CN108023695A

CN108023695A - A kind of transmission method of synchronizing signal, dispensing device, terminal and system

Info

Publication number: CN108023695A
Application number: CN201610956237.6A
Authority: CN
Inventors: 刘星; 郝鹏; 毕峰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-11-03
Filing date: 2016-11-03
Publication date: 2018-05-11

Abstract

The invention discloses a kind of transmission of synchronizing signal, dispensing device, terminal and system, method includes：Base station or transmission node TRP determine the first subcarrier spacing and the second subcarrier spacing；The base station or TRP send the first synchronizing signal with the first subcarrier spacing；The base station or TRP send the second synchronizing signal with the second subcarrier spacing；Wherein, first subcarrier spacing is subcarrier spacing known to end side；Second subcarrier spacing is the subcarrier spacing determined by base station or TRP.

Description

A kind of transmission method of synchronizing signal, dispensing device, terminal and system

Technical field

The present invention relates to the simultaneous techniques in the communications field, more particularly to a kind of transmission method of synchronizing signal, transmission dress Put, terminal and system.

Background technology

With the continuous progress of radiotechnics, various radio traffics emerge in multitude, and radio traffic institute The frequency spectrum resource of support is limited, bandwidth demand is continuously increased in face of people, in future wireless system, it will is used The carrier frequency of carrier frequency higher communicates used by than forth generation (4G) communication system, such as 28GHz, 45GHz, 70GHz etc., it is larger that there is this high frequency channel Free propagation to be lost, and easily by oxygen absorption, being declined by rain influences the shortcomings of big, The covering performance of high frequency communication system is seriously affected.But since the corresponding carrier frequency of high-frequency communication has shorter ripple It is long, it is possible to more antenna elements can be accommodated on guarantor unit's area, and more antenna elements mean to use The method of wave beam forming improves antenna gain, so as to ensure the covering performance of high-frequency communication.

Due in new generation of wireless access technology (NR, New RAT), comprising wider array of band limits by hundreds of million to up to a hundred Ghz, and need to be multiplexed the type of service (such as Embb, URLLC, mMTC etc.) of a variety of different demands, it is poor to adapt to large span frequency range The different demands of different larger transmission characteristic and different service types, can introduce a variety of frame parameter numerology configurations, and Coexisted in same carrier wave.For synchronizing signal and equally, under different frequency ranges, different deployment scenarios, synchronizing signal Preferable subcarrier spacing is also had any different.Consider from this angle, if allowing base station according to current deployed environment come clever The subcarrier spacing of selection synchronizing signal living, it will reach more preferably performance, such as synchronization accuracy demand, cell searching time delay Demand etc..But this can bring terminal higher complexity, because terminal is needed for each frequency sweep point on frequency domain, and time domain Blind examination is carried out by different subcarrier spacings on each sampled point, this is that terminal is beyond affordability.How detection essence is being ensured The blind examination complexity of terminal is reduced on the premise of degree performance to be one and has to consider and solve the problems, such as.

The content of the invention

In view of this, it is an object of the invention to provide a kind of transmission method of synchronizing signal, dispensing device, terminal and it is System, can at least solve the above-mentioned problems in the prior art.

To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：

An embodiment of the present invention provides a kind of transmission method of synchronizing signal, including：

Base station or transmission node TRP determine the first subcarrier spacing and the second subcarrier spacing；

The base station or TRP send the first synchronizing signal with the first subcarrier spacing；

The base station or TRP send the second synchronizing signal with the second subcarrier spacing；

Wherein, first subcarrier spacing is predefined by system；Second subcarrier spacing is true by base station or TRP It is fixed.

Terminal detects the first synchronizing signal with the first subcarrier spacing；

After the terminal detects first synchronizing signal, the second synchronizing signal is detected with the second subcarrier spacing；

An embodiment of the present invention provides a kind of dispensing device, the dispensing device includes：

Control unit, for determining the first subcarrier spacing and the second subcarrier spacing；Wherein, first subcarrier Interval is predefined by system；Second subcarrier spacing is determined by base station or TRP；

First synchronizing signal transmitting element, for sending the first synchronizing signal with the first subcarrier spacing；

Second synchronizing signal transmitting element, for sending the second synchronizing signal with the second subcarrier spacing.

An embodiment of the present invention provides a kind of terminal, the terminal includes：

First detection unit, for detecting the first synchronizing signal with the first subcarrier spacing；

Second detection unit, it is same with the detection second of the second subcarrier spacing after detecting first synchronizing signal Walk signal；

Wherein, first subcarrier spacing is known subcarrier spacing；Second subcarrier spacing is by base station Or the subcarrier spacing that TRP is determined.

An embodiment of the present invention provides a kind of Transmission system of synchronizing signal, the system comprises：

Dispensing device, for determining the first subcarrier spacing and the second subcarrier spacing；Wherein, first subcarrier Interval is predefined by system；Second subcarrier spacing is determined by base station or TRP；It is same that first is sent with the first subcarrier spacing Walk signal；Second synchronizing signal is sent with the second subcarrier spacing；

Terminal, for detecting the first synchronizing signal with the first subcarrier spacing；After detecting first synchronizing signal, with Second subcarrier spacing detects the second synchronizing signal.

An embodiment of the present invention provides a kind of transmission method of synchronizing signal, dispensing device, terminal and system, base station or biography Defeated node is flexibly determined by sending the first synchronizing signal on predefined running time-frequency resource with predefined subcarrier spacing The subcarrier spacing of second synchronizing signal, by the above-mentioned means, on the one hand, base station can flexibly select synchronizing signal to launch institute The subcarrier spacing of use, so as to ensure that the precision synchronously detected；On the other hand, end side is enabled to be based on known The first subcarrier spacing obtain the first synchronizing channel, so as to as far as possible be preferably minimized blind examination complexity, save terminal Expense.

Brief description of the drawings

Fig. 1-1 is the transmission method flow diagram one of synchronizing signal of the embodiment of the present invention；

Fig. 1-2 is the transmission method flow diagram two of synchronizing signal of the embodiment of the present invention；

Fig. 2 is resource schematic diagram 1 provided in an embodiment of the present invention；

Fig. 3 is resource schematic diagram 2 provided in an embodiment of the present invention；

Fig. 4 is resource schematic diagram 3 provided in an embodiment of the present invention；

Fig. 5 is resource schematic diagram 4 provided in an embodiment of the present invention；

Fig. 6 is resource schematic diagram 5 provided in an embodiment of the present invention；

Fig. 7 is resource schematic diagram 6 provided in an embodiment of the present invention；

Fig. 8 is resource schematic diagram 7 provided in an embodiment of the present invention；

Fig. 9 is resource schematic diagram 8 provided in an embodiment of the present invention；

Figure 10 is resource schematic diagram 9 provided in an embodiment of the present invention；

Figure 11 is resource schematic diagram 10 provided in an embodiment of the present invention；

Figure 12 is resource schematic diagram 11 provided in an embodiment of the present invention；

Figure 13 is resource schematic diagram 12 provided in an embodiment of the present invention；

Figure 14 is resource schematic diagram 13 provided in an embodiment of the present invention；

Figure 15 is resource schematic diagram 14 provided in an embodiment of the present invention；

Figure 16 is resource schematic diagram 15 provided in an embodiment of the present invention；

Figure 17 is resource schematic diagram 16 provided in an embodiment of the present invention；

Figure 18 is resource schematic diagram 17 provided in an embodiment of the present invention；

Figure 19 forms structure diagram for dispensing device of the embodiment of the present invention；

Figure 20 forms structural representation for terminal of the embodiment of the present invention；

Figure 21 forms structural representation for system of the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawings and specific embodiment the present invention is further described in more detail.

Embodiment one,

An embodiment of the present invention provides a kind of transmission method of synchronizing signal, as Figure 1-1, the described method includes：

Step 11：Base station or transmission node TRP determine the first subcarrier spacing and the second subcarrier spacing；

Step 12：Base station or transmission node TRP send the first synchronizing signal with the first subcarrier spacing；

Step 13：The base station or TRP send the second synchronizing signal with the second subcarrier spacing.

The present embodiment is applied in base station or transmission node TRP.

Wherein, first subcarrier spacing is at least corresponding with the band limits belonging to system working frequency points, and described Correspondence between one subcarrier spacing and band limits is well known to base station and terminal.The method further includes：The base Stand or TRP determines the second subcarrier spacing according at least one of：Deployment scenario, coverage, frequency deviation.

Specifically, the first subcarrier spacing：It is that system is predefined with the relevant subcarrier spacing of frequency range, in same carrier wave The business of different frame parameters shares the first synchronizing signal under first frame parameter.For example, wrapped on a certain 30GHz frequency ranges carrier wave Business transmission containing three subcarrier spacings：15khz, 30khz, 60khz, according to the band limits (30GHz) of current carrier, are Subcarrier spacing is 60khz used by system predefines the first synchronizing signal.Then all or part of different sons on the carrier wave Business under carrier wave interval, all detects first synchronizing signal under 60khz.

