingly,RN equipment 20 receives onDurationTimer numerical value, starts onDurationTimer when each DRX cycle begins.The function of onDurationTimer is a counting, and a descending back haul link subframe is promptly arranged, and remembers a number, and adds up, and equals onDurationTimer numerical value up to the numerical value that adds up, and stops counting, enters resting state then, up to next DRX cycle; If receive MAC (the Medium Access Control that forces termination in descending back haul link; The medium access control) order then stops onDurationTimer; If listen to dispatching command or receive downlink data in descending back haul link, start other timers.
Situation two, discontinuous reception timer are drx-InactivityTimer.
Concrete,base station 10 can be according to the business and the transfer of data of user terminal, the quantity of determining the descending back haul link subframe of drx-InactivityTimer correspondence (arrives characteristic continuously such as data, then predictRN equipment 20 receive after the new scheduling how long in have newly to be transferred to and reach, and determine the quantity of descending back haul link subframe) according to the incident of prediction, and with the quantity determined as drx-InactivityTimer numerical value, send toRN equipment 20 by configuration order.
Such as, if business datum always concentrate to arrive, promptly receive a new transmission after, subsequent transmission arrives at once, can dispose short drx-InactivityTimer; If business datum is irregular, receive that promptly a new transmission back all has follow-up data and arrives in longer a period of time, can dispose long drx-InactivityTimer.
Need to prove, the embodiment of the invention is not limited to the mode of quantity of the descending back haul link subframe of above-mentioned definite drx-InactivityTimer correspondence, and other modes of quantity that can determine the descending back haul link subframe of drx-InactivityTimer correspondence are all used the embodiment of the invention.
Accordingly,RN equipment 20 receives drx-InactivityTimer numerical value, after receiving the new data transmission dispatching command, starts drx-InactivityTimer.The function of drx-InactivityTimer is a counting, a descending back haul link subframe is promptly arranged, remember a number, and add up, equal drx-InactivityTimer numerical value up to the numerical value that adds up and stop counting, or before the numerical value that adds up equals drx-InactivityTimer numerical value, receive the MAC layer signaling of forced termination.
Situation three, discontinuous reception timer are drx-RetransmissionTimer.
Concrete,base station 10 can be according to working as preload, determine the quantity of the descending back haul link subframe of drx-RetransmissionTimer correspondence, and with the quantity determined as drx-RetransmissionTimer numerical value, send toRN equipment 20 by configuration order.
Such as, when system loading was light, the base station can be dispatched re-transmission at once, the configurable smaller value of drx-RetransmissionTimer; When system loading was light, the base station may not be dispatched re-transmission at once, the configurable higher value of drx-RetransmissionTimer.
Need to prove, the embodiment of the invention is not limited to the mode of quantity of the descending back haul link subframe of above-mentioned definite drx-RetransmissionTimer correspondence, and other modes of quantity that can determine the descending back haul link subframe of drx-RetransmissionTimer correspondence are all used the embodiment of the invention.
Accordingly,RN equipment 20 receives drx-RetransmissionTimer numerical value, after HARQ RTTTimer is overtime, starts drx-RetransmissionTimer.The function of drx-RetransmissionTimer is a counting, a descending back haul link subframe is promptly arranged, remember a number, and add up, equal drx-RetransmissionTimer numerical value up to the numerical value that adds up and stop counting, or before the numerical value that adds up equals drx-RetransmissionTimer numerical value, receive the data retransmission that needs.
In specific implementation process, RN equipment can start HARQ RTT Timer after receiving downlink data.Preferable, the duration that the length of HARQ RTT Timer equals between the time point of the time point of downlink transfer and feedback adds that the base station receives and handle the duration of feedback.
Such as in the LTE-A system, the duration that the base station received and handled feedback is 4ms, and then the length of HARQ RTTTimer equals the duration+4ms between the time point of the time point of base station down transmission and RN equipment feedback.
In specific implementation process, above-mentioned three timers can all adopt the method counting of the embodiment of the invention, also can there be the part numeration to adopt the method counting of the embodiment of the invention, other timers are counted according to prior art, and specifically which regularly adopts count can to determine as required which kind of mode.
As shown in Figure 3, the RN equipment of the embodiment of the invention comprises:receiver module 200 andprocessing module 210.
If discontinuous reception timer is onDurationTimer,processing module 210 begins to start onDurationTimer from the starting point of each DRX cycle;
If discontinuous reception timer is drx-InactivityTimer,processing module 210 starts drx-InactivityTimer after receiving the new data transmission dispatching command;
If discontinuous reception timer is drx-RetransmissionTimer,processing module 210 starts discontinuous reception retransmission timer drx-RetransmissionTimer in the overtime back of HARQRTT Timer.
