CN104144468B - Method and apparatus for strengthening PBCH in NCT networks - Google Patents
Method and apparatus for strengthening PBCH in NCT networks Download PDFInfo
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Abstract
The invention provides a kind of method and apparatus for being used to strengthen PBCH in NCT networks.The NCT networks include one or more NCT user equipmenies (UE) that NCT base stations and the NCT base stations are serviced.This method is performed by NCT base stations, including：The PBCH is configured so that comprising the demodulated reference signal (DMRS) specific to the NCT base stations, the wherein DMRS is used for all NCT UE that the NCT base stations are serviced and the PBCH is demodulated；And all NCT UE serviced to the NCT base stations broadcast configured PBCH.
Description
Technical field
The present invention is generally related to wireless communication field, more specifically, is related to in new wave-carring type (NCT) net
Strengthen the method and apparatus of Physical Broadcast Channel (PBCH) in network.
Background technology
In order to tackle the continuous growth of wireless mobile communications data service and the constantly elevated network capacity of the thing followed
Demand, third generation partner program (3GPP) Long Term Evolution (LTE)/advanced LTE (LTE-A) network is proposed new higher
Requirement.NCT technologies are upcoming 3GPP Release12 (R12) and the version important spy to be supported afterwards
Sign, it can help to realize that required physical layer changes, and save base station energy, improve the flexibility of deployment and in isomery
Interference is reduced in network (HetNet).NCT technologies can not only optimize Microcell (small cell), can also be used in macrocell
In (macro cell).
In NCT schemes, frame structure has been redefined, has eliminated the specific ginseng of cell for being used to demodulate transmitted in PBCH
Signal (CRS) etc. is examined, to reduce expense.
The schematic diagram of exemplary NCT network designs is shown in Fig. 1.As shown in figure 1, in cordless communication network 100, bag
Containing a macro base station 110, it provides larger network coverage；One or more has the microcell base station of smaller power
122nd, 124, it provides relatively small network coverage respectively；It is and one or more with corresponding macro base station or Microcell
The user equipment (UE) 132,134 and 136 that base station is communicated.Wherein, it is merely exemplary, the covering of microcell base station 122
Scope is included in the coverage of macro base station 110, and the coverage of microcell base station 124 and the covering model of macro base station 110
Enclose partly overlap or completely it is non-intersect.Macro base station 110, microcell base station 122 and 124 and its corresponding UE may use NCT skills
Art deployment may also be disposed using original carrier type.Herein, by using the base station in the network of NCT technologies deployment
(including macro base station and microcell base station) is referred to as NCT base stations, will be referred to as NCT using the UE in the network of NCT technologies deployment
UE.In Fig. 1 in shown NCT deployment, for the NCT base stations of no macrocell covering, NCT UE (such as
UE134 and/or UE136) individually it will be communicated with NCT base stations (such as microcell base station 124).
In cell searching or cell reselection process, UE should read Master Information Block (MIB) by PBCH.According to current
Standard, UE obtains synchronization and thing from the master sync signal (PSS) from its serving BS or auxiliary synchronous signal (SSS) first
Cell identifier is managed, is then based on the cell specific reference signal CRS included in PBCH as demodulated reference signal (DMRS)
PBCH is demodulated and decoded to obtain MIB.
The content of the invention
As described above, in NCT schemes, the CRS for demodulating no longer be present.On the other hand, if will in NCT deployment
The specific reference signals of UE are demodulated as DMRS to PBCH, then are difficult all to demodulate PBCH for all UE.As a result,
NCT UE are difficult to obtain mib information, and this will obtain one of MIB as NCT UE during cell searching or cell reselection process
Obstacle.
For problem above, the invention provides a kind of scheme for strengthening PBCH in NCT networks.
A kind of according to an aspect of the invention, there is provided method for being used to strengthen PBCH in NCT networks.The NCT nets
Network includes one or more NCT UE that NCT base stations and the NCT base stations are serviced.This method is performed by NCT base stations, including：Match somebody with somebody
The PBCH is put to be used for all NCT UE that the NCT base stations are serviced comprising the DMRS specific to the NCT base stations, the wherein DMRS
The PBCH is demodulated；And all NCT UE serviced to the NCT base stations broadcast configured PBCH.
