CN105991254A

CN105991254A - Signal sending method and device

Info

Publication number: CN105991254A
Application number: CN201510040772.2A
Authority: CN
Inventors: 徐汉青; 赵亚军; 莫林梅; 苟伟
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2014-11-07
Filing date: 2015-01-27
Publication date: 2016-10-05
Also published as: WO2016070614A1

Abstract

The present invention discloses a signal sending method and a device, wherein the method and the device are applied to an LAA access point or an LAA base station. The method comprises the steps of determining the configuration information of the short control signaling (SCS) for sending signals during the non-occupied period of an unlicensed carrier wave; and according to the determined configuration information, sending signals through the SCS. According to the embodiments of the invention, the signal sending before the occupation of the unlicensed carrier wave is realized. Therefore, the spectrum usage efficiency and the performance of an LAA system are improved.

Description

A kind of signaling method and device

Technical field

The present invention relates to wireless communication field, particularly relate to a kind of signaling method and device.

Background technology

LTE-U (Long Term Evolution Unlicensed, LTE use unauthorized carrier wave) refers to In unauthorized carrier wave, dispose LTE, be used for meeting the growing capacity requirement of LTE system and improving non- Authorize the service efficiency of frequency spectrum, be LTE and the possible important evolution tendency of future wireless system.? During design LTE-U, require consideration for how and WiFi (Wireless Fidelity, Wireless Fidelity), radar etc. Between different system and LTE-U homologous ray, the fair friendly unauthorized carrier wave of competition carries out data transmission, with Time need do not affect and retain LTE technical characteristic.According to the statement of 3GPP standards meetings, LTE-U system is alternatively referred to as LAA, and (LTE Licensed Assisted Access, LTE authorize photocarrier method to connect Enter) system.

LAA access point or base station are robbed after accounting for resource every time, and community to be carried out discovery, synchronization, uplink/downlink connect Receive and measure, CSI (Channel State Information, channel condition information) feeds back and scheduling etc. Serial procedures, this can take the plenty of time (several ms even count 10ms), say, that LAA accesses Point or base station rob in the time resource accounted for every time quite a few all for process data send beyond behaviour Making, this can reduce frequency spectrum service efficiency and the performance of LAA system greatly.

Summary of the invention

In view of this, for solving the technical problem of existing existence, the embodiment of the present invention provides:

A kind of signaling method, is applied to LTE and authorizes photocarrier method to access LAA access point or LAA base Stand, including:

Determining uses short control signaling SCS to send the configuration information of signal in the unauthorized carrier wave unoccupied phase；

According to the described configuration information determined, SCS is used to send described signal.

In one specific embodiment, the method also includes: sent out by the configuration information that described use SCS sends signal Give other LAA access points or LAA base station,

Described determine the unauthorized carrier wave unoccupied phase use SCS send signal configuration information before, the party Method also includes:

Receive and use SCS to send the configuration information of signal from other LAA access points or LAA base station；

SCS is used to send according to other LAA access points received in the first preset time period or LAA base station The configuration information of signal, it may be judged whether use SCS to send signal, determines when use SCS sends signal, then Perform follow-up flow process, determine the configuration information using short control signaling SCS to send signal.

In one specific embodiment, described determine use SCS to send the joining of signal in the unauthorized carrier wave unoccupied phase Before confidence breath, the method also includes:

Intercept or detect other LAA access points or LAA base station use SCS transmission in the second preset time period The information of signal；

According to the described information intercepted or detect, it may be judged whether use SCS to send signal, determine use SCS When sending signal, then perform follow-up flow process, determine the configuration information using short control signaling SCS to send signal.

In one specific embodiment, described determine use SCS to send the joining of signal in the unauthorized carrier wave unoccupied phase Confidence ceases, including:

Obtain the resource information sent for SCS preset；

Intercept the situation that takies of the described default resource sent for SCS, described default for SCS When the resource sent can carry out signal transmission, use the described default resource transmission letter sent for SCS Number.

In one specific embodiment, the method also includes: to except described default or described determine for SCS Resource outside the resource sent carries out clear channel assessment (CCA) CCA, determines the resource sent for SCS.

In one specific embodiment, the described configuration information determining that use SCS sends signal, including:

According to default selection algorithm, one or more carrier wave is selected to carry out SCS signal transmission.

Send to other one or more LAA access points or LAA base station and coordinate request.

In one specific embodiment, the method also includes:

If described LAA access point or LAA base station do not send business datum in the 3rd preset time period, SCS is then stopped using to send signal, or, adjust the configuration information using SCS to send signal.

In one specific embodiment, the method also includes: LAA access point or LAA base station are using SCS to send out When the configuration information of the number of delivering letters changes, send a notification message to other LAA access points or LAA base station, Carry the configuration information after change.

In one specific embodiment, described signal includes one or more of: the auxiliary synchronization of master sync signal PSS/ Signal SSS, cell special reference CRS, location reference signals PRS, Sounding Reference Signal SRS, Find that signal DRS, channel status instruction reference signal CSI-RS, physical downlink control channel PDCCH are held Information carrying number.

In one specific embodiment, described configuration information includes following one or more: the cycle, biasing, continues Time, port, power, running time-frequency resource.

In one specific embodiment, the method also includes:

In the unauthorized carrier wave unoccupied phase, according to the default cycle, periodically send reference signal,

And/or,

Reference signal is sent in default resource before taking unauthorized carrier wave.

In one specific embodiment, the method also includes:

In the unauthorized carrier occupancy phase, it is continuing with described configuration information and sends signal.

In one specific embodiment, the method also includes:

In the unauthorized carrier occupancy phase, stop sending described signal, or, default resource continues send Described signal.

The embodiment of the present invention also provides for a kind of sender unit, is arranged at LAA access point or LAA base station, This device includes: the first processing module and the first sending module；Wherein,

Described first processing module, uses SCS to send signal for determining in the unauthorized carrier wave unoccupied phase Configuration information；

Described first sending module, for according to the described configuration information determined, uses SCS to send described signal.

In one specific embodiment, this device also includes the second sending module, receiver module and the second processing module； Wherein,

Described second sending module, is sent to other for described use SCS sends the configuration information of signal LAA access point or LAA base station；

Described receiver module, uses SCS to send for receiving from other LAA access points or LAA base station The configuration information of signal；

Described second processing module, for receive in the first preset time period according to receiver module other LAA access point or LAA base station use SCS to send the configuration information of signal, it may be judged whether use SCS to send out The number of delivering letters, determines when use SCS sends signal, reinforms the first processing module and process.

In one specific embodiment, this device also includes the 3rd processing module and fourth processing module,

Described 3rd processing module, be used for intercepting or detect in the second preset time period other LAA access points or LAA base station uses SCS to send the information of signal；

Described fourth processing module, for the information intercepted or detect described in basis, it may be judged whether uses SCS Send signal, determine when use SCS sends signal, reinform the first processing module and process.

In one specific embodiment, described first processing module, specifically for obtaining default sending for SCS Resource information；And intercept the situation that takies of the described default resource sent for SCS, described preset For the resource that SCS sends can carry out signal send time, use described default send for SCS Resource sends signal.

In one specific embodiment, described first processing module, specifically for except described default or described really The fixed resource outside the resource that SCS sends carries out clear channel assessment (CCA) CCA, determines for SCS The resource sent.

In one specific embodiment, described first processing module, specifically for according to the selection algorithm preset, choosing Select one or more carrier wave and carry out SCS signal transmission.

In one specific embodiment, this device also includes the 3rd sending module,

Described 3rd sending module, for sending to other one or more LAA access points or LAA base station Coordinate request.

In one specific embodiment, this device also includes adjusting module,

Described adjusting module, for when current LAA access point or LAA base station are in the 3rd preset time period Do not send business datum, then stop using SCS to send signal, or, adjust and use SCS to send signal Configuration information, to avoid the wasting of resources.