Wherein,processing module 210 starts HARQ RTT Timer after receiving downlink data.
Preferable, the duration that the length of HARQ RTT Timer equals between the time point of the time point of downlink transfer and feedback adds that the base station receives and handle the duration of feedback.
As shown in Figure 4, the base station of the embodiment of the invention comprises:determination module 100 and sendingmodule 110.
Sendingmodule 110, the quantity that is used for descending back haul link subframe thatdetermination module 100 is determined is as discontinuous reception timer numerical value, and discontinuous reception timer numerical value sent to RN equipment, in the N continuous of indication RN equipment after the starting discontinuous reception timer descending back haul link subframe, monitor dispatching command and downlink data receiving; Wherein, N equals discontinuous reception timer numerical value.
As shown in Figure 5, the method for first kind of downlink data reception of embodiment of the invention processing comprises the following steps:
Instep 502, the N continuous of RN equipment after the starting discontinuous reception timer descending back haul link subframe, monitor dispatching command and downlink data receiving, wherein N equals discontinuous reception timer numerical value.
Wherein, can further include before the step 501:
The quantity of the descending back haul link subframe of discontinuous reception timer correspondence is determined instep 500, base station, and the quantity of the descending back haul link subframe determined as discontinuous reception timer numerical value, and is sent to relaying RN equipment with discontinuous reception timer numerical value.
The discontinuous reception timer of the embodiment of the invention includes but not limited to a kind of in the following timer:
OnDurationTimer, drx-InactivityTimer and drx-RetransmissionTimer.
Describe according to the different timing device below.
Situation one, discontinuous reception timer are onDurationTimer.
In thestep 502, RN equipment begins to start onDurationTimer from the starting point of each DRX cycle, and in the descending back haul link subframe of the N continuous after starting onDurationTimer, monitors dispatching command and downlink data receiving.
Concrete, in thestep 500, the base station can be according to the business and the transfer of data of user terminal, determine the quantity of the descending back haul link subframe of onDurationTimer correspondence, be the quantity that needs to monitor descending back haul link subframe in each DRX cycle at least, and with the quantity determined as onDurationTimer numerical value, send to RN equipment by configuration order.
It is obvious to arrive the periodicity characteristics such as business, and when data volume was little, configurable less monitoring sub-frame number was as 2; Professional arrival is irregular, in the time of all may arriving in longer a period of time, disposes more monitoring number of sub-frames.
Need to prove, the embodiment of the invention is not limited to the mode of quantity of the descending back haul link subframe of above-mentioned definite onDurationTimer correspondence, and other modes of quantity that can determine the descending back haul link subframe of onDurationTimer correspondence are all used the embodiment of the invention.
Accordingly, in thestep 502, RN equipment starts onDurationTimer when each DRX cycle begins.The function of onDurationTimer is a counting, and a descending back haul link subframe is promptly arranged, and remembers a number, and adds up, and equals onDurationTimer numerical value up to the numerical value that adds up, and stops counting, enters resting state then, up to next DRX cycle; If receive in descending back haul link and force the MAC that ends to order, then stop onDurationTimer; If listen to dispatching command or receive downlink data in descending back haul link, start other timers.
With DRX cycle 20ms, onDurationTimer numerical value equals 2 and is example.Shown in Fig. 7 A, suppose in descending back haul link subframe, not listen to dispatching command, receive downlink data.
Start onDurationTimer inDRX cycle 1 beginning back,record 1 is accumulated as 2 whensubframe 2 whensubframe 1, equals onDurationTimer numerical value, then closes onDurationTimer; Start onDurationTimer inDRX cycle 2 beginning backs,record 1 is accumulated as 2 when subframe 7 when subframe 6, equals onDurationTimer numerical value, then closes onDurationTimer.
Situation two, discontinuous reception timer are drx-InactivityTimer.
In thestep 502, RN equipment starts drx-InactivityTimer after receiving the new data transmission dispatching command, and in the descending back haul link subframe of the N continuous after starting drx-InactivityTimer, monitors dispatching command and downlink data receiving.
Concrete, in thestep 500, the base station can be according to the business and the transfer of data of user terminal, the quantity of determining the descending back haul link subframe of drx-InactivityTimer correspondence (arrives characteristic continuously such as data, then predict RN equipment receive after the new scheduling how long in have newly to be transferred to and reach, and determine the quantity of descending back haul link subframe according to the incident of prediction), and with the quantity determined as drx-InactivityTimer numerical value, send toRN equipment 20 by configuration order.
Such as, if business datum always concentrate to arrive, promptly receive a new transmission after, subsequent transmission arrives at once, can dispose short drx-InactivityTimer; If business datum is irregular, receive that promptly a new transmission back all has follow-up data and arrives in longer a period of time, can dispose long drx-InactivityTimer.
Need to prove, the embodiment of the invention is not limited to the mode of quantity of the descending back haul link subframe of above-mentioned definite drx-InactivityTimer correspondence, and other modes of quantity that can determine the descending back haul link subframe of drx-InactivityTimer correspondence are all used the embodiment of the invention.
Accordingly, in thestep 502, RN equipment receives drx-InactivityTimer numerical value, after receiving the new data transmission dispatching command, starts drx-InactivityTimer.The function of drx-InactivityTimer is a counting, a descending back haul link subframe is promptly arranged, remember a number, and add up, equal drx-InactivityTimer numerical value up to the numerical value that adds up and stop counting, or before the numerical value that adds up equals drx-InactivityTimer numerical value, receive the MAC layer signaling of forced termination.
With DRX cycle 20ms, onDurationTimer numerical value equals 2, and drx-InactivityTimer numerical value equals 2 and is example.Shown in Fig. 7 B, suppose in descending back haul link subframe, to receive new transmitting and scheduling order.
Start onDurationTimer inDRX cycle 1 beginning back,record 1 whensubframe 1, owing insubframe 1, receive new transmitting and scheduling order, then close onDurationTimer, start drx-InactivityTimer,record 1 whensubframe 2 is accumulated as 2 whennext subframe 1, equal drx-InactivityTimer numerical value, then close drx-InactivityTimer.
Situation three, discontinuous reception timer are drx-RetransmissionTimer.
In thestep 502, RN equipment starts drx-RetransmissionTimer in the overtime back of HARQ RTT Timer, and in the descending back haul link subframe of the N continuous after starting drx-RetransmissionTimer, monitors dispatching command and downlink data receiving.
Concrete, in thestep 500, the base station can be according to working as preload, the quantity of determining the descending back haul link subframe of drx-RetransmissionTimer correspondence is (low weight such as the base station load, can guarantee that scheduling retransmits at short notice, then the quantity of the descending back haul link subframe of Que Dinging can be smaller; Base station load is heavier, can not guarantee to dispatch at short notice re-transmission, and then the quantity of the descending back haul link subframe of Que Dinging can be bigger), and with definite quantity as drx-RetransmissionTimer numerical value, send to RN equipment by configuration order.
Such as, when system loading was light, the base station can be dispatched re-transmission at once, the configurable smaller value of drx-RetransmissionTimer; When system loading was light, the base station may not be dispatched re-transmission at once, the configurable higher value of drx-RetransmissionTimer.
Need to prove, the embodiment of the invention is not limited to the mode of quantity of the descending back haul link subframe of above-mentioned definite drx-RetransmissionTimer correspondence, and other modes of quantity that can determine the descending back haul link subframe of drx-RetransmissionTimer correspondence are all used the embodiment of the invention.
Accordingly, in thestep 502, RN equipment receives drx-RetransmissionTimer numerical value, after HARQRTT Timer is overtime, starts drx-RetransmissionTimer.The function of drx-RetransmissionTimer is a counting, a descending back haul link subframe is promptly arranged, remember a number, and add up, equal drx-RetransmissionTimer numerical value up to the numerical value that adds up and stop counting, or before the numerical value that adds up equals drx-RetransmissionTimer numerical value, receive the data retransmission that needs.
In specific implementation process, RN equipment can start HARQ RTT Timer after receiving downlink data.Preferable, the duration that the length of HARQ RTT Timer equals between the time point of the time point of downlink transfer and feedback adds that the base station receives and handle the duration of feedback.
Such as in the LTE-A system, the duration that the base station received and handled feedback is 4ms, and then the length of HARQ RTTTimer equals the duration+4ms between the time point of the time point of base station down transmission and RN equipment feedback.
With DRX cycle 20ms, onDurationTimer numerical value equals 2, and drx-RetransmissionTimer numerical value equals 2 and is example.Shown in Fig. 7 C, suppose when drx-RetransmissionTimer is overtime, not receive that downlink data retransmits.If the NACK feedback is received in the base station in the practical operation, can send downlink data before drx-RetransmissionTimer is overtime retransmits, RN equipment stops drx-RetransmissionTimer when receiving the downlink data re-transmission, start HARQ RTT Timer.
Start onDurationTimer inDRX cycle 1 beginning back,record 1 whensubframe 1 owing to receive downlink data insubframe 1, starts HARQ RTT Timer in subframe 1.After HARQ RTT Timer is overtime, start drx-RetransmissionTimer,record 1 whensubframe 1 is accumulated as 2 whennext subframe 2, equal drx-RetransmissionTimer numerical value, then closes drx-InactivityTimer.
In specific implementation process, above-mentioned three timers can all adopt the method counting of the embodiment of the invention, also can there be the part numeration to adopt the method counting of the embodiment of the invention, other timers are counted according to prior art, and specifically which regularly adopts count can to determine as required which kind of mode.
As shown in Figure 6, the method for second kind of downlink data reception of embodiment of the invention processing comprises the following steps:
The quantity of the descending back haul link subframe of discontinuous reception timer correspondence is determined instep 601, base station.
The quantity of the descending back haul link subframe that step 602, base station will be determined is as discontinuous reception timer numerical value, and discontinuous reception timer numerical value sent to RN equipment, in the N continuous of indication RN equipment after the starting discontinuous reception timer descending back haul link subframe, monitor dispatching command and downlink data receiving; Wherein, N equals discontinuous reception timer numerical value.
Wherein, step is identical with thestep 500 of Fig. 5 withstep 602, does not repeat them here.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative notion of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
From the foregoing description as can be seen: embodiment of the invention RN equipment receives discontinuous reception timer numerical value; In the N continuous of RN equipment after the starting discontinuous reception timer descending back haul link subframe, monitor dispatching command and downlink data receiving; Wherein, N equals discontinuous reception timer numerical value.
Owing to according to the quantity of descending backhaul subframe, carry out downlink data and receive processing, thereby can satisfy the requirement of LTE-A system, reduced the complexity and the RN electricity consumption of equipment amount of DeNB configuration.
Further, if HARQ RTT Timer is still 8ms in the LTE-A system, RN equipment might occur and may also not have the feedback of transmission downlink data, DeNB can not dispatch this RN equipment, can increase the power consumption of RN equipment if RN equipment is waken up too early, and in the DRX retransmission timer, DeNB can't carry out descending scheduling and re-transmission, RN equipment enters resting state on the contrary when really needing re-transmission, causes error of transmission.If the duration that the length of the HARQ RTT Timer of the embodiment of the invention equals between the time point of the time point of downlink transfer and feedback adds that the base station receives and handle the duration of feedback, can also avoid because timer duration is provided with the unreasonable situation that causes data correctly not transmit.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (17)
1. a downlink data receives the method for handling, and it is characterized in that this method comprises:
Relaying RN equipment receives discontinuous reception timer numerical value;
In the N continuous of described RN equipment after the starting discontinuous reception timer descending back haul link subframe, monitor dispatching command and downlink data receiving;
Wherein, N equals discontinuous reception timer numerical value.
2. the method for claim 1 is characterized in that, described discontinuous reception timer is to monitor period timer onDurationTimer;
The discontinuous reception timer of described RN device start comprises:
Described RN equipment begins to start onDurationTimer from the starting point of each DRX cycle.
3. the method for claim 1 is characterized in that, described discontinuous reception timer is the non-Active Timer drx-InactivityTimer of discontinuous reception;
The discontinuous reception timer of described RN device start comprises:
Described RN equipment starts drx-InactivityTimer after receiving the new data transmission dispatching command.
4. as the arbitrary described method of claim 1～3, it is characterized in that described discontinuous reception timer is discontinuous reception retransmission timer drx-RetransmissionTimer;
The discontinuous reception timer of described RN device start comprises:
Described RN equipment starts drx-RetransmissionTimer in the overtime back of mixed automatic repeat request timer two-way time HARQ RTT Timer.
5. method as claimed in claim 4 is characterized in that, described RN equipment is determined after the discontinuous reception length of timer, starts drx-RetransmissionTimer and also comprises before:
Described RN equipment starts HARQ RTT Timer after receiving downlink data;
Wherein, the duration that equals between the time point of the time point of downlink transfer and feedback of the length of HARQ RTT Timer adds that the base station receives and handle the duration of feedback.
6. a downlink data receives the method for handling, and it is characterized in that this method comprises:
The quantity of the descending back haul link subframe of discontinuous reception timer correspondence is determined in the base station;
The quantity of the described descending back haul link subframe that described base station will be determined is as discontinuous reception timer numerical value, and discontinuous reception timer numerical value sent to relaying RN equipment, indicate in the N continuous of described RN equipment after the starting discontinuous reception timer descending back haul link subframe, monitor dispatching command and downlink data receiving;
Wherein, N equals discontinuous reception timer numerical value.
7. a downlink data receives the system that handles, and it is characterized in that this system comprises:
The base station is used for determining the quantity of the descending back haul link subframe of discontinuous reception timer correspondence, and the quantity of the described descending back haul link subframe determined as discontinuous reception timer numerical value, and is sent described discontinuous reception timer numerical value;
Relaying RN equipment is used for monitoring dispatching command and downlink data receiving in the N continuous descending back haul link subframe after starting discontinuous reception timer;
Wherein, N equals discontinuous reception timer numerical value.
8. system as claimed in claim 7 is characterized in that, described RN equipment specifically is used for:
Begin to start monitoring period timer onDurationTimer from the starting point of each DRX cycle.
9. system as claimed in claim 7 is characterized in that, described RN equipment specifically is used for:
Described RN equipment starts the non-Active Timer drx-InactivityTimer of discontinuous reception after receiving the new data transmission dispatching command.
10. as the arbitrary described system of claim 7～9, it is characterized in that described RN equipment specifically is used for:
Described RN equipment starts discontinuous reception retransmission timer drx-RetransmissionTimer in the overtime back of mixed automatic repeat request timer two-way time HARQ RTT Timer.
11. system as claimed in claim 10 is characterized in that, described RN equipment also is used for:
After receiving downlink data, start HARQ RTT Timer;
Wherein, the duration that equals between the time point of the time point of downlink transfer and feedback of the length of HARQ RTT Timer adds that the base station receives and handle the duration of feedback.
12. a relaying RN equipment is characterized in that, this RN equipment comprises:
Receiver module is used to receive discontinuous reception timer numerical value;
Processing module is used for monitoring dispatching command and downlink data receiving in the N continuous descending back haul link subframe after starting discontinuous reception timer;
Wherein, N equals discontinuous reception timer numerical value.
13. RN equipment as claimed in claim 12 is characterized in that, described processing module specifically is used for:
Begin to start monitoring period timer onDurationTimer from the starting point of each DRX cycle.
14. RN equipment as claimed in claim 12 is characterized in that, described processing module specifically is used for:
After receiving the new data transmission dispatching command, start the non-Active Timer drx-InactivityTimer of discontinuous reception.
15., it is characterized in that described processing module specifically is used for as the arbitrary described RN equipment of claim 12～14:
Start discontinuous reception retransmission timer drx-RetransmissionTimer in the overtime back of mixed automatic repeat request timer two-way time HARQ RTT Timer.
16. RN equipment as claimed in claim 15 is characterized in that, described processing module also is used for:
After receiving downlink data, start HARQ RTT Timer;
Wherein, the duration that equals between the time point of the time point of downlink transfer and feedback of the length of HARQ RTT Timer adds that the base station receives and handle the duration of feedback.
17. a base station is characterized in that, this base station comprises:
Determination module is used for determining the quantity of the descending back haul link subframe of discontinuous reception timer correspondence;
Sending module, the quantity that is used for the described descending back haul link subframe that will determine is as discontinuous reception timer numerical value, and discontinuous reception timer numerical value sent to relaying RN equipment, indicate in the N continuous of described RN equipment after the starting discontinuous reception timer descending back haul link subframe, monitor dispatching command and downlink data receiving;
Wherein, N equals discontinuous reception timer numerical value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101630293ACN102082626B (en) | 2010-04-29 | 2010-04-29 | Method, system and device for receiving process of downlink data |
| PCT/CN2011/073357WO2011134396A1 (en) | 2010-04-29 | 2011-04-27 | Method, system and device for processing downlink data reception |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101630293ACN102082626B (en) | 2010-04-29 | 2010-04-29 | Method, system and device for receiving process of downlink data |
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| Publication Number | Publication Date |
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| CN102082626Atrue CN102082626A (en) | 2011-06-01 |
| CN102082626B CN102082626B (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101630293AActiveCN102082626B (en) | 2010-04-29 | 2010-04-29 | Method, system and device for receiving process of downlink data |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102082626B (en) |
| WO (1) | WO2011134396A1 (en) |
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Also Published As
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| CN102082626B (en) | 2013-08-14 |
| WO2011134396A1 (en) | 2011-11-03 |
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