According to another aspect of the present invention, there is provided a kind of device for being used to strengthen PBCH in NCT networks.The NCT
Network includes one or more NCT UE that NCT base stations and the NCT base stations are serviced.The device realize in NCT base stations or by
Realize NCT base stations.The device includes：PBCH dispensing units, its be configured as configuring the PBCH with comprising specific to this
The DMRS of NCT base stations, the wherein DMRS are used for all NCT UE that the NCT base stations are serviced and the PBCH are demodulated；And
Transmitting element, its all NCT UE for being configured to be serviced to the NCT base stations broadcast configured PBCH.
According to another aspect of the present invention, there is provided a kind of method for being used to strengthen PBCH in NCT networks.The NCT
Network includes one or more NCT UE that NCT base stations and the NCT base stations are serviced.This method is performed by NCT base stations, including：
The PBCH is configured to indicate that enhanced Physical Downlink Control Channel (ePDCCH) public search space (CSS) configures；And to
All NCT UE that the NCT base stations are serviced broadcast configured PBCH.
According to another aspect of the present invention, there is provided a kind of device for being used to strengthen PBCH in NCT networks.The NCT
Network includes one or more NCT UE that NCT base stations and the NCT base stations are serviced.The device realize in NCT base stations or by
The realization of NCT base stations, including：PBCH dispensing units, it is configured as configuring the PBCH to indicate that ePDCCH CSS matches somebody with somebody
Put；And transmitting element, its all NCT UE for being configured as being serviced to the NCT base stations broadcast configured PBCH.
Brief description of the drawings
, will be more preferable geographical after the description below with reference to the embodiment of the invention given by drawings below
The solution present invention, and other objects of the present invention, details, feature and advantage will become apparent.In the accompanying drawings：
Fig. 1 shows the schematic diagram of exemplary NCT network designs；
Fig. 2 shows the schematic diagram of the subframe structure of the prior art comprising PBCH；
Fig. 3 shows the stream for being used to strengthen in NCT networks a kind of PBCH method according to the embodiment of the present invention
Cheng Tu；
Fig. 4 shows the schematic diagram of the subframe structure comprising the PBCH configured according to Fig. 3 embodiment；
Fig. 5 is shown comprising according to a kind of schematic diagram for the subframe structure for replacing the PBCH that embodiment is configured；
Fig. 6 shows another method for being used to strengthen in NCT networks PBCH according to the embodiment of the present invention
Flow chart；
Fig. 7 A and Fig. 7 B respectively illustrate the continuous dispensing and the distribution that interlocks according to the CSS positions of Fig. 7 embodiment
Schematic diagram；
Fig. 8 shows the side for being used to strengthen in NCT networks a kind of PBCH device according to the embodiment of the present invention
Block diagram；And
Fig. 9 shows another device for being used to strengthen in NCT networks PBCH according to the embodiment of the present invention
Block diagram.
Embodiment
The preferred embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Preferred embodiment, however, it is to be appreciated that may be realized in various forms the disclosure without the embodiment party that should be illustrated here
Formula is limited.On the contrary, these embodiments are provided so that the disclosure is more thorough and complete, and can be by the disclosure
Scope is completely communicated to those skilled in the art.
In NCT networks, due to the CRS for demodulating no longer be present, so PBCH can hardly be demodulated.In order to solve
This problem, consider to handle PBCH demodulation problem using new mechanism in NCT networks.
Fig. 2 shows the schematic diagram of the subframe structure of the prior art comprising PBCH.As shown in Figure 2, PBCH is located at
Preceding 4 symbols of second time slot of one subframe, and 72 subcarriers in the middle part of band occupancy.In the figure 2 example, one
The length of individual subframe is, for example, 10ms.The routine in FDD (FDD) frame structure defined in LTE system is shown in Fig. 2
The situation of cyclic prefix (CP), one of radio frames include 10 subframes, and each subframe includes 2 time slots, each time slot bag
Containing 7 symbols.It will be understood, however, that the invention is not limited in the frame structure shown in Fig. 2, but can apply to any
Frame structure or time division duplex (TDD) frame structure in the case of other frame structures, such as extended cyclic prefix etc..
