CN106656895A

CN106656895A - DRS transmission method and device

Info

Publication number: CN106656895A
Application number: CN201510744741.5A
Authority: CN
Inventors: 刘建军; 侯雪颖; 柯颋; 王锐; 沈晓冬
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2015-11-04
Filing date: 2015-11-04
Publication date: 2017-05-10
Anticipated expiration: 2035-11-04
Also published as: CN106656895B

Abstract

The invention provides a DRS transmission method and device. The method comprises: a DRS is multiplexed to a channel region and is transmitted to a terminal at a non-licensed frequency band carrier of a licensed assisted access (LAA) in an LTE system, wherein the channel region at least includes a PDSCH area and a guard interval with the part of OFDM symbol length is preset at an OFDM symbol where the PDSCH area is located before DRS sending. Therefore, a problem that other base stations and carriers lose DRS transmission opportunities because of PDSCH and DRS multiplexing transmission at a certain base station or a certain carrier can be solved.

Description

A kind of method and device for finding the transmission of reference signal DRS

Technical field

The present invention relates to field of wireless transmission, more particularly, to a kind of method of discovery reference signal DRS transmission And device.

Background technology

Wireless communication transmissions, such as WLAN technologies can be provided in unauthorized frequency range using various transmission technologys Deng.The existing technology and equipment for being transmitted using unauthorized frequency range, in order to ensure that distinct device is accessed The fairness of channel, in the world for the occupation mode of unauthorized frequency range has different regulations to limit.For example, European Frequency Spectrum regulatory agency requires that equipment possesses LBT (Listen Before Talk, first intercept and transmit afterwards) function, First detect whether channel is idle before channel is accessed, will so cause the available resources of transmission services cannot It is guaranteed, so as to cause the quality of service transmitted in unauthorized frequency range to be guaranteed, Consumer's Experience phase To poor.Using the transmission technology of existing mandate frequency spectrum, the such as biography of LTE standard definition in unlicensed spectrum Transferring technology, and using the transmission means for authorizing frequency spectrum to aid in unlicensed spectrum, effectively frequency can will be authorized The reliability of spectrum is combined with the bandwidth resources enriched in unlicensed spectrum, it is ensured that lift system while reliability Handling capacity.Specifically, in order to ensure performances of the LTE in unauthorized frequency range, current protocol requirement adopts carrier wave The mode of polymerization uses LTE transmission technology in unauthorized frequency range, and it is main carrier that order authorizes the carrier wave in frequency range, Make the carrier wave in unauthorized frequency range be subcarrier, realize authorizing the unauthorized frequency range access way of frequency range auxiliary, That is LAA (Licensed Assisted Access authorize auxiliary to access) mode.

Base station side finds under reference signal DRS and physics in the descending transmission of secondary carrier of the unauthorized carrier waves of LAA The transmission of row shared channel PDSCH, DRS and PDSCH is required for using LBT modes.PDSCH is passed The defeated time is longer, and its LBT mode is designed to be needed to meet the requirement that LAA can coexist with WIFI close friend, mesh Category 4 that front 3GPP is defined with it (being kept out of the way based on exponential) as baseline, this LBT mechanism and CSMA/CA (Carrier Sense Multiple Access with Collision Detection, the carrier wave of WIFI Intercept multiple access/conflict avoidance) mode be similar to, belong to the friendly LBT mechanism of comparison, namely compare It is conservative.

It is long in view of the DRS transmission cycles, and each DRS duration can be shorter, therefore DRS Can be to be intercepted and busy channel using the more radical LBT modes of the LBT modes than PDSCH, with reality Existing DRS can have the opportunity to send in each cycle.Such as, the LBT times of DRS can compare PDSCH The LBT times it is shorter, when base station detect a channel it is idle in a shorter time period after can transmission DRS。

In existing 3GPP Rel-12 standards, the structure of Rel-12DRS by cell reference as shown in figure 1, believed Number CRS Port 0, master sync signal PSS, auxiliary synchronous signals SSS and channel state information reference signals CSI-RS is constituted.

In the standardized discussion of Rel-13 LAA, DRS on the unauthorized carrier waves of LAA design can be with The DRS of Rel-12 is configured as benchmark to be strengthened；Specifically set currently for the DRS of Rel-13 LAA Meter does not also determine, but has had following preliminary conclusion：

LBT mechanism is obeyed in the DRS transmission of 1.LAA, but is allowed in a DMTC (DRS measurement Transmission configuration, DRS measure transmission configuration) the multiple DRS transmission opportunitys of configuration in the cycle；

The DRS of 2.LAA is continuously transmitted in time domain, and whether transmission time length is not yet clear and definite less than 1ms, DRS transmission times length can further be studied equal to 1ms or more than 1ms；

3. in the DRS subframes of all candidates of DMTC measure the cycles, the beginning OFDM of DRS is sent (Orthogonal Frequency Division Multiplexing, OFDM) character position keeps one Cause；

4., except allowing DRS individually to send, also allow DRS to be multiplexed in identical subframe with PDSCH Transmission, need to further study DRS and PDSCH how multiplexing transmissions.

LBT mainly serves for ensuring different operator (LAA), the interference of different system (WIFI) to be evaded, and standard gauge is scheduled on In the DRS subframes of all candidates of DMTC measure the cycles, the beginning OFDM symbol of DRS patterns is sent Position consistency, and allow DRS to be multiplexed the transmission in identical subframe with PDSCH.For above-mentioned preliminary knot By LAA allows DRS that multiplexing transmission is carried out in identical subframe with PDSCH, then can bring and ask as follows Topic：

As shown in Fig. 2 being that different base station on the same carrier wave of same operator is unable to showing for simultaneous transmission DRS It is intended to.Referring to Fig. 2, for the different base station on the same carrier wave of same operator, when certain base station has taken When channel carries out the multiplexing transmission of DRS and PDSCH, the TXOP (Transmission of PDSCH transmission Opportunity, send opportunity) sustainable long period (such as TXOP>=4ms), occupy DMTC The major part in cycle (such as 6ms), other base stations need to send and carry out before DRS (not including PDSCH) Channel status is busy state during LBT, and the DRS of other base stations is difficult to obtain transmission opportunity.

Additionally, as shown in figure 3, being that adjacent carrier is unable to simultaneous transmission DRS on the same base station of same operator Schematic diagram.Referring to Fig. 3, for the multiple adjacent carrier wave of the same base station of same operator adjacent frequency leakage is there may be Problem.When busy channel carries out the multiplexing transmission of DRS and PDSCH on certain carrier wave, PDSCH TXOP (such as TXOP of sustainable long period of transmission>=4ms), occupy DMTC cycle (examples Such as 6ms) major part, need to send before DRS (not including PDSCH) on other adjacent carriers of the base station Carry out being disturbed by adjacent frequency during LBT, channel status is busy state, the DRS on other carrier waves is difficult to obtain Transmission opportunity.

In sum, when supporting DRS and PDSCH simultaneous transmissions on the unauthorized carrier waves of LAA, exist due to PDSCH and DRS multiplexing transmissions cause other base stations and carrier wave to lose on some base station or some carrier wave Go the problem of DRS transmission opportunitys.

The content of the invention

In order to solve because PDSCH and DRS multiplexing transmissions cause on some base station or some carrier wave Other base stations and carrier wave lose the problem of DRS transmission opportunitys, the invention provides a kind of find reference signal The method and device of DRS transmission.