In one specific embodiment, this device also includes the 4th sending module,

Described 4th sending module, for using SCS to send letter at current LAA access point or LAA base station Number configuration information when changing, send a notification message to other LAA access points or LAA base station, take Configuration information after band change.

In one specific embodiment, this device is in the unauthorized carrier wave unoccupied phase, according to default cycle, cycle Property send reference signal, and/or, in the default resource before taking unauthorized carrier wave send reference signal.

In one specific embodiment, this device, in the unauthorized carrier occupancy phase, is continuing with described configuration information and sends out The number of delivering letters.

In one specific embodiment, this device, within the unauthorized carrier occupancy phase, stops sending described signal, or Person, continues to send described signal in default resource.

Signaling method described in the embodiment of the present invention and device, be applied to LAA access point or LAA base Stand, concrete, determine and use short control signaling SCS to send the configuration of signal in the unauthorized carrier wave unoccupied phase Information；According to the described configuration information determined, SCS is used to send described signal.The embodiment of the present invention realizes Send taking the signal before unauthorized carrier wave, it is possible to increase the frequency spectrum service efficiency of LAA system and property Energy.

Accompanying drawing explanation

Fig. 1 is embodiment of the present invention one signaling method schematic flow sheet；

Fig. 2 is embodiment of the present invention one sender unit structural representation；

Fig. 3 is another sender unit structural representation of the embodiment of the present invention；

Fig. 4 is another sender unit structural representation of the embodiment of the present invention；

Fig. 5 is another sender unit structural representation of the embodiment of the present invention；

Fig. 6 is another sender unit structural representation of the embodiment of the present invention；

Fig. 7 is another sender unit structural representation of the embodiment of the present invention；

Fig. 8 show a carrier occupancy situation schematic diagram in the embodiment of the present invention 5；

Fig. 9 show a carrier occupancy situation schematic diagram in the embodiment of the present invention 6.

Detailed description of the invention

In various embodiments of the present invention:

The each maximum occupation time of unlicensed spectrum of general control is about 10ms (typically having areal variation), Therefore after taking unauthorized carrier wave, the reference signal finding for community, synchronizing and measure is retransmited, such as master Synchronizing signal (Primary Synchronous Signal, PSS)/auxiliary synchronous signals (Secondary Synchronous Signal, SSS), cell special reference (Cell-specific reference signals, CRS), location reference signals (Positioning Reference Signal, PRS), Sounding Reference Signal (Sounding Reference Signal, SRS), discovery signal (Discovery Reference Signal, DRS), Channel status instruction reference signal (Channel State Indication RS, CSI-RS), Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) etc., and it is unrealistic to carry out aforesaid operations.

Simultaneously for use unauthorized carrier wave communication system, need avoid use in unauthorized carrier wave There is the unauthorized carrier wave that website is currently in use, otherwise can cause between system interfering with each other.So in some countries (such as Europe and Japan), for unauthorized carrier wave compulsive requirement support LBT (Listen before Talk, first Say after listening) function.Before using certain unauthorized carrier wave, need to perform CCA (clear channel Assessment) function, if it find that there is equipment to be currently in use this unauthorized carrier wave, or the signal energy of detection Amount more than CCA thresholding, then postpones to access.If it find that channel idle, or the signal energy of detection is less than CCA thresholding, then take this unauthorized carrier wave.

Therefore, LBT/CCA can limit LAA reference signal and sent before taking unauthorized carrier wave.ETSI EN 301 893 (ETSI, ETSI) specifies, it is possible to use short control signaling (SCS, Short Control Signalling) send management and control frame (such as ack/nack signal), and need not Perception present channel is idle, namely need not before transmission perform LBT/CCA.But SCS sends to be had strictly Restriction: if using SCS, within the observation cycle of 50ms, the transmission of the short signaling of self adaptation equipment accounts for Empty ratio maximum is less than 5%, namely 2.5ms.It is little that this limits the impact for WLAN/WiFi, but It is for multiple LAA websites, how to coordinate to send various reference signals in the shortest limiting time It it is a problem demanding prompt solution.

The technical problem to be solved is: provides a kind of and sends signal before unauthorized carrier occupancy Method, reduce LAA access point or LAA base station rob every time account for resource post processing data send beyond (as Community discovery, synchronization, CSI acquisition etc.) time, unauthorized carrier wave can be met again simultaneously and send control Requirement.

Fig. 1 is embodiment of the present invention one signaling method schematic flow sheet, and the method is applied to LAA and connects Access point or LAA base station, as it is shown in figure 1, the method includes:

Step 11: determine and use short control signaling SCS to send the configuration of signal in the unauthorized carrier wave unoccupied phase Information.

It should be noted that short control signaling SCS mentioned in the present invention not merely refers in ETSI regulation SCS, and refer to the unoccupied phase special duration of regulation for sending signal in short-term, channel.When SCS Signal, channel is sent, after LAA access point need not perform clear channel assessment (CCA) (CCA) and first listen in long Say (LBT) function.SCS sends duration to be needed to meet certain control requirement, has the most just run counter to non-awarding The principle that power frequency range different system and equipment close friend coexist.Some area and country may have additionally for SCS Title and definition, collectively referred to here in as SCS.Also some area and country is likely not to have definition SCS, for These areas and country can define SCS and similar rule require (such as to sending the requirement of duration, Send duration in the observation period of fixing duration and cannot be greater than setting ratio) carry out the signal of unoccupied phase and send.

Step 12: according to the described configuration information determined, uses SCS to send described signal.

As a example by sending DRS, homologous ray can be coordinated to send, i.e. between LAA access point or LAA base station Whether send DRS and DRS configuration information alternately.In one specific embodiment, LAA access point or The configuration information that self uses SCS to send signal is sent to other LAA access point or LAA by LAA base station Base station.

Accordingly, described determine the unauthorized carrier wave unoccupied phase use SCS send signal configuration information it Before, the method also includes:

SCS is used to send the configuration information of signal according to other LAA access points received or LAA base station, Judge whether to use SCS to send signal, determine when use SCS sends signal, then perform follow-up flow process, really Surely short control signaling SCS is used to send the configuration information of signal.

It should be noted that no matter LAA access point or LAA base station begin to use SCS to send signal, stop Only use SCS to send signal or change uses SCS to send the configuration information of signal, all can be to other LAA Access point or LAA base station send a notification message, and carry corresponding configuration information.

As a example by sending DRS, it is also possible to intercepted statistics before DRS sends, such as, first detect before transmission Listen 50ms*X, X > 1, the DRS number occurred in statistics 50ms*X and/or LAA access point or LAA Base station number determines oneself to send out DRS.In one specific embodiment, described determine at unauthorized carrier wave non- Before the phase that takies uses SCS to send the configuration information of signal, the method also includes:

Obtain the resource information sent for SCS preset；

In one embodiment of the invention, the method also includes: to except described default or described determine for SCS Resource outside the resource sent carries out clear channel assessment (CCA) (CCA), determines the resource sent for SCS.

It should be noted that when default when resource that SCS sends is the most occupied, frequency domain can be passed through The mode of multiplexing continues to send signal in these resources.

It should be noted that the resource described in the present embodiment includes but not limited to: radio frames, subframe, time Gap, OFDM symbol, Resource Unit (RE).

To send as a example by DRS, can preset each LAA access point or LAA base station (restricted, have association Adjust) ensure at least to send out once at 160ms (i.e. to solidify the transmission pattern of DRS, it is ensured that meet the pipe of SCS System requires), send the DRS cycle if it is desired to shorten, then need to carry out CCA, if if the free time, It is of course possible to send DRS.Here CCA be not intercept after just send data, but in order to send DRS Carry out cell detection, T/F tracking, RRM measurement.

In one specific embodiment, the described configuration information determining that short control signaling SCS of use sends signal, bag Include:

According to default selection algorithm, one or more carrier wave is selected to carry out SCS signal transmission, such as, can With according to carrier load, one or more underload carrier wave is selected to carry out SCS signal transmission.

Other LAA access points or LAA base station do not use SCS to send in the case of signal, random or press The SCS resource using SCS to send signal is determined according to default minimum degree information；

In the case of other LAA access points or LAA base station use SCS to send signal, select idle sum / or the most occupied SCS resource transmission signal.

In one specific embodiment, the method also includes:

If described LAA access point or LAA base station do not send business datum in the 3rd preset time period, SCS is then stopped using to send signal, or, adjust the configuration information using SCS to send signal, to avoid The wasting of resources.Here, as a example by sending DRS, in order to avoid the wasting of resources, if LAA access point or LAA base station does not has business to send or competitive demand in for a long time, then can adjust DRS and send configuration, fall Low SCS is taken.Or, stop paying out DRS.Having seized, reservation certain time sends DRS every time Maintain and synchronize.(such as, if access point is more, and certain access point does not the most send out data, then it is After once take complete, and after certain timing, DRS need to be stopped paying out, concede SCS and send out to other websites Send.First time contention access after not sending data for a long time must pay synchronization cost).

In one specific embodiment, described signal includes one or more of: the auxiliary synchronization of master sync signal PSS/ Signal SSS, cell special reference CRS, location reference signals PRS, Sounding Reference Signal SRS, Downlink dedicated reference signal DRS, physical downlink control channel PDCCH carrying signal.

In one specific embodiment, the method also includes:

And/or,

In one specific embodiment, the method also includes:

The embodiment of the present invention has also correspondingly provided a kind of sender unit, and this device is arranged at LAA and accesses Point or LAA base station, as in figure 2 it is shown, this device includes: the first processing module 201 and the first sending module 202；Wherein,

Described first processing module 201, is used for determining that using SCS to send in the unauthorized carrier wave unoccupied phase believes Number configuration information；

Described first sending module 202, for according to the described configuration information determined, uses SCS to send institute State signal.

In one specific embodiment, as it is shown on figure 3, this device also includes the second sending module 203, receives mould Block 204 and the second processing module 205；Wherein,

Described second sending module 203, is sent to for described use SCS sends the configuration information of signal Other LAA access points or LAA base station；

Described receiver module 204, uses SCS for receiving from other LAA access points or LAA base station Send the configuration information of signal；

Described second processing module 205, for receiving in the first preset time period according to receiver module 204 Other LAA access points or LAA base station use SCS send signal configuration information, it may be judged whether use SCS sends signal, determines when use SCS sends signal, reinforms the first processing module 201 and process.

In one specific embodiment, as shown in Figure 4, this device also includes the 3rd processing module 206 and everywhere Reason module 207,

Described 3rd processing module 206, in being used for intercepting or detect the second preset time period, other LAA access Point or LAA base station use SCS to send the information of signal；

Described fourth processing module 207, for the information intercepted or detect described in basis, it may be judged whether make Send signal with SCS, determine when use SCS sends signal, reinform at the first processing module 201 Reason.

In one specific embodiment, described first processing module, specifically at other LAA access point or LAA In the case of base station does not uses SCS to send signal, at random or determine according to default minimum degree information SCS is used to send the SCS resource of signal；SCS is used to send out at other LAA access points or LAA base station In the case of the number of delivering letters, the selection free time and/or the most occupied SCS resource sends signal.

In one specific embodiment, as it is shown in figure 5, this device also includes the 3rd sending module 208,

Described 3rd sending module 208, for other one or more LAA access points or LAA base station Send and coordinate request.

In one specific embodiment, as shown in Figure 6, this device also includes adjusting module 209,

Described adjusting module 209, for when current LAA access point or LAA base station are at the 3rd Preset Time Do not send business datum in Duan, then stop using SCS to send signal, or, adjust and use SCS to send letter Number configuration information, to avoid the wasting of resources.

In one specific embodiment, as it is shown in fig. 7, this device also includes the 4th sending module 210,

Described 4th sending module 210, for using SCS to send out at current LAA access point or LAA base station When the configuration information of the number of delivering letters changes, send a notification message to other LAA access points or LAA base station, Carry the configuration information after change.

This device is in the unauthorized carrier wave unoccupied phase, according to the default cycle, periodically sends reference signal, And/or, send reference signal in the default subframe before taking unauthorized carrier wave.Such as, sending DRS is Solve community to find, slightly synchronize and RRM measurement problem.DRS can carry out rule according to a long period Cycle send (such as 40ms, sends out 1 ms in 80ms, the 160ms cycle, remains thick and synchronizes).If wanted Solve essence synchronize and CSI obtain, then need in taking former subframes of unauthorized carrier wave send CRS, CSI-RS (5ms, or 5ms-10ms), this has sudden.

Below by specific embodiment, technical scheme is described in further detail.

Before obtaining unauthorized carrier occupancy power, in order to carry out community discovery, synchronize and measure, need to send out Send necessity up-downgoing reference signal and channel, such as: PSS/SSS, CRS, PRS, SRS, DRS, PDCCH etc..According to the actual requirements, need to send one or more in above-mentioned signal.The present embodiment with As a example by DRS, illustrate that multiple LAA access point is how under meeting control requirement and taking non-awarding Send signal or channel before power carrier wave, realize the solution that community finds, synchronizes and measure.Therefore, The solution of the present invention is similarly suitable sends other signals or channel before unauthorized carrier occupancy, including new The signal of design.

Different countries has different unauthorized carrier waves to use control requirement.The present embodiment is with ETSI Regulation and as a example by control requires, i.e. using before certain unauthorized carrier wave, needing to perform LBT/CCA Function.In particular cases can utilize short control signaling SCS send management and control frame (as Ack/nack signal), and need not before transmission perform LBT/CCA.If using SCS, at 50ms The observation cycle in, the short signaling of self adaptation equipment transmission largest duty cycle is less than 5%, namely 2.5ms. The concrete control in other country requires there may exist difference, but the resolving ideas of the present embodiment Similarly suitable solution Similar Problems.

Assume that DRS includes PSS/SSS, CRS and CSI-RS (can configure).PSS/SSS and CRS Finding for community and synchronize, CRS and CSI-RS measures for RRM.

For the sake of Jian Dan, it is assumed that CRS and CSI-RS is single port configuration.In each subframe, CRS occurs Symbol be: symbol 0, symbol 4, symbol 7, symbol 11.SS occurs in subframe 0 and the symbol of subframe 5 Numbers 5, symbol 6.The symbol that CSI-RS occurs is: symbol 9, symbol 10.Without specified otherwise, The symbol implication hereinafter occurred is with where like, all referring to the OFDM symbol (1 of regulation in LTE protocol Individual subframe is 1ms, and according to the difference of CP length, 1 subframe comprises 14 or 12 OFDM symbol).

The transmission cycle assuming DRS can be 10ms, 25ms, 50ms, 100ms or 200ms；DRS Transmission biasing can be 0 subframe to X subframe (X≤cycle-1)；The persistent period (duration) of DRS Can be 1 subframe to 5 subframe (for tdd mode, be 2 subframes to 5 subframes).

If the persistent period of DRS is 1 subframe, then the actual symbolic number sent is 8 symbols；As Really the persistent period of DRS is 2 subframes, then the actual symbolic number sent is 12 (SS and CSI-RS Symbolic number is taken with to take symbolic number in 1 subframe identical in 2 subframes), the like；

Embodiment 1

The present embodiment describes the coordination system before a kind of signal sends, including:

Before step 1, LAA access point send DRS, need to perform minizone and send the coordination system.

Firstly, for sending the LAA access point of DRS, need before sending DRS or start to send During DRS, the neighbouring LAA access point of notice oneself starts to send DRS, and the parameter of sent out DRS. DRS parameter can include following one or more: the cycle, biasing, the persistent period, port, power, time Frequently resource etc..Advice method can be transmitted by the wired connection between LAA access point or radio open.Wireless Mode authorizing on frequency spectrum or can obtain the unauthorized carrier-wave transmission of right to occupation by other.