Second subcarrier spacing：Be send the second synchronizing signal used by subcarrier spacing, the second subcarrier spacing by Base station or transmission node flexibly determine that base station or transmission node can flexibly be determined according to actual deployment and net synchronization capability demand What subcarrier spacing is second synchronizing signal is sent with, following taking because of the usually definite subcarrier spacing can be contemplated in base station Value：Such as deployment scenario, coverage, frequency deviation, timing accuracy demand, Frequency Synchronization accuracy requirement, the level of resources utilization etc..Example Such as, base station determines that the second subcarrier spacing is 30khz after considering above-mentioned factor, then it is same will to send second with 30khz for base station Walk signal.

First synchronizing signal is sent with second synchronizing signal with the identical cycle；

Wherein, first synchronizing signal is master sync signal, takes fixed running time-frequency resource, and first synchronizing signal carries For at least one of：Symbol Timing, Frequency Synchronization, at least part of the information instruction of cell ID；Second synchronizing signal At least one following information is provided for the second synchronizing signal described in auxiliary synchronous signals：Subframe timing (determines sub-frame boundary), nothing Line frame timing (determines radio frame boundaries), at least part of the information instruction of cell ID, Time and Frequency Synchronization.

First synchronizing signal：For first order synchronizing signal, such as similar to the master sync signal PSS in LTE system, take solid Determine running time-frequency resource, its function includes following one or more：Symbol Timing, Frequency Synchronization, partial cell identification information (i.e. cell Mark in group) instruction, the demodulated reference signal of the second synchronizing signal.

The value of second subcarrier spacing is indicated by first synchronizing signal；

Wherein, it is described to indicate that the value of second subcarrier spacing includes by first synchronizing signal：Utilize The sequence of one synchronizing signal indicates the value of second subcarrier spacing, and/or, carried using the son of the first synchronous signal sequence Ripple mapping mode indicates the value of second subcarrier spacing.

For example, PSS includes 3 optional sequences, each corresponds to a value of SSS subcarrier spacings, specifically, PSS sequences 1 correspond to 15khz, and sequence 2 corresponds to 30khz, and sequence 3 corresponds to 60khz.Another way, utilizes the first synchronizing signal sequence The subcarrier maps mode of row indicates, specifically, same PSS sequences 1 are from low frequency point subcarrier to high frequency points subcarrier maps Represent a subcarrier spacings, point subcarrier maps represent between another sub-carrier PSS sequences 1 from high frequency points subcarrier to low frequency Every.It is same both can be with the subcarrier spacing of the second synchronizing signal of joint instructions, as shown in table 1.

Table 1

SSS subcarrier spacings	PSS sequences	PSS sequence mapping modes
			15khz	Sequence 1	Mapping mode 1
30khz	Sequence 1	Mapping mode 2
			60khz	Sequence 2	Mapping mode 1
120khz	Sequence 2	Mapping mode 2
			240khz	Sequence 3	Mapping mode 1
...	Sequence m	Mapping mode n

In addition, PSS sequences can also predefine the set for being used to refer to a SSS subcarrier spacing, such as PSS sequences 1 Corresponding SSS subcarrier spacings 15khz, 30khz；PSS sequences 2 correspond to SSS subcarrier spacings 60khz, 120khz, etc..In this way, Terminal is when detecting SSS, it is necessary to the blind examination in set, such as UE detection PSS sequences are sequence 1, then the blind examination for SSS only needs The subcarrier spacing in set { 15khz, 30khz } is attempted, this can also reduce the complexity of terminal blind examination SSS to a certain extent Degree.

Second synchronizing signal：For second level synchronizing signal, such as similar to the auxiliary synchronous signals SSS in LTE system, function Including following one or more：Subframe timing, wireless frame timing, partial cell identification information (i.e. cell group identification) instruction, essence True Time and Frequency Synchronization.Wherein on accurate Time and Frequency Synchronization, since the son that base station is determined according to actual deployment and net synchronization capability demand carries Wave spacing, therefore, can reach expected performance requirement, i.e., expected Time and Frequency Synchronization precision.

First synchronizing signal is sent with second synchronizing signal with the identical cycle, in specification subsequent content, First synchronizing signal is represented with PSS, SSS is represented exemplified by the second synchronizing signal to describe.

There may be the position relationship of the following two kinds form：First synchronizing signal shown in Fig. 2 is located at phase with the second synchronizing signal In same block synchronization time (SS block), multiplex mode can be TDM or FDM, and one or more SS block form one Section a synchronization time (SS burst), the synchronization of identical or different port can be sent in the different SS block in SSburst Signal.

The composition trace interval of first synchronizing signal and the second synchronizing signal shown in Fig. 3 independently, but it is corresponding The first synchronizing signal and the second synchronizing signal there is fixed position relationship.

It is described that " synchronization time, section SS burst ", were referred to as " trace interval sweeping time Interval ", alternatively, " scanning subframe sweeping subframe ", alternatively, " beam scanning time interval beam Sweeping time interval ", or " beam scanning subframe beam sweeping subframe "；" synchronization time block SS block " are referred to as " sweep time block sweeping time block ", or " scanning block sweeping block " Either " beam scanning time block beam sweeping time block " or " beam scanning block beam sweeping block”。

Synchronizing signal (SS, synchronizing signal) is included in each SS block, may be used also in SS block Other signals or channel can be multiplexed, such as PBCH and corresponding demodulated reference signal, it is also possible to include data and other ginsengs Examine signal.Wherein synchronizing signal can be divided into first/second synchronizing signal two-stage；Both SS and SI can be time-multiplexed, i.e., each Different symbols, or frequency division multiplexing are accounted for, that is, takes same-sign.

One or more SS block are included in each SS burst, for sending multiple beam direction/ports respectively SS, or send the SS of same port/beam direction.One or more SS among may search in terminal synchronization process Synchronizing signal in block, and SI is further received, obtain the down-going synchronous to whole system.

The value of second subcarrier spacing is indicated by the 3rd synchronizing signal；

Wherein, it is described by the 3rd synchronizing signal indicate the value of second subcarrier spacing include it is following at least it One：

3rd synchronizing signal is used definite sequence and is sent with second subcarrier spacing, true for terminal blind examination The value of fixed second subcarrier spacing, wherein the definite sequence can be the predefined sequence of system or with it is described The identical sequence of first synchronizing signal；

Second subcarrier spacing is indicated using the sequence of the 3rd synchronizing signal；

Taking for second subcarrier spacing is indicated using the subcarrier maps mode of the 3rd synchronous signal sequence Value.

3rd synchronizing signal possesses default time-frequency location relation with first synchronizing signal.

Embodiment two,

It is as shown in Figs. 1-2, described applied to terminal an embodiment of the present invention provides a kind of transmission method of synchronizing signal Method includes：

Step 21：Terminal detects the first synchronizing signal with the first subcarrier spacing；

Step 22：It is synchronous with the second subcarrier spacing detection second after the terminal detects first synchronizing signal Signal.

Wherein, first subcarrier spacing is subcarrier spacing known to end side；Second subcarrier spacing is The subcarrier spacing determined by base station or TRP.

The terminal is according to the running time-frequency resource position that successfully be detected first synchronizing signal, and default described Opposite time-frequency location relation between two synchronizing signals and first synchronizing signal, determines the time-frequency money of second synchronizing signal Source position, and detect second synchronizing signal.

The terminal by identifying that the sequence of first synchronizing signal obtains the value of second subcarrier spacing, And/or the terminal obtains second son by identifying the subcarrier maps mode of first synchronous signal sequence and carries The value of wave spacing.

Detection second synchronizing signal includes：

The terminal utilizes the second synchronizing signal described in different subcarrier spacing blind examinations；

Alternatively,

The terminal detects second synchronizing signal using default subcarrier spacing；Wherein described default subcarrier Obtained at intervals of from first synchronizing signal or the 3rd synchronizing signal.

Wherein, first synchronizing signal is master sync signal, takes fixed running time-frequency resource, and first synchronizing signal carries For at least one of：Symbol Timing, Frequency Synchronization, at least part of the information instruction of cell ID；Second synchronizing signal For auxiliary synchronous signals, second synchronizing signal provides at least one of：Subframe timing, wireless frame timing, cell ID At least information indicates, accurate Time and Frequency Synchronization.

First synchronizing signal：For first order synchronizing signal, such as similar to the master sync signal PSS in LTE system, take solid Determine running time-frequency resource, its function includes following one or more：Symbol Timing, Frequency Synchronization, the instruction of partial cell identification information are (small Mark in district's groups), the demodulated reference signal of the second synchronizing signal.

Table 1

First synchronizing signal is sent with second synchronizing signal with the identical cycle, wherein, described first is synchronous Signal is master sync signal, takes fixed running time-frequency resource, its function includes following one or more：Symbol Timing, Frequency Synchronization, At least part of the information instruction of cell ID；Second synchronizing signal is auxiliary synchronous signals, and function is included with the next item down or more ：Subframe timing, wireless frame timing, at least part of the information instruction of cell ID, accurate Time and Frequency Synchronization.