In order to solve above-mentioned technical problem, the invention provides a kind of method for finding the transmission of reference signal DRS, The method includes：

Auxiliary is authorized to access on the unauthorized frequency range carrier wave of LAA in LTE system, by DRS multiplexings in letter Road is transmitted to terminal in region, wherein, the channel region at least includes Physical Downlink Shared Channel PDSCH Region, and sending on the orthogonal frequency division multiplex OFDM symbol that the PDSCH region before DRS is located Pre-set the protection interval of part OFDM symbol length.

Optionally, on the unauthorized frequency range carrier wave for authorizing auxiliary to access LAA in LTE system, will DRS multiplexings are transmitted to before terminal in channel region, and methods described also includes：The protection interval is set Position configuration information and the setting protection interval in the OFDM symbol is in the OFDM symbol On time span, wherein, the protection interval is carried in the position configuration information in the OFDM Position on symbol.

Optionally, it is described the position configuration information of the protection interval in the OFDM symbol is set with And arrange after time span of the protection interval in the OFDM symbol, methods described also includes： The position configuration information is sent to the terminal or position configuration information is preserved to by signaling is preset In rule, the corresponding OFDM symbol of the protection interval is pointed to according to the position configuration information by terminal On PDSCH carry out rate-matched, wherein, the position configuration information is carried in the signaling；Pass through Time span of the signaling by the protection interval in the OFDM symbol is sent to terminal or by the time Length is preserved into a preset rules, wherein, the protection interval is carried in the signaling in the OFDM Time span on symbol.

Optionally, in the position configuration information that the protection interval is set in the OFDM symbol, When sending when starting the first OFDM symbol that character position is subframe of DRS, the protection interval position In last OFDM symbol in the previous subframe of DRS places subframe.

Optionally, in the position configuration information that the protection interval is set in the OFDM symbol, When sending when to start character position be not the first OFDM symbol of subframe of DRS, the protection interval In the previous OFDM symbol of the beginning character position of DRS in the subframe.

Optionally, in the time span that the protection interval is set in the OFDM symbol, when On a wherein base station in multiple base stations on same unauthorized carrier wave, DRS is multiplexed in channel region During transmission, the time span of the protection interval is：T_L1≤L_GAP＜ T_L2, wherein, the L_GAPRepresent The time span of the protection interval, the T_L1Represent in LAA the time required to DRS channel-monitorings, institute State T_L2Represent according to LAA first intercept transmit the channel-monitoring of bursty data in LBT mechanism afterwards needed for it is most short The time value that shortest time needed for the channel-monitoring of time and/or WIFI bursty datas is configured.

Optionally, when on the wherein carrier wave in the multiple unauthorized carrier wave of same base station, DRS is multiplexed When transmitting in PDSCH region, the time span of the protection interval is：T_L3≤L_GAP＜ T_L4, wherein, The L_GAPRepresent the time span of the protection interval, the T_L3Represent the DRS channels prison in LAA Listen the transmission of required time and radio-frequency devices and receive between conversion time and value, the T_L4Represent basis Shortest time and/or WIFI needed for the channel-monitoring of bursty data in LBT mechanism are transmitted afterwards in first intercepting for LAA The time value that shortest time needed for the channel-monitoring of bursty data is configured.

According to another aspect of the present invention, present invention also offers a kind of find what reference signal DRS was transmitted Method, is applied to terminal, and methods described includes：

Receive on the unauthorized frequency range carrier wave that auxiliary access LAA is authorized in LTE system that base station sends, it is multiple The DRS transmitted in channel region, wherein, the channel region at least includes Physical Downlink Shared Channel PDSCH region, and sending the orthogonal frequency division multiplex OFDM that the PDSCH region before DRS is located The protection interval of part OFDM symbol length is pre-set on symbol.

Optionally, the auxiliary that authorizes in LTE system for sending in the reception base station accesses the unauthorized of LAA On frequency range carrier wave, before being multiplexed the DRS transmitted in channel region, methods described also includes：Receive base station The signaling of transmission or from a preset rules obtain base station arrange protection interval in the OFDM symbol Position configuration information, and the corresponding OFDM symbols of the protection interval are pointed to according to the position configuration information PDSCH on number carries out rate-matched, wherein, the position is equipped with the signaling and preset rules and is matched somebody with somebody Confidence ceases, and position of the protection interval in the OFDM symbol is carried in the position configuration information； Receive the signaling of base station transmission or the protection interval of base station setting is obtained from a preset rules in the OFDM Time span on symbol, wherein, protection interval is equipped with the signaling and preset rules in the OFDM Time span on symbol.

Optionally, obtain between the protection that base station is arranged in the signaling for receiving base station transmission or from a preset rules It is interposed between in the position configuration information in the OFDM symbol, when the beginning character position for sending DRS is one During the first OFDM symbol of subframe, the protection interval is located in the previous subframe of DRS places subframe Last OFDM symbol on.

Optionally, obtain between the protection that base station is arranged in the signaling for receiving base station transmission or from a preset rules It is interposed between in the position configuration information in the OFDM symbol, when the beginning character position for sending DRS is not one During the first OFDM symbol of individual subframe, the protection interval is located at the beginning sign bit of DRS in the subframe In the previous OFDM symbol put.

Optionally, obtain between the protection that base station is arranged in the signaling for receiving base station transmission or from a preset rules It is interposed between in the time span in the OFDM symbol, when in the multiple base stations on same unauthorized carrier wave On a wherein base station, when DRS multiplexings are transmitted in channel region, the time span of the protection interval is： T_L1≤L_GAP＜ T_L2, wherein, the L_GAPRepresent the time span of the protection interval, the T_L1Table Show in LAA the time required to DRS channel-monitorings, the T_L2Expression is transmitted afterwards according to first intercepting for LAA The channel-monitoring of shortest time and/or WIFI bursty datas needed for the channel-monitoring of bursty data in LBT mechanism The time value that the required shortest time is configured.

Optionally, obtain between the protection that base station is arranged in the signaling for receiving base station transmission or from a preset rules It is interposed between in the time span in the OFDM symbol, when its in the multiple unauthorized carrier wave of same base station In on a carrier wave, when DRS multiplexings are transmitted in channel region, the time span of the protection interval is： T_L3≤L_GAP＜ T_L4, wherein, the L_GAPRepresent the time span of the protection interval, the T_L3Table Show in LAA the time required to DRS channel-monitorings and radio-frequency devices transmission and receive between conversion time And value, the T_L4Represent and first intercept the channel-monitoring that transmits bursty data in LBT mechanism afterwards according to LAA The time value that shortest time needed for the channel-monitoring of required shortest time and/or WIFI bursty datas is configured.

According to another aspect of the present invention, present invention also offers a kind of find what reference signal DRS was transmitted Device, is applied to base station, and described device includes：

Transport module, for authorizing auxiliary to access the unauthorized frequency range carrier wave of LAA in LTE system, will DRS multiplexings are transmitted to terminal in channel region, wherein, the channel region is at least common including physical down Channel PDSCH region is enjoyed, and is sending the OFDM that the PDSCH region before DRS is located The protection interval of part OFDM symbol length is pre-set in OFDM symbol.

Optionally, described device also includes setup module, for arranging the protection interval in the OFDM Time span of the position configuration information and the setting protection interval on symbol in the OFDM symbol, Wherein, position of the protection interval in the OFDM symbol is carried in the position configuration information.

Optionally, described device also includes processing module, for being sent out the position configuration information by signaling Deliver to terminal or the position configuration information is preserved into a preset rules, matched somebody with somebody according to the position by terminal The PDSCH that confidence breath is pointed in the corresponding OFDM symbol of the protection interval carries out rate-matched, its In, the position configuration information is carried in the signaling；By signaling by the protection interval described Time span in OFDM symbol sends and is preserved into a preset rules to terminal or by the time span, Wherein, time span of the protection interval in the OFDM symbol is carried in the signaling.

