CN104284348A - Dynamic TDD configuration acquisition method, base station and terminal - Google Patents
Dynamic TDD configuration acquisition method, base station and terminal Download PDFInfo
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- CN104284348A CN104284348A CN201310293749.5A CN201310293749A CN104284348A CN 104284348 A CN104284348 A CN 104284348A CN 201310293749 A CN201310293749 A CN 201310293749A CN 104284348 A CN104284348 A CN 104284348A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
Abstract
The invention discloses a dynamic TDD configuration acquisition method, a base station and a terminal and relates to the communication technology. Whether the terminal is activated or not, corresponding messages are monitored at the moment when the base station sends TDD configuration before the terminal needs to transmit uplink or downlink data, and the TDD configuration sent by the base station is acquired; or when the DRX period of the terminal is configured by the base station, configuration is performed according to the time moment when the TDD configuration is sent and the period in which the TDD configuration is sent so that the activated terminal can acquire all the TDD configuration sent by the base station, and therefore it can be guaranteed that UE can acquire the TDD uplink and downlink configuration change information of a cell in time.
Description
Technical field
The present invention relates to the communication technology, particularly relate to a kind of acquisition methods of dynamic TDD configuration, base station and terminal.
Background technology
Along with technical development, increasing Microcell (Pico cell), the low power base station such as Home eNodeB (Home NodeB) are used to the deployment of little coverage, in this kind of community, number of users possibility is less and customer service changes in demand is larger, therefore TDD(Time division duplex, time division duplex) there is the demand of dynamic change in the up-downgoing business proportion of community.Although also support in current TD-LTE standard to change the uplink and downlink timeslot ratio of community, change granularity be cell level and the cycle longer, real-time business situation of change dynamic conditioning TDD uplink/downlink configuration can not be followed the tracks of.Based on this, 3GPP(3rd Generation Partnership Project, 3G (Third Generation) Moblie standardization body) standard introduces scheme by the configuration of physical layer signaling instruction dynamic conditioning TDD uplink/downlink.For supporting dynamic TDD configuration variation and opening the UE of this function, when being configured with DRX(Discontinuous Reception, discontinuous reception) function time, need know current TDD uplink-downlink configuration when entering activationary time in time and start working.
1) LTE(Long Term Evolution, Long Term Evolution) TDD system frame structure
As shown in Figure 1, a radio frames length is 10ms to LTE TDD system frame structure, and comprise special subframe and conventional subframe two class totally 10 subframes, each subframe is 1ms.Special subframe is divided into 3 time slots: DwPTS(Downlink Pilot Slot, descending pilot frequency time slot), GP (Guard Period, protection interval) and UpPTS(Uplink Pilot Slot, uplink pilot time slot).Conventional subframe is divided into again sub-frame of uplink and descending sub frame, is respectively used to transmit uplink/downlink control signal and business datum etc.
2) LTE TDD UL/DL configures
LTE TDD system defines altogether following 7 kinds of TDD UL/DL(uplink/downlinks) configuration, as shown in table 1.It is as follows that these 7 kinds of TDD UL/DL configure common feature: in a radio frames, can configure two special subframes (subframe #1 and #6), also only can configure a special subframe (subframe #1); DwPTS time slot in subframe #0 and subframe #5 and special subframe is always used as downlink transfer; UpPTS time slot in subframe #2 and special subframe is always for uplink; Other subframes can be configured to be used as uplink or downlink transfer according to needs.
Table 1LTE TDD UL/DL sub-frame configuration
3) TDD UL/DL configuration change
In LTE R8, TDD UL/DL configuration change adopts system information renewal process to realize, TDD UL/DL configuration packet is contained in SIB1(system information block1, system information block 1) in, when TDD UL/DL configuration change, network first can at current BCCH(broadcast control channel, Broadcast Control Channel) change by the terminal in this community of page notification in the cycle, then terminal is configured by the TDD UL/DL after reading SIB1 acquisition change within the next BCCH change cycle.If there is TDD UL/DL configuration change, within a period of time, base station and terminal may be inconsistent to the understanding that current TDD UL/DL configures.But LTE R8 version it is generally acknowledged that TDD UL/DL configuration can not be changed substantially, even if change also is change once for some days, although what therefore TDD UL/DL configuration change can cause base station and terminal to be understood is inconsistent, but it is quite low owing to changing frequency, therefore its impact is negligible, does not specify in standard.
LTE R11eIMTA(Enhancement to LTE TDD for DL-UL Interference Management and Traffic Adapation, LTE TDD UL/DL interference management and service adaptation strengthen) project introduces comparatively dynamic TDD UL/DL configuration change mechanism, namely by the configuration of TDD UL/DL in the mode notifying cell of physical layer signaling PDCCH.Concrete mode is:
L1eIMTA command(layer 1 interference management and service adaptation strengthen order) send in the set time, the public search space being such as fixed on the subframe 0 of each radio frames sends;
The transmission of L1eIMTA command can be periodically send (namely TDD configuration is not changed and sent yet), and such as, the subframe 0 of each radio frames sends; Also can be only just send when TDD configuration change;
UE knows by monitoring the information of carrying in the PDCCH of the eIMTA-RNTI of this subframe the TDD uplink-downlink configuration being about to upgrade;
The TDD uplink-downlink configuration upgraded comes into force, and also can delay a fixing timing and come into force (such as next radio frames comes into force).
