CN105681006A - LAA communication method and apparatus - Google Patents
LAA communication method and apparatus Download PDFInfo
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- CN105681006A CN105681006A CN201410663131.8A CN201410663131A CN105681006A CN 105681006 A CN105681006 A CN 105681006A CN 201410663131 A CN201410663131 A CN 201410663131A CN 105681006 A CN105681006 A CN 105681006A
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Abstract
The invention provides an LAA communication method and apparatus. A base station sends a first wireless signal in a first step and sends a second wireless signal in a second step. Wherein, the second wireless signal is transmitted on a first carrier, and the first carrier is deployed on an unauthorized spectrum. The transmission format of the first wireless signal employs the transmission format of a cellular network, and the transmission format of the second wireless signal employs the transmission format of CTS. The first wireless signal indicates the identification information of the second wireless signal. The second wireless signal indicates the length of a first time window. By adopting the LAA communication method and apparatus provided by the invention, an uplink signal is guaranteed to be not interfered by the signal of an adjacent LBT node, and meanwhile, the problem that UE fails to carry out uplink transmission due to the detection of the CTS is avoided. The LAA communication method and apparatus provided by the invention are also suitable for avoiding the downlink interference caused by the inconsistency of the sending power in downlink sub-frames. In addition, the LAA communication method and apparatus provided by the invention is compatible with the existing LTE standard as much as possible, thereby having good compatibility.
Description
Technical field
The present invention relates to the scheme utilizing unlicensed spectrum to communicate in wireless communication system, particularly relate to the communication means for unlicensed spectrum (UnlicensedSpectrum) based on LTE (LongTermEvolution, Long Term Evolution) and device.
Background technology
Traditional 3GPP (3rdGenerationPartnerProject, third generation partner program) in LTE system, data transmission can only occur on mandate frequency spectrum, sharply increase however as portfolio, especially in some urban areas, frequency spectrum is authorized to be likely difficult to the demand meeting portfolio. 62 plenary sessions of 3GPPRAN discuss a new research topic, namely the research (RP-132085) that unlicensed spectrum is comprehensive, the dependent (Non-standalone) that main purpose is research and utilization LTE 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 reuse the CA (CarrierAggregation in existing system as far as possible, carrier aggregation) concept, namely it is deployed in and authorizes the Serving cell on frequency spectrum as Pcell (PrimaryCell, main plot), it is deployed in the Serving cell in unlicensed spectrum as Scell (SecondaryCell, secondary cell). For unlicensed spectrum, it is contemplated that its interference level uncontrollable/prediction, LTE be likely in unlicensed spectrum adopt LBT (ListenBeforeTalk first intercepts and sends afterwards) to avoid interference. LBT and base station or UE (UserEquipment, subscriber equipment) before sending signal, first listen to the reception power in unlicensed spectrum, if according to described reception power is determined does not interfere with source in described unlicensed spectrum, in described unlicensed spectrum, then send signal, otherwise do not send signal. In RAN#64 plenary session (seminar), the communication in unlicensed spectrum is LAA (LicenseAssistedAccess authorizes frequency spectrum auxiliary to access) by Uniform Name.
Unlicensed spectrum is likely to be operated in TDD (TimeDivisionDuplex, time division duplex) pattern, and namely unlicensed spectrum is used for transmitting downlink and uplink wireless signal. Owing to the maximum transmit power of UE is generally much smaller than the maximum transmit power of base station (even micro-base station), the received signal power detected at sub-frame of uplink and descending sub frame when the LBT node (Wifi equipment or LAA base station) of target BS vicinity performs LBT operation may differ by very big (base station disturbing much larger than the UE interference to base station base station), therefore contiguous LBT node be likely to the sub-frame of uplink of TDDLAA as can sending time slots start to send data, thus the uplink receiving of target BS is caused bigger interference.Further, (the belonging to same Channel holding time) descending sub frame after described sub-frame of uplink, target BS and LBT node are likely to all continue to send wireless signal, produce descending interference.
For the problems referred to above, the method and apparatus that the invention discloses a kind of LAA communication.
Summary of the invention
The invention discloses a kind of method in base station, wherein, comprise the steps:
-step A. sends the first wireless signal
-step B. sends the second wireless signal
Wherein, the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of Cellular Networks, and the transformat of the second wireless signal adopts the transformat of CTS (ClearToSend, request sends). First wireless signal indicates the identification information of the second wireless signal. The length of the second wireless signal instruction very first time window.