Optionally, in the setup module, as the head that the beginning character position for sending DRS is a subframe During individual OFDM symbol, the protection interval is located at last in the previous subframe of DRS places subframe In individual OFDM symbol.

Optionally, in the setup module, when the character position that starts for sending DRS is not a subframe During first OFDM symbol, the protection interval is located at the previous of the beginning character position of DRS in the subframe In individual OFDM symbol.

Optionally, in the setup module, when in the multiple base stations on same unauthorized carrier wave wherein On one base station, when DRS multiplexings are transmitted in channel region, the time span of the protection interval is：T_L1 ≤L_GAP＜ T_L2, wherein, the L_GAPRepresent the time span of the protection interval, the T_L1Represent In LAA the time required to DRS channel-monitorings, the T_L2Expression transmit afterwards LBT according to first intercepting for LAA In mechanism needed for the channel-monitoring of shortest time and/or WIFI bursty datas needed for the channel-monitoring of bursty data The time value that shortest time is configured.

Optionally, in the setup module, as wherein in the multiple unauthorized carrier wave of same base station On carrier wave, when DRS multiplexings are transmitted in channel region, the time span of the protection interval is：T_L3≤ L_GAP＜ T_L4, wherein, the L_GAPRepresent the time span of the protection interval, the T_L3Represent in LAA Between the transmission of middle DRS channel-monitorings required time and radio-frequency devices and reception conversion time and value, it is described T_L4Represent according to LAA first intercept transmit the channel-monitoring of bursty data in LBT mechanism afterwards needed for most in short-term Between and/or the time value that is configured of shortest time needed for the channel-monitoring of WIFI bursty datas.

According to another aspect of the present invention, present invention also offers a kind of find what reference signal DRS was transmitted Device, is applied to terminal, and described device includes：

First receiver module, the auxiliary that authorizes in LTE system for receiving base station transmission accesses the non-of LAA Authorize on frequency range carrier wave, be multiplexed the DRS transmitted in channel region, wherein, the channel region is at least wrapped Physical Downlink Shared Channel PDSCH region is included, and is sending what the PDSCH region before DRS was located The protection interval of part OFDM symbol length is pre-set on orthogonal frequency division multiplex OFDM symbol.

Optionally, described device also includes the second receiver module and the 3rd receiver module, and described second receives mould Block is used to receive the signaling of base station transmission or the protection interval of base station setting is obtained from a preset rules described Position configuration information in OFDM symbol, and the protection interval is pointed to according to the position configuration information PDSCH in corresponding OFDM symbol carries out rate-matched, wherein, in the signaling and preset rules The position configuration information is equipped with, the protection interval is carried in the position configuration information described Position in OFDM symbol；3rd receiver module is used to receive the signaling of base station transmission or default from Time span of the protection interval of base station setting in the OFDM symbol is obtained in rule, wherein, it is described Time span of the protection interval in the OFDM symbol is equipped with signaling and preset rules.

Optionally, in second receiver module, when the beginning character position for sending DRS is a subframe First OFDM symbol when, the protection interval be located at DRS places subframe previous subframe on most In latter OFDM symbol.

Optionally, in second receiver module, when the beginning character position for sending DRS is not a son During the first OFDM symbol of frame, the protection interval is located at the beginning character position of DRS in the subframe In previous OFDM symbol.

Optionally, in the 3rd receiver module, when in the multiple base stations on same unauthorized carrier wave On a wherein base station, when DRS multiplexings are transmitted in channel region, the time span of the protection interval is： T_L1≤L_GAP＜ T_L2, wherein, the L_GAPRepresent the time span of the protection interval, the T_L1Table Show in LAA the time required to DRS channel-monitorings, the T_L2Expression is transmitted afterwards according to first intercepting for LAA The channel-monitoring of shortest time and/or WIFI bursty datas needed for the channel-monitoring of bursty data in LBT mechanism The time value that the required shortest time is configured.

Optionally, in the 3rd receiver module, when its in the multiple unauthorized carrier wave of same base station In on a carrier wave, when DRS multiplexings are transmitted in channel region, the time span of the protection interval is： T_L3≤L_GAP＜ T_L4, wherein, the L_GAPRepresent the time span of the protection interval, the T_L3Table Show in LAA the time required to DRS channel-monitorings and radio-frequency devices transmission and receive between conversion time And value, the T_L4Represent and first intercept the channel-monitoring that transmits bursty data in LBT mechanism afterwards according to LAA The time value that shortest time needed for the channel-monitoring of required shortest time and/or WIFI bursty datas is configured.

The invention has the beneficial effects as follows：

The present invention is directed to the unauthorized frequency range carrier waves of LAA, when DRS multiplexings are transmitted in channel region, and believes When road region at least includes PDSCH region, the OFDM that the PDSCH region before DRS is located is being sent The protection interval of part OFDM symbol length is pre-set on symbol.The present invention is by before DRS is sent The OFDM symbol that is located of PDSCH region on pre-set the protection interval of part OFDM symbol length, And due to the uniformity of the beginning OFDM symbol position of transmission DRS on the unauthorized carrier waves of LAA so that LAA In unauthorized frequency range during PDSCH and DRS simultaneous transmissions, the different adjacent base stations of same carrier wave in LAA, Or the DRS on the different adjacent carriers of same base station can carry out quick LBT processes in the protection interval And realize quickly intercepting, so as to the channel for accessing unauthorized frequency range carries out DRS transmission.Additionally, same in LAA On one unauthorized carrier wave on the multiple adjacent unauthorized carrier wave of the DRS of multiple adjacent base stations or same base station DRS can obtain under LBT mechanism justice transmission opportunity, solve due to a certain base station or a certain Other base stations and carrier wave lose DRS transmission opportunitys caused by PDSCH and DRS multiplexing transmissions on individual carrier wave Problem.

Description of the drawings

Fig. 1 represents the structure chart of DRS in existing 3GPP Rel-12 standards；

Fig. 2 represents that the different base station on the same carrier wave of same operator is unable to the schematic diagram of simultaneous transmission DRS；

Fig. 3 represents that carrier wave adjacent on the same base station of same operator is unable to the schematic diagram of simultaneous transmission DRS；

Fig. 4 is represented in embodiments of the invention and is being sent the OFDM that the PDSCH region before DRS is located The schematic diagram of the protection interval of part OFDM symbol length is pre-set on symbol；

Fig. 5 represents the flow chart of the method for the DRS transmission that base station is applied in the second embodiment of the present invention；

Fig. 6 represents that protection interval is located in the previous subframe of DRS places subframe most in embodiments of the invention Schematic diagram in latter OFDM symbol；

Fig. 7 represents that protection interval is located at before the beginning character position of DRS in subframe in embodiments of the invention Schematic diagram in one OFDM symbol；

Fig. 8 represents the flow chart of the method for the DRS transmission that terminal is applied in the fourth embodiment of the present invention；

Fig. 9 represents the structural representation of the device of the DRS transmission that base station is applied in the fifth embodiment of the present invention Figure；And

Figure 10 represents that the structure of the device of the DRS transmission that terminal is applied in the sixth embodiment of the present invention is shown It is intended to.

Specific embodiment

The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing in accompanying drawing The exemplary embodiment of the disclosure, it being understood, however, that may be realized in various forms the disclosure and should not be by Embodiments set forth here is limited.On the contrary, there is provided these embodiments are able to be best understood from this It is open, and can by the scope of the present disclosure it is complete convey to those skilled in the art.