, can be still using above-mentioned PBCH configurations of the prior art, i.e. PBCH is still located in NCT network designs
Preceding 4 symbols of second time slot of one subframe, and take 72 subcarriers of centre.But those skilled in the art can
To understand, the invention is not limited in this, any existing or exploitation in the future PBCH position arrangements fall within the present invention
In the range of.
Fig. 3 shows a kind of method 300 for being used to strengthen in NCT networks PBCH according to the embodiment of the present invention
Flow chart.Method 300 is for example performed by the NCT base stations in NCT networks.In the following description, with the Microcell base in Fig. 1
Stand exemplified by the NCT networks that are formed of 124 and its two UE (UE134 and UE136) serviced to illustrate, wherein will be small
Area base station 124 is referred to as NCT base stations 124, and two UE (UE134 and UE136) that it is serviced are referred to as NCT UE134 and NCT
UE136.Although it will be understood by those skilled in the art that herein by taking independent NCT networks (wherein UE only with micro-cell communication) as an example
It is described, but the invention is not restricted to this, but can also be applied in dependent NCT networks.
In step 310, NCT base stations 124 configure PBCH to include the DMRS specific to the NCT base stations 124.The DMRS is available for
All NCT UE (being in this example NCT UE134 and NCT UE136) that NCT base stations 124 are serviced solve to the PBCH
Adjust.
As noted previously, as the specific reference signals of current UE are associated with PDSCH or ePDCCH, it can not be straight
The demodulation for being reused in PBCH is connect, therefore the new DMRS that the demodulation for PBCH can be received by all UE can be designed.Therefore, exist
In a kind of embodiment, new PBCH can be produced specific to the pseudo-random sequence of the PBCH specifically with reference to letter by producing
Number sequence, so as to produce the new DMRS associated with the PBCH.It is appreciated that the new DMRS is different from Legacy DMRS.
For example, it is assumed that antenna port p ∈ { 111,112,113,114 } are the PBCH ports in NCT networks.So, for
Any antenna port p ∈ { 111,112,113,114 }, the specific reference signal sequence r (m) of new PBCH can be by following
Formula (1) definition：
Wherein, 0≤m≤M, M are the quantity of reference signal, c (i) be defined in Section 7.2 of 3GPP TS36.213 it is pseudo- with
Machine sequence, its initial value areWherein nsIt is the time slot in a subframe
Number,WithIt is predetermined PBCH relevant parameters respectively,It is downward rounding operation symbol.Pay attention toWith
Should be that UE is known a priori by.
Fig. 4 shows the schematic diagram of the subframe structure comprising the PBCH configured according to the embodiment.Such as institute in Fig. 4
Show, in the resource block for the 6-7 and 13-14 symbols that caused new DMRS is located at the subframe structure, such as right oblique line side in figure
Shown in block.
As can be seen that DMRS new according to caused by embodiment position may cause PSS/SSS and DMRS it
Between conflict, as shown in the retiform resource block of band in the 6-7 symbols in the subframe structure in Fig. 4.
In another kind replaces embodiment, it is used for PBCH demodulation as DMRS using configurable CRS.It is specific next
Say, CRS is produced according to original (Legacy) scheme, and the CRS is only opened in the resource block that the PBCH is located at.Fig. 5 shows
The schematic diagram of the subframe structure comprising the PBCH configured according to the embodiment is gone out.As shown in Figure 5, caused CRS
It is identical with according to caused by original (Legacy) scheme, but CRS (i.e. subframes in the resource block being only located at positioned at PBCH
The resource block that is located at of 8-9 symbols in CRS) be useful.
CRS expenses are reduced in this way.