CTS is MAC (Access Control in the middle of the MediumAccessControl) frame of definition in protocol of wireless local area network. The transformat of described second wireless signal adopts the transformat (including the form of physical layer frame structure) of CTS, namely the second wireless signal is detectable for traditional WLAN (WirelessLocalAreaNetwork, WLAN) equipment and is CTS by traditional wlan device identification.
As an embodiment, the first wireless signal transmits on first carrier. As an embodiment, the first wireless signal transmits on a second carrier, and the second carrier wave is deployed in mandate frequency spectrum.
As an embodiment, the first wireless signal is LTE high-level signaling. As an embodiment, described identification information is by the RA (ReceivingAddress of the corresponding CTS in the second wireless signal, receive address) indicated by whole bits in territory, or indicated by (end) partial bit in the RA territory of the corresponding CTS in the second wireless signal. As an embodiment, described identification information includes at least one of:
-. described base station operator identifies
-. physical cell identity
-. the mid frequency of the PCell (PrimaryCell, main plot) that first carrier is corresponding, described Pcell is deployed in mandate frequency spectrum.
As an embodiment, the transmission cut-off time of the second wireless signal is the cut-off time of the wideband symbol in the LTE radio frames of the configuration on first carrier, described wideband symbol is (in descending sub frame) OFDM (OrthogonalFrequencyDivisionMultiplexing, OFDM) symbol or (in sub-frame of uplink) SC-FDMA (SingleCarrierFrequencyDivisionMultiAccess, single-carrier frequency division multiple access) symbol, described wideband symbol includes corresponding CP (CyclicPrefix, Cyclic Prefix).
As an embodiment, the initial time of very first time window is the transmission cut-off time of the second wireless signal.
The essence of said method is that LTE community sends CTS reservation very first time window, and the Wifi equipment receiving CTS does not send signal in very first time window. And for the UE (being likely to be equipped with Wifi module) under described LTE MPS process, then can judging that very first time window is to reserve to do uplink signal transmissions purposes (being likely to also include downstream signal transmission) according to described identification information, namely described UE can send upward signal in very first time window. Said method ensure that upward signal is not by the signal disturbing of adjacent base station, avoids (being likely to be equipped with Wifi module) UE problem that cannot be carried out up transmission because CTS (the second wireless signal) being detected simultaneously.
Concrete, according to an aspect of the present invention, it is characterised in that also comprise the steps:
-step C. receives upward signal in the very first time window of first carrier.
Described upward signal refers to that UE is sent to the signal of base station.
Concrete, according to an aspect of the present invention, it is characterised in that described step B also comprises the steps:
-step B0. sends downstream signal in the second time window of first carrier
As an embodiment, the cut-off time of the second time window is the delivery time of the second wireless signal.
As an embodiment, the second time window is a part for very first time window. The essence of the present embodiment is the described base station reservation subframe for downstream signal transmission, when described base station side causes the transmit power between descending sub frame to change greatly because performing descending power distribution, described base station may be adopted the subframe of less transmit power thinks it is " free time " subframe by mistake by the LBT node of described base station vicinity, and then sends wireless signal in described " free time " subframe and produce interference. The present embodiment helps avoid the generation of this interference.
As an embodiment, the delivery time of the second wireless signal is the initial time of subframe on first carrier. As an embodiment, described base station part-time section in the second time window sends downstream signal, keeps zero transmit power in all the other time periods.
Concrete, according to an aspect of the present invention, it is characterised in that very first time window includes at least one of:
-. the persistent period of K2 wideband symbol of the transmission subframe afterbody of the second wireless signal
-. the 1-K1 subframe after the transmission subframe of the second wireless signal
-. the persistent period of K3 wideband symbol of the K1+1 after the transmission subframe of the second wireless signal sub-frame header.
Wherein, very first time window is continuous print in time, and described K1 is positive integer, and described K2 is less than the positive integer of X-1, and described K3 is less than the positive integer of X-1, and described X is the wideband symbol number that first carrier is taken in previous subframe.