First embodiment

In the present embodiment, the mandate auxiliary in LTE system is accessed on the unauthorized frequency range carrier wave of LAA, DRS multiplexings are transmitted to terminal in channel region, wherein, channel region is at least shared including physical down Channel PDSCH region, and sending the OFDM that the PDSCH region before DRS is located The protection interval of part OFDM symbol length is pre-set in OFDM symbol.

Specifically, PDSCH region can be the data area that PDSCH is carried, and can also be in PDSCH The upper region filled with occupy-place signal, here is simultaneously not specifically limited.Additionally, channel region can also include Physical downlink control channel PDCCH region or enhancement mode Physical Downlink Control Channel EPDCCH regions, i.e., Mandate auxiliary in LTE system is accessed on the unauthorized frequency range carrier wave of LAA, and DRS multiplexings can be existed Transmit to terminal in the region of PDSCH and PDCCH compositions, or by DRS multiplexings in PDSCH and Transmit to terminal in the region of EPDCCH compositions.

In addition, it is specific, as shown in figure 4, being to send the OFDM that the PDSCH region before DRS is located The schematic diagram of the protection interval of part OFDM symbol length is pre-set on symbol.Referring to Fig. 4, when by DRS Multiplexing is in PDSCH region when transmitting, measure in DRS transmission configuration DMTC measurement window it is all Before the DRS of the DRS transmission opportunitys of LAA sends, in the OFDM symbol that PDSCH region is located Pre-set the protection interval of part OFDM symbol length.The setting of the protection interval can cause LAA DRS carry out quickly first intercepting and transmit LBT processes afterwards and realize quickly intercepting, so as to access unauthorized frequency range Channel carry out DRS transmission.

The present embodiment in the OFDM symbol for sending the place of the PDSCH region before DRS by setting in advance The protection interval of part OFDM symbol length is put, and due to sending opening for DRS on the unauthorized carrier waves of LAA The uniformity of beginning OFDM symbol position so that PDSCH and DRS is passed simultaneously in the unauthorized frequency ranges of LAA When defeated, the different adjacent base stations of same carrier wave in LAA, or the DRS on the different adjacent carriers of same base station Quick LBT processes can be carried out in the protection interval and realization is quickly intercepted, so as to access unauthorized frequency range Channel carry out DRS transmission.Additionally, in LAA on same unauthorized carrier wave multiple adjacent base stations DRS Or the DRS on the multiple adjacent unauthorized carrier wave of same base station can obtain justice under LBT mechanism Transmission opportunity, solves due to PDSCH the and DRS multiplexing transmissions on a certain base station or some carrier wave Caused other base stations and carrier wave lose the problem of DRS transmission opportunitys.

Second embodiment

As shown in figure 5, the stream of the method for the DRS transmission to be applied to base station in the second embodiment of the present invention Cheng Tu, the embodiment comprises the steps：

Step 101, arranges protection interval position configuration information on the ofdm symbols and arranges between protection Every time span on the ofdm symbols.

In this step, base station, can when protection interval position configuration information on the ofdm symbols is arranged To start whether character position is the first OFDM symbol of a subframe as basis for estimation according to send DRS Protection interval position on the ofdm symbols is configured, specifically, is carried in the configuration information of position Protection interval position on the ofdm symbols.

Specifically, when when starting the first OFDM symbol that character position is subframe of DRS is sent, protect Shield interval can be arranged in last OFDM symbol in the previous subframe of DRS places subframe. It should be noted that here specifically limits the concrete structure of DRS, i.e. the structure of DRS can be here The DRS structures in 3GPP Rel-12 standards in Fig. 1, or the structure of other forms.In this measure Example is illustrated to the position of protection interval.As shown in fig. 6, being located at DRS places subframe for protection interval The schematic diagram in last OFDM symbol in previous subframe, referring to Fig. 6, it can be seen that (n+1)th DRS is sent on subframe starts the first OFDM symbol that character position is a subframe, before the subframe One subframe is to be provided with protection interval in last OFDM symbol of n-th subframe.Optionally, protect The setting at shield interval can be realized by occupy-place signal.From fig. 6 it can be seen that in figure 6 n-th It is that a protection interval is set in last OFDM symbol in the OFDM symbol of the serial number 13 of subframe, And there are occupy-place signal in the OFDM symbol.

When sending when to start character position be not the first OFDM symbol of subframe of DRS, protection interval Can be arranged in the previous OFDM symbol of beginning character position of DRS in subframe.Here needs explanation , it can be the 3GPP in Fig. 1 that here does not specifically limit the concrete structure of DRS, the i.e. structure of DRS DRS structures in Rel-12 standards, or the structure of other forms.Here is illustrated to protection interval Position illustrates.As shown in fig. 7, the beginning character position of the DRS in subframe is located at for protection interval Schematic diagram in previous OFDM symbol, referring to Fig. 7, on the (n+1)th subframe, serial number 2 and sequence number Not have DRS in 3 OFDM symbol, and there is DRS in the 4th～7 of the subframe the OFDM symbol, I.e. send DRS start character position be located at the subframe on serial number 4 OFDM symbol on, now in order to Ensure the reliability that DRS is transmitted in LBT mechanism, can arrange in the OFDM symbol of serial number 3 Protection interval, likewise, the setting of protection interval can be realized by occupy-place signal.Can from Fig. 7 Go out, a protection interval is set in the OFDM symbol of serial number 3 in the figure 7, and in the OFDM symbol On there are occupy-place signal.

Additionally, this step also sets up protection interval time span on the ofdm symbols.In order to improve LAA The reliability of middle DRS transmission, when protection interval time span on the ofdm symbols is arranged, between protection Every time span to ensure that the DRS in LAA can listen to channel idle during LBT, and WIFI and different operator can be avoided to seize channel.According to the principle, protection interval can under different scenes To arrange different time spans.Specifically, the time span of protection interval is as follows：

When on the wherein base station in the multiple base stations on same unauthorized carrier wave, by DRS multiplexings in channel When transmitting in region, the time span of protection interval is：T_L1≤L_GAP＜ T_L2, wherein, L_GAPRepresent and protect Shield interlude length, T_L1Represent in LAA the time required to DRS channel-monitorings, T_L2Represent root According to LAA first intercept transmit afterwards in LBT mechanism the shortest time needed for the channel-monitoring of bursty data and/or The time value that shortest time needed for the channel-monitoring of WIFI bursty datas is configured.Specifically, T_L2Can be Shortest time, the channel of WIFI bursty datas needed for the channel-monitoring of bursty data in the LBT mechanism of LAA Shortest time needed for the channel-monitoring of bursty data in the LBT mechanism of shortest time and LAA needed for monitoring And the one kind in the minimum of a value needed for the channel-monitoring of WIFI bursty datas between the shortest time.Preferably, T_L2 Could be arranged to shortest time needed for the channel-monitoring of bursty data and WIFI in the LBT mechanism of LAA to happen suddenly Minimum of a value needed for the channel-monitoring of data between the shortest time.This time length is made explanations below.

When adjacent base station does not send PDSCH, DRS carries out quick channel sense before sending, and protects Interlude length is more than or equal to the DRS channel-monitorings required time in LAA (such as during a CAA Gap is at intervals of 9us), the DRS in the LAA of other base stations for enabling to same operator is during LBT Intercept successfully and be successfully transmitted.Additionally, the time span of protection interval is less than the LBT mechanism according to LAA Shortest time needed for the channel-monitoring of middle bursty data (such as 34us) and/or the channel of WIFI bursty datas The time value that is configured of shortest time (such as 34us) needed for monitoring, with avoid the LAA of different operator with And the WIFI of different operator seizes channel.