Second synchronizing signal：For second level synchronizing signal, such as similar to the auxiliary synchronous signals SSS in LTE system, function Including following one or more：Subframe timing, wireless frame timing, partial cell identification information instruction (cell group identification), accurately Time and Frequency Synchronization.Wherein on accurate Time and Frequency Synchronization, the subcarrier determined due to base station according to actual deployment and net synchronization capability demand Interval, therefore, can reach expected performance requirement.

The terminal is obtained between second subcarrier at least one in the following manner using the 3rd synchronizing signal Every value：

3rd synchronizing signal is used definite sequence and is sent with second subcarrier spacing, and terminal blind examination determines Subcarrier spacing used by 3rd synchronizing signal, so that the value of second subcarrier spacing is obtained, wherein described Definite sequence can be the predefined sequence of system or the sequence identical with first synchronizing signal；

Second subcarrier spacing is obtained by identifying the sequence of the 3rd synchronizing signal；

Second subcarrier spacing is obtained by identifying the subcarrier maps mode of the 3rd synchronous signal sequence Value.

There are default time-frequency location relation with first synchronizing signal for 3rd synchronizing signal.

Embodiment three,

The synchronizing signal structure corresponding to the present embodiment is illustrated in figure 4, PSS/SSS described herein uses TDM multiplexing sides Formula, and PSS subcarrier spacings are more than the situation of SSS subcarrier spacings, SSS and PSS ensures to take same band：Sequence length phase Together, SSS intervals map.(mode of the subcarrier spacing of explanation PSS instructions SSS, additional notes PSS is not indicated, by UE blind examinations The subcarrier spacing of SSS can also)；

Base station is currently operating in 28GHz, and system predefines the frequency range frequency range where this frequency point Subcarrier spacing is 30khz used by (such as 10GHz-30GHz) PSS.

Base station sends PSS according to predefined subcarrier spacing 30KHz in fixed running time-frequency resource position, and system predefines Son carries used by PSS and SSS is multiplexed by the way of TDM, and base station indicates SSS using PSS sequences in the present embodiment Wave spacing, it is as shown in the table.Base station determines to send SSS with 15khz according to current deployed environment.Therefore, when sending PSS, Using sequence 1.

Table 2

SSS subcarrier spacings	PSS sequences
		15khz	Sequence 1
30khz	Sequence 2
		60khz	Sequence 3

Terminal detects PSS with predefined 30khz, terminal there is known optional three sequences of PSS and every sequence with Mapping relations between SSS subcarrier spacings, therefore, terminal is done related with three sequences to the signal received respectively, is worked as Sequence is sequence 1 used by preceding PSS.Hence, it can be determined that the subcarrier spacing of SSS is 15khz.

In addition, terminal is by detecting PSS, equally completes other functions, such as sign synchronization, the acquisition of ID in group, Thick synchronization of frequency etc..

System predefines the mapping relations between SSS time-frequency domains position and PSS time-frequency domains position, in the present embodiment, SSS with PSS is multiplexed using TDM modes, and the bandwidth that SSS is identical with PSS holdings (SSS is identical with PSS sequence lengths).Therefore, as schemed Shown in 4, SSS maps (preferably equally spaced mapping) with subcarrier into between-line spacing, i.e., since PSS subcarrier spacings are SSS 2 times of carrier wave interval, therefore, every one SSS sequential element of a subcarrier maps.Carried if PSS subcarrier spacings are SSS 4 times of wave spacing, then in order to meet the bandwidth equal with PSS occupancy, two neighboring SSS sequential elements are needed into between-line spacing 3 The mapping of subcarrier.In time domain, duration and the subcarrier spacing of SSS have correspondence, such as 15khz subcarrier spacings pair Answer 66.67us (without considering CP parts).Assuming that the CP of symbol where SSS takes 144 sampled points, 4.69us.

Terminal further with 15khz, receives SSS signals, and carry out with SSS on the time-frequency domain position where above-mentioned SSS Coherent detection.Further identify cell group ID, and further time-frequency essence is synchronous.Complete the detection process of downlink synchronous signal.

Example IV

The synchronizing signal structure corresponding to the present embodiment is illustrated in figure 5, PSS/SSS described herein uses TDM multiplexing sides Formula, and PSS subcarrier spacings are more than the situation of SSS subcarrier spacings, bandwidth identical with PSS holdings occupancy SSS：Sequence length Difference, SSS Continuous Mappings.

System is predefined PSS and is still launched using 30khz subcarrier spacings, and base station determines that the subcarrier spacing of SSS is 15khz.Base station indicates the subcarrier spacing of SSS still according to the mode in embodiment 1.Difference is, is kept in PSS and SSS During same band, SSS sequence lengths (such as 124) are two times of PSS sequence lengths (such as 62), and therefore, SSS is connected with subcarrier Continuous mapping.

PSS is still detected in end side in a predefined way, and identifies the resource where SSS and used sub- load Wave spacing, and it is related to the SSS signals received with potential SSS sequences in the present embodiment, complete the detection to SSS.

Note：In the present embodiment, in order to ensure that SSS is identical with the bandwidth of PSS, the sequence length of SSS is different from PSS, above Describe when SSS subcarrier spacings are less than PSS, sequence length of the sequence length more than PSS of SSS, such as PSS60khz, SSS30khz, PSS sequence length are 62, and the sequence length of SSS is 124.If SSS subcarrier spacings are more than PSS, SSS Sequence length be less than PSS sequence length, such as PSS60khz, SSS120khz, PSS sequence length be 124, the sequence of SSS Row length can be defined as 62.Under this mode, the subcarrier spacing that the sequence length of SSS is chosen with it is different and has change Change, UE is when with corresponding subcarrier spacing blind examination, it is necessary to change and the relevant sequence lengths of SSS at the same time.

Embodiment five

The multiplex mode of second synchronizing signal and first synchronizing signal is：Time division multiplexing tdm, alternatively, frequency division It is multiplexed FDM.

Wherein, the multiplex mode of second synchronizing signal and first synchronizing signal is default multiplex mode；

Alternatively,

The multiplex mode of second synchronizing signal and first synchronizing signal is indicated by first synchronizing signal.

The synchronizing signal structure corresponding to the present embodiment is illustrated in figure 6, PSS/SSS described herein uses TDM multiplexing sides Formula, and PSS subcarrier spacings are less than the situation of SSS subcarrier spacings.

Base station is currently operating in 60GHz, and system predefines the frequency range frequency range where this frequency point Subcarrier spacing is 60khz used by (such as 50GHz-60GHz) PSS.

Base station sends PSS, and this implementation in fixed running time-frequency resource position according to predefined subcarrier spacing 60KHz Subcarrier spacing used by base station indicates SSS using PSS sequences in example, it is as shown in the table.Base station is according to current deployment Environment determines to send SSS with 120khz.Therefore, when sending PSS, indicate SSS's using different subcarrier maps relations Subcarrier spacing.Predefine such as the mapping relations in table 3.For example, wherein mode 1 is sequence from low frequency point subcarrier to high frequency Point subcarrier maps；Mode 2 is sequence from high frequency points subcarrier to low frequency point subcarrier maps；Others difference mapping mode It is not excluded for, such as by sequence in the way of certain offset carries out cyclic shift.

Table 3

SSS subcarrier spacings	PSS subcarrier maps
		60khz	Mode 1
120khz	Mode 2

Terminal detects PSS with predefined 60khz, and terminal there is known the different mappings mode and SSS subcarriers of PSS sequences The mapping relations of compartment, therefore, terminal do phase with different sequences and different mapping modes with the signal received respectively Close, mapping mode is mode 2 used by obtaining current PSS.Hence, it can be determined that the subcarrier spacing of SSS is 120khz.

System predefines the mapping relations between SSS time-frequency domains position and PSS time-frequency domains position, in the present embodiment, frequency domain On, bandwidth identical with PSS holdings SSS (SSS is identical with PSS sequence lengths).Therefore, as shown in fig. 6, SSS and subcarrier into The more symbol Continuous Mappings of row, i.e. SSS sequential elements are first on first symbol for be close to PSS from low frequency point subcarrier to high frequency Point subcarrier Continuous Mappings, after mapping the bandwidth corresponding to full PSS, SSS sequential elements continue on second symbol from low frequency Point subcarrier completes mapping of the SSS sequences to subcarrier to high frequency points subcarrier Continuous Mappings, two symbols.

In time domain, SSS and PSS is multiplexed using TDM modes, and there is corresponding pass in the duration of SSS with subcarrier spacing System, such as 120khz subcarrier spacings correspond to 8.33us (without considering CP parts), and two symbols continue 16.67us altogether.Assuming that SSS The CP of place symbol takes 0.59us.

Terminal further with 120khz, receives SSS signals, and carry out with SSS on the time-frequency domain position where above-mentioned SSS Coherent detection.Further identify cell group ID, and further time-frequency essence is synchronous.Complete the detection process of downlink synchronous signal.

Note：Alternatively, it is also possible to using the combination of PSS sequences and PSS mapping modes come between the subcarrier of joint instructions SSS Every as shown in table 4, for the subcarrier spacing configuration of SSS in the present embodiment, base station will send PSS sequences 2 with mapping mode 2. Terminal determines the subcarrier spacing of SSS by identifying PSS sequences, and PSS sequence mappings mode.Mapping relations in table are Well known to base station and terminal.

