CN105530080A - LAA transmission method and device in cellular communication - Google Patents
LAA transmission method and device in cellular communication Download PDFInfo
- Publication number
- CN105530080A CN105530080A CN201410522832.XA CN201410522832A CN105530080A CN 105530080 A CN105530080 A CN 105530080A CN 201410522832 A CN201410522832 A CN 201410522832A CN 105530080 A CN105530080 A CN 105530080A
- Authority
- CN
- China
- Prior art keywords
- symbol
- carrier
- frame
- signaling
- present sub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides an LAA transmission method and an LAA transmission device in cellular communication. The LAA transmission method comprises the steps that: step 1, a base station monitors in a first time window of a first carrier to determine to send useful signals at a current subframe of the first carrier; step 2, the base station sends a first signaling on a second carrier for indicating N symbols used for transmitting the useful signals in the current subframe of the first carrier; step 3, and the base station sends the first useful signal in the current subframe of the first carrier, wherein the first useful signal occupies the N symbols. According to the LAA transmission method and the LAA transmission device, the LTE LAA can maintain fairness identical to that of Wifi, the air interface resource is fully utilized, and the LAA transmission method and the LAA transmission device maintain compatibility with an LTE system as far as possible.
Description
Technical field
The present invention relates in wireless communication system the scheme utilizing unlicensed spectrum to communicate, particularly relate to the method and apparatus based on the subframe structure in the unlicensed spectrum (UnlicensedSpectrum) of LTE (LongTermEvolution, Long Term Evolution).
Background technology
Traditional 3GPP (3rdGenerationPartnerProject, third generation partner program) in LTE system, transfer of data can only occur in authorizes on frequency spectrum, but along with the sharply increase of traffic carrying capacity, especially in some urban areas, frequency spectrum is authorized may to be difficult to the demand meeting traffic carrying capacity.62 plenary sessions of 3GPPRAN discuss a new research topic, namely the research (RP-132085) that unlicensed spectrum is comprehensive, main purpose is that the dependent (Non-standalone) of the LTE of research and utilization in unlicensed spectrum is disposed, and so-called dependent refers to that the communication in unlicensed spectrum is wanted and authorizes the Serving cell on frequency spectrum to be associated.One intuitively method be the CA (CarrierAggregation reused as far as possible in existing system, carrier aggregation) concept, namely be deployed in and authorize Serving cell on frequency spectrum as PCC (PrimaryComponentCarrier, main carrier), be deployed in Serving cell in unlicensed spectrum as SCC (SecondaryComponentCarrier, auxiliary carrier wave).In RAN#64 plenary session (seminar), the communication in unlicensed spectrum is LAA (LicenseAssistedAccess authorizes the auxiliary access of frequency spectrum) by Uniform Name.In RAN#65 plenary session, LAA is formally set up the project.
Multiple adjacent base stations from different operators may be deployed on identical frequency spectrum, and then produce serious co-channel interference, such as LBT (ListenBeforeTalk, first intercept rear transmission) etc. technology to a certain degree can alleviate inter base station interference, LBT and base station or UE (UserEquipment, subscriber equipment) sending the received power first monitored before signal in unlicensed spectrum, if determine there is no interference source in described unlicensed spectrum according to described received power, then in described unlicensed spectrum, send signal, otherwise do not send signal.
LTE communication mechanism is based on (being made up of multiple multicarrier symbol) subframe, and namely the transmission of a wireless signal can only occur and end at " tradition " moment (namely the transmission of wireless signal is in units of subframe or in units of symbol).If LTE transmitter can only be monitored to be confirmed whether to send in the special time window before described particular moment, then a potential unfairness is: can monitor to be confirmed whether can carry out sending in window with the Wifi equipment in frequency range at any time and once confirm to send, perform transmission immediately, thus compares LTELAA and have more send opportunity.
In order to ensure the access chance keeping (comparing with Wifi) fair in unlicensed spectrum, LTELAA probably equally will adopt LBE (LoadBasedEquipment with Wifi, equipment based on load) mode compete Radio Resource, namely LTELAA (monitor confirmation can launch after) can take Radio Resource at any time according to load and send wireless signal.
Consider forward compatibility, whether the subframe timing on LAA carrier wave is likely synchronous (or the i.e. step-out skew be associated is fixing or configurable) with the subframe timing of authorizing on frequency spectrum.LBE is applied in LTE one needs the problem discussed to be: when " tradition " described in the delivery time of LBE or end time correspond on LAA carrier wave moment outside the moment, and the wireless signal of LTELAA is to the mapping problems of physical layer resources.
For the problems referred to above, the invention discloses the LAA transmission method in a kind of cellular communication and device.
Summary of the invention
The invention discloses a kind of method in base station, it is characterized in that, comprise the steps:
-steps A. monitor to determine that the present sub-frame at first carrier sends useful signal in the very first time window of first carrier
-step B. sends in the described present sub-frame of the first signaling instruction first carrier on a second carrier for transmitting N number of symbol of useful signal
-step C. sends the first useful signal at the present sub-frame of first carrier, and the first useful signal takies described N number of symbol
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, and the second carrier wave is deployed in mandate frequency spectrum, and described N is the positive integer being not more than X and being not less than X/2.The described present sub-frame of first carrier is configured to descending normal CP (CyclicPrefix, Cyclic Prefix) and described X is 14, or the described present sub-frame of first carrier is configured to descending expansion CP and described X is 12.Described N number of symbol is continuous print in time domain.
Described symbol is the OFDM (OrthogonalFrequencyDivisionMultiplexing comprising CP, OFDM) symbol or comprise SC-FDMA (SingleCarrierFrequencyDivisionMultipleAccess, the single-carrier frequency division multiple access) symbol of CP.The essence of said method is base station (according to monitoring result) authorizing symbol frequency spectrum sending the useful signal in physical layer signaling dynamic-configuration unlicensed spectrum and take in subframe, to make full use of Radio Resource.
As an embodiment, the subframe timing of first carrier and the subframe timing of the second carrier wave are synchronous, and the transmission subframe of the first signaling is described present sub-frame.
As an embodiment, described useful signal comprises physical layer data and the corresponding RS (ReferenceSignal for channel estimating, reference signal), the described RS for channel estimating is DMRS (DemodulationRS, demodulation RS) or CRS (CellRS, community RS).
As an embodiment, described useful signal comprises physical layer data and the corresponding RS for channel estimating and the RS for channel measurement, the described RS for channel measurement comprises { CSI-RS, IMR (InterferenceMeasurementResource, interferometry resource) } in one or two kinds.
As an embodiment, at least one during described monitoring comprises { detect received power, detect characteristic sequence }.As an embodiment, very first time window comprises K continuous print timeslice, and the length of described timeslice is predetermined and is not less than 20us (microsecond, microsecond) or configurable, described K is that described base station is determined when monitoring at every turn at random, and described K is positive integer.
Concrete, according to an aspect of the present invention, it is characterized in that, described N number of symbol is indicated by the Y in the first signaling bit, described Y be less than 4 positive integer.
As an embodiment, the one in the V kind candidate pattern of the described N number of symbol of described Y bit instruction in described present sub-frame, described V kind candidate pattern is configured by high-level signaling, and described V is the positive integer of the Y power being not more than 2.As the sub-embodiment 1 of the present embodiment, described Y is 1, and described V is 2, the PDSCH symbol in the corresponding complete subframe of described V kind candidate pattern difference and the PDSCH symbol in imperfect subframe.Described imperfect subframe refers to because LBE is inverted the subframe that have lost part PDSCH symbol, otherwise is then complete subframe.The advantage of above-mentioned sub-embodiment 1 can only introduce 1 bit in the first signaling, reduces the expense of control signal.But above-mentioned sub-embodiment 1 may introduce new PDSCH subframe structure, the candidate pattern such as corresponding to imperfect subframe is rear X/2 symbol of described present sub-frame.
Concrete, according to an aspect of the present invention, it is characterized in that, described step B also comprises the steps:
-step B0. circulates and sends characteristic sequence in the second time window of first carrier
Wherein, the initial time of the second time window compares the end time delay T1us of very first time window, and the end time of the second time window is the end time of the previous symbol of described N number of symbol.Described T1us is more than or equal to the reception of described base station/transmission switching time.
As an embodiment, at least one during described characteristic sequence comprises { ZC (ZadoffChu) sequence, pseudo random sequence }.As an embodiment, the reception of described base station/transmission switching time is 624Ts, and described Ts is 1/30720 millisecond.As an embodiment, the second time window is less than the duration of a symbol.
Concrete, according to an aspect of the present invention, it is characterized in that, described N number of symbol is the non-reserved symbol in front M1 symbol of described present sub-frame, described M1 is an element in Positive Integer Set Z1, described Z1 comprises can carry PDSCH (PhysicalDownlinkSharedChannel, Physical Downlink Shared Channel) DwPTS (DownlinkPilotTimeSlot, descending pilot frequency time slot) in possible symbolic number, described stet is that configured by high-level signaling or empty; Or described N number of symbol is rear M2 symbol of described present sub-frame, and described M2 is an element in Positive Integer Set Z2, and described Z2 comprises symbolic number possible in the PDSCH of normal sub-frames.
Implement profit as one, described stet is front R symbol of described present sub-frame, and described high-level signaling is epdcch-StartSymbolIE (InformationElement, information unit).
The essence of above-mentioned aspect is the subframe structure of as far as possible reusing existing PDSCH, avoids such as, because LBE introduces new subframe structure (do not get rid of because LAA introduces new PDSCH subframe structure, described Z2 also comprises described X).As an embodiment, the first useful signal to the mapping of physical resource reuse PDSCH in the subframe structure of corresponding PDSCH and for the RS of channel estimating to the mapping of physical resource.
As an embodiment, the described present sub-frame of first carrier is configured to descending normal CP, and described Z1 is { 9,10,11,12}.As an embodiment, the described present sub-frame of first carrier is configured to descending expansion CP, and described Z1 is { 8,9,10}.
Symbolic number possible in the PDSCH of described normal sub-frames is the symbolic number that described X deducts for PDCCH (PhysicalDownlinkControlChannel, Physical Downlink Control Channel).As an embodiment, if the described present sub-frame of first carrier is configured to descending normal CP, described Z2 is { 13,12,11}; If the described present sub-frame of described first carrier is configured to descending expansion CP, described Z2 is { 11,10,9}.As a sub-embodiment of above-described embodiment, the subframe timing of first carrier and the second carrier wave is synchronous, the upper transmission of EPDCCH (EnhancedPDCCH, the PDCCH of enhancing) of the first signaling described present sub-frame on a second carrier.As another the sub-embodiment of above-described embodiment, the subframe timing that the subframe timing of first carrier compares the association subframe of second carrier wave of answering postpones special time skew, transmission on the PDCCH of the first signaling described association subframe on a second carrier, described special time skew is less than 1ms.
As an embodiment, described Z2 also comprises described X.If namely the described present sub-frame of first carrier is configured to descending normal CP, described Z2 is { 14,13,12,11}; If the described present sub-frame of described first carrier is configured to descending expansion CP, described Z2 is { 12,11,10,9}.As a sub-embodiment of above-described embodiment, the subframe timing of first carrier and the second carrier wave is synchronous, and the first signaling is transmitted on the EPDCCH of the second carrier wave.As another the sub-embodiment of above-described embodiment, the subframe timing that the subframe timing of first carrier compares the association subframe of second carrier wave of answering postpones special time skew, transmission on the PDCCH of the first signaling described association subframe on a second carrier, described special time skew is less than 1ms.
Except reusing existing subframe structure, another advantage of above-mentioned two embodiments supports that first carrier and the second carrier wave keep synchronous subframe timing.
Above-described embodiment does not consider that described M2 equals the scene-be applicable to 1.25MHz (Mega-Hertz, megahertz) system bandwidth that described X deducts 4, and 1.25MHz system bandwidth may not be main configuration in unlicensed spectrum.
As an embodiment, described Y is 3 (namely described N number of symbol is indicated by the bit of 3 in the first signaling).One in the V1 kind candidate pattern of the described N number of symbol of described Y bit instruction in described present sub-frame, described V1 kind candidate pattern is predetermined, described V1 be not more than 4 positive integer, described V1 kind candidate pattern comprises, and { the non-reserved symbol in a described front M1 symbol is (described above, described M1 comprises 3 ~ 4 kinds of possibilities), described rear M2 symbol (as mentioned above, described M2 comprises 3 ~ 4 kinds of possibilities) }.
The corresponding LTELAA of described rear M2 symbol to the initial time once taken of Radio Resource to nearest LAA carrier wave subframe end time between symbol.The corresponding LTELAA of described front M1 symbol is to the symbol between the subframe initial time of LAA carrier wave nearest before the end time once taken of Radio Resource to the described end time once taken.If LTELAA corresponds to the end time of a subframe all the time to the end time once taken of Radio Resource, then described N number of symbol can only be rear M2 the symbol (namely can not be described M1 symbol of described present sub-frame) of described present sub-frame.
As an embodiment, described Y is 3.One in the V2 kind candidate pattern of the described N number of symbol of described Y bit instruction in described present sub-frame, described V2 kind candidate pattern is predetermined, described V2 be not more than 8 positive integer, described V2 kind candidate pattern comprises { a described rear M2 symbol (as mentioned above, described M2 comprises 3 ~ 4 kinds of possibilities) }.
As an embodiment, described Y is 3.One in the V3 kind candidate pattern of the described N number of symbol of described Y bit instruction in described present sub-frame, described V3 kind candidate pattern is predetermined, described V3 be not more than 8 positive integer, described V3 kind candidate pattern comprises { a described rear M2 symbol }.Described Z2 also comprises all integers meeting following condition:
-. be not less than described X/2 and be less than the minimum symbolic number in the PDSCH of normal sub-frames.
Do not consider the scene of 4 PDCCH symbols, if the described present sub-frame of first carrier is configured to descending normal CP, minimum symbolic number in the PDSCH of described normal sub-frames is 11, if the described present sub-frame of first carrier is configured to descending expansion CP, the minimum symbolic number in the PDSCH of described normal sub-frames is 9.Namely Z2 described in above-described embodiment be X/2, X/2+1, X/2+2 ..., X-1} or X/2, X/2+1, X/2+2 ..., X}.
Above-described embodiment introduces new PDSCH frame structure, and its advantage to support that initial time is the descending transmission of the optional position in the previous time slot of described present sub-frame.
Concrete, according to an aspect of the present invention, it is characterized in that, described N number of symbol is arranged in the same time slot of described present sub-frame.
In LTE, a subframe comprises 2 time slots, each time slot 0.5ms (millisecond, millisecond).As an embodiment, when the first useful signal adopts special subframe to configure 1 to the mapping of physical resource in described same time slot special subframe previous time slot in downstream signal and for the RS of channel estimating to the mapping of physical resource.
Concrete, according to an aspect of the present invention, it is characterized in that, the first signaling is the dispatch of the first useful signal.
As an embodiment, the first signaling is DCI (DownlinkControlInformation, Downlink Control Information) form { 1,1A, 1B, 1C, 1D, the one in 2,2A, 2B, 2C, 2D}.Namely LAA carrier wave supports CRS and DMRS simultaneously.
As an embodiment, the subframe timing of first carrier and the second carrier wave is synchronous, and the first signaling is transmitted on the EPDCCH of the second carrier wave.
Concrete, according to an aspect of the present invention, it is characterized in that, first signaling is positioned at CSS (CommonSearchSpace, public search space) and the signaling identified by the public RNTI in community (RadioNetworkTemporaryIdentifier, wireless network fixes tentatively identity).
As an embodiment, described community common signaling is configured by high-level signaling.As an embodiment, the first signaling comprises G group configuration information, wherein the described configuration information I of g group
gcomprise carrier index C
gwith notation index S
g, described S
gat described C
gthe symbol that in described present sub-frame on the carrier wave of index, useful signal takies, described G is positive integer, and described g is the positive integer of 1 to described G.
As an embodiment, the subframe timing of first carrier compares the subframe timing delay special time skew of the second carrier wave of association, and the first signaling is transmitted on the PDCCH of the second carrier wave.Described special time skew is fixing or configurable.
In above-described embodiment, one group in the index of first carrier and the corresponding described G group configuration information of described N number of symbol.
As an embodiment, the payload size of the first signaling equals the DCI format { payload size of 1A} for dispatching first carrier sent on a second carrier.
The invention discloses a kind of method in UE, it is characterized in that, comprise the steps:
-steps A. receive on a second carrier in the present sub-frame of the first signaling determination first carrier for transmitting N number of symbol of useful signal
-step B. receives the first useful signal at the described present sub-frame of first carrier, and the first useful signal takies described N number of symbol
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, and the second carrier wave is deployed in mandate frequency spectrum, and described N is the positive integer being not more than X and being not less than X/2.The described present sub-frame of first carrier is configured to descending normal CP and described X is 14, or the described present sub-frame of first carrier is configured to descending expansion CP and described X is 12.Described N number of symbol is continuous print in time domain.
Concrete, according to an aspect of the present invention, it is characterized in that, described N number of symbol is indicated by the Y in the first signaling bit, described Y be less than 4 positive integer.
As an embodiment, the one in the V kind candidate pattern of the described N number of symbol of described Y bit instruction in described present sub-frame, described V kind candidate pattern is pre-determining, and described V is the positive integer of the Y power being not more than 2.
Concrete, according to an aspect of the present invention, it is characterized in that, described steps A also comprises the steps:
-steps A 0. receives the characteristic sequence that circulation sends in the second time window of first carrier
Wherein, the initial time of the second time window compares the end time delay T1us of very first time window, and the end time of the second time window is the end time of the previous symbol of described N number of symbol.Described T1us is more than or equal to the reception of described base station/transmission switching time.
As an embodiment, at least one during described characteristic sequence comprises { ZC sequence, pseudo random sequence }.As an embodiment, described UE one of assists below execution at least according to described characteristic sequence:
-. adjustment AGC (AutomaticGainControl, automatic growth control)
-. down-going synchronous.
Concrete, according to an aspect of the present invention, it is characterized in that, described N number of symbol is the non-reserved symbol in front M1 symbol of described present sub-frame, described M1 is an element in Positive Integer Set Z1, described Z1 comprises can carry symbolic number possible in the DwPTS of PDSCH, and described stet is that configured by high-level signaling or empty; Or described N number of symbol is rear M2 symbol of described present sub-frame, and described M2 is an element in Positive Integer Set Z2, and described Z2 comprises symbolic number possible in the PDSCH of normal sub-frames.
Concrete, according to an aspect of the present invention, it is characterized in that, described N number of symbol is arranged in the same time slot of described present sub-frame.
Concrete, according to an aspect of the present invention, it is characterized in that, the first signaling is the dispatch of the first useful signal.
Concrete, according to an aspect of the present invention, it is characterized in that, the first signaling is the signaling being positioned at CSS and being identified by the public RNTI in community.
As an embodiment, the payload size of the first signaling equals the DCI format { payload size of 1C} for dispatching first carrier sent on a second carrier.
As an embodiment, the first signaling is the one in DCI{2B, 2C, 2D}.Namely LAA carrier wave only supports DMRS.
The invention discloses a kind of base station equipment, it is characterized in that, this equipment comprises:
First module: determine that the present sub-frame at first carrier sends useful signal for monitoring in the very first time window of first carrier
Second module: indicate for sending the first signaling on a second carrier in the described present sub-frame of first carrier for transmitting N number of symbol of useful signal
3rd module: for sending the first useful signal at the present sub-frame of first carrier, the first useful signal takies described N number of symbol
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, and the second carrier wave is deployed in mandate frequency spectrum, and described N is the positive integer being not more than X and being not less than X/2.The described present sub-frame of first carrier is configured to descending normal CP and described X is 14, or the described present sub-frame of first carrier is configured to descending expansion CP and described X is 12.Described N number of symbol is continuous print in time domain.
As an embodiment, the feature of the said equipment is, described N number of symbol is the non-reserved symbol in front M1 symbol of described present sub-frame, described M1 is an element in Positive Integer Set Z1, described Z1 comprises can carry symbolic number possible in the DwPTS of PDSCH, and described stet is that configured by high-level signaling or empty; Or described N number of symbol is rear M2 symbol of described present sub-frame, and described M2 is an element in Positive Integer Set Z2, and described Z2 comprises symbolic number possible in the PDSCH of normal sub-frames.
As an embodiment, the feature of the said equipment is, described N number of symbol is indicated by the Y in the first signaling bit, described Y be less than 4 positive integer.
As an embodiment, the second module also sends characteristic sequence for circulation in the second time window of first carrier.Wherein, the initial time of the second time window compares the end time delay T1us of very first time window, and the end time of the second time window is the end time of the previous symbol of described N number of symbol.Described T1us is more than or equal to the reception of described base station/transmission switching time.
The invention discloses a kind of subscriber equipment, it is characterized in that, this equipment comprises:
First module: for receive the first signaling determination first carrier on a second carrier present sub-frame in for transmitting N number of symbol of useful signal
Second module: receive the first useful signal for the described present sub-frame at first carrier, the first useful signal takies described N number of symbol
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, and the second carrier wave is deployed in mandate frequency spectrum, and described N is the positive integer being not more than X and being not less than X/2.The described present sub-frame of first carrier is configured to descending normal CP and described X is 14, or the described present sub-frame of first carrier is configured to descending expansion CP and described X is 12.Described N number of symbol is continuous print in time domain.
As an embodiment, the feature of the said equipment is, described N number of symbol is the non-reserved symbol in front M1 symbol of described present sub-frame, described M1 is an element in Positive Integer Set Z1, described Z1 comprises can carry symbolic number possible in the DwPTS of PDSCH, and described stet is that configured by high-level signaling or empty; Or described N number of symbol is rear M2 symbol of described present sub-frame, and described M2 is an element in Positive Integer Set Z2, and described Z2 comprises symbolic number possible in the PDSCH of normal sub-frames.
As an embodiment, the feature of the said equipment is, described N number of symbol is indicated by the Y in the first signaling bit, described Y be less than 4 positive integer.
As an embodiment, the first module also for receiving the characteristic sequence that circulation sends in the second time window of first carrier.Wherein, the initial time of the second time window compares the end time delay T1us of very first time window, and the end time of the second time window is the end time of the previous symbol of described N number of symbol.Described T1us is more than or equal to the reception of described base station/transmission switching time.
LTELAA adopts the problem that the transmitting-receiving moment of wireless signal can be caused incompatible during LBE.For this problem, in the scheme that the present invention proposes, base station dynamically indicates the symbol shared by the useful signal in present sub-frame.As an embodiment, the solution of the present invention has reused the PDSCH subframe structure of existing LTE, does not namely introduce new PDSCH subframe structure because of LBE.The invention enables LTELAA to keep the fairness identical with Wifi, make full use of interface-free resources simultaneously.In addition, the present invention keeps the compatibility with LTE system as far as possible.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:
Fig. 1 shows downlink transfer flow chart according to an embodiment of the invention;
Fig. 2 shows the sequential chart of the LBT based on LBE according to an embodiment of the invention;
Fig. 3 shows the mapping schematic diagram of useful signal according to an embodiment of the invention to physical resource;
Fig. 4 shows the structured flowchart of the processing unit in base station according to an embodiment of the invention;
Fig. 5 shows the structured flowchart of the processing unit in UE according to an embodiment of the invention;
Embodiment
Hereafter will be described in further detail technical scheme of the present invention by reference to the accompanying drawings, and it should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine arbitrarily mutually.
Embodiment 1
Embodiment 1 illustrates downlink transfer flow chart, as shown in Figure 1.In accompanying drawing 1, base station N1 is the serving BS of UEU2.
For base station N1, in step s 11, monitor to determine that the present sub-frame at first carrier sends useful signal in the very first time window of first carrier; In step s 12, send on a second carrier in the described present sub-frame of the first signaling instruction first carrier for transmitting N number of symbol of useful signal; In step s 13, send the first useful signal at the present sub-frame of first carrier, the first useful signal takies described N number of symbol.
For UEU2, in the step s 21, receive on a second carrier in the present sub-frame of the first signaling determination first carrier for transmitting N number of symbol of useful signal; In step S22, receive the first useful signal at the described present sub-frame of first carrier.
In embodiment 1, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, and the second carrier wave is deployed in mandate frequency spectrum, and described N is the positive integer being not more than X and being not less than X/2.The described present sub-frame of first carrier is configured to descending normal CP and described X is 14, or the described present sub-frame of first carrier is configured to descending expansion CP and described X is 12.Described N number of symbol is continuous print in time domain.First signaling is transmitted at described present sub-frame.
As the sub-embodiment 1 of embodiment 1, described N number of symbol is the non-reserved symbol in front M1 symbol of described present sub-frame, described M1 is an element in Positive Integer Set Z1, described Z1 comprises can carry symbolic number possible in the DwPTS of PDSCH, and described stet is that configured by high-level signaling or empty; Or described N number of symbol is rear M2 symbol of described present sub-frame, and described M2 is an element in Positive Integer Set Z2, and described Z2 comprises symbolic number possible in the PDSCH of normal sub-frames.Described N number of symbol is indicated by the bit of 2 in the first signaling, or described N number of symbol is indicated by the bit of 3 in the first signaling.
As the sub-embodiment 2 of embodiment 1, described N number of symbol is arranged in the same time slot of described present sub-frame.Described N number of symbol is indicated by the bit of 1 in the first signaling, and described same time slot is a rear time slot of described present sub-frame.
Sub-embodiment 3, first signaling as embodiment 1 is the dispatch of the first useful signal.
Sub-embodiment 4, first signaling as embodiment 1 is the signaling being positioned at CSS and being identified by the public RNTI in community.
As the sub-embodiment 5 of embodiment 1, described N number of symbol is indicated by the Y in the first signaling bit, described Y be less than 4 positive integer, one in the V kind candidate pattern of the described N number of symbol of described Y bit instruction in described present sub-frame, described V kind candidate pattern is configured by high-level signaling, and described V is the positive integer of the Y power being not more than 2.
Embodiment 2
Embodiment 2 illustrates the sequential chart of the LBT based on LBE, as shown in Figure 2.In accompanying drawing 2, oblique line mark very first time window, backslash identifies the second time window, the transfer resource of cross spider mark useful signal.
First base station monitors to determine that the present sub-frame at first carrier sends useful signal in the very first time window of first carrier; Then send the first signaling on a second carrier to indicate to UE in the described present sub-frame of first carrier for transmitting N number of symbol of useful signal; Finally send the first useful signal to UE at the described present sub-frame of first carrier, the first useful signal takies described N number of symbol.
In embodiment 2, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, and the second carrier wave is deployed in mandate frequency spectrum, and described N is the positive integer being not more than X and being not less than X/2.The described present sub-frame of first carrier is configured to descending normal CP and described X is 14, or the described present sub-frame of first carrier is configured to descending expansion CP and described X is 12.Described N number of symbol is continuous print in time domain.The subframe timing of first carrier and the subframe timing of the second carrier wave are synchronous.
As the sub-embodiment 1 of embodiment 2, described present sub-frame is the first subframe in accompanying drawing 2, described N number of symbol is rear M2 the symbol (the cross spider mark as in the first subframe) of described present sub-frame, described M2 is an element in Positive Integer Set Z2, and described Z2 comprises symbolic number possible in the PDSCH of normal sub-frames.First signaling is transmitted on the EPDCCH of the first subframe (cannot transmit on PDCCH, because base station can not determine whether send the first useful signal at the initial time of the first subframe).
As the sub-embodiment 2 of embodiment 2, four-headed arrow AR1 indicates base station once to take covered time range (from the t_1 moment to the t_2 moment) on first carrier, described present sub-frame is the second subframe in accompanying drawing 2, described N number of symbol is front M1 the symbol (the cross spider mark as in the second subframe) of described present sub-frame, described M1 is an element in Positive Integer Set Z1, and described Z1 comprises can carry symbolic number possible in the DwPTS of PDSCH.First signaling is transmitted at EPDCCH or PDCCH of the second subframe.
As the sub-embodiment 3 of embodiment 2, circulate and send L+1 characteristic sequence (with the addition of the oblique line mark of numeral in as accompanying drawing 2, wherein send by truncation for the L+1 time) in described base station in the second time window of first carrier.Wherein, the end time that the initial time of the second time window compares very first time window postpones T1us, and the end time of the second time window is end time i.e. second time window of the previous symbol of described N number of symbol and described N number of symbol is continuous print.Described T1us is more than or equal to the reception of described base station/transmission switching time.
Embodiment 3
Embodiment 3 illustrates the mapping schematic diagram of the useful signal in a PRBP (PhysicalResourceBlockPair, Physical Resource Block to) to physical resource, as shown in Figure 3.In accompanying drawing 3, cross spider mark DMRS, oblique line mark CSI-RS, thick line mark CRS, blank mark PDSCH, the grid of backslash mark is the symbol that can not be used for transmitting useful signal.
The present sub-frame of base station on the carrier wave of unlicensed spectrum sends useful signal, and described useful signal takies N number of symbol, and described present sub-frame is configured to normal CP.
As the sub-embodiment 1 of embodiment 3, described N number of symbol is rear M2 symbol of described present sub-frame, and described M2 is an element in Positive Integer Set Z2, and described Z2 comprises { 11,12,13,14}.Described useful signal comprises PDSCH, DMRS, CSI-RS, wherein, DMRS and CSI-RS reuses the physical resource mapping scheme of existing LTE completely, when M2 is not 14, PDSCH reuses the physical resource mapping scheme of existing LTE completely, and when M2 is 14, PDSCH maps from first sign-on of described present sub-frame, and other reuse the respective physical resource mapping scheme of existing LTE.Accompanying drawing 3 (a) illustrates the scene that M2 is 11.
As the sub-embodiment 2 of embodiment 3, described N number of symbol is rear M2 symbol of described present sub-frame, described M2 is 7, described useful signal comprises PDSCH, DMRS, wherein, DMRS reuses the DMRS physical resource mapping scheme of special subframe in previous time slot when special subframe in existing LTE configures 1, as shown in accompanying drawing 3 (b).
As the sub-embodiment 3 of embodiment 3, described N number of symbol is front M1 symbol of described present sub-frame, and described M1 is an element in Positive Integer Set Z1, and described Z1 comprises { 9,10,11,12}.Described useful signal comprises PDSCH, CRS, CSI-RS, and described useful signal reuses corresponding mapping scheme in existing LTE to the mapping of physical resource.Accompanying drawing 3 (c) illustrates the scene that M1 is 10.
As the sub-embodiment 4 of embodiment 3, described N number of symbol is the non-reserved symbol in front M1 symbol of described present sub-frame, and described M1 is an element in Positive Integer Set Z1, described Z1 comprises { 9,10,11,12}, described stet is configured by high-level signaling.Described useful signal comprises PDSCH, DMRS, and described useful signal is reused existing LTE to the mapping of physical resource and comprised corresponding downstream signal mapping scheme in the DwPTS of M1 symbol.It is 11 that accompanying drawing 3 (d) illustrates M1, and described stet is the scene of front 2 symbols of described present sub-frame.
Embodiment 4
Embodiment 4 illustrates the structured flowchart of the processing unit in base station, as shown in Figure 4.In accompanying drawing 4, processing unit 400 is by monitoring modular 401, and sending module 402 and sending module 403 form.
For monitoring in the very first time window of first carrier, monitoring modular 401 determines that the present sub-frame at first carrier sends useful signal; Sending module 402 indicates for sending the first signaling on a second carrier in the described present sub-frame of first carrier for transmitting N number of symbol of useful signal; Sending module 403 is for sending the first useful signal at the present sub-frame of first carrier, and the first useful signal takies described N number of symbol.
In embodiment 4, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, and the second carrier wave is deployed in mandate frequency spectrum, and described N is the positive integer being not more than X and being not less than X/2.The described present sub-frame of first carrier is configured to descending normal CP and described X is 14, or the described present sub-frame of first carrier is configured to descending expansion CP and described X is 12.Described N number of symbol is continuous print in time domain.The subframe timing of first carrier and the subframe timing of the second carrier wave are synchronous and the first signaling is transmitted at described present sub-frame, or the subframe timing of first carrier and the subframe timing of the second carrier wave be associate and the first signaling at the association sub-frame transmission of described present sub-frame at the second carrier wave.
As the sub-embodiment 1 of embodiment 4, described N number of symbol is the non-reserved symbol in front M1 symbol of described present sub-frame, described M1 is an element in Positive Integer Set Z1, described Z1 comprises can carry symbolic number possible in the DwPTS of PDSCH, and described stet is that configured by high-level signaling or empty; Or described N number of symbol is rear M2 symbol of described present sub-frame, and described M2 is an element in Positive Integer Set Z2, and described Z2 comprises symbolic number possible in the PDSCH of normal sub-frames.
As the sub-embodiment 2 of embodiment 4, sending module 402 also sends characteristic sequence for circulation in the second time window of first carrier.Wherein, the initial time of the second time window compares the end time delay T1us of very first time window, and the end time of the second time window is the end time of the previous symbol of described N number of symbol.Described T1us is more than or equal to the reception of described base station/transmission switching time.
Embodiment 5
Embodiment 5 illustrates the structured flowchart of the processing unit in UE, as shown in Figure 5.In accompanying drawing 5, processing unit 500 is made up of receiver module 501 and receiver module 502.
Receiver module 501 for receive the first signaling determination first carrier on a second carrier present sub-frame in for transmitting N number of symbol of useful signal; Receiver module 502 receives the first useful signal for the described present sub-frame at first carrier, and the first useful signal takies described N number of symbol.
In embodiment 5, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, and the second carrier wave is deployed in mandate frequency spectrum, and described N is the positive integer being not more than X and being not less than X/2.The described present sub-frame of first carrier is configured to descending normal CP and described X is 14, or the described present sub-frame of first carrier is configured to descending expansion CP and described X is 12.Described N number of symbol is continuous print in time domain.The subframe timing of first carrier and the subframe timing of the second carrier wave are synchronous and the first signaling is transmitted at described present sub-frame, or the subframe timing of first carrier and the subframe timing of the second carrier wave be associate and the first signaling at the association sub-frame transmission of described present sub-frame at the second carrier wave.
As the sub-embodiment 1 of embodiment 5, described N number of symbol is indicated by the Y in the first signaling bit, described Y be less than 4 positive integer.
Sub-embodiment 2, first signaling as embodiment 5 is the dispatch of the first useful signal.
Sub-embodiment 3, first signaling as embodiment 5 is the signaling being positioned at CSS and being identified by the public RNTI in community.
The all or part of step that one of ordinary skill in the art will appreciate that in said method can be carried out instruction related hardware by program and complete, and described program can be stored in computer-readable recording medium, as read-only memory, and hard disk or CD etc.Optionally, all or part of step of above-described embodiment also can use one or more integrated circuit to realize.Accordingly, each modular unit in above-described embodiment, can adopt example, in hardware to realize, and also can be realized by the form of software function module, the application is not limited to the combination of the software and hardware of any particular form.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improves, all should be included within protection scope of the present invention.
Claims (16)
1. the method in base station, is characterized in that, comprises the steps:
-steps A. monitor to determine that the present sub-frame at first carrier sends useful signal in the very first time window of first carrier
-step B. sends in the described present sub-frame of the first signaling instruction first carrier on a second carrier for transmitting N number of symbol of useful signal
-step C. sends the first useful signal at the present sub-frame of first carrier, and the first useful signal takies described N number of symbol.
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, and the second carrier wave is deployed in mandate frequency spectrum, and described N is the positive integer being not more than X and being not less than X/2.The described present sub-frame of first carrier is configured to descending normal CP and described X is 14, or the described present sub-frame of first carrier is configured to descending expansion CP and described X is 12.Described N number of symbol is continuous print in time domain.
2. method according to claim 1, is characterized in that, described N number of symbol is indicated by the Y in the first signaling bit, described Y be less than 4 positive integer.
3. method according to claim 1, is characterized in that, described step B also comprises the steps:
-step B0. circulates and sends characteristic sequence in the second time window of first carrier.
Wherein, the initial time of the second time window compares the end time delay T1us of very first time window, and the end time of the second time window is the end time of the previous symbol of described N number of symbol.Described T1us is more than or equal to the reception of described base station/transmission switching time.
4. according to claim 1, method described in 2, it is characterized in that, described N number of symbol is the non-reserved symbol in front M1 symbol of described present sub-frame, described M1 is an element in Positive Integer Set Z1, described Z1 comprises can carry symbolic number possible in the DwPTS of PDSCH, and described stet is that configured by high-level signaling or empty; Or described N number of symbol is rear M2 symbol of described present sub-frame, and described M2 is an element in Positive Integer Set Z2, and described Z2 comprises symbolic number possible in the PDSCH of normal sub-frames.
5. according to claim 1, the method described in 2, is characterized in that, described N number of symbol is arranged in the same time slot of described present sub-frame.
6. the method according to claim 1-5, is characterized in that, the first signaling is the dispatch of the first useful signal, or the first signaling is the signaling being positioned at CSS and being identified by the public RNTI in community.
7. the method in UE, is characterized in that, comprises the steps:
-steps A. receive on a second carrier in the present sub-frame of the first signaling determination first carrier for transmitting N number of symbol of useful signal
-step B. receives the first useful signal at the described present sub-frame of first carrier, and the first useful signal takies described N number of symbol.
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, and the second carrier wave is deployed in mandate frequency spectrum, and described N is the positive integer being not more than X and being not less than X/2.The described present sub-frame of first carrier is configured to descending normal CP and described X is 14, or the described present sub-frame of first carrier is configured to descending expansion CP and described X is 12.Described N number of symbol is continuous print in time domain.
8. method according to claim 7, is characterized in that, described N number of symbol is indicated by the Y in the first signaling bit, described Y be less than 4 positive integer.
9. method according to claim 7, is characterized in that, described steps A also comprises the steps:
-steps A 0. receives the characteristic sequence that circulation sends in the second time window of first carrier.
Wherein, the initial time of the second time window compares the end time delay T1us of very first time window, and the end time of the second time window is the end time of the previous symbol of described N number of symbol.Described T1us is more than or equal to the reception of described base station/transmission switching time.
10. according to claim 7, method described in 8, it is characterized in that, described N number of symbol is the non-reserved symbol in front M1 symbol of described present sub-frame, described M1 is an element in Positive Integer Set Z1, described Z1 comprises can carry symbolic number possible in the DwPTS of PDSCH, and described stet is that configured by high-level signaling or empty; Or described N number of symbol is rear M2 symbol of described present sub-frame, and described M2 is an element in Positive Integer Set Z2, and described Z2 comprises symbolic number possible in the PDSCH of normal sub-frames.
11. according to claim 7, and the method described in 8, is characterized in that, described N number of symbol is arranged in the same time slot of described present sub-frame.
12. methods according to claim 7-11, it is characterized in that, the first signaling is the dispatch of the first useful signal, or the first signaling is the signaling being positioned at CSS and being identified by the public RNTI in community.
13. 1 kinds of base station equipments, is characterized in that, this equipment comprises:
First module: determine that the present sub-frame at first carrier sends useful signal for monitoring in the very first time window of first carrier
Second module: indicate for sending the first signaling on a second carrier in the described present sub-frame of first carrier for transmitting N number of symbol of useful signal
3rd module: for sending the first useful signal at the present sub-frame of first carrier, the first useful signal takies described N number of symbol.
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, and the second carrier wave is deployed in mandate frequency spectrum, and described N is the positive integer being not more than X and being not less than X/2.The described present sub-frame of first carrier is configured to descending normal CP and described X is 14, or the described present sub-frame of first carrier is configured to descending expansion CP and described X is 12.Described N number of symbol is continuous print in time domain.
14. equipment according to claim 13, it is characterized in that, described N number of symbol is the non-reserved symbol in front M1 symbol of described present sub-frame, described M1 is an element in Positive Integer Set Z1, described Z1 comprises can carry symbolic number possible in the DwPTS of PDSCH, and described stet is that configured by high-level signaling or empty; Or described N number of symbol is rear M2 symbol of described present sub-frame, and described M2 is an element in Positive Integer Set Z2, and described Z2 comprises symbolic number possible in the PDSCH of normal sub-frames.
15. 1 kinds of subscriber equipmenies, is characterized in that, this equipment comprises:
First module: for receive the first signaling determination first carrier on a second carrier present sub-frame in for transmitting N number of symbol of useful signal
Second module: receive the first useful signal for the described present sub-frame at first carrier, the first useful signal takies described N number of symbol.
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, and the second carrier wave is deployed in mandate frequency spectrum, and described N is the positive integer being not more than X and being not less than X/2.The described present sub-frame of first carrier is configured to descending normal CP and described X is 14, or the described present sub-frame of first carrier is configured to descending expansion CP and described X is 12.Described N number of symbol is continuous print in time domain.
16. equipment according to claim 15, it is characterized in that, described N number of symbol is the non-reserved symbol in front M1 symbol of described present sub-frame, described M1 is an element in Positive Integer Set Z1, described Z1 comprises can carry symbolic number possible in the DwPTS of PDSCH, and described stet is that configured by high-level signaling or empty; Or described N number of symbol is rear M2 symbol of described present sub-frame, and described M2 is an element in Positive Integer Set Z2, and described Z2 comprises symbolic number possible in the PDSCH of normal sub-frames.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522832.XA CN105530080B (en) | 2014-09-30 | 2014-09-30 | LAA transmission methods and device in a kind of cellular communication |
| PCT/CN2015/091015 WO2016050196A2 (en) | 2014-09-30 | 2015-09-29 | Base station for laa transmission in cellular communications, method and device for ue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522832.XA CN105530080B (en) | 2014-09-30 | 2014-09-30 | LAA transmission methods and device in a kind of cellular communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105530080A true CN105530080A (en) | 2016-04-27 |
| CN105530080B CN105530080B (en) | 2018-04-17 |
Family
ID=55631714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410522832.XA Active CN105530080B (en) | 2014-09-30 | 2014-09-30 | LAA transmission methods and device in a kind of cellular communication |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105530080B (en) |
| WO (1) | WO2016050196A2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017198021A1 (en) * | 2016-05-15 | 2017-11-23 | 上海朗帛通信技术有限公司 | Wireless communication method and device |
| CN107466110A (en) * | 2016-06-06 | 2017-12-12 | 北京三星通信技术研究有限公司 | A kind of sending method of upward signal, user equipment |
| WO2018095199A1 (en) * | 2016-11-27 | 2018-05-31 | 上海朗帛通信技术有限公司 | Method and device in radio communications |
| CN108616998A (en) * | 2016-12-09 | 2018-10-02 | 上海朗帛通信技术有限公司 | A kind of method and apparatus in UE and base station |
| CN109391300A (en) * | 2017-08-11 | 2019-02-26 | 上海朗帛通信技术有限公司 | A kind of user equipment for wireless communication, the method and apparatus in base station |
| CN109997402A (en) * | 2017-06-26 | 2019-07-09 | 华为技术有限公司 | A kind of sending method and equipment of the upstream data based on authorization auxiliary access system |
| TWI728796B (en) * | 2019-05-03 | 2021-05-21 | 聯發科技股份有限公司 | Methods for physical downlink control channel monitoring and an apparatus thereof |
| TWI729299B (en) * | 2017-06-29 | 2021-06-01 | 美商高通公司 | Dynamic reclamation of resources reserved for forward compatibility |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10512033B2 (en) * | 2015-01-29 | 2019-12-17 | Qualcomm Incorporated | Timing information for discovery in unlicensed spectrum |
| CN107787005B (en) * | 2016-08-26 | 2023-04-07 | 北京三星通信技术研究有限公司 | Method for monitoring link quality and corresponding user equipment |
| CN111586877A (en) | 2018-02-13 | 2020-08-25 | 上海朗帛通信技术有限公司 | Method and device in communication node for wireless communication |
| CN115665873A (en) * | 2018-06-11 | 2023-01-31 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010044632A3 (en) * | 2008-10-15 | 2010-07-15 | 엘지전자주식회사 | Communications method and device in a multi-carrier system |
| US20130163447A1 (en) * | 2011-12-21 | 2013-06-27 | Renesas Mobile Corporation | Apparatuses and methods in relation to sensing operation in a carrier aggregation scenario |
| US8626219B2 (en) * | 2010-02-16 | 2014-01-07 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting and receiving data over carrier component in a multi-carrier mobile communication system |
| CN103687032A (en) * | 2012-09-24 | 2014-03-26 | 电信科学技术研究院 | Method for selecting main carrier and device |
-
2014
- 2014-09-30 CN CN201410522832.XA patent/CN105530080B/en active Active
-
2015
- 2015-09-29 WO PCT/CN2015/091015 patent/WO2016050196A2/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010044632A3 (en) * | 2008-10-15 | 2010-07-15 | 엘지전자주식회사 | Communications method and device in a multi-carrier system |
| US8626219B2 (en) * | 2010-02-16 | 2014-01-07 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting and receiving data over carrier component in a multi-carrier mobile communication system |
| US20130163447A1 (en) * | 2011-12-21 | 2013-06-27 | Renesas Mobile Corporation | Apparatuses and methods in relation to sensing operation in a carrier aggregation scenario |
| CN103687032A (en) * | 2012-09-24 | 2014-03-26 | 电信科学技术研究院 | Method for selecting main carrier and device |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017198021A1 (en) * | 2016-05-15 | 2017-11-23 | 上海朗帛通信技术有限公司 | Wireless communication method and device |
| CN107466110A (en) * | 2016-06-06 | 2017-12-12 | 北京三星通信技术研究有限公司 | A kind of sending method of upward signal, user equipment |
| US11711801B2 (en) | 2016-06-06 | 2023-07-25 | Samsung Electronics Co., Ltd. | Method and user equipment for transmitting uplink signals |
| US11051325B2 (en) | 2016-06-06 | 2021-06-29 | Samsung Electronics Co., Ltd. | Method and user equipment for transmitting uplink signals |
| US10925020B2 (en) | 2016-11-27 | 2021-02-16 | Shanghai Langbo Communication Technology Company Limited | Method and device for wireless communication |
| WO2018095199A1 (en) * | 2016-11-27 | 2018-05-31 | 上海朗帛通信技术有限公司 | Method and device in radio communications |
| CN108123782A (en) * | 2016-11-27 | 2018-06-05 | 上海朗帛通信技术有限公司 | A kind of method and apparatus in wireless communication |
| US11665037B2 (en) | 2016-11-27 | 2023-05-30 | Shanghai Langbo Communication Technology Company Limiied | Method and device for wireless communication |
| CN108616998A (en) * | 2016-12-09 | 2018-10-02 | 上海朗帛通信技术有限公司 | A kind of method and apparatus in UE and base station |
| US11343850B2 (en) | 2016-12-09 | 2022-05-24 | Shanghai Langbo Communication Technology Company Limited | Method and device in UE and base station |
| CN109997402A (en) * | 2017-06-26 | 2019-07-09 | 华为技术有限公司 | A kind of sending method and equipment of the upstream data based on authorization auxiliary access system |
| TWI729299B (en) * | 2017-06-29 | 2021-06-01 | 美商高通公司 | Dynamic reclamation of resources reserved for forward compatibility |
| US11582833B2 (en) | 2017-06-29 | 2023-02-14 | Qualcomm Incorporated | Dynamic reclamation of resources reserved for forward compatibility |
| CN109391300B (en) * | 2017-08-11 | 2021-01-26 | 上海朗帛通信技术有限公司 | Method and device in user equipment and base station for wireless communication |
| CN109391300A (en) * | 2017-08-11 | 2019-02-26 | 上海朗帛通信技术有限公司 | A kind of user equipment for wireless communication, the method and apparatus in base station |
| TWI728796B (en) * | 2019-05-03 | 2021-05-21 | 聯發科技股份有限公司 | Methods for physical downlink control channel monitoring and an apparatus thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105530080B (en) | 2018-04-17 |
| WO2016050196A2 (en) | 2016-04-07 |
| WO2016050196A3 (en) | 2016-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102194933B1 (en) | Method for transmitting and receiving signals in wireless communication system and apparatus therefor | |
| CN105530080A (en) | LAA transmission method and device in cellular communication | |
| CN102036297B (en) | Method and equipment for transmitting PDCCH, method and equipment for detecting PDCCH, and system | |
| US9860914B2 (en) | Handling FDD and TDD timing offset in FDD and TDD CA in LTE | |
| EP2822331B1 (en) | Information transmission method and base station | |
| CN103220070B (en) | The sending method and user equipment of a kind of upward signal | |
| WO2017183252A1 (en) | Terminal apparatus, base station apparatus, and communication method | |
| WO2014119847A1 (en) | Method for transmitting and receiving mbsfn sub-frame and apparatus therefor | |
| WO2014193068A1 (en) | Method and device for decoding downlink data | |
| EP2674009B1 (en) | Method of transmitting random access response signal in wireless communication system and apparatus thereof | |
| US10756937B2 (en) | Method for configuring reference signal for V2V communication in wireless communication system, and apparatus therefor | |
| WO2016153250A1 (en) | Method and device for transmitting and receiving data using non-orthogonal multiple access in wireless communication system | |
| US9473965B2 (en) | Method for monitoring downlink control channel in wireless communication system, and apparatus therefor | |
| CN105580467A (en) | Terminal apparatus, base station apparatus, communication system, communication method, and integrated circuit | |
| CN103875201A (en) | Method and apparatus for transmitting channel state information in wireless communication system | |
| CN105637782A (en) | The method and apparatus for wireless communication | |
| KR102246695B1 (en) | A method of performing V2X communication performed by a V2X terminal in a wireless communication system and a terminal using the method | |
| CN105580288A (en) | Method for determining validity of scheduling information in wireless communication system supporting usage change of wireless resource and apparatus therefor | |
| CN105306180A (en) | LAA (License Assisted Access) communication method and device | |
| CN104081698B (en) | Method for transceiving downlink control channel in wireless communication system and apparatus therefor | |
| US20190222460A1 (en) | Method for electricity measurement for v2v communications in wireless communication system, and device for same | |
| CN105991274B (en) | Method, feedback information transmission method and the relevant device of data transmission | |
| EP3334233B1 (en) | Terminal device, communication method, and integrated circuit | |
| CN113826437A (en) | Method for transmitting and receiving signal in wireless communication system and apparatus for supporting the same | |
| CN105681006A (en) | LAA communication method and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |