CN106912115A - The sending method and device of stick signal and initial signal - Google Patents

Abstract

The invention discloses stick signal and the sending method and device of initial signal, the method includes：The moment is accessed in listem-before-talk, if not in the symbol edge of initial signal, then transmission stick signal is untill the symbol edge of initial signal；The symbol for taking predetermined quantity at symbol edge sends initial signal；After initial signal transmission, downlink data or control information are sent.Stick signal in the prior art and the uncertain problem of initial signal sending method are solved by the present invention, there is provided the technical scheme of a kind of transmission stet and initial signal.

Description

The sending method and device of stick signal and initial signal

Technical field

The present invention relates to communication field, sending method in particular to stick signal and initial signal and Device.

Background technology

LAA (Licensed-Assisted Access) technology is introduced in 3GPP Rel-13, i.e., in unlicensed spectrum Upper loading mobile communication business, such as frequency range of 5GHz.In unlicensed spectrum, presently mainly WiFi, The systems such as bluetooth, radar, medical treatment are being used.Due to the diversity and complexity of system in unlicensed spectrum, Need to solve coexistence problems, a basic principle is that different systems can be with the fair unauthorized frequency range of occupancy. Therefore need a kind of technical scheme can avoid between the LAA systems in unlicensed spectrum and LAA with The problem of the transmission collision between WiFi system.Coexistence problems tendency is solved in current 3GPP standards meetings Using LBT (Listen-before-talk) mechanism, i.e., first monitor the method transmitted again.

Each department specify the maximum holding time of unlicensed spectrum, so LAA base stations can after LBT successes The time for occupying channel is less than or equal to the maximum holding time, therefore the time that LBT is accessed is possible to not be place In subframe edge or OFDM symbol edge.LAA base stations are now needed to send stick signal or/and initial letter Number, may be at subframe edge or OFDM edges in order to downlink transfer burst.But stick signal and The sending method of initial signal is uncertain.

The content of the invention

The invention provides stick signal and the sending method and device of initial signal, to solve in the prior art Stick signal and the uncertain problem of initial signal sending method.

According to an aspect of the invention, there is provided the sending method of a kind of stick signal and initial signal, bag Include：The moment is accessed in listem-before-talk, if not in the symbol edge of initial signal, is then sent and is retained letter Number untill the symbol edge of the initial signal；The symbol hair of predetermined quantity is taken at the symbol edge Send the initial signal；After initial signal transmission, downlink data or control information are sent.

Further, the initial signal takes two symbols.

Further, described two transmission collection for meeting are combined into symbol x-2 and symbol x-1, wherein, it is described Symbol x refer to allow PDSCH, PDCCH or ePDCCH to start from part subframe meet set.

Further, PDSCH, PDCCH or ePDCCH is being allowed to start from meeting for part subframe In the case that collection is combined into symbol 0 or symbol 7, two symbols shared by the initial signal are expressed as { (12 Symbol, 13 symbols), (5 symbols, 6 symbols) }.

Further, the initial signal in described two symbols includes：The cell reference of Single port or two-port Signal CRS and master sync signal；Or, the initial signal in described two symbols includes：Single port or The cell reference signals CRS and auxiliary synchronous signals of two-port.

Further, it is same based on 6 Physical Resource Block PRB in the middle of first symbol of the stet Step signal；Or, 6 PRB in the middle of first symbol of the stet are auxiliary synchronous signals.

Further, other PRB of first symbol of the stet in addition to 6 PRB in centre are： Patterns of the 0 port CRS in symbol 0；Second symbol of the stet is in addition to 6 PRB in centre Other PRB be：Patterns of the 0 port CRS in symbol 4.

Further, other PRB of first symbol of the stet in addition to 6 PRB in centre are： The pattern of 0 port and 1 port CRS in symbol 0；Second symbol of the stet is except middle 6 Other PRB outside individual PRB are：The pattern of 0 port and 1 port CRS in symbol 4.

Further, sequence r (m) of the CRS is：

The initial value of wherein C (*) function is：

Or c_init=2¹⁰8 (unrelated with cell ID)；

The CRS patterns of the initial signal are：a_k,l=r (m'),

Wherein, in first symbol shared frequency resource k=6m, shared frequency resource in second symbol K=6m+3；

Further, sequence r (m) of the CRS is：

The initial value of wherein C (*) function is：

Or c_init=2¹⁰8 (unrelated with cell ID)；

The CRS patterns of the initial signal are：a_k,l=r (m')

Wherein, in first symbol shared frequency resource k=6m and k=6m+3, institute in second symbol The k=6m and k=6m+3 of frequency resource are accounted for,

According to an aspect of the invention, there is provided the dispensing device of a kind of stick signal and initial signal, bag Include：First sending module, the moment is accessed in listem-before-talk, if not in the symbol edge of initial signal, Then transmission stick signal is untill the symbol edge of the initial signal；Second sending module, in the symbol The symbol that number edge takes predetermined quantity sends the initial signal；3rd sending module, in the initial letter Number send after, send downlink data or control information.

Further, the initial signal takes two symbols.

By the present invention, the moment is accessed using in listem-before-talk, if not in the Signed Edge of initial signal Edge, then transmission stick signal is untill the symbol edge of the initial signal；Taken at the symbol edge The symbol of predetermined quantity sends the initial signal；After initial signal transmission, downlink data is sent Or control information.Stick signal in the prior art and initial signal sending method are solved not by the present invention Determine problem, there is provided the technical scheme of a kind of transmission stet and initial signal.

Brief description of the drawings

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes of the application Point, schematic description and description of the invention be used for explain the present invention, do not constitute to it is of the invention not Work as restriction.In the accompanying drawings：

Fig. 1 is the flow chart of the sending method of stick signal according to embodiments of the present invention and initial signal；

Fig. 2 is the structured flowchart of the dispensing device of stick signal according to embodiments of the present invention and initial signal；

Fig. 3 is two schematic diagrames of symbol one shared by initial signal according to embodiments of the present invention；

Fig. 4 is two schematic diagrames of symbol two shared by initial signal according to embodiments of the present invention；

Fig. 5 is the schematic diagram of the symbol of initial signal according to embodiments of the present invention and stick signal；

Fig. 6 is method for mapping resource schematic diagram one according to embodiments of the present invention；

Fig. 7 is method for mapping resource schematic diagram two according to embodiments of the present invention.

Specific embodiment

It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application Can be mutually combined.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

In embodiments of the present invention, there is provided the sending method of a kind of stick signal and initial signal, Fig. 1 is Stick signal according to embodiments of the present invention and the flow chart of the sending method of initial signal, as shown in figure 1, The flow comprises the following steps：

Step S102, the moment is accessed in listem-before-talk, if not in the symbol edge of initial signal, Then transmission stick signal is untill the symbol edge of initial signal；

Step S104, the symbol for taking predetermined quantity at symbol edge sends initial signal；

Step S106, after initial signal transmission, sends downlink data or control information.

Stick signal in the prior art and the uncertain problem of initial signal sending method are solved by above-mentioned steps, There is provided a kind of technical scheme for sending stet and initial signal.

Used as an optional embodiment, initial signal takes two symbols.For example, two transmissions for meeting Set can be symbol x-2 and symbol x-1, wherein, symbol x refer to allow PDSCH, PDCCH or What ePDCCH started from part subframe meets set.As a kind of special situation, allow PDSCH, PDCCH or ePDCCH start from the meeting in the case that collection is combined into symbol 0 or symbol 7 of part subframe, Two symbols shared by initial signal are expressed as { (12 symbols, 13 symbols), (5 symbols, 6 symbols) }.

Used as an optional implementation method, the initial signal in two symbols can include：Single port or two The cell reference signals CRS and master sync signal of port；Or, the initial signal in two symbols also may be used To include：The cell reference signals CRS and auxiliary synchronous signals of Single port or two-port.

As an optional implementation method, 6 Physical Resource Block in the middle of first symbol of stet PRB is master sync signal；Or, it is synchronous supplemented by 6 PRB in the middle of first symbol of stet Signal.

Used as an optional implementation method, first symbol of stet is in addition to 6 PRB in centre Other PRB are：Patterns of the 0 port CRS in symbol 0；Second symbol of stet is except middle 6 Other PRB outside individual PRB are：Patterns of the 0 port CRS in symbol 4.Or, the of stet Other PRB of one symbol in addition to 6 PRB in centre are：0 port and 1 port CRS are in symbol 0 Pattern；Other PRB of second symbol of stet in addition to 6 PRB in centre are：0 port and 1 Patterns of the port CRS in symbol 4.

Used as an optional implementation method, sequence r (m) of CRS is：

The initial value of wherein C (*) function is：

Or c_init=2¹⁰8 (unrelated with cell ID)；

The CRS patterns of initial signal are：a_k,l=r (m'),

Wherein, in first symbol shared frequency resource k=6m, shared frequency resource in second symbol K=6m+3；

Used as an optional implementation method, sequence r (m) of CRS is：

The initial value of wherein C (*) function is：

Or c_init=2¹⁰8 (unrelated with cell ID)；

The CRS patterns of initial signal are：a_k,l=r (m')

Wherein, in first symbol shared frequency resource k=6m and k=6m+3, institute in second symbol The k=6m and k=6m+3 of frequency resource are accounted for,

In the present embodiment, the dispensing device of a kind of stick signal and initial signal is additionally provided, Fig. 2 is root According to the structured flowchart of the dispensing device of the stick signal and initial signal of the embodiment of the present invention, as shown in Fig. 2 The device includes：

First sending module 22, accesses the moment, if not in the Signed Edge of initial signal in listem-before-talk Edge, then transmission stick signal is untill the symbol edge of initial signal；Second sending module 24, in symbol The symbol that edge takes predetermined quantity sends initial signal；3rd sending module 26, it is sent in initial signal Afterwards, downlink data or control information are sent.

Illustrated with reference to an optional embodiment.

The sending method of a kind of descending stick signal and initial signal is proposed in the present embodiment, is positively retained at non- When authorizing frequency spectrum, downlink transfer burst is set to be in subframe edge or OFDM symbol edge, and initial signal Synchronization can be supported, the function of cell, RRM measurements and CSI measurements is recognized.

In the first string, it is related to the delivery time of stick signal and initial signal and sends duration, under Illustrated in face of the first string.

Before descending burst transmission is started, the need for meeting the thick synchronizations of UE and RRM measurements, send out first Two initial signals of symbol and then hair downlink data or control information.And to ensure initial signal in Signed Edge Edge starts, if the LBT access moment is not on the symbol edge of initial signal, and in initial signal symbol Stick signal is sent out before edge, until initial signal symbol edge stops.

Initial signal accounts for two symbols, and the transmission collection of the two symbols is combined into and is expressed as symbol x-2 and symbol X-1, wherein symbol x refer to the assemble of symbol for allowing PDSCH or (e) PDCCH to start from part subframe. The assemble of symbol that special permission PDSCH or (e) PDCCH starts from part subframe is symbol 0 or symbol 7, then two shared by initial signal symbol be expressed as { (12,13 symbol), (5,6 symbol) }, such as scheme 3rd, shown in Fig. 4.

It is related to the composition of initial signal in two symbols in second scheme, second scheme is said below It is bright.

Initial signal is made up of Single port or two-port CRS and PSS/SSS in the two symbols.

The centre of symbol 6 of stick signal first PRB is PSS signals, its sequence and resource impact with Agreement is identical.The centre of symbol 6 of stick signal first PRB is SSS signals, its sequence and resource Mapping is identical with agreement.

Other PRB of first symbol of stick signal in addition to 6 PRB in centre are that 0 port CRS exists The pattern of symbol 0, its sequence and resource impact are different from agreement；Second symbol removes 6 PRB in centre Other outer PRB are that, in the pattern of symbol 4, its sequence and resource impact are with agreement not for 0 port CRS Together.Or, other PRB of first symbol of stick signal in addition to 6 PRB in centre are, 0 port With 1 port CRS symbol 0 pattern, its sequence and resource impact are different from agreement；Second symbol Other PRB in addition to 6 PRB in centre are, 0 port and 1 port CRS symbol 4 pattern, its Sequence and resource impact are different from agreement.Fig. 5 shows the symbol of initial signal and stick signal.

CRS sequences and initial value still adopt agreement regulation, in the present embodiment there is provided a kind of money of CRS Source mapping method：

A kind of resource impact of CRS is provided in example 1, Fig. 6 is resource according to embodiments of the present invention Mapping method schematic diagram one.

CRS sequencesIt is that sequence is unrelated with time slot with agreement difference, it is unrelated with residing symbol, It is unrelated to cell ID/related.

The initial value of wherein C (*) function is

(related to cell ID) or c_init=2¹⁰8 (with cell ID without Close)

The CRS patterns of initial signal are：a_k,l=r (m')

The k=6m of shared frequency resource in wherein first symbol, shared frequency resource in second symbol K=6m+3,

There is provided the resource impact of another kind CRS in example 2, Fig. 7 is money according to embodiments of the present invention Source mapping method schematic diagram two.

CRS sequences are identical with example 1

The CRS patterns of initial signal are a_k,l=r (m')

The k=6m and k=6m+3 of shared frequency resource, shared in second symbol in wherein first symbol The k=6m and k=6m+3 of frequency resource,

After the present embodiment ensure that descending LBT is accessed, send out initial signal and be at Signed Edge Edge or subframe edge；And sent out initial signal includes PSS and SSS signals, auxiliary is not accessed for a long time UE obtain synchronizing information, identification cell；Comprising CRS signals can aid in UE carry out RRM measurement and CSI is measured, but only adopts former CRS ports 0, or the port 1 of port 0 pattern, its formation sequence and institute Place's time slot, residing symbol is unrelated.Above-mentioned initial signal can DRS for a long time lack in the case of, The functions such as synchronous and RRM measurements, CSI measurements are completed, to improve downlink transfer performance.

The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for ability For the technical staff in domain, the present invention can have various modifications and variations.It is all in the spirit and principles in the present invention Within, any modification, equivalent substitution and improvements made etc., should be included in protection scope of the present invention it It is interior.

Claims (12)

1. the sending method of a kind of stick signal and initial signal, it is characterised in that including：

The moment is accessed in listem-before-talk, if not in the symbol edge of initial signal, is then sent and is retained letter Number untill the symbol edge of the initial signal；

The symbol for taking predetermined quantity at the symbol edge sends the initial signal；

After initial signal transmission, downlink data or control information are sent.

2. method according to claim 1, it is characterised in that the initial signal takes two symbols Number.

3. method according to claim 2, it is characterised in that described two transmission set for meeting It is symbol x-2 and symbol x-1, wherein, the symbol x refers to allow PDSCH, PDCCH or ePDCCH Start from part subframe meets set.

4. according to the method in claim 2 or 3, it is characterised in that allowing PDSCH, PDCCH It is described or ePDCCH starts from the meeting in the case that collection is combined into symbol 0 or symbol 7 of part subframe Two symbols shared by initial signal are expressed as { (12 symbols, 13 symbols), (5 symbols, 6 symbols) }.

5. method according to claim 2, it is characterised in that the initial letter in described two symbols Number include：The cell reference signals CRS and master sync signal of Single port or two-port；Or, described two Initial signal in individual symbol includes：The cell reference signals CRS and auxiliary synchronous letter of Single port or two-port Number.

6. method according to any one of claim 1 to 5, it is characterised in that the aperture Number first symbol in the middle of 6 Physical Resource Block PRB be master sync signal；Or, the aperture Number first symbol in the middle of 6 PRB be auxiliary synchronous signals.

7. method according to claim 6, it is characterised in that first symbol of the stet Other PRB number in addition to 6 PRB in centre are：Patterns of the 0 port CRS in symbol 0；The reservation Other PRB of second symbol of symbol in addition to 6 PRB in centre are：0 port CRS is in symbol 4 Pattern.

8. method according to claim 6, it is characterised in that first symbol of the stet Other PRB number in addition to 6 PRB in centre are：The pattern of 0 port and 1 port CRS in symbol 0； Other PRB of second symbol of the stet in addition to 6 PRB in centre are：0 port and 1 end Patterns of the mouth CRS in symbol 4.

9. method according to claim 5, it is characterised in that sequence r (m) of the CRS is：

$r\left(m\right)=\frac{1}{\sqrt{2}}(1-2\·c(2m\left)\right)+j\frac{1}{\sqrt{2}}(1-2\·c(2m+1\left)\right),m=0,1,...,2N_{RB}^{\max ,DL}-1,$

The initial value of wherein C (*) function is：

$c_{init}=2^{10}\·8\·(2\·N_{ID}^{cell}+1)+2\·N_{ID}^{cell}$ Or c_init=2¹⁰8 (unrelated with cell ID)；

The CRS patterns of the initial signal are：a_k,l=r (m'),

Wherein, in first symbol shared frequency resource k=6m, shared frequency resource in second symbol K=6m+3； $\begin{array}{c}m=0,1,...,2\·N_{RB}^{DL}-1\\ m^{\′}=m+N_{RB}^{\max ,DL}-N_{RB}^{DL}\end{array}.$

10. method according to claim 5, it is characterised in that sequence r (m) of the CRS is：

$r\left(m\right)=\frac{1}{\sqrt{2}}(1-2\·c(2m\left)\right)+j\frac{1}{\sqrt{2}}(1-2\·c(2m+1\left)\right),m=0,1,...,2N_{RB}^{\max ,DL}-1,$

The initial value of wherein C (*) function is：

Or c_init=2¹⁰8 (unrelated with cell ID)；

The CRS patterns of the initial signal are：a_k,l=r (m')

Wherein, in first symbol shared frequency resource k=6m and k=6m+3, institute in second symbol The k=6m and k=6m+3 of frequency resource are accounted for, $\begin{array}{c}m=0,1,...,2\·N_{RB}^{DL}-1\\ m^{\′}=m+N_{RB}^{\max ,DL}-N_{RB}^{DL}\end{array}.$

The dispensing device of a kind of 11. stick signals and initial signal, it is characterised in that including：

First sending module, the moment is accessed in listem-before-talk, if not in the symbol edge of initial signal, Then transmission stick signal is untill the symbol edge of the initial signal；

Second sending module, the symbol for taking predetermined quantity at the symbol edge sends the initial signal；

3rd sending module, after initial signal transmission, sends downlink data or control information.

12. devices according to claim 11, it is characterised in that the initial signal takes two Symbol.