4) DRX mechanism
In order to save the energy ezpenditure of UE, extend the service time of UE battery, LTE introduces DRX mechanism.DRX mechanism is by the RRC_CONNECTED(RRC connection status of UE) state is divided into the two kinds of different states that activate and mourn in silence.When being in state of activation, UE needs to monitor continuously and blind Detecting physical layer descending control channel (PDCCH, Physical Downlink Control Channel), subscriber equipment (UE simultaneously, User Equipment, also referred to as terminal in the embodiment of the present invention) can the information such as CQI/PMI/RI be reported.When being in silent status, UE does not need to monitor PDCCH control channel, does not report the information such as CQI/PMI/RI yet, thus reaches the object of saving power for terminal.Two states divides based on DRX cycle in time, as shown in Figure 2.
In fig. 2, a DRX cycle is made up of " on " state duration and " off " state duration.During " on " state, UE is in state of activation, needs to monitor PDCCH channel continuously; During " off " state, UE is in silent status usually, but may be in non-silence state based on the state of other timer temporarily.
DRX associated timer
OnDurationTimer:UE periodically wakes up time of monitoring control channel, as shown in Figure 2.This timer length is configured by RRC, with PDCCH(physical downlink control channel, downlink physical control channel) subframe is unit (psf), the minimum psf1 of value, maximum psf200.Namely so-called PDCCH subframe refers to the descending subframe having PDCCH control channel.
DrxShortCycleTimer: the feature arrived to better coordinate data service, LTE system allows two kinds of DRX cycle(cycles of configuration): long cycle(long period) and the short cycle(short period).The onDurationTimer of two kinds of cycle is identical, but the time of sleep is different.In short cycle, sleep(dormancy) time is relatively shorter, and UE can monitoring control channel again quickly.Long cycle must configure, and is the initial condition of DRX process; Short cycle is optional.DrxShortCycleTimer is provided with the time adopting short cycle to continue, and after DrxShortCycleTimer time-out, UE will use Long cycle.DrxShortCycleTimer is configured by RRC, and long measure is the number of short cycle, and span is 1 to 16.
Drx-InactivatityTimer: after being configured with DRX, when UE opens this timer when (Active Time) receives the control signal of HARQ initial transmission within the time allowing monitoring control channel, before this timer expiry, the continuous monitoring control channel of UE.If before Drx-InactivatityTimer time-out, UE receives the control signal of HARQ initial transmission, and termination is restarted Drx-InactivatityTimer.This timer length is configured by RRC, with PDCCH(physical downlink control channel, downlink physical control channel) subframe is unit (psf), value is minimum is psf1, is spare1(sky to the maximum, i.e. reserved undefined field);
HARQ RTT Timer: be only applicable to DL, make UE likely next time retransmit arrive before not monitoring control channel, reach better power savings.If UE have received the control signal of HARQ transmission (initial transmission or re-transmission), this timer will be opened.If the data in corresponding HARQ instance process are decoded after a front HARQ transmission unsuccessful (UE feeds back NACK), at HARQ RTT Timer(Hybrid ARQ Round trip Time, mixed automatic retransfer round-trip delay timer) after time-out, UE opens Drx-RetransmissionTimer.If the data in corresponding HARQ instance process are successfully decoded (UE feeding back ACK) after a front HARQ transmission, after HARQ RTT Timer timer expiry, UE does not start Drx-RetransmissionTimer.If only have HARQ RTT Timer to run current, UE is monitoring control channel not.
Drx-RetransmissionTimer: be only applicable to DL.At Drx-RetransmissionTimer therebetween, UE monitors control signal, waits for the retransfer scheduling of corresponding HARQ instance process.This timer length is configured by RRC, in units of PDCCH subframe (psf), and the minimum psf1 of value, maximum psf33;
Visible, the above-mentioned DRX length of onDurationTimer, drx-InactivityTimer and drx-RetransmissionTimer in timer of being correlated with is added up based on PDCCH number of sub-frames.For TDD, PDCCH subframe refers to descending sub frame, comprises the DwPTS(Downlink Pilot Time Slot in special subframe, descending pilot frequency time slot).
In current LTE system, UE monitors SPS-C-RNTI(Semi-persistent scheduling Cell Radio Network Temporary Identifier in the active time that DRX mechanism controls, semi-continuous scheduling Cell Radio Network Temporary Identifier/Identity, Cell-RNTI), C-RNTI and TPC-PUSCH-RNTI(identification used for the power control of PUSCH, PUSCH power control identifies) PDCCH that carries, in addition, the UE specified in agreement needs the position of monitoring system information broadcasting or paging, UE also needs to monitor corresponding paging and broadcast message.
Under the mode sending TDD uplink-downlink configuration at fixed time by L1eIMTA command, UE can distribute according to network side after starting eIMTA function or predefined eIMTA RNTI carries out the monitoring of L1TDD configuration signal.After DRX UE enters non active time, according to Current demands, in UE Hai Huihe community, other UE are the same, needing the occasions listen paging of listening broadcast or paging or the broadcast requirement of all UE (in this Shi Dui community).
But, if time L1eIMTA command sends, UE is by chance in non active time, and this just exists the problem that UE cannot receive community TDD uplink-downlink configuration modification information, has influence on follow-up UE and enters when active time works the incorrect problem of current system TDD configuration understanding.
Summary of the invention
The acquisition methods that the embodiment of the present invention provides a kind of dynamic TDD to configure, base station and terminal, to ensure that UE can obtain community TDD uplink-downlink configuration modification information in time.
The acquisition methods of a kind of dynamic TDD configuration that the embodiment of the present invention provides, comprising:
Terminal determines that base station sends moment and the cycle of TDD configuration;
Before terminal determines to need to carry out upstream or downstream transfer of data, send the message that the occasions listen of TDD configuration is corresponding in base station, obtain the TDD configuration that base station sends.