When on the wherein carrier wave in the multiple unauthorized carrier wave of same base station, by DRS multiplexings in channel region When transmitting in domain, the time span of protection interval is：T_L3≤L_GAP＜ T_L4, wherein, L_GAPRepresent protection Interlude length, T_L3Represent in LAA the time required to DRS channel-monitorings and radio-frequency devices send out Send and receive between conversion time and value, T_L4Expression transmit afterwards LBT mechanism according to first intercepting for LAA It is most short needed for the channel-monitoring of shortest time and/or WIFI bursty datas needed for the channel-monitoring of middle bursty data The time value that time is configured.Specifically, T_L4Can be the letter of bursty data in the LBT mechanism of LAA Monitor required shortest time, the LBT of shortest time and LAA needed for the channel-monitoring of WIFI bursty datas in road It is most short needed for the channel-monitoring of shortest time and WIFI bursty datas needed for the channel-monitoring of bursty data in mechanism One kind in minimum of a value between time.Preferably, T_L2Could be arranged to be happened suddenly in the LBT mechanism of LAA Needed for the channel-monitoring of shortest time and WIFI bursty datas needed for the channel-monitoring of data between the shortest time Minimum of a value.This time length is made explanations below.

Adjacent carrier does not send PDSCH, carries out Fast Channel before transmission DRS and intercepts, and is penetrated due to a set of Frequency wave filter can not simultaneously be received and sent, therefore when same base station attempts to do the fast of DRS in adjacent carrier Before speed is intercepted, radio-frequency devices need the conversion for once being sent with being received, therefore the time of protection interval The time required to DRS channel-monitorings of the length more than or equal to LAA (such as one CAA slot time is 9us) And the transmission and reception conversion time (such as 17us) of radio-frequency devices between and value.While the protection interval Time span the DRS of the LAA of other carrier waves is intercepted in LBT mechanism successfully and is successfully sent out Send.Additionally, the time span of protection interval is less than the channel according to bursty data in the LBT mechanism of LAA Shortest time (such as 34us) and/or shortest time needed for the channel-monitoring of WIFI bursty datas needed for monitoring The time value that (such as 34us) is configured, to avoid the LAA of the different operator and WIFI of different operator Seize channel.

Step 102, position configuration information is sent preserved to one to terminal or by position configuration information by signaling In preset rules.

In this step, after position configuration information sets, can be by way of transmission signaling by position Configuration information sends and is preserved into a preset rules, by terminal according to position to terminal or by position configuration information The PDSCH that configuration information is pointed in the corresponding OFDM symbol of protection interval carries out rate-matched, wherein, Position configuration information is carried in signaling.

Specifically, preset rules can be an agreement, and position configuration information is saved directly in agreement, eventually End directly obtains the position configuration information from agreement.Additionally, the preset rules can also match somebody with somebody for DRS measurements Confidence cease, will position configuration information directly preserve into existing DRS measurement configuration informations, by terminal from Position configuration information is obtained in the DRS measurement configuration informations for getting.Here it should be noted that here simultaneously Concrete restriction is not made to the concrete form of preset rules.

Step 103, sent to terminal by time span of the signaling by protection interval on the ofdm symbols or Time span is preserved into a preset rules.

In this step, specifically, after the time span in protection interval on the ofdm symbols sets, Can sending signaling by way of time span by protection interval on the ofdm symbols send to terminal or Time span is preserved into a preset rules, wherein, protection interval is carried in signaling in OFDM symbol On time span.

Specifically, preset rules can be an agreement, protection interval time span on the ofdm symbols Can be saved directly in agreement, terminal directly obtains the time span from agreement.Additionally, the default rule Then can also be DRS measurement configuration informations, will time span directly preserve to existing DRS measurement configure In information, the time span is obtained from the DRS measurement configuration informations for getting by terminal.Here needs Bright, here does not make concrete restriction to the concrete form of preset rules.

Step 104, authorizes auxiliary to access on the unauthorized frequency range carrier wave of LAA, by DRS in LTE system Multiplexing is transmitted to terminal in channel region.

In this step, specifically, PDSCH region can be the data area that PDSCH is carried, and may be used also Think the region filled with occupy-place signal on PDSCH, here is simultaneously not specifically limited.Additionally, channel region Domain can also include physical downlink control channel PDCCH region or enhancement mode Physical Downlink Control Channel EPDCCH regions, i.e., the mandate auxiliary in LTE system is accessed on the unauthorized frequency range carrier wave of LAA, DRS can be multiplexed and be transmitted to terminal in the region that PDSCH and PDCCH are constituted, or by DRS It is multiplexed and is transmitted to terminal in the region that PDSCH and EPDCCH is constituted.

In addition, in this step, the OFDM that the PDSCH region before DRS is located is being sent The protection interval of part OFDM symbol length is pre-set in OFDM symbol.Due to send DRS it Pre-set in the OFDM symbol that front PDSCH region is located between the protection of part OFDM symbol length Every, therefore when transmitting in the PDSCH region by DRS multiplexings in channel region, the DRS of LAA LBT process realizations can quickly be carried out quickly to intercept, so as to the channel for accessing unauthorized frequency range is transmitted.

The present embodiment by DRS multiplexing transmit in channel region when, by send DRS before The protection interval of part OFDM symbol length is pre-set in the OFDM symbol that PDSCH region is located, And by arranging the time span of protection interval position configuration information on the ofdm symbols and protection interval, So that the DRS of LAA is intercepted successfully during LBT and is successfully transmitted so that on same unauthorized carrier wave The DRS of multiple adjacent base stations has fair transmission opportunity, and causes the multiple adjacent unauthorized of same base station When there is carrier-in-interference on carrier wave, the DRS on multiple unauthorized carrier waves has fair transmission opportunity, it is to avoid Due to other base stations caused by PDSCH the and DRS multiplexing transmissions on some base station or some carrier wave With the problem that carrier wave loses DRS transmission opportunitys.

3rd embodiment

In the present embodiment, terminal receives authorizing in LTE system for base station transmission and aids in accessing the non-of LAA Authorize on frequency range carrier wave, be multiplexed the DRS transmitted in channel region, wherein, channel region at least includes thing Reason DSCH Downlink Shared Channel PDSCH region, and sending the orthogonal of the place of the PDSCH region before DRS The protection interval of part OFDM symbol length is pre-set on frequency division multiplex OFDM symbol.

Specifically, PDSCH region can be the data area that PDSCH is carried, and can also be in PDSCH The upper region filled with occupy-place signal, here is simultaneously not specifically limited.Additionally, channel region can also include Physical downlink control channel PDCCH region or enhancement mode Physical Downlink Control Channel EPDCCH regions, i.e., Terminal can also receive the auxiliary that authorizes in LTE system of base station transmission and access the unauthorized frequency range carrier wave of LAA On, the DRS transmitted in the region that PDSCH and PDCCH is constituted, or multiplexing are multiplexed in PDSCH With the DRS transmitted in the region of EPDCCH compositions.

In addition, it is specific, as shown in figure 4, being to send the OFDM that the PDSCH region before DRS is located The schematic diagram of the protection interval of part OFDM symbol length is pre-set on symbol.Referring to Fig. 4, when by DRS Multiplexing is in PDSCH region when transmitting, measure in DRS transmission configuration DMTC measurement window it is all Before the DRS of the DRS transmission opportunitys of LAA sends, in the OFDM symbol that PDSCH region is located Pre-set the protection interval of part OFDM symbol length.The setting of the protection interval can cause LAA DRS carry out in the protection interval during quick LBT and realize quickly intercepting, it is unauthorized so as to access The channel of frequency range is transmitted.