LAA access point, before sending DRS, needs according to paid-in transmission DRS LAA number and phase Answer parameter configuration, determine whether oneself can send, and send parameter.

When LAA access point prepares initially to send DRS, or when change DRS sends configuration, need according to little The most mutual interval information determines that new DRS sends configuration.LAA access point normally sends the mistake of DRS Cheng Zhong, it is not necessary to carry out minizone in each cycle and send the coordination system.

For the sake of Jian Dan, it is assumed that there are 5 LAA access points are neighbouring access point (AP), respectively AP1, AP2、AP3、AP4、AP5。

CASE 1:LAA access point is not received by neighbouring any access point notice can send DRS.Now, The DRS configuration mode of this LAA access point has the motility of maximum.

Such as: AP5 is ready for sending DRS, before sending, do not receive neighbouring any AP notice can send DRS.Therefore AP5 can send DRS by ETSI SCS mode, but needs the control in accordance with SCS Requirement, and should be taken into account that the most neighbouring AP sends the demand of DRS, under conditions of meeting oneself requirement, Preferably send DRS by minimum degree.Such as can select the cycle of 50ms, the persistent period of 1ms, The biasing of 0 subframe sends DRS.Now, the DRS configuration mode of AP5 has the motility of maximum.

CASE 2:LAA access point receives neighbouring access point and sends the notice of DRS, and SCS takies Time portion can be used.Now, the DRS configuration mode of this LAA access point is restricted.

Such as: AP5 is ready for sending DRS, before sending, known that AP1 and AP2 is sending DRS. The parameter that AP1 notice AP5 DRS sends is: the cycle is 50ms, and the persistent period is 2ms, is biased to 0 Subframe；The parameter that AP2 notice AP5 DRS sends is: the cycle is 50ms, and the persistent period is 2ms, partially It is set to 2 subframes；The time of so AP1 and AP2 actual transmission DRS is 1ms/14 symbol * 12 symbol Number=857us, two AP take 857us+857us=1714us altogether.So AP5 maximum independently takies duration For 2500us-1717us=786us.That is AP5 can not independently take 2 subframes in 50ms (857us) 1 subframe (571us), can independently be taken.One mode is to be set in the AP5 cycle or more than 50ms, The independent persistent period is 1 subframe, is biased to the most configurable.Another one mode AP5 and AP1 or AP2 takies the most same symbol, but is distinguished by frequency division or code division, as time domain is identical, Frequency domain staggers.Persistent period can be 1 subframe, 2 subframes or 3 subframes.Now, AP5 DRS configuration mode is subject to bigger constraint.

CASE 3:LAA access point receives neighbouring access point and sends the notice of DRS, and SCS takies Time, now, this LAA access point can only be at the most occupied SCS close to taking or being occupied full Repeat to take on frame or symbol, it is impossible to take new subframe or symbol.Or perform hereinafter other coordination machine System.

Such as: AP5 is ready for sending DRS, before sending, known that AP1, AP2 and AP3 send DRS.The parameter that AP1 notice AP5 DRS sends is: the cycle is 50ms, and the persistent period is 2ms, partially It is set to 0 subframe；The parameter that AP2 notice AP5 DRS sends is: the cycle is 50ms, and the persistent period is 2ms, It is biased to 2 subframes；The parameter that AP3 notice AP5 DRS sends is: the cycle is 50ms, and the persistent period is 1ms, is biased to 4 subframes.So AP1, AP2, AP3 sends when DRS takies altogether a length of: 857us+857us+571us=2285us, then AP5 maximum is a length of 215us when independently taking.AP5 is the most not Foot independently takies 1 subframe, the symbol as can only taking with AP1 or AP2 or AP3.Now, AP5 can only repeat to take in the most occupied subframe or symbol, it is impossible to takies new subframe or symbol.

LAA access point before sending, carry out minizone send coordination be in order to can not run counter to SCS control want Ask.If in the observation period of 50ms, 2.5ms can be used for SCS send duration close to take or by Taking, follow-up preparation sends the LAA access point of DRS before unauthorized carrier occupancy, can only have been used for Send the DRS sending this access point in the time-domain resource of DRS, and can not take within this 50ms cycle New time-domain resource sends DRS.Meeting this type of condition, LAA access point is sent out before unauthorized carrier occupancy DRS is sent to need not perform LBT/CCA function.

Except constraint DRS sends in addition to configuration mode, it is also possible to perform other the following coordination system:

As DRS can also be sent by coordination in business system.Such as can distribute same with operator One disposes the DRS of several LAA access points under place sends mode.

Even, when a certain LAA access point observes that SCS can take duration and be occupied full or close to taking, DRS can be sent and send request instruction to neighbouring access point.The access point not having business for a long time receives this instruction After, can stop sending DRS signal；Or the LAA that DRS sends, and the cycle is short, grow up when taking accesses Point can adjust its parameter configuration, concedes a part of time-domain resource to the access point sending DRS request instruction Use.Stop sending the LAA access point of DRS signal or adjustment DRS sends the LAA configured and accesses Point sends after mode updates at DRS, need to resend new configuration mode (or terminating sending signal) to Neighbouring access point.

LAA access point is before sending DRS, it is also possible to the neighbouring LAA access point of inquiry sends situation.Root According to the response scenarios of neighbouring access point, determine whether DRS sends before carrier occupancy, and joining of sending Put parameter.

According to foregoing description, before taking unauthorized carrier wave, minizone sends DRS or other necessary signals The transmission coordination system at least include following one or more:

Whether send alternately between a.LAA access point the information of DRS and/or DRS parameter configuration (as The most all LAA access points send the parameter configuration solidification of DRS, then be not required to interaction parameter configuring condition)；

Whether send the information of DRS and/or the mutual of the parameter configuration of DRS can be divided into two ways again: the One is to notify to neighbouring access point, is not required to neighbouring access point and responds.Second species is like handshake mechanism, notice Give confirmation to neighbouring access point, neighbouring access point.

Based on this mechanism, send the access point proactive notification information of DRS to neighbouring access point, neighbouring access point When being ready for sending DRS, decide whether to send as long as adding up the information received.

B.LAA access point, before sending DRS, needs the parameter having sent DRS according to neighbouring access point to join Put, determine whether oneself can send, and specifically send parameter；

The most a certain LAA access point observes that SCS can take duration and be occupied full or close to taking, Ke Yifa Send DRS to send request instruction to coordinate to neighbouring access point；

The LAA not having business for a long time can stop sending DRS signal；Or the DRS transmission cycle is short, The LAA access point grown up when taking can adjust its parameter configuration, concedes a part of time-domain resource to sending The access point of DRS request instruction uses；

E. stop sending the LAA access point of DRS signal or adjustment DRS sends the LAA configured and accesses Point sends after mode updates at DRS, need to resend new configuration mode (or terminating sending signal) to Neighbouring access point.

F. it addition, with coordinating multiple neighbouring LAA access point in business system to send DRS.

G., in addition to mechanism a, LAA access point can also be before sending DRS, and the neighbouring LAA of inquiry accesses Point transmission situation.According to the response scenarios of neighbouring access point, determine whether DRS sends before carrier occupancy, And the configuration parameter sent.H. still an alternative is that the power association sending SCS between LAA access point Adjust.The LAA access point of such as two wide aparts, another one access point has occupied in 50ms 2.5ms SCS sends duration, and this access point can not follow this control requirement.This has two kinds of methods equally: One is the power parameter configuration that adjacent LAA access point sends DRS alternately, is transmitted coordinating.Two is LAA Signal in SCS is measured by access point, if less than detection threshold value, then this LAA access point is not It is thought that effectively taking SCS.Calculate thus without taking duration less than the signal of detection threshold value Inside SCS.

Step 2, LAA access point, according to step 1, determine that DRS starts to send DRS after sending configuration, and And DRS is sent information with needs and/or DRS parameter configuration notifies to neighbouring LAA access point.