Table 4

Embodiment six

The synchronizing signal structure corresponding to the present embodiment is illustrated in figure 7, PSS/SSS described herein uses TDM multiplexing sides Formula, and PSS subcarrier spacings are equal to the situation of SSS subcarrier spacings.

The SSS subcarrier spacings that base station determines can also be identical with the subcarrier spacing of predefined PSS, at this time, works as institute When the multiplex mode for stating the second synchronizing signal and first synchronizing signal be time division multiplexing tdm, first synchronizing signal and Second synchronizing signal takes identical bandwidth.

That is, as PSS and SSS time division multiplexing tdms, SSS can be very good to meet the band identical with PSS occupancy Width, and the length of symbol where both is also identical, and using under identical sequence length, Continuous Mappings PSS is corresponded to bandwidth by SSS Interior all subcarriers.The subcarrier spacing indicating mode of SSS can be identical with the method described in preceding embodiment, and uses After similar mode obtains the time-frequency domain resources position of SSS, specific detection method is also identical with foregoing mode, here not Repeat again.

Embodiment seven

When the first subcarrier spacing is more than the second subcarrier spacing, second synchronous signal sequence is carried out with subcarrier Interval mapping；Wherein, the second synchronous signal sequence element is mapped on portion subcarriers, does not map the second synchronizing signal The subcarrier zero insertion of sequential element；

The synchronizing signal structure corresponding to the present embodiment is illustrated in figure 8, PSS/SSS described herein uses TDM multiplexing sides Formula, PSS subcarrier spacings are more than SSS subcarrier spacings, and the situation that PSS is different from SSS occupied bandwidths.

When the first subcarrier spacing is less than or equal to the second subcarrier spacing, second synchronizing signal mapping and described the On one or more symbols in the range of one synchronizing signal same frequency.

The predefined PSS subcarrier spacings of system are less than the SSS subcarrier spacings that base station determines, such as PSS60khz, SSS120khz.In SSS subcarrier maps, it is not required that the bandwidth identical with PSS holdings, therefore, sequence is being kept with PSS When length is consistent (being 62 by taking LTE primary and secondary synchronization signals as an example), at this time, both of which accounts for 1 symbol (due to subcarrier spacing Difference, the duration of two symbols are different), the bandwidth shared by SSS will be greater than the bandwidth of PSS.

Specific detection method is also identical with foregoing mode, and which is not described herein again.

Embodiment eight

The synchronizing signal structure corresponding to the present embodiment is illustrated in figure 9, PSS/SSS described herein uses TDM multiplexing sides Formula, and PSS and SSS is individually formed the situation of SS burst.

Under the mode of PSS and SSS time division multiplexing tdms, however it is not limited to which PSS and SSS with port are multiplexed in identical SS The situation of block, can also be as shown in figure 9, PSS be individually formed PSS burst (is made of one or more PSS block, no The PSS of identical or different port/beam direction is sent in same PSS block), similar, SSS is individually formed SSS burst (it is made of one or more SSS block, identical or different port/beam direction is sent in different SSS block SSS)。

Under this mode, the subcarrier spacing of PSS and SSS determine do not there is area with other embodiment with indicating mode Not.The main distinction is the running time-frequency resource position time domain distance of PSS and SSS relatively far away from, but still keeps fixed position to close System, therefore, after the PSS that terminal successfully detects in a certain PSS block, still can find corresponding SSS block, and with Specific subcarrier spacing, mapping mode detect SSS.

Note：In above-described embodiment, the subcarrier spacing of SSS has been indicated to terminal in some way by PSS, and indicates Mode is that system is predefined, can not also indicate the subcarrier spacing of SSS, i.e. terminal is after it successfully have detected PSS, specific Press different subcarrier spacing blind examination SSS in position.

Embodiment nine

When the multiplex mode of second synchronizing signal and first synchronizing signal is frequency division multiplexing FDM, described the The two synchronizing signals time domain length identical with the first synchronizing signal occupancy.First subcarrier spacing is more than or equal to described Second subcarrier spacing.

When the multiplex mode of second synchronizing signal and first synchronizing signal is frequency division multiplexing FDM, described the Two synchronous signal sequences are mapped in shared by first synchronous signal sequence on the subcarrier of subcarrier side.As shown in Figure 10 For the synchronizing signal structure corresponding to the present embodiment, PSS/SSS described herein uses FDM multiplex modes, and PSS subcarrier spacings More than the situation of SSS subcarrier spacings, duration identical with SSS holdings PSS, SSS is mapped in side (the explanation SSS of PSS Different mappings mode can, including repeat map).

Base station is currently operating in 28GHz, and system predefines the frequency range frequency range where this frequency point Subcarrier spacing is 60khz used by (such as 10GHz-30GHz) PSS.

Base station sends PSS, and this implementation in fixed running time-frequency resource position according to predefined subcarrier spacing 60KHz Subcarrier spacing used by base station indicates SSS using PSS sequences in example, as shown in table 5.Base station is according to current deployment ring Border determines to send SSS with 120khz.Therefore, when sending PSS, using sequence 2.

Table 5

SSS subcarrier spacings	PSS sequences
		15khz、30khz	Sequence 1
60khz、120khz	Sequence 2
		240khz、480khz	Sequence 3

Terminal detects PSS with predefined 60khz, terminal there is known optional three sequences of PSS and every sequence with Mapping relations between SSS subcarrier spacings, therefore, terminal is done related with three sequences to the signal received respectively, is worked as Sequence is sequence 2 used by preceding PSS.Hence, it can be determined that the subcarrier spacing of SSS is 60khz, or 120khz.

SSS time-frequency domain resources：

In the present embodiment, system predefines the mapping relations between SSS time-frequency domains position and PSS time-frequency domains position, and when Bandwidth degree all same.

On frequency domain, SSS and PSS is multiplexed using FDM modes, and is mapped in the side of PSS, such as SSS sequences are all mapped in On the subcarrier of higher frequency point, SSS is identical with PSS sequence lengths, and the bandwidth that SSS is identical with PSS holdings.Therefore, as schemed Shown in 10, SSS carries out more symbol Continuous Mappings with subcarrier, i.e. SSS sequential elements some subcarrier more than PSS resources is opened Begin, from low frequency point subcarrier to high frequency points subcarrier Continuous Mappings on previous symbol, after mapping the identical bandwidth of full PSS, SSS sequential elements continue on the latter symbol from low frequency point subcarrier to high frequency points subcarrier Continuous Mappings, two 120khz Symbol completes mapping of the SSS sequences to subcarrier.

Significantly, since PSS uses different subcarrier spacings from SSS, then between both adjacent subcarriers simultaneously It cannot be guaranteed that orthogonality, therefore, will reserve a certain number of subcarriers as protection band guard band between PSS and SSS.

In time domain, duration and the subcarrier spacing of SSS have correspondence, the time domain scale corresponding to the PSS of 60khz (symbol) corresponds to two symbols of 120khz SSS.Both total durations are identical.

Terminal is indicated according to SSS subcarrier spacings, can only determine a SSS subcarrier spacing set, but not can determine that and worked as What preceding base station was sent is which of set specific subcarrier spacing, therefore, it is necessary to according to 60khz subcarrier spacings, and 120khz subcarrier spacings difference blind examination SSS.Subcarrier spacing is 120khz used by blind examination determines SSS, and has obtained SSS Sequence, while the timing to time-frequency domain has carried out intense adjustment.

It further determined that cell group ID corresponding with SSS sequences, with reference to ID in the cell group determined by PSS sequences, most Complete cell ID are determined eventually.Complete the detection process of downlink synchronous signal.

Embodiment ten

When the multiplex mode of second synchronizing signal and first synchronizing signal is frequency division multiplexing FDM, described the Two synchronous signal sequences are mapped in shared by first synchronous signal sequence on the subcarrier of the both sides of subcarrier.Such as Figure 11 institutes The synchronizing signal structure corresponding to the present embodiment is shown as, PSS/SSS described herein uses FDM multiplex modes, and between PSS subcarriers Every the situation more than SSS subcarrier spacings, duration identical with SSS holdings PSS, SSS is mapped in the both sides of PSS.

PSS is identical with previous embodiment configuration with subcarrier spacing used by SSS.Difference lies in system predefines SSS Sequential element is mapped in the both sides of PSS, and the both sides of subcarrier shared by corresponding PSS are both needed to reserved a certain number of subcarriers and make For protection band guard band.SSS can be identical with previous embodiment in mapping, by the SSS sequence mapping isometric with PSS On continuous two 120khz symbols, each symbol can also completely it be reflected on the corresponding two 120khz symbols of two PSS A SSS sequence is penetrated, then two 120khz symbols are that SSS sequences are repeated twice mapping.

The synchronizing signal structure corresponding to the present embodiment, PSS/SSS described herein use FDM multiplexing sides as shown in figure 12 Formula, and PSS subcarrier spacings are more than the situation of SSS subcarrier spacings, PSS is different from the SSS duration, and SSS is mapped in PSS's Both sides.

PSS is predefined as 60khz subcarrier spacings, and SSS is defined as 120khz subcarrier spacings by base station.And SSS sequences It is mapped in the both sides of PSS.The protection band of certain amount subcarrier is reserved in the both sides of PSS.Difference lies in SSS is not accounted for Two 120khz symbols corresponding to full mono- symbol of PSS60khz, but one of symbol has been only taken up (such as in figure Previous 120khz symbols), and SSS elements are mapped on corresponding subcarrier by certain predefined rule (can be The continuous mapping mapped or be spaced).Under this configuration, in time domain, SSS duration and PSS duration are not Equal, the resource of a remaining 120khz symbol can be used for sending other information.On frequency domain, SSS is mapped in the present embodiment On the subcarrier of PSS both sides, it can also be mapped on a certain subcarriers of PSS.

Embodiment 11

The synchronizing signal structure corresponding to the present embodiment, PSS/SSS described herein use FDM multiplexing sides as shown in figure 13 Formula, and PSS subcarrier spacings are less than the situation of SSS subcarrier spacings, PSS is different from the SSS duration, and SSS is mapped in PSS's Both sides (explanation be mapped in PSS sides can also).

In the present embodiment, PSS is predefined as 60khz subcarrier spacings, and SSS is defined as 30khz subcarrier spacings by base station. And SSS sequence mappings are in the both sides of PSS.

Due to the subcarrier spacing smaller of SSS, its symbol lengths is longer, and the duration of 30khz SSS symbols will Two times of 60khz PSS symbol durations, i.e., a 30khz symbol corresponds to two 60khz symbols, at this time, there will be PSS is corresponded in bandwidth, has the symbol of a 60khz unoccupied, can be used for sending other information.

SSS is mapped in the both sides of PSS, therefore, is both needed to reserve a certain number of subcarriers between the subcarrier shared by PSS As protection band guard band.SSS can also be mapped on the subcarrier of PSS sides.SSS can continuously or interval son Carrier wave maps.

Embodiment 12

The synchronizing signal structure corresponding to the present embodiment, PSS/SSS described herein use FDM multiplexing sides as shown in figure 14 Formula, and PSS subcarrier spacings are less than the situation of SSS subcarrier spacings, PSS is identical with the SSS duration, and PSS is repeated twice, SSS is mapped in the side of PSS.

In the present embodiment, PSS is predefined as 30khz, and SSS is defined as 15khz by base station, due to SSS subcarrier spacings Smaller, therefore symbol duration is longer (15khz symbol lengths are 2 times of 30khz symbol lengths), therefore, in order to keep PSS Equal with the SSS duration, base station employs the structure repeated twice, as shown in figure 14, two when sending PSS according to 30khz Identical sequence is sent on a 30khz symbols.SSS is to employ interval mapping in subcarrier maps, i.e., is reflected every a subcarrier Penetrate a SSS sequential element.So SSS will appear as the waveform as shown in Figure 15 (a) in time domain, i.e. repetitive structure twice.This Just approximately the same with two symbols repetition mapping time domain waveforms of PSS, difference lies in only have before first SSS time domain waveform CP, is denoted as CP1 here, and only data portion is repeated twice；And PSS this be entirely that two complete symbols repeat, i.e. CP+PSS Overall repetition.Under such configuration, terminal need to only filter out corresponding bandwidth, and corresponding sample is found in time domain Put, related operation is carried out using local time domain sequences and the synchronizing signal received, terminal can be more conducive to and carry out time domain correlation Detection.Further optimization, as shown in Figure 15 (b), can also remove cyclic prefix CP part by the latter symbol of PSS, then and two A PSS time domain waveforms will continuously repeat, in the sky of some duration identical with former CP2 of the end of the latter PSS symbols Spare time, terminal can also carry out corresponding coherent detection.Furthermore it is also possible to which two symbols of PSS are configured to Length discrepancy, but always cover with 1 15khz symbol lengths of foot, as shown in Figure 15 (c), the CP2 parts of first PSS symbol are repeated to place, signal section connects It is continuous to repeat to place, so that completely the same temporal signatures are embodied with SSS in time domain waveform.

Embodiment 13

The synchronizing signal structure corresponding to the present embodiment, PSS/SSS described herein use TDM multiplexing sides as shown in figure 16 Formula, PSS subcarrier spacings are more than SSS subcarrier spacings, and the situation that PSS is identical with SSS occupied bandwidths.

The predefined PSS subcarrier spacings of system are less than the SSS subcarrier spacings that base station determines, such as PSS60khz, SSS120khz.In PSS subcarrier maps, subcarrier spacing mapping is carried out, i.e., every one PSS sequence of a subcarrier maps Column element, and SSS can carry out the Continuous Mappings of subcarrier.Therefore, it is (major-minor with LTE when keeping sequence length consistent with PSS It is 62 exemplified by synchronizing signal), at this time, both of which accounts for 1 symbol, and (since subcarrier spacing is different, two symbols continue Time is different), the bandwidth shared by SSS will be greater than the bandwidth of PSS.

Note：In the present embodiment, PSS is predefined as interval mapping, in predefined PSS mapping rulers, it has been contemplated that SSS Subcarrier spacing may be than PSS subcarrier spacing bigger, at this time, in order to ensure PSS and the same sequence lengths of SSS, and take Same band, therefore, predefines PSS and carries out subcarrier spacing mapping.

Embodiment 14

Synchronizing signal structure corresponding to the present embodiment as shown in figure 17, having increased level synchronization signal newly, (the 3rd is synchronous Signal), it is denoted as NSS.PSS/NSS/SSS described herein uses TDM multiplex modes, and PSS subcarrier spacings are predefined for system The subcarrier spacing of subcarrier spacing, NSS and SSS are determined by base station, and in the present embodiment, PSS subcarrier spacings are less than NSS/SSS Subcarrier spacing, and three kinds of synchronizing signals respectively account for a sign resources, and three's occupied bandwidth is identical, and PSS is carried using introns Ripple maps, and NSS and SSS carries out subcarrier Continuous Mappings.

The function of newly-increased level synchronization signal NSS is to indicate subcarrier spacing.

Terminal detects PSS with predefined subcarrier spacing 15khz first, carries out preliminary timing, while is also other PSS sequences, NSS uses the sequence identical with PSS, but the subcarrier spacing of NSS is that base station flexibly determines, its son with SSS Carrier wave interval is consistent, the opposite time-frequency domain position for being 30khz, NSS and PSS be it is pre- set, therefore, after successfully have detected PSS, Terminal in definite time-frequency domain resources, can carry out the subcarrier of blind examination NSS with definite sequence (with the PSS sequences detected) Interval, terminal can be related to NSS to attempt with different subcarrier spacings, when the NSS signal phases for using 30KHz with receiving Guan Shi, peak value is maximum, it is thus determined that the subcarrier spacing of NSS is 30khz, while has also determined that the subcarrier spacing of SSS.Into One step, terminal finds running time-frequency resource where SSS, and utilize just according to time-frequency domain position relationship fixed between SSS and PSS The subcarrier spacing of the NSS detected, blind examination SSS sequences, that is, attempt with different SSS sequences and the SSS signal phases that receive Close, find the sequence corresponding to maximum correlation peaks, be SSS sequences.Complete down-going synchronous process.

Note：In the present embodiment, the subcarrier spacing to terminal instruction SSS is implied with the subcarrier spacing of NSS, can also be examined Consider other indicating modes, such as NSS still uses the subcarrier spacing identical with PSS, but different NSS sequences correspond to not Same SSS subcarrier spacing values, terminal determine SSS subcarrier spacing values by determining NSS sequences.For another example, NSS is utilized The different mappings mode of sequence indicates that the mode of SSS subcarrier spacings is also feasible.

After the method for wave beam forming, transmitting terminal can concentrate emitted energy in one direction, and in other sides Upward energy very little does not have, that is to say, that each wave beam has the directionality of itself, and each wave beam can only cover necessarily Terminal on direction, transmitting terminal, that is, base station need the launching beam on tens or even a directions up to a hundred to complete comprehensive cover Lid.In the prior art, the measurement and identification that preliminary beam direction is carried out during terminal initial accesses network, union are inclined to In in a time interval by base station side launching beam poll one time, identify preferable wave beam or port for terminal measurement.Tool Body, as shown in figure 18, net region is defined as downlink wave beam trace interval/downlink wave beam scanning subframe (DL beam Sweeping time interval/subframe), inside includes several continuous beam scanning time block (beam sweeping block)；, can be in multiple wave beams according to the number of base station radio-frequency chain in each beam scanning time block Or launch synchronizing signal on port, system information, optionally further includes wave beam/port measuring reference signals.One beam scanning Time block takes one or more OFDM symbols, and terminal is by the measurement to synchronizing signal, the acquisition of system information, and optionally The measurement of measuring reference signals identifies preferable downlink wave beam or port, and obtains cell essential information, and confidence is matched somebody with somebody in access Breath, so as to access network.Similar, in the uplink, also there is the sweep time block continuously configured.

Terminal at least needs to complete the Time and Frequency Synchronization of downlink by the detection to synchronizing signal in sweep time block, when , it is necessary to identify the starting point of sweep time block on the direction of domain, the border of place subframe, the side of radio frames where potentially further including Boundary.

The scheme provided using the above embodiment of the present invention, base station or transmission node pass through on predefined running time-frequency resource First synchronizing signal is sent with predefined subcarrier spacing, and the second synchronizing signal is flexibly determined according to current deployed environment Subcarrier spacing, optionally, used by base station can indicate the second synchronizing signal by the first synchronizing signal between subcarrier Every in order to which terminal is during whole synchronization signal detection, blind examination expense is preferably minimized.Another way, described first Synchronizing signal can not also indicate the subcarrier spacing of the second synchronizing signal, the second synchronizing signal of terminal blind examination, due to terminal It is the above-mentioned blind examination of specific location progress after the first synchronizing signal is successfully detected, the increase of blind examination complexity can't increase very It is more.By the above-mentioned means, on the one hand, son carries used by base station flexibly can select synchronizing signal transmitting according to actual environment Wave spacing, so as to ensure that the precision synchronously detected；On the other hand, end side as far as possible can drop to blind examination complexity most It is low, so as to save the expense of terminal.

Embodiment 15,

The embodiment of the present invention additionally provides a kind of dispensing device, and as shown in figure 19, the dispensing device includes：

First synchronizing signal transmitting element 1901, for sending the first synchronizing signal with the first subcarrier spacing；

Second synchronizing signal transmitting element 1902, for sending the second synchronizing signal with the second subcarrier spacing.

First subcarrier spacing is at least corresponding with frequency range；

The second synchronizing signal transmitting element, for determining the second subcarrier spacing according at least one of：Deployment Scene, coverage, frequency deviation.

The dispensing device further includes：

Control unit 1903, for controlling first synchronizing signal to be sent out with second synchronizing signal with the identical cycle Send；

Wherein, first synchronizing signal is master sync signal, takes fixed running time-frequency resource, and first synchronizing signal carries For at least one of：Symbol Timing, Frequency Synchronization, at least part of the information instruction of cell ID；Second synchronizing signal For auxiliary synchronous signals, second synchronizing signal provides at least one of：Subframe timing, wireless frame timing, cell ID At least part of the information instruction, accurate Time and Frequency Synchronization.

The first synchronizing signal transmitting element, for by between first synchronizing signal instruction, second subcarrier Every value；

The dispensing device further includes：

Indicating member 1904, for indicating the value of second subcarrier spacing by the 3rd synchronizing signal；

Control unit, the multiplex mode for controlling second synchronizing signal and first synchronizing signal are：Time-division TDM is multiplexed, alternatively, frequency division multiplexing FDM；

Described control unit, the multiplex mode for second synchronizing signal and first synchronizing signal is default Multiplex mode；

Alternatively,

Described control unit, for indicating second synchronizing signal and described first using the sequence of the first synchronizing signal The multiplex mode of synchronizing signal, and/or, the subcarrier maps mode of the first synchronous signal sequence indicates second synchronizing signal With the multiplex mode of first synchronizing signal.

Described control unit, for being the time-division when the multiplex mode of second synchronizing signal and first synchronizing signal When being multiplexed TDM, first synchronizing signal bandwidth identical with the second synchronizing signal occupancy.

Described control unit, for when the first subcarrier spacing is more than the second subcarrier spacing, described second synchronously to believe Number sequence is mapped with subcarrier into between-line spacing；Wherein, the second synchronous signal sequence element is mapped on portion subcarriers, is not had There is the subcarrier zero insertion of the second synchronous signal sequence element of mapping；

Described control unit, for being frequency division when the multiplex mode of second synchronizing signal and first synchronizing signal When being multiplexed FDM, second synchronizing signal time domain length identical with the first synchronizing signal occupancy.

Described control unit, for being frequency division when the multiplex mode of second synchronizing signal and first synchronizing signal When being multiplexed FDM, second synchronous signal sequence is mapped in the son of subcarrier side shared by first synchronous signal sequence On carrier wave, alternatively, second synchronous signal sequence is mapped in the both sides of subcarrier shared by first synchronous signal sequence Subcarrier on；

Possesses the son load of default quantity between second synchronizing signal and the subcarrier of first synchronizing signal mapping Ripple is as protection band.

The embodiment of the present invention additionally provides a kind of terminal, and as shown in figure 20, the terminal includes：

First detection unit 2001, for detecting the first synchronizing signal with the first subcarrier spacing；

Second detection unit 2002, after successfully detecting first synchronizing signal, is detected with the second subcarrier Second synchronizing signal；Wherein, subcarrier spacing is the second subcarrier spacing used by second synchronizing signal.

The terminal further includes：

Processing unit 2003, the running time-frequency resource position of first synchronizing signal is successfully be detected for basis, and in advance If second synchronizing signal and first synchronizing signal between opposite time-frequency location relation, determine the described second synchronous letter Number running time-frequency resource position, and detect second synchronizing signal.

Second detection unit, for utilizing the second synchronizing signal described in different subcarrier spacing blind examinations；

Alternatively,

Second synchronizing signal is detected using default subcarrier spacing；Wherein described default subcarrier spacing be from Obtained in first synchronizing signal or the 3rd synchronizing signal.

Processing unit, for by identifying that the sequence of first synchronizing signal obtains taking for second subcarrier spacing Value, and/or, obtain second subcarrier spacing by identifying the subcarrier maps mode of first synchronous signal sequence Value.

The processing unit, for obtaining described second at least one in the following manner using the 3rd synchronizing signal The value of subcarrier spacing：

The multiplex mode of second synchronizing signal and first synchronizing signal is：Time division multiplexing tdm, alternatively, frequency division It is multiplexed FDM；

The multiplex mode of second synchronizing signal and first synchronizing signal is default multiplex mode, alternatively, being The multiplex mode indicated by first synchronizing signal.

The processing unit, for using the first synchronizing signal sequence, and or, the first synchronous signal sequence subcarrier Mapping mode determines the multiplex mode.

The processing unit, for being the time-division when the multiplex mode of second synchronizing signal and first synchronizing signal When being multiplexed TDM, first synchronizing signal bandwidth identical with the second synchronizing signal occupancy；

When the multiplex mode of second synchronizing signal and first synchronizing signal is frequency division multiplexing FDM, described the The two synchronizing signals time domain length identical with the first synchronizing signal occupancy；

The processing unit, for being frequency division when the multiplex mode of second synchronizing signal and first synchronizing signal When being multiplexed FDM, second synchronous signal sequence is mapped in certain side of subcarrier shared by first synchronous signal sequence Subcarrier on, alternatively, second synchronous signal sequence is mapped in subcarrier shared by first synchronous signal sequence On the subcarrier of both sides；

Wherein, possesses default quantity between second synchronizing signal and the subcarrier of first synchronizing signal mapping Subcarrier is as protection band.

The embodiment of the present invention additionally provides a kind of Transmission system of synchronizing signal, as shown in figure 21, the system comprises：

Dispensing device 2101, for sending the first synchronizing signal with the first subcarrier spacing；Sent out with the second subcarrier spacing Send the second synchronizing signal；

Terminal 2102, for detecting the first synchronizing signal with the first subcarrier spacing；Success detects the described first synchronous letter After number, the second synchronizing signal of detection is detected with the second subcarrier；Wherein, subcarrier spacing used by second synchronizing signal For the second subcarrier spacing.

It should be noted that the dispensing device described in the present embodiment can be base station, or transmission node.

If the module integrated described in the embodiment of the present invention is realized in the form of software function module and is used as independent production Product are sold or in use, can also be stored in a computer read/write memory medium.It is real based on such understanding, the present invention The part that the technical solution of example substantially in other words contributes to the prior art is applied to embody in the form of software product Come, which is stored in a storage medium, including some instructions are used so that a computer equipment (can To be personal computer, the network equipment or network equipment etc.) perform the whole or portion of each embodiment the method for the present invention Point.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), deposit at random Access to memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes. Combined in this way, the embodiment of the present invention is not restricted to any specific hardware and software.

The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.

Claims

A kind of 1. transmission method of synchronizing signal, it is characterised in that the described method includes：

Base station or transmission node TRP determine the first subcarrier spacing and the second subcarrier spacing；

The base station or TRP send the first synchronizing signal with the first subcarrier spacing；

The base station or TRP send the second synchronizing signal with the second subcarrier spacing；

Wherein, first subcarrier spacing is predefined by system；Second subcarrier spacing is determined by base station or TRP.
2. according to the method described in claim 1, it is characterized in that, first subcarrier spacing at least with system working frequency points Affiliated band limits is corresponding, and the correspondence between first subcarrier spacing and band limits is that base station and terminal institute are public Know；The method further includes：The base station or TRP determine the second subcarrier spacing according at least one of：Deployment scenario, Coverage, frequency deviation, phase noise, delay spread, the demand of synchronization accuracy.
3. according to the method described in claim 1, it is characterized in that, the method further includes：

First synchronizing signal is sent with second synchronizing signal with the identical cycle；

Wherein, first synchronizing signal is master sync signal, takes fixed running time-frequency resource, first synchronizing signal provide with At least one lower information：Symbol Timing, Frequency Synchronization, at least part of the information instruction of cell ID；

Second synchronizing signal is auxiliary synchronous signals；Second synchronizing signal provides at least one following information：Subframe is determined When, wireless frame timing, at least part of the information instruction of cell ID, Time and Frequency Synchronization.
4. according to the method described in claim 1, it is characterized in that, the method further includes：

The value of second subcarrier spacing is indicated by first synchronizing signal；

Wherein, it is described to indicate that the value of second subcarrier spacing includes by first synchronizing signal：It is same using first The sequence for walking signal indicates the value of second subcarrier spacing, and/or, reflected using the subcarrier of the first synchronous signal sequence The mode of penetrating indicates the value of second subcarrier spacing.
5. according to the method described in claim 1, it is characterized in that, the method further includes：

The value of second subcarrier spacing is indicated by the 3rd synchronizing signal；

Wherein, it is described to indicate that the value of second subcarrier spacing includes at least one of by the 3rd synchronizing signal：

3rd synchronizing signal is used definite sequence and is sent with second subcarrier spacing, and institute is determined for terminal blind examination The value of the second subcarrier spacing is stated, wherein the definite sequence can be the predefined sequence of system or with described first The identical sequence of synchronizing signal；

The value of second subcarrier spacing is indicated using the sequence of the 3rd synchronizing signal；

The value of second subcarrier spacing is indicated using the subcarrier maps mode of the 3rd synchronous signal sequence.
6. according to the method described in claim 5, it is characterized in that, the 3rd synchronizing signal has with first synchronizing signal Standby default time-frequency location relation.
7. according to the method described in claim 1, it is characterized in that, the method further includes：

The multiplex mode of second synchronizing signal and first synchronizing signal is：Time division multiplexing tdm, alternatively, frequency division multiplexing FDM。
8. the method according to the description of claim 7 is characterized in that the method further includes：

The multiplex mode of second synchronizing signal and first synchronizing signal is default multiplex mode；

Alternatively,

The multiplex mode of second synchronizing signal and first synchronizing signal is indicated by first synchronizing signal.
9. according to the method described in claim 8, it is characterized in that, described indicate described second by first synchronizing signal The multiplex mode of synchronizing signal and first synchronizing signal, including：

The multiplex mode of second synchronizing signal and first synchronizing signal is indicated using the sequence of the first synchronizing signal, And/or first the subcarrier maps mode of synchronous signal sequence indicate second synchronizing signal and first synchronizing signal Multiplex mode.
10. the method according to the description of claim 7 is characterized in that the method further includes：

When the multiplex mode of second synchronizing signal and first synchronizing signal is time division multiplexing tdm, described first is same Walk the signal bandwidth identical with the second synchronizing signal occupancy.
11. according to the method described in claim 10, it is characterized in that, the method further includes：

When the first subcarrier spacing is more than the second subcarrier spacing, second synchronous signal sequence and subcarrier are into between-line spacing Mapping；Wherein, the second synchronous signal sequence element is mapped on portion subcarriers, does not map the second synchronous signal sequence The subcarrier zero insertion of element；

When the first subcarrier spacing is less than or equal to the second subcarrier spacing, second synchronizing signal is mapped in and described first On one or more symbols in the range of synchronizing signal same frequency.
12. the method according to the description of claim 7 is characterized in that the method further includes：

When the multiplex mode of second synchronizing signal and first synchronizing signal is frequency division multiplexing FDM, described second is same Walk the signal time domain length identical with the first synchronizing signal occupancy.
13. according to the method for claim 12, it is characterised in that the method further includes：

First subcarrier spacing is more than or equal to second subcarrier spacing.
14. the method according to the description of claim 7 is characterized in that the method further includes：

When the multiplex mode of second synchronizing signal and first synchronizing signal is frequency division multiplexing FDM, described second is same Step signal sequence is mapped in shared by first synchronous signal sequence on the subcarrier of subcarrier side, alternatively, described second Synchronous signal sequence is mapped in shared by first synchronous signal sequence on the subcarrier of the both sides of subcarrier.
15. according to the method for claim 14, it is characterised in that the method further includes：

The subcarrier for possessing default quantity between second synchronizing signal and the subcarrier of first synchronizing signal mapping is made For protection band.
A kind of 16. transmission method of synchronizing signal, applied to terminal, it is characterised in that the described method includes：

Terminal detects the first synchronizing signal with the first subcarrier spacing；

After the terminal detects first synchronizing signal, the second synchronizing signal sent with the second subcarrier spacing is detected；

Wherein, first subcarrier spacing is predefined by system；Second subcarrier spacing is determined by base station or TRP.
17. according to the method for claim 16, it is characterised in that the method further includes：

The terminal is according to the running time-frequency resource position for detecting first synchronizing signal, and default described second synchronous letter Opposite time-frequency location relation number between first synchronizing signal, determines the running time-frequency resource position of second synchronizing signal, And detect second synchronizing signal.
18. according to the method for claim 17, it is characterised in that detection second synchronizing signal includes：

The terminal utilizes the second synchronizing signal described in different subcarrier spacing blind examinations；

Alternatively,

The terminal detects second synchronizing signal using the second subcarrier spacing；Wherein second subcarrier spacing takes Value is obtained from first synchronizing signal or the 3rd synchronizing signal.
19. according to the method for claim 18, it is characterised in that the method further includes：

The terminal by identifying that the sequence of first synchronizing signal obtains the value of second subcarrier spacing, and/or, The terminal obtains second subcarrier spacing by identifying the subcarrier maps mode of first synchronous signal sequence Value.
20. according to the method for claim 18, it is characterised in that the method further includes：

The terminal obtains second subcarrier spacing at least one in the following manner using the 3rd synchronizing signal Value：

Terminal blind examination determines subcarrier spacing used by the 3rd synchronizing signal, obtains taking for second subcarrier spacing Value, wherein, the 3rd synchronizing signal is sent using definite sequence, and with second subcarrier spacing, described definite Sequence can be the predefined sequence of system or the sequence identical with first synchronizing signal；

Second subcarrier spacing is obtained by identifying the sequence of the 3rd synchronizing signal；

Taking for second subcarrier spacing is obtained by identifying the subcarrier maps mode of the 3rd synchronous signal sequence Value.
21. according to the method for claim 18, it is characterised in that the method further includes：

There are default time-frequency location relation with first synchronizing signal for 3rd synchronizing signal.
22. according to the method for claim 16, it is characterised in that the method further includes：

First synchronizing signal is sent with second synchronizing signal with the identical cycle, wherein, first synchronizing signal For master sync signal, fixed running time-frequency resource is taken, its function includes following one or more：Symbol Timing, Frequency Synchronization, cell At least part of the information instruction of mark；Second synchronizing signal is auxiliary synchronous signals, and function includes following one or more：Son Frame timing, wireless frame timing, at least part of the information instruction of cell ID, Time and Frequency Synchronization.
23. according to the method for claim 16, it is characterised in that the method further includes：

The multiplex mode of second synchronizing signal and first synchronizing signal is：Time division multiplexing tdm, alternatively, frequency division multiplexing FDM。
24. according to the method for claim 23, it is characterised in that the method further includes：

The multiplex mode of second synchronizing signal and first synchronizing signal is default multiplex mode, alternatively, to pass through The multiplex mode of the first synchronizing signal instruction.
25. according to the method for claim 24, it is characterised in that the method further includes：

Using the sequence of the first synchronizing signal, and/or, the subcarrier maps mode of the first synchronous signal sequence is described multiple to indicate Use mode.
26. according to the method for claim 23, it is characterised in that the method further includes：

When the multiplex mode of second synchronizing signal and first synchronizing signal is time division multiplexing tdm, described first is same Walk the signal bandwidth identical with the second synchronizing signal occupancy；

When the multiplex mode of second synchronizing signal and first synchronizing signal is frequency division multiplexing FDM, described second is same Walk the signal time domain length identical with the first synchronizing signal occupancy.
27. according to the method for claim 23, it is characterised in that the method further includes：

When the multiplex mode of second synchronizing signal and first synchronizing signal is frequency division multiplexing FDM, described second is same Step signal sequence is mapped in shared by first synchronous signal sequence on the subcarrier of certain side of subcarrier, alternatively, described Second synchronous signal sequence is mapped in shared by first synchronous signal sequence on the subcarrier of the both sides of subcarrier.
28. according to the method for claim 27, it is characterised in that the method further includes：

The subcarrier for possessing default quantity between second synchronizing signal and the subcarrier of first synchronizing signal mapping is made For protection band.
29. a kind of dispensing device, it is characterised in that the dispensing device includes：

Control unit, for determining the first subcarrier spacing and the second subcarrier spacing；Wherein, first subcarrier spacing Predefined by system；Second subcarrier spacing is determined by base station or TRP；

First synchronizing signal transmitting element, for sending the first synchronizing signal with the first subcarrier spacing；

Second synchronizing signal transmitting element, for sending the second synchronizing signal with the second subcarrier spacing.
30. dispensing device according to claim 29, it is characterised in that first subcarrier spacing at least with system work The band limits made belonging to frequency point is corresponding, and the correspondence between first subcarrier spacing and band limits is base station and end Well known to end；Control unit, for determining the second subcarrier spacing according at least one of：Deployment scenario, coverage, Frequency deviation, phase noise, delay spread, the demand of synchronization accuracy.
31. dispensing device according to claim 29, it is characterised in that described

Control unit, for controlling first synchronizing signal to be sent with second synchronizing signal with the identical cycle；

Wherein, first synchronizing signal is master sync signal, takes fixed running time-frequency resource, first synchronizing signal provide with At least one lower information：Symbol Timing, Frequency Synchronization, at least part of the information instruction of cell ID；

Second synchronizing signal is auxiliary synchronous signals；Second synchronizing signal provides at least one following information：Subframe is determined When, wireless frame timing, at least part of the information instruction of cell ID, Time and Frequency Synchronization.
32. dispensing device according to claim 29, it is characterised in that the first synchronizing signal transmitting element, is used for The value of second subcarrier spacing is indicated by first synchronizing signal；

Wherein, it is described to indicate that the value of second subcarrier spacing includes by first synchronizing signal：It is same using first The sequence for walking signal indicates the value of second subcarrier spacing, and/or, reflected using the subcarrier of the first synchronous signal sequence The mode of penetrating indicates the value of second subcarrier spacing.
33. dispensing device according to claim 29, it is characterised in that the dispensing device further includes：

Indicating member, for indicating the value of second subcarrier spacing by the 3rd synchronizing signal；

Wherein, it is described to indicate that the value of second subcarrier spacing includes at least one of by the 3rd synchronizing signal：

3rd synchronizing signal is used definite sequence and is sent with second subcarrier spacing, and institute is determined for terminal blind examination The value of the second subcarrier spacing is stated, wherein the definite sequence can be the predefined sequence of system or with described first The identical sequence of synchronizing signal；

Second subcarrier spacing is indicated using the sequence of the 3rd synchronizing signal；

The value of second subcarrier spacing is indicated using the subcarrier maps mode of the 3rd synchronous signal sequence.
34. dispensing device according to claim 33, it is characterised in that the 3rd synchronizing signal is synchronous with described first Signal possesses default time-frequency location relation.
35. dispensing device according to claim 29, it is characterised in that described control unit, for controlling described second The multiplex mode of synchronizing signal and first synchronizing signal is：Time division multiplexing tdm, alternatively, frequency division multiplexing FDM.
36. dispensing device according to claim 35, it is characterised in that described control unit, it is synchronous for described second Signal and the multiplex mode of first synchronizing signal are default multiplex mode；

Alternatively,

The multiplex mode of second synchronizing signal and first synchronizing signal is indicated by first synchronizing signal.
37. dispensing device according to claim 35, it is characterised in that described control unit, for synchronous using first The sequence of signal indicates the multiplex mode of second synchronizing signal and first synchronizing signal, and/or, the first synchronizing signal The subcarrier maps mode of sequence indicates the multiplex mode of second synchronizing signal and first synchronizing signal.
38. dispensing device according to claim 35, it is characterised in that described control unit, for when described second same When step signal and the multiplex mode of first synchronizing signal are time division multiplexing tdm, first synchronizing signal and described second Synchronizing signal takes identical bandwidth.
39. the dispensing device according to claim 38, it is characterised in that described control unit, for when the first subcarrier When interval is more than the second subcarrier spacing, second synchronous signal sequence is mapped with subcarrier into between-line spacing；Wherein, described Two synchronous signal sequence elements are mapped on portion subcarriers, and the subcarrier for not mapping the second synchronous signal sequence element is inserted Zero；When the first subcarrier spacing is less than or equal to the second subcarrier spacing, second synchronizing signal maps and described first is same Walk on one or more symbols in the range of signal same frequency.
40. dispensing device according to claim 35, it is characterised in that described control unit, is used for；

When the multiplex mode of second synchronizing signal and first synchronizing signal is frequency division multiplexing FDM, described second is same Walk the signal time domain length identical with the first synchronizing signal occupancy.
41. dispensing device according to claim 35, it is characterised in that described control unit, for when described second same When step signal and the multiplex mode of first synchronizing signal are frequency division multiplexing FDM, second synchronous signal sequence is mapped in Shared by first synchronous signal sequence on the subcarrier of subcarrier side, alternatively, second synchronous signal sequence maps Shared by first synchronous signal sequence on the subcarrier of the both sides of subcarrier；Second synchronizing signal and described first Possesses the subcarrier of default quantity as protection band between the subcarrier of synchronizing signal mapping.
42. a kind of terminal, it is characterised in that the terminal includes：

First detection unit, for detecting the first synchronizing signal with the first subcarrier spacing；

Second detection unit, after detecting first synchronizing signal, detects second sent with the second subcarrier spacing Synchronizing signal；

Wherein, first subcarrier spacing is predefined by system；Second subcarrier spacing is determined by base station or TRP.
43. terminal according to claim 42, it is characterised in that the terminal further includes：

Processing unit, for according to the running time-frequency resource position for detecting first synchronizing signal, and default described second Opposite time-frequency location relation between synchronizing signal and first synchronizing signal, determines the running time-frequency resource of second synchronizing signal Position, and detect second synchronizing signal.
44. terminal according to claim 43, it is characterised in that second detection unit, for utilizing different subcarriers It is spaced the second synchronizing signal described in blind examination；

Alternatively,

Second synchronizing signal is detected using the second subcarrier spacing；The value of wherein described second subcarrier spacing is from described Obtained in first synchronizing signal or the 3rd synchronizing signal.
45. terminal according to claim 44, it is characterised in that processing unit, for by identifying that described first is synchronous The sequence of signal obtains the value of second subcarrier spacing, and/or, by the son for identifying first synchronous signal sequence Carrier wave mapping mode obtains the value of second subcarrier spacing.
46. terminal according to claim 44, it is characterised in that the processing unit, for synchronous using the described 3rd Signal obtains the value of second subcarrier spacing at least one in the following manner：

Blind examination determines subcarrier spacing used by the 3rd synchronizing signal, so as to obtain taking for second subcarrier spacing Value, wherein, the 3rd synchronizing signal is sent using definite sequence, and with second subcarrier spacing, described definite Sequence can be the predefined sequence of system or the sequence identical with first synchronizing signal；

Second subcarrier spacing is obtained by identifying the sequence of the 3rd synchronizing signal；

Taking for second subcarrier spacing is obtained by identifying the subcarrier maps mode of the 3rd synchronous signal sequence Value.
47. terminal according to claim 42, it is characterised in that

First synchronizing signal is sent with second synchronizing signal with the identical cycle, wherein, first synchronizing signal For master sync signal, fixed running time-frequency resource is taken, its function includes following one or more：Symbol Timing, Frequency Synchronization, cell At least part of the information instruction of mark；Second synchronizing signal is auxiliary synchronous signals, and function includes following one or more：Son Frame timing, wireless frame timing, at least part of the information instruction of cell ID, Time and Frequency Synchronization.
48. terminal according to claim 42, it is characterised in that

The multiplex mode of second synchronizing signal and first synchronizing signal is：Time division multiplexing tdm, alternatively, frequency division multiplexing FDM。
49. terminal according to claim 48, it is characterised in that

The multiplex mode of second synchronizing signal and first synchronizing signal is default multiplex mode, alternatively, to pass through The multiplex mode of the first synchronizing signal instruction.
50. terminal according to claim 49, it is characterised in that the processing unit, is used for

Using the sequence of the first synchronizing signal, and or, the first synchronous signal sequence subcarrier maps mode it is described multiple to determine Use mode.
51. terminal according to claim 48, it is characterised in that the processing unit, is used for

When the multiplex mode of second synchronizing signal and first synchronizing signal is time division multiplexing tdm, described first is same Walk the signal bandwidth identical with the second synchronizing signal occupancy；

When the multiplex mode of second synchronizing signal and first synchronizing signal is frequency division multiplexing FDM, described second is same Walk the signal time domain length identical with the first synchronizing signal occupancy.
52. terminal according to claim 48, it is characterised in that the processing unit, is used for

When the multiplex mode of second synchronizing signal and first synchronizing signal is frequency division multiplexing FDM, described second is same Step signal sequence is mapped in shared by first synchronous signal sequence on the subcarrier of certain side of subcarrier, alternatively, described Second synchronous signal sequence is mapped in shared by first synchronous signal sequence on the subcarrier of the both sides of subcarrier；

Wherein, possesses the son load of default quantity between second synchronizing signal and the subcarrier of first synchronizing signal mapping Ripple is as protection band.
A kind of 53. Transmission system of synchronizing signal, it is characterised in that the system comprises：

Dispensing device, for determining the first subcarrier spacing and the second subcarrier spacing；Wherein, first subcarrier spacing Predefined by system；Second subcarrier spacing is determined by base station or TRP；First synchronous letter is sent with the first subcarrier spacing Number；Second synchronizing signal is sent with the second subcarrier spacing；

Terminal, for detecting the first synchronizing signal with the first subcarrier spacing；After detecting first synchronizing signal, with second Subcarrier spacing detects the second synchronizing signal.