Terminal in the present embodiment receives the unauthorized frequency range carrier wave that LAA is accessed in mandate auxiliary that base station sends On, it is multiplexed the DRS on channel region, it is ensured that the integrality of PDSCH and DRS multiplexing transmissions.

Fourth embodiment

As shown in figure 8, the flow chart that the DRS to be applied to terminal in fourth embodiment is transmitted, the embodiment Comprise the steps：

Step 201, receives the base station signaling for sending or the protection interval that base station setting is obtained from a preset rules Position configuration information on the ofdm symbols, and it is corresponding to be pointed to protection interval according to position configuration information PDSCH in OFDM symbol carries out rate-matched.

In this step, position configuration information is equipped with signaling and preset rules, is taken in the configuration information of position With protection interval position on the ofdm symbols.Terminal can be by way of reception signaling or pre- from one If obtaining the position configuration information in rule, and after the position configuration information is got, configured according to position The PDSCH that information is pointed in the corresponding OFDM symbol of protection interval carries out rate-matched.

Specifically, the PDSCH that terminal-pair is located in the corresponding OFDM symbol of protection interval carries out speed Do not do at demodulation coding with the PDSCH that can be located in the corresponding OFDM symbol of protection interval for terminal-pair Reason.

Additionally, preset rules can be an agreement, position configuration information is saved directly in agreement, terminal Directly the position configuration information is obtained from agreement.Additionally, the preset rules can also be DRS measurement configurations Information, will position configuration information directly preserve into existing DRS measurement configuration informations, by terminal from obtaining Position configuration information is obtained in the DRS measurement configuration informations got.Here it should be noted that here not Concrete restriction is made to the concrete form of preset rules.

In addition, specific, in the position configuration information that terminal gets, protection interval is in OFDM symbol On position it is as follows：

When starting the first OFDM symbol that character position is subframe of DRS is sent, protection interval can To be arranged in last OFDM symbol in the previous subframe of DRS places subframe.Here needs Illustrate, here does not specifically limit the concrete structure of DRS, the i.e. structure of DRS can be in Fig. 1 DRS structures in 3GPP Rel-12 standards, or the structure of other forms.Here citing is to protection The position at interval illustrates.As shown in fig. 6, the previous subframe for being located at DRS places subframe for protection interval On last OFDM symbol on schematic diagram, referring to Fig. 6, it can be seen that on (n+1)th subframe send out That send DRS starts the first OFDM symbol that character position is a subframe, in the previous subframe of the subframe Protection interval is provided with last OFDM symbol of i.e. n-th subframe.Optionally, protection interval Setting can be realized by occupy-place signal.From fig. 6 it can be seen that the sequence of n-th subframe in figure 6 Number to arrange a protection interval in last OFDM symbol in 13 OFDM symbol, and at this Occupy-place signal is there are in OFDM symbol.

Step 202, receives the base station signaling for sending or the protection interval that base station setting is obtained from a preset rules Time span on the ofdm symbols.

In this step, protection interval is carried in signaling and preset rules in the OFDM symbol Time span, terminal can obtain base by way of receiving the signaling of base station transmission or from a preset rules The protection interval for arranging of standing time span on the ofdm symbols.

Additionally, specific, the time span of protection interval is as follows：

When adjacent base station does not send PDSCH, DRS carries out quick channel sense before sending, and protects Interlude length is more than or equal to the DRS channel-monitorings required time in LAA (such as during a CAA Gap is at intervals of 9us), the DRS in the LAA of other base stations for enabling to same operator is during LBT Intercept successfully and send DRS.Additionally, the time span of protection interval is less than the LBT mechanism according to LAA Shortest time needed for the channel-monitoring of middle bursty data (such as 34us) and/or the channel of WIFI bursty datas The time value that is configured of shortest time (such as 34us) needed for monitoring, with avoid the LAA of different operator with And the WIFI of different operator seizes channel.

Adjacent carrier does not send PDSCH, sending when carry out Fast Channel before DRS and intercepting, due to a set of Radio-frequency filter can not simultaneously be received and sent, therefore when same base station attempts to do DRS's in adjacent carrier Before quickly intercepting, radio-frequency devices need once sent and receive conversion, therefore protection interval when Between the time required to DRS channel-monitorings of the length more than or equal to LAA (such as one CAA slot times be 9us) And the transmission and reception conversion time (such as 17us) of radio-frequency devices between and value.While the protection interval Time span the DRS of the LAA of other carrier waves is intercepted in LBT mechanism successfully and is successfully sent out Send.Additionally, the time span of protection interval is less than the channel according to bursty data in the LBT mechanism of LAA Shortest time (such as 34us) and/or shortest time needed for the channel-monitoring of WIFI bursty datas needed for monitoring The time value that (such as 34us) is configured, to avoid the LAA of the different operator and WIFI of different operator Seize channel.

Step 203, receives the unauthorized frequency range of mandate auxiliary access LAA in LTE system that base station sends On carrier wave, the DRS transmitted in channel region is multiplexed.

In this step, specifically, channel region at least includes Physical Downlink Shared Channel PDSCH region, And set in advance on the orthogonal frequency division multiplex OFDM symbol that the PDSCH region before DRS is located sending Put the protection interval of part OFDM symbol length.

Additionally, specific, PDSCH region can be the data area that PDSCH is carried, can also be Region filled with occupy-place signal on PDSCH, here is simultaneously not specifically limited.Additionally, channel region may be used also With including physical downlink control channel PDCCH region or enhancement mode Physical Downlink Control Channel EPDCCH areas Domain, i.e. terminal can also receive the auxiliary that authorizes in LTE system of base station transmission and access the unauthorized frequency of LAA On Duan Zaibo, the DRS transmitted in the region that PDSCH and PDCCH is constituted is multiplexed, or multiplexing exists The DRS transmitted in the region of PDSCH and EPDCCH compositions.

Terminal in the present embodiment is by receiving protection interval position configuration information on the ofdm symbols and guarantor Shield interlude length so that terminal can receive base station transmission on the unauthorized frequency range carrier wave of LAA, The DRS that multiplexing is transmitted in channel region, it is ensured that the integrality and DRS of PDSCH and DRS multiplexing transmissions The reliability of transmission.

5th embodiment

As shown in figure 9, discovery reference signal DRS to be applied to base station in the fifth embodiment of the present invention is passed The structural representation of defeated device, the device includes：

Transport module 301, for authorizing auxiliary to access the unauthorized frequency range carrier wave of LAA in LTE system, To transmit to terminal in DRS multipling channels region, wherein, the channel region is at least common including physical down Channel PDSCH region is enjoyed, and is sending the OFDM that the PDSCH region before DRS is located The protection interval of part OFDM symbol length is pre-set in OFDM symbol.

Optionally, device also includes setup module 302, for arranging protection interval on the ofdm symbols Position configuration information and setting protection interval time span on the ofdm symbols, wherein, position configuration Protection interval position on the ofdm symbols is carried in information.

Optionally, device also includes processing module 303, for position configuration information being sent to end by signaling End preserves position configuration information into a preset rules, is pointed to protect according to position configuration information by terminal PDSCH in the corresponding OFDM symbol in shield interval carries out rate-matched, wherein, position is carried in signaling Put configuration information；Send to terminal or incite somebody to action by time span of the signaling by protection interval on the ofdm symbols Time span is preserved into a preset rules, wherein, protection interval is carried in signaling on the ofdm symbols Time span.

Optionally, in setup module 302, as the head that the beginning character position for sending DRS is a subframe During individual OFDM symbol, protection interval is located at last OFDM in the previous subframe of DRS places subframe On symbol.