Because terminal is before needs carry out upstream or downstream transfer of data, the corresponding message of timely monitoring, and then the TDD configuration that base station sends can be obtained in time, thus avoid follow-up UE and enter to configure current system TDD when active time works and understand incorrect situation and occur.
Further, in a kind of embodiment that the embodiment of the present invention provides, before described terminal determines to need to carry out upstream or downstream transfer of data, send the message that the occasions listen of TDD configuration is corresponding in base station, obtain the TDD configuration that base station sends, specifically comprise:
Terminal sends moment and the cycle of TDD configuration according to base station, when base station may send TDD configuration in each cycle, all monitors corresponding message, obtains the TDD configuration that base station sends.
Now, due to terminal base station in each cycle may send TDD configuration when, all monitor corresponding message, so be applicable to base station when TDD configuration change, just carry out the situation of the transmission of TDD configuration.
Further, if terminal is waken up in silent status monitor corresponding message, obtain the TDD configuration that base station sends, so terminal also can monitor other message simultaneously, thus improves communication efficiency, and now, the method also comprises:
Terminal sends moment and the cycle of TDD configuration according to base station, when base station may send TDD configuration in each cycle, monitors specific schedule signaling.
In order to reduce the number of times that terminal is waken up from silent status as far as possible, terminal can after determining the position needing to carry out upstream or downstream transfer of data, in the end one can ensure this position have correct TDD configure base station send TDD configuration moment monitor, obtain the TDD configuration that base station sends, now, before described terminal determines to need to carry out upstream or downstream transfer of data, send the message that the occasions listen of TDD configuration is corresponding in base station, obtain the TDD configuration that base station sends, specifically comprise:
Terminal determines the position needing to carry out upstream or downstream transfer of data;
Before terminal determines the position needing to carry out upstream or downstream transfer of data, last can ensure that this position has the moment of the base station transmission TDD configuration that correct TDD configures;
The message that the occasions listen that terminal configures at the base station transmission TDD determined is corresponding, obtains the TDD configuration that base station sends.
In order to ensure that terminal can listen to corresponding message when monitoring, described terminal also comprises before determining the position needing to carry out upstream or downstream transfer of data:
Terminal determines that base station all sends TDD configuration in each cycle.
Concrete, described terminal determines the position needing to carry out upstream or downstream transfer of data, specifically comprises:
Terminal enters the moment of activationary time according to the timer prediction of terminal monitoring control channel; And/or
Terminal enters the moment of activationary time according to the requirement forecasting of upstream or downstream transfer of data.
Wherein, described terminal enters the moment of activationary time according to the requirement forecasting of upstream or downstream transfer of data, comprises one of following or combination:
Terminal predicts according to possible descending retransmission time the moment entering activationary time;
Terminal according to D-SR configuration prediction because transmitting uplink data enters moment of activationary time;
Terminal needs the moment of triggering RA-SR to predict the moment entering activationary time according to there being transmitting uplink data;
Terminal predicts according to the possible uplink retransmission moment moment entering activationary time.
The embodiment of the present invention also provides a kind of acquisition methods of dynamic TDD configuration, comprising:
The moment that TDD configuration sends and cycle are determined in base station;
The long DRX cycle of terminal is configured to the cycle that TDD configuration sends by base station, and is configured to the state of activation position in each long DRX cycle of terminal comprise the position that TDD configures delivery time, makes terminal can obtain dynamic TDD in state of activation and configures.
Base station is when the DRX cycle of configurating terminal, just be configured according to the moment and cycle that send TDD configuration, make terminal can get the TDD configuration of all base stations transmission in state of activation, and then ensure that UE can obtain community TDD uplink-downlink configuration modification information in time.
The embodiment of the present invention is corresponding provides a kind of terminal, comprising:
Determining unit, for determining that base station sends moment and the cycle of TDD configuration;
Acquiring unit, before determining to need to carry out upstream or downstream transfer of data, sends the message that the occasions listen of TDD configuration is corresponding in base station, obtain the TDD configuration that base station sends.
Because the acquiring unit of terminal is before needs carry out upstream or downstream transfer of data, the corresponding message of timely monitoring, and then the TDD configuration that base station sends can be obtained in time, thus avoid follow-up UE and enter to configure current system TDD when active time works and understand incorrect situation and occur.
Further, in a kind of embodiment that the embodiment of the present invention provides, described acquiring unit specifically for:
Send moment and the cycle of TDD configuration according to base station, when base station may send TDD configuration in each cycle, all monitor corresponding message, obtain the TDD configuration that base station sends.
Now, due to acquiring unit base station in each cycle may send TDD configuration when, all monitor corresponding message, so be applicable to base station when TDD configuration change, just carry out the situation of the transmission of TDD configuration.
Further, if terminal is waken up in silent status monitor corresponding message, obtain the TDD configuration that base station sends, so terminal also can monitor other message simultaneously, thus improves communication efficiency, now, described acquiring unit also for:
Send moment and the cycle of TDD configuration according to base station, when base station may send TDD configuration in each cycle, monitor specific schedule signaling.
In order to reduce the number of times that terminal is waken up from silent status as far as possible, terminal can after determining the position needing to carry out upstream or downstream transfer of data, in the end one can ensure this position have correct TDD configure base station send TDD configuration moment monitor, obtain the TDD configuration that base station sends, now, described acquiring unit specifically for:
Determine the position needing to carry out upstream or downstream transfer of data;
Before determining the position needing to carry out upstream or downstream transfer of data, last can ensure that this position has the moment of the base station transmission TDD configuration that correct TDD configures;
Send the message that the occasions listen of TDD configuration is corresponding in the base station determined, obtain the TDD configuration that base station sends.