With return reference to Fig. 3.After PBCH is configured with, in step 320, all NCT that NCT base stations 124 are serviced to it
The PBCH that UE broadcast is configured in the step 310.
For example, for above-mentioned new DMRS, the transmission port of the PBCH in independent NCT networks is { 111 }, { 111,112 }
One in { 111,112,113,114 }.
In another example for above-mentioned configurable CRS, the transmission port of the PBCH in independent NCT networks be { 1 }, { 0,1 } and
One in { 0,1,2,3 }.
In one embodiment, the transmission mode of the PBCH in NCT networks is space frequency block coding (SFBC).
In one embodiment, in the PBCH transmission in independent NCT networks, PBCH can be sent out on an antenna port
Penetrate.If multiple antenna ports, then for this new DMRS and configurable CRS, it is left 4 port resources and is used for PBCH
(SFBC/SFBC+ frequency error factors transmission diversity (FSTD)) blind decoding, as shown in Figures 4 and 5.
In addition, in cell searching or cell reselection process, NCT UE should obtain enough information from PBCH.For example,
In view of UE in being disposed in NCT dispatched by ePDCCH, so NCT UE should obtain other systems block of information (SIB) letter
EPDCCH public search space (CSS) configuration information is obtained before ceasing (such as SIB1, SIB2).Therefore according to the another of the present invention
On one side, the CSS configurations that enhancing allows it to indicate ePDCCH should be carried out to the PBCH in NCT networks.Simultaneously as
PBCH can not transmit too many bit to indicate that CSS is configured, thus should redesign original PBCH (Legacy PBCH) content with
Adapt to NCT schemes.
Fig. 6 shows another method 600 for being used to strengthen in NCT networks PBCH according to the embodiment of the present invention
Flow chart.Method 600 is for example performed by the NCT base stations in NCT networks.It is similar with method 300, with the Microcell in Fig. 1
Illustrated exemplified by the NCT networks that base station 124 and its two UE (UE134 and UE136) serviced are formed, wherein will be micro-
Cell base station 124 is referred to as NCT base stations 124, and two UE (UE134 and UE136) that it is serviced are referred to as NCT UE134 and NCT
UE136。
In step 610, NCT base stations are configured to PBCH to indicate that ePDCCH CSS is configured.
EPDCCH CSS configurations can include at least one in following information：
EPDCCH transport-types, it is distributed or localized transmission type
The Physical Resource Block (PRB) that CSS positions, i.e. CSS are located to index
CSS sizes
In 3GPP TS36.331, wireless heterogeneous networks (RRC) signaling of the specific ePDCCH configurations of UE is as follows：
Because in NCT networks, PBCH amount of bits is limited, it can not support the Bit String that size is 4..38
resourceBlockAssignment-rl l.Therefore, according to another aspect of the present invention, some reserved bits can be used
To indicate that CSS is configured.
In order to reduce expense, ePDCCH transport-types (i.e. distributed or localized transmission type) and CSS sizes can
It is pre-defined.Notice in Legacy PDCCH, CSS is made up of 16 control channel elements (CCE).4 PRB pairs include 16
Individual enhanced CCE (eCCE), therefore, for the CSS in ePDCCH it is sufficient that 4 PRB pairs.In consideration of it, example
Such as ePDCCH CSS sizes can be defined previously as 4 PRB pairs.
Therefore, how following discussion indicates CSS positions if concentrating merely on.
According to a kind of embodiment, referred to using cell identifier (such as Physical Cell Identifier PCI) and CSS indexes to combine
Show CSS positions.
In this embodiment, staggeredly indicating mode and continuous indicating mode are defined.It is described in detail below.
1st, interlock indicating mode：
Cell is set specifically to offset o first, skew o can be provided by following formula (2)：
WhereinIt is cell identifier, N is the integer depending on bandwidth, and it can be pre-defined.
IfFor the CSS indexes of PRB pair, then have：
WhereinWithIt is the number and CSS sizes of downlink PRB pair respectively,It is downward rounding operation
Symbol, *：* be jump operator, wherein * a:n:B* represents that using a as starting point n counts for step-length, and using the number no more than b as terminal
Computing, a, b, n are integers.
In an example, it is 10Mbps to set downlink bandwidth, this expressionAnd set N=6, then staggeredly referring to
Show in pattern, CSS indexesIt can be expressed as：
2nd, continuous indicating mode
Cell is set specifically to offset o first, it is identical with above formula (2) to offset o setting, then the CSS ropes of PRB pair
DrawIt can be expressed as：
Wherein *：* be jump operator, * a:B* represent using a as starting point, 1 be step-length count, and using the number no more than b as
The computing of terminal, a, b are integers.It is the number of downlink PRB pair,It is downward rounding operation symbol.
In an example, it is 10Mbps to set downlink bandwidth, this expressionN=6 is opened up, then is continuously being referred to
Show in pattern, CSS indexesIt can be expressed as：
In this way, the CSS configuration indication bits required for reducing in PBCH.On the other hand, can also keep away
Exempt from the inter-cell interference on CSS.
Fig. 7 A and Fig. 7 B respectively illustrate the continuous dispensing and the staggeredly signal of distribution according to the CSS positions of the embodiment
Figure.
The advantages of CSS instructions of the present invention, includes：Reduce PBCH and be used for the expense of CSS position instructions, and can drop
CSS interference between low cell.
The embodiment replaced according to another kind, by starting to indexWith it is continuousIndividual PRB pair indicates CSS
Position,It is CSS sizes.This indicating means is also referred to as " directly indicating ".
In one implementation, start to index to define by below equation (5)
The then CSS indexes of PRB pairIt can be expressed as：
Wherein *：* be jump operator, wherein * a:n:B* represents that using a as starting point n counts for step-length, and with no more than b
Number be terminal computing, a, b, n are integers.
If for example, quantity of downlink PRB pairAndTo then have 12 candidates'
Therefore 4 reserved bits are only needed to indicate that CSS is distributed.
In this implementation, for the PBCH bits required for different bandwidth as shown in Table 1 below：
Table 1 is for the PBCH bit numbers required for different bandwidth
In a kind of deformation preferably, CSS positions are indicated by " direct instruction+CSS is offset ".
First, start to index to define by above formula (5)
Next, to starting to indexIncrease skew k indexes to obtain NEW BEGINNINGTo indicate CSS positions, it can
To be provided by following formula (7)：
Wherein k be integer and
Indexed with NEW BEGINNINGStart to index in replacement formula (6)It then can determine that the CSS indexes of PRB pair
If for example, quantity of downlink PRB pairAndTo then have 12 candidates'With
The k of 4 candidates, therefore 6 bits will be needed to indicate that CSS is distributed.
With return reference to Fig. 7.After PBCH is configured with, in step 720, all NCT UE that NCT base stations are serviced to it
Broadcast the PBCH configured in step 720.
In one embodiment, the transmission mode of the PBCH in NCT networks is space frequency block coding (SFBC).
In one embodiment, in the PBCH transmission in independent NCT networks, PBCH can be sent out on an antenna port
Penetrate.
Fig. 8 shows a kind of device 800 for being used to strengthen in NCT networks PBCH according to the embodiment of the present invention
Block diagram.Device 800 can for example be realized in NCT base stations or realized by NCT base stations.
As illustrated, device 800 includes：PBCH dispensing units 810, it is configured to configure with comprising spy PBCH
Due to the DMRS of NCT base stations, the wherein DMRS is used for all NCT UE that the NCT base stations are serviced and the PBCH is demodulated,
And transmitting element 820, its all NCT UE for being configured to be serviced to the NCT base stations broadcast configured PBCH.
In one embodiment, PBCH dispensing units 810 are configured to by producing the pseudorandom specific to the PBCH
Sequence produces the new specific reference signal sequences of the PBCH, and so as to produce the DMRS associated with the PBCH, this is new
The specific reference signal sequence r (m) of PBCH are：
Wherein 0≤m≤M, M are the quantity of reference signal, c (i) be puppet defined in Section 7.2 of 3GPP TS36.213 with
Machine sequence, its initial value are
Wherein nsIt is the timeslot number in a subframe,WithIt is predetermined PBCH coordination parameters respectively.
In one embodiment, PBCH dispensing units 810 are additionally configured to produce CRS according to original scheme, and make this
CRS is only opened in the resource block that the PBCH is located at.
Fig. 9 shows another device 900 for being used to strengthen in NCT networks PBCH according to the embodiment of the present invention
Block diagram.Device 900 can for example be realized in NCT base stations or realized by NCT base stations.
As illustrated, device 900 includes：PBCH dispensing units 910, it is configured to configure PBCH to indicate
EPDCCH CSS configurations, and transmitting element 920, it is configured to all NCT UE broadcast institute serviced to the NCT base stations
The PBCH of configuration.
In one embodiment, CSS configurations include at least one in the following：EPDCCH transport-types, CSS
Position and CSS sizes.
In one embodiment, PBCH dispensing units 910 are configured to combine using cell identifier and CSS indexes
Indicate CSS positions.
In one embodiment, PBCH dispensing units 910 are configured to what is be located at according to following equation to determine CSS
The CSS indexes of PRB pair：
WhereinWithIt is the number and CSS sizes of downlink PRB pair respectively,It is downward rounding operation symbol, it is small
Area is specifically offset It is cell identifier, N is the integer depending on bandwidth, and it is by fixed in advance
Justice.
In one embodiment, PBCH dispensing units 910 are configured to what is be located at according to following equation to determine CSS
The CSS indexes of PRB pair：
WhereinIt is the number of downlink PRB pair,It is downward rounding operation symbol, cell is specifically offset It is cell identifier, N is the integer depending on bandwidth, and it is predefined.
In one embodiment, PBCH dispensing units 910 are configured to by starting to indexWith it is continuousIt is individual
PRB pair indicates CSS positions, whereinIt is CSS sizes.
In one embodiment, PBCH dispensing units 910 are configured to start to index to define by following equation
In one embodiment, PBCH dispensing units 910 are also configured to by starting to indexIncrease skew k
To obtain NEW BEGINNING indexTo indicate CSS positions, wherein k be integer and
In the disclosure, according to the linguistic context using the term, term " base station " can refer to the overlay area of base station and/or right
The base station or base station sub-system that the overlay area is serviced.In the disclosure, based on context, term " base station " can be with
" cell ", " used interchangeably such as Node B " " eNodeB ".
Here, method disclosed herein is described referring to the drawings.It should be appreciated, however, that shown in accompanying drawing and
Sequence of steps described in this description is only schematical, without departing from the scope of the claims, these sides
Method step and/or action can in a different order be performed and be not limited to shown in accompanying drawing and described in the specification
Particular order.
In one or more exemplary designs, this can be realized with hardware, software, firmware or their any combination
The described function of application.If realized with software, can be stored the function as one or more instruction or code
On a computer-readable medium, transmit or as one or more instructions on computer-readable medium or code.Calculate
Machine computer-readable recording medium includes computer-readable storage medium and communication media, and wherein communication media includes contributing to computer program from one
Place is delivered to the arbitrary medium of another place.Storage medium can be that universal or special computer is addressable any available
Medium.This computer-readable medium can include, for example, but not limited to, RAM, ROM, EEPROM, CD-ROM or other CD
Storage device, disk storage equipment or other magnetic storage apparatus, either available for universal or special computer or it is general or
The form of the addressable instruction of application specific processor or data structure come code modules desired by carrying or storing it is any its
Its medium.It is also, any to connect the computer-readable medium that be known as.If for example, software be using coaxial cable,
The wireless technology of optical fiber cable, twisted-pair feeder, Digital Subscriber Line (DSL) or such as infrared ray, radio and microwave etc is come from net
Stand, server or other remote sources transmission, then coaxial cable, optical fiber cable, twisted-pair feeder, DSL or such as infrared ray, wireless
The wireless technology of electricity and microwave etc is also included within the definition of medium.
General processor, digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate can be used
Array (FPGA) or other PLDs, discrete gate or transistor logic, discrete hardware components or for performing sheet
Any combination of function described in text come realize or perform various exemplary logical blocks with reference to described by the disclosure, module and
Circuit.General processor can be microprocessor, or, processor can also be any conventional processor, controller, micro-control
Device or state machine processed.Processor can also be embodied as the combination of computing device, for example, DSP and microprocessor combine, are multiple
The combination of microprocessor, one or more microprocessors and DSP core, or any other such structure.
Those of ordinary skill in the art are also understood that the various exemplary logics described with reference to embodiments herein
Block, module, circuit and algorithm steps can be implemented as electronic hardware, computer software or combination.In order to understand earth's surface
Show this interchangeability between hardware and software, various exemplary part, block, module, circuit and steps are enclosed above
General description has been carried out around its function.Hardware is implemented as this function and is also implemented as software, depending on specific
Using and apply design constraint over the whole system.Those skilled in the art can be directed to every kind of application-specific, to become
Logical mode realizes described function, still, this to realize that decision-making should not be interpreted as causing a departure from the scope of this disclosure.
The above description of the disclosure is used to enable any those of ordinary skill of this area to realize or using the present invention.It is right
For those of ordinary skill in the art, the various modifications of the disclosure will be apparent from, and generality defined herein
Principle can also be applied to other deformations in the case of without deviating from the spirit and scope of the disclosed invention.Therefore, the present invention simultaneously
Example as described herein and design are not limited to, but it is consistent with the widest scope of principle disclosed herein and novel features.
Claims (12)
1. a kind of method for being used to strengthen Physical Broadcast Channel PBCH in new wave-carring type NCT networks, wherein the NCT network bags
One or more NCT user equipment (UE)s that NCT base stations and the NCT base stations are serviced are included, this method is performed by NCT base stations, including：
The PBCH is configured to be used for the NCT base stations comprising the demodulated reference signal DMRS specific to the NCT base stations, the wherein DMRS
All NCT UE serviced are demodulated to the PBCH；
The PBCH is configured to indicate that enhanced Physical Downlink Control Channel ePDCCH public search space CSS is configured；And
All NCT UE serviced to the NCT base stations broadcast configured PBCH.
2. the method as described in claim 1, wherein configuring the PBCH includes：
The new reference signal sequence specific to the PBCH is produced by producing specific to the pseudo-random sequence of the PBCH, so as to
Produce the DMRS associated with the PBCH.
3. method as claimed in claim 2, the wherein new reference signal sequence r (m) specific to the PBCH are：
<mrow>
<mi>r</mi>
<mrow>
<mo>(</mo>
<mi>m</mi>
<mo>)</mo>
</mrow>
<mo>=</mo>
<mfrac>
<mn>1</mn>
<msqrt>
<mn>2</mn>
</msqrt>
</mfrac>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<mn>2</mn>
<mo>&CenterDot;</mo>
<mi>c</mi>
<mo>(</mo>
<mrow>
<mn>2</mn>
<mi>m</mi>
</mrow>
<mo>)</mo>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mi>j</mi>
<mfrac>
<mn>1</mn>
<msqrt>
<mn>2</mn>
</msqrt>
</mfrac>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<mn>2</mn>
<mo>&CenterDot;</mo>
<mi>c</mi>
<mo>(</mo>
<mrow>
<mn>2</mn>
<mi>m</mi>
<mo>+</mo>
<mn>1</mn>
</mrow>
<mo>)</mo>
<mo>)</mo>
</mrow>
<mo>,</mo>
</mrow>
Wherein 0≤m≤M, M are the quantity of reference signal, and c (i) is pseudorandom sequence defined in Section 7.2 of 3GPP TS 36.213
Row, its initial value are
Wherein nsIt is the timeslot number in a subframe,WithIt is predetermined PBCH coordination parameters respectively.
4. the method as described in claim 1, wherein configuring the PBCH includes：
Cell specific reference signal CRS is produced according to original scheme, and the CRS is only beaten in the resource block that the PBCH is located at
Open.
5. the configuration of the method as described in claim 1, the wherein CSS includes at least one in the following：EPDCCH is transmitted
Type, CSS positions and CSS sizes.
6. the method as described in claim 1, wherein configuring the PBCH to indicate that ePDCCH CSS configurations include：Utilize cell
Identifier and CSS indexes come joint instructions CSS positions.
7. method as claimed in claim 6, wherein being included using cell identifier and CSS indexes come joint instructions CSS positions
The CSS indexes of PRB pair that CSS is located at are determined according to following equation：
WhereinWithIt is the number and CSS sizes of downlink PRB pair respectively；It is downward rounding operation symbol；Cell is special
Fixed skew It is cell identifier, N is the integer depending on bandwidth, and it is by fixed in advance
Justice；*:* be jump operator, * a:n:B* represents that using a as starting point n counts for step-length, and the fortune using the number no more than b as terminal
Calculate, a, b, n are integers.
8. method as claimed in claim 6, wherein being included using cell identifier and CSS indexes come joint instructions CSS positions
The CSS indexes of PRB pair that CSS is located at are determined according to following equation：
WhereinIt is the number of downlink PRB pair；It is downward rounding operation symbol；Cell is specifically offset It is cell identifier, N is the integer depending on bandwidth, and it is predefined；*:* it is jump
Operator, * a:B* represents that using a as starting point 1 is that step-length counts, and the computing using the number no more than b as terminal, a, b are whole
Number.
9. the method as described in claim 1, wherein configuring the PBCH to indicate that ePDCCH CSS configurations include：Pass through beginning
IndexWith it is continuousIndividual PRB pair indicates CSS positions, whereinIt is CSS sizes.
10. method as claimed in claim 9, wherein starting to index to define by following equation
<mrow>
<msubsup>
<mi>n</mi>
<mi>s</mi>
<mrow>
<mi>C</mi>
<mi>S</mi>
<mi>S</mi>
</mrow>
</msubsup>
<msubsup>
<mi>modN</mi>
<mrow>
<mi>R</mi>
<mi>B</mi>
</mrow>
<mrow>
<mi>C</mi>
<mi>S</mi>
<mi>S</mi>
</mrow>
</msubsup>
<mo>=</mo>
<mn>0.</mn>
</mrow>
11. method as claimed in claim 10, wherein also by starting to indexIncrease offsets k to obtain NEW BEGINNING
IndexTo indicate CSS positions, wherein k be integer and
12. a kind of device for being used to strengthen Physical Broadcast Channel PBCH in new wave-carring type NCT networks, wherein the NCT networks
The one or more NCT user equipment (UE)s serviced including NCT base stations and the NCT base stations, the device realize in NCT base stations or
Realized by NCT base stations, including：
PBCH dispensing units, it is configured as configuring the PBCH with comprising the demodulation reference letter specific to the NCT base stations
Number DMRS, the wherein DMRS are used for all NCT UE that the NCT base stations are serviced and the PBCH are demodulated, and to the PBCH
Configured to indicate that enhanced Physical Downlink Control Channel ePDCCH public search space CSS is configured；And
Transmitting element, its all NCT UE for being configured to be serviced to the NCT base stations broadcast configured PBCH.
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| KR102318438B1 (en) * | 2017-04-26 | 2021-10-27 | 삼성전자 주식회사 | Method and apparatus for configuration of demodulation refreence siganl location in wireless cellular communication system |
| MX2019014881A (en) * | 2017-06-15 | 2020-02-13 | Sharp Kk | Method and apparatus for generating and using reference signal for broadcast channel for radio system. |
| CN109150462B (en) * | 2017-06-16 | 2020-09-01 | 电信科学技术研究院 | PBCH (physical broadcast channel) dedicated demodulation reference signal transmission method and device |
| WO2019010632A1 (en) * | 2017-07-11 | 2019-01-17 | 北京小米移动软件有限公司 | Inter-cell signal interference control method and apparatus, user equipment, and base station |
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