Optionally, in setup module 302, when the character position that starts for sending DRS is not a subframe During first OFDM symbol, protection interval is located at the previous OFDM of the beginning character position of DRS in subframe On symbol.

Optionally, in setup module 302, when in the multiple base stations on same unauthorized carrier wave wherein On one base station, when DRS multiplexings are transmitted in channel region, the time span of protection interval is：T_L1≤ L_GAP＜ T_L2, wherein, L_GAPRepresent the time span of protection interval, T_L1Represent the DRS channels in LAA The time required to monitoring, T_L2Represent and first intercept the channel that transmits bursty data in LBT mechanism afterwards according to LAA Shortest time needed for the channel-monitoring of shortest time and/or WIFI bursty datas needed for monitoring be configured when Between be worth.

Optionally, in setup module 302, as wherein in the multiple unauthorized carrier wave of same base station On carrier wave, when DRS multiplexings are transmitted in channel region, the time span of protection interval is：T_L3≤L_GAP ＜ T_L4, wherein, L_GAPRepresent the time span of protection interval, T_L3Represent the DRS channel-monitorings in LAA Between the transmission of required time and radio-frequency devices and reception conversion time and value, T_L4Represent according to LAA's First intercept and transmit shortest time needed for the channel-monitoring of bursty data and/or WIFI burst numbers in LBT mechanism afterwards According to channel-monitoring needed for the time value that is configured of shortest time.

Sixth embodiment

As shown in Figure 10, it is discovery parameter signal DRS that terminal is applied in the sixth embodiment of the present invention The structural representation of the device of transmission, the device includes：

First receiver module 401, the auxiliary that authorizes in LTE system for receiving base station transmission accesses LAA Unauthorized frequency range carrier wave on, be multiplexed in channel region transmit DRS, wherein, the channel region is extremely Include Physical Downlink Shared Channel PDSCH region less, and send the PDSCH region institute before DRS Orthogonal frequency division multiplex OFDM symbol on pre-set the protection interval of part OFDM symbol length.

Optionally, device also includes the second receiver module 402 and the 3rd receiver module 403, the second receiver module 402 protection intervals for being used to receive the signaling of base station transmission or acquisition base station is arranged from a preset rules exist Position configuration information in OFDM symbol, and it is corresponding to be pointed to protection interval according to position configuration information PDSCH in OFDM symbol carries out rate-matched, wherein, it is equipped with position in signaling and preset rules and matches somebody with somebody Confidence ceases, and protection interval position on the ofdm symbols is carried in the configuration information of position；3rd receives mould The protection interval that block 403 is used to receive the signaling of base station transmission or acquisition base station is arranged from a preset rules exists Time span in OFDM symbol, wherein, protection interval is equipped with signaling and preset rules in OFDM Time span on symbol.

Optionally, in the second receiver module 402, when the beginning character position for sending DRS is a subframe First OFDM symbol when, protection interval be located at DRS places subframe previous subframe on last In OFDM symbol.

Optionally, in the second receiver module 402, when the beginning character position for sending DRS is not a son During the first OFDM symbol of frame, protection interval is located at the previous of the beginning character position of DRS in subframe In OFDM symbol.

Optionally, in the 3rd receiver module 403, when in the multiple base stations on same unauthorized carrier wave On a wherein base station, when DRS multiplexings are transmitted in channel region, the time span of protection interval is：T_L1 ≤L_GAP＜ T_L2, wherein, L_GAPRepresent the time span of protection interval, T_L1Represent the DRS letters in LAA The time required to road is monitored, T_L2Represent and first intercept the letter that transmits bursty data in LBT mechanism afterwards according to LAA What the shortest time needed for the channel-monitoring of shortest time and/or WIFI bursty datas needed for road monitoring was configured Time value.

Optionally, in the 3rd receiver module 403, when its in the multiple unauthorized carrier wave of same base station In on a carrier wave, when DRS multiplexings are transmitted in channel region, the time span of protection interval is：T_L3≤ L_GAP＜ T_L4, wherein, L_GAPRepresent the time span of protection interval, T_L3Represent the DRS channels in LAA Monitor the transmission of required time and radio-frequency devices and receive between conversion time and value, T_L4Represent according to LAA First intercept and transmit in LBT mechanism the shortest time needed for the channel-monitoring of bursty data afterwards and/or WIFI happens suddenly The time value that shortest time needed for the channel-monitoring of data is configured.

Above-described is the preferred embodiment of the present invention, it should be pointed out that for the ordinary people of the art For member, some improvements and modifications can also be made under the premise of without departing from principle of the present invention, these Improvements and modifications are also within the scope of the present invention.

Claims

1. a kind of method for finding the transmission of reference signal DRS, is applied to base station, it is characterised in that the side Method includes：

2. method according to claim 1, it is characterised in that authorize auxiliary in LTE system described Adjuvant grafting enters on the unauthorized frequency range carrier wave of LAA, and DRS multiplexings are transmitted to before terminal in channel region, Methods described also includes：

Position configuration information and the setting protection of the protection interval in the OFDM symbol is set The time span being spaced in the OFDM symbol, wherein, carry in the position configuration information described Position of the protection interval in the OFDM symbol.

3. method according to claim 2, it is characterised in that the protection interval is set exists described Position configuration information and the setting protection interval in the OFDM symbol is in the OFDM symbol Time span after, methods described also includes：

The position configuration information is sent by signaling is preserved to one to terminal or by the position configuration information In preset rules, wherein, the position configuration information is carried in the signaling；

Send to terminal or incite somebody to action by time span of the signaling by the protection interval in the OFDM symbol The time span is preserved into a preset rules, wherein, the protection interval is carried in the signaling and is existed Time span in the OFDM symbol.

4. method according to claim 2, it is characterised in that the protection interval is set exists described In position configuration information in the OFDM symbol,

When sending when starting the first OFDM symbol that character position is subframe of DRS, between the protection Every in last OFDM symbol in the previous subframe of DRS places subframe.

5. method according to claim 2, it is characterised in that the protection interval is set exists described In position configuration information in the OFDM symbol,

When sending when to start character position be not the first OFDM symbol of subframe of DRS, the protection It is located at interval in the previous OFDM symbol of beginning character position of DRS in the subframe.

6. method according to claim 2, it is characterised in that the protection interval is set exists described In time span in the OFDM symbol,

When on the wherein base station in the multiple base stations on same unauthorized carrier wave, by DRS multiplexings in channel When transmitting in region, the time span of the protection interval is：T_L1≤L_GAP＜ T_L2, wherein,

The L_GAPRepresent the time span of the protection interval, the T_L1Represent the DRS letters in LAA The time required to road is monitored, the T_L2Expression transmit afterwards bursty data in LBT mechanism according to first intercepting for LAA Channel-monitoring needed for shortest time and/or WIFI bursty datas channel-monitoring needed for the shortest time set The time value put.

7. method according to claim 2, it is characterised in that the protection interval is set exists described In time span in the OFDM symbol,

When on the wherein carrier wave in the multiple unauthorized carrier wave of same base station, by DRS multiplexings in channel region When transmitting in domain, the time span of the protection interval is：T_L3≤L_GAP＜ T_L4, wherein,

The L_GAPRepresent the time span of the protection interval, the T_L3Represent the DRS letters in LAA Monitor the transmission of required time and radio-frequency devices and receive between conversion time and value, the T in road_L4Represent root According to LAA first intercept transmit afterwards in LBT mechanism the shortest time needed for the channel-monitoring of bursty data and/or The time value that shortest time needed for the channel-monitoring of WIFI bursty datas is configured.

8. a kind of method for finding the transmission of reference signal DRS, is applied to terminal, it is characterised in that the side Method includes：

9. method according to claim 8, it is characterised in that the reception base station send in LTE Authorize auxiliary to access on the unauthorized frequency range carrier wave of LAA in system, be multiplexed the DRS transmitted in channel region Before, methods described also includes：

Receive the signaling of base station transmission or the protection interval of base station setting is obtained from a preset rules described Position configuration information in OFDM symbol, and the protection interval is pointed to according to the position configuration information PDSCH in corresponding OFDM symbol carries out rate-matched, wherein, in the signaling and preset rules The position configuration information is equipped with, the protection interval is carried in the position configuration information described Position in OFDM symbol；

Receive the signaling of base station transmission or the protection interval of base station setting is obtained from a preset rules described Time span in OFDM symbol, wherein, protection interval is equipped with the signaling and preset rules in institute State the time span in OFDM symbol.

10. method according to claim 9, it is characterised in that receive signaling that base station sends or from During position configuration information of the protection interval of base station setting in the OFDM symbol is obtained in one preset rules,

11. methods according to claim 9, it is characterised in that receive base station send signaling or from During position configuration information of the protection interval of base station setting in the OFDM symbol is obtained in one preset rules,

12. methods according to claim 9, it is characterised in that receive base station send signaling or from During time span of the protection interval of base station setting in the OFDM symbol is obtained in one preset rules,

13. methods according to claim 9, it is characterised in that receive base station send signaling or from During time span of the protection interval of base station setting in the OFDM symbol is obtained in one preset rules,

A kind of 14. devices for finding the transmission of reference signal DRS, are applied to base station, it is characterised in that described Device includes：

Transport module, for authorizing auxiliary to access the unauthorized frequency range carrier wave of LAA in LTE system, will DRS multiplexings are transmitted to terminal in channel region, wherein, the channel region is at least common including physical down Channel PDSCH region is enjoyed, and is sending the orthogonal frequency division multiplexing that the PDSCH region before DRS is located With the protection interval that part OFDM symbol length is pre-set in OFDM symbol.

15. devices according to claim 14, it is characterised in that described device also includes setup module, For arranging position configuration information and the setting protection of the protection interval in the OFDM symbol The time span being spaced in the OFDM symbol, wherein, carry in the position configuration information described Position of the protection interval in the OFDM symbol.

16. devices according to claim 15, it is characterised in that described device also includes processing module, Preserve to one to terminal or by the position configuration information for being sent the position configuration information by signaling In preset rules, the corresponding OFDM of the protection interval is pointed to according to the position configuration information by terminal PDSCH on symbol carries out rate-matched, wherein, the position configuration information is carried in the signaling； Sent to terminal or will be described by time span of the signaling by the protection interval in the OFDM symbol Time span is preserved into a preset rules, wherein, the protection interval is carried in the signaling described Time span in OFDM symbol.

17. devices according to claim 15, it is characterised in that in the setup module, when send out When starting the first OFDM symbol that character position is subframe of DRS is sent, the protection interval is located at institute State in last OFDM symbol in the previous subframe of DRS places subframe.

18. devices according to claim 15, it is characterised in that in the setup module, when send out When to start character position be not the first OFDM symbol of subframe of DRS is sent, the protection interval is located at In the subframe in the previous OFDM symbol of the beginning character position of DRS.

19. devices according to claim 15, it is characterised in that in the setup module, when On a wherein base station in multiple base stations on same unauthorized carrier wave, DRS multiplexings are passed in channel region When defeated, the time span of the protection interval is：T_L1≤L_GAP＜ T_L2, wherein, the L_GAPRepresent institute State the time span of protection interval, the T_L1Represent in LAA the time required to DRS channel-monitorings, it is described T_L2Represent according to LAA first intercept transmit the channel-monitoring of bursty data in LBT mechanism afterwards needed for most in short-term Between and/or the time value that is configured of shortest time needed for the channel-monitoring of WIFI bursty datas.

20. devices according to claim 15, it is characterised in that in the setup module, when On a wherein carrier wave in the multiple unauthorized carrier wave of same base station, DRS multiplexings are transmitted in channel region When, the time span of the protection interval is：T_L3≤L_GAP＜ T_L4, wherein, the L_GAPRepresent described The time span of protection interval, the T_L3Represent in LAA the time required to DRS channel-monitorings and RF device Between the transmission of part and reception conversion time and value, the T_L4Expression is transmitted afterwards according to first intercepting for LAA The channel-monitoring of shortest time and/or WIFI bursty datas needed for the channel-monitoring of bursty data in LBT mechanism The time value that the required shortest time is configured.

A kind of 21. devices for finding the transmission of reference signal DRS, are applied to terminal, it is characterised in that described Device includes：

First receiver module, the auxiliary that authorizes in LTE system for receiving base station transmission accesses the non-of LAA Authorize on frequency range carrier wave, be multiplexed the DRS transmitted in channel region, wherein, the channel region is at least wrapped Physical Downlink Shared Channel PDSCH region is included, and is located the PDSCH region before DRS is sent Orthogonal frequency division multiplex OFDM symbol on pre-set the protection interval of part OFDM symbol length.

22. devices according to claim 21, it is characterised in that described device is also received including second Module and the 3rd receiver module, second receiver module is used to receive the signaling of base station transmission or default from Position configuration information of the protection interval that acquisition base station is arranged in rule in the OFDM symbol, and according to The PDSCH that the position configuration information is pointed in the corresponding OFDM symbol of the protection interval enters scanning frequency Rate is matched, wherein, the position configuration information is equipped with the signaling and preset rules, the position is matched somebody with somebody Position of the protection interval in the OFDM symbol is carried in confidence breath；3rd receiver module For receive base station transmission signaling or from a preset rules obtain base station arrange protection interval described Time span in OFDM symbol, wherein, protection interval is equipped with the signaling and preset rules in institute State the time span in OFDM symbol.

23. devices according to claim 22, it is characterised in that in second receiver module, When sending when starting the first OFDM symbol that character position is subframe of DRS, the protection interval position In last OFDM symbol in the previous subframe of DRS places subframe.

24. devices according to claim 22, it is characterised in that in second receiver module, When sending when to start character position be not the first OFDM symbol of subframe of DRS, the protection interval In the previous OFDM symbol of the beginning character position of DRS in the subframe.

25. devices according to claim 22, it is characterised in that in the 3rd receiver module, When on the wherein base station in the multiple base stations on same unauthorized carrier wave, by DRS multiplexings in channel region During middle transmission, the time span of the protection interval is：T_L1≤L_GAP＜ T_L2, wherein, the L_GAPTable Show the time span of the protection interval, the T_L1Represent in LAA the time required to DRS channel-monitorings, The T_L2Represent according to LAA first intercept transmit the channel-monitoring of bursty data in LBT mechanism afterwards needed for most The time value that shortest time needed for the channel-monitoring of short time and/or WIFI bursty datas is configured.

26. devices according to claim 22, it is characterised in that in the 3rd receiver module, When on the wherein carrier wave in the multiple unauthorized carrier wave of same base station, by DRS multiplexings in channel region During transmission, the time span of the protection interval is：T_L3≤L_GAP＜ T_L4, wherein, the L_GAPRepresent The time span of the protection interval, the T_L3Expression the time required to DRS channel-monitorings and is penetrated in LAA Between the transmission of frequency device and reception conversion time and value, the T_L4Represent according to after first the intercepting of LAA The channel of shortest time and/or WIFI bursty datas needed for the channel-monitoring of bursty data in transmission LBT mechanism The time value that shortest time needed for monitoring is configured.