As an embodiment, described wideband symbol is OFDM symbol. As an embodiment, described wideband symbol is SC-FDMA symbol. Described wideband symbol includes corresponding CP (if described wideband symbol is last wideband symbol of subframe, it is 1/30720 millisecond that described wideband symbol also includes the protection interval-described Ts of 16 Ts).
As an embodiment, described base station CP form on first carrier is common CP, and described X is 14. As an embodiment, described base station CP form on first carrier is extension CP, and described X is 12.
As an embodiment, the transmission initial time of first wideband symbol after the transmission cut-off time that the initial time of very first time window is the second wireless signal. As an embodiment, the corresponding unit being used for indicating the bit of the length of very first time window in the second wireless signal is microsecond, and the total length of the wideband symbol included by very first time window rounds up in units of delicate.
Concrete, according to an aspect of the present invention, it is characterised in that described step A also comprises the steps:
-step A0. sends downlink signaling instruction { described K1, described K2, at least one in described K3}.
As an embodiment, described downlink signaling is high-level signaling, described downlink signaling instruction { described K1, described K2, described K3}. As an embodiment, described downlink signaling is the DCI (DownlinkControlInformation, Downlink Control Information) for the transmission of dispatching uplink signal, and described downlink signaling indicates described K2.As an embodiment, described downlink signaling is the DCI for the transmission of dispatching uplink signal, and described downlink signaling indicates described K3.
Concrete, according to an aspect of the present invention, it is characterised in that in the second wireless signal, the partial bit in the bit receiving address field of corresponding CTS is used for indicating described identification information.
As an embodiment, the value of all the other bits removing described partial bit in the bit receiving address field of corresponding CTS in the second wireless signal is fixing. As an embodiment, all the other bits removing described partial bit in the second wireless signal in the bit receiving address field of corresponding CTS are redefined as information bit. As an embodiment, the afterbody receiving address field of described partial bit correspondence CTS.
The invention discloses a kind of method in UE, wherein, comprise the steps:
-step A. receives the first wireless signal
-step B. receives the second wireless signal
Wherein, the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of Cellular Networks, and the transformat of the second wireless signal adopts the transformat of CTS. First wireless signal indicates the identification information of the second wireless signal. The length of the second wireless signal instruction very first time window.
As an embodiment, described identification information includes at least one of:
-. the MCC (MobileCountryCode, Mobile Country Code MCC) of the Serving cell operator of described UE
-. the MNC (MobileNetworkCode, Mobile Network Code) of the Serving cell operator of described UE
-. the physical cell identity (PCI-PhysicalCellIdentification) of the Serving cell of described UE
-. the mid frequency of the PCell that first carrier is corresponding.
As an embodiment, the initial time of very first time window is the transmission initial time of the second wireless signal.
Concrete, according to an aspect of the present invention, it is characterised in that also comprise the steps:
-step C. sends upward signal in the very first time window of first carrier.
Described upward signal is the UE signal being sent to base station.
Concrete, according to an aspect of the present invention, it is characterised in that described step B also comprises the steps:
-step B0. receives downstream signal in the second time window of first carrier
As an embodiment, the cut-off time of the second time window is the delivery time of the second wireless signal. As an embodiment, the second time window is a part for very first time window.
As an embodiment, the delivery time of the second wireless signal is the initial time of subframe on first carrier. As an embodiment, described base station part-time section in the second time window sends downstream signal, keeps zero transmit power in all the other time periods.
Concrete, according to an aspect of the present invention, it is characterised in that very first time window includes at least one of:
-. the persistent period of K2 wideband symbol of the transmission subframe afterbody of the second wireless signal
-. the 1-K1 subframe after the transmission subframe of the second wireless signal
-. the persistent period of K3 wideband symbol of the K1+1 after the transmission subframe of the second wireless signal sub-frame header.
Wherein, very first time window is continuous print in time, and described K1 is positive integer, and described K2 is less than the positive integer of X-1, and described K3 is less than the positive integer of X-1, and described X is the wideband symbol number that first carrier is taken in previous subframe.
As an embodiment, the corresponding unit being used for indicating the bit of the length of very first time window in the second wireless signal is microsecond, and the total length of the wideband symbol included by very first time window rounds up in units of delicate.
Concrete, according to an aspect of the present invention, it is characterised in that described step A also comprises the steps:
-step A0. receives downlink signaling and determines { described K1, described K2, at least one in described K3}.
Concrete, according to an aspect of the present invention, it is characterised in that in the second wireless signal, the partial bit in the bit receiving address field of corresponding CTS is used for indicating described identification information.
The invention discloses a kind of base station equipment, it is characterised in that this equipment includes:
First module: be used for sending the first wireless signal
Second module: be used for sending the second wireless signal
Three module: for receiving upward signal in the very first time window of first carrier.
Wherein, the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of Cellular Networks, and the transformat of the second wireless signal adopts the transformat of CTS. First wireless signal indicates the identification information of the second wireless signal. The length of the second wireless signal instruction very first time window.
As an embodiment, the said equipment is characterised by, the second module is additionally operable in the second time window of first carrier to send downstream signal. Wherein, the cut-off time of the second time window is the delivery time of the second wireless signal, or the second time window is a part for very first time window.
As an embodiment, the said equipment is characterised by, the first module is additionally operable to send downlink signaling instruction { described K1, described K2, at least one in described K3}.
The invention discloses a kind of subscriber equipment, it is characterised in that this equipment includes:
First module: be used for receiving the first wireless signal
Second module: be used for receiving the second wireless signal
Three module: for sending upward signal in the very first time window of first carrier.
Wherein, the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of Cellular Networks, and the transformat of the second wireless signal adopts the transformat of CTS. First wireless signal indicates the identification information of the second wireless signal. The length of the second wireless signal instruction very first time window.
As an embodiment, the said equipment is characterised by, the second module is additionally operable in the second time window of first carrier to receive downstream signal. Wherein, the cut-off time of the second time window is the delivery time of the second wireless signal, or the second time window is a part for very first time window.
As an embodiment, the said equipment is characterised by, the first module is additionally operable to receive downlink signaling and determines { described K1, described K2, at least one in described K3}.
For TDDLAA, the received signal power detected at sub-frame of uplink and descending sub frame when the LBT node of target BS vicinity performs LBT may differ by very big, and therefore contiguous LBT node is likely to take the sub-frame of uplink of TDDLAA, thus causing bigger interference. For the problems referred to above, the method and apparatus that the invention discloses a kind of LAA communication, base station sends CTS and preengages sub-frame of uplink (being likely to also include descending sub frame). Present invention ensures that upward signal is not by the signal disturbing of adjacent LBT node, avoids (being likely to be equipped with Wifi module) UE problem that cannot be carried out up transmission because CTS (the second wireless signal) being detected simultaneously.It is suitable for avoid descending interference that is inconsistent due to the transmit power in descending sub frame and that produce. Additionally, the compatible as far as possible existing LTE standard of the present invention, there is good compatibility.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is made made with reference to the following drawings, the other features, objects and advantages of the present invention will become more apparent:
Fig. 1 illustrates the transfer process figure of upward signal according to an embodiment of the invention;
Fig. 2 illustrates transmission time sequence figure according to an embodiment of the invention;
Fig. 3 illustrates transmission time sequence figure according to still another embodiment of the invention;
Fig. 4 illustrates the structure chart of the CTSMAC frame in the second wireless signal according to an embodiment of the invention;
Fig. 5 illustrates the structured flowchart processing device in base station according to still another embodiment of the invention;
Fig. 6 illustrates the structured flowchart processing device in UE according to an embodiment of the invention;
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme being described in further detail, it is necessary to explanation, when not conflicting, embodiments herein and the feature in embodiment can arbitrarily be mutually combined.
Embodiment 1
Embodiment 1 illustrates the transfer process figure of upward signal, as shown in Figure 1. In accompanying drawing 1, base station N1 is the serving BS of UEU2, and LBT node N3 is the communication equipment that can demodulate CTS near the N1 of base station. Wherein in square frame F1, the step of mark is optional step.
For base station N1, send the first wireless signal in step slo; Send the second wireless signal in step s 11; Upward signal is received in step s 12 in the very first time window of first carrier; Downstream signal is sent in step s 13 in the second time window of first carrier.
For UEU2, step S20 receives the first wireless signal; Receive the second wireless signal in the step s 21; Step S22 sends upward signal in the very first time window of first carrier; Step S23 receives downstream signal in the second time window of first carrier.