In order to ensure that terminal can listen to corresponding message when monitoring, described acquiring unit also for:
Before determining the position needing to carry out upstream or downstream transfer of data, determine that base station all sends TDD configuration in each cycle.
Concrete, described acquiring unit determines the position needing to carry out upstream or downstream transfer of data, specifically comprises:
The moment of activationary time is entered according to the timer prediction of terminal monitoring control channel; And/or
The moment of activationary time is entered according to the requirement forecasting of upstream or downstream transfer of data.
More specifically, described acquiring unit enters the moment of activationary time according to the requirement forecasting of upstream or downstream transfer of data, comprises one of following or combination:
The moment entering activationary time is predicted according to possible descending retransmission time;
According to D-SR configuration prediction because transmitting uplink data enters moment of activationary time;
Need the moment prediction triggering RA-SR to enter the moment of activationary time according to there being transmitting uplink data;
The moment entering activationary time is predicted according to the possible uplink retransmission moment.
The embodiment of the present invention is also corresponding provides a kind of base station, comprising:
Send determining unit, for determining the moment that TDD configuration sends and cycle;
Dispensing unit, for the long DRX cycle of terminal being configured to the cycle that TDD configuration sends, and the state of activation position in each long DRX cycle of terminal is configured to comprise the position that TDD configures delivery time, make terminal can obtain dynamic TDD in state of activation and configure.
The dispensing unit of this base station is when the DRX cycle of configurating terminal, just be configured according to the moment and cycle that send TDD configuration, make terminal can get the TDD configuration of all base stations transmission in state of activation, and then ensure that UE can obtain community TDD uplink-downlink configuration modification information in time.
The embodiment of the present invention provides a kind of acquisition methods of dynamic TDD configuration, base station and terminal, no matter whether terminal is in state of activation, terminal is before needs carry out upstream or downstream transfer of data, the moment sending TDD configuration in base station all monitors corresponding message, obtain the TDD configuration that base station sends, or base station is when the DRX cycle of configurating terminal, just be configured according to the moment and cycle that send TDD configuration, make terminal can get the TDD configuration of all base stations transmission in state of activation, and then ensure that UE can obtain community TDD uplink-downlink configuration modification information in time.
Accompanying drawing explanation
Fig. 1 is TD-LTE system frame structure schematic diagram in prior art;
Fig. 2 is DRX cycle schematic diagram in prior art;
One of acquisition methods flow chart of the dynamic TDD configuration that Fig. 3 provides for the embodiment of the present invention;
The UE of the corresponding embodiment one that Fig. 4 provides for the embodiment of the present invention obtains the schematic diagram of TDD configuration;
The UE of the corresponding embodiment two that Fig. 5 provides for the embodiment of the present invention obtains the schematic diagram of TDD configuration;
The UE of the corresponding embodiment three that Fig. 6 provides for the embodiment of the present invention obtains the schematic diagram of TDD configuration;
The UE of the corresponding embodiment four that Fig. 7 provides for the embodiment of the present invention obtains the schematic diagram of TDD configuration;
The UE of the corresponding embodiment five that Fig. 8 provides for the embodiment of the present invention obtains the schematic diagram of TDD configuration;
The UE of the corresponding embodiment six that Fig. 9 provides for the embodiment of the present invention obtains the schematic diagram of TDD configuration;
The UE of the corresponding embodiment seven that Figure 10 provides for the embodiment of the present invention obtains the schematic diagram of TDD configuration;
The UE of the corresponding embodiment eight that Figure 11 provides for the embodiment of the present invention obtains the schematic diagram of TDD configuration;
The acquisition methods flow chart two of the dynamic TDD configuration that Figure 12 provides for the embodiment of the present invention;
The UE of the corresponding embodiment ten that Figure 13 provides for the embodiment of the present invention obtains the schematic diagram of TDD configuration;
The terminal schematic diagram that Figure 14 provides for the embodiment of the present invention;
The base station schematic diagram that Figure 15 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of acquisition methods of dynamic TDD configuration, base station and terminal, no matter whether terminal is in state of activation, terminal is before needs carry out upstream or downstream transfer of data, the moment sending TDD configuration in base station all monitors corresponding message, obtain the TDD configuration that base station sends, or base station is when the DRX cycle of configurating terminal, just be configured according to the moment and cycle that send TDD configuration, make terminal can get the TDD configuration of all base stations transmission in state of activation, and then ensure that UE can obtain community TDD uplink-downlink configuration modification information in time.
As shown in Figure 3, the acquisition methods of the dynamic TDD configuration that the embodiment of the present invention provides, comprising:
Step S301, terminal determine that base station sends moment and the cycle of TDD configuration;
Before step S302, terminal determine to need to carry out upstream or downstream transfer of data, send the message that the occasions listen of TDD configuration is corresponding in base station, obtain the TDD configuration that base station sends.
Because terminal is before needs carry out upstream or downstream transfer of data, the corresponding message of timely monitoring, and then the TDD configuration that base station sends can be obtained in time, thus avoid follow-up UE and enter to configure current system TDD when active time works and understand incorrect situation and occur.
Wherein, moment and the cycle of base station transmission TDD configuration can be made an appointment by agreement, also can be that base station informs terminal by public or dedicated signaling.
In the embodiment of the present invention, base station can be base transceiver station (BTS), Node B (Node B), the Node B (eNode B or eNB) of evolution, Home eNodeB (Home Node B or HNB), the Home eNodeB (Home eNode B or HeNB) of evolution, via node (Relay Node or RN), WAP (wireless access point) (AP), wireless router and similar device etc.User terminal can be mobile phone, panel computer, notebook computer, data card, net book, intelligent watch, WiMAX focus router (MiFi), and has the product such as digital camera, intelligent electric meter, household electrical appliance of radio communication function.User terminal can adopt one or more wireless access technologys to carry out radio communication from different base stations.