Send the LAA access point of DRS, when needing before sending DRS or start to send DRS, notice Neighbouring LAA access point oneself starts to send DRS, and the parameter of sent out DRS.DRS parameter can be wrapped Include following one or more: the cycle, biasing, the persistent period, port, power, running time-frequency resource etc..Notice Mode can be transmitted by the wired connection between LAA access point or radio open.Wireless mode can authorize The unauthorized carrier-wave transmission of right to occupation has been obtained on frequency spectrum or by other.

For another possibility mechanism (corresponding machine-processed g in step 1), LAA access point determine permissible After sending DRS by SCS, do not notify that the DRS of neighbouring access point oneself sends information and/or DRS Parameter configuration.And after receiving the inquiry message that neighbouring LAA access point sends, retransmit as above information to Neighbouring LAA access point.

Step 3, long-time in do not have business to send or competitive demand, the transmission configuration of DRS can be changed, very To stopping paying out DRS.

The first may select is that LAA access point can stop paying out DRS.If such as access point is more, and Certain access point does not the most send out data, then it takies complete the last time, starts intervalometer, retains one Fix time and send DRS maintenance synchronization, prevent from resuming in a short time demand.After certain timing, DRS can be stopped paying out, concede SCS and send to other websites.Do not send the first time contention access after data for a long time Synchronization cost may be paid.

Or the transmission configuration of DRS can be changed, take complete the most the last time, start intervalometer, After certain timing, the transmission configuration of renewable DRS, reduction may utilize duration to SCS and takies. The transmission cycle of being configured to of such as original DRS is 25ms, and the persistent period is 2ms, is biased to 0 subframe, After certain timing, all the time without new service access, the transmission cycle of being configured to of renewable DRS is 100ms, the persistent period is 1ms, is biased to 0 subframe.

Stop sending the LAA access point of DRS signal or adjusting DRS sending the LAA access point of configuration After DRS transmission mode updates, need to resend new configuration mode (or terminating sending information of signal) Give neighbouring access point.

Step 4, UE, according to the DRS signal received, perform cell detection, time-frequency tracking and RRM and survey Amount.

DRS includes PSS/SSS, CRS and CSI-RS (can configure).PSS/SSS and CRS is for little District finds and synchronizes, CRS and CSI-RS measures for RRM.

Embodiment 2

The present embodiment relates to passive listening before a kind of signal sends, and specifically includes:

Before step 1, LAA access point send DRS, need to perform passive listening.

LAA access point carries out intercepting statistics before being ready for sending DRS, can start intervalometer, and statistics is certain The DRS occurred in duration (being for example, at least the maximum cycle of DRS, such as 200ms), it is judged that send out The information such as the transmission pattern sending the LAA number of access point of DRS, DRS.

LAA access point, before sending DRS, needs according to the transmission DRS LAA number detected and phase Answer parameter configuration, determine whether oneself can send, and send parameter.

When LAA access point prepares initially to send DRS, or when change DRS sends configuration, need according to detecing Listen and detection information is to determine that new DRS sends configuration.During LAA access point normally sends DRS, Need not intercept in each cycle.

For the sake of Jian Dan, it is assumed that there are 5 LAA access points are neighbouring access point, respectively AP1, AP2, AP3、AP4、AP5。

CASE 1: in time of intercept, LAA access point does not listen to neighbouring any access point and sends DRS. Now, the DRS configuration mode of this LAA access point has the motility of maximum.

Such as: AP5 is ready for sending DRS, before sending, neighbouring any access point notice meeting is not listened to Send DRS.Therefore AP5 can send DRS by ETSI SCS mode, but needs in accordance with SCS Control requirement, and should be taken into account that in the future neighbouring AP sends the demand of DRS, meeting the bar of oneself requirement Under part, preferably send DRS by minimum degree.Such as can select the cycle of 50ms, 1ms holds The continuous time, the biasing of 0 subframe sends DRS.Now, the DRS configuration mode of AP5 has the spirit of maximum Activity.

CASE 2: in time of intercept, LAA access point has listened to neighbouring access point and has sent DRS, SCS Can holding time part can use.Now, the DRS configuration mode of this LAA access point is restricted.

Such as: AP5 is ready for sending DRS, before sending, have detected that AP1 and AP2 is sending DRS. The parameter that AP1 notice AP5 DRS sends is: the cycle is 50ms, and the persistent period is 2ms, is biased to 0 Subframe；The parameter that AP2 notice AP5 DRS sends is: the cycle is 50ms, and the persistent period is 2ms, partially It is set to 2 subframes；The time of so AP1 and AP2 actual transmission DRS is 1ms/14 symbol * 12 symbol Number=857us, two AP take 857us+857us=1714us altogether.So AP5 maximum independently takies duration For 2500us-1717us=786us.That is AP5 can not independently take 2 subframes in 50ms (857us) 1 subframe (571us), can independently be taken.One mode is to be set in the AP5 cycle or more than 50ms, The independent persistent period is 1 subframe, is biased to the most configurable.Another one mode AP5 and AP1 or AP2 takies the most same symbol, but is distinguished by frequency division or code division, and the persistent period is permissible It is 1 subframe, 2 subframes or 3 subframes.Now, the DRS configuration mode of AP5 is by more about Bundle.

CASE 3: in time of intercept, LAA access point has listened to neighbouring access point and has sent DRS, SCS Can holding time close to taking or be occupied full, now, this LAA access point can only be the most occupied Repeat to take in SCS subframe or symbol, it is impossible to take new subframe or symbol.

Such as: AP5 is ready for sending DRS, before sending, have detected that AP1, AP2 and AP3 send out Send DRS.The parameter that AP1 notice AP5 DRS sends is: the cycle is 50ms, and the persistent period is 2ms, It is biased to 0 subframe；The parameter that AP2 notice AP5 DRS sends is: the cycle is 50ms, and the persistent period is 2ms, is biased to 2 subframes；The parameter that AP3 notice AP5 DRS sends is: the cycle is 50ms, when continuing Between be 1ms, be biased to 4 subframes.So AP1, AP2, AP3 sends when DRS takies altogether a length of: 857us+857us+571us=2285us, then AP5 maximum is a length of 215us when independently taking.AP5 is the most not Foot independently takies 1 subframe, the symbol as can only taking with AP1 or AP2 or AP3.Now, AP5 can only repeat to take in the most occupied subframe or symbol, it is impossible to takies new subframe or symbol.

For above-mentioned three kinds of situations, if AP5 can not clearly judge the transmission figure of LAA website number and DRS Sample, it can judge by the way of energy measuring that this unauthorized carrier wave is the most occupied, if the most occupied With, then may determine that the running time-frequency resource for SCS.

LAA access point before sending, carries out intercepting and detection is to not run counter to SCS control requirement.As Really in the observation period of 50ms, 2.5ms can be used for duration that SCS sends close to taking or be occupied full, Follow-up preparation sends the LAA access point of DRS before unauthorized carrier occupancy, can only have been used for transmission DRS Time-domain resource on send the DRS of this access point, and new time domain can not be taken within this 50ms cycle Resource sends DRS.Meeting this type of condition, LAA access point sends DRS before unauthorized carrier occupancy Need not perform LBT/CCA function.

DRS can also be sent by coordination with operator or with in access system.Such as permissible with operator The DRS distributing several LAA access points under same deployment place sends mode.Even, connect as a certain LAA Access point listens to SCS and can take duration and be occupied full or close to taking, and can send DRS and send request and refer to Neighbouring access point is given in order.After the access point not having business for a long time receives this instruction, can stop sending DRS letter Number；Or the LAA access point that DRS sends, and the cycle is short, grow up when taking can adjust its parameter configuration, Concede a part of time-domain resource to use to the access point sending DRS request instruction.Stop sending DRS signal LAA access point or adjust DRS and send the LAA access point of configuration and send after mode updates at DRS, Need to resend new configuration mode (or terminating sending signal) to neighbouring access point.