LBT node N3 keeps zero transmit power after receiving CTS in very first time window.
In embodiment 1, the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of Cellular Networks, and the transformat of the second wireless signal adopts the transformat of CTS. First wireless signal indicates the identification information of the second wireless signal. The length of the second wireless signal instruction very first time window. The cut-off time of the second time window is the delivery time of the second wireless signal, or the second time window is a part for very first time window.
As the sub-embodiment 1 of embodiment 1, the first wireless signal is being deployed on the second carrier wave authorizing frequency spectrum and is transmitting, and the first wireless signal includes following at least one:
-.PhysCellIdIE (InfomrationElement, information unit)
-.PLMN-IdentityIE
-. being used for indicating the high-level signaling of specific ID (Identification, mark), described specific ID is made up of 24 bits.
The bit instruction at least one of in the RA territory of corresponding CST in second wireless signal:
-.PhysCellIdIE
-.PLMN-IdentityIE
-. described specific ID.
As the sub-embodiment 2 of embodiment 1, first carrier is configured to normally (Normal) CP by base station N1, and very first time window includes at least one of:
-. the persistent period of K2 wideband symbol of the transmission subframe afterbody of the second wireless signal
-. the 1-K1 subframe after the transmission subframe of the second wireless signal
-. the persistent period of K3 wideband symbol of the K1+1 after the transmission subframe of the second wireless signal sub-frame header.
Wherein, very first time window is continuous print in time, and described K1 is positive integer, and described K2 is less than the positive integer of 13, and described K3 is less than the positive integer of 13. The persistent period of described wideband symbol is 2192Ts (if described wideband symbol is the wideband symbol in a subframe outside first wideband symbol and last wideband symbol) or 2208Ts (if described wideband symbol is first wideband symbol or last wideband symbol in a subframe), and described Ts is 1/30720 millisecond.
As the sub-embodiment 3 of embodiment 1, the second wireless signal transmits in a corresponding wideband symbol on first carrier.
As the sub-embodiment 4 of embodiment 1, the first wireless signal transmits on first carrier.
Embodiment 2
Embodiment 2 illustrates the transmission time sequence figure in the present invention, as shown in Figure 2. In accompanying drawing 2, the grid of oblique line mark is the time that the second wireless signal takies, and the grid of backslash mark is protection interval, and the grid of bold box mark is very first time window, and the grid of reticule mark is the second time window, and wherein the second time window is optional. Subframe timing describes the initial time of the LTE subframe that base station configures on first carrier.
First base station sends the first wireless signal and the second wireless signal. First UE receives the first wireless signal and the second wireless signal.
In embodiment 2, the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of LTE, and the transformat of the second wireless signal adopts the transformat of CTS. First wireless signal indicates the identification information of the second wireless signal. The length of the second wireless signal instruction very first time window. Base station keeps zero transmit power in protection interval, and UE performs channel-monitoring operation to determine whether to send upward signal after protection interval in the time period of half. The initial delivery time of very first time window is the cut-off delivery time of the second wireless signal.
As the sub-embodiment 1 of embodiment 2, then base station removes (i.e. the blank parts of very first time window and reticule identification division in accompanying drawing 2) in protection interlude section in the very first time window of first carrier and receives upward signal. Then UE removes (i.e. the blank parts of very first time window and reticule identification division in accompanying drawing 2) in protection interlude section in the very first time window of first carrier and sends upward signal. Described upward signal is likely to only take up a subframe, and the part resource namely removed in very first time window in protection interlude section is idle.
Sub-embodiment 2 as embodiment 2; then base station removes (i.e. the blank parts of very first time window in accompanying drawing 2) in protection interlude section in the very first time window of first carrier and receives upward signal, then sends downstream signal in second time window (i.e. the reticule identification division of very first time window in accompanying drawing 2) of first carrier. Wherein, the second time window is positioned at the afterbody of very first time window.
As the sub-embodiment 3 of embodiment 2, very first time window includes:
-. the persistent period of K2 wideband symbol of transmission subframe (the subframe #i in the accompanying drawing 2) afterbody of the second wireless signal
-. the 1-K1 the subframe (the subframe #i+1 in accompanying drawing 2, subframe #i+2, subframe #i+3, subframe #i+4) after the transmission subframe of the second wireless signal
-. the persistent period of K3 wideband symbol of the K1+1 subframe (the subframe #i+5 in the accompanying drawing 2) head after the transmission subframe of the second wireless signal.
Wherein, very first time window is continuous print in time, and described K1 is positive integer, and described K2 is less than the positive integer of X-1, and described K3 is less than the positive integer of X-1, and described X is the wideband symbol number that first carrier is taken in previous subframe.
Sub-embodiment 4 as embodiment 3, the corresponding unit being used for indicating the bit of the length of very first time window in second wireless signal is microsecond, the value of described bit be the total length of the wideband symbol included by very first time window round up in units of delicate (corresponding embodiment 1, the value of described bit is:Millisecond, wherein Ts is 1/30720 millisecond,It is no less than the smallest positive integral of Z).
As the sub-embodiment 5 of embodiment 2, the persistent period at described protection interval is equal to the persistent period of positive integer wideband symbol. Described protection interval is used for absorbing descending propagation delay, and provide UE perform LBT operation required intercept time slot.
As the sub-embodiment 6 of embodiment 2, base station sends uplink scheduling DCI (upward signal for dispatching in subframe #i sends), and UE receives described uplink scheduling DCI. Described uplink scheduling DCI indicates described K2.
As the sub-embodiment 7 of embodiment 2, base station sends uplink scheduling DCI (upward signal for dispatching in subframe #i+5 sends), and UE receives described uplink scheduling DCI. Described uplink scheduling DCI indicates described K3.
Embodiment 3
Embodiment 3 illustrates the transmission time sequence figure in the present invention, as shown in Figure 3. In accompanying drawing 3, the grid of oblique line mark is the time that the second wireless signal takies, and the grid of backslash mark is protection interval, and the grid of bold box mark is very first time window, and the grid of reticule mark is the second time window. Subframe timing describes the initial time of the LTE subframe that base station configures on first carrier.
First base station sends the first wireless signal and the second wireless signal and downstream signal, then removes (i.e. the blank parts of very first time window in accompanying drawing 3) on the time period of protection interval and the second time window in the very first time window of first carrier and receives upward signal.
First UE receives the first wireless signal and the second wireless signal and downstream signal, then removes (i.e. the blank parts of very first time window in accompanying drawing 2) in protection interlude section in the very first time window of first carrier and sends upward signal.
In embodiment 3, the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of Cellular Networks, and the transformat of the second wireless signal adopts the transformat of CTS. First wireless signal indicates the identification information of the second wireless signal. The length of the second wireless signal instruction very first time window. Base station keeps zero transmit power in protection interval, and UE performs channel-monitoring operation to determine whether to send upward signal after protection interval in the time period of half. The initial delivery time of very first time window is the cut-off delivery time of the second wireless signal. Described downstream signal sends out transmission in the second time window. Second time window is positioned at the head (can reduce descending/up switching point number of times) of very first time window.
As the sub-embodiment 1 of embodiment 3, first wireless signal the second time window on first carrier transmits.
As the sub-embodiment 2 of embodiment 3, the cut-off time (so that base station can start the transmission of follow-up LTE signal immediately) of the wideband symbol sent in cut-off time correspondence subframe #i of the second wireless signal.
Embodiment 4
Embodiment 4 illustrates the structure chart of the CTSMAC frame in the second wireless signal, as shown in Figure 4. In accompanying drawing 4, the CTSMAC frame in secondary signal includes 14 i.e. 112 bits of byte altogether, and the frame including 16 bits controls territory, the duration field of 16 bits, the reception address field of 48 bits, the Frame Check Sequence territory of 32 bits.
The bit of duration field is used for indicating very first time window, the bit receiving address field includes two parts, i.e. all the other bits and partial bit, wherein said partial bit is for indicating the identification information of the second wireless signal, all the other bits described are fixing, or for redefining (for carrying downlink information) bit.
As the sub-embodiment 1 of embodiment 4, described partial bit includes 29 bits receiving address field end, for indicating the PCI and (affiliated) PLMN that send community of the second wireless signal. All the other bits described include 19 bits receiving address field head.
Embodiment 5
Embodiment 5 illustrates the structured flowchart processing device in a base station, as shown in Figure 5. In accompanying drawing 5, process device 200 and be made up of sending module 301, sending module 302 and receiver module 303.
Sending module 301 is used for sending the first wireless signal; Sending module 302 is used for sending the second wireless signal; Receiver module 303 for receiving upward signal in the very first time window of first carrier.
In embodiment 5, the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of Cellular Networks, and the transformat of the second wireless signal adopts the transformat of CTS. First wireless signal and the second wireless signal include common identification information. The length of the second wireless signal instruction very first time window. The transformat of described Cellular Networks includes the { one in LTE, WCDMA, TD-SCDMA, CDMA2000}.
As the sub-embodiment 1 of embodiment 5, sending module 301 is additionally operable to send downlink signaling instruction { described K1, described K2, at least one in described K3}.
As the sub-embodiment 2 of embodiment 5, sending module 302 is additionally operable in the second time window of first carrier to send downstream signal. Wherein, the cut-off time of the second time window is the delivery time of the second wireless signal, or the second time window is a part for very first time window head, or the second time window is a part for very first time window afterbody.
As the sub-embodiment 3 of embodiment 5, very first time window includes at least one of:
-. the persistent period of K2 wideband symbol of the transmission subframe afterbody of the second wireless signal
-. the 1-K1 subframe after the transmission subframe of the second wireless signal
-. the persistent period of K3 wideband symbol of the K1+1 after the transmission subframe of the second wireless signal sub-frame header.
Wherein, very first time window is continuous print in time, and described K1 is positive integer, and described K2 is less than the positive integer of X-1, and described K3 is less than the positive integer of X-1, and described X is the wideband symbol number that first carrier is taken in previous subframe. Described K2 and described K3's and equal to described X.
As the sub-embodiment 4 of embodiment 5, described base station possesses the Wifi module for receiving and dispatching Wifi signal, and sending module 202 is a part for described Wifi module.
As the sub-embodiment 5 of embodiment 5, the initial delivery time of very first time window is the cut-off delivery time of the second wireless signal.
Embodiment 6
Embodiment 6 illustrates the structured flowchart processing device in UE, as shown in Figure 6. In accompanying drawing 6, process device 300 and be made up of receiver module 301, receiver module 302 and sending module 303.
Receiver module 301 is used for receiving the first wireless signal; Receiver module 302 is used for receiving the second wireless signal; Sending module 303 for sending upward signal in the very first time window of first carrier.
In embodiment 6, the first wireless signal transmits on first carrier, and the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of Cellular Networks, and the transformat of the second wireless signal adopts the transformat of CTS. First wireless signal indicates the identification information of the second wireless signal. The length of the second wireless signal instruction very first time window.
As the sub-embodiment 1 of embodiment 6, receiver module 302 is additionally operable in the second time window of first carrier to receive downstream signal. Wherein, the cut-off time of the second time window is the delivery time of the second wireless signal, or the second time window is a part for very first time window head, or the second time window is a part for very first time window afterbody.
As the sub-embodiment 2 of embodiment 6, receiver module 301 is additionally operable to receive downlink signaling and determines { described K1, described K2, at least one in described K3}.
As the sub-embodiment 3 of embodiment 6, described UE possesses the Wifi module for receiving and dispatching Wifi signal, and receiver module 302 is a part for described Wifi module.
One of ordinary skill in the art will appreciate that all or part of step in said method can be carried out instruction related hardware by program and complete, described program can be stored in computer-readable recording medium, such as read only memory, hard disk or CD etc. Optionally, all or part of step of above-described embodiment can also use one or more integrated circuit to realize. Accordingly, each modular unit in above-described embodiment, it is possible to adopt example, in hardware to realize, it is also possible to being 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 presently preferred embodiments of the present invention, is not intended to limit protection scope of the present invention. All within the spirit and principles in the present invention, any amendment made, equivalent replace, improvement etc., should be included within protection scope of the present invention.
Claims (16)
1. the method in base station, wherein, comprises the steps:
-step A. sends the first wireless signal
-step B. sends the second wireless signal.
Wherein, the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of Cellular Networks, and the transformat of the second wireless signal adopts the transformat of CTS. First wireless signal indicates the identification information of the second wireless signal. The length of the second wireless signal instruction very first time window.
2. method according to claim 1, it is characterised in that also comprise the steps:
-step C. receives upward signal in the very first time window of first carrier.
3. the method according to claim 1, described in 2, it is characterised in that described step B also comprises the steps:
-step B0. sends downstream signal in the second time window of first carrier.
Wherein, the cut-off time of the second time window is the delivery time of the second wireless signal, or the second time window is a part for very first time window.
4. the method according to claim 1-3, it is characterised in that very first time window includes at least one of:
-. the persistent period of K2 wideband symbol of the transmission subframe afterbody of the second wireless signal
-. the 1-K1 subframe after the transmission subframe of the second wireless signal
-. the persistent period of K3 wideband symbol of the K1+1 after the transmission subframe of the second wireless signal sub-frame header.
Wherein, very first time window is continuous print in time, and described K1 is positive integer, and described K2 is less than the positive integer of X-1, and described K3 is less than the positive integer of X-1, and described X is the wideband symbol number that first carrier is taken in previous subframe.
5. method according to claim 4, it is characterised in that described step A also comprises the steps:
-step A0. sends downlink signaling instruction { described K1, described K2, at least one in described K3}.
6. the method according to claim 1-5, it is characterised in that in the second wireless signal, the partial bit in the bit receiving address field of corresponding CTS is used for indicating described identification information.
7. the method in UE, wherein, comprises the steps:
-step A. receives the first wireless signal
-step B. receives the second wireless signal.
Wherein, the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of Cellular Networks, and the transformat of the second wireless signal adopts the transformat of CTS. First wireless signal indicates the identification information of the second wireless signal. The length of the second wireless signal instruction very first time window.
8. method according to claim 7, it is characterised in that also comprise the steps:
-step C. sends upward signal in the very first time window of first carrier.
9. the method according to claim 7, described in 8, it is characterised in that described step B also comprises the steps:
-step B0. receives downstream signal in the second time window of first carrier.
Wherein, the cut-off time of the second time window is the delivery time of the second wireless signal, or the second time window is a part for very first time window.
10. the method according to claim 7-9, it is characterised in that very first time window includes at least one of:
-. the persistent period of K2 wideband symbol of the transmission subframe afterbody of the second wireless signal
-. the 1-K1 subframe after the transmission subframe of the second wireless signal
-. the persistent period of K3 wideband symbol of the K1+1 after the transmission subframe of the second wireless signal sub-frame header.
Wherein, very first time window is continuous print in time, and described K1 is positive integer, and described K2 is less than the positive integer of X-1, and described K3 is less than the positive integer of X-1, and described X is the wideband symbol number that first carrier is taken in previous subframe.
11. method according to claim 10, it is characterised in that described step A also comprises the steps:
-step A0. receives downlink signaling and determines { described K1, described K2, at least one in described K3}.
12. the method according to claim 7-11, it is characterised in that in the second wireless signal, the partial bit in the bit receiving address field of corresponding CTS is used for indicating described identification information.
13. a base station equipment, it is characterised in that this equipment includes:
First module: be used for sending the first wireless signal
Second module: be used for sending the second wireless signal
Three module: for receiving upward signal in the very first time window of first carrier.
Wherein, the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of Cellular Networks, and the transformat of the second wireless signal adopts the transformat of CTS. First wireless signal indicates the identification information of the second wireless signal. The length of the second wireless signal instruction very first time window.
14. equipment according to claim 13, it is characterised in that the second module is additionally operable in the second time window of first carrier to send downstream signal.Wherein, the cut-off time of the second time window is the delivery time of the second wireless signal, or the second time window is a part for very first time window.
15. a subscriber equipment, it is characterised in that this equipment includes:
First module: be used for receiving the first wireless signal
Second module: be used for receiving the second wireless signal
Three module: for sending upward signal in the very first time window of first carrier.
Wherein, the second wireless signal transmits on first carrier, and first carrier is deployed in unlicensed spectrum. The transformat of the first wireless signal adopts the transformat of Cellular Networks, and the transformat of the second wireless signal adopts the transformat of CTS. First wireless signal indicates the identification information of the second wireless signal. The length of the second wireless signal instruction very first time window.
16. equipment according to claim 15, it is characterised in that the second module is additionally operable in the second time window of first carrier to receive downstream signal. Wherein, the cut-off time of the second time window is the delivery time of the second wireless signal, or the second time window is a part for very first time window.
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