Further, if base station is when TDD configuration change, the transmission of TDD configuration is just carried out, so in step S302, before terminal determines to need to carry out upstream or downstream transfer of data, send the message that the occasions listen of TDD configuration is corresponding in base station, obtain the TDD configuration that base station sends, specifically comprise:
Terminal sends moment and the cycle of TDD configuration according to base station, when base station may send TDD configuration in each cycle, all monitors corresponding message, obtains the TDD configuration that base station sends.
If terminal is waken up in silent status monitor corresponding message, obtain the TDD configuration that base station sends, so terminal also can monitor other message simultaneously, thus improves communication efficiency, and now, the method also comprises:
Terminal sends moment and the cycle of TDD configuration according to base station, when base station may send TDD configuration in each cycle, monitors specific schedule signaling.
In order to reduce the number of times that terminal is waken up from silent status as far as possible, terminal can after determining the position needing to carry out upstream or downstream transfer of data, in the end one can ensure this position have correct TDD configure base station send TDD configuration moment monitor, obtain the TDD configuration that base station sends, now, in step S302, before terminal determines to need to carry out upstream or downstream transfer of data, the message that the occasions listen of TDD configuration is corresponding is sent in base station, obtain the TDD configuration that base station sends, specifically comprise:
Terminal determines the position needing to carry out upstream or downstream transfer of data;
Before terminal determines the position needing to carry out upstream or downstream transfer of data, last can ensure that this position has the moment of the base station transmission TDD configuration that correct TDD configures;
The message that the occasions listen that terminal configures at the base station transmission TDD determined is corresponding, obtains the TDD configuration that base station sends.
In order to ensure that terminal can listen to corresponding message when monitoring, terminal also comprises before determining the position needing to carry out upstream or downstream transfer of data:
Terminal determines that base station all sends TDD configuration in each cycle.
Concrete, terminal determines the position needing to carry out upstream or downstream transfer of data, specifically comprises:
Terminal enters the moment of activationary time according to the timer prediction of terminal monitoring control channel; And/or
Terminal enters the moment of activationary time according to the requirement forecasting of upstream or downstream transfer of data.
Terminal enters the moment of activationary time according to the requirement forecasting of upstream or downstream transfer of data, comprises one of following or combination:
Terminal predicts according to possible descending retransmission time the moment entering activationary time;
Terminal according to D-SR(dedicated scheduling Request, specific schedule request) configuration prediction enters moment of activationary time due to transmitting uplink data;
Terminal triggers RA-SR(random access scheduling request, Stochastic accessing dispatch request according to there being transmitting uplink data to need) moment prediction enter moment of activationary time;
Terminal predicts according to the possible uplink retransmission moment moment entering activationary time.
In the embodiment of the present invention, the message of the correspondence of terminal monitoring can be L1eIMTA command message, also can time carry TDD configuration other message.
Be described in detail below by the acquisition methods of specific embodiment to above-mentioned dynamic TDD configuration:
Embodiment one,
Suppose that predefined L1eIMTA command delivery time is the subframe 0 of each radio frames, the moment that terminal may send at each L1eIMTA command all monitors.
Support the ability information of eIMTA based on UE, base station configures the eIMTA function of enable UE side in advance by RRC; The DRX of UE is configured to: long DRX cycle is the start offset that 30ms, onduration are configured to 1, longDRX-CycleStartOffset(long dispatching cycle) be configured to 0;
When UE does not have up-downgoing transfer of data time, only monitor network side scheduling in the onduration stage of long DRX cycle, namely active time is exactly moment corresponding to onduration, i.e. the part of Fig. 4 bend mark.In addition, UE can wake up in the subframe 0 of each radio frames and monitor L1eIMTA command message, and the part that namely in Fig. 4, horizontal line marks, in this part subframe, UE only monitors L1eIMTA command order, does not monitor specific schedule signaling.
Embodiment two,
The concrete setting of this embodiment is identical with embodiment one, but as shown in Figure 5, UE, while the subframe 0 of each radio frames wakes up monitoring L1eIMTA command message, also monitors specific schedule signaling.
Embodiment three,
Suppose that predefined L1eIMTA command delivery time is the subframe 0 of each radio frames, no matter and TDD configuration whether change, base station can send L1eIMTA command in each radio frames, and terminal obtain TDD configuration after, namely come into force at current wireless frame.
Terminal, after determining the moment needing to carry out upstream or downstream transfer of data, monitors L1eIMTA command as required.
Concrete, support the ability information of eIMTA based on UE, base station configures the eIMTA function of enable UE side in advance by RRC; The DRX of UE is configured to: long DRX cycle is that 30ms, onduration are configured to 1, longDRX-CycleStartOffset and are configured to 0;
As shown in Figure 6, when UE does not have up-downgoing transfer of data time, the next one of UE estimates that the active time moment is SFN#4(radio frames 4) SF#0(subframe 0), owing to overlapping with eIMTA order delivery time, therefore UE monitors without the need to the SF#0 at SFN#2 and SFN#3, during onduration, only monitor the TDD configuration that L1eIMTA command can know current SFN.
Embodiment four,
Suppose that predefined L1eIMTA command delivery time is the subframe 0 of each radio frames, no matter and TDD configuration whether change, base station can send L1eIMTA command in each radio frames, and terminal obtain TDD configuration after, namely come into force at current wireless frame.