It should be noted that in the present embodiment, power coordination as described in Example 1 mechanism can be applied.

Step 2, LAA access point, according to step 1, determine that DRS starts to send DRS after sending configuration.

The first may select is that LAA access point can stop paying out DRS.If such as access point is more, and Certain access point does not the most send out data, then it takies complete the last time, starts intervalometer, retains one Fix time and send DRS maintenance synchronization, prevent from resuming in a short time demand.After certain timing, DRS can be stopped paying out, concede SCS and send to other websites.Do not send the first time contention access after data for a long time Synchronization cost must be paid.

Stop sending the LAA access point of DRS signal or adjusting DRS sending the LAA access point of configuration Send after mode updates at DRS, it is also possible to resend new configuration mode and (or terminate sending the letter of signal Breath) give neighbouring access point.

Embodiment 3

The present embodiment relates to a kind of mixed mechanism (short control signaling (SCS) and idle channel sending DRS Assessment (CCA) binding mechanism), concrete:

LAA can use a kind of unauthorized carrier wave short-and-medium control signaling (SCS) and clear channel assessment (CCA) (CCA) Binding mechanism sends DRS or other necessary signals.LTE/LAA can formulate strict unauthorized in advance SCS is utilized to send the standard of signal before carrier occupancy, including limiting the cycle of these symbols/channel appearance, holding Continuous time etc., simultaneously need to meet ETSI or other countries and the control requirement in area.If LAA connects Access point prepares the symbol outside these send pattern and sends reference signal, then need to perform CCA function, can only In the case of channel idle, send reference signal, and often send and be once accomplished by performing a CCA function.

Such as, before LTE standard can be limited to unauthorized carrier occupancy, the cycle sending SCS is 25ms. The persistent period of each SCS is 1 subframe.For example, it may be possible to occur the subframe of SCS be only subframe 0, Subframe 25, subframe 50, subframe 75 etc..Certain LAA access point be ready for sending DRS or other signals/ Channel, if it wants to be sent by SCS before intercepting, it can only send in these subframes.Send before it Can intercept in these subframes, select to send DRS in idle SCS subframe.If above-mentioned SCS Frame has signal to send, and it these time-domain resource of multiplexing can only send DRS (as time domain is identical, frequency domain is wrong Open).Send DRS according to SCS mode to need not perform CCA function, it is only necessary to before initial transmission That intercepts and assess SCS subframe takies situation.

SCS subframe sends before signal, multiple LAA access points can time domain, frequency domain, spatial domain and Power many aspects coordinate.For the AP taken, these subframes can be done what some interference were evaded Mode, such as muting etc..

Or send signal, such as certain LAA access point in the following way and be ready for sending DRS, above-mentioned It is likely to occur the subframe 0 of DRS, subframe 25, subframe 50, subframe 75 etc. the most occupied, or this access Point intends to send DRS with a less cycle such as 5ms, can perform CCA function, can only be at letter Send reference signal in the case of the road free time, and often send and be once accomplished by performing a CCA function, above-mentioned SCS subframe can need not perform CCA function.

Embodiment 4

The present embodiment relates to a kind of realizing what DRS and other necessary signals sent by channel selection algorithm Mechanism is concrete:

For there is the scene of multiple unauthorized carrier wave, certain LAA access point is ready for sending DRS, and it can To select one or several the cleanest channel or carrier wave to send by long-term energy measuring and carrier sense DRS, as preferentially seizing and send the candidate carrier set of business, and does not send DRS on other carrier waves. The carrier set sending DRS also serves as the carrier set of prioritized contention and use.

Such as there are five neighbouring LAA access points, respectively AP1, AP2, AP3, AP4, AP5. These 5 LAA access points all support that how unauthorized carrier wave sends.Operational unauthorized carrier wave has 20, Respectively UCC1, UCC2 ..., UCC20 (actually there may exist up to 24 at 5G frequency spectrum The unauthorized carrier wave of 20M).AP1, AP2, AP3, AP4, AP5 can be examined by long-term energy Survey and carrier sense selects one or several the cleanest channel or carrier wave to send DRS, preferential as one Seize and send the candidate carrier of business, and on other carrier waves, do not send DRS.

When how unauthorized carrier channel all takies frequently, in the case of heavier loads, can use CCA or combination Method in other embodiments sends DRS and other necessary signals.

Embodiment 5

The present embodiment relates to a kind of new frame format or sends pattern, concrete:

After taking unauthorized carrier wave, quickly utilize unauthorized carrier wave to send data, improve unauthorized carrier wave Spectrum utilization efficiency, needs to solve unauthorized carrier wave essence further and synchronizes and CSI quick obtaining problem.If Solve essence to synchronize and CSI quick obtaining problem, the most preferably send out in taking former subframes of unauthorized carrier wave Send downlink reference signal, such as the cycle of CRS, CSI-RS, generally 5ms to 10ms.This has burst Property, it is different from the DRS periodic regularity acted on for thick synchronization etc. and sends.DRS long period sends can not Maintain essence to synchronize and channel conditions is measured, if DRS intensive transmission of short cycle is run counter to again unauthorized carrier wave and used Control requirement.Take unauthorized before send, can only be sent by short control signaling SCS, otherwise at present Do not meet the control requirement of LBT, the competition of other equipment and use can be interfered yet, not meet close friend The principle coexisted.

In the present embodiment:

A. it is possible, firstly, to mark off a part of SCS control duration and synchronize for essence and the letter of CSI quick obtaining Number send.2.5ms SCS available duration via within the 50ms observation period such as mark off 1ms for sending The reference signal that essence synchronizes and CSI measures, such as CRS and CSI-RS.CRS may be used for AGC and essence is same Step (time-frequency tracking), CSI-RS measures for CSI and feedback.Other durations (such as 1.5ms) can be used for The signals such as DRS utilize SCS to send before taking unauthorized carrier wave.

B. define a kind of new frame format, before CCA or after CCA, define one or several OFDM Symbol is SCS symbol, is used for sending the reference signals such as CRS and CSI-RS.Send these reference signals Effect is by AGC, Time and Frequency Synchronization and CSI and measures.SCS symbol is utilized to send these reference signals not Need to perform CCA function.

Intercepting and taking and have two kinds of equipment at present about unauthorized carrier wave, the first is equipment based on frame (Frame-based Equipment, FBE), another is equipment (Load-based based on load Equipment, LBE).

At present, FBE has strict frame format requirement, including carrier occupancy phase, idle periods.In idle periods End is divided into again CCA duration.

For FBE, in conjunction with the existing framework of LTE, we define a kind of new frame for LAA and tie Structure, including: carrier wave idle periods, carrier occupancy phase.Carrier occupancy phase duration can not be wanted above and below control Ask (such as Europe is limited to 1ms to 10ms).Carrier wave idle periods is divided into again: SCS symbol duration, CCA Duration and residue idle periods.Carrier wave idle periods is also required to meet control requirement, and (such as Europe is for being not less than carrier wave Take the 5% of duration).Symbol shared by carrier wave idle periods can design the front end in subframe or frame；Also may be used Design is at subframe or the end of frame；Can also part idle periods Design of Symbols in subframe or the front end of frame, additionally A part of idle periods Design of Symbols is at subframe or the end of frame.Before SCS symbol can be placed on CCA, it is possible to After being placed on CCA, before being preferably placed at CCA.Regardless of the position of SCS symbol, utilize SCS Symbol sends reference signal and all need not perform CCA function.

Such as, as shown in Figure 8, whole unauthorized carrier wave can be set and use anchor-frame cycle (fixed frame Period) it is 10 LTE subframes, i.e. 10ms.

According to control requirement, carrier wave idle periods must not be less than the 5% of carrier occupancy duration, then may be assumed that carrier wave A length of X OFDM symbol when taking, carrier wave free time length is Y OFDM symbol.There is a following formula:

X+Y=14symbols*10subframes

Y >=X*5%

Y can be solved >=6.66 symbols, so for the anchor-frame cycle of 10ms duration, carrier wave is empty The not busy phase is at least 7 symbols.

Set carrier wave idle periods and be positioned at the front end of anchor-frame, take symbol 0 to symbol 6.Symbol 0 and symbol 1 For SCS symbol, when taking, it is about 140us.It should be noted that SCS takies duration here to need to meet SCS Control requirement, i.e. within the observation cycle of 50ms, the short signaling transmission largest duty cycle of self adaptation equipment is not More than 5%, namely 2.5ms.Symbol 2 is other idle periods to symbol 5.Symbol 6 is CCA duration, For clear channel assessment (CCA), carry out intercepting and competing of unauthorized carrier wave.If intercepted result is idle, as Shown in figure, the remainder of anchor-frame can be this hold facility.

SCS symbol is used for sending the reference signals such as CRS, CSI-RS, and effect is by AGC, and time-frequency is same Step and CSI measure.At the SCS symbolic component of each anchor-frame, each LAA access point can be carried out So send, without performing LBT/CCA mechanism.After competition to unauthorized carrier wave, competition is to money The LAA access point in source can send rapidly business, without devote a tremendous amount of time again carry out AGC, The correlation step such as thick synchronization, essence synchronization and CSI measurement, improve LAA and utilize unauthorized carrier wave to send industry The spectrum efficiency of business.

It should be noted that above-mentioned example is only an example of the present invention, in actual applications, frame format In SCS symbol, CCA symbol, carrier occupancy phase, carrier wave idle periods, anchor-frame etc. take duration and Particular location has multiple possibility, but at least needs to include SCS part.

It addition, utilize the mode of unlicensed spectrum to have CA SDL (Carrier Aggregation for LAA at present Supplemental Downlink, spectrum aggregating supplements downlink), CA DL+UL (Carrier Aggregation Downlink and Uplink spectrum aggregating downlink and uplink), Standalone (independent dispose). Wherein SDL and DL+UL is current main way.Therefore for pure descending transmission and similar TDD side The transmission of formula, SCS symbol in frame format, CCA symbol, the carrier occupancy phase, carrier wave idle periods, fixing Frame etc. takies duration and particular location has multiple possibility.Such as based on similar TDD mode, SCS symbol Can combine with the structure of special subframe (DwPTS, GP, UpPTS), be designed.

C. amendment is for essence synchronization and the RE form of signal such as CRS and CSI-RS of CSI quick obtaining, Reduce and time domain is taken.

Owing to SCS duration has control requirement, typically send for SCS in anchor-frame and can only have several symbol. If the time-frequency form of CRS and CSI-RS according to current LTE standard, send in several symbols this two Planting reference signal may be relatively difficult, such as, can not send current time-frequency lattice in 1 or 2 SCS symbols CRS and CSI-RS of formula.

Having two kinds of solutions: the first is to design an appropriate number of SCS symbol, shortcoming is affected by control and wants The restriction asked.The second be amendment reference signal existing form, or redesign one for essence synchronize and The reference signal measured.

Such as, if needing to send CRS and CSI-RS in 4 SCS symbols, need CRS and The time-frequency form of CSI-RS is modified, and in each subframe, the symbol that CRS occurs is: symbol 0, symbol 4, symbol 7, symbol 11.Symbol 0 and symbol 3 can be revised as according to symbol 0 before and the side of symbol 4 Formula sends CRS.The RE of CSI-RS can design the symbol 1 in first time slot and symbol 2.

Embodiment 6

In the present embodiment:

B. define a kind of new frame format, before CCA or after CCA, define one or several OFDM Symbol is SCS symbol, is used for sending the reference signals such as CRS and CSI-RS.Send these reference signals Effect is by AGC, Time and Frequency Synchronization and CSI and measures.SCS symbol is utilized to send these reference signals not Need to perform CCA function.The character position of SCS can frame head, can also postamble, can be at CCA Before, can also be after CCA and not necessarily adjacent with CCA.

In addition, it should be noted that can there be a multiple implication carrier occupancy phase:

For the carrier occupancy phase first is meant that for concrete equipment, certain equipment is by LBT or CCA etc. After channel/carrier is estimated by similar approach, find channel idle or available and when successfully take a section Long.If equipment finds that channel/carrier is unavailable or does not take this channel/carrier, for this equipment, The unoccupied phase of this equipment a length of when this period.SCS generally refer to occur at one section of this equipment unoccupied phase or Several sections of special durations, i.e. obtain the right to use not over LBT or CCA and send short signaling by force.But Be SCS itself use this section or several sections in short-term length can calculate carrier occupancy duration (or and the carrier occupancy phase It is collectively referred to as the carrier occupancy phase) the inside, it is possible to calculate inside carrier wave unoccupied duration, can have multiple understanding.

For carrier occupancy phase another one is meant that for frame format, be define one section of frame format by with The duration taken is competed in multiple equipment.In general, this take phase each equipment need by LBT or Channel/carrier is estimated or competes by the similar approach such as CCA, finds channel idle or available the most just can account for With.For concrete equipment, the phase that takies that the carrier occupancy phase in frame format is likely to be this equipment, (this set Standby competition is to resource), it is also possible to it is the unoccupied phase (this equipment does not compete resource) of this equipment.SCS Need not obtain the right to use by LBT or CCA.SCS itself use this section or several sections length can in short-term To calculate in carrier occupancy duration (or being collectively referred to as the carrier occupancy phase with the carrier occupancy phase) the inside, it is possible to calculate and carrying , can there be multiple understanding ripple unoccupied duration (or carrier wave idle periods) the inside.

With reference to FBE, in conjunction with the existing framework of LTE, we define a kind of new frame for LAA and tie Structure, including: carrier wave idle periods, carrier occupancy phase, SCS duration.Carrier occupancy phase duration not can exceed that and (such as Europe is limited to 1ms to 10ms) is required less than control.Carrier wave idle periods is divided into again: during CCA Length and residue idle periods.Carrier wave idle periods is also required to meet control requirement, and (such as Europe accounts for for being not less than carrier wave With the 5% of duration).Symbol shared by carrier wave idle periods can design the front end in subframe or frame；Also can set Meter is at subframe or the end of frame；Can also part idle periods Design of Symbols in subframe or the front end of frame, other one Part idle periods Design of Symbols is at subframe or the end of frame.

Before SCS symbol can be placed on CCA, it is possible to after being placed on CCA, and not necessarily with CCA Symbol is adjacent, before being preferably placed at CCA.Regardless of the position of SCS symbol, SCS symbol is utilized to send out Reference signal is sent all to need not perform CCA function.

Illustrate as a example by the part that SCS duration is considered as the carrier occupancy phase below.

Such as, as it is shown in figure 9, whole unauthorized carrier wave can be set use anchor-frame cycle (fixed frame Period) it is 10 LTE subframes, i.e. 10ms.

X+Y=14symbols*10subframes

Y >=X*5%

SCS duration may be considered carrier wave idle periods or a part for carrier wave free time length, it is also possible to is considered Carrier occupancy phase or a part for carrier occupancy duration.If SCS duration is considered as carrier wave free time length A part, then include that the carrier wave idle periods of SCS duration is at least 7 symbols, such as embodiment five；If SCS Duration is considered as a part for carrier occupancy duration, does not the most include the carrier wave free time length of SCS duration at least It is 7 symbols.

It should be noted that no matter how SCS duration is assert and carrier wave idle periods and carrier occupancy phase Duration relation how and will define whether that change, various countries' rule are the most consistent etc. future, not affect the present invention Feature, i.e. introduce and include the frame format of SCS.SCS symbol send short signaling can not carry out LBT or CCA。

I.e. symbol 0 and the symbol 1 foremost of frame is SCS symbol, is about 140us when taking.Should be noted that Be that SCS takies duration and needs to meet SCS control and require (various countries are the most inconsistent), as at 50ms here The observation cycle in, the short signaling of self adaptation equipment transmission largest duty cycle is less than 5%, namely 2.5ms.

Set carrier wave idle periods and be positioned at the front end of anchor-frame, take symbol 2 to symbol 8.Symbol 2 is to symbol 7 Idle periods for other.Symbol 8 is CCA duration, for clear channel assessment (CCA), carries out unauthorized carrier wave Intercept and compete.If intercepted result is idle, the remainder of anchor-frame can be that this equipment accounts for as shown in the figure With.

SCS symbol is used for sending the reference signals such as CRS, CSI-RS and necessary short signaling, and effect is by AGC, Time and Frequency Synchronization and CSI measurement etc..At the SCS symbolic component of each anchor-frame, each LAA connects Access point can be carried out so sending, without performing LBT/CCA mechanism.In competition to unauthorized load After ripple, the LAA access point competing resource can send rapidly business, without when spending substantial amounts of again Between carry out AGC, thick synchronize, essence synchronizes and the correlation step such as CSI measurement, improve LAA and utilize non-awarding Power carrier wave sends the spectrum efficiency of business.

It should be noted that it is SDL (Carrier Aggregation that the most unauthorized carrier wave uses Supplemental Downlink supplements downlink) mode or DL+UL is (Downlink and Uplink Spectrum aggregating downlink and uplink) mode, after competing unauthorized carrier wave by access point, surveyed by transmission Amount signal CSI-RS or CRS, is then based on UE and measures the 4ms time delay of feedback, it will make eNB very Difficulty obtains in current holding time and uses CSI, the restriction that such as Japan has maximum holding time to be 4ms. So uplink SRS or similar signal can be sent by UE, access point is obtained down by channel reciprocity Row CSI is a kind of feasible method.The embodiment of the present invention can reduce by the way of sending SRS in advance CSI measures feedback delay problem, concrete, and UE can carry out periodically sending SRS, class by SCS Send like periodic DRS, such as embodiment 1 to embodiment 4, it is also possible to by taking unauthorized carrier wave Send SRS in front default resource, such as embodiment 5 and 6, such as, take the previous height of unauthorized carrier wave Utilizing SCS to send SRS (single or multiple transmission) in frame or several subframe, this is different from and synchronizes for thick The DRS periodic regularity of the effects such as maintenance sends.After access point receives the SRS that UE sends, based on letter Road heterogeneite obtains descending CSI, thus dispatch rapidly data after taking unauthorized carrier wave, it is to avoid UE Measure the 4ms time delay of feedback.

Above-mentioned each unit can by electronic equipment central processing unit (Central Processing Unit, CPU), digital signal processor (Digital Signal Processor, DSP) or programmable logic array (Field -Programmable Gate Array, FPGA) realize.

Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter Calculation machine program product.Therefore, the present invention can use hardware embodiment, software implementation or combine software and The form of the embodiment of hardware aspect.And, the present invention can use and wherein include calculating one or more The computer-usable storage medium of machine usable program code (includes but not limited to disk memory and optical storage Device etc.) form of the upper computer program implemented.

The present invention is with reference to method, equipment (system) and computer program according to embodiments of the present invention Flow chart and/or block diagram describe.It should be understood that can be by computer program instructions flowchart and/or side Flow process in each flow process in block diagram and/or square frame and flow chart and/or block diagram and/or the knot of square frame Close.Can provide these computer program instructions to general purpose computer, special-purpose computer, Embedded Processor or The processor of other programmable data processing device is to produce a machine so that by computer or other can The instruction that the processor of programming data processing equipment performs produces for realizing in one flow process or multiple of flow chart The device of the function specified in flow process and/or one square frame of block diagram or multiple square frame.

These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing device In the computer-readable memory worked in a specific way so that be stored in this computer-readable memory Instruction produces the manufacture including command device, and this command device realizes at one flow process of flow chart or multiple stream The function specified in journey and/or one square frame of block diagram or multiple square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, makes Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.

The above, only presently preferred embodiments of the present invention, it is not intended to limit the protection model of the present invention Enclose.

Claims

1. a signaling method, is applied to LTE and authorizes photocarrier method to access LAA access point or LAA Base station, it is characterised in that the method includes:

Method the most according to claim 1, it is characterised in that the method also includes: by described use SCS sends the configuration information of signal and is sent to other LAA access points or LAA base station,

Method the most according to claim 1, it is characterised in that described determine account for unauthorized carrier wave is non- Before using SCS to send the configuration information of signal with the phase, the method also includes:

Method the most according to claim 1, it is characterised in that described determine account for unauthorized carrier wave is non- SCS is used to send the configuration information of signal with the phase, including:

Obtain the resource information sent for SCS preset；

5. according to the method described in any one of claim 2 to 4, it is characterised in that the method also includes: To except described default or described determine for the resource that SCS sends in addition to resource carry out idle channel and comment Estimate CCA, determine the resource sent for SCS.

6. according to the method described in any one of Claims 1-4, it is characterised in that described determine use SCS sends the configuration information of signal, including:

7. according to the method described in any one of Claims 1-4, it is characterised in that described determine award non- Before the power carrier wave unoccupied phase uses SCS to send the configuration information of signal, the method also includes:

8. according to the method described in any one of Claims 1-4, it is characterised in that the method also includes:

9. according to the method described in any one of Claims 1-4, it is characterised in that the method also includes: LAA access point or LAA base station are when the configuration information using SCS to send signal changes, to other LAA access point or LAA base station send a notification message, and carry the configuration information after change.

10. according to the method described in any one of Claims 1-4, it is characterised in that described signal includes One or more of: master sync signal PSS/ auxiliary synchronous signals SSS, cell special reference CRS, Location reference signals PRS, Sounding Reference Signal SRS, discovery signal DRS, channel status instruction ginseng Examine signal CSI-RS, physical downlink control channel PDCCH carrying signal.

11. according to the method described in any one of Claims 1-4, it is characterised in that described configuration information Including following one or more: the cycle, biasing, the persistent period, port, power, running time-frequency resource.

12. according to the method described in any one of Claims 1-4, it is characterised in that the method also includes:

And/or,

13. according to the method described in any one of Claims 1-4, it is characterised in that the method also includes:

14. according to the method described in any one of Claims 1-4, it is characterised in that the method also includes:

15. 1 kinds of sender units, are arranged at LAA access point or LAA base station, it is characterised in that This device includes: the first processing module and the first sending module；Wherein,

16. devices according to claim 15, it is characterised in that this device also includes the second transmission mould Block, receiver module and the second processing module；Wherein,

17. devices according to claim 15, it is characterised in that this device also includes the 3rd process mould Block and fourth processing module,

18. devices according to claim 15, it is characterised in that

Described first processing module, specifically for obtaining the resource information sent for SCS preset；And Intercept the situation that takies of the described default resource sent for SCS, described default send for SCS When resource can carry out signal transmission, use the described default resource transmission signal sent for SCS.

19. according to the device described in any one of claim 15 to 18, it is characterised in that

Described first processing module, specifically for according to the selection algorithm preset, selecting one or more carrier wave Carry out SCS signal transmission.

20. according to the device described in any one of claim 15 to 18, it is characterised in that this device also wraps Include the 3rd sending module,

21. according to the device described in any one of claim 15 to 18, it is characterised in that this device also wraps Include adjusting module,

22. according to the device described in any one of claim 15 to 18, it is characterised in that this device also wraps Include the 4th sending module,

23. according to the device described in any one of claim 15 to 18, it is characterised in that this device is non- Authorize the carrier wave unoccupied phase, according to the default cycle, periodically send reference signal, and/or, non-taking Authorize and in the default resource before carrier wave, send reference signal.

24. according to the device described in any one of claim 15 to 18, it is characterised in that this device is non- Authorize the carrier occupancy phase, be continuing with described configuration information and send signal.

25. according to the device described in any one of claim 15 to 18, it is characterised in that this device is in unauthorized load Ripple takies in the phase, stops sending described signal, or, default resource continues send described signal.