Terminal, after determining the moment needing to carry out upstream or downstream transfer of data, monitors L1eIMTA command as required.
Concrete, support the ability information of eIMTA based on UE, base station configures the eIMTA function of enableUE side in advance by RRC; The DRX of UE is configured to: long DRX cycle is that 30ms, onduration are configured to 1, longDRX-CycleStartOffset to be configured in subframe 4 be original position;
As shown in Figure 7, when UE does not have up-downgoing transfer of data time, the next one of UE estimates that the active time moment is the SF#4 of SFN#4, and therefore UE monitors without the need to the SF#0 at SFN#2 and SFN#3, need to monitor L1eIMTA command at the SF#0 of SFN#4, thus know the TDD configuration of SFN#4.
Embodiment five,
Suppose that predefined L1eIMTA command delivery time is the subframe 0 of each radio frames, no matter and TDD configuration whether change, base station can send L1eIMTA command in each radio frames, and terminal obtain TDD configuration after, come into force in next radio frames.
Terminal, after determining the moment needing to carry out upstream or downstream transfer of data, monitors L1eIMTA command as required.
Concrete, support the ability information of eIMTA based on UE, base station configures the eIMTA function of enable UE side in advance by RRC; The DRX of UE is configured to: long DRX cycle is that 30ms, onduration are configured to 1, longDRX-CycleStartOffset to be configured in subframe 0 be original position;
As shown in Figure 8, when UE does not have up-downgoing transfer of data time, the next one of UE estimates that the active time moment is the SF#0 of SFN#4, therefore UE monitors without the need to the SF#0 at SFN#2, but come into force in next radio frames after obtaining TDD configuration, so in order to ensure the TDD configuration knowing SFN#4, needing to monitor L1eIMTA command at the SF#0 of SFN#3, thus obtaining the TDD configuration of SFN#4.
Embodiment six,
Suppose that predefined L1eIMTA command delivery time is the subframe 0 of each radio frames, no matter and TDD configuration whether change, base station can send L1eIMTA command in each radio frames, and terminal obtain TDD configuration after, namely come into force at current wireless frame.
Terminal, after determining the moment needing to carry out upstream or downstream transfer of data, monitors L1eIMTA command as required.
Concrete, support the ability information of eIMTA based on UE, base station configures the eIMTA function of enable UE side in advance by RRC;
As shown in Figure 9, UE predicts according to possible descending retransmission time the moment entering activationary time, when the HARQ RTT Timer run duration UE of UE enters non active time, because the position of the follow-up SF#4 at SFN#3 can start retransmission timer, then UE needs the monitoring carrying out L1eIMTA command in the position of the SF#0 of SFN#3, to ensure that UE knows the TDD configuration of correct SFN#3.
Embodiment seven,
Suppose that predefined L1eIMTA command delivery time is the subframe 0 of each radio frames, no matter and TDD configuration whether change, base station can send L1eIMTA command in each radio frames, and terminal obtain TDD configuration after, namely come into force at current wireless frame.
Terminal, after determining the moment needing to carry out upstream or downstream transfer of data, monitors L1eIMTA command as required.
Concrete, support the ability information of eIMTA based on UE, base station configures the eIMTA function of enable UE side in advance by RRC;
UE according to D-SR configuration prediction because transmitting uplink data enters moment of activationary time, as shown in Figure 10, the D-SR resource distribution of UE is at the SF#2 of SFN#3, then UE monitors eIMTA data at the SF#0 of SFN#3, to guarantee that UE can know that D-SR sends the TDD configuration of radio frames.Wherein, the transmission position UE of the L1eIMTA command of the TDD configuration correspondence of the place radio frames of D-SR resource distribution needs to monitor, also can when UE has actual data transfer, send in advance the transmission position of the D-SR that situation prediction actual capabilities use according to upstream data, carried out to the monitoring of L1eIMTA command the notice moment of TDD configuration corresponding to this D-SR place radio frames.
Embodiment eight,
Suppose that predefined L1eIMTA command delivery time is the subframe 0 of each radio frames, no matter and TDD configuration whether change, base station can send L1eIMTA command in each radio frames, and terminal obtain TDD configuration after, namely come into force at current wireless frame.
Terminal, after determining the moment needing to carry out upstream or downstream transfer of data, monitors L1eIMTA command as required.
Concrete, support the ability information of eIMTA based on UE, base station configures the eIMTA function of enable UE side in advance by RRC;
Terminal enters moment of activationary time according to having transmitting uplink data to need to trigger the moment prediction of RA-SR, as shown in figure 11, do not configure D-SR resource under UE is in non active time; If the RACH resource of UE can not ensure to be configured in the position being fixed as sub-frame of uplink, so when UE has transmitting uplink data will trigger RA-SR time, first the L1eIMTA command opening TDD configuration monitors, and is knowing that RACH resource that the subframe that TDD configures finds sub-frame of uplink corresponding carries out the transmission of RA-SR; The monitoring carrying out L1eIMTA command in relevant position is then continued after UE initiates Preamble.
Embodiment nine,
Suppose that predefined L1eIMTA command delivery time is the subframe 0 of each radio frames, no matter and TDD configuration whether change, base station can send L1eIMTA command in each radio frames, and terminal obtain TDD configuration after, namely come into force at current wireless frame.
Terminal, after determining the moment needing to carry out upstream or downstream transfer of data, monitors L1eIMTA command as required.
Concrete, support the ability information of eIMTA based on UE, base station configures the eIMTA function of enable UE side in advance by RRC;
Terminal predicts according to possible descending retransmission time the moment entering activationary time, concrete, under UE is in non active time, but also likely uplink retransmission occurs, and therefore also needs to monitor in the uplink data retransmission position of correspondence; Even if now UE is in non active time state, UE still needs to continue to monitor L1eIMTA command, and the direction configuring subframe corresponding to the corresponding up link process that changes or its scheduling subframe to prevent TDD changes.
The embodiment of the present invention also provides a kind of acquisition methods of dynamic TDD configuration, as shown in figure 12, comprising:
The moment that TDD configuration sends and cycle are determined in step S1201, base station;
The long DRX cycle of terminal is configured to the cycle that TDD configuration sends by step S1202, base station, and the state of activation position in each long DRX cycle of terminal is configured to comprise the position that TDD configures delivery time, make terminal can obtain dynamic TDD in state of activation and configure.
Concrete, be described by a specific embodiment:
Embodiment ten,
As shown in figure 13, suppose that predefined L1eIMTA command delivery time is the subframe 0 of each radio frames, and support the ability information of eIMTA based on UE, base station configures the eIMTA function of enable UE side in advance by RRC;
Base station is according to L1eIMTA command delivery time, and the DRX of base station to UE is configured to: long DRX cycle is that 10ms, onduration are configured to 1, longDRX-CycleStartOffset and are configured to 0.
UE after receiving DRX configuration, then according to DRX configuring maintenance active time, and at onduration corresponding occasions listen L1eIMTA command, can ensure to obtain TDD configuration in time.
The embodiment of the present invention is also corresponding provides a kind of terminal, as shown in figure 14, comprising:
Determining unit 1401, for determining that base station sends moment and the cycle of TDD configuration;
Acquiring unit 1402, before determining to need to carry out upstream or downstream transfer of data, sends the message that the occasions listen of TDD configuration is corresponding in base station, obtain the TDD configuration that base station sends.
Wherein, acquiring unit 1402 specifically for:
Send moment and the cycle of TDD configuration according to base station, when base station may send TDD configuration in each cycle, all monitor corresponding message, obtain the TDD configuration that base station sends.
Acquiring unit 1402 also for:
Send moment and the cycle of TDD configuration according to base station, when base station may send TDD configuration in each cycle, monitor specific schedule signaling.
Acquiring unit 1402 specifically for:
Determine the position needing to carry out upstream or downstream transfer of data;
Before determining the position needing to carry out upstream or downstream transfer of data, last can ensure that this position has the moment of the base station transmission TDD configuration that correct TDD configures,
Send the message that the occasions listen of TDD configuration is corresponding in the base station determined, obtain the TDD configuration that base station sends.
Acquiring unit 1402 also for:
Before determining the position needing to carry out upstream or downstream transfer of data, determine that base station all sends TDD configuration in each cycle.
Acquiring unit 1402 determines the position needing to carry out upstream or downstream transfer of data, specifically comprises:
The moment of activationary time is entered according to the timer prediction of terminal monitoring control channel; And/or
The moment of activationary time is entered according to the requirement forecasting of upstream or downstream transfer of data.
Acquiring unit 1402 enters the moment of activationary time according to the requirement forecasting of upstream or downstream transfer of data, comprises one of following or combination:
The moment entering activationary time is predicted according to possible descending retransmission time;
According to D-SR configuration prediction because transmitting uplink data enters moment of activationary time;
Need the moment prediction triggering RA-SR to enter the moment of activationary time according to there being transmitting uplink data;
The moment entering activationary time is predicted according to the possible uplink retransmission moment.
The embodiment of the present invention also provides a kind of base station, as shown in figure 15, comprising:
Send determining unit 1501, for determining the moment that TDD configuration sends and cycle;
Dispensing unit 1502, for the long DRX cycle of terminal being configured to the cycle that TDD configuration sends, and the state of activation position in each long DRX cycle of terminal is configured to comprise the position that TDD configures delivery time, make terminal can obtain dynamic TDD in state of activation and configure.
The embodiment of the present invention also provides a kind of terminal, and this terminal comprises:
Processor, is configured to for determining that base station sends moment and the cycle of TDD configuration; Before determining to need to carry out upstream or downstream transfer of data, send the message that the occasions listen of TDD configuration is corresponding in base station, obtain the TDD configuration that base station sends.
This terminal can also be configured to other functions realized in the acquisition methods of the dynamic TDD configuration that the embodiment of the present invention provides.
When this terminal carries out message sink, can be realized by Transceiver Module and wave point.
The embodiment of the present invention also provides a kind of base station, and this base station comprises:
Processor, is configured to for determining the moment that TDD configuration sends and cycle; The long DRX cycle of terminal is configured to the cycle that TDD configuration sends, and the state of activation position in each long DRX cycle of terminal is configured to comprise the position that TDD configures delivery time, make terminal can obtain dynamic TDD in state of activation and configure.
This base station can also be configured to other functions realized in the acquisition methods of the dynamic TDD configuration that the embodiment of the present invention provides.
When message transmission is carried out in this base station, can be realized by Transceiver Module and wave point.
The embodiment of the present invention provides a kind of acquisition methods of dynamic TDD configuration, base station and terminal, no matter whether terminal is in state of activation, terminal is before needs carry out upstream or downstream transfer of data, the moment sending TDD configuration in base station all monitors corresponding message, obtain the TDD configuration that base station sends, or base station is when the DRX cycle of configurating terminal, just be configured according to the moment and cycle that send TDD configuration, make terminal can get the TDD configuration of all base stations transmission in state of activation, and then ensure that UE can obtain community TDD uplink-downlink configuration modification information in time.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (16)
1. an acquisition methods for dynamic TDD configuration, is characterized in that, comprising:
Terminal determines that base station sends moment and the cycle of TDD configuration;
Before terminal determines to need to carry out upstream or downstream transfer of data, send the message that the occasions listen of TDD configuration is corresponding in base station, obtain the TDD configuration that base station sends.
2. the method for claim 1, is characterized in that, before described terminal determines to need to carry out upstream or downstream transfer of data, sends the message that the occasions listen of TDD configuration is corresponding in base station, obtains the TDD configuration that base station sends, specifically comprises:
Terminal sends moment and the cycle of TDD configuration according to base station, when base station may send TDD configuration in each cycle, all monitors corresponding message, obtains the TDD configuration that base station sends.
3. method as claimed in claim 2, is characterized in that, also comprise:
Terminal sends moment and the cycle of TDD configuration according to base station, when base station may send TDD configuration in each cycle, monitors specific schedule signaling.
4. the method for claim 1, is characterized in that, before described terminal determines to need to carry out upstream or downstream transfer of data, sends the message that the occasions listen of TDD configuration is corresponding in base station, obtains the TDD configuration that base station sends, specifically comprises:
Terminal determines the position needing to carry out upstream or downstream transfer of data;
Before terminal determines the position needing to carry out upstream or downstream transfer of data, last can ensure that this position has the moment of the base station transmission TDD configuration that correct TDD configures;
The message that the occasions listen that terminal configures at the base station transmission TDD determined is corresponding, obtains the TDD configuration that base station sends.
5. method as claimed in claim 4, it is characterized in that, described terminal also comprises before determining the position needing to carry out upstream or downstream transfer of data:
Terminal determines that base station all sends TDD configuration in each cycle.
6. method as claimed in claim 4, it is characterized in that, described terminal determines the position needing to carry out upstream or downstream transfer of data, specifically comprises:
Terminal enters the moment of activationary time according to the timer prediction of terminal monitoring control channel; And/or
Terminal enters the moment of activationary time according to the requirement forecasting of upstream or downstream transfer of data.
7. method as claimed in claim 6, it is characterized in that, described terminal enters the moment of activationary time according to the requirement forecasting of upstream or downstream transfer of data, comprises one of following or combination:
Terminal predicts according to possible descending retransmission time the moment entering activationary time;
Terminal configures prediction due to transmitting uplink data according to specific schedule request D-SR and enters moment of activationary time;
Terminal needs the moment of triggering Stochastic accessing dispatch request RA-SR to predict the moment entering activationary time according to there being transmitting uplink data;
Terminal predicts according to the possible uplink retransmission moment moment entering activationary time.
8. an acquisition methods for dynamic TDD configuration, is characterized in that, comprising:
The moment that TDD configuration sends and cycle are determined in base station;
The long discontinuous reception DRX period of terminal is configured to the cycle that TDD configuration sends by base station, and the state of activation position in each long DRX cycle of terminal is configured to comprise the position that TDD configures delivery time, make terminal can obtain dynamic TDD in state of activation and configure.
9. a terminal, is characterized in that, comprising:
Determining unit, for determining that base station sends moment and the cycle of TDD configuration;
Acquiring unit, before determining to need to carry out upstream or downstream transfer of data, sends the message that the occasions listen of TDD configuration is corresponding in base station, obtain the TDD configuration that base station sends.
10. terminal as claimed in claim 9, is characterized in that, described acquiring unit specifically for:
Send moment and the cycle of TDD configuration according to base station, when base station may send TDD configuration in each cycle, all monitor corresponding message, obtain the TDD configuration that base station sends.
11. terminals as claimed in claim 10, is characterized in that, described acquiring unit also for:
Send moment and the cycle of TDD configuration according to base station, when base station may send TDD configuration in each cycle, monitor specific schedule signaling.
12. terminals as claimed in claim 9, is characterized in that, described acquiring unit specifically for:
Determine the position needing to carry out upstream or downstream transfer of data;
Before determining the position needing to carry out upstream or downstream transfer of data, last can ensure that this position has the moment of the base station transmission TDD configuration that correct TDD configures;
Send the message that the occasions listen of TDD configuration is corresponding in the base station determined, obtain the TDD configuration that base station sends.
13. terminals as claimed in claim 12, is characterized in that, described acquiring unit also for:
Before determining the position needing to carry out upstream or downstream transfer of data, determine that base station all sends TDD configuration in each cycle.
14. terminals as claimed in claim 12, is characterized in that, described acquiring unit determines the position needing to carry out upstream or downstream transfer of data, specifically comprises:
The moment of activationary time is entered according to the timer prediction of terminal monitoring control channel; And/or
The moment of activationary time is entered according to the requirement forecasting of upstream or downstream transfer of data.
15. terminals as claimed in claim 14, it is characterized in that, described acquiring unit enters the moment of activationary time according to the requirement forecasting of upstream or downstream transfer of data, comprises one of following or combination:
The moment entering activationary time is predicted according to possible descending retransmission time;
Configure prediction due to transmitting uplink data according to specific schedule request D-SR and enter moment of activationary time;
Need the moment prediction triggering Stochastic accessing dispatch request RA-SR to enter the moment of activationary time according to there being transmitting uplink data;
The moment entering activationary time is predicted according to the possible uplink retransmission moment.
16. 1 kinds of base stations, is characterized in that, comprising:
Send determining unit, for determining the moment that TDD configuration sends and cycle;
Dispensing unit, for the long DRX cycle of terminal being configured to the cycle that TDD configuration sends, and the state of activation position in each long discontinuous reception DRX period of terminal is configured to comprise the position that TDD configures delivery time, make terminal can obtain dynamic TDD in state of activation and configure.
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Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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Effective date of registration: 20210608 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |